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PU circular foam high-pressure foaming unit

A high-pressure foaming and unit technology, applied in the field of foaming units, can solve the problems of uneven foam performance, uneven pore size, uneven mixing, etc., and achieve the effects of good physical properties, uniform and fine pore size, and good uniform effect.

Active Publication Date: 2016-11-09
HARBIN KAIRUIDA SPONGE MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems that the existing PU round foam foaming unit adopts the low-pressure foaming method, and there is uneven mixing, resulting in uneven foam performance, uneven pore size and flow marks, and provides a PU round foam high-pressure foaming method. unit

Method used

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  • PU circular foam high-pressure foaming unit

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specific Embodiment approach 1

[0019] Specific implementation mode one: combine Figure 1 ~ Figure 3 Describe this embodiment, this embodiment comprises mixing head 1, conical shaft 2, circular shaft 4, chain plate drive cylinder 5, cutting mechanism 6, bubble-entrapping mechanism 7, cylindrical plastic film 8, the first raw material tank 9, The second raw material tank 10, the third raw material tank 11, the fourth raw material tank 12, the fifth raw material tank 13, the sixth raw material tank 14, the seventh raw material tank 15, two low-pressure feed pipes 16, two low-pressure pumps 17, Three connecting rods 3, five high-pressure pumps 18, five high-pressure feed pipes 19, seven flowmeters 20 and seven pressure gauges 21,

[0020] The mixing head 1 includes a housing 1-1, a stirring shaft 1-2, a base 1-3, a driven pulley 1-4, a driving pulley 1-5, a stirring motor 1-6, a balance grid 1-7 and several Blades 1-8,

[0021] The stirring shaft 1-2 is set in the housing 1-1, the lower end of the stirring s...

specific Embodiment approach 2

[0026] Specific implementation mode two: combination figure 2 The present embodiment will be described. The height of the pressure buffer zone W in the present embodiment is 150 mm to 300 mm. The pressure buffer W increases the space of the cavity, and the longer cavity makes the raw materials mix continuously while reducing the multi-directionality of the pressure and flow rate brought by the vortex speed. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0027] Specific implementation mode three: combination figure 2 The present embodiment will be described. The height of the pressure buffer zone W in the present embodiment is 250 mm. The pressure buffer W increases the space of the cavity, and the longer cavity makes the raw materials mix continuously while reducing the multi-directionality of the pressure and flow rate brought by the vortex speed. Other components and connections are the same as those in the second embodiment.

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Abstract

The invention discloses a PU circular foam high-pressure foaming unit, and aims to solve the problems of nonuniform aperture and generation of flow marks caused by a low-pressure foaming mode in a traditional PU circular foam foaming unit. Multiple blades are mounted on a stirring shaft, and are intermittently arranged in a double-end spiral manner; spiral angles of the blades are 5-15 degrees; a pressure buffer area is formed between a balance mesh and the upper end surface of the stirring shaft; a mixing head, a conical channel, a connecting rod, a circular channel, a chain plate transmission cylinder, a cutting mechanism and a foam clamping mechanism are arranged in sequence from bottom to top; a cylindrical plastic film is laid along the inner walls of the conical channel, the circular channel and the chain plate transmission cylinder; a first raw material tank and a seventh raw material tank are respectively connected with a low-pressure feed port through low-pressure feed pipes; and a second raw material tank, a third raw material tank, a fourth raw material tank, a fifth raw material tank and a sixth raw material tank are respectively connected with a high-pressure feed port through high-pressure feed pipes. The PU circular foam high-pressure foaming unit is used for producing PU circular foams.

Description

technical field [0001] The invention relates to a foaming unit, in particular to a PU round foam high-pressure foaming unit. Background technique [0002] The PU (polyurethane) bulk foam continuous production line includes flat foam production line and round foam production line. As we all know, the flat foam production line produces products with fine and uniform pore size, stable performance, and high-quality products. Therefore, the flat foam production line is being used more and more more. However, the round bubble also has many advantages: the round bubble coil is relatively long, has no joints, the width of the coil can be changed flexibly, the equipment occupies a small area, uses less manpower, less waste of raw materials, and less investment. [0003] The existing PU (polyurethane) round foaming machine adopts the low-pressure foaming method (that is, the low-pressure gas injection method). 2 Enter the mixing head for mixing and foaming. Since the pressure of eac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C44/34B29K75/00
CPCB29C44/34B29C44/3442B29K2075/00
Inventor 李业光唐雪飞贾冠群王爽
Owner HARBIN KAIRUIDA SPONGE MFG
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