Production process of special large-pipe-diameter PE branch pipe for low-pressure drip irrigation

A production process and large-diameter technology, which is applied in the production process of large-diameter PE branch pipes for low-pressure drip irrigation, can solve the problems of large demand for equipment and materials, large investment in micro-irrigation project construction, and complex composition of drip irrigation systems. Energy consumption of equipment, improvement of processing rheology, and effects of avoiding scratch damage

Inactive Publication Date: 2017-05-31
GANSU DAYU WATER SAVING +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complex composition of the drip irrigation system, strict water quality requirements, high pipe network density, and large demand for equipment and materials; at the same time, in order to improve the irrigation uniformity of the system and adaptability to the terrain, the system requires precision and accuracy of equipment and materials. The strength requirements are relatively high, so the initial construction investment of micro-irrigation projects is large, and it is considered an expensive irrigation technology from the beginning

Method used

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  • Production process of special large-pipe-diameter PE branch pipe for low-pressure drip irrigation

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Embodiment 1 A production process for a special large-diameter PE branch pipe for low-pressure drip irrigation, comprising the following steps:

[0023] ⑴Preparation of polyethylene mixture:

[0024] In parts by mass (kg), it consists of 60 parts of high-density polyethylene, 25 parts of low-density polyethylene, 15 parts of linear low-density polyethylene, 0.3 parts of PPA masterbatch, 1.5 parts of silicone masterbatch, and 0.5 part of double-antibody masterbatch 3 parts of color masterbatch and 3 parts of color masterbatch are mixed to form a polyethylene compound.

[0025] (2) Add the polyethylene compound into the hopper 3 of the extruder, and start the transmission device 1.

[0026] (3) After the polyethylene compound is melted and plasticized by the screw barrel 2 of the extruder, it enters the mandrel in the die 5 from the neck transition body 4, and is extruded into a tube blank after being injected and exhausted by compressed air.

[0027] Among them: the di...

Embodiment 2

[0029] Embodiment 2 A production process for a special large-diameter PE branch pipe for low-pressure drip irrigation, comprising the following steps:

[0030] ⑴Preparation of polyethylene mixture:

[0031] In parts by mass (kg), it consists of 60 parts of high-density polyethylene, 25 parts of low-density polyethylene, 15 parts of linear low-density polyethylene, 0.8 parts of PPA masterbatch, 2.5 parts of silicone masterbatch, and 1 part of double-antibody masterbatch 5 parts of color masterbatch and 5 parts of color masterbatch are mixed to form a polyethylene compound.

[0032] (2) Add the polyethylene compound into the hopper 3 of the extruder, and start the transmission device 1.

[0033] (3) After the polyethylene compound is melted and plasticized by the screw barrel 2 of the extruder, it enters the mandrel in the die 5 from the neck transition body 4, and is extruded into a tube blank after being injected and exhausted by compressed air.

[0034] Among them: the die ...

Embodiment 3

[0036] Embodiment 3 A production process for a special large-diameter PE branch pipe for low-pressure drip irrigation, comprising the following steps:

[0037] ⑴Preparation of polyethylene mixture:

[0038] In parts by mass (kg), it consists of 60 parts of high-density polyethylene, 25 parts of low-density polyethylene, 15 parts of linear low-density polyethylene, 0.5 parts of PPA masterbatch, 2.0 parts of silicone masterbatch, and 0.8 parts of double-antibody masterbatch 4 parts of color masterbatch and 4 parts of color masterbatch are mixed to form a polyethylene compound.

[0039] (2) Add the polyethylene compound into the hopper 3 of the extruder, and start the transmission device 1.

[0040] (3) After the polyethylene compound is melted and plasticized by the screw barrel 2 of the extruder, it enters the mandrel in the die 5 from the neck transition body 4, and is extruded into a tube blank after being injected and exhausted by compressed air.

[0041] Among them: the d...

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Abstract

The invention relates to a production process of a special large-pipe-diameter PE branch pipe for low-pressure drip irrigation. The process comprises the following steps: (1) preparing a polyethylene mixture; (2) adding the polyethylene mixture into a hopper of an extruding machine, and starting a transmission device; (3) melting and plastifying the polyethylene mixture through a screw cylinder of the extruding machine, enabling the polyethylene mixture to enter a mandril in a head die through a machine neck transitioning body, and carrying out gas feeding and exhausting through compressed air and extruding forming to obtain a pipe blank; and (4) enabling the inner diameter of the pipe blank to be increased under the action of the compressed air, carrying out stretching along the axial direction of the pipe blank under the action of a pulling wheel and a pulling device, so as to enable a PE macromolecular chain and a chain section inside the pipe blank to form biaxial stretching orientation along the axial direction and the circumferential direction of the pipe blank, enable the pipe blank to penetrate through three layers of perpendicularly stacked cooling air rings in sequence and enter a secondary cooling device after an infrared diameter sizing device controls the pipe diameter, and finally enable the pulling device to pull the pipe blank to form the special large-pipe-diameter PE branch pipe for low-pressure drip irrigation, and putting the product into a winding device. The production process is low in cost and easy to implement, and the obtained product is excellent in product performance.

Description

technical field [0001] The invention relates to the technical field of low-pressure drip irrigation water-saving irrigation engineering, in particular to a production process for a special large-diameter PE branch pipe for low-pressure drip irrigation. Background technique [0002] Drip irrigation is an advanced water-saving irrigation technology. Through special equipment and water distribution system, irrigation water is directly delivered to the roots of crops, realizing controllable local irrigation and precise irrigation. Drip irrigation technology is valued by countries all over the world because of its high water-saving efficiency and strong adaptability to terrain, soil, climate and crops. However, due to the complex composition of the drip irrigation system, the stricter requirements for water quality, the high density of the pipe network, and the large demand for equipment and materials; at the same time, in order to improve the irrigation uniformity of the system ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08L67/02C08L83/04
CPCC08L23/06C08L2203/18C08L2205/025C08L2205/035C08L2207/062C08L2207/066C08L23/0815C08L67/02C08L83/04
Inventor 王栋王飞谢永生徐希彬申世周
Owner GANSU DAYU WATER SAVING
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