Defoaming device for base material gel

Abstract

The utility model relates to a defoaming device for base material gel, which comprises a conveying belt mechanism for conveying a base material, a glue discharging pipe for discharging glue solution towards the conveying belt mechanism, a rotating roller and a flow guide mechanism, the rotating roller is rotationally arranged above the conveying belt mechanism; the flow guide mechanism comprises a flow guide plate, and the flow guide plate is obliquely and fixedly arranged relative to the glue discharging pipe and is arranged to guide the glue solution to flow to the rotating roller from the glue discharging pipe; the upper edge of the guide plate is arranged right below the output port of the glue discharging pipe at intervals; the lower edge of the guide plate is close to one side, close to the glue discharging pipe, of the rotating roller and forms a glue flowing slit with the cylindrical surface of the rotating roller. By means of the primary defoaming effect and the secondary defoaming effect, bubbles in a glue solution flowing to a base material are effectively eliminated, the problem that aerogel is not evenly distributed due to the fact that the bubbles exist in the glue solution is solved, columnar liquid flow can be converted into a waterfall shape, and therefore it is guaranteed that the glue solution evenly falls on the base material, and the quality of aerogel is improved. And the bonding uniformity of the glue solution and the base material is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to aerogel composition preparation frock technical field, concretely relates to a defoaming device for base material gel. BACKGROUND

[0002] When aerogel composition (for example, aerogel felt) is prepared by using real-time gel process, sol glue solution flows out to base material (for example, fiber felt or foam) through glue delivery pipe, and then gel is carried out on the base material.In this process, air bubbles are easily introduced when the glue solution flows, and the glue solution with air bubbles gels on the base material, and due to insufficient glue solution at the position of air bubbles, it will cause uneven gel structure, and ultimately lead to uneven distribution of aerogel in the aerogel composition.

[0003] Therefore, it is necessary to study a defoaming device for base material gel. UTILITY MODEL CONTENTS

[0004] Therefore, the purpose of the utility model is to provide a defoaming device for base material gel, which can effectively solve the problem of uneven distribution of aerogel caused by air bubbles in glue solution.

[0005] To achieve the above purpose, the technical scheme adopted by the utility model is:

[0006] A defoaming device for base material gel, comprising a conveying belt mechanism for conveying base material and a glue delivery pipe for discharging glue solution towards the conveying belt mechanism, further comprising a rotating roller and a flow guide mechanism, the flow guide mechanism being connected to the glue delivery pipe;

[0007] The rotating roller is rotatably arranged above the conveying belt mechanism;

[0008] The conveying surface of the conveying belt mechanism and the rotating roller form a gap for the base material to pass through;

[0009] The flow guide mechanism comprises a flow guide plate, the flow guide plate being fixedly arranged obliquely relative to the glue delivery pipe and being arranged to guide the glue solution to flow from the glue delivery pipe to the rotating roller;

[0010] The upper edge of the flow guide plate is arranged immediately below the output port of the glue delivery pipe;

[0011] The lower edge of the flow guide plate is adjacent to the side of the rotating roller close to the glue delivery pipe, and a glue flow gap is formed between the lower edge and the cylindrical surface of the rotating roller.

[0012] Further, the flow guide mechanism further comprises a mounting plate and a connecting plate, the mounting plate being horizontally arranged on the glue delivery pipe, and the connecting plate being fixedly connected between the mounting plate and the upper edge of the flow guide plate to hang the flow guide plate below the glue delivery pipe.

[0013] Further, the mounting plate, the connecting plate and the flow guide plate are an integrated bending structure.

[0014] Further, the glue discharging pipes, mounting plates, connecting plates and flow guide plates are arranged in multiple groups along the axial direction of the rotating roller.

[0015] Further, the lower edge of the flow guide plate is sawtooth-shaped.

[0016] Further, the two sides of the conveying belt mechanism are provided with racks, and the two ends of the rotating roller are rotatably arranged on the racks; at least one end of the rotating roller is in transmission connection with the driving member and faces the flow guide plate.

[0017] Further, the height of the gap is smaller than the thickness of the substrate, and the turning direction of the conveying belt mechanism is opposite to that of the rotating roller.

[0018] The above technical solution has the following advantages:

[0019] The flow guide plate is fixedly arranged obliquely relative to the glue discharging pipe, the upper edge of the flow guide plate is arranged immediately below the output port of the glue discharging pipe and used for receiving the glue solution output from the glue discharging pipe; the upper edge of the flow guide plate is spaced apart from the output port of the glue discharging pipe, and when the glue solution flows out from the glue discharging pipe to the flow guide plate, the glue solution will impact on the flow guide plate, so that the air bubbles in the glue solution are shaken out or broken and escaped, thereby forming a preliminary defoaming effect.

[0020] The lower edge of the flow guide plate and the cylindrical surface of the rotating roller form a glue flow gap, when the glue solution flows along the flow guide plate to the rotating roller, the glue solution will be dispersed along the circumference of the rotating roller and flow down from the glue flow gap, so that the columnar liquid flow is converted into a waterfall shape, thereby uniformly falling on the substrate and improving the uniformity of the combination of the glue solution and the substrate.

[0021] The rotating roller is rotatably arranged above the conveying belt mechanism, which can on the one hand promote the glue solution to smoothly pass through the glue flow gap and ensure the smoothness and uniformity of the liquid flow, and on the other hand, can roll and press the glue solution passing through the glue flow gap, so that small air bubbles in the glue solution are broken and escaped, while large air bubbles are blocked and retained above the glue flow gap; at this time, the glue solution temporarily retained above the glue flow gap forms a temporary glue pool, and the large air bubbles will continuously float up in the glue pool and break by themselves when floating up to the liquid surface of the glue pool, thereby forming a secondary defoaming effect.

[0022] In summary, the preliminary defoaming effect and the secondary defoaming effect effectively eliminate the air bubbles in the glue solution flowing to the substrate, solve the problem of uneven distribution of aerogel caused by air bubbles in the glue solution, and can also convert the columnar liquid flow into a waterfall shape, thereby ensuring that the glue solution uniformly falls on the substrate and improving the uniformity of the combination of the glue solution and the substrate. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The utility model discloses a three-dimensional schematic view of the utility model;

[0024] Figure 2Another three-dimensional schematic view under another view angle of the utility model;

[0025] Figure 3 For Figure 2 The local enlarged view at A in the middle;

[0026] Figure 4 Another embodiment of the flow guide plate of the utility model.

[0027] The figure sign: 1 is conveying belt mechanism, 2 is discharging glue pipe, 3 is rotating roller, 4 is flow guide plate, 5 is glue flow slit, 6 is rack, 7 is mounting plate, 8 is connecting plate, 9 is base material. DETAILED DESCRIPTION

[0028] The utility model will be described in further detail below in combination with the drawings and specific embodiments:

[0029] Embodiment 1, this embodiment aims at providing a kind of base material gel defoaming device, it is mainly used for preparing, for example, aerogel felt aerogel composition, aiming at the problem that the bubble exists in glue solution and leads to uneven distribution of aerogel.

[0030] A kind of base material gel defoaming device, such as Figure 1 And Figure 2 , including the conveying belt mechanism 1 for conveying base material 9 and the discharging glue pipe 2 for discharging glue solution to conveying belt mechanism 1.Base material 9 can be coiled material, also can be sheet material, discharging glue pipe 2 is connected with existing glue solution conveying system, can control the period of discharge, when processing sheet base material 9, discharging period of discharging glue pipe 2, the speed of base material 9 conveying and the time of glue solution flowing to base material 9 are adjusted to be compatible, ensure that glue solution flows to base material 9 successfully.Discharging glue pipe 2 and conveying belt mechanism 1 mainly use prior art, its specific structure and working principle will not be repeated here.

[0031] Such as Figure 1 And Figure 2 , also include rotating roller 3 and flow guide mechanism.Rotating roller 3 is horizontally rotatably arranged on conveying belt mechanism 1, and is located below the output port of discharging glue pipe 2, specifically, the both sides of conveying belt mechanism 1 are provided with rack 6, and the both ends of rotating roller 3 are rotatably arranged on rack 6, to rotatably set rotating roller 3 above conveying belt mechanism 1.The gap for base material 9 to pass between the conveying surface of conveying belt mechanism 1 and rotating roller 3, in the embodiment, the gap is greater than the thickness of base material 9, and base material 9 does not directly contact with rotating roller 3, to ensure that base material 9 can be conveyed successfully.

[0032] The roller 3 is in transmission connection with the driving member at least at one end, so that the roller 3 can be driven to rotate. The roller 3 rotates towards the flow guide mechanism, which can facilitate the smooth flow of glue solution through the glue flow gap 5, and ensure the smoothness and uniformity of the flow. The driving member is not shown in the drawings. The driving member is a motor, which is in transmission connection with the roller 3 through a belt. The specific structure and working principle of the motor are known in the art. The purpose of the motor is to drive the roller 3 to rotate. Here, no further description is given.

[0033] The flow guide mechanism is connected to the glue discharge pipe 2. The flow guide mechanism includes a flow guide plate 4, which is fixedly arranged obliquely relative to the glue discharge pipe 2, and is used to guide the glue solution to flow from the glue discharge pipe 2 to the roller 3. Specifically, the flow guide mechanism further includes a mounting plate 7 and a connecting plate 8. The mounting plate 7 is horizontally arranged on the glue discharge pipe 2. The connecting plate 8 is fixedly connected between the mounting plate 7 and the upper edge of the flow guide plate 4, so as to hang the flow guide plate 4 below the glue discharge pipe 2. The mounting plate 7, the connecting plate 8 and the flow guide plate 4 are an integrated bending structure. The upper edge of the flow guide plate 4 is arranged below the outlet of the glue discharge pipe 2, and is used to receive the glue solution output from the glue discharge pipe 2. The upper edge of the flow guide plate 4 is spaced apart from the outlet of the glue discharge pipe 2. When the glue solution flows out of the glue discharge pipe 2 and hits the flow guide plate 4, the bubbles in the glue solution are shaken out or broken out, thereby forming a preliminary defoaming effect.

[0034] As shown in Figure 3 , the lower edge of the flow guide plate 4 and the cylindrical surface of the roller 3 form a glue flow gap 5. When the glue solution flows along the flow guide plate 4 to the roller 3, the glue solution is dispersed along the circumference of the roller 3, and flows down from the glue flow gap 5, so that the columnar flow is converted into a waterfall shape, thereby uniformly falling on the substrate 9, and improving the uniformity of the combination of the glue solution and the substrate 9. In addition, when the glue solution passes through the glue flow gap 5, the roller 3 will roll the glue solution, so that small bubbles in the glue solution are broken out, or large bubbles are blocked and retained above the glue flow gap 5. At this time, the glue solution temporarily retained above the glue flow gap 5 forms a temporary glue pool. The large bubbles will continuously float up in the glue pool, and will be broken when they float to the surface of the glue pool, thereby forming a secondary defoaming effect, and further eliminating the bubbles in the glue solution.

[0035] In this embodiment, the glue discharge pipe 2, the mounting plate 7, the connecting plate 8 and the flow guide plate 4 are arranged in two or more groups along the axis of the roller 3, so as to simultaneously process multiple groups of substrates 9 transported side by side, thereby improving the production efficiency.

[0036] In example 2, the embodiment is basically the same as example 1, except that the lower edge of the flow guide plate 4 is sawtooth-shaped. Figure 4 The sawtooth-shaped lower edge of the flow guide plate 4 divides the glue solution flow into multiple small streams, so that the glue solution is more uniformly distributed.

[0037] Example 3, which is basically the same as Example 1, differs in that the gap height between the conveying surface of the conveying belt mechanism 1 and the rotating roller 3 is less than the thickness of the base material 9, so that the rotating roller 3 forms a pressing effect on the base material 9, which can further flatten the glue solution on the surface of the base material 9, so that the glue solution is more evenly distributed. The turning of the conveying belt mechanism 1 needs to be opposite to the turning of the rotating roller 3 to ensure that the base material 9 can smoothly pass through the gap, such as Figure 1 in which the conveying belt mechanism 1 rotates counterclockwise to transport the base material 9 from right to left, and the rotating roller 3 rotates clockwise to avoid hindering the base material 9.

Claims

1. A defoaming device for substrate gel, comprising a conveyor belt mechanism (1) for conveying a substrate (9) and a discharge pipe (2) for discharging adhesive towards the conveyor belt mechanism (1), characterized in that: It also includes a rotating roller (3) and a flow guiding mechanism, which is connected to the glue discharge pipe (2). The rotating roller (3) is rotatably positioned above the conveyor belt mechanism (1); A gap is formed between the conveying surface of the conveyor belt mechanism (1) and the rotating roller (3) for the substrate (9) to pass through; The flow guiding mechanism includes a flow guiding plate (4), which is fixedly inclined relative to the glue discharge pipe (2) and is configured to guide the glue liquid from the glue discharge pipe (2) to the roller (3). The upper edge of the guide plate (4) is positioned directly below the outlet of the glue discharge pipe (2); The lower edge of the guide plate (4) is close to the side of the roller (3) near the glue discharge pipe (2), and forms a glue flow slit (5) between it and the cylindrical surface of the roller (3).

2. The defoaming device for substrate gel according to claim 1, characterized in that: The flow guiding mechanism also includes an installation plate (7) and a connecting plate (8). A horizontal installation plate (7) is fixedly installed on the discharge pipe (2). A connecting plate (8) is fixedly connected between the installation plate (7) and the upper edge of the flow guiding plate (4) so ​​that the flow guiding plate (4) is suspended and arranged directly below the discharge pipe (2).

3. The defoaming device for substrate gel according to claim 2, characterized in that: The mounting plate (7), connecting plate (8) and guide plate (4) are an integrated bent structure.

4. The defoaming device for substrate gel according to claim 3, characterized in that: The discharge pipe (2), mounting plate (7), connecting plate (8) and guide plate (4) are arranged in multiple sets along the axial direction of the roller (3).

5. A defoaming device for substrate gel according to any one of claims 1-4, characterized in that: The lower edge of the guide plate (4) is serrated.

6. A defoaming device for substrate gel according to any one of claims 1-4, characterized in that: The conveyor belt mechanism (1) is provided with frames (6) on both sides, and the two ends of the roller (3) are respectively rotatably mounted on the frames (6); at least one end of the roller (3) is connected to the drive component and rotates toward the guide plate (4).

7. A defoaming device for substrate gel according to any one of claims 1-4, characterized in that: The height of the gap is less than the thickness of the substrate (9), and the direction of the conveyor belt mechanism (1) is opposite to that of the roller (3).

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