CN115418790A

CN115418790A - Low-volume-weight high-elasticity glass wool felt production equipment integrated system and production method

Info

Publication number: CN115418790A
Application number: CN202210969994.2A
Authority: CN
Inventors: 张泽滔
Original assignee: Shanghai Yanwuxia Technology Consulting Co ltd
Current assignee: Shanghai Yanwuxia Technology Consulting Co ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2022-12-02

Abstract

The invention relates to a low volume weight high elasticity glass cotton felt production facility integrated system, including the angle material opener, bale opener, rough opener, cotton-mixing box, fine loosening start, condenser, carding machine, lapping machine, oven feeder, glue sprayer, oven and automatic slitter set up sequentially, between two adjacent apparatuses, the outlet of the former apparatus corresponds to the inlet of the latter apparatus; the raw material of the system is glass fiber or other short fiber shreds, and the glue sprayer adopts thermosetting phenolic resin glue for spraying glue. Compared with the prior art, the invention mainly takes the glass fiber or other short chopped fibers as raw materials, does not need to melt glass at high temperature, and has the advantages of lower energy consumption of production process, higher production automation strength and higher production efficiency; the produced elastic felt has the advantages of good coefficient of resilience, small coefficient of heat conductivity, high tensile strength and the like.

Description

Low-volume-weight high-elasticity glass wool felt production equipment integrated system and production method

Technical Field

The invention relates to the field of glass wool felt production equipment, in particular to an integrated system of low-volume-weight high-elasticity glass wool felt production equipment and a production method.

Background

A large-scale full-containment low-temperature storage tank is a common storage facility in modern industrial production and is mainly used for storing low-temperature liquid media such as LNG (liquefied natural gas) and the like. Generally, the cold insulation system mainly comprises a concrete outer tank, a low-temperature steel inner tank and a cold insulation layer between the concrete outer tank and the low-temperature steel inner tank. The cold insulation layer is generally composed of a glass wool elastic felt and expanded perlite, the elastic felt is an important part in a cold insulation structure of the storage tank, the function of the elastic felt is not only combined with expanded perlite particles to play a role in cold insulation of a tank wall, but also the storage tank is contracted when being cooled or expanded when being returned when being heated when being fed, the pressure of the expanded perlite on the inner side of the storage tank caused by temperature change is relieved and weakened through the elastic felt, and meanwhile, the perlite particles in the annular space are reduced in shrinkage and are uniformly displaced up and down when being heated. Therefore, expanded perlite is filled in the annular space between the elastic felt and the concrete outer tank, so that the annular space between the inner tank and the outer tank, the inner tank bottom cold insulation composite layer and the vault aluminum alloy ceiling cold insulation layer form a complete and effective storage tank cold insulation layer, and the part is a key part of the low-temperature storage tank. However, in practical engineering, the elastic felt has insufficient resilience or cold insulation performance and the integral structure of the elastic felt is unreasonable, which causes the practical application failure, so the elastic felt glass wool with reasonable structure and stable material performance has important significance for the heat insulation effect of the large-scale full-containment low-temperature storage tank.

In the production of the fine glass fiber cotton, glass clinker is mainly used as a raw material and is produced and prepared by a flame injection process technology. Compared with industrial heat-insulating glass fiber cotton, the fine glass fiber cotton has lower heat conductivity and smaller volume weight, but the ultra-fine glass fiber cotton has high energy consumption and high production cost, and is mainly used in the fields of low-temperature refrigeration, biomedicine, precision manufacturing and aerospace.

In the prior art and process, blowing drawing of the raw fiber and beating forming of the fiber cotton are performed independently in the production space. The raw cotton production mainly comprises the production procedures of raw material proportioning and mixing, kiln melting and clarifying, glass liquid material channel cooling and homogenizing, bushing primary fiber forming, centrifugal secondary blowing fiber forming, material channel negative pressure water removal and cotton collection, drying and solidification, raw cotton pressurization and packaging and the like. And then, the finished product of the heat insulation plate is processed by the procedures of raw cotton dispersion, acidification dissolution, mechanical shearing, mixing, dilution and pulping, pressure forming, vacuum suction, drying and solidification and the like, and finally products such as a vacuum heat insulation plate or high-efficiency filter paper and the like are produced.

The existing production method of glass fiber cotton is a centrifugal blowing method and a flame blowing method, wherein the centrifugal blowing method is mainly used for drawing fiber by adopting high-temperature high-speed gas, the production cost is low, but the diameter of the formed fiber is between 5.5 and 12 mu m, and the formed fiber is generally used as an industrial heat-insulating material. The superfine glass fiber cotton with the diameter of 0.8-4 mu m can only be drawn by adopting a flame blowing method, the method adopts high-temperature and high-speed furnace end flame to carry out secondary forming and drawing of the glass fiber, huge fuel gas energy needs to be consumed, and the production cost of the raw cotton is greatly increased.

Disclosure of Invention

The invention aims to overcome the defects of high production cost and low production efficiency in the prior art and provide an integrated system and a production method of low-volume-weight high-elasticity glass wool felt production equipment.

The purpose of the invention can be realized by the following technical scheme:

the integrated system comprises a leftover opener, a bale opener, a coarse opener, a cotton mixing box, a fine loosening machine, a condenser, a carding machine, a lapping machine, a drying oven feeder, a glue sprayer, a drying oven and an automatic splitting machine which are sequentially arranged, wherein an outlet of the former equipment corresponds to an inlet of the latter equipment between the two adjacent equipment.

Furthermore, the bale opener, the coarse opener and the fine loosening machine are all provided with a dust removal unit for removing dust.

Furthermore, a vibration cotton box and a belt weigher are sequentially arranged between the condenser and the carding machine.

Further, the raw material of the system is chopped fiber.

Furthermore, the glue sprayer adopts thermosetting phenolic resin glue for spraying glue.

Further, the oven is an electric heating oven or a steam heating oven.

The invention also provides a production method of the integrated system of the production equipment of the glass wool felt with low volume weight and high elasticity, which comprises the following steps:

s1: taking short fiber shreds as raw materials, and screening by the leftover opener for preparation;

s2: opening the bags of the screened raw materials by a bag opener and feeding the materials;

s3: loosening and uniformly mixing the wound fibers transmitted by the bale opener through a coarse opener, a cotton mixing box and a fine opener to form a cotton shape, and removing impurities;

s4: short fibers and dust impurities are discharged into a dust chamber or a dust filter through an air duct along with air flow through meshes of a dust cage through a condenser, fibers on the surface of the dust cage are stripped, and the fibers fall into a cotton box;

s5: carding the mixed raw materials into a fluffy single-layer net shape state by a carding machine;

s6: stacking the net tires by a lapping machine to ensure that the fiber surface density of the raw material reaches the preset requirement;

s7: uniformly spraying the glass wool binder mixed solution on the surface of the fiber through a glue sprayer; then, the fiber after glue spraying is cured for 5 to 30 minutes at 130 to 200 ℃ through an oven, and is shaped and dried;

s8: and cooling the glass wool felt generated after solidification, and then cutting the standard product according to the product specification through an automatic splitting machine.

Further, the glass wool felt obtained by the step S8 has a density within a range of 13.5-18.5kg/m < 3 >, a fiber diameter not higher than 8 μm, a tensile strength greater than 15Kpa, a flammability less than 3500BTU/lb, a smoke density not higher than 50, a flame propagation property not higher than 25, a binder content within a range of 15-25%, a water content not higher than 0.5%, a coefficient of restitution K greater than 44%, and a thermal conductivity not higher than 0.04W/(m.K).

Furthermore, the raw material is glass fiber, and the glass wool adhesive adopted by the glue sprayer is thermosetting phenolic resin glue.

Further, the raw material has a fiber diameter of not more than 9 μm and a length of less than 100mm.

Compared with the prior art, the invention has the following advantages:

(1) The production method mainly adopts glass fiber or other short chopped fibers as raw materials, glass does not need to be melted at high temperature, and the system has the advantages of lower energy consumption of production process, higher production automation strength and higher production efficiency.

(2) The elastic felt produced by the integrated system of the glass wool felt production equipment has better coefficient of resilience, smaller coefficient of heat conductivity and higher tensile strength.

(3) The high-elasticity glass wool felt produced by the invention is produced by combining continuous textile glass fibers and thermosetting phenolic resin, and the glass fibers and the phenolic resin are combined in an air layer to generate random fiber orientation and have special strength and elasticity.

Drawings

FIG. 1 is a schematic structural diagram of an integrated system of a low-volume-weight high-elasticity glass wool felt production device provided by the invention;

in the figure, 1, a leftover opener, 2, a bale opener, 3, a dust removal unit, 4, a coarse opener, 5, a cotton mixing box, 6, a fine loosening machine, 7, a vibrating cotton box, 8, a belt scale, 9, a carding machine, 10, a lapping machine, 11, an oven feeder, 12, a glue sprayer, 13, an oven, 14, an automatic splitting machine, 15, a conveying frame, 16 and a condenser.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that the present product is conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

It should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

Example 1

As shown in fig. 1, the embodiment provides an integrated system of a low-volume-weight high-elasticity glass wool felt production device, which includes a scrap opener 1, a bale opener 2, a dust removal unit 3, a rough opener 4, a cotton mixing box 5, a fine loosening machine 6, a vibrating cotton box 7, a belt scale 8, a carding machine 9, a lapping machine 10, an oven feeder 11, a glue sprayer 12, an oven 13, an automatic splitting machine 14, a conveying frame 15 and a cotton condenser 16.

The raw material is glass fiber or other short fiber shreds, the glass fiber type is E-glass, the fiber diameter is less than or equal to 9 μm, and the length is less than 100mm. The raw material is white, free of impurities, free of oil stain and free of pollution.

Between two adjacent equipment in this production facility integrated system, the export of preceding equipment corresponds the entry of a back equipment, carries out material transmission through material transport mechanism between two adjacent equipment, material transport mechanism adopt current have material transport function the equipment can, for example, transmission band subassembly or material transport vechicle, no longer describe herein.

The first process equipment of the production equipment integration system is a leftover opener 1, realizes the screening of raw materials, and structurally comprises a rack, a cotton guide groove, a transmission mechanism, a cotton feeding mechanism, an opening mechanism and a cotton guiding mechanism.

The scrap opener 1 is followed by a bale opener 2 for unpacking and feeding.

The bale opener 2 is respectively provided with a coarse opener 4, a cotton mixing box 5 and a fine loosening machine 6 after working procedures, and the wound fibers are loosened and uniformly mixed to form a cotton shape and simultaneously remove various impurities.

The coarse opener 4, the fine opener 6 and the bale opener 2 are provided with a dust removal unit 3 for removing dust in time.

Partial short fibers and dust impurities are discharged into a dust chamber or a dust filter through an air duct along with air flow through meshes of a dust cage through a condenser 16, fibers on the surface of the dust cage are stripped by a beater and fall into a cotton box, and the cotton conveying and purifying effects are realized.

The carding machine 9 is arranged behind the vibrating cotton box 7 and in front of the lapping machine 10, and the carding machine 9 structurally comprises a main cylinder, an upper doffer, a lower doffer and a belt weigher; the mixed raw material is carded into a single-layer web state and fluffed by a carding machine 9.

A lapper 10 processes the fibers to the desired number of layers between the carding machine 9 and the oven feeder 11.

The glue sprayer 12 is positioned between the oven feeder 11 and the oven 13 and uniformly sprays the glass wool binder mixed liquid onto the surface of the glass fiber.

The oven 13 is positioned between the glue sprayer 12 and the automatic splitting machine 14, the oven 13 can be heated by electricity or steam, and the temperature of the oven can be automatically set. And (3) curing the glass fiber at 130-200 ℃ for 5-30 minutes after glue spraying, shaping and drying.

And cooling the glass wool felt generated after solidification, then feeding the glass wool felt to an automatic splitting machine 14, processing the glass wool felt to be 500-2000mm in thickness, 1-75m in length and 0.5-2m in width, and cutting the solidified glass wool into standard products according to the product specification.

Specifically, the production method adopting the system comprises the following steps:

(1) The raw material is prepared by screening, wherein glass fiber or other short fiber shreds are mainly used as the raw material, the type of the glass fiber is E-glass, the diameter of the fiber is less than or equal to 9 mu m, and the length of the fiber is less than 100mm. The raw material is white, free of impurities, free of oil stain and free of pollution.

(2) The method comprises the steps of unpacking and feeding, wherein various bundled raw materials such as glass fibers or other short fiber shreds are unpacked and fed through an unpacking machine (2), and dust generated in the unpacking process is treated by a dust removal unit (3).

(3) And (3) opening the fibers, namely loosening and uniformly mixing the wound fibers through a coarse opener 4, a cotton mixing box 5 and a fine opener 6 to form a cotton shape, and simultaneously removing various impurities.

(4) Partial short fibers and dust are discharged to a dust chamber or a dust filter through an air duct along with air flow through meshes of the dust cage through a condenser 16, fibers on the surface of the dust cage are stripped by a beater and fall into a cotton box, and the cotton conveying and purifying effects are realized.

(5) And (3) carding the fibers, namely carding the mixed raw materials into a single-layer net shape through a carding machine 9, and fluffing.

(6) And (3) laying the net tires, namely stacking the net tires by a lapping machine 10, wherein the fiber surface density meets the preset requirement and is prepared for the subsequent needling.

(7) Spraying glue and drying, spraying glue to the carded and multi-layer overlapped chopped glass fiber mat by a glue sprayer 12, uniformly spraying the glass wool binder mixed solution to the surface of the glass fiber, curing for 5-30 minutes at 130-200 ℃ by an oven 13, shaping and drying, and bonding and fixing the glass fibers of the mat layer and the reinforced glass fiber base cloth by using special glue to reinforce the fiber web to prepare the non-woven felt fabric.

(8) And cutting and forming, and finally cutting the solidified glass wool into standard products according to the product specification through an automatic cutting machine 14.

The density of the produced high-elasticity glass wool felt is 16kg/m3 (-2.5 kg/m) ³ +2.5kg/m ³ ) The diameter of the fiber is less than or equal to 8 μm,its tensile strength>15Kpa, flammability<3500BTU/lb, smoke density less than or equal to 50, flame spread less than or equal to 25, adhesive content 20% +/-5%, water content less than or equal to 0.5%, and rebound coefficient K>44 percent and the thermal conductivity coefficient is less than or equal to 0.04W/(m.K) (-the thermal conductivity coefficient measured at 10 degrees). The high-elasticity glass wool felt is coated or not coated with a composite aluminum foil.

The low volume weight and high elasticity glass cotton felt forming structure is multilayer and continuous, the number of layers of the cotton felt (100mm, 20-50 layers), the thickness of the cotton felt is 500-2000mm, and the lapping angle is as follows: 90 degrees. All glass wool adhesives use thermosetting phenolic resin glue. High elasticity glass wool mats are produced using continuous woven glass fibers in combination with a heat cured phenolic resin. The glass fibers and phenolic resin combine in the air layer to produce random fiber orientation with exceptional strength and elasticity.

The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the above teachings. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.

Claims

1. The utility model provides a low volume weight high elasticity glass cotton felt production facility integrated system, its characterized in that, including angle material opener (1), bale opener (2), thick opener (4), thoughtlessly cotton case (5), smart loosening machine (6), condenser (16), carding machine (9), lapping machine (10), oven feeding machine (11), spout gluey ware (12), oven (13) and automatic cutting machine (14) that set gradually, between two adjacent equipment, the export of former equipment corresponds the entry of latter equipment.

2. The integrated system for the production equipment of the glass wool felt with low volume weight and high elasticity as claimed in claim 1, wherein the bale opener (2), the coarse opener (4) and the fine loosening machine (6) are all provided with a dust removal unit (3) for removing dust.

3. The integrated system for the production equipment of the glass wool felt with low volume weight and high elasticity as claimed in claim 1, wherein a vibrating cotton box (7) and a belt scale (8) are further arranged between the condenser (16) and the carding machine (9) in sequence.

4. The integrated system for producing glass wool felt with low volume weight and high elasticity as claimed in claim 1, wherein the raw material of the system is chopped fiber.

5. The integrated system for producing glass wool felt with low volume weight and high elasticity as claimed in claim 4, wherein the glue sprayer (12) sprays glue by using thermosetting phenolic resin glue.

6. The integrated system for producing glass wool felt with low volume weight and high elasticity as claimed in claim 1, wherein the oven (13) is an electrically heated oven or a steam heated oven.

7. A method for producing a low volume weight high elasticity glass wool mat production facility integrated system as claimed in any one of claims 1 to 6, comprising the steps of:

s1: taking short fiber shreds as raw materials, and screening by the leftover opener (1) for preparation;

s2: opening the packages of the screened raw materials by a bale opener (2) and feeding the materials;

s3: loosening and uniformly mixing the wound fibers transmitted by the bale opener (2) through a coarse opener (4), a cotton mixing box (5) and a fine opener (6) to form a cotton shape, and removing impurities;

s4: short fiber and dust are discharged into a dust chamber or a dust filter through an air duct along with air flow through meshes of a dust cage by a condenser (16), and fiber on the surface of the dust cage is stripped and falls into a cotton box;

s5: carding the mixed raw materials into a fluffy single-layer net shape state by a carding machine (9);

s6: the net tires are stacked through a net laying machine (10), so that the fiber surface density of the raw material reaches the preset requirement;

s7: uniformly spraying the glass wool binder mixed solution on the surface of the fiber through a glue sprayer (12); then, the fiber after glue spraying is cured for 5 to 30 minutes at 130 to 200 ℃ through an oven (13), and is shaped and dried;

s8: and cooling the glass wool felt generated after solidification, and then cutting the standard product according to the product specification through an automatic splitting machine (14).

8. The method of claim 7, wherein the glass wool mat obtained by step S8 has a density in the range of 13.5 to 18.5kg/m3, a fiber diameter of not more than 8 μm, a tensile strength of more than 15Kpa, a flammability of less than 3500BTU/lb, a smoke density of not more than 50, a flame propagation property of not more than 25, a binder content in the range of 15 to 25%, a water content of not more than 0.5%, a coefficient of restitution K of more than 44%, and a thermal conductivity of not more than 0.04W/(m-K).

9. The method according to claim 7, characterized in that the raw material is glass fiber and the glass wool binder used by the glue sprayer (12) is a thermosetting phenolic resin glue.

10. The method according to claim 7, characterized in that the fibres of the raw material have a diameter not higher than 9 μm and a length less than 100mm.