Polyethylene spraying equipment for processing unbonded steel strand

Abstract

The invention discloses polyethylene spraying equipment for unbonded steel strand processing, and relates to the technical field of polyethylene spraying, the polyethylene spraying equipment comprises a mounting cabinet, and a motor is fixedly mounted on the side of the outer surface of the mounting cabinet. According to the polyethylene spraying equipment for processing the unbonded steel strand, a worker conveys a polyethylene raw material into the hot melting tank through the material guide hopper and conveys the polyethylene raw material along the inclined inner wall of the material guide cavity, an air heater arranged on the outer side of the hot melting tank is in a running state, and hot air generated by the air heater is conveyed into the material guide cavity through an air supply pipe and a connecting pipe; hot air enters the material guide cavity, airflow blows and pushes the anti-blocking piece to rotate in the material guide cavity and pokes the falling polyethylene raw material, at the moment, the hot air makes contact with the polyethylene raw material in the material guide cavity and heats the polyethylene raw material, and the polyethylene coating is conveyed into the cooling spraying assembly along the guide pipe; the polyethylene raw materials are prevented from being accumulated in the material guide cavity during hot melting treatment, and the melting efficiency of the polyethylene raw materials is not affected.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of polyethylene spraying, in particular to a polyethylene spraying equipment for processing unbonded steel strand. BACKGROUND

[0002] From the engineering application requirements, whether it is the prestressed structure of large buildings, the magnificent bridge across the river, or the towering wind power tower, unbonded steel strand bears an important load-bearing task. In complex use environment, steel strand is easy to be eroded by external factors, such as corrosion caused by humid air, corrosion caused by chemical substances, etc., which can seriously weaken the strength of steel strand and reduce its service life, and bring safety hazards to engineering. Unbonded steel strand needs to form a uniform, firm and specific performance polyethylene coating on the outside of the steel strand to achieve effective protection and function improvement of the steel strand. The polyethylene coating is like a layer of strong armor for the steel strand, which can effectively block the erosion of moisture, oxygen and various corrosive media due to its good chemical stability, greatly enhancing the corrosion resistance of the steel strand. At the same time, the low friction coefficient of polyethylene makes the steel strand more smooth in the process of tensioning, reduces friction loss, improves tensioning efficiency and ensures the smooth progress of engineering construction.

[0003] In the production and manufacturing link, the traditional processing method of unbonded steel strand has many drawbacks. The early process of manual asphalt coating and plastic cloth winding is not only complicated and inefficient, but also the coating quality is difficult to guarantee, which cannot meet the large-scale and high-quality engineering requirements. With the development of technology, extrusion coating process gradually rises, although it improves the mechanization to a certain extent, but there are still some problems in the accurate control of polyethylene coating, such as uneven coating thickness and poor combination with steel strand, which affects the stability of product quality. SUMMARY

[0004] In order to achieve the above purpose, the present application is realized by the following technical scheme: a polyethylene spraying equipment for processing unbonded steel strand, comprising: a mounting cabinet, a motor is fixedly installed on the edge side of the outer surface of the mounting cabinet, a drive seat is rotatably installed on the output end of the motor through a belt pulley, a protective frame is provided and installed on the outer surface of the drive seat and the motor, and a collecting groove is provided and installed on the outer surface of the mounting cabinet away from the drive seat; A cooling spraying assembly is used for conveying and spraying the hot-melt polyethylene coating, which is fixedly installed on the outer surface of the drive seat, and a spiral pushing rod is rotatably installed in the cooling spraying assembly, which is rotatably adapted to the output end of the motor through a belt pulley; The hot melt assembly is used for preventing blockage during conveying after hot melting of the polyethylene raw material, a material guide hopper is fixedly installed at the middle of the top of the hot melt assembly, and the hot melt assembly is fixedly installed at the top of the cooling and spraying assembly. The conveying assembly is used for guiding and conveying the steel strand, and is installed at the outer side of the cooling and spraying assembly and is matched with the cooling and spraying assembly. Before the steel strand is processed, the staff erects the steel strand wound on the unwinding device on the conveying assembly, and passes the steel strand through the cooling and spraying assembly, and then the staff conveys the polyethylene raw material into the hot melt assembly through the material guide hopper, heats the polyethylene raw material through the hot melt assembly, sprays the polyethylene raw material on the surface of the steel strand through the cooperation of the hot melt assembly and the cooling and spraying assembly, and pulls the steel strand through the other side of the winding device to pull out the sprayed and processed steel strand from the cooling and spraying assembly, and sprays and processes the unwound steel strand as the steel strand is pulled and displaced in the cooling and spraying assembly.

[0005] Preferably, the hot melt assembly comprises a hot melt tank, a material guide cavity is fixedly installed at the bottom of the hot melt tank, a connecting pipe is fixedly installed at one side of the outer surface of the material guide cavity, a air supply pipe is fixedly installed in the connecting pipe, a hot air blower is fixedly installed at the top of the air supply pipe, a control cabinet is fixedly installed at the outer surface of the air supply pipe, an anti-blocking piece is fixedly installed at the bottom of the material guide cavity, a guide pipe is fixedly installed at the bottom of the anti-blocking piece, and a cleaning pipe is fixedly installed at one side of the outer surface of the guide pipe. The staff conveys the polyethylene raw material into the hot melt tank through the material guide hopper and along the inclined inner wall of the material guide cavity, the hot air blower arranged at the outer side of the hot melt tank is in an operating state, the hot air generated by the hot air blower is conveyed into the material guide cavity through the air supply pipe and the connecting pipe, the airflow in the material guide cavity blows and pushes the anti-blocking piece to rotate in the material guide cavity and stirs the falling polyethylene raw material, at this time, the hot air contacts and heats the polyethylene raw material in the material guide cavity, and the polyethylene coating is conveyed into the cooling and spraying assembly along the guide pipe, so as to avoid the polyethylene raw material from being accumulated in the material guide cavity during the hot melting process, and to affect the melting efficiency of the polyethylene raw material.

[0006] Preferably, the hot melt tank is fixedly installed at the bottom of the material guide hopper, the guide pipe is fixedly installed at the top of the cooling and spraying assembly, and the material guide cavity is in communication with the air supply pipe through the connecting pipe.

[0007] Preferably, the anti-clogging component includes a positioning circular plate. The top of the positioning circular plate has three rotating grooves arranged circumferentially on the surface of the positioning circular plate. Limiting rings are fixedly installed on the outer surface of each rotating groove. A rotating ball is rotatably installed inside each rotating groove. A positioning shaft is fixedly installed on the outer surface of each rotating ball. A perforated plate is fixedly installed on the outer surface of each positioning shaft. Three perforated plates are provided. A fixing block is fixedly installed inside each of the three perforated plates. A curved tube is fixedly installed between the opposite faces of each fixing block. A sphere is fixedly installed on the outer surface of each curved tube. Hot air enters the material guiding chamber through the connecting pipe. The hot air blows and pushes the rotating ball to rotate within the rotating groove. The rotating ball causes the positioning shaft to move within the material guiding chamber. The movement of the positioning shaft causes the perforated plate, curved tube, and sphere to move the polyethylene raw material, improving the flowability of the polyethylene raw material within the material guiding chamber and preventing the polyethylene raw material from accumulating in the material guiding chamber and affecting the uniformity of heating the polyethylene raw material.

[0008] Preferably, the positioning circular plate is fixedly installed between the adjacent surfaces of the material guiding cavity and the guide tube, and the rotating ball is rotatably installed inside the material guiding cavity through the rotating groove.

[0009] Preferably, the cooling spraying assembly includes a pusher, a feeding pipe fixedly installed at the center of the outer surface of the pusher, a layered guide cavity fixedly installed on the outer surface of the feeding pipe, five layered guide cavities are provided, a connecting plate is fixedly installed between the adjacent surfaces of the five layered guide cavities, a cooling fan is fixedly installed on one side of the outer surface of each layered guide cavity, ventilation holes are provided on both sides of the top of each layered guide cavity, an inner tube is fixedly installed inside the layered guide cavity, and a spraying component is fixedly installed on the surface of the layered guide cavity away from the pusher. After being heated, the polyethylene raw material is conveyed through the conduit into the feeding pipe. At this time, the spiral feeding rod installed inside the pusher rotates in the inner tube along with the pulley. The spiral feeding rod conveys the molten raw material to the side of the coating part. During the material conveying, the cooling fan installed on the outside of the layered guide cavity blows air into the layered guide cavity to cool the raw material in the inner tube, so as to avoid equipment failure and blockage due to excessive temperature. At the same time, the cooling treatment can accelerate the formation of the polyethylene coating on the outer layer of the steel strand, shorten the waiting time for coating of the steel strand, reduce the backlog between processes, and improve the overall production efficiency.

[0010] Preferably, the pusher is fixedly installed inside the drive seat, and the pusher passes through the drive seat and is rotatably adapted to the output end of the motor via a pulley. The spiral pusher rod installed inside the pusher passes through the feeding pipe and extends into the cavity of the inner tube. The cooling fan is connected to the layered guide cavity.

[0011] Preferably, the spraying member comprises a nozzle fixedly installed on the outer surface of the inner layer pipe, an extension pipe fixedly installed on the outer surface of the nozzle, a sleeve pipe sleeved on the outer surface of the extension pipe, outer layer covers movably installed on the two sides of the outer surface of the sleeve pipe, and a perforation and a spraying cavity opened in the inner portion of the sleeve pipe and corresponding to the extension pipe. The steel strand extends through the perforation to the other side of the sleeve pipe, the polyethylene coating is sprayed into the spraying cavity through the nozzle and gathered in the spraying cavity to coat the surface of the steel strand. As the steel strand moves in the perforation and the spraying cavity under the pulling of the unwinding device, the inner wall of the perforation scrapes off the polyethylene coating on the steel strand that is too thick to make the raw material wrapped on the surface of the steel strand more uniform. The polyethylene coating overflowing from the outer side of the perforation falls and is collected in the collecting groove to avoid the waste of raw material.

[0012] Preferably, the conveying assembly comprises a support frame, support plates fixedly installed on the two sides of the inner portion of the support frame, limit frame plates fixedly installed on the top of the support plates, two groups of limit frame plates, positioning rods and guide rods respectively installed in the inner portions of the two groups of limit frame plates, the positioning rods extending through the support frame to the outer side thereof, positioning plates fixedly installed on the two sides of the outer surface of the positioning rods, and the positioning plates fixedly installed on the outer surface of the support frame. The steel strand is usually stored by the unwinding device before processing. When the steel strand is sprayed, the unwinding and winding devices on the two sides are matched with the cooling and spraying assembly to guide and convey the steel strand. The steel strand is arranged on the surface of the guide rod. In the process of pulling and conveying the steel strand, the guide rod rotates under the driving of the steel strand to accelerate the speed of the steel strand during pulling. Since the steel strand has a certain weight, the guide rod supports the steel strand to lift and constrain the sag of the steel strand, prevents the steel strand from directly rubbing against the ground to generate iron filings, and avoids the mixing of the iron filings into the polyethylene coating to affect the product quality.

[0013] Preferably, the guide rod is rotationally installed in the inner portion of the limit frame plate, fixed shafts rotationally installed on the two sides of the outer surface of the guide rod, springs fixedly installed on the outer surface of the fixed shafts, connecting rods fixedly installed on the outer surface of the springs, and the connecting rods fixedly installed on the outer surface of the support frame.

[0014] The present application provides a polyethylene spraying device for processing of unbonded steel strand. The device has the following advantages: One, the polyethylene spraying equipment for the unbonded steel strand processing, the polyethylene raw material is conveyed into the hot melting tank through the guide hopper by the staff, and is conveyed along the inclined inner wall of the guide cavity, the hot air machine outside the hot melting tank is in operation, the hot air generated by the hot air machine is conveyed into the guide cavity through the air supply pipe and the connecting pipe, the hot air entering the guide cavity blows the anti-blocking piece to rotate in the guide cavity and stirs the falling polyethylene raw material, at this time the hot air contacts the polyethylene raw material in the guide cavity and heats the polyethylene raw material, the polyethylene coating is conveyed into the cooling and spraying assembly along the guide pipe to avoid the polyethylene raw material from accumulating in the guide cavity during hot melting treatment, affecting the melting efficiency of the polyethylene raw material.

[0015] Two, the polyethylene spraying equipment for the unbonded steel strand processing, the hot air enters the guide cavity along the connecting pipe, the hot air blows the rotating ball to rotate in the rotating groove, at this time the rotating ball drives the positioning shaft to move in the guide cavity, the positioning shaft drives the hollow stirring plate, the curved pipe and the ball to stir the polyethylene raw material, improving the flowability of the polyethylene raw material in the guide cavity, preventing the polyethylene raw material from accumulating in the guide cavity and affecting the uniformity of the polyethylene raw material heating.

[0016] Three, the polyethylene spraying equipment for the unbonded steel strand processing, the melted polyethylene raw material is conveyed into the feeding pipe along the guide pipe, at this time the screw feeding rod installed in the pushing piece rotates in the inner layer pipe with the belt pulley, the melted raw material is conveyed to one side of the spraying piece through the screw feeding rod, the cooling fan installed outside the layered guide cavity blows air into the layered guide cavity to cool the raw material in the inner layer pipe, avoiding equipment failure and blockage due to high temperature, and the cooling treatment can accelerate the forming speed of the polyethylene coating wrapped on the outer layer of the steel strand, shorten the waiting time of the steel strand for coating, reduce the backlog between processes, and improve the overall production efficiency. Four, the polyethylene spraying equipment for the unbonded steel strand processing, the steel strand extends to the other side of the sleeve through the perforation, the polyethylene coating is sprayed into the spraying cavity through the nozzle, and is gathered in the spraying cavity, so that the polyethylene coating is wrapped on the surface of the steel strand, the steel strand moves in the perforation and the spraying cavity by the unwinding equipment, when the steel strand passes out of the perforation, the inner wall of the perforation scrapes off the polyethylene coating that is too thick on the steel strand, so that the raw material wrapped on the surface of the steel strand is more uniform, and the polyethylene coating overflowing outside the perforation falls and is collected in the collection groove, to avoid the phenomenon of raw material waste.

[0017] Five, the polyethylene spraying equipment for the non-bonded steel strand processing, through the steel strand before processing is usually stored through the unwinding equipment, when the steel strand is sprayed and processed, the lowering spraying assembly is matched with the two sides of the winding and unwinding equipment to guide the conveying of the steel strand, the steel strand is erected on the surface of the guide rod, in the process of pulling and conveying the steel strand, the guide rod is rotated by the steel strand to speed up the speed of the steel strand pulling, because the steel strand itself has a certain weight, the guide rod supports the steel strand, can lift and constrain the drooping of the steel strand, can prevent the steel strand from directly rubbing with the ground to produce iron filings, avoids the mixing of the iron filings into the polyethylene coating to affect the product quality. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is external structure schematic diagram of polyethylene spraying equipment for non-bonded steel strand processing of the application; Figure 2 It is another angle external structure schematic diagram of polyethylene spraying equipment for non-bonded steel strand processing of the application; Figure 3 It is connecting structure schematic diagram of lowering spraying assembly and hot melting assembly of the application; Figure 4 It is structure schematic diagram of spraying of the application; Figure 5 It is cross section structure schematic diagram of layered guide cavity of the application; Figure 6 It is cross section structure schematic diagram of disassembled spraying of the application; Figure 7 It is structure schematic diagram of conveying assembly of the application; Figure 8 It is disassembled structure schematic diagram of conveying assembly of the application; Figure 9 It is structure schematic diagram of hot melting assembly of the application; Figure 10 It is connecting structure schematic diagram of guide pipe and feeding pipe of the application; Figure 11 It is cross section internal structure schematic diagram of guide material cavity of the application; Figure 12 It is connecting structure schematic diagram of anti-blocking piece and guide pipe of the application; Figure 13 It is structure schematic diagram of anti-blocking piece of the application; Figure 14 It is split structure schematic diagram of anti-blocking piece of the application.

[0019] In the diagram: 1. Motor; 2. Protective frame; 3. Drive base; 4. Hot melt assembly; 41. Hot melt tank; 42. Hot air blower; 43. Material guide chamber; 44. Control cabinet; 45. Air supply duct; 46. Connecting pipe; 47. Conduit; 48. Cleaning pipe; 49. Anti-blocking component; 491. Positioning circular plate; 492. Rotary groove; 493. Limiting ring; 494. Rotating ball; 495. Positioning shaft; 496. Hollowed-out baffle plate; 497. Fixing block; 498. Curved tube; 499. Sphere; 5. Material guide hopper; 6. Cooling spraying assembly; 1. Layered guide cavity; 62. Cooling fan; 63. Feeding pipe; 64. Spraying part; 641. Nozzle; 642. Outer cover; 643. Perforation; 644. Spraying cavity; 645. Extension pipe; 65. Pushing part; 66. Connecting plate; 67. Ventilation hole; 68. Inner tube; 7. Conveying assembly; 71. Support frame; 72. Support plate; 73. Limiting frame plate; 74. Connecting rod; 75. Positioning rod; 76. Guide rod; 77. Fixed shaft; 78. Positioning plate; 79. Spring; 8. Collection trough; 9. Mounting cabinet. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] First embodiment, such as Figures 1 to 14 As shown, the present invention provides a technical solution: a polyethylene spraying device for processing unbonded steel strands, comprising: Installation cabinet 9, a motor 1 is fixedly installed on the side of the outer surface of the installation cabinet 9, a drive seat 3 is installed on the output end of the motor 1 via a pulley, a protective frame 2 is installed on the outer surface of the drive seat 3 and the motor 1, and a collection trough 8 is installed on the outer surface of the installation cabinet 9 away from the drive seat 3. Cooling spraying assembly 6 is used for conveying and spraying polyethylene coating after hot melting. The cooling spraying assembly 6 is fixedly installed on the outer surface of the drive base 3. A spiral pusher is rotatably installed inside the cooling spraying assembly 6. The spiral pusher is rotatably adapted to the output end of the motor 1 through a pulley. The cooling spraying assembly 6 comprises a pushing piece 65, the outer surface of the pushing piece 65 is fixedly installed with a feeding pipe 63, the outer surface of the feeding pipe 63 is fixedly installed with layered guide cavities 61, the layered guide cavities 61 are provided with five, the adjacent surfaces of the five layered guide cavities 61 are all fixedly installed with connecting plates 66, one side of the outer surface of the layered guide cavities 61 is all fixedly installed with cooling fans 62, both sides of the top of the layered guide cavities 61 are all provided with ventilation holes 67, the inside of the layered guide cavities 61 is fixedly installed with inner layer pipes 68, and the surface of the side, away from the pushing piece 65, of the layered guide cavities 61 is fixedly installed with spraying pieces 64. The hot-melted polyethylene raw material is conveyed into the feeding pipe 63 along the conduit 47, at this time, the spiral feeding rod installed in the pushing piece 65 rotates in the inner layer pipe 68 along with the rotation of the belt pulley, the raw material after melting is conveyed to the side of the spraying piece 64 through the spiral feeding rod, the cooling fan 62 installed outside the layered guide cavities 61 blows air into the layered guide cavities 61 to cool the raw material in the inner layer pipe 68 when the raw material is conveyed, so as to avoid equipment failure and blockage caused by too high temperature, meanwhile, the cooling treatment can accelerate the forming speed of the polyethylene coating layer coated on the outer layer of the steel strand, shorten the waiting time of the steel strand for coating, reduce the backlog between processes, and improve the overall production efficiency.

[0022] The pushing piece 65 is fixedly installed in the inside of the driving seat 3, and the pushing piece 65 penetrates through the driving seat 3 and is rotationally adapted with the output end of the motor 1 through the belt pulley, the spiral pushing rod installed in the inside of the pushing piece 65 extends to the cavity inside of the inner layer pipe 68 through the feeding pipe 63, and the cooling fan 62 is in communication with the layered guide cavities 61.

[0023] The hot-melt assembly 4 is used for preventing blockage of the polyethylene raw material after hot melting and conveying, the hot-melt assembly 4 is fixedly installed at the top of the cooling spraying assembly 6. The hot melt assembly 4 comprises a hot melt tank 41, the bottom of the hot melt tank 41 is fixedly installed with a material guiding cavity 43, one side of the outer surface of the material guiding cavity 43 is fixedly installed with a connecting pipe 46, the inside of the connecting pipe 46 is fixedly installed with a air supply pipe 45, the top of the air supply pipe 45 is fixedly installed with a hot air blower 42, the outer surface of the air supply pipe 45 is fixedly installed with a control cabinet 44, the bottom of the material guiding cavity 43 is fixedly installed with an anti-blocking piece 49, the bottom of the anti-blocking piece 49 is fixedly installed with a guide pipe 47, one side of the outer surface of the guide pipe 47 is fixedly installed with a cleaning pipe 48. The staff sends the polyethylene raw material into the hot melt tank 41 through the material guiding hopper 5, and the polyethylene raw material is conveyed along the inclined inner wall of the material guiding cavity 43, the hot air blower 42 arranged outside the hot melt tank 41 is in an operating state, the hot air generated by the hot air blower 42 is sent into the material guiding cavity 43 through the air supply pipe 45 and the connecting pipe 46, the hot air enters the material guiding cavity 43, the air flow blows and pushes the anti-blocking piece 49 to rotate in the material guiding cavity 43 and stirs the falling polyethylene raw material, at this time, the hot air contacts the polyethylene raw material in the material guiding cavity 43 and heats the polyethylene raw material, the polyethylene coating is conveyed into the cooling spraying assembly 6 along the guide pipe 47, so as to avoid that the polyethylene raw material is accumulated in the material guiding cavity 43 during the hot melt treatment, and the melting efficiency of the polyethylene raw material is affected.

[0024] The hot melt tank 41 is fixedly installed at the bottom of the material guiding hopper 5, the guide pipe 47 is fixedly installed at the top of the cooling spraying assembly 6, and the material guiding cavity 43 is in communication with the air supply pipe 45 through the connecting pipe 46.

[0025] The conveying assembly 7 is used for guiding and conveying the steel strand, the conveying assembly 7 is arranged outside the cooling spraying assembly 6 and is matched with the cooling spraying assembly 6. Before the steel strand is processed, the staff erects the steel strand wound on the unwinding device on the conveying assembly 7, and passes the steel strand through the cooling spraying assembly 6, then the staff sends the polyethylene raw material into the hot melt assembly 4 through the material guiding hopper 5, heats the polyethylene raw material through the hot melt assembly 4, sprays the polyethylene raw material on the surface of the steel strand through the cooperation of the hot melt assembly 4 and the cooling spraying assembly 6, and pulls the steel strand through the other side of the winding device to pull out the sprayed and processed steel strand from the cooling spraying assembly 6, and sprays and processes the unwound steel strand along with the displacement of the steel strand in the cooling spraying assembly 6.

[0026] The conveying assembly 7 comprises a support frame 71, both sides of the inside of the support frame 71 are fixedly provided with support plates 72, the top of each of the support plates 72 is fixedly provided with a limiting frame plate 73, the limiting frame plate 73 is provided with two groups, the inside of the two groups of limiting frame plates 73 is respectively provided with a positioning rod 75 and a guide rod 76, the positioning rod 75 extends through the support frame 71 to the outside thereof, both sides of the outer surface of the positioning rod 75 are fixedly provided with positioning plates 78, and the positioning plates 78 are fixedly installed on the outer surface of the support frame 71. The steel strand is usually stored by the unwinding device before processing. When the steel strand is sprayed and processed, the unwinding and winding device on both sides cooperates with the cooling and spraying assembly 6 to guide and convey the steel strand. The steel strand is arranged on the surface of the guide rod 76. In the process of pulling and conveying the steel strand, the guide rod 76 is rotated by the steel strand to speed up the speed of the steel strand during pulling. Since the steel strand has a certain weight, the guide rod 76 supports the steel strand, can lift and constrain the sag of the steel strand, can prevent the steel strand from directly rubbing with the ground to generate iron filings, and can avoid that the iron filings are mixed into the polyethylene coating to affect the product quality.

[0027] The guide rod 76 is rotatably installed in the inside of the limiting frame plate 73, both sides of the outer surface of the guide rod 76 are rotatably provided with fixed shafts 77, the outer surface of the fixed shaft 77 is fixedly provided with springs 79, the outer surface of the spring 79 is fixedly provided with a connecting rod 74, and the connecting rod 74 is fixedly installed on the outer surface of the support frame 71.

[0028] The second embodiment is based on the first embodiment, please refer to Figures 7 to 8 As shown in the figure, the spraying part 64 comprises a nozzle 641, the nozzle 641 is fixedly installed on the outer surface of the inner layer pipe 68, the outer surface of the nozzle 641 is fixedly provided with an extension pipe 645, the outer surface of the extension pipe 645 is sleeved with a sleeve pipe 646, both sides of the outer surface of the sleeve pipe 646 are movably provided with an outer layer cover 642, the inside of the sleeve pipe 646 is provided with a perforation 643 and a spraying cavity 644, the perforation 643 extends through the sleeve pipe 646 to the outside thereof, and the spraying cavity 644 is correspondingly provided with the extension pipe 645. The steel strand extends to the other side of the sleeve pipe 646 through the perforation 643, the polyethylene coating is sprayed into the spraying cavity 644 through the nozzle 641, and is gathered in the spraying cavity 644, so that the polyethylene coating is wrapped on the surface of the steel strand. With the unwinding device pulling the steel strand to move in the perforation 643 and the spraying cavity 644, the polyethylene coating on the steel strand in the inner wall of the perforation 643 is scraped off when the steel strand passes out of the perforation 643, so that the raw material wrapped on the surface of the steel strand is more uniform, and the polyethylene coating overflowing from the outside of the perforation 643 falls and is collected in the collecting groove 8, so as to avoid the phenomenon of raw material waste.

[0029] The third embodiment is based on the first and second embodiments, please refer toFigures 10 to 14 As shown, the anti-blocking piece 49 comprises a positioning circular plate 491, the top of the positioning circular plate 491 is provided with rotating grooves 492, the three rotating grooves 492 are distributed in a circumferential shape on the surface of the positioning circular plate 491, the outer surfaces of the rotating grooves 492 are fixedly installed with limiting rings 493, the interiors of the rotating grooves 492 are rotatably installed with rotating balls 494, the outer surfaces of the rotating balls 494 are fixedly installed with positioning shafts 495, the outer surfaces of the positioning shafts 495 are fixedly installed with hollow push plates 496, the three hollow push plates 496 are fixedly installed with fixed blocks 497 in the interiors, the opposite surfaces of the fixed blocks 497 are fixedly installed with curved tubes 498, and the outer surfaces of the curved tubes 498 are fixedly installed with spherical balls 499. The hot air enters into the material guiding cavity 43 along the connecting pipe 46, and the hot air blows and pushes the rotating ball 494 to rotate in the rotating groove 492, at this time, the rotating rotating ball 494 drives the positioning shaft 495 to move and displace in the material guiding cavity 43, and the positioning shaft 495 drives the hollow push plate 496, the curved tube 498 and the spherical ball 499 to push the polyethylene raw material, so as to improve the fluidity of the polyethylene raw material in the material guiding cavity 43 and prevent the polyethylene raw material from being accumulated in the material guiding cavity 43 to affect the uniformity of the polyethylene raw material heating.

[0030] The positioning circular plate 491 is fixedly installed between the adjacent surfaces of the material guiding cavity 43 and the guide pipe 47, and the rotating ball 494 is rotatably installed in the interior of the material guiding cavity 43 through the rotating groove 492.

[0031] In use, before the steel strand is processed, the staff erects the steel strand wound on the unwinding equipment on the conveying assembly 7 and passes the steel strand from the cooling and spraying assembly 6, and then the staff conveys the polyethylene raw material into the hot melting assembly 4 through the material guiding hopper 5, heats the polyethylene raw material through the hot melting assembly 4, sprays the polyethylene raw material on the surface of the steel strand through the cooperation of the hot melting assembly 4 and the cooling and spraying assembly 6, and pulls the steel strand through the winding equipment on the other side to pull out the sprayed and processed steel strand from the cooling and spraying assembly 6, and sprays and processes the unwound steel strand as the steel strand is pulled and displaced in the cooling and spraying assembly 6.

[0032] The staff will be transported to the hot melt tank 41 through the guide hopper 5, and along the inclined inner wall of the guide cavity 43, the hot air machine 42 outside the hot melt tank 41 is in operation, the hot air generated by the hot air machine 42 is sent to the guide cavity 43 through the air supply pipe 45 and the connecting pipe 46, the hot air enters the guide cavity 43, the airflow blows and pushes the anti-blocking piece 49 to rotate in the guide cavity 43 and stirs the falling polyethylene raw materials, at this time the hot air contacts the polyethylene raw materials in the guide cavity 43 and heats the polyethylene raw materials, the polyethylene coating is transported to the cooling spraying assembly 6 along the guide pipe 47 to avoid the polyethylene raw materials from accumulating in the guide cavity 43 during the hot melt treatment, affecting the melting efficiency of the polyethylene raw materials.

[0033] The hot air enters the guide cavity 43 through the connecting pipe 46, and the hot air blows and pushes the rotating ball 494 to rotate in the rotating groove 492, at this time the rotating ball 494 drives the positioning shaft 495 to move in the guide cavity 43, the positioning shaft 495 drives the hollow stirring plate 496, the curved pipe 498 and the ball 499 to stir the polyethylene raw materials, improving the flowability of the polyethylene raw materials in the guide cavity 43, preventing the polyethylene raw materials from accumulating in the guide cavity 43 and affecting the uniformity of the polyethylene raw materials.

[0034] The hot-melted polyethylene raw materials are transported to the feeding pipe 63 along the guide pipe 47, at this time the spiral feeding rod installed in the pushing piece 65 rotates in the inner tube 68 with the belt pulley, the melted raw materials are transported to one side of the spraying piece 64 through the spiral feeding rod, and the cooling fan 62 installed outside the layered guide cavity 61 blows air into the layered guide cavity 61 to cool the raw materials in the inner tube 68, avoiding equipment failure and blockage due to high temperature, and the cooling treatment can accelerate the forming speed of the polyethylene coating wrapped around the outer layer of the steel strand, shorten the waiting time of the steel strand for coating, reduce the backlog between processes, and improve the overall production efficiency.

[0035] The steel strand extends through the perforation 643 to the other side of the sleeve 646, the polyethylene coating is sprayed into the spraying cavity 644 through the nozzle 641, and is gathered in the spraying cavity 644, so that the polyethylene coating is wrapped around the surface of the steel strand, and the steel strand moves in the perforation 643 and the spraying cavity 644 under the pulling of the unwinding device, when the steel strand passes out of the perforation 643, the over-thick polyethylene coating on the steel strand in the inner wall of the perforation 643 is scraped off, so that the raw materials wrapped around the surface of the steel strand are more uniform, and the polyethylene coating overflowing outside the perforation 643 falls and is collected in the collecting groove 8, to avoid the phenomenon of raw material waste.

[0036] The steel strand is usually stored by unwinding equipment before processing. When the steel strand is sprayed, the unwinding and winding equipment on both sides cooperates with the cooling and spraying assembly 6 to guide and convey the steel strand. The steel strand is arranged on the surface of the guide rod 76. During the process of pulling and conveying the steel strand, the guide rod 76 is rotated by the steel strand to speed up the speed of the steel strand during pulling. Since the steel strand has a certain weight, the guide rod 76 supports the steel strand, can lift and constrain the sag of the steel strand, can prevent the steel strand from directly rubbing with the ground to generate iron filings, and can avoid mixing the iron filings into the polyethylene coating to affect the product quality.

[0037] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0038] While embodiments of the application have been shown and described, it is to be understood that the application is not limited to the details of the embodiments described, since numerous further modifications and changes can be apparent to one skilled in the art without departing from the spirit and scope of the application. The scope of the application is defined by the appended claims and their equivalents.

Claims

1. A polyethylene spraying device for processing unbonded steel strands, comprising a mounting cabinet (9), characterized in that: A motor (1) is fixedly installed on the side of the outer surface of the mounting cabinet (9). The output end of the motor (1) is mounted with a drive seat (3) via a pulley. A protective frame (2) is installed on the outer surface of the drive seat (3) and the motor (1). A collection trough (8) is installed on the outer surface of the mounting cabinet (9) away from the drive seat (3). Cooling spraying assembly (6) is used for conveying and spraying polyethylene coating after hot melting. The cooling spraying assembly (6) is fixedly installed on the outer surface of the drive seat (3). A spiral pusher is rotatably installed inside the cooling spraying assembly (6). The spiral pusher is adapted to rotate with the output end of the motor (1) through a pulley. Hot melt assembly (4), which is used for anti-blocking conveying of polyethylene raw material after hot melting, a guide hopper (5) is fixedly installed at the middle of the top of the hot melt assembly (4), and the hot melt assembly (4) is fixedly installed on the top of the cooling spraying assembly (6); A conveying assembly (7) is used for guiding and conveying steel strands. The conveying assembly (7) is installed on the outside of the cooling spraying assembly (6) and is adapted to the cooling spraying assembly (6).

2. The polyethylene spraying equipment for processing unbonded steel strands according to claim 1, characterized in that: The hot melt assembly (4) includes a hot melt tank (41), a guide cavity (43) is fixedly installed at the bottom of the hot melt tank (41), a connecting pipe (46) is fixedly installed on one side of the outer surface of the guide cavity (43), an air supply pipe (45) is fixedly installed inside the connecting pipe (46), a hot air blower (42) is fixedly installed at the top of the air supply pipe (45), a control cabinet (44) is fixedly installed on the outer surface of the air supply pipe (45), an anti-blocking component (49) is fixedly installed at the bottom of the guide cavity (43), a conduit (47) is fixedly installed at the bottom of the anti-blocking component (49), and a cleaning pipe (48) is fixedly installed on one side of the outer surface of the conduit (47).

3. The polyethylene spraying equipment for processing unbonded steel strands according to claim 2, characterized in that: The hot melt tank (41) is fixedly installed at the bottom of the guide hopper (5), the guide tube (47) is fixedly installed at the top of the cooling spraying assembly (6), and the guide cavity (43) is connected to the air supply pipe (45) through the connecting pipe (46).

4. The polyethylene spraying equipment for processing unbonded steel strands according to claim 3, characterized in that: The anti-blocking component (49) includes a positioning circular plate (491). The top of the positioning circular plate (491) is provided with a rotating groove (492). There are three rotating grooves (492), which are distributed in a circular shape on the surface of the positioning circular plate (491). Limiting rings (493) are fixedly installed on the outer surface of each rotating groove (492). Rotating balls (494) are rotatably installed inside each rotating groove (492). A positioning shaft (495) is fixedly installed on the outer surface of each rotating ball (494). A hollowed-out dial plate (496) is fixedly installed on the outer surface of each positioning shaft (495). There are three hollowed-out dial plates (496). A fixing block (497) is fixedly installed inside each of the three hollowed-out dial plates (496). A curved tube (498) is fixedly installed between the opposite faces of each fixing block (497). A ball (499) is fixedly installed on the outer surface of each curved tube (498).

5. The polyethylene spraying equipment for processing unbonded steel strands according to claim 4, characterized in that: The positioning circular plate (491) is fixedly installed between the adjacent surfaces of the material guiding cavity (43) and the guide tube (47), and the rotating ball (494) is rotatably installed inside the material guiding cavity (43) through the rotating groove (492).

6. The polyethylene spraying equipment for processing unbonded steel strands according to claim 1, characterized in that: The cooling spraying assembly (6) includes a pusher (65), a feeding pipe (63) is fixedly installed at the center of the outer surface of the pusher (65), a layered guide cavity (61) is fixedly installed on the outer surface of the feeding pipe (63), five layered guide cavities (61) are provided, a connecting plate (66) is fixedly installed between the adjacent surfaces of the five layered guide cavities (61), a cooling fan (62) is fixedly installed on one side of the outer surface of the layered guide cavity (61), ventilation holes (67) are opened on both sides of the top of the layered guide cavity (61), an inner tube (68) is fixedly installed inside the layered guide cavity (61), and a spraying component (64) is fixedly installed on the surface of the layered guide cavity (61) away from the pusher (65).

7. The polyethylene spraying equipment for processing unbonded steel strands according to claim 6, characterized in that: The pusher (65) is fixedly installed inside the drive seat (3), and the pusher (65) passes through the drive seat (3) and is adapted to rotate with the output end of the motor (1) through the pulley. The spiral pusher rod installed inside the pusher (65) passes through the feeding pipe (63) and extends into the cavity of the inner tube (68). The cooling fan (62) is connected to the layered guide cavity (61).

8. A polyethylene spraying device for processing unbonded steel strands according to claim 7, characterized in that: The spraying component (64) includes a nozzle (641), which is fixedly installed on the outer surface of the inner tube (68). An extension tube (645) is fixedly installed on the outer surface of the nozzle (641). A sleeve (646) is fitted on the outer surface of the extension tube (645). An outer cover (642) is movably installed on both sides of the outer surface of the sleeve (646). A perforation (643) and a spraying cavity (644) are opened inside the sleeve (646). The perforation (643) extends through the sleeve (646) to its outer side. The spraying cavity (644) and the extension tube (645) are correspondingly arranged.

9. A polyethylene spraying device for processing unbonded steel strands according to claim 1, characterized in that: The conveying assembly (7) includes a support frame (71). Support plates (72) are fixedly installed on both sides inside the support frame (71). Limiting plates (73) are fixedly installed on the top of each support plate (72). There are two sets of limiting plates (73). Positioning rods (75) and guide rods (76) are respectively installed inside the two sets of limiting plates (73). The positioning rods (75) extend through the support frame (71) to its outer side. Positioning plates (78) are fixedly installed on both sides of the outer surface of the positioning rods (75). The positioning plates (78) are fixedly installed on the outer surface of the support frame (71).

10. A polyethylene spraying device for processing unbonded steel strands according to claim 9, characterized in that: The guide rod (76) is rotatably installed inside the limiting frame plate (73). Fixed shafts (77) are rotatably installed on both sides of the outer surface of the guide rod (76). Springs (79) are fixedly installed on the outer surface of the fixed shafts (77). Connecting rods (74) are fixedly installed on the outer surface of the springs (79). Connecting rods (74) are fixedly installed on the outer surface of the support frame (71).

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