Polaroid water-based waste glue drying equipment

Abstract

The polaroid water-based waste glue drying equipment comprises a drying device, an electric lifting device and a collecting device, the drying device comprises a box body, a bottom groove and a heating device, and the electric lifting device is fixedly connected with the bottom of the bottom groove through a fixing anchor point and used for controlling opening and closing of the bottom groove; and the collecting device is used for collecting the dried water-based waste glue. By arranging the electric lifting device, automatic opening and closing of the bottom groove of the water-based waste glue drying device can be achieved, manpower cost does not need to be consumed, and safety, environment friendliness and high efficiency are achieved.

Description

Technical Field

[0001] This application relates to the technical field of polarizer processing equipment, specifically to a polarizer water-based waste glue drying equipment. Background Technology

[0002] Polarizing films are important optical materials widely used in liquid crystal displays (LCDs), organic light-emitting diode displays (OLEDs), and other optical display devices. Their basic structure consists of multiple layers, the core of which is a polyvinyl alcohol (PVA) layer, which polarizes light. However, PVA layers are highly susceptible to hydrolysis and environmental influences; therefore, protective films are typically applied to both sides of the PVA layer to protect its physical properties. Adhesive is used to ensure adhesion between the protective film and the PVA layer. With increasingly stringent environmental policies, traditional oil-based adhesives are gradually being replaced by water-based adhesives due to their poor environmental performance. Water-based adhesives not only comply with national environmental policies and regulations but also ensure the sustainable development of the adhesive industry.

[0003] Water-based adhesives, commonly known as water-based glues, are used to bond PVA layers to protective films. They are primarily composed of PVA powder and water, with water comprising over 95%. In addition, PVA contains approximately 5% methanol and about 1% acetone, both of which are toxic chemicals. The mixing process generates a large amount of waste adhesive, which is classified as hazardous waste. In the field of hazardous waste treatment, the disposal of water-based waste adhesives with a water content as high as 95% has always been a challenge.

[0004] Traditional water-based waste adhesive drying equipment typically uses bolts to secure the bottom tank to the drying chamber to ensure a sealed negative pressure environment during operation. Once the waste adhesive is dried, the bottom tank is removed from the drying chamber to remove the dried adhesive. This connection method generally requires up to 20 bolts, making the disassembly process extremely cumbersome. Furthermore, the total weight of the dried waste adhesive and the bottom tank is close to or exceeds 200 kg, requiring multiple people to perform the disassembly simultaneously. This method is not only inefficient but also poses significant safety risks, such as crushing injuries and impact injuries. In addition, the liquid adhesive inside the bottom tank is prone to leakage during disassembly, further increasing the operational safety risks.

[0005] In actual production, the treatment of water-based waste adhesives is not only related to environmental protection, but also directly affects the production costs and work efficiency of enterprises. Traditional treatment methods not only pose safety risks, but may also lead to secondary pollution from the waste adhesives, increasing the environmental burden on enterprises. Therefore, developing a safe, efficient, and environmentally friendly water-based waste adhesive drying equipment is of great significance for improving production efficiency, reducing safety risks, and minimizing environmental pollution. Summary of the Invention

[0006] The technical problem to be solved by this application is to provide a safe, efficient and environmentally friendly water-based waste glue drying device.

[0007] To solve the above-mentioned technical problems, this application can be implemented through the following technical solutions:

[0008] This application provides a drying device for water-based waste adhesive from polarizers, including...

[0009] A drying device, comprising a box body, a bottom trough, and a heating device, wherein the bottom trough is connected to the bottom of the box body via a rotating connection, the heating device is located inside the box body, and the top of the box body is also provided with an exhaust gas discharge channel.

[0010] An electric lifting device is fixedly connected to the bottom of the trough via a fixed anchor point and is used to control the opening and closing of the trough.

[0011] Collection device, the collection device being used to collect dried water-based waste adhesive;

[0012] Wherein: the bottom groove rotates around the rotating connecting part between a first position and a second position;

[0013] When the bottom groove is in the first position, the bottom groove and the bottom edge of the box body form a closed structure to support the water-based waste glue or dried water-based waste glue inside the box body.

[0014] When the bottom trough is in the second position, the end of the bottom trough away from the rotating connection part rotates and opens outwards towards the outside of the box body, allowing the dried water-based waste glue inside the box body to fall through the opening between the bottom trough and the box body.

[0015] As a further improvement to this application, the shape of the box body is any one of a cube, cuboid, cylinder, or cone.

[0016] As a further improvement of this application, when the shape of the box body is a cube or cuboid, the rotating connection part is a hinge structure.

[0017] As a further improvement of this application, the rotating connection part includes a hinge, which is used to connect the bottom groove to the box body. One side of the hinge is fixed to the bottom edge of the box body, and the other side of the hinge is fixed to one side edge of the bottom groove. The hinge is rotatably connected by a pivot pin.

[0018] As a further improvement of this application, the rotating connection part includes a rotating shaft disposed at the bottom of the box body and a shaft hole disposed at the corresponding position of the bottom groove, the rotating shaft and the shaft hole being clearance-fitted so that the bottom groove can rotate relative to the box body around the rotating shaft; or;

[0019] The rotating connection includes a shaft hole at the bottom of the box body and a rotating shaft at the corresponding position of the bottom groove. The rotating shaft and the shaft hole are fitted with a clearance, so that the bottom groove can rotate relative to the box body around the rotating shaft.

[0020] As a further improvement of this application, a locking structure is provided between the edge of the bottom groove away from the rotating connection and the bottom of the box body.

[0021] As a further improvement of this application, the locking structure includes a locking hook and a locking buckle. The locking hook is fixed to the box body, one end of the locking buckle is hinged to one side edge of the bottom groove, and the other end of the locking buckle can be engaged with the locking hook.

[0022] As a further improvement of this application, the electric lifting device includes a support device and an electric hoist mounted on the support device. The support device includes a crossbeam and a column for supporting the crossbeam, and the electric hoist is fixed to the crossbeam.

[0023] As a further improvement of this application, the crossbeam is provided with a horizontally extending track, the electric hoist is fixed to the track, and can slide horizontally along the track.

[0024] As a further improvement of this application, the bottom groove is a concave arc-shaped structure.

[0025] As a further improvement of this application, the box body is also provided with a water-based waste glue recycling pipe, which is connected to a pneumatic pump. The pneumatic pump recovers the liquid portion of the dried water-based waste glue and pumps it back into the feed port of the drying device.

[0026] The beneficial effects of this application are as follows: The polarizer water-based waste adhesive drying equipment provided in this application, by incorporating an electric lifting device, enables automatic opening and closing of the bottom tank of the water-based waste adhesive drying equipment. This reduces manual operation, significantly shortens the opening and closing time of the bottom tank, improves production efficiency, and avoids accidents such as crushing or bruising caused by insufficient manpower. Simultaneously, the electric lifting device prevents leakage of water-based waste adhesive during manual operation, ensuring a safe operating environment.

[0027] Furthermore, this application reduces environmental pollution during waste adhesive treatment through the waste gas collection pipeline, thus meeting environmental protection requirements. The installation of the water-based waste adhesive recycling pipeline and pneumatic pump further reduces secondary pollution from the waste adhesive, and the installation of the waste gas emission channel lowers waste gas emissions, complying with national environmental protection policies. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the polarizer water-based waste adhesive drying equipment in Example 1.

[0029] In the diagram: 1. Box body; 2. Bottom trough; 3. Exhaust gas emission channel; 4. Rotating connection; 5. Locking structure; 6. Electric hoist; 7. Crossbeam; 8. Column; 9. Collection device; 10. Fixed anchor point; 11. Universal swivel wheel. Detailed Implementation

[0030] The present application will now be described in detail with reference to the embodiments shown in the accompanying drawings. However, these embodiments do not limit the present application, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the scope of protection of this application.

[0031] This application provides a drying device for water-based waste adhesive from polarizers, including a drying unit, an electric lifting unit, and a collection unit, wherein:

[0032] The drying device includes a box body, a bottom trough, and a heating device. The heating device is located inside the box body. The top of the box body is also provided with an exhaust gas discharge channel. The bottom trough is connected to the bottom of the box body through a rotating connection part. The bottom trough rotates around the rotating connection part between a first position and a second position. Preferably, the heating device can be steam heating or electric heating, etc.

[0033] The electric lifting device is fixedly connected to the bottom of the trough via a fixed anchor point and is used to control the opening and closing of the trough; the collection device is used to collect the dried water-based waste glue.

[0034] When the bottom groove is in the first position, the bottom groove and the bottom edge of the box body form a closed structure to support the water-based waste glue or dried water-based waste glue inside the box body.

[0035] When the bottom trough is in the second position, the end of the bottom trough away from the rotating connection part rotates and opens outwards towards the outside of the box body, allowing the dried water-based waste glue inside the box body to fall through the opening between the bottom trough and the box body.

[0036] In an optional implementation, the shape of the box body is any one of a cube, cuboid, cylinder, or cone.

[0037] In an optional implementation, when the shape of the box body is a cube or cuboid, the rotating connection is a hinged structure.

[0038] In a further optional embodiment, the rotating connection includes a hinge for connecting the bottom groove to the box body. One side of the hinge is fixed to the bottom edge of the box body, and the other side of the hinge is fixed to one side edge of the bottom groove. The hinge achieves a rotating connection via a pin. The pin passes through the connecting part of the hinge, allowing the bottom groove to rotate relative to the box body around the pin. Preferably, the hinge is made of corrosion-resistant metal, and its connecting parts are reinforced to enhance load-bearing capacity, ensuring structural stability and rotational flexibility during the bottom groove's loading and rotation. Simultaneously, a sealing structure is provided at the hinge connection to prevent dust and debris from entering and affecting rotational performance. Furthermore, the hinge's rotation angle range is adapted to switch between the bottom groove's closed position supporting water-based waste adhesive and its dried state, and its open position for unloading. More preferably, one side of the hinge is integrally formed with the bottom edge of the box body, and the other side of the hinge is integrally formed with one side edge of the bottom groove. The hinge is formed with the box body by a full welding process, and the other side of the hinge is formed with one side edge of the bottom groove by a full welding process.

[0039] In a further optional embodiment, the rotating connection includes a rotating shaft disposed at the bottom of the box body and a shaft hole disposed at a corresponding position in the bottom groove. The rotating shaft and the shaft hole are clearance-fitted, allowing the bottom groove to rotate relative to the box body around the rotating shaft. Preferably, the box body is provided with a bearing seat for mounting the rotating shaft, and the rotating shaft is fixed to the bearing seat by a bearing to reduce rotational friction and improve structural stability. The inner wall of the shaft hole is provided with a wear-resistant bushing to prevent wear caused by long-term rotation. The bearing seat and the rotating shaft are made of high-strength metal material, and the bearing seat is integrally formed with the box body or fixed by welding or bolting to ensure sufficient strength and rigidity during the bottom groove's loading of items and rotation. The rotation angle range of the shaft hole fitting structure meets the switching requirements of the bottom groove between a closed first position for supporting water-based waste glue and dried water-based waste glue and an open second position for unloading. More preferably, the bearing seat is integrally formed with the box body. Preferably, the bearing seat and the box body are manufactured by a full welding process.

[0040] In a further optional embodiment, the rotating connection includes a shaft hole located at the bottom of the box body and a rotating shaft located at a corresponding position in the bottom groove. The rotating shaft and the shaft hole are clearance-fitted, allowing the bottom groove to rotate relative to the box body around the rotating shaft. A bearing seat is provided on the bottom groove, and the rotating shaft is fixed to the bearing seat by a bearing to reduce rotational friction and improve structural stability. A wear-resistant bushing is provided on the inner wall of the shaft hole to prevent wear caused by long-term rotation. The bearing seat and the rotating shaft are made of high-strength metal. The bearing seat is integrally formed with the box body or fixed by welding or bolting to ensure sufficient strength and rigidity during the bottom groove's loading and rotation. The rotation angle range of the shaft hole fit structure meets the switching requirements of the bottom groove between a closed first position for supporting water-based waste adhesive and dried water-based waste adhesive, and an open second position for unloading. More preferably, the bearing seat and the bottom groove are integrally formed. Preferably, the bearing seat and the bottom groove are manufactured using a full welding process.

[0041] In an optional implementation, a locking structure is provided between the side edge of the bottom groove away from the rotating connection and the bottom of the box body.

[0042] In a further optional embodiment, the locking structure includes a hook and a latch. The hook is fixed to the box body, one end of the latch is hinged to one side edge of the bottom groove, and the other end of the latch can engage with the hook. Preferably, the hook and the box body are integrally formed. Preferably, the hook and the box body are manufactured using a full welding process. When the latch engages with the hook, the bottom groove is in a first position, and the bottom groove and the bottom edge of the box body form a closed structure.

[0043] In an optional embodiment, the electric lifting device includes a support device and an electric hoist mounted on the support device. The support device includes a crossbeam and a column for supporting the crossbeam, and the electric hoist is fixed to the crossbeam. Further, the crossbeam has a horizontally extending track, and the electric hoist is fixed to the track and can slide horizontally along the track. The support crossbeam and track support and guide the bottom groove, and the support crossbeam can be made of steel plate with a thickness greater than 3mm.

[0044] In an optional implementation, the bottom trough is a concave arc-shaped structure, which facilitates the collection of dried water-based waste adhesive.

[0045] In an optional implementation, the collection device is a collection trolley with at least four omnidirectional casters at the bottom to facilitate movement of the collection trolley. The highest point of the collection trolley is 5-10 mm lower than the lowest height of the bottom trough after opening.

[0046] This application also provides a specific embodiment, as follows:

[0047] Example 1

[0048] like Figure 1 As shown, this embodiment provides a drying device for water-based waste adhesive from polarizing films, including a drying unit, an electric lifting unit, and a collection unit 9, wherein:

[0049] The drying device includes a box body 1, a bottom groove 2, and a heating device (not shown in the figure). The box body 1 is a cuboid structure. The heating device is located inside the box body 1. The top of the box body 1 is also provided with an exhaust gas discharge channel 3. One side edge of the bottom groove 2 is connected to the bottom of the box body 1 through a rotating connection part 4. The bottom groove 2 can rotate around the rotating connection part 4 between a first position and a second position. A locking structure 5 is provided between the side edge of the bottom groove 2 away from the rotating connection part 4 and the bottom of the box body 1. The locking structure 5 includes a locking hook and a locking buckle. The locking hook is fixed to the box body 1 and is integrally formed with the box body 1. One end of the locking buckle is hinged to one side edge of the bottom groove 2, and the other end of the locking buckle can be engaged with the locking hook.

[0050] The electric lifting device includes a support device and an electric hoist 6 mounted on the support device. The support device includes a crossbeam 7 and a column 8 for supporting the crossbeam 7. A horizontally extending track is provided on the crossbeam 7. The electric hoist 6 is fixed to the track and can slide horizontally along the track. The wire rope released by the electric hoist 6 is fixedly connected to the bottom of the trough 2 through a fixed anchor point 10 for controlling the opening and closing of the trough 2. The fixed anchor point 10 is located in the middle of the bottom of the trough 2 and is integrally formed with the trough 2. The fixed anchor point 10 is welded to the middle of the bottom of the trough 2 using a full welding process. The load capacity of the electric hoist 6 should be 300–500 kg, the wire rope length should be greater than 10 m, and the power should be greater than 1800 W. Preferably, the wire rope is connected to the fixed anchor point 10 through a hook, and the diameter of the hole in the fixed anchor point 10 is 2–3 times the diameter of the wire rope hook.

[0051] The collection device 9 is a collection trolley. The bottom of the collection trolley is equipped with four omnidirectional casters 11 at the four corners of the bottom groove 2 of the collection trolley. The collection trolley is used to collect dried water-based waste glue.

[0052] The specific opening and closing method of the polarizer water-based waste adhesive drying equipment in this embodiment is as follows: When the bottom trough 2 is in the first position, the bottom trough 2 and the bottom edge of the box body 1 form a closed structure. At this time, the drying device continuously collects water-based waste adhesive and dries it. When the drying device operates to a certain extent, the closed structure formed by the box body 1 and the bottom trough 2 carries a lot of dried water-based waste adhesive, and the closed structure needs to be cleaned.

[0053] First, move the collecting trolley directly below the bottom trough 2. Then, move the electric hoist 6 along the track to a position directly opposite the fixed anchor point 10 below the bottom trough 2. Release the wire rope of the electric hoist 6, securing the end of the wire rope to the fixed anchor point 10. At this point, the straight line connecting the wire rope and the fixed anchor point 10 is perpendicular to the crossbeam 7, and the wire rope supports the bottom trough 2. Open the latch and control the electric hoist 6 to continue releasing the wire rope, slowly controlling the end of the bottom trough 2 away from the rotating connection part 4 to rotate and open outwards towards the box body 1, placing the bottom trough 2 in the second position. At this time, the dried water-based waste glue inside the box body 1 falls through the opening between the bottom trough 2 and the box body 1, and the collecting trolley collects the dried water-based waste glue. After the dried water-based waste glue is collected, control the wire rope of the electric hoist 6 to lift the bottom trough 2, returning it from the second position to the first position, and secure the latch to the hook, then retract the wire rope. The drying device then collects the water-based waste glue again and dries it.

[0054] It should be noted that the above description is only for explaining the preferred embodiments of this application and is not intended to limit this application in any way. Therefore, any modifications or changes made to this application under the same inventive spirit should still be included within the scope of protection intended by this application.

Claims

1. A drying device for water-based waste adhesive from polarizing films, characterized in that, include A drying device, comprising a box body, a bottom trough, and a heating device, wherein the bottom trough is connected to the bottom of the box body via a rotating connection, the heating device is located inside the box body, and the top of the box body is also provided with an exhaust gas discharge channel. An electric lifting device is fixedly connected to the bottom of the trough via a fixed anchor point and is used to control the opening and closing of the trough. Collection device, the collection device being used to collect dried water-based waste adhesive; Wherein: the bottom groove rotates around the rotating connecting part between a first position and a second position; When the bottom groove is in the first position, the bottom groove and the bottom edge of the box body form a closed structure to support the water-based waste glue or dried water-based waste glue inside the box body. When the bottom trough is in the second position, the end of the bottom trough away from the rotating connection part rotates and opens outwards towards the outside of the box body, allowing the dried water-based waste glue inside the box body to fall through the opening between the bottom trough and the box body.

2. The polarizer water-based waste adhesive drying equipment according to claim 1, characterized in that, The shape of the box body can be any one of a cube, cuboid, cylinder, or cone.

3. The polarizer water-based waste adhesive drying equipment according to claim 2, characterized in that, When the shape of the box body is a cube or cuboid, the rotating connection part is a hinge structure.

4. The polarizer water-based waste adhesive drying equipment according to claim 3, characterized in that, The rotating connection includes a hinge, which connects the bottom groove to the box body. One side of the hinge is fixed to the bottom edge of the box body, and the other side of the hinge is fixed to one side edge of the bottom groove. The hinge is rotatably connected by a pivot pin.

5. The polarizer water-based waste adhesive drying equipment according to claim 3, characterized in that, The rotating connection includes a rotating shaft disposed at the bottom of the box body and a shaft hole disposed at a corresponding position in the bottom groove. The rotating shaft and the shaft hole are clearance-fitted, so that the bottom groove can rotate relative to the box body around the rotating shaft; or; The rotating connection includes a shaft hole at the bottom of the box body and a rotating shaft at the corresponding position of the bottom groove. The rotating shaft and the shaft hole are fitted with a clearance, so that the bottom groove can rotate relative to the box body around the rotating shaft.

6. The polarizer water-based waste adhesive drying equipment according to claim 3, characterized in that, A locking structure is provided between the edge of the bottom groove away from the rotating connection and the bottom of the box body.

7. The polarizer water-based waste adhesive drying equipment according to claim 6, characterized in that, The locking structure includes a hook and a latch. The hook is fixed to the box body, one end of the latch is hinged to one side edge of the bottom groove, and the other end of the latch can be engaged with the hook.

8. The polarizer water-based waste adhesive drying equipment according to claim 1, characterized in that, The electric lifting device includes a support device and an electric hoist mounted on the support device. The support device includes a crossbeam and a column for supporting the crossbeam. The electric hoist is fixed to the crossbeam.

9. The polarizer water-based waste adhesive drying equipment according to claim 8, characterized in that, The crossbeam is provided with a horizontally extending track, and the electric hoist is fixed to the track and can slide horizontally along the track.

10. The polarizer water-based waste adhesive drying equipment according to claim 1, characterized in that, The bottom groove is a concave arc-shaped structure.

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