A polyurethane feed based sandwich panel edge banding plant
By using explosion-proof panels to separate the operating room and the synthesis room in the sandwich panel edge sealing workshop, and by installing fans and gas monitoring equipment in the synthesis room, the safety problem of polyurethane material transportation was solved, achieving higher safety and stability.
Patent Information
- Application Number
- CN202521359252.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-30
- Publication Date
- 2026-06-09
- Estimated Expiration
- 2035-06-30
AI Technical Summary
In the production of sandwich panels, the material transportation and production workshop layout of the polyurethane edge sealing process pose safety risks and affect the stability of the operating room.
Explosion-proof panels are used to separate the operating room and the synthesis room. A fan is installed in the synthesis room to create a negative pressure space. It is equipped with a combustible gas alarm and a pressure gauge. The floor of the synthesis room is higher than that of the operating room. Double-layer pipes are used to transport materials to enhance safety and prevent accidents.
This reduces the impact of accidents in the synthesis room on the operating room, allows for timely removal of gas leaks, and improves the safety and operational stability of the edge sealing workshop.
Smart Images
Figure CN224332537U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of polyurethane processing technology, and in particular to a sandwich panel edge banding workshop based on polyurethane material supply. Background Technology
[0002] In the manufacturing process of sandwich panels, polyurethane foam sealing is required, which is a very important step. Currently, the material used in the foam sealing process of polyurethane edge-sealing sandwich panels is foamable polyurethane liquid.
[0003] In the relevant technical solutions, the polyurethane liquid is produced by the supplier or in the chemical material production area of the factory, and then transported to the sealing workshop through tanks or pipelines.
[0004] The inventors attempted to locate the polyurethane production workshop and the operating room in the same location to reduce the length of the delivery pipeline or avoid vehicle transfer. However, placing them in the same location within the factory area could compromise the safety of the operating room and introduce uncertainties and risks into its operation. Utility Model Content
[0005] This invention provides a sandwich panel edge banding workshop based on polyurethane feeding, which can solve at least one of the above-mentioned technical problems.
[0006] To address the aforementioned technical problems, one or more embodiments of this utility model provide a sandwich panel edge-sealing workshop based on polyurethane supply, comprising an operating room and a synthesis room separated by explosion-proof panels. The floor of the synthesis room is 0.2m-0.5m higher than the floor of the operating room. The synthesis room is equipped with a first continuous stirring tank and a second continuous stirring tank. The inlet of the first continuous stirring tank is connected to a polyether polyol tank, a catalyst tank, and a pentane tank, respectively. The inlet of the second continuous stirring tank is connected to an isocyanate tank. The first and second continuous stirring tanks are respectively connected to the inlet of a mixer via a first pipeline. A metering pump is installed on each of the first pipelines. The outlet of the mixer is connected to the inlet of a third continuous stirring tank. The outlet of the third continuous stirring tank is connected to a second pipeline, which extends from the synthesis room to the operating room and connects to a nozzle.
[0007] The side walls of the synthesis chamber are equipped with fans to draw air out to the outside, creating a negative pressure space in the synthesis chamber that is relatively isolated from the outside. The top of the synthesis chamber is equipped with a combustible gas alarm to monitor whether there is gas leakage in the foaming space. The outlet of the metering pump is equipped with a pressure gauge.
[0008] The beneficial effects of one or more of the above technical solutions are as follows:
[0009] In this solution, the edge-sealing workshop is divided into an operating room and a synthesis room by explosion-proof panels. This facilitates the reinforcement of the explosion-proof capability on the side of the sandwich panel operating room that is close to the polyurethane synthesis room, thereby reducing or avoiding the impact of an accident in the synthesis room on the operating room.
[0010] In addition, installing a fan in the synthesis chamber helps maintain a negative pressure environment, facilitating the continuous removal of gases and preventing gas leaks and accumulation that could lead to combustion or explosion. Simultaneously, the use of pressure gauges and combustible gas detectors allows for constant monitoring of the internal environment of the synthesis chamber, enabling timely shutdown and evacuation of personnel before an accident occurs. Attached image description:
[0011] Figure 1 This is a cross-sectional view of the operating room and synthesis room structures in an embodiment of this utility model;
[0012] Figure 2 This is a partial structural cross-sectional view of the synthesis chamber in an embodiment of this utility model;
[0013] Figure 3 This is a schematic diagram of the polyurethane synthesis process in an embodiment of this utility model.
[0014] In the diagram, 1 is the operating room; 2 is the ceiling; 3 is the synthesis room; 301 is the upper space; 302 is the lower space; 4 is the floor; 5 is the explosion-proof plate; 6 is the first continuous mixing vessel; 7 is the camera; 8 is the second continuous mixing vessel; 9 is the fan; 10 is the catalyst tank; 11 is the shelf; 12 is the polyether polyol tank; 13 is the pentane tank; 14 isocyanate tank; 15 is the second pipeline; 16 is the third continuous mixing vessel; 17 is the mixer; 18 is the first metering pump; 19 is the second metering pump; 20 is the second feed pipe; and 21 is the first feed pipe. Detailed Implementation
[0015] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings.
[0016] like Figures 1-3As shown, one or more embodiments of this utility model provide a sandwich panel edge-sealing workshop based on polyurethane supply, including an operating room 1 and a synthesis room 3 separated by explosion-proof panels 5. The floor of the synthesis room 3 is 0.2m-0.5m higher than the floor of the operating room 1. The synthesis room 3 is equipped with a first continuous stirring tank 6 and a second continuous stirring tank 8. The inlet of the first continuous stirring tank 6 is connected to a polyether polyol tank 12, a catalyst tank 10, and a pentane tank 13, respectively. The inlet of the second continuous stirring tank 8 is connected to an isocyanate tank 14. The first continuous stirring tank 6 and the second continuous stirring tank 8 are respectively connected to the inlet of a mixer 17 through a first pipeline. A metering pump is installed on the first pipeline. The outlet of the mixer 17 is connected to the inlet of a third continuous stirring tank 16. The outlet of the third continuous stirring tank 16 is connected to a second pipeline 15. The second pipeline 15 extends from the synthesis room 3 to the operating room 1 and is connected to a nozzle.
[0017] The side wall of the synthesis chamber 3 is equipped with a fan 9, which is used to draw air to the outside to form a negative pressure space in the synthesis chamber 3 that is separated from the outside. The top of the synthesis chamber 3 is equipped with a combustible gas alarm to monitor whether there is gas leakage in the foaming space. The outlet of the metering pump is equipped with a pressure gauge.
[0018] Specifically, pentane here is a foaming agent used to create a large number of voids in the synthesized polyurethane liquid, so that the polyurethane can expand and fill the gaps on the four sides of the sandwich panel. The expansion and fixation of the polyurethane can effectively seal the edges of this part.
[0019] Specifically, a first metering pump 18 is provided on the first pipeline between the first continuous stirring vessel 6 and the mixer 17, and a second metering pump 19 is provided on the first pipeline between the second continuous stirring vessel 8 and the mixer 17.
[0020] Specifically, because the operating room 1 actually performs the function of sandwich panel composite production, the synthesis space is used for the synthesis and supply of polyurethane. In this embodiment, the height of the operating room 1 is greater than that of the synthesis room 3.
[0021] More specifically, the operating room 1 and the synthesis room 3 each have wall panels, and a canopy 2 is installed on top of the wall panels.
[0022] join Figure 1 and Figure 2 The synthesis chamber 3 is divided into an upper space 301 and a lower space 302 by a shelf 11. The catalyst tank 10, mixer 17, first continuous stirred tank 6, second continuous stirred tank 8, and third continuous stirred tank 16 are installed in the upper space 301. The lower space 302 contains a polyether polyol tank 12, a pentane tank 13, and an isocyanate tank 14. This arrangement allows for full utilization of the space in the synthesis chamber 3 through its layered design.
[0023] Specifically, to reduce the weight of the shelf 11 and prevent it from affecting the gas flow between the upper and lower layers, the shelf 11 here is a grid plate. In maintenance mode, maintenance workers can perform maintenance on multiple mixing tanks at the grid plate under the protection of safety ropes.
[0024] The shelf 11 here can be raised, lowered, and positioned. Specifically, the raising and lowering of the shelf 11 can be driven by a lifting mechanism. The lifting mechanism can be, but is not limited to, a hydraulic cylinder, a gear and rack and pinion motor, or a drum and sprocket mechanism.
[0025] When the entire continuous mixing vessel needs to be replaced, first empty the lower space 302, then lower the shelf 11, and replace the corresponding mixing vessel.
[0026] Specifically, a floor 4 is provided at the bottom of the synthesis room 3. The floor 4 is used to raise the height of the synthesis space, thereby increasing the height of the various material tanks and mixing vessels used for synthesizing polyurethane, and preventing backflow of external rainwater.
[0027] As can be seen, in order to monitor the operation of each device in the synthesis space, cameras 7 are respectively installed in the upper space 301 and the lower space 302. The camera 7 in the upper space 301 is fixed below the ceiling 2, and the camera 7 in the lower space 302 is fixed on the lower surface of the shelf 11.
[0028] In this embodiment, the first continuous stirring vessel 6 is connected to the polyether polyol tank 12, the catalyst tank 10 and the pentane tank 13 through the first feed pipe 21, and the second continuous stirring vessel 8 is connected to the isocyanate tank 14 through the second feed pipe 20.
[0029] In this embodiment, the first feed pipe 21, the second feed pipe 20, the first pipeline and the second pipe all include an inner pipe and a sleeve. The inner pipe is embedded in the sleeve and is used to transport materials. The interlayer between the sleeve and the inner pipe is used to transport nitrogen. Pressure gauges are respectively installed at the inner pipe and the sleeve.
[0030] Specifically, at this point, the inner tube and the outer tube form a double-layer tube. The specific structure of the double-layer tube can adopt existing structures and commercially available products. It is only necessary to open the air inlet and outlet at the corresponding positions on the outer tube to facilitate the flow of nitrogen.
[0031] In this embodiment, the outer casing is covered with a prefabricated glass wool shell, and adjacent inner pipes are connected by valves or flanges, with rare earth insulation layers sprayed on the valves or flanges.
[0032] In this embodiment, the synthesis room 3 and the operation room 1 share a common explosion-proof plate 5, which can separate the two.
[0033] Specifically, the explosion-proof plate 5 here is also made of fire-resistant board material, and the specific material of the explosion-proof plate 5 can be set by those skilled in the art.
[0034] In this embodiment, there are multiple monitoring cameras 7. Specifically, some cameras 7 are located above the material tanks and mixing vessels, while others are located on the side walls of the synthesis chamber 3, thus surrounding the material tanks and mixing vessels.
[0035] Alternatively, the monitoring camera 7 can be moved within the synthesis room 3 by a mobile vehicle. This mobile vehicle can be a tracked vehicle that travels along a predetermined path, or it can be an intelligent vehicle with visual recognition and path planning capabilities. More specific structural configurations can be determined by those skilled in the art, and will not be elaborated upon here.
[0036] In this embodiment, there are multiple fans 9, and the air outlets of the fans 9 face the external environment.
[0037] Specifically, multiple fans 9 are installed at different positions on the side plates of the synthesis chamber 3.
[0038] In this embodiment, the floor of the operating room 1 is not lower than the outside ground, and the synthesis room 3 is 0.3m higher than the operating room 1. In other embodiments, the synthesis room 3 may be 0.4m or 0.5m higher than the operating room 1, etc.
[0039] Working principle: When this device is used, the entire device is started. The polyether polyol tank 12, catalyst tank 10, and pentane tank 13 are connected and respectively transport the materials to the first continuous stirred tank 6, so that the three are stirred and mixed evenly. The isocyanate tank 14 is transported to the second continuous stirred tank 8 for stirring evenly. Then, the polyether polyol, surfactant, pentane, and isocyanate are sent to the mixer 17 for rapid mixing. After mixing, they are sent to the third continuous stirred tank 16 for full reaction to form a polyurethane liquid.
[0040] When the sandwich panels in operating room 1 need to be edge-sealed using polyurethane liquid, the polyurethane liquid is transported to operating room 1 through a second feed pipe. Then, a spray gun at the end of the second feed pipe sprays the polyurethane liquid onto the sides of the sandwich panels. Under the influence of pentane foaming, the polyurethane liquid rapidly fills and expands on the sides of the sandwich panels. After the polyurethane liquid solidifies, the edge-sealing of the sandwich panels is completed.
[0041] During use, turn on the blower 9, combustible gas alarm, and pressure sensor to constantly monitor for any abnormal leaks in the materials in the synthesis chamber 3.
[0042] The above specific embodiments should not be construed as limiting the scope of protection of this utility model. For those skilled in the art, any alternative improvements or modifications made to the embodiments of this utility model shall fall within the scope of protection of this utility model.
[0043] Any aspects of this utility model not described in detail are known to those skilled in the art.
Claims
1. A sandwich panel edge banding workshop based on polyurethane supply, characterized in that, The system includes an operating room and a synthesis room separated by explosion-proof panels. The floor of the synthesis room is 0.2m-0.5m higher than that of the operating room. The synthesis room is equipped with a first continuous stirring tank and a second continuous stirring tank. The inlet of the first continuous stirring tank is connected to a polyether polyol tank, a catalyst tank, and a pentane tank, respectively. The inlet of the second continuous stirring tank is connected to an isocyanate tank. The first and second continuous stirring tanks are connected to the inlet of a mixer via a first pipeline. A metering pump is installed on the first pipeline. The outlet of the mixer is connected to the inlet of a third continuous stirring tank. The outlet of the third continuous stirring tank is connected to a second pipeline, which extends from the synthesis room to the operating room and connects to a nozzle. The synthesis chamber is equipped with a fan on its side wall to draw air out to the outside, thereby creating a negative pressure space in the synthesis chamber that is relatively isolated from the outside. The top of the synthesis chamber is equipped with a combustible gas alarm to monitor whether there is gas leakage in the foaming space. The outlet of the metering pump is equipped with a pressure gauge.
2. The sandwich panel edge banding workshop based on polyurethane supply according to claim 1, characterized in that, The first continuous stirred tank is connected to the polyether polyol tank, the catalyst tank and the pentane tank through the first feed pipe, and the second continuous stirred tank is connected to the isocyanate tank through the second feed pipe.
3. The sandwich panel edge banding workshop based on polyurethane supply according to claim 2, characterized in that, The first feed pipe, the second feed pipe, the first pipeline, and the second pipe all include an inner pipe and a sleeve. The inner pipe is embedded in the sleeve and is used to transport materials. The interlayer between the sleeve and the inner pipe is used to transport nitrogen. Pressure gauges are respectively installed at the inner pipe and the sleeve.
4. The sandwich panel edge banding workshop based on polyurethane supply according to claim 3, characterized in that, The outer casing of the sleeve is covered with a prefabricated glass wool shell, and adjacent inner tubes are connected by valves or flanges, with rare earth insulation layers sprayed on the valves or flanges.
5. The sandwich panel edge banding workshop based on polyurethane supply according to claim 1, characterized in that, The synthesis room and the operation room share a common explosion-proof panel, which can separate the two.
6. The sandwich panel edge banding workshop based on polyurethane supply according to claim 1, characterized in that, The synthesis room is equipped with multiple monitoring cameras; alternatively, the monitoring cameras can be moved within the synthesis room by a mobile vehicle.
7. The sandwich panel edge banding workshop based on polyurethane supply according to claim 1, characterized in that, The number of fans is multiple, and the air outlets of the fans face the external environment.
8. The sandwich panel edge banding workshop based on polyurethane supply according to claim 1, characterized in that, The floor of the operating room is not lower than the outside ground, and the synthesis room is 0.3m higher than the operating room.
9. The sandwich panel edge banding workshop based on polyurethane supply according to claim 1, characterized in that, The synthesis chamber is divided into an upper space and a lower space by a grid plate, which can be raised, lowered and positioned. The upper space is equipped with a first continuous stirring tank, a second continuous stirring tank, a third continuous stirring tank and a catalyst tank, and the lower space is equipped with a polyether polyol tank, an isocyanate tank and a pentane tank.