Outer sleeve seal head

A technology of sealing head and outer casing, which is applied in the direction of pipe/pipe joint/fitting, pipe protection, pipe protection through heat insulation, etc., can solve the problem of wasting protective pipe, etc., and achieve the effect of high work efficiency and simple structure

Inactive Publication Date: 2015-09-23
天津中浩供热工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the molding process, the front end of the outer sleeve needs to be blocked to inflate the inside. In the traditional technology, the cylinder is directly used for clamping, and the clamped part will be cut off in this way, which is easy to waste more protective tubes.

Method used

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  • Outer sleeve seal head

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Embodiment Construction

[0010] The specific implementation manner of the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments. Such as figure 1 As shown, a sealing head of an outer sleeve includes an upper baffle 1 and a lower baffle 2, the upper and lower baffles are connected by a connecting rod 3, and the rear sides of the upper and lower baffles are respectively affixed with hard A hard foam layer 4, the diameter of the hard foam layer is larger than the diameter of the upper and lower baffles, and the hard foam layer can be tightly attached to the inner wall of the outer casing, thereby achieving the purpose of blocking. In order to facilitate pulling and sealing, a pull rod 5 is provided in the middle of the upper and lower baffles, and a rope fixing hole 6 is provided at the front end of the pull rod. Pull the whole air seal through the rope through the rope fixing hole, so that the air seal can move in the outer casing. ...

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Abstract

The invention belongs to the field of thermal insulation pipe manufacturing machines, and especially relates to an outer sleeve seal head, comprising an upper baffle and a lower baffle. The upper baffle and the lower baffle are connected through a connecting rod. The rear sides of the upper baffle and the lower baffle are respectively adhered to a rigid foam layer. The diameter of the rigid foam layer is larger than the diameter of the upper baffle and the lower baffle. The middle parts of the upper baffle and the lower baffle are provided with pull rods. The front end of the pull rod is provided with a rope fixing hole. The seal head is simple in structure. Through two connected baffles and adhering a rigid foam layer on the baffle, since the diameter of the rigid foam layer is larger than the diameter of the baffle, when the baffles moves towards a protective pipe which is being molded, the baffle can tightly abut against the inner wall of the protective pipe. When a part of the protective pipe is formed, the seal air block moves forward for a section of distance. The middle part of the protective pipe is not needed pressing, the two baffles and the rigid foam can block. Cutting the pipe again is not needed. The outer sleeve seal head saves materials and time, and is high in working efficiency.

Description

technical field [0001] The invention belongs to the field of insulation pipe manufacturing machinery, in particular to an outer casing sealing head. Background technique [0002] Prefabricated direct-buried thermal insulation pipes are mainly used for district heating external network pipelines. With the promotion of central heating in the country, its consumption is increasing and its application range is becoming wider and wider. Prefabricated directly buried thermal insulation pipeline has many advantages such as waterproof, good anti-corrosion performance, saving investment, shortening construction period, and low maintenance cost. [0003] The prefabricated direct-buried pipes currently used are composed of steel pipes, brackets, insulation layers, and outer casings. According to the design and customer requirements, spiral welded seamless pipes and straight seam pipes are generally used. The polyethylene outer sleeve is made of high-density polyethylene material, whic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L59/02
CPCF16L59/028
Inventor 张胜杰
Owner 天津中浩供热工程有限公司
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