CN111633938A

CN111633938A - PE water supply pipe extrusion production line and production process

Info

Publication number: CN111633938A
Application number: CN202010491080.0A
Authority: CN
Inventors: 王颐其
Original assignee: Shaanxi Flying Pipe Technology Co ltd
Current assignee: Shaanxi Flying Pipe Technology Co ltd
Priority date: 2020-06-02
Filing date: 2020-06-02
Publication date: 2020-09-08

Abstract

The invention relates to a PE water supply pipe extrusion production line and a production process, relating to the technical field of pipe production equipment, wherein the production line comprises a frame, an extruder, a forming machine, a tractor, a cooling tank, a hot oven, a premixing hopper and a measuring assembly, wherein the top end of the extruder is provided with a transfer feeding hopper and a conveying unit, the conveying unit comprises a feeding pipe and a feeding pump, the premixing hopper is provided with a storage tank and a heating and stirring unit, the waste heat of the device is fully utilized to dry materials, the energy is saved, the drying efficiency is high, the premixed materials are discharged into the storage tank, when the transfer feeding hopper continuously feeds the extruder, the materials in the storage tank are accumulated to buffer the materials for the transfer feeding hopper, the materials can also play a role of blocking when the formula of the materials is changed, the feeding pump is started after the residual materials are discharged by the transfer feeding hopper, new materials are sucked into the transfer feeding hopper from the storage tank, the production formula and the, the counterweight process is accurate, the feeding amount can be continuously adjusted according to the extrusion process, and the quality of the finished product of the pipe is improved.

Description

PE water supply pipe extrusion production line and production process

Technical Field

The invention relates to the technical field of pipe production equipment, in particular to a PE water supply pipe extrusion production line and a production process.

Background

The plastic pipeline industry in China is developed rapidly in recent years, the share of plastic pipeline products in the pipeline market is continuously expanded, and the plastic pipeline products become visible and widely recognized products everywhere. The PE water supply pipe is formed by one-step extrusion of special polyethylene serving as a raw material through a plastic extruder, is applied to urban water supply pipe networks, irrigation diversion projects and agricultural sprinkling irrigation projects, and is particularly suitable for acid-base-resistant and corrosion-resistant plastic pipes. Because the PE pipeline adopts hot melting and electric hot melting connection, the integration of the interface and the pipe is realized, the annular stress and the axial impact stress generated by pressure can be effectively resisted, and the PE pipe is not added with a heavy metal salt stabilizer, has non-toxic material, does not scale, does not breed bacteria, and avoids the secondary pollution of drinking water. During the fifteen' period, the rapid growth of the plastic pipe industry has promoted the technological progress of the industry. Many enterprises attach importance to international frontier technology, attach importance to the development of new products and the introduction of new technologies, and continuously enhance the research and development of new products while introducing advanced processing equipment. While the plastic pipeline industry in China is developing, some problems are increasingly revealed. Particularly, the raw material variety is few, the quality is unstable, the price fluctuation is large, special materials are lacked, the product quality cannot be guaranteed, the product structure, the production scale is unreasonable, the production equipment and the product quality are poor in total, the management is disordered, the standards, the specifications, the atlas, the quota and the like are seriously lagged, the matching performance is poor, the development requirement cannot be met, and the further development and the quality improvement of the industry are severely restricted by the lack of practical inspection and other factors.

The processing production of the pipe mainly depends on the extrusion molding of the pipe, and then auxiliary equipment such as shaping, cooling, cutting and the like is added to prepare the required pipe. The most fundamental place influencing the quality of the pipe is the basic forming step of the pipe, which is characterized in that the discharging meter weight of the pipe is strictly controlled, the meter weight is properly controlled, the quality of the pipe formed by extrusion is higher, and the pipe surface is uniform and has no protrusion. For the prior art, an accurate meter weight control device is not arranged in a feeding system of the extruder, the meter weight of the pipe blanking can not be strictly controlled, and the quality of pipe extrusion in the extruder is low.

For example, chinese utility model patent No. CN203527846U discloses a pipe extruder. The machine comprises a frame, be equipped with the extruder barrel in the frame, the discharge end of extruder barrel passes through the connecting pipe and is connected with the aircraft nose, the aircraft nose is installed in the frame, the aircraft nose is by the overcoat that is the frustum form, arrange the mold core in the overcoat in and locate overcoat and mold core tip and be equipped with the shrouding of annular discharge opening and constitute, inner wall at the overcoat and the outer wall of mold core all are equipped with and are wavy concave-convex structure, thereby form a plurality of wave crooked runners between overcoat and mold core, the both ends of wave crooked runner communicate connecting pipe and annular discharge opening respectively. The pipe extruder is provided with the bent flow channel, so that materials can be extruded stably, the processing efficiency is high, and the quality of produced products is good. The bottom of the conical section of the hopper is provided with an inclined baffle plate extending into the machine barrel of the extruder. Under the action of the inclined baffle, the material dispersing device plays a role in dispersing materials, so that the materials cannot be gathered.

The above prior art solutions have the following drawbacks: the raw materials need to be continuously and uniformly mixed by balancing weight in the production process and continuously input into a feeding port on a machine barrel of the extruder, the balancing weight process is unstable, the extrusion speed needs to be changed according to the feeding and the excess materials, the meter weight of the blanking of the pipe cannot be strictly controlled, and the quality of the pipe extrusion in the extruder is low.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a PE water supply pipe extrusion production line which is convenient for premixing raw materials in advance and is convenient for continuous production.

The above object of the present invention is achieved by the following technical solutions: the utility model provides a PE feed pipe extrusion line, includes frame, extruder, make-up machine, tractor, cooling tank, hot oven, the frame in extruder one side is equipped with the premix fill, be equipped with on the premix fill and weigh the subassembly, the extruder top is equipped with transfer feed hopper, transfer feed hopper with be equipped with conveying unit between the premix fill, including locating conveying pipe and the delivery pump on the transfer feed hopper, the output of premix fill below is equipped with deposits the silo, be equipped with the heating stirring unit in the premix fill.

Through adopting above-mentioned technical scheme, it sets up premixing groove, deposit the silo, the transfer feed hopper, it conveniently prepares burden to weigh the subassembly, open heating stirring unit, can be continuous premixing and drying in premixing the inslot, the material that finishes in premixing discharges and deposits the silo, simultaneously when the transfer feed hopper lasts for the extruder feed, the material constantly accumulates in the deposit silo, set up the deposit silo, can be for transfer feed hopper buffer memory material, play the wall effect when changing material formulation, the charge pump is opened immediately after being convenient for transfer feed hopper discharges the residual material, it inhales transfer feed hopper by the conveying pipe from the deposit silo to newly allocate the material, conveniently change production formulation and product, its feed is stable to last, the counter weight process is accurate, and can be according to the constantly adjustment feed volume of extrusion process, promote the finished product quality of tubular product.

The present invention in a preferred example may be further configured to: the output end below the premixing hopper is provided with a discharge pipe facing the material storage groove, the periphery of the discharge pipe is provided with a material blocking barrel, and the material storage groove is provided with a fan-shaped material receiving plate below the discharge pipe.

Through adopting above-mentioned technical scheme, set up the discharging pipe and make things convenient for the material that will mix the completion in advance to discharge into and deposit the silo, the material splashes when it sets up to keep off the feed cylinder and avoids the ejection of compact, sets up sectorial flitch that connects simultaneously, and convenient further connecing the material, reduces the material and strikes the departure.

The present invention in a preferred example may be further configured to: the heating and stirring unit comprises a stirring paddle arranged in the premixing hopper and a hot air pipe arranged on the premixing hopper, and a bag-type dust remover is arranged at the top end of the premixing hopper.

Through adopting above-mentioned technical scheme, set up stirring rake and hot-blast main, at the continuous hot air drying that carries on of stirring in-process, the material is constantly dried in mixing process, sets up the sack cleaner and can separate the dust in the preliminary mixing fill.

The present invention in a preferred example may be further configured to: a plurality of elastic binding bands are arranged between the premixing hopper and the hot air pipe and between the premixing hopper and the feeding pipe.

Through adopting above-mentioned technical scheme, set up elastic bandage and conveniently connect in advance hopper and hot-blast main, conveying pipe and be connected, the vibrations of hot-blast main, conveying pipe when slowing down in the advance hopper stirring avoid hot-blast main, conveying pipe and advance hopper junction to take place the damage.

The present invention in a preferred example may be further configured to: and a heating calandria is arranged on one side of the heat drying oven, a conveying fan is arranged on one side of the heat drying oven, and the hot air pipe is communicated with the conveying fan.

Through adopting above-mentioned technical scheme, set up the convenient heating in hot oven of heating calandria, set up simultaneously and carry fan and hot-blast main, conveniently with hot oven hot-blast air leading-in to premixing groove along the hot-blast main, the material is dried in the convenient waste heat that utilizes in the hot oven to premixing fill.

The present invention in a preferred example may be further configured to: and heat exchange coil pipes are distributed on the periphery of the heating part of the extruder, and two ends of each heat exchange coil pipe are communicated with the hot air pipe.

Through adopting above-mentioned technical scheme, it has heat exchange coil to distribute at extruder heating portion periphery, makes things convenient for the hot-blast main to carry out further heating through heat exchange coil, promotes hot-blast temperature, avoids hot-blast temperature to descend in the hot-blast main simultaneously, and hoisting device's heat utilization efficiency promotes the heating efficiency who mixes the fill in advance.

The present invention in a preferred example may be further configured to: the frame is provided with a plurality of toner bins, a conveying pipeline is arranged between the toner bins and the premixing hopper, a flowmeter is arranged on the conveying pipeline, a central controller is additionally arranged on the conveying pipeline, and the flowmeter, the extruder and the tractor are all communicated with the central controller.

Through adopting above-mentioned technical scheme, set up toner storehouse and pipeline, conveniently carry out the batching, set up the flowmeter, conveniently make statistics of toner volume and gather to central controller, can be according to the production demand, central controller control ratio raw materials do and collect traction speed, extrusion speed according to flowmeter, extruder, tractor etc. conveniently control the rice weight of tubular product unloading, last stable production.

The present invention in a preferred example may be further configured to: the weighing assembly comprises an electronic scale arranged at the lower end of the storage trough and a weighing sensor arranged on the pre-mixing hopper, and the weighing sensor and the electronic scale are communicated with the central controller.

Through adopting above-mentioned technical scheme, the electronic scale of material storage tank lower extreme setting conveniently weighs the material that finishes mixing, and convenient adjustment sets up weighing sensor on the pre-mixing bucket, makes things convenient for each raw materials ratio of pre-mixing bucket adjustment, makes things convenient for the batching.

The invention aims to provide a production process of a PE water supply pipe, which comprises the following steps; s1, starting the extruder, the forming machine and the hot oven device for preheating;

s2, inputting the raw material proportion, controlling the toner bin and the premixing hopper to finish feeding according to the proportion by the central controller, starting the stirring paddle and the conveying fan, guiding hot air in the hot oven in the preheating process into the premixing tank, and monitoring the feeding quality by the weighing sensor;

s3, the central controller opens the discharge pipe to convey the mixed material in the premixing hopper to the material storage tank, and the premixing hopper performs the next round of burdening and premixing;

s4, the central controller starts a feed pump on the transfer feed hopper to convey the mixture into the transfer feed hopper;

s5, starting the forming machine, the tractor, the cooling pool and the hot oven, transferring the materials into the extruder through the transfer feeding hopper, and starting extrusion;

s6, butting, namely butting and drawing the pipeline and the tractor;

s7, adjusting and correcting, wherein the central controller adjusts the traction speed of the tractor according to the extrusion speed of the extruder and the feeding speed of the transfer feeding hopper;

and S8, cooling, spraying codes and cutting.

By adopting the technical scheme, in the production process, the central controller conveniently controls color dust and other materials to be conveyed to the premixing hopper, the materials are proportioned through the weighing sensor, then the residual heat of the extruder, the forming machine and the hot oven during the preheating of the machine can be fully utilized, hot air is guided into the premixing hopper, the materials are conveniently stirred and dried, the dried materials are discharged into the storage tank, the premixing hopper carries out the next round of proportioning and premixing, the continuous production is convenient, the device formally runs, the material feeding of the transferring feeding hopper is carried out to the extruder, the extrusion is started, the pipeline is in butt joint with the tractor for traction, the central controller adjusts the traction speed of the tractor according to the extrusion speed of the extruder and the feeding speed of the transferring feeding hopper, the cooling, the code spraying and the cutting are carried out, the whole pipe production process is controlled to be stable and uniform in production, the feeding is stable and continuous, the weight balancing process, and the feeding amount can be continuously adjusted according to the extrusion process, so that the quality of the finished product of the pipe is improved.

In summary, the invention includes at least one of the following beneficial technical effects:

1. the extruder is provided with a premixing groove, a material storage groove and a transfer feeding hopper, wherein the weighing assembly is convenient to prepare materials, a heating and stirring unit is started, premixing and drying can be continuously carried out in the premixing groove, the premixed materials are discharged into the material storage groove, and meanwhile, when the transfer feeding hopper continuously feeds the extruder, the materials in the material storage groove are continuously accumulated, the material storage groove is arranged, so that the materials can be cached for the transfer feeding hopper, a partition effect can be achieved when the formula of the materials is changed, a feeding pump can be immediately started after the residual materials are discharged by the transfer feeding hopper, new materials are sucked into the transfer feeding hopper from the material storage groove through a feeding pipe, the production formula and the products can be conveniently changed, the feeding is stable and continuous, the counterweight process is accurate, the feeding amount can be continuously adjusted according to the extrusion process, and the finished product quality of;

2. in the production process, a central controller conveniently controls color dust and other materials to be conveyed to a premixing hopper, the materials are proportioned through a weighing sensor, dried materials are discharged into a storage tank, the premixing hopper performs the next round of proportioning and premixing, continuous production is facilitated, the device formally operates, a transfer feeding hopper feeds materials to an extruder, the extrusion is started, a pipeline is in butt joint with a tractor for traction, the central controller adjusts the traction speed of the tractor according to the extrusion speed of the extruder and the feeding speed of the transfer feeding hopper, cooling, code spraying and cutting are performed subsequently, the whole pipe production process is controlled to be stable and uniform in production, the feeding is stable and continuous, the weight balancing process is accurate, the feeding amount can be continuously adjusted according to the extrusion process, and the quality of finished pipes is improved;

3. set up the convenient heating in hot oven of heating calandria, set up simultaneously and carry fan and hot-blast main, conveniently with hot oven hot-blast air leading-in to premixing groove along the hot-blast main, the waste heat in the convenient hot oven of utilization is dried the material in the fill in premixing, and it is in production tubular product in-process, and make full use of device waste heat is dried the material, the energy saving, and drying efficiency is high.

Drawings

FIG. 1 is a schematic diagram of the present invention.

Fig. 2 is a schematic cross-sectional structure of the present invention.

In the figure, 1, a frame; 2. an extruder; 3. a tractor; 4. a forming machine; 5. a cooling pool; 6. a hot oven; 7. a premixing hopper; 8. a weighing assembly; 9. a transfer feeding hopper; 10. a conveying unit; 11. a feed pipe; 12. a feed pump; 13. a material storage groove; 14. a heating and stirring unit; 15. a toner bin; 16. a delivery conduit; 17. a flow meter; 18. an electronic scale; 20. a discharge pipe; 21. a material blocking barrel; 22. a material receiving plate; 23. a stirring paddle; 24. a hot air pipe; 25. a bag-type dust collector; 26. an elastic band; 27. heating the calandria; 28. and a conveying fan.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, the PE feed pipe extrusion line disclosed by the invention is convenient for premixing raw materials in advance and for continuous production. Including frame 1, extruder 2, make-up machine 4, tractor 3, cooling tank 5, hot oven 6, frame 1 is provided with in 2 one sides of extruder and mixes hopper 7 in advance, be provided with on mixing hopper 7 and weigh subassembly 8, 2 tops of extruder are provided with transfer feed hopper 9, be provided with conveying unit 10 between transfer feed hopper 9 and mix hopper 7 in advance, including locating conveying pipe 11 and the delivery pump 12 on transfer feed hopper 9, 7 below outputs of mix hopper are provided with storage tank 13, are provided with heating stirring unit 14 in mix hopper 7. Therefore it sets up the premixing groove, deposit the silo 13, the transfer feed hopper 9, it conveniently prepares burden to weigh subassembly 8, open heating stirring unit 14, can be continuous in premixing inslot advance with dry, the material that finishes in advance is discharged and is deposited silo 13, simultaneously when transfer feed hopper 9 lasts for 2 feeds of extruder, the continuous accumulation of material in deposit the silo 13, set up deposit the silo 13, can be for transfer feed hopper 9 buffer memory material, also play the wall effect when changing the material prescription, the charge pump 12 is opened immediately after being convenient for transfer feed hopper 9 discharges the residual material, to newly distribute the material from deposit the silo 13 by conveying pipe 11 suction transfer feed hopper 9, conveniently change production formula and product.

Referring to fig. 1 and 2, in order to facilitate the control of the whole system for producing pipes, a plurality of toner bins 15 are arranged on a frame 1, different pigments are loaded in the toner bins 15, a conveying pipeline 16 is arranged between the toner bins 15 and a pre-mixing hopper 7, a flow meter 17 is arranged on the conveying pipeline 16, a central controller is further arranged, the flow meter 17, an extruder 2 and a tractor 3 are communicated with the central controller, the toner bins 15 and the conveying pipeline 16 are arranged for facilitating the batching, the flow meter 17 is arranged for facilitating the statistics and summary of toner quantity to the central controller, the central controller can control proportioning raw materials according to production requirements, the traction speed and the extrusion speed can be collected according to the flow meter 17, the extruder 2, the tractor 3 and the like for facilitating the control of the rice weight of pipe blanking, the continuous and stable production, meanwhile, a weighing assembly 8 comprises an electronic scale 18 arranged at the lower end of a material, still including locating weighing sensor (not drawn in the figure) on the premixing fill 7, weighing sensor and electronic scale 18 and central controller intercommunication deposit the electronic scale 18 that silo 13 lower extreme set up, conveniently weigh the material that finishes mixing, and convenient adjustment sets up weighing sensor on premixing fill 7, makes things convenient for each raw materials ratio of premixing fill 7 adjustment, makes things convenient for the batching.

Referring to fig. 2, 7 below output ends in advance hopper are provided with towards storage tank 13's discharging pipe 20, and discharging pipe 20 periphery is provided with fender feed cylinder 21, and storage tank 13 is provided with sectorial flitch 22 that connects in discharging pipe 20 below, sets up discharging pipe 20 and conveniently discharges into storage tank 13 with the material of accomplishing in advance, and it sets up and keeps off that feed cylinder 21 avoids the material to splash when the ejection of compact, sets up sectorial flitch 22 that connects simultaneously, and convenient further connecing the material, the reduction material strikes the departure.

Referring to fig. 1 and 2, in order to improve the heat energy utilization rate of the device, the heating and stirring unit 14 comprises a stirring paddle 23 arranged in the pre-mixing hopper 7, and further comprises a hot air pipe 24 arranged on the pre-mixing hopper 7, (for convenience, the hot air oven and the extruder are partially omitted in the figure), the hot air pipe 24 is introduced into the bottom end of the pre-mixing hopper 7, the hot air pipe 24 is of a composite layer structure and is composed of an external heat-insulating layer and an internal heat-resistant layer, a reflecting layer is plated on the inner wall of the internal heat-resistant layer, a bag-type dust collector 25 is arranged at the top end of the pre-mixing hopper 7, a plurality of elastic bands 26 are arranged between the pre-mixing hopper 7 and the hot air pipe 24 as well as between the feeding pipes 11 on the rotary feeding hopper, a heating calandria 27 is arranged at one side of the hot air oven 6, the interior of the hot air oven 6 is heated, the two ends of the heat exchange coil are communicated with the hot blast pipe 24. Consequently set up stirring rake 23 and hot-blast main 24, continuous hot air drying carries out in stirring process, the material is constantly dried at mixing process, it can be with dust separation in the premixing fill 7 to set up sack cleaner 25, it conveniently heats in hot oven 6 to set up heating calandria 27 simultaneously, set up conveying fan 28 and hot-blast main 24 simultaneously, conveniently with hot oven 6 hot-blast air leading-in to the premixing groove along hot-blast main 24, conveniently utilize waste heat in hot oven 6 to dry the interior material of premixing fill 7, heat exchange coil pipe has been distributed to heating portion periphery at extruder 2, make things convenient for hot-blast main 24 to carry out further heating through heat exchange coil pipe, promote hot-blast temperature, avoid hot-blast temperature decline in hot-blast main 24 simultaneously, hoisting device's heat utilization ratio, promote premixing fill 7 heating efficiency. Set up elastic bandage 26 and conveniently connect in advance hopper 7 and be connected with hot-blast main 24, conveying pipe 11, slow down the vibrations of hot-blast main 24, conveying pipe 11 when stirring in advance hopper 7, avoid hot-blast main 24, conveying pipe 11 and advance hopper 7 junction to take place the damage.

Referring to fig. 1 and 2, the production process of the PE water supply pipe using the above-mentioned apparatus includes the following steps;

s1, starting the extruder 2, the forming machine 4 and the hot oven 6 to preheat;

s2, inputting the raw material ratio, controlling the toner bin 15 and the premixing hopper 7 to finish feeding according to the ratio by the central controller, starting the stirring paddle 23 and the conveying fan 28, guiding hot air in the hot oven 6 in the preheating process into the premixing tank, and monitoring the feeding quality by the weighing sensor;

s3, the central controller opens the discharge pipe 20, the mixed material in the premixing hopper 7 is conveyed to the material storage tank 13, and the premixing hopper 7 carries out the next round of burdening and premixing;

s4, the central controller starts the feeding pump 12 on the transfer feeding hopper 9 to convey the mixture into the transfer feeding hopper 9;

s5, starting the forming machine 4, the tractor 3, the cooling pool 5 and the hot oven 6, feeding the materials into the extruder 2 through the transfer feeding hopper 9, starting extrusion, carrying out vacuum forming on the tubes in the forming machine 4, and dragging the tubes by the tractor 3;

s6, butting, namely butting and drawing the pipeline and the tractor 3, wherein a drawing roller can be arranged at the tractor 3 in advance, and then the drawing roller is inserted into the pipe and guides the pipe to enter the tractor 3;

s7, adjusting and correcting, wherein the central controller adjusts the traction speed of the tractor 3 according to the extrusion speed of the extruder 2 and the feeding speed of the transfer feeding hopper 9;

and S8, cooling, spraying codes, cutting, and stacking the pipes in sections.

Therefore, in the production process, the central controller conveniently controls color dust and other materials to be conveyed to the premixing hopper 7, the materials are proportioned through the weighing sensor, then the residual heat of the extruder 2, the forming machine 4 and the hot oven 6 during startup preheating can be fully utilized, hot air is guided into the premixing hopper 7, the materials are conveniently stirred and dried, the dried materials are discharged into the storage tank 13, the premixing hopper 7 is premixed for next round of proportioning, continuous production is facilitated, the device runs formally, the material is fed into the extruder 2 through the material transferring hopper 9, the extrusion is started, the pipeline is in butt joint with the tractor 3 for traction, the central controller adjusts the traction speed of the tractor 3 according to the extrusion speed of the extruder 2 and the material feeding speed of the material transferring hopper 9, cooling, code spraying and cutting are carried out, the whole pipe production process is controlled to be stable and stable at a constant speed, the material feeding is stable and continuous, the weight balancing process is accurate, and the feeding amount can be continuously adjusted according to the extrusion process, so that the quality of the finished product of the pipe is improved.

The implementation principle of the embodiment is as follows: it sets up the premixing groove, storage tank 13, transfer feed hopper 9, it conveniently prepares burden to weigh subassembly 8, open heating stirring unit 14, can be continuous mix in the premixing inslot in advance with dry, the material that finishes in advance discharges into storage tank 13, simultaneously when transfer feed hopper 9 lasts for 2 feeds of extruder, the continuous accumulation of material in storage tank 13, set up storage tank 13, can be for transfer feed hopper 9 buffer memory material, also play the wall effect when changing the material prescription, the charge pump 12 is opened immediately after being convenient for transfer feed hopper 9 discharges the residual material, to newly distribute the material from storage tank 13 by conveying pipe 11 suction transfer feed hopper 9, conveniently change production formula and product, its feed is stable to last, the counter weight process is accurate, and can be according to the constantly adjustment feed volume of extrusion process, promote the finished product quality of tubular product.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides a PE feed pipe extrusion line, includes frame (1), extruder (2), make-up machine (4), tractor (3), cooling bath (5), hot oven (6), its characterized in that: the extruder is characterized in that a premixing hopper (7) is arranged on one side of the extruder (2) of the frame (1), a weighing assembly (8) is arranged on the premixing hopper (7), a transfer feeding hopper (9) is arranged at the top end of the extruder (2), a conveying unit (10) is arranged between the transfer feeding hopper (9) and the premixing hopper (7) and comprises a conveying pipe (11) and a conveying pump (12) which are arranged on the transfer feeding hopper (9), a material storage groove (13) is arranged at the output end below the premixing hopper (7), and a heating and stirring unit (14) is arranged in the premixing hopper (7).

2. The PE water supply pipe extrusion line of claim 1, wherein: the output end below the premixing hopper (7) is provided with a discharge pipe (20) facing the material storage tank (13), the periphery of the discharge pipe (20) is provided with a material blocking barrel (21), and the material storage tank (13) is provided with a fan-shaped material receiving plate (22) below the discharge pipe (20).

3. The PE water supply pipe extrusion line of claim 2, wherein: the heating and stirring unit (14) comprises a stirring paddle (23) arranged in the premixing hopper (7) and a hot air pipe (24) arranged on the premixing hopper (7), and a bag-type dust collector (25) is arranged at the top end of the premixing hopper (7).

4. The PE water supply pipe extrusion line of claim 3, wherein: a plurality of elastic bands (26) are arranged between the premixing hopper (7) and the hot air pipe (24) and the feeding pipe (11).

5. The PE water supply pipe extrusion line of claim 4, wherein: one side of the hot oven (6) is provided with a heating calandria (27), one side of the hot oven (6) is provided with a conveying fan (28), and the hot air pipe (24) is communicated with the conveying fan (28).

6. The PE water supply pipe extrusion line of claim 5, wherein: and heat exchange coil pipes are distributed on the periphery of the heating part of the extruder (2), and two ends of each heat exchange coil pipe are communicated with the hot air pipe (24).

7. The PE water supply pipe extrusion line of claim 6, wherein: the machine is characterized in that a plurality of toner bins (15) are arranged on the machine frame (1), a conveying pipeline (16) is arranged between the toner bins (15) and the premixing hopper (7), a flow meter (17) is arranged on the conveying pipeline (16), a central controller is additionally arranged, and the flow meter (17), the extruder (2) and the tractor (3) are communicated with the central controller.

8. The PE water supply pipe extrusion line of claim 7, wherein: the weighing assembly (8) comprises an electronic scale (18) arranged at the lower end of the storage trough (13) and a weighing sensor arranged on the premixing hopper (7), and the weighing sensor and the electronic scale (18) are communicated with the central controller.

9. The production process of the PE water supply pipe extrusion production line, which is adopted by the method, is characterized in that: comprises the following steps;

s1, starting the extruder (2), the forming machine (4) and the hot oven (6) to preheat;

s2, inputting the raw material ratio, controlling the toner bin (15) and the premixing hopper (7) to finish feeding according to the ratio by the central controller, starting the stirring paddle (23) and the conveying fan (28), guiding hot air in the hot oven (6) in the preheating process into the premixing tank, and monitoring the feeding quality by the weighing sensor;

s3, the central controller opens the discharge pipe (20), the mixed material in the premixing hopper (7) is conveyed to the material storage tank (13), and meanwhile, the premixing hopper (7) carries out the next round of burdening and premixing;

s4, the central controller starts a feeding pump (12) on the transfer feeding hopper (9) to convey the mixture into the transfer feeding hopper (9);

s5, starting the forming machine (4), the tractor (3), the cooling pool (5) and the hot oven (6), feeding the materials into the extruder (2) through the transfer feeding hopper (9), and starting extrusion;

s6, butting, namely butting and drawing the pipeline and the tractor (3);

s7, adjusting and correcting, wherein the central controller adjusts the traction speed of the tractor (3) according to the extrusion speed of the extruder (2) and the feeding speed of the transfer feeding hopper (9);

and S8, cooling, spraying codes and cutting.