阅读说明：本技术 一种柔性不燃复合型保温风管的制备工艺 (Preparation process of flexible non-combustible composite heat-preservation air pipe ) 是由 张君 曹鑫 吉娇 殷爱军 谢存剑 于 2021-09-14 设计创作，主要内容包括：本发明公开了一种柔性不燃复合型保温风管的制备工艺,包括以下步骤：S1,筛选芯材：面层选择具有防火性能的玻纤布,选择无机纤维柔性材料作为芯材,以毡和毯的形式与面层进行复合；S2,缝合：将无机纤维芯材均匀平铺在两片面层之间,对复合层进行缝合；S3,直管制作：管端口采用活动方式进行拼接；S4,弯管制作：弯头采用直角方式,即两根直管各一端经过裁切后进行拼接,内衬导流布和支撑环；S5,多通结构制作：选择两片复合材料进行对接缝合；本发明本发明通过芯材的选择,使得风管整体达到不燃A级,可以使用在防火等级高的场所,保证防火的同时具有优异的保温性能,柔性风管形式具有方便安装、清洗、转移的优势。(The invention discloses a preparation process of a flexible non-combustible composite heat-preservation air pipe, which comprises the following steps: s1, screening core materials: the surface layer is made of glass fiber cloth with fireproof performance, and inorganic fiber flexible materials are selected as core materials and compounded with the surface layer in a felt and blanket mode; s2, sewing: uniformly spreading an inorganic fiber core material between two surface layers, and sewing the composite layer; s3, straight pipe preparation: splicing the pipe ports in a movable mode; s4, manufacturing a bent pipe: the elbow adopts a right-angle mode, namely, one end of each of two straight pipes is spliced after being cut, and the inside of the elbow is lined with a flow guide cloth and a support ring; s5, manufacturing a multi-pass structure: selecting two pieces of composite materials for butt joint and sewing; according to the invention, by selecting the core material, the whole air duct can reach the non-combustible grade A, the air duct can be used in places with high fireproof grade, excellent heat insulation performance is realized while the fire is guaranteed, and the flexible air duct has the advantages of convenience in installation, cleaning and transfer.)

1. A preparation process of a flexible non-combustible composite heat-preservation air pipe is characterized by comprising the following steps: the method comprises the following steps:

s1, screening core materials: the surface layer is made of glass fiber cloth with fireproof performance, and inorganic fiber flexible materials are selected as core materials and compounded with the surface layer in a felt and blanket mode;

s2, sewing: the inorganic fiber core material is evenly paved between the two surface layers, and the composite layer can be sewn by special sewing equipment and wire materials, or can be compositely fixed by rivets;

s3, straight pipe preparation: the twelve points of the straight pipe are sewed, a support ring is installed in the pipe at a proper distance, and the pipe ports are spliced in a movable mode;

s4, manufacturing a bent pipe: the elbow adopts a right-angle mode, namely, one end of each of two straight pipes is spliced after being cut, and the inside of the elbow is lined with a flow guide cloth and a support ring;

s5, manufacturing a multi-pass structure: selecting two pieces of composite materials for butt joint and sewing;

s6, splicing: and (4) according to a design drawing, performing combined connection on the straight pipe, the bent pipe and the multi-way structure, and assembling the required configuration.

2. The preparation process of the flexible non-combustible composite heat-preservation air pipe according to claim 1, characterized by comprising the following steps of: in the step S1, the core material is a grade a non-combustible heat insulation material, and the core material is required to meet the material characteristics of non-combustible, soft material and excellent heat insulation performance.

3. The preparation process of the flexible non-combustible composite heat-preservation air pipe according to claim 1, characterized by comprising the following steps of: in the step S2, the wire has the function of fire prevention and flame retardation, and the rivet is made of metal or non-combustible material.

4. The preparation process of the flexible non-combustible composite heat-preservation air pipe according to claim 1, characterized by comprising the following steps of: in the step S2, the inorganic fiber core material is fixedly embedded between the two surface layers, and the two surface layers are made of a material having wear resistance, fire resistance and water resistance.

5. The preparation process of the flexible non-combustible composite heat-preservation air pipe according to claim 1, characterized by comprising the following steps of: in the step S3, the tube ports of two adjacent straight tubes are spliced by a zipper.

6. The preparation process of the flexible non-combustible composite heat-preservation air pipe according to claim 1, characterized by comprising the following steps of: in step S4, the cutting angle of the end portions of the two straight pipes is 45 ° so that the included angle between the two straight pipes is 90 °, and the flow guide cloth in the bent pipe is arc-shaped and is sleeved with the inside of the bent pipe.

7. The preparation process of the flexible non-combustible composite heat-preservation air pipe according to claim 1, characterized by comprising the following steps of: in the step S5, the multi-pass structure may be a cross, that is, two cross-shaped composite materials are flatly placed on the multi-pass structure in a cross-like manner, and the multi-pass structure is stitched and spliced with each side of a rectangular composite material with a certain width, and a support ring is installed at each port.

8. The preparation process of the flexible non-combustible composite heat-preservation air pipe according to claim 1, characterized by comprising the following steps of: in the step S5, the multi-pass structure may be a tee, and the tee is plugged at one end of the tee, and the multi-pass may be connected in multiple sections.

Technical Field

The invention relates to the technical field of air duct preparation, in particular to a preparation process of a flexible non-combustible composite heat-preservation air duct.

Background

The air duct is a duct system for conveying and distributing air. There are two kinds of composite air pipe and inorganic air pipe. The composite air ducts can be classified according to cross-sectional shape and material. The stainless steel air duct is manufactured by coating sealant at seams such as seaming seam, rivet seam, flange flanging four corners, etc. Before the sealant is coated, dust and oil stains on the surface are removed. According to the cross section shape, the air pipe can be divided into a circular air pipe, a rectangular air pipe, an oblate air pipe and the like, wherein the circular air pipe has the smallest resistance but the largest height and size, and is complex to manufacture. So the application is mainly based on a rectangular air pipe. The air pipe can be divided into a metal air pipe, a composite air pipe and a polymer air pipe according to the material.

The air duct is generally divided into a composite air duct and a flexible air duct, wherein the air duct is mainly formed by compounding and processing a non-metal material and a heat-insulating material, the structure is complex and heavy, the manufacturing cost is high, the flexible air duct is mainly formed by adding a fire-resistant glass fiber cloth and a rubber-plastic heat-insulating material, the rubber-plastic material is an organic material, the highest fire-proof grade is B1 grade, and the whole air duct cannot meet the non-combustible requirement. In view of the above defects, it is actually necessary to design a process for preparing a flexible non-combustible composite heat preservation air duct.

Disclosure of Invention

The invention aims to provide a preparation process of a flexible non-combustible composite type heat-preservation air pipe, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a preparation process of a flexible non-combustible composite heat-preservation air pipe comprises the following steps:

s1, screening core materials: the surface layer is made of glass fiber cloth with fireproof performance, and inorganic fiber flexible materials are selected as core materials and compounded with the surface layer in a felt and blanket mode;

s2, sewing: the inorganic fiber core material is evenly paved between the two surface layers, the composite layer can be sewn by special sewing equipment and wire materials, and can also be compositely fixed by rivets which are metal or non-combustible materials;

s3, straight pipe preparation: the twelve points of the straight pipe are sewed, a support ring is installed in the pipe at a proper distance, and the pipe ports are spliced in a movable mode;

s4, manufacturing a bent pipe: the elbow adopts a right-angle mode, namely, one end of each of two straight pipes is spliced after being cut, and the inside of the elbow is lined with a flow guide cloth and a support ring;

s5, manufacturing a multi-pass structure: selecting two pieces of composite materials for butt joint and sewing;

s6, splicing: and (4) according to a design drawing, performing combined connection on the straight pipe, the bent pipe and the multi-way structure, and assembling the required configuration.

Preferably, in step S1, the core material is a class a non-combustible heat insulation material, and the core material is required to meet the material characteristics of non-combustible, soft material and excellent heat insulation performance.

Preferably, in step S2, the wire has a function of fire-proof and flame-retardant.

Preferably, in the step S2, the inorganic fiber core material is fixedly embedded between two surface layers, and the two surface layers are made of a material having wear resistance, fire resistance and water resistance.

Preferably, in step S3, the tube ports of two adjacent straight tubes are spliced by a zipper.

Preferably, in step S4, the cutting angle of the end portions of the two straight pipes is 45 °, so that the included angle between the two straight pipes is 90 °, and the flow guide cloth in the bent pipe is arc-shaped and is sleeved with the inside of the bent pipe.

Preferably, in step S5, the multi-pass structure may be a cross-pass structure, and a cross-like manner is adopted, that is, two pieces of cross-shaped composite material are flatly placed on the multi-pass structure, and a rectangular composite material with a certain width is sewn and spliced with each side of the multi-pass structure, and a support ring is installed at each port.

Preferably, in step S5, the multi-pass structure may be a tee, and the tee is plugged at one end of the tee, and the multi-pass may be connected in multiple sections.

Compared with the prior art, the preparation process of the flexible non-combustible composite heat-preservation air pipe has the following effects:

1. the invention enables the whole air duct to reach the non-combustible A level through the selection of the core material, and can be used in places with high fire-proof level;

2. according to the invention, through the selection of the core material, excellent heat insulation performance is ensured while fire prevention is ensured;

3. according to the invention, through the selection of the core material, the flexible air pipe has the advantages of convenience in installation, cleaning and transfer.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

the invention provides a technical scheme that: a preparation process of a flexible non-combustible composite heat-preservation air pipe comprises the following steps:

s1, screening core materials: the surface layer is made of glass fiber cloth with fireproof performance, the inorganic fiber flexible material is selected as a core material, the fiber material is a structural material formed by a fiber material through a textile processing technology and is generally also called as a textile material, the application history of the fiber material is quite long, although no specific record is provided to indicate when the material is generated, in the ancient trade of human, the fiber material always occupies an important position to fully indicate the importance of the fiber material to the development of human, and the core material is compounded with the surface layer in the form of felt and blanket, so that the core material is made of the flexible material and can be bent and deformed to adapt to the shapes of various installation environments, in the step S1, the core material is selected from an A-level non-combustible heat-preservation material which is made of a natural high-quality high-temperature-resistant light material as an aggregate, natural plant protein fibers, and various inorganic modified materials and solidified materials are optimally combined, according to the principle of flexible gradual change and material compatibility of heat-insulating materials, the heat-insulating materials are prepared by adopting the internationally advanced inorganic bonding and anti-cracking technology through industrialized production, and a single-component finished product has the advantages of environment-friendly and energy-saving wall heat-insulating phase-change energy-saving materials which are integrated with various performances such as heat insulation, fire prevention, light weight, sound insulation, water resistance, cracking resistance, hollowing resistance, falling resistance and the like, and the core material is required to meet the material characteristics of soft material and excellent heat-insulating property while being non-combustible;

s2, sewing: the inorganic fiber core material is uniformly paved between two surface layers, a special sewing device and a wire material can be adopted to sew the composite layer, or a rivet can be adopted to carry out composite fixation, the rivet is a metal or non-combustible material, in the step S2, the wire material has the functions of fire prevention and flame retardation, the flame-retardant sewing thread is also called a flame-retardant thread, the ignition point is low, the flame-retardant effect is good, the wire material is not easy to ignite, can be self-extinguished away from a fire source, has the waterproof function, achieves the permanent flame-retardant effect, and can be obviously distinguished by burning compared with the non-flame-retardant thread, so that the joint of the inorganic fiber core material is not easy to melt due to higher external temperature, the stability of the joint of the inorganic fiber core material is higher, in the step S2, the inorganic fiber core material is fixedly embedded between the two surface layers, and the materials of the two surface layers have the wear resistance, the fireproof performance and the waterproof performance;

s3, straight pipe preparation: the twelve points of the straight pipe are sewn to form a cylindrical tubular structure, a cavity is formed inside the straight pipe, a support ring is installed in the pipe at a proper distance, the support ring is annular, the inside of the pipe is conveniently supported and shaped through the support ring, so that the inside of the straight pipe is not easy to collapse, the shape of an air pipe is more easily shaped, pipe ports are spliced in a movable mode, in the step S3, the pipe ports of two adjacent straight pipes are spliced in a zipper mode, and the two ports of the pipe are connected through a zipper, so that the connection of the pipe is more convenient and practical;

s4, manufacturing a bent pipe: the elbow adopts a right-angle mode, namely, one end of each of two straight pipes is spliced after being cut, and is lined with the flow guide cloth and the support ring, in the step S4, the cutting angle of the end parts of the two straight pipes is 45 degrees, two tangent planes are attached, so that the included angle between the two straight pipes is 90 degrees, the trend of the pipes is convenient to adjust, the pipes are bent by 90 degrees, and the flow guide cloth in the bent pipe is arc-shaped, so that the flow guide cloth is convenient to be sleeved with the inside of the bent pipe;

s5, manufacturing a multi-pass structure: two pieces of composite materials are selected to be butted and sewn, in the step S5, the multi-way structure can be a four-way joint, a cross-like mode is adopted, namely, the two pieces of cross-shaped composite materials are flatly placed on the multi-way structure, the rectangular composite materials with certain width are sewn with the sides of the multi-way structure, support rings are arranged at the ports, the ports of the multi-way structure can be conveniently supported in shape through the support rings, and can be conveniently sleeved with the ports of a straight pipe or a bent pipe, so that the matching of the multi-way structure and the straight pipe or the bent pipe is more stable, in the step S5, the multi-way structure can be a three-way joint, and the three-way joint can be formed by plugging one end of the four-way joint;

s6, splicing: and (4) according to a design drawing, performing combined connection on the straight pipe, the bent pipe and the multi-way structure, and assembling the required configuration.

Example 2:

s1, screening core materials: the surface layer is made of glass fiber cloth with fireproof performance, and inorganic fiber flexible materials are selected as core materials and compounded with the surface layer in a felt and blanket mode;

s2, sewing: the inorganic fiber core material is uniformly paved between two surface layers, a male magic tape and a female magic tape are connected in a bonding mode, the composite layer is connected, the flame-retardant sewing thread is also called a flame-retardant thread, the fire point is low, the flame-retardant effect is good, the flame-retardant sewing thread is not easy to ignite, the fire-retardant sewing thread is self-extinguished from a fire source, the waterproof function is realized, the permanent flame-retardant effect is achieved, and the fire-retardant sewing thread and the non-flame-retardant thread are compared to see obvious difference through burning, so that the joint of the inorganic fiber core material is not easy to melt due to higher external temperature, the stability of the joint of the inorganic fiber core material is higher, in the step S2, the inorganic fiber core material is fixedly embedded between the two surface layers, and the materials of the two surface layers have wear resistance;

s3, straight pipe preparation: the twelve-point direction of the straight pipe adopts a mode of adhesive connection of a male magic tape and a female magic tape to connect the pipe body of the straight pipe, so that the straight pipe is more convenient to close and unfold, a support ring is installed in the pipe at a proper distance, the support ring is annular, the support ring is convenient to support and shape the inside of the pipe, the inside of the straight pipe is not easy to collapse, the shape of an air pipe is also easier to shape, and the pipe ports are spliced in a movable mode;

s4, manufacturing a bent pipe: the elbow adopts a right-angle mode, namely, one end of each of two straight pipes is spliced after being cut, and the inside of the elbow is lined with a flow guide cloth and a support ring;

s5, manufacturing a multi-pass structure: selecting two pieces of composite materials for butt joint and sewing;

s6, splicing: and (4) according to a design drawing, performing combined connection on the straight pipe, the bent pipe and the multi-way structure, and assembling the required configuration.

Adopt public magic subsides and female magic to paste the mode of bonding connection, connect the body of straight tube for the closure of straight tube is more convenient with the expansion.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," and "secured" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integral to; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.