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Coaxial double-channel air distribution structure for steel-plastic composite pipe spraying nozzle

A steel-plastic composite pipe and dual-channel technology, applied in the field of pipe processing, can solve the problems of excessive spraying, waste of spraying materials, exposed steel pipes, etc., and achieve the effect of increasing uniformity and overcoming local deposition

Active Publication Date: 2021-11-23
重庆忠泽科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the dilemma in the prior art that when the inner lining of the steel-plastic composite pipe is processed by spraying, the steel pipe is exposed if the spray is too thin, and the spraying material is wasted if the spray is too thick, this application provides a spraying nozzle for the steel-plastic composite pipe The coaxial double-channel air distribution structure is used to realize the diffuse spraying of the nozzle, which can evenly realize 360°rotary spraying in the pipe wall, and the free setting of the thickness of the spray lining can be realized by adjusting the axial movement speed of the diffuse nozzle, so that It can meet the spraying requirements of different pipe diameters and different lining thicknesses

Method used

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  • Coaxial double-channel air distribution structure for steel-plastic composite pipe spraying nozzle
  • Coaxial double-channel air distribution structure for steel-plastic composite pipe spraying nozzle
  • Coaxial double-channel air distribution structure for steel-plastic composite pipe spraying nozzle

Examples

Experimental program
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Effect test

Embodiment 1

[0051] Attached to the manual Figure 1-Figure 11 The shown coaxial dual-channel gas distribution structure for spraying nozzles for steel-plastic composite pipes includes an outer casing 2 and a centrifugal nozzle 7 rotatably mounted on the outer casing 2, and the outer casing 2 includes a relatively installed The first end cover 3 and the second end cover 4, the centrifugal spray head 7 is rotatably arranged between the first end cover 3 and the second end cover 4, and also includes a first channel for the circulation of gas and a first channel for the circulation of the spraying material. Two passages; an intake pipe 1 coaxially arranged on the outer casing 2 , the end of the intake pipe 1 is fixedly connected with the first end cover 3 , and the intake pipe 1 is connected to the centrifugal The spray head 7 is connected in rotation, a plurality of branch pipes 13 are arranged on the outer side wall of the air inlet pipe 1, one end of any branch pipe 13 is communicated with...

Embodiment 2

[0054] As a preferred embodiment of the present application, this embodiment further improves the structure on the basis of Embodiment 1. like Figure 8-Figure 11 As shown, the first channel also includes a first straight pipe 14 and a third straight pipe 20 coaxially and fixedly connected to the end face of the second end cover 4 away from the centrifugal nozzle 7. The first straight pipe The tube 14 and the free end face of the third straight tube 20 are hermetically connected to form a second annular cavity 19 , and the second end cover 4 is provided with a plurality of first annular chambers for high-pressure gas to flow from the second annular cavity 19 to the centrifugal nozzle 7 . Through hole 10 , the branch pipe 13 communicates with the second annular cavity 19 . A second straight pipe 15 is fixedly connected to one end surface of the centrifugal nozzle 7 close to the second end cover 4 , and a first sealed bearing is installed between the second straight pipe 15 and...

Embodiment 3

[0058] Attached to the manual figure 1 -Attached Figure 7The shown dispersion nozzle including the coaxial double-channel gas distribution structure described in any one of Embodiments 1-2 includes an outer casing 2 for installation and fixing, and also includes a centrifugal fan rotatably mounted on the outer casing 2. Nozzle 7, the centrifugal nozzle 7 is provided with a plurality of centrifugal channels 12 in an arc shape in the radial direction. The other end of the centrifugal hole 12 is communicated with the feeding pipe 6; the outer casing 2 is also provided with an air inlet pipe 1, and the high-pressure gas in the air inlet pipe 1 pushes the impeller 9 arranged on the end face of the centrifugal nozzle 7 to make the centrifugal The nozzle 7 rotates at a high speed.

[0059] Structural coordination and working principle:

[0060] The outer casing 2 is a supporting structure for fixing and installing the entire dispersion nozzle, and is used for supporting the fixed...

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Abstract

The invention discloses a coaxial double-channel air distribution structure for a steel-plastic composite pipe spraying nozzle. The coaxial double-channel air distribution structure comprises an outer shell and a centrifugal nozzle rotationally installed on the outer shell; the outer shell comprises a first end cover and a second end cover which are oppositely installed; the centrifugal nozzle is rotationally arranged between the first end cover and the second end cover; and the coaxial double-channel air distribution structure further comprises a first channel for air circulation and a second channel for spraying material circulation. By the adoption of the coaxial double-channel air distribution structure, a nozzle rotating structure, an air distribution structure and a material conveying structure can be optimized, airflow drives the centrifugal nozzle to conduct centrifugal spraying, the centrifugal nozzle rotating at a high speed can achieve 360-degree spraying in a pipeline, and a sprayed lining can be more uniform.

Description

technical field [0001] The invention relates to the technical field of pipe processing, in particular to the field of lining spraying and processing devices for steel-plastic composite pipes, in particular to a coaxial dual-channel gas distribution structure for spraying nozzles of steel-plastic composite pipes. Background technique [0002] Composite steel pipe, also known as steel-plastic composite pipe, usually takes seamless steel pipe and welded steel pipe as the base pipe, and the inner wall is coated with high-adhesion, anti-corrosion, food-grade hygienic polyethylene powder coating or epoxy resin coating. The galvanized and plastic-coated composite steel pipe for water supply made by pre-treatment, preheating, internal coating, leveling and post-treatment processes is an upgraded product of traditional galvanized pipes. connection, flange connection. [0003] The existing steel-plastic composite pipe lining technology can be roughly divided into two categories, name...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05B3/04B05B3/08B05B12/08B05B12/18B05B1/14
CPCB05B3/0486B05B3/082B05B12/082B05B12/18B05B1/14Y02P70/10
Inventor 易波
Owner 重庆忠泽科技有限公司