CN203317753U

CN203317753U - Universal type membrane melting equipment for polyurethane flexible foams

Info

Publication number: CN203317753U
Application number: CN2013203347560U
Authority: CN
Inventors: 贾洪
Original assignee: HARBIN HEZHONG POLYURETHANE PRODUCT Co Ltd
Current assignee: HARBIN HEZHONG POLYURETHANE PRODUCT Co Ltd
Priority date: 2013-06-10
Filing date: 2013-06-10
Publication date: 2013-12-04
Anticipated expiration: 2023-06-10

Abstract

The utility model relates to universal type membrane melting equipment for polyurethane flexible foams. In the prior art, a single-door operation mode is adopted, so that the work efficiency is low, and a used metal pressure container has no burst pressure monitoring points, thus being not beneficial to safe operation and best process design. An existing container generally is small in volume, cannot satisfy the characteristic requirements, and affects the efficiency. The universal type membrane melting equipment comprises double doors (1) which are connected with a container (2), wherein the container comprises a U-shaped steel plate (9) and a side wall steel plate (10), the U-shaped steel plate is connected with the side wall steel plate through a welded joint (7), an air injection port (4) and an extract port (3) are sequentially formed in the U-shaped steel plate at the upper part of the container, the side wall steel plate is provided with monitoring points (8), and an isolation device (5) is arranged between the inner wall of the container and a foam block (6). The universal type membrane melting equipment is used for processing reticular foams.

Description

The melt film equipment of universal polyurethane flexible foam

Technical field:

The utility model relates to a kind of melt film equipment of universal polyurethane flexible foam.

Background technology:

The technology of existing two kinds of processing reticulated polymer foams: a kind of is that pending foam block is packed into one and had in the airtight polybag of toughness, then pack in a withstand voltage canister, the airtight polybag that foam block is housed is vacuumized to processing, after container closure, hydrogen and oxygen are passed in the polybag vacuumized, then igniting blasting, at explosion moment generation HTHP, remaining wall film scorification in foams is fallen, only stayed skeleton structure, form a kind of new-type foam----reticulated polymer foam.

Another kind method is by the pending foam block withstand voltage canister of directly packing into, after closed container, directly first vacuumizes, then fills hydrogen and oxygen, and then igniting blasting, make reticulated polymer foam.

The shortcoming of a kind of front method is: if there is airtight problem in the first polybag, can affect largely operating efficiency and product quality, the second, deformation can occur in polybag and foam block in the process vacuumized, this can produce very large resistance, thereby the effect that impact vacuumizes, cause the mist skewness, the explosion inequality, thereby cause the partial wall film residual, affect the melt film effect.

The shortcoming of a kind of rear method is: when explosion, inhomogeneous due to the interaction of power and foam block surface blasting flame, often can cause foam deformation and surface to burn, and reduced yield rate, increased accident potential.

Above two kinds of methods are the single open-door operation, inefficiency, and, on metal pressure vessel used, without the burst pressure monitoring point, be unfavorable for safety operation and carry out the optimised process design.The general volume of container at present used is less, can't meet characteristic requirements, has also affected efficiency.Also having is exactly the manufacture view from the rectangle pressure vessel, existing preparation method is all to be welded with steel plate, and welding position is all at the position, right angle of rectangular vessel, and this technique drawback is a lot: the one, and position, container right angle is stressed large, if any weld defect, potential safety hazard increases.The 2nd, the welding of position, right angle, rectangular vessel torsional deformation when welding is larger, for reducing intermittently welding of distortion, easily like this cause weld defect and duration to lengthen, and container is once distortion, be difficult for recovering, affect the installation of numerous auxiliaries on the container and strengthened the welding of gusset.

The utility model content:

The purpose of this utility model is to provide a kind of melt film equipment of universal polyurethane flexible foam.

Above-mentioned purpose realizes by following technical scheme:

A kind of melt film equipment of universal polyurethane flexible foam, its composition comprises: two-door, described two-doorly be connected with container, described container comprises U-shaped steel plate, sidewall steel plate, described U-shaped steel plate is connected by soldered with described sidewall steel plate, the U-shaped steel plate on described container top is disposed with gas injection port, bleeding point, is provided with one group of monitoring point on described sidewall steel plate, between described container inner wall and foam block, is provided with spacer assembly.

Beneficial effect:

1. two door design of the present utility model is compared with simple gate, first, can guarantee after foam block carries out the melt film processing, carry out getting into and releasing of new and old foam block simultaneously, and quick and precisely locate and close the door, carry out operation next time, improved production efficiency, the second, be very easy to carry out the internal check of container and clean.The 3rd, in the process of advancing and going out of foam block, can not cause damage and be out of shape foam block, the 4th, container is that two is opened wide, four thick welding steels up and down two be U-shaped structure, be therefore butt welding during four steel plates welding.Weld seam is on side plane, whole container only has four weld seams, so not only easily welding, and speed is fast, the distortion that is difficult for during welding being distorted, success rate is high, weld seam is not or not the place, right angle of stress maximum, security is guaranteed, and also is easy to carry out test of flaw detection, and above advantage is that melt film equipment was unexistent in the past.

Spacer assembly of the present utility model is present between foam block and container inner wall, its effect: at first, when the extract system of melt film equipment starts to vacuumize, spacer assembly can make foam block integral body all under same vacuum state, the vacuum that has guaranteed each position of foam block is uniformly distributed, when gas injection system filling mist, just can make this gas uniform be distributed to each corner of foam block like this; Secondly, after inflation finishes, want the filling inert gas between foam block and container inner wall.At this moment spacer assembly can guarantee that again inert gas only is present between foams and container inner wall, and can not cause a bit infiltration to foams.According to the above effect of spacer assembly, the benefit that can sum up it is as follows: (1) guarantees being dispersed in foams of mist maximum, so just can accomplish force of explosion greatly and evenly, and the scorification of foam wall film obtains fully, and effect is satisfactory; (2) due to the existence of inert gas, make the blasting impact dynamic balance discharge, extinguish in time surperficial calcination, make foam block not produce any deformation and calcination, fundamentally guaranteed the melt film qualification rate.

Melt film equipment of the present utility model also has safety monitoring assembly, this covering device by container and two-door on a plurality of monitoring points of arranging of science, monitor moment explosion stress data and the time of relevant range in time, this provides 2 very important assurances for the utility model carries out practical application smoothly: the firstth, and for safe design and the application of container provides the checking means, the secondth, for the design of melt film technique with guarantee the data that the melt film effect provides the foundation.

The utility model can be produced the reticulated polymer foam goods of required in the market most various sizes and shape, and its inside dimension is designed to 2300mm*2300mm*1100mm, is maximum at present indoor design.Only have all methods for designing that adopt the utility model above, guarantee large scale foam block like this can be become uniform reticulated polymer foam by networking.And can carry out effective Design and manufacture and the safety assurance of equipment.Large-sized design has simultaneously also improved output, has reduced consumption.

during use, open the side in two-door, foam block is packed in container, after closing the door, utilize extract system by bleeding point, container to be vacuumized, after vacuumizing end, utilize gas injection system to pass through gas injection port hydrogen injecting oxygen, described oxyhydrogen disperse is in whole container, after gas injection finishes, indifferent gas reinjects, because described spacer assembly has the selection permeability, make described inert gas can not pass through described spacer assembly, then to the explosion of being lighted a fire of described foam block, after cooling, open the door of both sides---described two-door, take out foam block from a side door, push next piece foam block from another side door, shut described two-door, then repeat gas injection, the igniting explosion, push off foam block, thereby carry out cyclic process.

The accompanying drawing explanation:

Accompanying drawing 1 is structural representation of the present utility model.In figure, 1 is two-door, and 2 is container, and 3 is bleeding point, and 4 is gas injection port, and 5 is spacer assembly, and 6 is foam block, and 7 is soldered, and 8 is monitoring point, and 9 is U-shaped steel plate, and 10 is sidewall steel plate.

The specific embodiment:

Embodiment 1:

Claims

1. the melt film equipment of a universal polyurethane flexible foam, its composition comprises: two-door, it is characterized in that: described two-doorly be connected with container, described container comprises U-shaped steel plate, sidewall steel plate, described U-shaped steel plate is connected by soldered with described sidewall steel plate, the U-shaped steel plate on described container top is disposed with gas injection port, bleeding point, is provided with one group of monitoring point on described sidewall steel plate, between described container inner wall and foam block, has spacer assembly.