Multifunctional polyurethane continuous casting polyethylene insulation pipe production line

Abstract

The present invention provides a multifunctional polyurethane continuous pouring polyethylene insulation pipe production line, comprising a rust removal part, a spraying conveyor line, a pouring conveyor line, a winding conveyor line, a spraying part, a material injection part, a winding part and a finished pipe placement part, wherein the output end of the rust removal part is connected to the input end of the spraying part, the spraying conveyor line, the pouring conveyor line and the winding conveyor line are arranged adjacent to each other in sequence, the output end of the winding conveyor line is connected to the input end of the finished pipe placement part, the two sides of the pouring conveyor line are respectively provided with a spraying part, a material injection part and a finished pipe platform 1, and one side of the winding conveyor line is provided with a winding part. The insulation pipe production line adopted by the present invention can realize the production of polyurethane spray winding insulation pipes, and can also carry out the production of polyurethane spray pouring insulation pipes, and can also meet the processing of insulation pipes with different pipe diameters in the two production processes.

Description

Technical Field

[0001] The invention relates to the field of production and processing of polyethylene thermal insulation pipes, and in particular to a multifunctional polyurethane continuous casting polyethylene thermal insulation pipe production line. Background Art

[0002] There are two existing methods for producing polyethylene insulated pipes. One is to spray polyurethane on the surface of the rust-removed steel pipe, and then wrap polyethylene insulation material on the surface to complete the processing of the insulation pipe. The other is to spray polyurethane on the surface of the rust-removed steel pipe, and then insert an external protective pipe on the outside of the steel pipe, and then inject insulation material foaming liquid into the gap between the steel pipe and the external protective pipe to complete the production of the insulation pipe. The two existing production processes require two different production lines to complete the processing, and the extrusion, winding and pressing process of polyethylene in the existing production line usually requires two equipment, an extruder and a press, to complete, which will increase the equipment footprint, and also increase the company's equipment cost investment and the workload of equipment maintenance. Summary of the invention

[0003] The main purpose of the present invention is to solve the problems existing in the prior art and to provide a polyethylene thermal insulation pipe production line which can meet the production and processing requirements of two processes for thermal insulation pipes of different diameters by one production line.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a multifunctional polyurethane continuous casting polyethylene insulated pipe production line, wherein the multifunctional polyurethane continuous casting polyethylene insulated pipe production line includes a rust removal part, a spraying conveyor line, a pouring conveyor line, a winding conveyor line, a spraying part, an injection part, a winding part and a finished pipe placement part, the output end of the rust removal part is connected to the input end of the spraying part, the spraying conveyor line, the pouring conveyor line and the winding conveyor line are arranged adjacent to each other in sequence, the output end of the winding conveyor line is connected to the input end of the finished pipe placement part, the spraying part, the injection part and the finished pipe platform are respectively arranged on both sides of the pouring conveyor line, and the winding part is arranged on one side of the winding conveyor line.

[0005] Furthermore, the spraying conveyor line, the pouring conveyor line and the winding conveyor line are co-linearly arranged at intervals, the spraying conveyor line and the winding conveyor line are both provided with hydraulic pipe pullers, and a heating mechanism is set up at the end of the spraying conveyor line.

[0006] Furthermore, the spraying conveyor line, the pouring conveyor line and the winding conveyor line all include a conveyor line main frame, a roller mechanism and a reversing adjustment mechanism. A plurality of roller mechanisms are arranged on the conveyor line main frame, and the reversing adjustment mechanism is connected to the roller mechanism. A plurality of cross beams are arranged in parallel on the top of the conveyor line main frame. The roller mechanism includes a driving wheel mechanism and a driven wheel mechanism. A driving wheel mechanism and a driven wheel mechanism are arranged on each group of the cross beams. The reversing adjustment mechanism includes a reversing connecting rod mechanism, a steering rod and a fixed beam. The reversing connecting rod mechanism is hingedly connected to the driving wheel mechanism and the driven wheel mechanism. The steering rod is fixedly arranged on the reversing connecting rod mechanism, and the steering rod is penetrated in the fixed beam. The fixed beam is fixedly arranged on the conveyor line main frame, and a threaded hole is provided on the fixed beam, and an adjustment screw is cooperatively penetrated in the threaded hole.

[0007] Furthermore, the winding part includes a polyethylene feeder, an extrusion press and a cutter, the output end of the polyethylene feeder is connected to the feed port of the extrusion press, the extrusion press includes an extruder and a fixed pressing mechanism, a fixed pressing mechanism is fixedly arranged on one side of the extruder, the discharge port of the extruder is connected to a mold mechanism, the mold mechanism includes a mold connecting mechanism and an extrusion mold, the extrusion mold is fixedly arranged at the discharge port of the extruder through the mold connecting mechanism, and the cutter is arranged at one side of the winding conveyor line.

[0008] Further, the fixed pressing mechanism includes a fixing mechanism and a pressing machine, the pressing machine is arranged on the fixing mechanism, the fixing mechanism is fixedly arranged on the side of the extruder, the fixing mechanism includes two groups of fixing ears and a limit block, the two groups of the fixing ears are provided with a slider mounting groove, the limit block is slidably penetrated in the slider mounting groove in cooperation, a spring is fixedly arranged on one side wall of the slider mounting groove, the end of the spring away from the extruder contacts with a side surface of the limit block, the pressing machine includes a pressing roller, a fixed arm and a telescopic arm, rotating shafts are fixedly arranged on both sides of the pressing roller, the rotating shaft is cooperated and penetrated on the telescopic arm, a sliding groove is provided on the fixed arm along its axial direction, the sliding groove passes through the end face of one side of the fixed arm, a threaded hole is provided on the outer wall of the fixed arm, a fastening screw is screwed in the threaded hole, a stepped shaft is fixedly arranged on the inner wall of the fixed arm, an adjusting gear is arranged on a section of the stepped shaft close to the inner wall of the fixed arm, the adjusting gear structure cooperates with the limit block structure, and the telescopic arm is slidably penetrated in the sliding groove.

[0009] Furthermore, the spraying part includes a material chamber and a sprayer, the material chamber is connected to the feed port of the sprayer, the spray gun part of the sprayer is arranged in the spraying chamber, the output end of the spraying conveyor line is connected to the input end of the spraying chamber, the output end of the spraying chamber is connected to the input end of the pouring conveyor line, the injection part includes an injection chamber, a proportional pump, an injection gun and a hydraulic lifting device, the proportional pump is fixedly arranged in the injection chamber, the proportional pump is connected to the injection gun through a pipeline, and the hydraulic lifting device is movably arranged on one side of the pouring conveyor line.

[0010] Furthermore, the rust removal part includes a rust removal conveyor line, a hydraulic pipe puller, a shot blasting rust removal machine, a steel pipe storage platform and a transition platform. The rust removal conveyor line is provided with a hydraulic pipe puller. The rust removal conveyor line includes a rust removal conveyor line 1 and a rust removal conveyor line 2. A shot blasting rust removal machine is arranged between the conveyor line 1 and the conveyor line 2. The output end of the steel pipe storage platform is connected to the input end of the rust removal conveyor line 1, the output end of the rust removal conveyor line 2 is connected to the input end of the transition platform, and the output end of the transition platform is connected to the input end of the spray conveyor line.

[0011] Furthermore, the finished pipe placement part includes a finished pipe conveyor line and a finished pipe platform 2, a hydraulic pipe puller is arranged on the finished pipe conveyor line, one side of the finished pipe conveyor line is connected to the input end of the finished pipe platform 2, and the input end of the finished pipe conveyor line is connected to the output end of the winding conveyor line.

[0012] Furthermore, the heating mechanism includes a medium frequency heating chamber and a control cabinet. The medium frequency heating chamber is mounted on the spray conveying line. The medium frequency heating chamber is electrically connected to the control cabinet. The hydraulic tube puller is connected to the hydraulic station through a pipeline.

[0013] The advantages and positive effects of the present invention are:

[0014] 1. The multifunctional polyurethane continuous casting polyethylene insulated pipe production line provided by the present invention can meet the production process requirements of different insulated pipes, and realizes the function that one production line can meet the production and processing of insulated pipes with two different process requirements.

[0015] 2. The conveyor line in the present invention can convey and process insulated pipes of different diameters by setting a roller mechanism, and by changing the angle of the roller mechanism on the conveyor line, different modes of movement of the insulated pipe can be achieved, thereby meeting the requirements for the movement mode of the steel pipe in the insulated pipe processing technology.

[0016] 3. The present invention can process thermal insulation pipes of different diameters by adding an adjustable pressing mechanism to the extruder, and enables the extruder to press polyethylene while winding the polyethylene, thereby reducing the number of equipment on the production line, thereby reducing the floor space of the entire production line, and also reducing the company's cost investment in production equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic top view of the overall structure of the present invention.

[0018] Figure 2 It is the overall structural diagram of the spraying conveyor line.

[0019] Figure 3 It is a schematic diagram of the installation of the driven wheel mechanism and the reversing connecting rod mechanism in the present invention.

[0020] Figure 4 It is a front view schematic diagram of the spraying conveyor line.

[0021] Figure 5 yes Figure 4 Schematic diagram of the AA section.

[0022] Figure 6 It is a schematic structural diagram of the extrusion laminating machine in the present invention.

[0023] Figure 7 It is a schematic diagram of the fixed pressing mechanism in the present invention.

[0024] Figure 8 It is a schematic structural diagram of the fixing ear in the present invention.

[0025] Fig. 9 yes Figure 8 Schematic diagram of the AA section.

[0026] In the figure: rust removal part 10, rust removal conveyor line 1 101, hydraulic pipe puller 102, shot blasting rust removal machine 103, steel pipe storage platform 104, transition platform 105, rust removal conveyor line 2 106, spraying conveyor line 20, conveyor line main frame 201, roller mechanism 202, driving wheel mechanism 2021, driven wheel mechanism 2022, reversing adjustment mechanism 203, cross beam 204, fixed beam 207, adjustment rod 208, reversing connecting rod mechanism 209, casting conveyor line 30, finished pipe platform 1 301, winding conveyor line 40, injection part 50, injection chamber 501, proportional pump 502, injection gun 503 , hydraulic lifting device 504, winding part 60, polyethylene feeder 601, extrusion pressing machine 602, extruder 6021, fixed pressing mechanism 6022, fixed ear 6023, limit block 6024, pressure roller 6025, fixed arm 6026, telescopic arm 6027, adjusting gear 6028, fastening screw 6029, cutting machine 603, spraying part 70, material chamber 701, spray machine 702, spray gun 703, spraying room 704, finished pipe placement part 80, finished pipe conveyor line 801, finished pipe platform two 802, heating mechanism 90, medium frequency heating chamber 901, control cabinet 902. DETAILED DESCRIPTION

[0027] In order to better understand the present invention, the present invention is further described below in conjunction with specific embodiments and drawings.

[0028] like Figures 1 to 9 As shown, the multifunctional polyurethane continuous casting polyethylene insulated pipe production line includes a rust removal part 10, a spraying conveyor line 20, a pouring conveyor line 30, a winding conveyor line 40, an injection part 50, a winding part 60, a spraying part 70 and a finished pipe placement part 80. The output end of the rust removal part 10 is connected to the input end of the spraying conveyor line 20. The spraying conveyor line 20, the pouring conveyor line 30 and the winding conveyor line 40 are arranged adjacent to each other in sequence. The output end of the winding conveyor line 40 is connected to the input end of the finished pipe placement part 80. The spraying part 70, the injection part 50 and the finished pipe platform 301 are respectively arranged on both sides of the pouring conveyor line 30, and the winding part 60 is arranged on one side of the winding conveyor line 40.

[0029] The spraying conveyor line 20, the pouring conveyor line 30 and the winding conveyor line 40 are arranged in the same line and at intervals. The hydraulic tube puller 102 is fixed to the spraying conveyor line 20 and the winding conveyor line 40 by screws, and the heating mechanism 90 is fixed to the end of the spraying conveyor line 20 by screws.

[0030] The spraying conveyor line 20, the pouring conveyor line 30 and the winding conveyor line 40 all include a conveyor line main frame 201, a roller mechanism 202 and a reversing adjustment mechanism 203. A plurality of roller mechanisms 202 are arranged on the conveyor line main frame 201. The reversing adjustment mechanism 203 is connected to the roller mechanism 202. A plurality of crossbeams 204 are welded in parallel on the top of the conveyor line main frame 201. The roller mechanism 202 includes a driving wheel mechanism 2021 and a driven wheel mechanism 2022. The driving wheel mechanism 2021 is arranged on each crossbeam 204 by screws. The reversing adjustment mechanism 203 includes a reversing link mechanism 209, a steering rod 208 and a fixed beam 207. The reversing link mechanism 209 is hingedly connected to the driving wheel mechanism 2021 and the driven wheel mechanism 2022. The steering rod 208 is fixed to the reversing link mechanism 209 by screws, and the steering rod 208 is inserted into the fixed beam 207. The fixed beam 207 is welded and fixed to the main frame 201 of the conveyor line, and a threaded hole is provided on the fixed beam 207, and an adjustment screw is inserted in the threaded hole. The direction of the roller mechanism 202 is adjusted by the reversing link mechanism 209. When the angle between the roller mechanism 202 and the beam 204 is an acute angle, the movement mode of the steel pipe is to rotate while moving forward. When the roller mechanism 202 is parallel to the beam 204, the movement mode of the steel pipe is only rotation. When the roller mechanism 202 is perpendicular to the beam 204, the movement mode of the steel pipe is only forward movement.

[0031] The winding part 60 includes a polyethylene feeder 601, an extrusion press machine 602 and a cutter 603. The output end of the polyethylene feeder 601 is connected to the feed port of the extrusion press machine 602. The extrusion press machine 602 includes an extruder 6021 and a fixed pressing mechanism 6022. The fixed pressing mechanism 6022 is fixedly arranged on one side of the extruder 6021. The discharge port of the extruder 6021 is connected to the mold mechanism by screws. The mold mechanism includes a mold connecting mechanism and an extrusion mold. The extrusion mold is connected to the mold connecting mechanism by screws. The nail is fixed to the discharge port of the extruder 6021, and the cutter 603 is arranged at intervals on one side of the winding conveyor line 40. The polyethylene raw material is put into the extruder 6021 through the polyethylene feeder 601, and then the treated polyethylene is extruded through the extruder 6021, and then the formed polyethylene is wound onto the surface of the steel pipe through the extrusion die. As the steel pipe rotates forward, the pressing mechanism presses the polyethylene wound on the steel pipe, and the polyethylene on the steel pipe that has been wound with polyethylene is cut by the cutter 603.

[0032] The fixed pressing mechanism 6022 includes a fixing mechanism and a pressing machine, the pressing machine is arranged on the fixing mechanism, the fixing mechanism is fixedly arranged on the side of the extruder 6021, the fixing mechanism includes two groups of fixing ears 6023 and a limit block 6024, the two groups of fixing ears 6023 are provided with a slider installation groove, the limit block 6024 is matched and slidably penetrated in the slider installation groove, a spring is fixed by welding on one side wall of the slider installation groove, one end of the spring away from the extruder is in contact with one side of the limit block 6024, and the spring is always in a compressed state, the limit block 6024 is clamped on the adjusting gear 6028 by the elastic force of the spring to ensure the firmness of the limit, and the pressing machine includes a pressing roller 6025, fixed arm 6026 and telescopic arm 6027, fixed rotating shafts are welded on both sides of the pressure roller 6025, and the rotating shafts are matched with bearings and penetrated on the telescopic arm 6027, and a slide groove is provided on the fixed arm 6026 along its axis direction, and the slide groove passes through the end face of one side of the fixed arm 6026, and a threaded hole is provided on the outer wall of the fixed arm 6026, and a fastening screw 6029 is screwed in the threaded hole, and a fixed stepped shaft is welded on the inner wall of the fixed arm 6026, and an adjusting gear 6028 is welded on a section of the stepped shaft close to the inner wall of the fixed arm, and the adjusting gear 6028 cooperates with the limit block 6024, and the telescopic arm 6027 is slidably penetrated in the slide groove. The polyethylene wrapped on the insulation pipe is pressed by this fixed pressing mechanism 6022.

[0033] The spraying part 70 includes a material chamber 701, a spraying machine 702 and a spraying chamber 704. The material chamber 701 is connected to the feed port of the spraying machine 702 through a pipeline. The spray gun 703 of the spraying machine 702 is fixed and penetrated in the spraying chamber 704 by screws. The output end of the spraying conveying line 20 is connected to the input end of the spraying chamber 704, and the output end of the spraying chamber 704 is connected to the input end of the pouring conveying line 30. The injection part 50 includes an injection chamber 501, a proportional pump 502, an injection gun 503 and a hydraulic lifting device 504. The proportional pump 502 is set in the injection chamber 501 by screws, and the proportional pump 502 is connected to the injection gun 503 through a pipeline. The hydraulic lifting device 504 is movably set on one side of the pouring conveying line 30. The hydraulic lifting device 504 is fixed to the ground by bolts. The placement position of the hydraulic lifting device 504 can be moved and changed according to the processing requirements, and then fixed to the ground by bolts. The polyurethane spraying of the thermal insulation pipe is completed through the spraying part 70, and the thermal insulation layer material is injected into the space between the steel pipe and the outer protective pipe through the injection part 50.

[0034] The rust removal part 10 includes a rust removal conveyor line, a hydraulic pipe puller 102, a shot blasting rust removal machine 103, a steel pipe storage platform 104 and a transition platform 105. The hydraulic pipe puller 102 is fixed on the rust removal conveyor line by screws. The rust removal conveyor line includes a rust removal conveyor line 101 and a rust removal conveyor line 2 106. A steel pipe storage platform 104 is arranged on one side of the rust removal conveyor line 101, and a transition platform 105 is arranged on one side of the rust removal conveyor line 2 106. A shot blasting rust removal machine 103 is arranged between the conveyor line 101 and the conveyor line 2 106. The output end of the steel pipe storage platform is connected to the input end of the rust removal conveyor line 1, the output end of the rust removal conveyor line 2 is connected to the input end of the transition platform, and the output end of the transition platform is connected to the input end of the spray conveyor line. The steel pipe placed on the steel pipe storage platform 104 is placed on the rust removal conveyor line 101 through the hydraulic pipe puller 102, and then the rust removal conveyor line 101 sends the steel pipe to the shot blasting machine 103 for rust removal, and then the rust-removed steel pipe is placed on the transition platform 105 through the hydraulic pipe puller 102 on the rust removal conveyor line 2 106, in preparation for subsequent process processing.

[0035] The finished pipe placement part 80 includes a finished pipe conveyor line 801 and a finished pipe platform 802. A hydraulic pipe pusher 102 is set on the finished pipe conveyor line 801 by screws. One side of the finished pipe conveyor line 801 is connected to the input end of the finished pipe platform 802, and the input end of the finished pipe conveyor line 801 is connected to the output end of the winding conveyor line 40. The insulated pipe that has completed polyethylene winding and pressing is transmitted to the finished pipe conveyor line 801 through the winding conveyor line 40, and then the processed insulated pipe is placed on the finished pipe platform 802 by the hydraulic pipe pusher 102.

[0036] The heating mechanism 90 includes a medium frequency heating chamber 901 and a control cabinet 902. The medium frequency heating chamber 901 is mounted on the spray conveying line 20. The medium frequency heating chamber 901 is electrically connected to the control cabinet 902. The hydraulic pipe puller 102 is connected to the hydraulic station through a pipeline. The steel pipe is heated by the medium frequency heating chamber 901 to make the subsequent polyethylene spray easier to adhere to the surface of the steel pipe. The hydraulic station controls the hydraulic pipe puller 102 to move and place the steel pipe.

[0037] The specific working process of the present invention is as follows:

[0038] 1. When producing polyurethane spray-wrapped insulation pipe

[0039] 1. First, adjust the angle between the roller mechanism 202 and the crossbeam 204 in the conveyor line to an acute angle, and then the initial pipe placed on the steel pipe storage platform 104 is moved by the hydraulic pipe puller 102 and placed on the rust removal conveyor line 1 101, and then transported to the shot blasting machine 103 by the rust removal conveyor line 1 101. Under the push of the rust removal conveyor line 1 101, the steel pipe passes through the outlet of the rust removal machine after being processed by the shot blasting machine 103 and reaches the rust removal conveyor line 2 106, and then the rust removal conveyor line 2 106 is used to transport the steel pipe. When all the steel pipes are derusted, the hydraulic pipe puller 102 on the rust removal conveyor line 2 106 places the derusted steel pipe on the transition platform 105, and pushes the derusted steel pipe on the transition platform 105 to the hydraulic pipe puller 102 on the spray conveyor line 20.

[0040] 2. The hydraulic tube puller 102 places the derusted steel pipe on the spray conveyor line 20. The steel pipe is pushed forward by the spray conveyor line 20, and then passes through the medium frequency heating chamber 901 set up at the end of the spray conveyor line 20. The temperature of the outside of the steel pipe increases, which can make the polyurethane better adhere to the surface of the steel pipe. The steel pipe passing through the medium frequency heating chamber 901 enters the spray chamber 704 under the push of the spray conveyor line 20, and then the sprayer 702 sucks the polyurethane from the material chamber 701, and then sprays it out through the spray gun 703 set in the spray chamber 704, so that the polyurethane adheres to the surface of the steel pipe.

[0041] 3. After the steel pipe sprayed with polyurethane passes through the spraying room 704, it will reach the pouring conveyor line 30, and then reach the extrusion die of the extruder 6021 through the pushing steel pipe of the pouring conveyor line 30. At this time, the extruder 6021 is turned on to allow the extruded polyethylene to be extruded through the extrusion die in the required shape and structure and wound around the steel pipe sprayed with polyurethane, and then the wound polyethylene is pressed by the fixed pressing mechanism 6022 arranged on the extruder 6021.

[0042] 4. The pressed steel pipe continues to move forward and reaches the finished pipe conveyor line 801, and is transported together by the finished pipe conveyor line 801 and the winding conveyor line 40. When the end of the steel pipe reaches the position of the cutting machine 603, the cutting machine 603 is turned on to cut the polyethylene between two adjacent steel pipes. Then, when the entire steel pipe reaches the finished pipe conveyor line 801, the hydraulic pipe remover 102 places the steel pipe on the finished pipe platform 2 802 to complete the entire processing process.

[0043] 2. When producing polyurethane spray casting insulation pipe

[0044] 1. First, adjust the angle between the roller mechanism 202 and the crossbeam 204 on the rust removal conveyor line 101 and the rust removal conveyor line 2 106 to an acute angle, then adjust the roller mechanism 202 and the crossbeam 204 on the spraying conveyor line 20 and the pouring conveyor line 30 to a vertical state, and then use the hydraulic pipe puller 102 to move the initial pipe placed on the steel pipe storage platform 104 to the rust removal conveyor line 101, and then transport it from the rust removal conveyor line 101 to the shot blasting machine 103. In the process, the steel pipe is pushed by the rust removal conveyor line 101 and is processed by the shot blasting rust removal machine 103. Then, it passes through the outlet of the rust removal machine and arrives at the rust removal conveyor line 2 106, and then is transported by the rust removal conveyor line 2 106. When all the steel pipes are rust-free, the hydraulic pipe puller 102 on the rust removal conveyor line 2 106 places the rust-free steel pipe on the transition platform 105, and pushes the rust-free steel pipe on the transition platform 105 to the hydraulic pipe puller 102 on the spraying conveyor line 20.

[0045] 2. The hydraulic tube puller 102 then places the derusted steel pipe on the spray conveyor line 20. The steel pipe is pushed forward by the spray conveyor line 20, and then passes through the medium frequency heating chamber 901 installed at the end of the spray conveyor line 20. The temperature of the outside of the steel pipe increases, which can make the polyurethane adhere to the surface of the steel pipe better. The steel pipe passing through the medium frequency heating chamber 901 enters the spray chamber 704 under the push of the spray conveyor line 20, and then the sprayer 702 sucks the polyurethane from the material chamber 701, and then sprays it out through the spray gun 703 set in the spray chamber 704, so that the polyurethane adheres to the surface of the steel pipe.

[0046] 3. After the steel pipe sprayed with polyurethane passes through the spray chamber 704, it will reach the pouring conveyor line 30. At this time, the hydraulic lifting device 504 is placed between the pouring conveyor line 30 and the winding conveyor line 40, and the base of the hydraulic lifting device 504 is fixed to the ground by bolts, and then the height of the lifting arm is adjusted so that the steel pipe can be smoothly inserted. When the steel pipe reaches the pouring conveyor line 30 as a whole, the pouring conveyor line 30 is closed, and the hydraulic lifting device 504 is adjusted to lift the steel pipe a certain distance to facilitate the insertion of the outer protective pipe, and then the outer protective pipe is placed on the spray conveyor line 20 and pushed forward by the spray conveyor line 20. At this time, the spray is closed. Machine 702 and medium frequency heating chamber 901, after the outer protective tube passes through the medium frequency heating chamber 901 and the spraying chamber 704 in sequence, it reaches the pouring conveyor line 30, and then the pouring conveyor line 30 and the spraying conveyor line 20 push the outer protective tube forward together to put the outer protective tube on the steel pipe. When the outer protective tube is completely put on the steel pipe, the pouring conveyor line 30 is closed and the two ends of the outer protective tube are sealed with flanges, and a hole is opened on the outer protective tube, and then the injection gun 503 is inserted into the hole, and the insulation material in the injection chamber 501 is sucked in by the proportional pump 502 and the insulation material is injected into the cavity between the steel pipe and the outer protective tube through the injection gun 503.

[0047] 4. When pouring is completed, the processed insulation pipe is placed on the finished pipe platform 301 through the hydraulic pipe puller 102. After the insulation material is fully foamed, the flanges at both ends of the outer protective pipe can be removed. At this time, the entire process is completed.

[0048] The embodiments of the present invention are described in detail above, but the contents described are only preferred embodiments of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of this patent.

Claims

1. Multifunctional polyurethane continuous casting polyethylene insulation pipe production line, characterized by: The multifunctional polyurethane continuous casting polyethylene insulation pipe production line comprises a rust removal part, a spraying conveyor line, a pouring conveyor line, a winding conveyor line, a spraying part, a material injection part, a winding part and a finished pipe placement part. The output end of the rust removal part is connected to the input end of the spraying part. The spraying conveyor line, the pouring conveyor line and the winding conveyor line are arranged adjacent to each other in sequence. The output end of the winding conveyor line is connected to the input end of the finished pipe placement part. The two sides of the pouring conveyor line are respectively provided with a spraying part, a material injection part and a finished pipe platform 1, and one side of the winding conveyor line is provided with a winding part. The spraying conveyor line, the pouring conveyor line and the winding conveyor line all include a conveyor line main frame, a roller mechanism and a reversing adjustment mechanism. The conveyor line main frame is provided with multiple groups of roller mechanisms, and the reversing adjustment mechanism is connected to the roller mechanism. Multiple groups of cross beams are arranged in parallel on the top of the conveyor line main frame. The roller mechanism includes a driving wheel mechanism and a driven wheel mechanism. Each group of the cross beams is provided with a driving wheel mechanism and a driven wheel mechanism. The reversing adjustment mechanism includes a reversing connecting rod mechanism, a direction adjusting rod and a fixed beam. The reversing connecting rod mechanism is hingedly connected to the driving wheel mechanism and the driven wheel mechanism. The direction adjusting rod is fixedly arranged on the reversing connecting rod mechanism, and the direction adjusting rod is penetrated in the fixed beam. The fixed beam is fixedly arranged on the conveyor line main frame, and a threaded hole is provided on the fixed beam, and an adjusting screw is matched and penetrated in the threaded hole. The direction of the roller mechanism is adjusted by the reversing link mechanism. When the angle between the roller mechanism and the beam is acute, the steel pipe moves forward while rotating. When the roller mechanism is parallel to the beam, the steel pipe only moves in rotation. When the roller mechanism is perpendicular to the beam, the steel pipe only moves forward. The fixed pressing mechanism comprises a fixing mechanism and a pressing machine, the pressing machine is arranged on the fixing mechanism, the fixing mechanism is fixedly arranged on the side of the extruder, the fixing mechanism comprises two groups of fixing ears and a limiting block, the two groups of fixing ears are provided with a slider mounting groove, the limiting block is slidably penetrated in the slider mounting groove in cooperation, a spring is fixedly arranged on one side wall of the slider mounting groove, one end of the spring away from the extruder contacts with one side of the limiting block, the pressing machine comprises a pressing roller, a fixed arm and a telescopic arm, a rotating shaft is fixedly arranged on both sides of the pressing roller, the rotating shaft is cooperated and penetrated on the telescopic arm, a sliding groove is provided on the fixed arm along its axial direction, the sliding groove passes through the end face of one side of the fixed arm, a threaded hole is provided on the outer wall of the fixed arm, a fastening screw is screwed in the threaded hole, a stepped shaft is fixedly arranged on the inner wall of the fixed arm, an adjusting gear is arranged on a section of the stepped shaft close to the inner wall of the fixed arm, the adjusting gear structure cooperates with the limiting block structure, and the telescopic arm is slidably penetrated in the sliding groove; When producing polyurethane spray-wrapped thermal insulation pipes; S1: First, adjust the angle between the roller mechanism and the crossbeam in the conveyor line to an acute angle, and then use the hydraulic pipe puller to move the initial pipe placed on the steel pipe storage platform to the rust removal conveyor line 1, and then convey it to the shot blasting machine by the rust removal conveyor line 1. Under the push of the rust removal conveyor line 1, the steel pipe passes through the outlet of the rust removal machine after being processed by the shot blasting machine and reaches the rust removal conveyor line 2, and then the rust removal conveyor line 2 transports the steel pipe. When all the steel pipes are rust-free, the hydraulic pipe puller on the rust removal conveyor line 2 places the rust-free steel pipe on the transition platform, and pushes the rust-free steel pipe on the transition platform to the hydraulic pipe puller on the spraying conveyor line; S2: The derusted steel pipe is placed on the spray conveyor line by a hydraulic pipe puller. The steel pipe is pushed forward by the spray conveyor line, and then passes through the medium frequency heating chamber installed at the end of the spray conveyor line. The temperature of the outer surface of the steel pipe increases, which can make the polyurethane adhere to the surface of the steel pipe better. The steel pipe that has passed through the medium frequency heating chamber enters the spray chamber under the push of the spray conveyor line, and then the sprayer sucks the polyurethane from the material chamber and sprays it out through the spray gun set in the spray chamber, so that the polyurethane adheres to the surface of the steel pipe; S3: After the steel pipe sprayed with polyurethane passes through the spraying room, it will reach the casting conveyor line, and then the pushing steel pipe of the casting conveyor line will reach the extrusion die of the extruder. At this time, the extruder is turned on to extrude the polyethylene through the extrusion die in the required shape and structure and wrap it around the steel pipe sprayed with polyurethane, and then the wrapped polyethylene is pressed by a fixed pressing mechanism set on the extruder; S4: The pressed steel pipe continues to move forward and reaches the finished pipe conveyor line, and is transported together by the finished pipe conveyor line and the winding conveyor line. When the end of the steel pipe reaches the position of the cutting machine, the cutting machine is turned on to cut the polyethylene between two adjacent steel pipes. Then, when the entire steel pipe reaches the finished pipe conveyor line, the hydraulic pipe puller places the steel pipe on the finished pipe platform 2 to complete the entire processing process. When producing polyurethane spray-casting insulation pipes; C1: First, adjust the angle between the roller mechanism and the crossbeam on the rust removal conveyor line 1 and the rust removal conveyor line 2 to an acute angle, then adjust the roller mechanism and the crossbeam on the spraying conveyor line and the pouring conveyor line to a vertical state, and then use the hydraulic pipe puller to move the initial pipe placed on the steel pipe storage platform to the rust removal conveyor line 1, and then transport it to the shot blasting machine by the rust removal conveyor line 1. Under the push of the rust removal conveyor line 1, the steel pipe passes through the outlet of the rust removal machine after being processed by the shot blasting machine and reaches the rust removal conveyor line 2, and then the rust removal conveyor line 2 transports the steel pipe. When all the steel pipes are rust-free, the hydraulic pipe puller on the rust removal conveyor line 2 places the rust-free steel pipe on the transition platform, and pushes the rust-free steel pipe on the transition platform to the hydraulic pipe puller on the spraying conveyor line; C2: The derusted steel pipe is then placed on the spray conveyor line by a hydraulic pipe puller. The steel pipe is pushed forward by the spray conveyor line, and then passes through the medium frequency heating chamber installed at the end of the spray conveyor line. The temperature of the steel pipe outside increases, which can make the polyurethane adhere to the surface of the steel pipe better. The steel pipe that has passed through the medium frequency heating chamber enters the spray chamber under the push of the spray conveyor line, and then the sprayer sucks the polyurethane from the material chamber and sprays it out through the spray gun installed in the spray chamber, so that the polyurethane adheres to the surface of the steel pipe; C3: After the steel pipe sprayed with polyurethane passes through the spray room, it will reach the pouring conveyor line. At this time, the hydraulic lifting device is placed between the pouring conveyor line and the winding conveyor line, and the base of the hydraulic lifting device is fixed to the ground with bolts. Then the height of the lifting arm is adjusted so that the steel pipe can be smoothly inserted. When the steel pipe reaches the pouring conveyor line as a whole, the pouring conveyor line is closed, and the hydraulic lifting device is adjusted to lift the steel pipe a certain distance to facilitate the insertion of the outer protective pipe. Then the outer protective pipe is placed on the spraying conveyor line and pushed forward by the spraying conveyor line. At this time Close the spraying machine and the medium frequency heating chamber, and after the outer protective tube passes through the medium frequency heating chamber and the spraying chamber in sequence, it reaches the pouring conveying line, and then the outer protective tube is pushed forward together on the pouring conveying line and the spraying conveying line to put the outer protective tube on the steel pipe. When the outer protective tube is completely put on the steel pipe, close the pouring conveying line and seal the two ends of the outer protective tube with flanges, and open a hole on the outer protective tube, and then insert the injection gun into the hole, and suck the insulation material in the injection chamber through the proportional pump and inject the insulation material into the cavity between the steel pipe and the outer protective tube through the injection gun; C4: When pouring is completed, the finished insulation pipe is placed on the finished pipe platform 1 through the hydraulic pipe puller. After the insulation material is fully foamed, the flanges at both ends of the outer protective pipe can be removed. At this time, the entire process is completed.

2. The multifunctional polyurethane continuous casting polyethylene insulation pipe production line according to claim 1 is characterized by: The spraying conveying line, the pouring conveying line and the winding conveying line are arranged in the same line and at intervals. The spraying conveying line and the pouring conveying line are both provided with hydraulic pipe pullers, and a heating mechanism is set up at the end of the spraying conveying line.

3. The multifunctional polyurethane continuous casting polyethylene insulation pipe production line according to claim 1 is characterized by: The winding part includes a polyethylene feeder, an extrusion press and a cutter. The output end of the polyethylene feeder is connected to the feed port of the extrusion press. The extrusion press includes an extruder and a fixed pressing mechanism. The fixed pressing mechanism is fixedly arranged on one side of the extruder. The discharge port of the extruder is connected to a mold mechanism. The mold mechanism includes a mold connecting mechanism and an extrusion mold. The extrusion mold is fixedly arranged at the discharge port of the extruder through the mold connecting mechanism. The cutter is arranged at one side of the winding conveyor line.

4. The multifunctional polyurethane continuous casting polyethylene insulation pipe production line according to claim 1 is characterized by: The spraying part includes a material chamber and a sprayer, the material chamber is connected to the feed port of the sprayer, the spray gun part of the sprayer is arranged in the spraying chamber, the output end of the spraying conveying line is connected to the input end of the spraying chamber, the output end of the spraying chamber is connected to the input end of the pouring conveying line, the injection part includes an injection chamber, a proportional pump, an injection gun and a hydraulic lifting device, the proportional pump is fixedly arranged in the injection chamber, the proportional pump is connected to the injection gun through a pipeline, and the hydraulic lifting device is movably arranged on one side of the pouring conveying line.

5. The multifunctional polyurethane continuous casting polyethylene insulation pipe production line according to claim 1 is characterized by: The rust removal part includes a rust removal conveyor line, a hydraulic pipe puller, a shot blasting rust removal machine, a steel pipe storage platform and a transition platform. The rust removal conveyor line is provided with a hydraulic pipe puller. The rust removal conveyor line includes a rust removal conveyor line 1 and a rust removal conveyor line 2. A shot blasting rust removal machine is arranged between the conveyor line 1 and the conveyor line 2. The output end of the steel pipe storage platform is connected to the input end of the rust removal conveyor line 1, the output end of the rust removal conveyor line 2 is connected to the input end of the transition platform, and the output end of the transition platform is connected to the input end of the spray conveyor line.

6. The multifunctional polyurethane continuous casting polyethylene insulation pipe production line according to claim 1 is characterized by: The finished pipe placement part includes a finished pipe conveyor line and a finished pipe platform 2. A hydraulic pipe puller is arranged on the finished pipe conveyor line. One side of the finished pipe conveyor line is connected to the input end of the finished pipe platform 2, and the input end of the finished pipe conveyor line is connected to the output end of the winding conveyor line.

7. The multifunctional polyurethane continuous casting polyethylene insulation pipe production line according to claim 1 is characterized by: The heating mechanism comprises a medium frequency heating chamber and a control cabinet. The medium frequency heating chamber is mounted on the spraying conveying line. The medium frequency heating chamber is electrically connected to the control cabinet. The hydraulic tube puller is connected to the hydraulic station through a pipeline.

Images