CN109868598B - Impregnation method - Google Patents
Impregnation method Download PDFInfo
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- CN109868598B CN109868598B CN201811339587.3A CN201811339587A CN109868598B CN 109868598 B CN109868598 B CN 109868598B CN 201811339587 A CN201811339587 A CN 201811339587A CN 109868598 B CN109868598 B CN 109868598B
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- glue
- glass fiber
- pressure
- fiber felt
- glue injection
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/18—Processes for applying liquids or other fluent materials performed by dipping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
- B05C3/02—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material
- B05C3/04—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material with special provision for agitating the work or the liquid or other fluent material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C3/00—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material
- B05C3/02—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material
- B05C3/12—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material for treating work of indefinite length
- B05C3/125—Apparatus in which the work is brought into contact with a bulk quantity of liquid or other fluent material the work being immersed in the liquid or other fluent material for treating work of indefinite length the work being a web, band, strip or the like
Abstract
The invention provides a gum dipping method, which comprises the following steps of S1, arranging a glass fiber felt in a reel shape; and step S2, forcing the glue solution to flow through the glass fiber felt along the radial direction of the glass fiber felt winding drum by using high pressure. The invention can be used for whole-roll production, the product length is not limited by the length of the impregnation equipment, and air bubbles in the glass fiber felt are quickly discharged, so that the glue solution is uniformly impregnated into the glass fiber felt, and the production efficiency is improved by 30%.
Description
Technical Field
The invention relates to the technical field of felts, in particular to a gumming method for gumming a glass fiber felt.
Background
The aerogel felt is prepared by taking silicon dioxide aerogel as a main raw material and doping in common glass fiber. The product improves the 400 ℃ high temperature resistance limit of common glass fiber, the heat insulation performance is 3 to 8 times of that of the traditional material, the product can resist the high temperature above 700 ℃, and has the characteristics of flatness, mechanical resistance and easy processing, the heat conductivity coefficient is extremely low, and the product is a novel material in the industrial heat insulation application field.
The existing gum dipping method is mainly to spread and lay a glass fiber felt roll in a cuboid gel tank as a horizontal gum dipping and gelling device, wherein the size of the gel tank is 15m2m 0.65m, can hold 15m3Spreading the glass fiber felt roll in a gel tank, and allowing the gel solution to pass through the glass fiber felt.
Such gel tank equipment has the following disadvantages: large occupied area and high equipment investment; a special unreeling and reeling trolley needs to be configured; the glue solution is not forced to circulate, and the simple soaking effect is poor; the equipment is huge, the cleaning and winding operation of production excess materials is difficult, the labor intensity of workers is high, and the operation environment is severe; the product length is limited by the length of the gel bath.
Disclosure of Invention
The invention relates to a glue dipping device and a method thereof, which is a divisional application of an invention patent with the application number of 2017112628848 and the application date of 2017, 12 months and 04 days.
The invention aims to provide a gum dipping method to solve the technical problems of large occupied area, high equipment investment, complex operation and the like in the prior art.
In order to solve the technical problem, the invention provides a gum dipping method, which comprises the following steps:
step S1, arranging the glass fiber felt in a reel shape;
and step S2, forcing the glue solution to flow through the glass fiber felt along the radial direction of the glass fiber felt winding drum by using high pressure.
Further, the glass fiber felt winding drum is horizontally placed, and the glue solution pressure value is gradually reduced in the axial direction of the winding drum and in the extending direction from the middle of the winding drum to the two ends of the winding drum.
Further, in the axial direction of the winding drum, the pressure value of the glue solution is in normal distribution.
Further, in the radial direction of the glass fiber felt roll, the glue solution flows from the inside of the roll to the outside thereof, or the glue solution flows from the outside of the roll to the inside thereof.
Further, in the gum dipping process, the pressure borne by the whole glass fiber felt reel is not lower than 0.03 MPa.
Further, in the radial direction of the glass fiber felt winding drum, the pressure value of the glue solution outflow end of the glass fiber felt winding drum is 0.05-0.1 MPa.
The glue injection method disclosed by the invention has the advantages of less equipment investment, small occupied area and flexible production, can be used for glue dipping and gel production procedures of the rolled aerogel glass fiber felt, and greatly improves the production efficiency and yield of the nano-pore aerogel composite heat insulation product.
Meanwhile, the pressure value of the glue solution is normally distributed in the axial direction of the winding drum, so that the problem of uneven gum dipping of the glass fiber felt is effectively solved.
The invention also discloses a gumming device, which comprises: the glue injection sleeve, the pressure-bearing barrel and the pump body are arranged in the cavity;
the pressure-bearing barrel is sleeved outside the glue injection sleeve, and an annular cavity for accommodating the glass fiber felt winding drum is arranged between the pressure-bearing barrel and the glue injection sleeve;
the side surface of the excircle of the glue injection sleeve is provided with a glue injection hole communicated with the inside and the outside of the cylinder cavity of the glue injection sleeve;
the outer circle side surface of the pressure-bearing barrel is provided with a glue discharging hole which is communicated with the inside and the outside of the annular cavity;
winding the glass fiber felt on the glue injection sleeve to form the glass fiber felt winding drum;
the pump body is communicated with the barrel cavity of the glue injection sleeve through a pipeline and is used for injecting glue liquid into the barrel cavity, the glue liquid is forced to sequentially pass through the glue injection hole, the annular cavity and the glue discharge hole through pressure, and then glue dipping treatment of the glass fiber felt in the annular cavity is achieved.
Further, the glue injection sleeve and the pressure-bearing barrel are coaxially arranged.
Further, the glue injection sleeve and the pressure-bearing barrel are horizontally arranged.
Namely, the axes of the glue injection sleeve and the bearing barrel are horizontally arranged.
Furthermore, the pressure-bearing barrel is formed by assembling a first half barrel and a second half barrel.
The pressure-bearing barrel is divided by a horizontal plane containing the middle axis of the pressure-bearing barrel, the divided upper module is a first half barrel, and the lower module is a second half barrel.
After the glass fiber felt is wound on the glue injection sleeve, the first half barrel and the second half barrel can be buckled together, and the first half barrel and the second half barrel are connected together by fasteners such as bolts, nuts or pin shafts.
Furthermore, the glass fiber felt winding drum is clamped between the pressure-bearing barrel and the glue injection sleeve, and the inner side wall of the pressure-bearing barrel is pressed on the outer circle side face of the glass fiber felt winding drum.
The pressure-bearing barrel and the glue injection sleeve clamp the glass fiber felt reel, the shape and the size of the glass fiber felt reel can be effectively kept by the pressure-bearing barrel, and the glue injection pressure of the whole glass fiber felt reel is guaranteed and maintained.
Furthermore, in the circumferential direction of the glue injection sleeve, the plurality of glue injection holes are arranged in the same and uniform interval mode.
Furthermore, in the axial direction of the glue injection sleeve, the sum of the sectional areas of the glue injection holes in unit length is a unit glue injection area;
in the telescopic axial of injecting glue and from injecting glue sleeve middle part to its both ends extending direction, unit injecting glue area reduces gradually.
Furthermore, in the axial direction of the glue injection sleeve, the unit glue injection area is normally distributed.
Furthermore, the sum of the sectional areas of all the glue injection holes on the glue injection sleeve is 2-4 times of the sectional area of the cylinder cavity of the glue injection sleeve.
Further, in the axial direction of the glue injection sleeve and in the extending direction from the middle part of the glue injection sleeve to the two ends of the glue injection sleeve, the distribution of the unit glue injection area satisfies the following formula:
wherein, f (x) is a distribution function of unit glue injection area;
setting the axial central point of the glue injection sleeve as the origin, and setting x as a coordinate value extending from the middle part of the glue injection sleeve to the two ends of the glue injection sleeve;
pi-circumference ratio;
sigma-is related to the width L of the glass fiber felt reel, and the sigma is 0.1L-0.3L.
The middle of the glue injection sleeve is provided with the most dense holes, the hole opening rate of the middle of the glue injection sleeve is 50% -85% within the width range of the glass fiber felt reel 1/3, and the two sides of the glue injection sleeve are gradually decreased.
Namely, the opening rate of the middle 1/3 width range of the glue injection sleeve is 50% -85%, and the opening rates of the two sides are decreased gradually.
In practical engineering application, a method of simulating normal distribution is adopted for opening holes, and glue injection holes in the glue injection sleeve are distributed intermittently at intervals rather than continuously;
for satisfying unit injecting glue area and being normal distribution, can realize through the gluey hole quantity of glue injection on the increase and decrease unit length, also can realize through the size that changes the gluey hole (help reducing the machining volume and make things convenient for follow-up incomplete gluey clearance this moment).
Furthermore, in the axial direction of the pressure-bearing barrel, the sum of the sectional areas of the glue discharging holes in unit length is a unit glue discharging area;
the glue discharging area per unit is gradually reduced in the axial direction of the pressure-bearing barrel and in the extending direction from the middle part of the pressure-bearing barrel to the two ends of the pressure-bearing barrel.
Furthermore, in the axial direction of the pressure-bearing barrel, the unit glue discharging area is normally distributed.
Furthermore, the sum of the sectional areas of all the glue discharging holes on the pressure-bearing barrel is 5-10 times of the sectional area of the cavity of the glue injection sleeve barrel.
So that the glue solution is kept in the barrel with a positive pressure value of 0.05-0.1 MPa during glue injection.
Further, in the axial direction of the pressure-bearing barrel and in the extending direction from the middle part of the pressure-bearing barrel to the two ends of the pressure-bearing barrel, the distribution of the unit glue discharging area meets the following formula:
wherein g (x) is a distribution function of unit rubber discharge area;
setting the axial central point of the pressure-bearing barrel as the origin (coinciding with the center of the glue injection sleeve, namely the center of the width direction of the glass fiber felt winding drum), and x is a coordinate value extending from the middle part of the pressure-bearing barrel to the two ends of the pressure-bearing barrel;
pi-circumference ratio;
sigma-is related to the width L of the glass fiber felt reel, and the sigma is 0.1L-0.3L.
Wherein it is provided with: the ratio of the glue discharging holes is the sum of the unit glue discharging area/the sectional area of all the glue discharging holes;
when the aperture of the glue discharging holes is consistent, the ratio of the glue discharging holes is equal to the number of the glue discharging holes per unit length/the total number of the glue discharging holes.
The distribution function of the ratio of the glue ejection holes can be described with reference to the ratio distribution function of the glue injection holes.
Furthermore, the pump body is a chemical centrifugal pump, and a motor for driving the pump body to work is a variable-frequency explosion-proof motor.
Further, the glue dipping device also comprises a glue dipping tank for receiving the glue solution and preventing the glue solution from splashing; the glue dipping tank comprises a lower tank body and an upper cover; the glue injection sleeve and the pressure-bearing barrel are arranged in the lower groove body.
The lower trough body is arranged on the rack in a turnover manner so as to facilitate feeding and discharging;
the upper cover is arranged on the rack in a lifting manner.
The frame is provided with a hydraulic cylinder, a cylinder, an electric telescopic rod and other driving mechanisms, and the upper cover is arranged on the frame in a liftable mode through the driving mechanisms.
After the upper cover is lifted, the glue injection sleeve and the pressure-bearing barrel are exposed, and the lower trough body can be loaded and unloaded after being turned. After the material loading, the reverse upset of lower cell body resets, and the upper cover falls down will the injecting glue sleeve with the intracavity that holds of cell body under the pressure-bearing bucket closing cap prevents that the during operation glue solution from splashing.
The lower tank body is pivoted on the rack through a pivoting shaft and the like, and the rack is provided with a motor and a transmission mechanism for overturning the lower tank body.
Furthermore, two ends of the glue injection sleeve are respectively provided with a glue solution inlet, and the two glue solution inlets are respectively connected with the outlet of the pump body through pipelines;
and a control valve for alternately inputting glue into the cylinder cavity through two glue inlets is arranged on the pipeline.
The control valve is in the prior art, for example, the pump body is respectively connected with the two glue inlets through two branches, the two branches are respectively provided with an electronic control valve, and the two glue inlets can be alternately supplied with glue by utilizing control modules such as a controller to alternately pulse control signals to the two electronic control valves.
The glue solution is alternately input from the glue solution inlets at the two ends, so that the influence of factors such as equipment or pipelines on the glue dipping effect of the glass fiber felt reel can be effectively reduced, and the glue dipping of the glass fiber felt reel is more uniform.
Further, a glue solution outlet is formed in the bottom of the lower tank body, and the glue solution outlet is connected with an inlet of the pump body through a pipeline and used for circulation of glue solution;
the inlet of the pump body is also communicated with the glue storage barrel through a pipeline and is used for continuously supplementing glue solution.
The gel tank equipment in the prior art has large floor area and high equipment investment; a special unreeling and reeling trolley needs to be configured; the glue solution is not forced to circulate, and the simple soaking effect is poor; the equipment is huge, the cleaning and winding operation of production excess materials is difficult, the labor intensity of workers is high, and the operation environment is severe; the product length is limited by the length of the gel bath.
The gum dipping equipment provided by the invention uses the rolled glass fiber felt, the glass fiber felt is wound on the gum dipping sleeve, or the glass fiber felt and the isolation net are wound (or sleeved) on the gum dipping sleeve in advance in a compounding way, the whole roll production can be realized, and the length of a product is not limited by the length of the gum dipping equipment;
and then the glue injection sleeve is placed in a pressure-bearing barrel and finally placed in a glue dipping tank, glue liquid is circulated inside and outside the glass fiber felt roll through a pump body and a pipeline, certain pressure is generated in the pressure-bearing barrel, bubbles in the glass fiber felt are quickly discharged, the glue liquid is uniformly impregnated into the glass fiber felt, and the production efficiency is improved by 30%.
In a word, the invention adopts the horizontal type positive pressure center glue injection method, the equipment investment is less, the occupied area is small, one glue dipping tank equipment produces a roll of products, the control is independent, and the production is flexible. The method effectively solves the problem of uneven gum dipping of the glass fiber felt, can be used for gum dipping and gel production procedures of the roll-shaped aerogel glass fiber felt, and greatly improves the production efficiency and yield of the nano-pore aerogel composite heat insulation product.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of a gumming apparatus provided in an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a pressure-bearing barrel in an embodiment of the invention;
FIG. 3 is a schematic structural diagram of a glue injection sleeve according to an embodiment of the present invention;
FIG. 4 is a front view of a dipping apparatus provided in an embodiment of the invention;
FIG. 5 is a side view of FIG. 4;
FIG. 6 is a perspective view of a pressure containing bucket in an embodiment of the present invention;
fig. 7 is a perspective view of a gumming apparatus provided in an embodiment of the present invention;
FIG. 8 is a distribution diagram of the ratio of the holes on the glue injection sleeve according to the embodiment of the present invention.
Reference numerals:
1-a drive mechanism; 2-a frame; 5-an actuator; 6-a control module; 10-a glue dipping tank; 11-a lower trough body; 12-upper cover; 20-glue injection sleeve; 21-a left glue solution inlet; 22-right glue solution inlet; 23-a sealing ring; 24-glue injection holes; 30-pressure bearing barrel; 31-glue discharging holes; 30 a-first half-tub; 30 b-a second half-tub; 40-a pump body; and 50-glue storage barrel.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present 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.
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 the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present invention will be further explained with reference to specific embodiments.
Example 1
The impregnation method provided by the embodiment comprises the following steps:
step S1, arranging the glass fiber felt in a reel shape;
and step S2, forcing the glue solution to flow through the glass fiber felt along the radial direction of the glass fiber felt winding drum by using high pressure.
In the above embodiment, it is more preferable that the roll of the glass fiber mat is horizontally placed, and the pressure value of the glue solution is gradually decreased in the axial direction of the roll and in the direction extending from the middle of the roll to both ends thereof.
Specifically, the glue flows from the inside of the roll to the outside thereof or from the outside of the roll to the inside thereof in the radial direction of the glass mat roll. And in the axial direction of the winding drum, the pressure value of the glue solution is in normal distribution. During gum dipping, the gum solution is alternately input from the two ends of the winding drum, so that the gum dipping of the glass fiber felt winding drum is more uniform.
In the process of gum dipping, the pressure born by the whole glass fiber felt reel is not lower than 0.03 MPa. Wherein, the pressure value of the glue solution outflow end of the glass fiber felt winding drum is 0.05-0.1 MPa in the radial direction of the glass fiber felt winding drum.
The glue injection method disclosed by the invention has the advantages of less equipment investment, small occupied area and flexible production, can be used for glue dipping and gel production procedures of the rolled aerogel glass fiber felt, and greatly improves the production efficiency and yield of the nano-pore aerogel composite heat insulation product.
Meanwhile, the pressure value of the glue solution is normally distributed in the axial direction of the winding drum, so that the problem of uneven glue dipping of the glass fiber felt is effectively solved.
Example 2
As shown in fig. 1 to 7, the present embodiment discloses a dipping apparatus, which includes: the glue injection sleeve 20, the pressure-bearing barrel 30 and the pump body 40;
the pressure-bearing barrel 30 is sleeved outside the glue injection sleeve 20, and an annular cavity for accommodating the glass fiber felt winding drum is arranged between the pressure-bearing barrel and the glue injection sleeve;
as shown in fig. 3, the side surface of the outer circle of the glue injection sleeve 20 is provided with a glue injection hole 24 communicating the inside and the outside of the cylinder cavity of the glue injection sleeve 20;
as shown in fig. 2, the outer circumferential side surface of the pressure-bearing barrel 30 is provided with a glue discharging hole 31 communicating the inside and the outside of the annular cavity;
winding the glass fiber felt on the glue injection sleeve 20 to form a glass fiber felt reel;
the pump body 40 is communicated with the barrel cavity of the glue injection sleeve 20 through a pipeline, and is used for injecting glue liquid into the barrel cavity, and forcing the glue liquid to sequentially pass through the glue injection hole 24, the annular cavity and the glue discharge hole 31 by using pressure, so that the glue dipping treatment of the glass fiber felt in the annular cavity is realized.
Wherein, the glue injection sleeve 20 and the pressure-bearing barrel 30 are coaxially arranged. The glue injection sleeve 20 and the pressure-bearing barrel 30 are horizontally arranged. Namely, the axes of the glue injection sleeve 20 and the pressure-bearing barrel 30 are horizontally arranged.
As shown in fig. 6, the pressure-bearing tub 30 is assembled by a first tub half 30a and a second tub half 30 b. The pressurized barrel 30 is divided by a horizontal plane including the middle axis thereof, and the divided upper module is a first half barrel 30a and the lower module is a second half barrel 30 b.
After the glass fiber mat is wound on the glue injection sleeve 20, the first half barrel 30a and the second half barrel 30b can be buckled together, and the first half barrel and the second half barrel are connected together by fasteners such as bolts, nuts or pin shafts.
Preferably, the glass fiber mat winding drum is clamped between the pressure-bearing barrel 30 and the glue injection sleeve 20, and the inner side wall of the pressure-bearing barrel 30 is pressed against the outer circle side surface of the glass fiber mat winding drum. The pressure-bearing barrel 30 and the glue injection sleeve 20 clamp the glass fiber felt reel, the pressure-bearing barrel 30 can effectively keep the shape and the size of the glass fiber felt reel, and meanwhile, the glue injection pressure of the whole glass fiber felt reel is guaranteed and maintained.
In the circumferential direction of the glue injection sleeve 20, the plurality of glue injection holes 24 have the same aperture and are uniformly distributed at intervals. In the axial direction of the glue injection sleeve 20, the sum of the sectional areas of the glue injection holes 24 in unit length is the unit glue injection area; in the axial of injecting glue sleeve 20 and from injecting glue sleeve 20 middle part to its both ends extending direction, unit injecting glue area reduces gradually. More specifically, the unit injection area is normally distributed in the axial direction of the injection sleeve 20.
The sum of the sectional areas of all the glue injection holes 24 on the glue injection sleeve 20 is 2-4 times of the sectional area of the cavity of the glue injection sleeve 20.
In the axial direction of injecting glue sleeve 20 and from injecting glue sleeve 20 middle part to its both ends extending direction, the distribution of unit injecting glue area satisfies following formula:
wherein, f (x) is a distribution function of unit glue injection area;
setting the central point of the glue injection sleeve 20 in the axial direction as the origin, and x is a coordinate value extending from the middle of the glue injection sleeve 20 to the two ends thereof;
pi-circumference ratio;
σ -is related to the width L of the roll of glass mat, and
the pattern of glue holes 24 in the glue injection sleeve 20 can be seen in figure 8.
As shown in fig. 8, L is the opening range of the glue injection sleeve 20 (i.e., the width of the fiberglass felt roll), and the area covered by the pattern above the X-axis is the ratio of the glue injection holes 24 (i.e., the sum of the unit glue injection area/the cross-sectional area of all the glue injection holes 24, and when the diameters of the glue injection holes 24 are consistent, the ratio of the glue injection holes 24 is the number of glue injection holes 24/the total number of glue injection holes 24 per unit length).
The holes in the middle of the glue injection sleeve 20 are the most dense, the hole opening rate in the middle is about 68.2% within the width range of the glass fiber felt reel 1/3, and the two sides decrease gradually.
In practical engineering application, a method of simulating normal distribution is adopted for opening holes, and the glue injection holes 24 in the glue injection sleeve 20 are distributed intermittently at intervals rather than continuously;
for satisfying unit injecting glue area and being normal distribution, can realize through the 24 quantity of glue injection hole on the increase and decrease unit length, also can realize through the size that changes glue injection hole 24 (help reducing the machining volume and make things convenient for follow-up incomplete gluey clearance this moment).
In the axial direction of the glue injection sleeve 20, the sum of the sectional areas of the glue injection holes 24 in unit length is the unit glue injection area;
in the axial of injecting glue sleeve 20 and from injecting glue sleeve 20 middle part to its both ends extending direction, unit injecting glue area reduces gradually.
In the axial direction of the pressure-bearing barrel 30, the sum of the sectional areas of the glue discharging holes 31 in unit length is the unit glue discharging area;
the unit glue discharge area is gradually reduced in the axial direction of the pressure-bearing barrel 30 and in the extending direction from the middle of the pressure-bearing barrel 30 to the two ends thereof.
In the axial direction of the pressure-bearing barrel 30, the unit glue discharging area is normally distributed.
The sum of the sectional areas of all the glue discharging holes 31 on the pressure-bearing barrel 30 is 5-10 times of the sectional area of the cavity of the glue injection sleeve 20.
So that the glue solution is kept in the barrel with a positive pressure value of 0.05-0.1 MPa during glue injection.
In the axial direction of the pressure-bearing barrel 30 and in the extending direction from the middle part of the pressure-bearing barrel 30 to the two ends thereof, the distribution of the unit glue discharging area satisfies the following formula:
wherein g (x) is a distribution function of unit rubber discharge area;
setting the axial central point of the pressure-bearing barrel 30 as the origin (coinciding with the center of the glue injection sleeve 20, i.e. the center of the width direction of the fiberglass felt roll), and x is a coordinate value extending from the middle of the pressure-bearing barrel 30 to the two ends thereof;
pi-circumference ratio;
σ -is related to the width L of the roll of glass mat, and
wherein it is provided with: the ratio of the glue discharging holes is the sum of the unit glue discharging area/the sectional area of all the glue discharging holes;
when the diameters of the glue discharging holes 31 are consistent, the ratio of the glue discharging holes is equal to the number of the glue discharging holes 31 per unit length/the total number of the glue discharging holes 31.
The distribution function of the ratio of the glue ejection holes can be described with reference to the ratio distribution function of the glue injection holes 24.
Wherein, the pump body 40 is a chemical centrifugal pump, and the motor for driving the pump body to work is a variable-frequency explosion-proof motor.
The gum dipping equipment also comprises a gum dipping tank 10 for receiving the gum solution and preventing the gum solution from splashing; the glue dipping tank 10 comprises a lower tank body 11 and an upper cover 12; the glue injection sleeve 20 and the pressure-bearing barrel 30 are arranged in the lower groove body 11.
The lower trough body 11 is arranged on the frame 2 in a turnover way so as to be convenient for feeding and discharging; the upper cover 12 is arranged on the frame 2 in a liftable manner. The frame 2 is provided with a hydraulic cylinder, a cylinder, an electric telescopic rod and other driving mechanisms 1, and the upper cover 12 is arranged on the frame 2 through the driving mechanisms 1 in a lifting manner.
After the upper cover 12 is lifted, the glue injection sleeve 20 and the pressure-bearing barrel 30 are exposed, and the lower tank body 11 can be loaded and unloaded after being turned. After the material loading, the reverse upset of cell body 11 resets down, and upper cover 12 falls down with injecting glue sleeve 20 and pressure-bearing bucket 30 closing cap in the intracavity that holds of cell body 11 down, prevents that the during operation glue solution from splashing.
The lower tank body 11 is pivoted on the frame 2 through a pivoting shaft and the like, and the frame 2 is provided with an actuating mechanism 5 such as a motor and a transmission mechanism and the like for turning over the lower tank body 11.
The two ends of the glue injection sleeve 20 are respectively provided with a left glue solution inlet 21 and a right glue solution inlet 22, and the two glue solution inlets are respectively connected with the outlet of the pump body 40 through pipelines; the left glue solution inlet 21 and the right glue solution inlet 22 are respectively connected with the pump body through glue injection pipelines, and a sealing ring 23 is arranged between the glue injection pipelines and the glue injection sleeve.
As shown in fig. 1, the pipeline is provided with a control valve for alternately inputting glue solution into the cylinder cavity through two glue solution inlets. The control valve is in the prior art, for example, the pump body 40 is connected with the two glue inlets through two branches, the two branches are respectively provided with an electronic control valve, and the two glue inlets can be alternately supplied with glue by alternately applying pulse control signals to the two electronic control valves by using a control module 6 such as a controller.
The glue solution is alternately input from the glue solution inlets at the two ends, so that the influence of factors such as equipment or pipelines on the glue dipping effect of the glass fiber felt reel can be effectively reduced, and the glue dipping of the glass fiber felt reel is more uniform.
The bottom of the lower tank body 11 is provided with a glue solution outlet, and the glue solution outlet is connected with an inlet of the pump body 40 through a pipeline and used for circulation of glue solution; the inlet of the pump body 40 is also communicated with the glue storage barrel 50 through a pipeline for continuously supplementing glue solution.
The gel tank equipment in the prior art has large floor area and high equipment investment; a special unreeling and reeling trolley needs to be configured; the glue solution is not forced to circulate, and the simple soaking effect is poor; the equipment is huge, the cleaning and winding operation of production excess materials is difficult, the labor intensity of workers is high, and the operation environment is severe; the product length is limited by the length of the gel bath.
The glue dipping equipment provided by the invention uses the rolled glass fiber felt, the glass fiber felt is wound on the glue injection sleeve, or the glass fiber felt and the isolation net are wound (or sleeved) on the glue injection sleeve 20 in advance in a compounding way, the whole roll production can be realized, and the length of a product is not limited by the length of the glue dipping equipment;
and then the glue injection sleeve 20 is placed in the pressure-bearing barrel 30 and finally placed in a glue dipping tank, glue liquid is circulated inside and outside the glass fiber felt roll through the pump body 40 and a pipeline, certain pressure is generated in the pressure-bearing barrel 30, bubbles in the glass fiber felt are quickly discharged, the glue liquid is uniformly impregnated into the glass fiber felt, and the production efficiency is improved by 30%.
In a word, the invention adopts the horizontal type positive pressure center glue injection method, the equipment investment is less, the occupied area is small, one glue dipping tank equipment produces a roll of products, the control is independent, and the production is flexible. The method effectively solves the problem of uneven gum dipping of the glass fiber felt, can be used for gum dipping and gel production procedures of the roll-shaped aerogel glass fiber felt, and greatly improves the production efficiency and yield of the nano-pore aerogel composite heat insulation product.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (3)
1. A gum dipping method is characterized by comprising the following steps:
step S1, arranging the glass fiber felt in a reel shape;
step S2, forcing the glue solution to flow through the glass fiber felt along the radial direction of the glass fiber felt winding drum by using high pressure; in the axial direction of the winding drum, the pressure values of the glue solution are in normal distribution;
the dipping equipment used in the method comprises: the glue injection sleeve, the pressure-bearing barrel and the pump body are arranged in the cavity;
the pressure-bearing barrel is sleeved outside the glue injection sleeve, and an annular cavity for accommodating the glass fiber felt winding drum is arranged between the pressure-bearing barrel and the glue injection sleeve;
the side surface of the excircle of the glue injection sleeve is provided with a glue injection hole communicated with the inside and the outside of the cylinder cavity of the glue injection sleeve;
the outer circle side surface of the pressure-bearing barrel is provided with a glue discharging hole which is communicated with the inside and the outside of the annular cavity;
winding the glass fiber felt on the glue injection sleeve to form the glass fiber felt winding drum;
the pump body is communicated with the cylinder cavity of the glue injection sleeve through a pipeline and is used for injecting glue liquid into the cylinder cavity, and the glue liquid is forced to sequentially pass through the glue injection hole, the annular cavity and the glue discharge hole by pressure, so that the glue dipping treatment of the glass fiber felt in the annular cavity is realized;
the glass fiber felt winding drum is clamped between the pressure-bearing barrel and the glue injection sleeve, and the inner side wall of the pressure-bearing barrel is pressed against the outer circle side surface of the glass fiber felt winding drum;
glue inlets are respectively arranged at two ends of the glue injection sleeve, and the glue is alternately input from the glue inlets at the two ends.
2. The impregnation method according to claim 1, wherein the dope flows from the inside of the web to the outside thereof in a radial direction of the web.
3. The impregnation method according to claim 1, wherein the pressure applied to the whole roll of glass fiber mat during impregnation is not lower than 0.03 MPa.
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| CN201811339587.3A CN109868598B (en) | 2017-12-04 | 2017-12-04 | Impregnation method |
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| CN201711262884.8A CN107930979B (en) | 2017-12-04 | 2017-12-04 | A kind of impregnation equipment and its method |
| CN201811339587.3A CN109868598B (en) | 2017-12-04 | 2017-12-04 | Impregnation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114007999A (en) * | 2019-09-03 | 2022-02-01 | 株式会社Lg化学 | Aerogel felt |
| CN110953853A (en) * | 2019-12-27 | 2020-04-03 | 航天建筑设计研究院有限公司阳泉航天材料应用技术分公司 | Material drying method and device |
| CN111925186B (en) * | 2020-07-11 | 2022-03-11 | 巩义市泛锐熠辉复合材料有限公司 | Preparation method of aluminum silicate fiber reinforced aerogel felt and impregnation reaction kettle |
| CN113429057B (en) * | 2020-07-13 | 2022-09-06 | 天津工业大学 | Oxidizing active water preparation device and natural fiber dyeing and finishing treatment device thereof |
| CN112503898A (en) * | 2020-11-11 | 2021-03-16 | 上杭鑫昌龙实业有限公司 | Glass yarn production system |
| CN112474177B (en) * | 2020-11-23 | 2024-03-19 | 航天建筑设计研究院有限公司阳泉航天材料应用技术分公司 | Roll-shaped heat insulation material gum dipping method and equipment thereof |
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| CN105655069A (en) * | 2016-04-11 | 2016-06-08 | 孟繁恒 | Impregnation method for dry capacitance type high-voltage bushing core |
| CN205797636U (en) * | 2016-06-28 | 2016-12-14 | 明光瑞智电子科技有限公司 | A kind of glass cloth dipping device for producing copper-clad plate |
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| US20090288595A1 (en) * | 2008-05-24 | 2009-11-26 | He Yufang | Device with revolving shafts for transversely soaking prepreg |
| CN102430503A (en) * | 2011-11-24 | 2012-05-02 | 广东生益科技股份有限公司 | Glass fiber cloth gum dipping method and device thereof |
| CN104826774A (en) * | 2015-04-15 | 2015-08-12 | 南京先声合成材料有限公司 | Asphalt waterproof coil dip coating pressure roller |
| CN204728054U (en) * | 2015-06-09 | 2015-10-28 | 常熟市永利坚新材料有限公司 | A kind of for the manufacture of the equipment of multi-fibre compound without latitude cloth prepreg |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105655069A (en) * | 2016-04-11 | 2016-06-08 | 孟繁恒 | Impregnation method for dry capacitance type high-voltage bushing core |
| CN205797636U (en) * | 2016-06-28 | 2016-12-14 | 明光瑞智电子科技有限公司 | A kind of glass cloth dipping device for producing copper-clad plate |
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| CN109868598A (en) | 2019-06-11 |
| CN107930979A (en) | 2018-04-20 |
| CN107930979B (en) | 2018-12-11 |
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