Polyurethane sealant melting device

Abstract

The utility model discloses a kind of polyurethane sealant melting devices, belong to polyurethane sealant melting technical field.The utility model includes base, outer box, inner box, rotary servo motor, closed cover structure, upper stirring structure, lower stirring structure, heating wire and discharge hopper, outer box is hinged through axle stem with the upper rear side of base inner wall, rotary servo motor is installed in the upper front of base through support, by setting outer box and base are hinged through axle stem, rotary servo motor is connected with outer box, so that outer box can be inclined, can utilize gravity to let sealant more smoothly flow out when discharging, upper stirring structure and lower stirring structure are staggered and set and counter-rotating, this unique stirring mode improves stirring melting effect, so that sealant can be evenly heated and fully mixed in melting process, effectively avoid the problem of larger local temperature difference, thereby improve the melting quality and performance stability of sealant.

Description

Technical Field

[0001] This utility model belongs to the field of polyurethane sealant melting technology, specifically a polyurethane sealant melting device. Background Technology

[0002] Polyurethane sealants are widely used in many fields such as industrial production and construction due to their excellent weather resistance, elasticity, and adhesion, for tasks such as filling gaps and sealing / waterproofing. However, polyurethane sealants are usually solid or in a high-viscosity state at room temperature, and need to be melted into a liquid with good flowability before use to facilitate application.

[0003] Currently, some existing polyurethane sealant melting devices on the market have simple stirring structures, relying solely on simple stirring blades for stirring. This makes it difficult to achieve uniform heating and thorough mixing of the sealant during the melting process, resulting in large local temperature differences in the sealant, which affects its melting quality and performance stability. Moreover, some devices require manual tilting or the use of complex mechanical structures when discharging, which not only increases the labor intensity of operators but may also lead to uneven discharge or even material leakage due to improper operation.

[0004] Therefore, it is necessary to modify it by setting up a counter-stirring structure and uniform heating to improve the melting effect of the sealant, and at the same time facilitate the discharge after melting, thereby improving the melting effect and efficiency. Utility Model Content

[0005] To address the problems mentioned in the background art, the purpose of this utility model is to provide a polyurethane sealant melting device, which improves the sealing agent melting effect by setting a counter-stirring structure and uniform heating, and facilitates material discharge after melting, thereby improving the melting effect and efficiency and making it convenient for users.

[0006] This utility model provides the following technical solution: a polyurethane sealant melting device, comprising a base, an outer box, an inner box, a rotary servo motor, a sealing cover structure, an upper stirring structure, a lower stirring structure, a heating wire, and a discharge hopper. The back of the outer box is hinged to the upper rear side of the inner wall of the base via a shaft. The rotary servo motor is mounted on the upper front of the base via a bracket. The output end of the rotary servo motor extends into the interior of the base and is fixedly connected to the front of the outer box. The rotary servo motor can tilt the outer box to facilitate material discharge. The inner box is installed inside the outer box, and the sealing cover structure is installed on the top of the outer box. The upper part fits into the top of the inner box, which is used to close the top of the inner box during melting. The upper stirring structure is installed in the center of the closed cover structure, and the lower part of the upper stirring structure extends into the interior of the inner box. The lower stirring structure is installed in the center of the bottom of the inner box. The upper and lower stirring structures are staggered. The stirring and melting effect is improved by the counter-rotation of the upper and lower stirring structures. The heating wire is installed in the gap between the outer box and the inner box, and its inner side is in contact with the surface of the inner box. The discharge hopper is connected to the upper side of the inner box, and its output end extends through the side of the outer box for convenient discharge and pressure relief and exhaust during melting.

[0007] The beneficial effects of this utility model are as follows: 1. This utility model features an outer casing hinged to the base via a shaft, with a rotary servo motor connected to the outer casing. This allows the outer casing to tilt, enabling gravity to facilitate smoother flow of the sealant during discharge. This avoids the inconvenience of manual tilting or complex mechanical discharge structures, reducing operator workload and minimizing the risk of improper operation leading to uneven discharge and material leakage. The inner casing is located inside the outer casing, and the sealed lid structure closes the top of the inner casing during melting, preventing heat loss and debris entry, thus ensuring the stability of the melting process. Furthermore, the upper and lower stirring structures are staggered and rotate in opposite directions. This unique stirring method improves the stirring and melting effect, ensuring the sealant is evenly heated and fully mixed during melting. This effectively avoids large local temperature differences, thereby improving the melt quality and performance stability of the sealant. The discharge hopper not only facilitates discharge but also allows for pressure relief and venting during melting, ensuring the safety of the device operation.

[0008] 2. This utility model, by setting two first electric telescopic rods and electrically connecting them through a synchronizer, can ensure that the telescopic rods move synchronously, so that the top cover rises and falls smoothly. When the top cover falls, its bottom fits tightly with the top of the outer box and the inner box. During the melting operation, it can effectively close the top of the inner box, prevent heat from dissipating outward, improve energy utilization efficiency, and also prevent external impurities from entering the inner box, ensuring the purity and melting quality of the polyurethane sealant. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the rear view structure of this utility model; Figure 3 This is a frontal sectional view of the present invention. Figure 4 This is a schematic diagram of the left sectional view of the present invention; Figure 5 This is a top sectional view of the structure of this utility model; Figure 6 This is a schematic diagram of the right-side cross-sectional structure of this utility model.

[0010] In the diagram: 1. Base; 2. Outer casing; 3. Inner casing; 4. Rotary servo motor; 5. Sealing cover structure; 6. Upper stirring structure; 7. Lower stirring structure; 8. Heating wire; 9. Discharge hopper; 10. First electric telescopic rod; 11. Top cover; 12. First drive motor; 13. Stirring frame; 14. Second drive motor; 15. Horizontal rod; 16. Spiral stirring rod; 17. Second electric telescopic rod; 18. Positioning friction plate; 19. Heat-resistant scraping strip; 20. Heat-resistant scraping ring; 21. Heat insulation plate. Detailed Implementation

[0011] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0012] like Figures 1 to 6 As shown, the polyurethane sealant melting device of this embodiment includes a base 1, an outer casing 2, an inner casing 3, a rotary servo motor 4, a sealing cover structure 5, an upper stirring structure 6, a lower stirring structure 7, a heating wire 8, and a discharge hopper 9. The back of the outer casing 2 is hinged to the upper rear side of the inner wall of the base 1 via a shaft. The rotary servo motor 4 is mounted on the upper front of the base 1 via a bracket. The output end of the rotary servo motor 4 extends into the interior of the base 1 and is fixedly connected to the front of the outer casing 2 via a reducer. The rotary servo motor 4 can tilt the outer casing 2 to facilitate material discharge. The inner casing 3 is installed inside the outer casing 2, and the sealing cover structure 5 is installed on the top of the outer casing 2. The bottom is attached to the top of the inner box 3 to close the top of the inner box 3 during melting. The upper stirring structure 6 is installed in the center of the closed cover structure 5, and the lower part of the upper stirring structure 6 extends into the interior of the inner box 3. The lower stirring structure 7 is installed in the center of the bottom of the inner box 3. The upper stirring structure 6 and the lower stirring structure 7 are staggered. The stirring and melting effect is improved by the counter-rotation of the upper stirring structure 6 and the lower stirring structure 7. The heating wire 8 is installed in the sandwich between the outer box 2 and the inner box 3, and its inner side is attached to the surface of the inner box 3. The discharge hopper 9 is connected to the upper side of the inner box 3, and its output end extends through to the side of the outer box 2 to facilitate material discharge and pressure relief and exhaust during melting.

[0013] refer to Figure 2 The closed cover structure 5 includes a first electric telescopic rod 10 fixedly connected to the front and rear sides of the outer box 2, and the two first electric telescopic rods 10 are electrically connected through a synchronizer. The top of the first electric telescopic rod 10 is fixedly connected to a top cover 11. The bottom of the top cover 11 fits against the top of the outer box 2 and the inner box 3. Circular grooves are opened at the four corners of the top of the outer box 2, and stabilizing rods are slidably connected inside the circular grooves. The top of the stabilizing rods is fixedly connected to the bottom of the top cover 11.

[0014] This embodiment, by setting two first electric telescopic rods 10 and electrically connecting them through a synchronizer, can ensure that the telescopic rods move synchronously, so that the top cover 11 rises and falls smoothly. When the top cover 11 falls, its bottom fits tightly against the top of the outer box 2 and the inner box 3. During the melting operation, it can effectively close the top of the inner box 3, prevent heat from dissipating outward, improve energy utilization efficiency, and also prevent external impurities from entering the inner box 3, ensuring the purity and melting quality of the polyurethane sealant.

[0015] refer to Figure 3 The upper stirring structure 6 includes a first drive motor 12 fixedly connected to the top of the top cover 11. The output end of the first drive motor 12 extends through to the bottom of the top cover 11 and is fixedly connected to a stirring frame 13. The top of the stirring frame 13 is rotatably connected to the bottom of the top cover 11.

[0016] In this embodiment, a first drive motor 12 is mounted on the top of the top cover 11, with its output end passing through the top cover 11 and fixedly connected to the stirring frame 13, enabling stable rotation of the stirring frame 13. The top of the stirring frame 13 is rotatably connected to the bottom of the top cover 11, ensuring the smoothness of the stirring frame 13's rotation. During the melting process, the stirring frame 13 can fully stir the polyurethane sealant in the inner chamber 3, causing the sealant to continuously tumble and mix in the horizontal direction, which helps to evenly transfer heat, further improving the melt quality of the sealant and ensuring that the sealant can be fully heated and achieve good fluidity.

[0017] refer to Figure 3 The lower stirring structure 7 includes a second drive motor 14 fixedly connected to the center of the bottom of the inner wall of the outer box 2. The output end of the second drive motor 14 extends into the interior of the inner box 3 and is fixedly connected to a horizontal rod 15. Spiral stirring rods 16 are fixedly connected to the left and right sides of the top of the horizontal rod 15.

[0018] This embodiment further enhances the mixing effect through the design of the second drive motor 14, the horizontal rod 15, and the spiral stirring rod 16. The second drive motor 14 is fixed to the center of the bottom of the inner wall of the outer casing 2, and its output end passes through the inner casing 3 and connects to the horizontal rod 15, enabling it to stably drive the horizontal rod 15 to rotate. During rotation, the spiral stirring rods 16 on the left and right sides of the top of the horizontal rod 15 can not only stir the sealant in the horizontal direction, but also push the sealant to flow in the vertical direction. This works in conjunction with the upper stirring structure 6 to form a more complex and efficient mixing mode. This counter-rotating stirring method ensures that the sealant is fully stirred and mixed in all directions, improving the melting effect of the sealant and ensuring the quality and performance stability of the sealant.

[0019] refer to Figure 3 A second electric telescopic rod 17 is fixedly connected to the center of the bottom of the inner wall of the base 1. A positioning friction plate 18 is fixedly connected to the top of the second electric telescopic rod 17. A groove is opened in the center of the bottom of the outer box 2. The surface of the positioning friction plate 18 is in contact with the inner wall of the groove.

[0020] This embodiment provides better stability to the device by designing a second electric telescopic rod 17 and a positioning friction plate 18 at the center of the bottom of the inner wall of the base 1. When the device is in normal working condition, the second electric telescopic rod 17 extends, pushing the positioning friction plate 18 into the groove at the center of the bottom of the outer box 2. The positioning friction plate 18 fits against the inner wall of the groove, increasing the friction between the outer box 2 and the base 1, effectively preventing the outer box 2 from shaking or shifting during the stirring process, and ensuring the stability and safety of the device operation. When discharge is required, the second electric telescopic rod 17 retracts, the positioning friction plate 18 disengages from the groove, and the outer box 2 can tilt smoothly under the drive of the rotary servo motor 4 without affecting the discharge operation.

[0021] refer to Figure 3 A heat-resistant scraping strip 19 is fixedly connected to the bottom of the horizontal bar 15. The bottom of the heat-resistant scraping strip 19 is in contact with the bottom of the inner wall of the inner box 3. Connecting rods are fixedly connected to the front and rear sides of the bottom of the top cover 11. A heat-resistant scraping ring 20 is fixedly connected to the bottom of the connecting rod. The bottom of the heat-resistant scraping ring 20 is in contact with the bottom of the inner wall of the inner box 3. The outer side of the heat-resistant scraping ring 20 is in sliding contact with the inner wall of the inner box 3.

[0022] In this embodiment, the heat-resistant scraping strip 19, as the transverse rod 15 rotates, continuously scrapes the bottom of the inner wall of the inner box 3, preventing the sealant from accumulating and clumping at the bottom of the inner box 3, ensuring the fluidity and uniformity of the sealant, and also facilitating heat transfer and improving the melting effect. The bottom of the heat-resistant scraping ring 20 is in contact with the bottom of the inner wall of the inner box 3, and the outer side slides in contact with the inner wall of the inner box 3, scraping the inner wall of the inner box 3. During discharge, it moves upward as the top cover 11 opens, scraping the sealant on the inner wall of the inner box 3, reducing material residue, improving material utilization, and helping to keep the inside of the inner box 3 clean, facilitating subsequent use and maintenance.

[0023] refer to Figure 3 The bottom of the inner box 3 is fixedly connected to a heat insulation plate 21. The outer side of the heat insulation plate 21 is fixedly connected to the inner wall of the outer box 2. The bottom of the outer box 2 is provided with a number of motor ventilation holes, and the inside of the motor ventilation holes is provided with a dustproof net.

[0024] In this embodiment, the heat insulation plate 21 effectively prevents heat from the inner casing 3 from being transferred to the bottom of the outer casing 2, reducing heat loss and improving energy efficiency. It also protects the components at the bottom of the outer casing 2 from high temperatures, extending the device's service life. The motor ventilation holes at the bottom of the outer casing 2 provide good ventilation and heat dissipation for components such as the second drive motor 14, ensuring the motor operates in a suitable temperature environment and improving its efficiency and stability. The dust filter prevents dust and other debris from entering the ventilation holes, avoiding damage to the motor and other components, further ensuring the normal operation of the device.

[0025] refer to Figure 3 The inner box 3 is made of high thermal conductivity metal. A heat-equalizing layer is fixedly connected to the outer surface of the inner box 3. The surface of the heat-equalizing layer is attached to the surface of the heating wire 8. A heat-insulating layer is fixedly connected to the inner wall of the outer box 2.

[0026] This embodiment significantly improves the melting effect of the sealant by using a high thermal conductivity metal material for the inner casing 3 and incorporating a heat-equalizing layer, while the outer casing 2 has a heat-insulating layer on its inner wall. The high thermal conductivity metal material of the inner casing 3 can quickly transfer the heat from the heating wire 8 to the sealant, improving heating efficiency. The heat-equalizing layer ensures that heat is distributed more evenly on the surface of the inner casing 3, preventing localized overheating or underheating and ensuring uniform heating of the sealant during melting, thus improving melt quality. The heat-insulating layer on the inner wall of the outer casing 2 reduces heat loss, further improving energy utilization efficiency, and also lowers the surface temperature of the outer casing 2, preventing burns to operators and improving the safety of the device.

[0027] This invention uses a synchronizer to activate the first electric telescopic rod 10, extending it to open the top cover 11. Polyurethane sealant is then placed into the inner chamber 3. The synchronizer then controls the first electric telescopic rod 10 to retract, causing the top cover 11 to descend and tightly seal the outer chamber 2 and the top of the inner chamber 3, preventing heat loss and the entry of debris. Next, the heating wire 8 is activated. Because the inner chamber 3 is made of a highly thermally conductive metal and has a heat-equalizing layer on its outer surface, the heat generated by the heating wire 8 is quickly and evenly transferred to the sealant. Simultaneously, the first drive motor 12 of the upper stirring structure 6 drives the stirring frame 13 to rotate, and the second drive motor 14 of the lower stirring structure 7 drives the horizontal rod 15 and the spiral stirring rod 16 to rotate. These two rotating alternately in opposite directions thoroughly stir the sealant, ensuring it is evenly heated and fully mixed, improving the melt quality. Once the sealant has melted, if discharge is required, the rotary servo motor 4 is activated, which, through a reducer, tilts the outer chamber 2, allowing the sealant to flow out from the discharge hopper 9 under gravity.

Claims

1. A polyurethane sealant melting device, comprising a base (1) and an outer casing (2), characterized in that: The polyurethane sealant melting device further includes an inner box (3), a rotary servo motor (4), a closed cover structure (5), an upper stirring structure (6), a lower stirring structure (7), a heating wire (8), and a discharge hopper (9). The back of the outer box (2) is hinged to the upper rear side of the inner wall of the base (1) via a shaft. The rotary servo motor (4) is mounted on the upper front of the base (1) via a bracket. The output end of the rotary servo motor (4) extends into the interior of the base (1) and is fixedly connected to the front of the outer box (2). The rotary servo motor (4) drives the outer box (2) to tilt and discharge material. The inner box (3) is installed inside the outer box (2). The closed cover... Structure (5) is installed on the top of the outer box (2), and its bottom is attached to the top of the inner box (3) to close the top of the inner box (3). The upper stirring structure (6) is installed in the center of the closed cover structure (5). The lower part of the upper stirring structure (6) extends into the interior of the inner box (3). The lower stirring structure (7) is installed in the center of the bottom of the inner box (3). The upper stirring structure (6) and the lower stirring structure (7) are staggered. The heating wire (8) is installed in the interlayer between the outer box (2) and the inner box (3). Its inner side is attached to the surface of the inner box (3). The discharge hopper (9) is connected above the side of the inner box (3). Its output end extends through to the side of the outer box (2).

2. The polyurethane sealant melting device according to claim 1, characterized in that: The closed cover structure (5) includes a first electric telescopic rod (10) fixedly connected to the front and rear sides of the outer box (2), and the two first electric telescopic rods (10) are electrically connected through a synchronizer. The top of the first electric telescopic rod (10) is fixedly connected to a top cover (11), and the bottom of the top cover (11) is in contact with the top of the outer box (2) and the inner box (3).

3. The polyurethane sealant melting device according to claim 2, characterized in that: The upper stirring structure (6) includes a first drive motor (12) fixedly connected to the top of the top cover (11). The output end of the first drive motor (12) extends through to the bottom of the top cover (11) and is fixedly connected to a stirring rack (13). The top of the stirring rack (13) is rotatably connected to the bottom of the top cover (11).

4. The polyurethane sealant melting device according to claim 3, characterized in that: The lower stirring structure (7) includes a second drive motor (14) fixedly connected to the center of the bottom of the inner wall of the outer box (2). The output end of the second drive motor (14) extends through the interior of the inner box (3) and is fixedly connected to a horizontal rod (15). The left and right sides of the top of the horizontal rod (15) are fixedly connected to spiral stirring rods (16).

5. The polyurethane sealant melting device according to claim 4, characterized in that: A second electric telescopic rod (17) is fixedly connected to the center of the bottom of the inner wall of the base (1), and a positioning friction plate (18) is fixedly connected to the top of the second electric telescopic rod (17). A groove is provided in the center of the bottom of the outer box (2), and the surface of the positioning friction plate (18) is in contact with the inner wall of the groove.

6. The polyurethane sealant melting device according to claim 5, characterized in that: A heat-resistant scraping strip (19) is fixedly connected to the bottom of the horizontal rod (15). The bottom of the heat-resistant scraping strip (19) is in contact with the bottom of the inner wall of the inner box (3). Connecting rods are fixedly connected to the front and rear sides of the bottom of the top cover (11). A heat-resistant scraping ring (20) is fixedly connected to the bottom of the connecting rod. The bottom of the heat-resistant scraping ring (20) is in contact with the bottom of the inner wall of the inner box (3). The outer side of the heat-resistant scraping ring (20) is in sliding contact with the inner wall of the inner box (3).

7. The polyurethane sealant melting device according to claim 6, characterized in that: The bottom of the inner box (3) is fixedly connected to a heat insulation plate (21), the outer side of the heat insulation plate (21) is fixedly connected to the inner wall of the outer box (2), and the bottom of the outer box (2) is provided with a number of motor ventilation holes, and the inside of the motor ventilation holes is provided with a dustproof net.

8. The polyurethane sealant melting device according to claim 7, characterized in that: The inner box (3) is made of a high thermal conductivity metal material. A heat-equalizing layer is fixedly connected to the outer surface of the inner box (3). The surface of the heat-equalizing layer is attached to the surface of the heating wire (8). A heat-insulating layer is fixedly connected to the inner wall of the outer box (2).

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