Epoxy glue defoaming device

Abstract

The utility model discloses an epoxy glue bubble removing device, including the jar body, the top fixedly connected with the jar cover of jar body, the top fixed intercommunication of jar cover has pressure gauge, the bottom fixedly connected with T type inner fender of jar cover, the outer wall fixedly inlaid with two pinhole stainless steel net of T type inner fender, the outer wall of T type inner fender is equipped with conical outer fender, the bottom of conical outer fender is equipped with through -hole, the bottom fixedly connected with the rack of jar body. The utility model on the basis of low pressure environment created by vacuumizing, introduce the mechanical shearing structure that constitutes by bubble triangle formula cut pole, can initiative break up the big -size bubble in the up floating, the refinement of bubble and elimination process are accelerated significantly, through the composite resistance backflow structure that conical outer fender, T type inner fender and double -deck pinhole stainless steel net constitute, the violent boiling and spatter of colloid under the negative pressure are effectively checked, and the vacuum pipeline is protected.

Description

Technical Field

[0001] This utility model relates to the field of epoxy adhesive production technology, and in particular to an epoxy adhesive defoaming device. Background Technology

[0002] Epoxy adhesive is a high-performance thermosetting adhesive formed by the reaction of epoxy resin and curing agent. It has advantages such as strong adhesion, low shrinkage, chemical corrosion resistance and good electrical insulation, and is widely used in electronic packaging, composite materials, precision component bonding and other fields. During the processing, air bubbles can easily be mixed in due to stirring, mixing, pouring or environmental factors. If defoaming treatment is not performed, the bubbles will remain in the adhesive layer after curing, leading to voids, stress concentration, decreased dielectric properties, appearance defects and even structural failure in the product. Therefore, defoaming treatment is necessary to ensure the performance stability and application reliability of epoxy adhesive.

[0003] Currently, the main methods for defoaming epoxy adhesives are as follows: First, natural defoaming by standing, which involves placing the mixed adhesive in a container and allowing the bubbles to slowly rise and escape due to gravity and surface tension; second, vacuum defoaming, which involves placing the adhesive in a sealed container and reducing the ambient pressure to cause the bubbles to expand and burst; and third, centrifugal defoaming, which uses the centrifugal force generated by high-speed rotation to drive the bubbles toward the center or edge of the adhesive to achieve separation.

[0004] However, the existing operating methods mentioned above all have obvious shortcomings: static defoaming takes a long time (usually several hours), is inefficient, and is almost ineffective for high-viscosity epoxy adhesives; traditional vacuum defoaming devices cause the adhesive to expand violently in the early stage of vacuuming, which can easily lead to overflow or even contamination of the vacuum pump; centrifugal methods are expensive, have limited defoaming effect on viscous adhesives, and may introduce new air bubbles due to excessive shear force. Therefore, we propose an epoxy adhesive defoaming device to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing an epoxy resin defoaming device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An epoxy resin defoaming device includes a tank body, a tank lid fixedly connected to the top of the tank body, a pressure gauge fixedly connected to the top of the tank lid, a T-shaped inner baffle fixedly connected to the bottom of the tank lid, two fine-mesh stainless steel meshes fixedly embedded in the outer wall of the T-shaped inner baffle, a conical outer baffle fitted on the outer wall of the T-shaped inner baffle, the top of the conical outer baffle being fixedly connected to the bottom of the tank lid, a through hole being opened at the bottom of the conical outer baffle, a frame fixedly connected to the bottom of the tank body, a geared motor fixedly connected to the top of the frame, a vertical shaft fixedly connected to the top of the output shaft of the geared motor, and a defoaming assembly inside the tank body.

[0008] Preferably, the defoaming assembly includes multiple stirring blades, a U-shaped sealing element is fixedly sleeved on the outer wall of the vertical shaft, two silicone scrapers are fixedly connected to the inner wall of the U-shaped sealing element, the outer wall of the vertical shaft is fixedly connected to one end of the multiple stirring blades, and two bubble triangular cutters are fixedly connected between the vertical shaft and the U-shaped sealing element. The sharp edges of the bubble triangular cutters can shear and break larger bubbles into smaller sizes.

[0009] Preferably, a negative pressure pipe is fixedly connected to the top of the tank lid, and a vacuum pump is fixedly connected to one end of the negative pressure pipe. An existing three-way solenoid valve is added to the outer wall of the negative pressure pipe for subsequent air intake to restore the pressure inside the tank to normal.

[0010] Preferably, the outer wall of the tank is fixedly connected to an epoxy resin inlet pipe, and the bottom of the tank is fixedly connected to three legs, which provide stable support and can evenly distribute the weight of the tank and the resin inside to the ground.

[0011] Preferably, the bottom of the tank is provided with a circular hole, and the inner wall of the circular hole is rotatably connected to the outer wall of the output shaft of the geared motor.

[0012] Preferably, an epoxy resin discharge pipe is fixedly connected to the bottom of the tank, and a ball valve is fixedly sleeved on the outer wall of the epoxy resin discharge pipe. When the ball valve is opened, the epoxy resin discharge pipe can smoothly discharge the resin by its own weight, reducing the residue in the tank.

[0013] Compared with the prior art, the advantages of this utility model are:

[0014] This solution, based on the low-pressure environment created by vacuuming, introduces a mechanical shearing structure composed of bubble-cutting triangular rods, which can actively break up large bubbles floating in the air, significantly accelerating the bubble refinement and elimination process. A composite backflow prevention structure composed of a conical outer baffle, a T-shaped inner baffle, and a double-layer fine-pore stainless steel mesh effectively curbs the violent boiling and splashing of the colloid under negative pressure, protecting the vacuum pipeline. Simultaneous rotation of the U-shaped sealing element equipped with a silicone scraper continuously cleans the tank wall, preventing colloid adhesion and promoting bubble detachment, thus improving the defoaming efficiency and quality of the epoxy adhesive and avoiding material loss and equipment contamination. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of an epoxy adhesive defoaming device proposed in this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of an epoxy adhesive defoaming device proposed in this utility model;

[0018] Figure 3 This is a partial cross-sectional three-dimensional structural diagram of an epoxy adhesive defoaming device proposed in this utility model.

[0019] In the diagram: 1. Tank body; 2. Tank lid; 3. Pressure gauge; 4. Negative pressure pipe; 5. T-shaped inner baffle; 6. Fine-mesh stainless steel mesh; 7. Conical outer baffle; 8. Through hole; 9. Epoxy glue feed pipe; 10. Gear motor; 11. Vertical shaft; 12. U-shaped edge sealing piece; 13. Silicone scraper; 14. Agitator blade; 15. Bubble triangular cutter; 16. Epoxy glue discharge pipe; 17. Legs. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] Depend on Figures 1-3 As shown, an epoxy resin defoaming device is disclosed, comprising a tank 1, with a tank cover 2 fixedly connected to the top of the tank 1 by existing clamps. A pressure gauge 3 is fixedly connected to the top of the tank cover 2, which can monitor the negative pressure state inside the tank 1 in real time. A negative pressure pipe 4 is fixedly connected to the top of the tank cover 2, and a vacuum pump is fixedly connected to one end of the negative pressure pipe 4. The negative pressure pipe 4 can quickly discharge the air and escaped gas bubbles from the tank, creating a low-pressure environment for epoxy resin defoaming. Its pipeline design is adapted to the pumping flow rate of the vacuum pump, and with the anti-splash structure inside the tank, it can prevent the resin from entering the pipeline and contaminating the vacuum pump, thus ensuring the service life of the equipment.

[0022] A T-shaped inner baffle 5 is fixedly connected to the bottom of the can lid 2. The bottom of the T-shaped inner baffle 5 can block the liquid flow that splashes upward due to the violent expansion of the colloid during the initial stage of vacuum defoaming, and prevent the colloid from directly contacting the negative pressure pipe 4. Two fine-hole stainless steel meshes 6 are fixedly embedded in the outer wall of the T-shaped inner baffle 5. A conical outer baffle 7 is fitted on the outer wall of the T-shaped inner baffle 5. The top of the conical outer baffle 7 is fixedly connected to the bottom of the can lid 2. The conical structure of the conical outer baffle 7 can guide the splashed colloid backflow. A through hole 8 is opened at the bottom of the conical outer baffle 7. The through hole 8 allows the colloid that slides down the conical inner wall to flow smoothly back to the bottom of the can body 1 through the through hole 8.

[0023] An epoxy resin feed pipe 9 is fixedly connected to the outer wall of the tank body 1. The epoxy resin feed pipe 9 can achieve stable feeding of the resin by connecting to an external diaphragm pump, avoiding the introduction of new air bubbles by manual feeding. Three legs 17 are fixedly connected to the bottom of the tank body 1.

[0024] A frame is fixedly connected to the bottom of the tank body 1, and a geared motor 10 is fixedly connected to the top of the frame. A circular hole is opened at the bottom of the tank body 1, and the inner wall of the circular hole is rotatably connected to the outer wall of the output shaft of the geared motor 10. A vertical shaft 11 is fixedly connected to the top of the output shaft of the geared motor 10.

[0025] The tank 1 is equipped with a defoaming component, which includes multiple stirring blades 14. A U-shaped sealing member 12 is fixedly fitted on the outer wall of the vertical shaft 11. Two silicone scrapers 13 are fixedly connected to the inner wall of the U-shaped sealing member 12. The outer wall of the vertical shaft 11 is fixedly connected to one end of the multiple stirring blades 14.

[0026] Two bubble-cutting triangular rods 15 are fixedly connected between the vertical shaft 11 and the U-shaped sealing part 12. The sharp edges of the bubble-cutting triangular rods 15 can shear large bubbles in the tank during rotation and break them into small bubbles. Small bubbles are more likely to expand and burst in a vacuum environment, improving defoaming efficiency. An epoxy resin discharge pipe 16 is fixedly connected to the bottom of the tank 1. A ball valve is fixedly sleeved on the outer wall of the epoxy resin discharge pipe 16. When the ball valve is opened, the epoxy resin discharge pipe 16 can smoothly discharge the material by utilizing the weight of the resin, reducing residue in the tank.

[0027] Working principle: When using epoxy adhesive to remove bubbles, the mixed epoxy adhesive is first injected into the tank 1 through the existing diaphragm pump via the epoxy adhesive feed pipe 9. Then, the vacuum pump is started and the tank 1 is evacuated through the negative pressure pipe 4. The pressure gauge 3 monitors the negative pressure status inside the tank in real time.

[0028] Under negative pressure, the bubbles in the epoxy resin expand rapidly and rise. At this time, the geared motor 10 drives the vertical shaft 11 to rotate, which drives multiple stirring blades 14 to gently stir the colloid to promote the release of bubbles. At the same time, the U-shaped sealing element 12 rotates synchronously with the vertical shaft 11. The two silicone scrapers 13 fixed on its inner wall rotate closely against the inner wall of the tank 1 to prevent the colloid from sticking to the wall and to help the bubbles gather towards the center area. The two bubble triangular cutting rods 15 fixed between the vertical shaft 11 and the U-shaped sealing element 12 have sharp edges that can cut and break larger bubbles into smaller sizes.

[0029] During the rupture process of the expanded colloid, the bubble film first impacts the conical outer baffle 7, and is then blocked by the T-shaped inner baffle 5. The two fine-pore stainless steel meshes 6 further block the flow. The colloid then flows to the inner wall of the conical outer baffle 7 and forms a buffer backflow through the bottom through hole 8, effectively inhibiting the colloid from splashing into the negative pressure pipe 4 due to violent boiling.

[0030] After defoaming is completed, open the ball valve on the epoxy resin discharge pipe 16 to discharge the defoamed epoxy resin from the bottom of the tank 1. The entire process is stably driven by the geared motor 10 supported by the frame through the output shaft passing through the round hole at the bottom of the tank 1. The three legs 17 ensure the overall stable operation of the equipment.

[0031] It should be noted that, in actual use, an existing PLC controller can be added. The PLC controller is electrically connected to the geared motor 10, vacuum pump, diaphragm pump, and three-way solenoid valve to facilitate overall control.

[0032] All standard parts used in this utility model can be purchased from the market. Irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. Furthermore, the structure and principle of the components known to those skilled in the art can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0033] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An epoxy resin defoaming device, comprising a tank (1), characterized in that, The top of the tank body (1) is fixedly connected to a tank cover (2), and a pressure gauge (3) is fixedly connected to the top of the tank cover (2). A T-shaped inner baffle (5) is fixedly connected to the bottom of the tank cover (2). Two fine-hole stainless steel meshes (6) are fixedly embedded in the outer wall of the T-shaped inner baffle (5). A conical outer baffle (7) is fitted on the outer wall of the T-shaped inner baffle (5). The top of the conical outer baffle (7) is fixedly connected to the bottom of the tank cover (2). A through hole (8) is opened at the bottom of the conical outer baffle (7). A frame is fixedly connected to the bottom of the tank body (1). A geared motor (10) is fixedly connected to the top of the frame. A vertical shaft (11) is fixedly connected to the top of the output shaft of the geared motor (10). A defoaming assembly is provided inside the tank body (1).

2. The epoxy resin defoaming device according to claim 1, characterized in that, The defoaming assembly includes multiple stirring blades (14), and a U-shaped sealing member (12) is fixedly sleeved on the outer wall of the vertical shaft (11). Two silicone scrapers (13) are fixedly connected to the inner wall of the U-shaped sealing member (12). The outer wall of the vertical shaft (11) is fixedly connected to one end of the multiple stirring blades (14), and two bubble triangular cutters (15) are fixedly connected between the vertical shaft (11) and the U-shaped sealing member (12).

3. The epoxy resin defoaming device according to claim 1, characterized in that, The top of the can lid (2) is fixedly connected to a negative pressure pipe (4), and one end of the negative pressure pipe (4) is fixedly connected to a vacuum pump.

4. The epoxy resin defoaming device according to claim 1, characterized in that, The outer wall of the tank (1) is fixedly connected to an epoxy resin feed pipe (9), and the bottom of the tank (1) is fixedly connected to three legs (17).

5. The epoxy resin defoaming device according to claim 1, characterized in that, The bottom of the tank (1) is provided with a circular hole, and the inner wall of the circular hole is rotatably connected to the outer wall of the output shaft of the geared motor (10).

6. The epoxy resin defoaming device according to claim 1, characterized in that, The bottom of the tank (1) is fixedly connected to an epoxy resin discharge pipe (16), and a ball valve is fixedly sleeved on the outer wall of the epoxy resin discharge pipe (16).

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