A production line of energy storage type vacuum insulated panel composite core material

Abstract

This invention relates to a production line for a composite core material of an energy storage vacuum insulation panel, comprising a pulping tank, a pulp mixing tank, a wet forming machine, a conveyor belt, and a paper press. The wet forming machine includes a tank, a universal forming mesh, and a vacuum dewatering box. The paper press is connected to the downstream end of the wet forming machine via the conveyor belt, which is equipped with a drying device. The pulp mixing tank is connected to a phase change microcapsule mixing tank via a transfer pipe, and the phase change microcapsule mixing tank is connected to the wet forming machine via a second feeding pipe. The wet forming machine is equipped with a linear module, a lifting cylinder, and a spreading hopper. A dedicated forming mesh is provided at the bottom of the spreading hopper. This invention allows phase change microcapsules to be mixed separately and placed individually at specific locations on the wet forming machine, preventing breakage of the microcapsules. Furthermore, the addition position of the microcapsules can be adjusted as needed to ensure that the phase change microcapsule layer in the core material is at a preset position.

Description

Technical Field

[0001] This invention relates to composite core material production equipment, specifically to a production line for an energy storage type vacuum insulation panel composite core material. Background Technology

[0002] Vacuum insulation panels have developed rapidly in recent years. They do not use substances that harm the ozone layer and are known for being environmentally friendly and energy-saving. Furthermore, their thermal conductivity is very low, reaching 0.002-0.003 W / (m·K), making them the most efficient insulation material in the world today.

[0003] In many application fields, phase change energy storage materials can absorb heat from or release heat into the environment during the phase change process, thus achieving the purpose of energy storage and energy release. They have a significant effect on reducing energy consumption and are also economically competitive.

[0004] Based on the above description, if vacuum insulation panels and phase change materials can be combined through a unique process, a new type of vacuum insulation panel core material can be made. This core material can combine the advantages of both vacuum insulation panels and phase change materials. Considering that wet molding has the advantages of simple process, high production efficiency, low cost and the ability to prepare complex shaped products, the above conjecture can be realized through the design of a wet molding device.

[0005] Existing wet forming technologies, such as the Chinese utility model patent with application number 202123140054.2 and publication number CN216947477U, entitled "A Phase Change Microcapsule Impregnation Device and a Phase Change Nonwoven Fabric Production Device," describe the following technical content: "A phase change nonwoven fabric production device, in the material travel direction, includes a pre-reinforcement unit, a microcapsule application unit, and a composite reinforcement unit coupled sequentially. The microcapsule application unit includes a microcapsule impregnation device, a suction device B, and a heating device coupled sequentially; guide rollers for conveying materials are provided between the pre-reinforcement unit, the microcapsule application unit, and the composite reinforcement unit, as well as between the microcapsule impregnation device, the suction device B, and the heating device. The pre-reinforcement unit includes a circulating support curtain A and a guide roller A for conveying the support curtain A; pre-wetting water jets and..." The pre-wetting water jet head is provided below the support curtain A, corresponding to the pre-wetting water jet head and the pre-spinning water jet head. The suction device B is located between the impregnation tank and the heating device, below the circulating support curtain B. The heating device is a far-infrared heating device. Far-infrared heating has a simple structure and high heating efficiency. The composite reinforcement unit includes a circulating rotating support curtain C and several guide rollers for conveying the support curtain C. Above the support curtain C, there are pre-wetting guide rollers, composite guide rollers, and several water jet heads in sequence; below the support curtain C, corresponding to the pre-wetting guide rollers and several water jet heads, the suction device C is provided. The composite reinforcement unit also includes a drum water jet mechanism located behind the support curtain C; the drum water jet mechanism includes a drum and several drum water jet heads located outside the drum; a moisture removal device is provided behind the drum water jet mechanism; further, the moisture removal device is a vacuum suction device.

[0006] In the above technical solutions, the composite core material preparation methods are all carried out in a multi-layer stacking manner. This requires the production of paper materials piece by piece or layer by layer, and then the core material is obtained by stacking them. Since the addition position of phase change microcapsules is fixed during wet molding, the phase change microcapsule layer cannot be positioned in a specific location in the core material according to actual needs. This limits the performance of the core material, and the phase change microcapsule layer in the core material cannot perform its performance according to actual needs.

[0007] Furthermore, the above-mentioned scheme may cause the phase change microcapsule structure to break under stress during the raw material mixing process, leading to the failure of the phase change microcapsule layer and causing certain losses. Summary of the Invention

[0008] The purpose of this invention is:

[0009] Design a production line for energy storage type vacuum insulation panel composite core material. During the raw material mixing process, phase change microcapsules are mixed separately and placed at specific positions on the wet forming machine to avoid damage to the phase change microcapsules. The addition position of the phase change microcapsules can be adjusted as needed, so that the phase change microcapsule layer in the core material is in a preset position, which makes it easy for the phase change microcapsule layer to exert its performance according to actual needs.

[0010] To achieve the above objectives, the present invention provides the following technical solution:

[0011] A production line for an energy storage type vacuum insulation panel composite core material includes a pulping tank, a pulp mixing tank, a wet forming device, a conveyor belt, and a paper press. The pulping tank is connected to the pulp mixing tank via a raw material pipe, and the pulp mixing tank is connected to the wet forming device via a first feed pipe. The wet forming device includes a tank, a universal forming mesh, and a vacuum dewatering box. The paper press is connected to the downstream end of the wet forming device via the conveyor belt, which is equipped with a drying device. The production line also includes a phase change microcapsule mixing tank, which is connected to the pulp mixing tank via a transfer pipe. The phase change microcapsule mixing tank is connected to the wet forming device via a second feed pipe. The wet forming device is equipped with a linear module, a lifting cylinder, and a spreading hopper. The spreading hopper is connected to the end of the second feed pipe, and its vertical position corresponds to that of the universal forming mesh. A dedicated forming mesh is provided at the bottom of the spreading hopper.

[0012] Furthermore, the linear module is located on the side frame outside the trough, and the linear module is parallel to the universal molding mesh; a sliding frame is provided on the slide plate of the linear module, and the lifting cylinder is vertically arranged on the sliding frame; the spreading hopper is located on the lifting frame, and the lifting frame is connected to the piston rod of the lifting cylinder.

[0013] Furthermore, the lifting frame is movably connected to the guide rail on the sliding frame; the spreading hopper is in the shape of an inverted bucket, the special forming net is parallel to the general forming net, and the special forming net is sealed to the inner wall of the spreading hopper.

[0014] Furthermore, a sealing strip is provided at the bottom of the spreading hopper. The sealing strip is made of rubber and is arranged along the U-shaped outline of the bottom of the spreading hopper. A drive motor is provided on the trough, and a feeding wheel is provided at the end of the drive motor shaft. The feeding wheel is located inside the trough and corresponds to the upper and lower positions of the universal forming mesh.

[0015] Furthermore, the vacuum suction box is distributed in multiple chambers at the bottom of the tank, and the universal molding net is located on the upper part of the vacuum suction box; the connection between the first feeding pipe and the tank is located above the universal molding net.

[0016] Furthermore, the phase change microcapsule mixing tank includes a tank body and a stirring rack. The stirring rack is coaxially arranged inside the tank body and is equipped with stirring rods. The stirring rods are arranged in a circumferential array and are provided with stepped grooves. The transfer tube is specifically connected to the top of the tank body.

[0017] Furthermore, a first feeding pump is provided on the first feeding pipe, and a second feeding pump is provided on the second feeding pipe; it also includes a control terminal; the control terminal is electrically connected to the first feeding pump, the second feeding pump, the linear module, the solenoid valve of the lifting cylinder, and the drive motor.

[0018] The beneficial effects of this invention are as follows:

[0019] A production line for an energy storage type vacuum insulation panel composite core material is designed with a phase change microcapsule mixing tank. This allows for the gentle mixing of phase change microcapsules during the raw material mixing process, preventing microcapsule breakage and reducing losses caused by microcapsule rupture. The production line also incorporates a linear module, lifting cylinder, spreading hopper, and a dedicated forming mesh. This allows for the individual placement of phase change microcapsules at specific locations on the universal forming mesh of the wet forming machine. The addition position of the microcapsules can be adjusted as needed, ensuring that the phase change microcapsule layer in the core material is positioned at a preset location. This facilitates the microcapsule layer's performance according to actual needs, expanding the applicability of the core material product. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a production line for an energy storage type vacuum insulation panel composite core material according to the present invention.

[0021] Figure 2 This is a schematic diagram of the overall structure of the production line for an energy storage type vacuum insulation panel composite core material according to the present invention from another perspective.

[0022] Figure 3 This is a structural diagram of the wet forming machine for a production line of an energy storage type vacuum insulation panel composite core material according to the present invention.

[0023] Figure 4 This is a partial structural schematic diagram of the wet forming device for a production line of an energy storage type vacuum insulation panel composite core material according to the present invention.

[0024] Figure 5 This is a schematic diagram of the bottom of the material spreading hopper in the production line of the energy storage type vacuum insulation panel composite core material of the present invention.

[0025] Figure 6 This is a schematic diagram of the phase change microcapsule mixing tank in the production line of an energy storage type vacuum insulation panel composite core material according to the present invention.

[0026] Figure 7 for Figure 6 A partial structural diagram of the structure shown.

[0027] Figure label:

[0028] 1. Pulping tank; 2. Raw material pipe; 3. Pulp mixing tank; 4. First feed pipe; 5. Transfer pipe; 6. Phase change microcapsule mixing tank; 61. Tank body; 62. Mixing frame; 63. Mixing rod; 7. Second feed pipe; 8. First feed pump; 9. Second feed pump; 10. Wet forming device; 101. Tank body; 102. Universal forming mesh; 103. Vacuum suction box; 104. Side frame; 105. Linear module; 106. Sliding frame; 107. Lifting cylinder; 108. Lifting frame; 109. Spreading hopper; 1010. Special forming mesh; 1011. Sealing strip; 1012. Drive motor; 1013. Feeding wheel; 11. Conveyor belt; 12. Drying device; 13. Paper press; 14. Control terminal. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0030] refer to Figures 1 to 7A production line for a composite core material of an energy storage vacuum insulation panel includes a pulping tank 1, a pulp mixing tank 3, a wet forming machine 10, a conveyor belt 11, and a paper press 13. The pulping tank 1 is connected to the pulp mixing tank 3 via a raw material pipe 2. The pulping tank 1 is equipped with a propeller for uniform pulp mixing and adjusting pulp concentration and pH. The pulp mixing tank 3 is connected to the wet forming machine 10 via a first feed pipe 4 and is used to mix the core material raw material pulp. The wet forming machine 10 includes a tank 101, a universal forming mesh 102, and a vacuum suction box 103. The wet forming machine 10 is used to form a layered core material product. The paper press 13 is connected to the downstream end of the wet forming machine 10 via the conveyor belt 11. A drying device 12 is installed on the conveyor belt 11 for dehydrating and drying the layered core material product. The paper press 13 is used to press the layered core material product. The product is a composite core material. It also includes a phase change microcapsule mixing tank 6, connected to the slurry mixing tank 3 via a transfer pipe 5. The phase change microcapsule mixing tank 6 is connected to the wet forming machine 10 via a second feeding pipe 7. The phase change microcapsule mixing tank 6 is used to add phase change microcapsules to the core material raw material and mix them. The wet forming machine 10 is equipped with a linear module 105, a lifting cylinder 107, and a spreading hopper 109. The spreading hopper 109 is connected to the end of the second feeding pipe 7, and its vertical position corresponds to that of the general forming mesh 102. The spreading hopper 109 is used to spread the core material raw material containing phase change microcapsules flat on the general forming mesh 102, thereby forming a layered core material containing phase change microcapsules. A special forming mesh 1010 is provided at the bottom of the spreading hopper 109, allowing the core material raw material containing phase change microcapsules to pass through.

[0031] The linear module 105 is located on the side frame 104 outside the tank 101, and the linear module 105 is parallel to the universal molding mesh 102. A sliding frame 106 is provided on the slide plate of the linear module 105. The linear module 105 is used to drive the sliding frame 106 to move back and forth along the direction of the universal molding mesh 102, thereby adjusting the addition position of the layered core material containing phase change microcapsules. The lifting cylinder 107 is vertically arranged on the sliding frame 106. The spreading hopper 109 is located on the lifting frame 108. The lifting frame 108 is connected to the piston rod of the lifting cylinder 107. The lifting cylinder 107 is used to drive the lifting frame 108 to move up and down.

[0032] The lifting frame 108 is movably connected to the guide rail on the sliding frame 106. The guide rail is used to guide the lifting frame 108 to move up and down. The spreading hopper 109 is in the shape of an inverted bucket. The special forming net 1010 is parallel to the general forming net 102, and the special forming net 1010 is sealed to the inner wall of the spreading hopper 109. The spreading hopper 109 is used to contain and convey the core material raw material containing phase change microcapsules.

[0033] A sealing strip 1011 is provided at the bottom of the spreading hopper 109. The sealing strip 1011 is made of rubber and is arranged along the U-shaped outline of the bottom of the spreading hopper 109. The sealing strip 1011 is used to separate specific areas on the universal molding mesh 102 to prevent the core material forming in other parts from interfering with the forming of the layered core material containing phase change microcapsules. A drive motor 1012 is provided on the tank 101, and a feeding wheel 1013 is provided at the end of the rotating shaft of the drive motor 1012. The drive motor 1012 is a low-speed motor used to drive the feeding wheel 1013 to rotate. The feeding wheel 1013 is located inside the tank 101 and corresponds to the upper and lower positions of the universal molding mesh 102. The feeding wheel 1013 is used to drive the formed layered core material product to move along the universal molding mesh 102.

[0034] Vacuum water suction boxes 103 are distributed in multiple chambers at the bottom of the tank 101, and the universal molding net 102 is located above the vacuum water suction boxes 103. The vacuum water suction boxes 103 are used to perform water suction operation to realize the water suction molding of the core material slurry. The number of vacuum water suction boxes 103 is consistent with the number of core material layers. The connection between the first feeding pipe 4 and the tank 101 is located above the universal molding net 102 to realize the feeding of core material raw materials.

[0035] The phase change microcapsule mixing tank 6 includes a tank body 61 and a stirring rack 62. The stirring rack 62 is coaxially arranged inside the tank body 61 and is driven to rotate by a stirring motor. The stirring rack 62 is equipped with stirring rods 63, which are used to agitate the core material slurry to achieve mixing. The stirring rods 63 are arranged in a circumferential array and have stepped grooves. The stepped groove structure is used to enhance the agitation effect and improve the uniformity of mixing. The transfer pipe 5 is specifically connected to the top of the tank body 61, that is, feeding material along the rotation axis of the stirring rack 62, so as to avoid the phase change microcapsules being impacted by the tangential direction of the stirring rods 63, thereby further preventing the phase change microcapsules from breaking.

[0036] A first feeding pump 8 is installed on the first feeding pipe 4, and a second feeding pump 9 is installed on the second feeding pipe 7. Both the first feeding pump 8 and the second feeding pump 9 are used to control the feeding. It also includes a control terminal 14, which is specifically a PLC for centralized control. The control terminal 14 is electrically connected to the first feeding pump 8, the second feeding pump 9, the linear module 105, the solenoid valve of the lifting cylinder 107, and the drive motor 1012 to realize automatic control.

[0037] The working principle of this invention is as follows:

[0038] The core material is first added to the pulping tank 1. The core material is a glass fiber reinforcing filament suspension in the form of a slurry. The diameter of the glass fiber reinforcing filament is 1-50 μm. The core material enters the slurry mixing tank 3 from multiple pulping tanks 1 along the raw material pipe 2. The slurry mixing tank 3 is stirred to ensure that the core material is mixed evenly.

[0039] Most of the core material raw material that has been mixed in the slurry mixing tank 3 enters the wet molding machine 10 through the first feeding pipe 4, where the first feeding pump 8 plays a driving role; another small portion enters the phase change microcapsule mixing tank 6 through the transfer pipe 5.

[0040] Phase change microcapsules are added to phase change microcapsule mixing tank 6. Then, the stirring rack 62 of the phase change microcapsule mixing tank 6 starts to rotate at low speed. Multiple stirring rods 63 on the stirring rack 62 stir the core material raw material of the added phase change microcapsules. The round rod-shaped stirring rods 63 can avoid violent impact on the phase change microcapsules, thus avoiding damage to the phase change microcapsules.

[0041] The phase change material is one or two of the organic materials such as alcohols, alkanes or esters. The phase change material is encapsulated in a high polyester capsule to form a phase change microcapsule. The phase change microcapsule has a particle size of 0.1-20 μm and a phase change temperature of 20-50°C. The phase change process occurs inside the phase change microcapsule.

[0042] The core material is fed into the wet molding machine 10 through the first feeding pipe 4 and is located on the universal molding mesh 102; then the linear module 105 drives the sliding frame 106 to move to a specific position, corresponding to the position of a vacuum water suction box 103; the piston rod of the lifting cylinder 107 extends downward, driving the sliding frame 106 to move down, and the spreading hopper 109 moves down together. The sealing strip 1011 at the bottom of the spreading hopper 109 is in close contact with the designated position on the universal molding mesh 102 to form a water seal;

[0043] Subsequently, the second feed pump 9 feeds the core material raw material that has been mixed in the phase change microcapsule mixing tank 6 into the spreading hopper 109 along the second feed pipe 7. The core material raw material containing phase change microcapsules passes through the special forming mesh 1010 and reaches the sealing area formed by the special forming mesh 1010, the sealing strip 1011 and the general forming mesh 102.

[0044] Multiple vacuum suction boxes 103 start working to suck up water, and the core material raw material gradually settles on the universal forming mesh 102 to achieve the layered forming of the core material; the core material raw material on the universal forming mesh 102 is formed simultaneously until all water is sucked out to obtain the layered core material.

[0045] Subsequently, the piston rod of the lifting cylinder 107 retracts, driving the lifting frame 108 to rise, the spreading hopper 109 to lift, and the sealing strip 1011 to detach from the general molding mesh 102; then multiple drive motors 1012 are powered on and run, driving the feeding wheel 1013 to rotate. Under the driving action of the feeding wheel 1013, the layered core material product located on the general molding mesh 102 is moved horizontally onto the conveyor belt 11.

[0046] The conveyor belt 11 runs at a constant speed, driving the layered core material product slowly through the drying device 12 to obtain a completely dehydrated layered core material product; then the layered core material product can be slit, and the slit new material products are stacked in the original order and fed into the paper press 13 to obtain a composite core material product.

[0047] In this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0048] The above embodiments are used to further illustrate the present invention, but do not limit the present invention to these specific embodiments. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be understood as falling within the protection scope of the present invention.

Claims

1. A production line for an energy storage type vacuum insulation panel composite core material, characterized in that: The system includes a pulping tank (1), a pulp mixing tank (3), a wet forming machine (10), a conveyor belt (11), and a paper press (13). The pulping tank (1) is connected to the pulp mixing tank (3) via a raw material pipe (2). The pulp mixing tank (3) is connected to the wet forming machine (10) via a first feed pipe (4). The wet forming machine (10) includes a tank (101), a universal forming wire (102), and a vacuum suction box (103). The paper press (13) is connected to the downstream end of the wet forming machine (10) via the conveyor belt (11), and a drying device (12) is installed on the conveyor belt (11). The system also includes a... A phase change microcapsule mixing tank (6) is connected to the slurry mixing tank (3) via a transfer pipe (5). The phase change microcapsule mixing tank (6) is connected to the wet forming machine (10) via a second feeding pipe (7). The wet forming machine (10) is equipped with a linear module (105), a lifting cylinder (107), and a spreading hopper (109). The spreading hopper (109) is connected to the end of the second feeding pipe (7), and the spreading hopper (109) corresponds to the vertical position of the general forming mesh (102). A special forming mesh (1010) is provided at the bottom of the spreading hopper (109). The module (105) is located on the side frame (104) outside the tank (101), and the straight module (105) is parallel to the general forming mesh (102); a sliding frame (106) is provided on the slide plate of the straight module (105), and the lifting cylinder (107) is vertically arranged on the sliding frame (106); the spreading hopper (109) is located on the lifting frame (108), and the lifting frame (108) is connected to the piston rod of the lifting cylinder (107); the lifting frame (108) is movably connected to the guide rail on the sliding frame (106); the spreading hopper (109) is in the shape of an inverted bucket, and the special forming mesh (102) is... 10) Parallel to the general forming mesh (102), and the special forming mesh (1010) is sealed to the inner wall of the spreading hopper (109); the bottom end of the spreading hopper (109) is provided with a sealing strip (1011), the sealing strip (1011) is made of rubber and is laid along the U-shaped outline of the bottom end of the spreading hopper (109); the trough (101) is provided with a drive motor (1012), and the end of the shaft of the drive motor (1012) is provided with a feeding wheel (1013), the feeding wheel (1013) is located inside the trough (101) and corresponds to the upper and lower positions of the general forming mesh (102).

2. The production line for an energy storage type vacuum insulation panel composite core material according to claim 1, characterized in that: The vacuum water suction box (103) is distributed in multiple chambers at the bottom of the tank (101), and the universal molding net (102) is located on the upper part of the vacuum water suction box (103); the connection between the first feed pipe (4) and the tank (101) is located above the universal molding net (102).

3. The production line for an energy storage type vacuum insulation panel composite core material according to claim 2, characterized in that: The phase change microcapsule mixing tank (6) includes a tank body (61) and a stirring rack (62). The stirring rack (62) is coaxially arranged inside the tank body (61), and a stirring rod (63) is provided on the stirring rack (62). The stirring rod (63) is distributed in a circumferential array, and a stepped groove is provided on the stirring rod (63). The transfer tube (5) is specifically connected to the top of the tank body (61).

4. The production line for an energy storage type vacuum insulation panel composite core material according to claim 3, characterized in that: The first feeding pipe (4) is equipped with a first feeding pump (8), and the second feeding pipe (7) is equipped with a second feeding pump (9); it also includes a control terminal (14); the control terminal (14) is electrically connected to the first feeding pump (8), the second feeding pump (9), the linear module (105), the solenoid valve of the lifting cylinder (107) and the drive motor (1012).

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