Feeding device for photovoltaic adhesive film production

Abstract

The utility model discloses a feeding device for photovoltaic adhesive film production, which belongs to the field of photovoltaic adhesive film production, and comprises a rack, and a feeding mechanism consisting of a suction storage mechanism and a preheating conveying mechanism is used in cooperation with feeding in photovoltaic adhesive film production. The purpose of automatically sucking, feeding and storing white color master batches in a material bag can be achieved through the material sucking and storing mechanism in a negative pressure material sucking mode, a valve is opened through the preheating material conveying mechanism, and after the white color master batches needing to be conveyed and fed enter a heating box, the interior of the heating box is heated through an air heater; white color master batches can be preheated to a preset temperature, so that the white color master batches can be uniformly heated after being conveyed and fed into a material barrel, and the rotating speed of a rotating shaft is controlled through a speed adjusting motor, so that the rotating shaft conveys materials through a spiral blade in the rotating process, the feeding speed of the white color master batches is controlled, and the feeding efficiency of the white color master batches is improved. And labor is saved, and the production efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the field of photovoltaic film production, in particular to a feeding device for photovoltaic film production. Background Technique

[0002] Solar energy is a high-quality and efficient green renewable energy source, with characteristics such as green, sustainable, and wide application range. Vigorously developing the utilization of solar energy is a hot issue in current research. A solar cell is a photovoltaic semiconductor thin sheet that directly generates electricity using sunlight. After being irradiated by sunlight of a certain wavelength, it can output a corresponding voltage and generate current in the case of a circuit, that is, a device that converts electrical energy into light energy through the photovoltaic effect or the photochemical effect.

[0003] The solar encapsulation film is an important part of the photovoltaic module's utilization of solar energy. The performance of the film is closely related to the power generation efficiency and service life of the photovoltaic. When the solar cell is exposed to the external environment, it is extremely easy to age and degrade, resulting in the damage of the solar cell and affecting the utilization efficiency of solar energy. Therefore, selecting an excellent solar encapsulation film can improve the conversion efficiency of the solar cell and extend the service life of the solar cell, etc.

[0004] EVA (ethylene-vinyl acetate) is a commonly used hot-melt adhesive material and an indispensable part of the photovoltaic module. Among them, the white EVA film made from EVA raw materials has excellent high reflectivity and excellent anti-aging performance, so it is widely used in the encapsulation of photovoltaic modules. In the preparation of the white EVA film, generally, titanium dioxide is added to the EVA raw materials for modification to make it have high-reflection performance. In this process, to maintain uniformity, the titanium dioxide needs to be pre-melted and granulated in advance to make it blend into the EVA particles to obtain a white masterbatch. Then, during the production process of the EVA film, the white masterbatch is mixed evenly with the raw material particles, and additives are added and stirred evenly before use.

[0005] However, in actual production, the feeding process is generally completed manually. During this period, the operator usually adds all the required white masterbatch in the material bags into the bucket at one time, and then adds other particles. The long time-consuming will cause different heating times and uneven heating of the particles in the bucket, resulting in different absorption capacities of the EVA particles for the additives and large fluctuations in the film performance, causing adverse effects. At the same time, due to the different addition sequences, the white masterbatch is prone to aggregation and difficult to be evenly mixed with the EVA raw material particles, increasing the stirring time and being unfavorable for efficient production. Content of the Utility Model

[0006] The main purpose of the utility model is to provide a feeding device for photovoltaic film production, which can effectively solve the problems in the background technique.

[0007] To achieve the above object, the technical solution adopted by the utility model is as follows:

[0008] A feeding device for photovoltaic film production, comprising a frame. Universal wheels are respectively provided at the four corner ends of the top surface of the frame, and a control box is further provided at the rear left side of the top surface of the frame. A feeding mechanism is provided on the top surface of the frame, and the feeding mechanism is jointly composed of a material suction and storage mechanism and a preheating and feeding mechanism. The material suction and storage mechanism includes a vacuum pump, a storage hopper, an air suction pipe, a valve and a material suction pipe. The vacuum pump is fixedly connected to the inner bottom of the frame. The air suction pipe is fixedly connected between the input end of the vacuum pump and the exhaust port on the side wall of the storage hopper, and the material suction pipe is fixedly connected to the first feed port on the side wall of the storage hopper. The valve is fixedly connected to the bottom end of the first discharge port at the bottom end of the storage hopper. The preheating and feeding mechanism includes a heating box, an air heater, a conveying pipe, a rotating shaft, a spiral blade and a speed regulating motor. The heating box is fixedly connected to the bottom end of the valve and is located on the right side of the top surface of the frame, and a group of symmetric air heaters are fixedly connected to the inner wall of the heating box. The conveying pipe is fixedly connected to the bottom end of the heating box, and the rotating shaft is movably connected to the inside of the conveying pipe through the rotating rods at both ends. A spiral blade is further fixedly connected to the outer wall of the rotating shaft. The speed regulating motor is fixedly connected to the left side of the conveying pipe, and the output end of the speed regulating motor is fixedly connected to the rotating rod.

[0009] Preferably, an exhaust port is fixedly installed on the left side wall of the storage hopper, a first feed port is fixedly installed at the top of the front wall of the storage hopper, a first discharge port is fixedly installed at the top end of the storage hopper, and a valve is fixedly installed at the bottom end of the first discharge port.

[0010] Preferably, the vacuum pump is fixedly installed on the inner bottom surface of the frame, an air suction pipe is fixedly installed between the input end of the vacuum pump and the exhaust port, and a material suction pipe is fixedly installed at the front end of the first feed port.

[0011] Preferably, a second feed port is fixedly installed on the top surface of the heating box, a second discharge port is fixedly installed on the bottom surface of the heating box, the heating box is fixedly installed on the right side of the top surface of the frame, the second feed port is fixedly installed at the bottom end of the valve, air heaters are respectively fixedly installed on the front and rear side walls inside the heating box, and a heat conduction hole plate is further fixedly installed on the inner side wall of the air heater.

[0012] Preferably, a third feed port is fixedly installed on the left side of the top surface of the conveying pipe, the third feed port is fixedly installed at the bottom surface of the second discharge port, a third discharge port is fixedly installed on the right side of the bottom surface of the conveying pipe, mounting holes are respectively opened on the left and right side walls of the conveying pipe, and bearings are fixedly installed in the holes of the mounting holes.

[0013] Preferably, rotating rods are fixedly installed at the left and right ends of the rotating shaft respectively, and the rotating rods are fixedly installed through bearings. A spiral blade is also fixedly installed on the outer wall of the rotating shaft. The speed regulating motor is fixedly installed on the left side wall of the conveying pipe, and the output end of the conveying pipe is fixedly installed with the rotating rod at the left end.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] In the utility model, the feeding mechanism composed of a material suction and storage mechanism and a preheating and feeding mechanism is used in cooperation with the feeding of photovoltaic film production. The material suction and storage mechanism can automatically suck and feed the white masterbatch in the material bag for storage by using the negative pressure suction method. After the preheating and feeding mechanism opens the valve to enable the white masterbatch to be transported and fed to enter the heating box, the air heater heats the inside of the heating box, and the white masterbatch can be preheated to a preset temperature, so that the white masterbatch can be evenly heated after being transported and fed into the bucket. The rotation speed of the rotating shaft is controlled by the speed regulating motor, so that the rotating shaft conveys materials to the materials through the spiral blade during rotation, so as to control the feeding speed of the white masterbatch, and the modified white masterbatch can be better mixed with the pure EVA particles evenly. Therefore, the feeding mechanism is used to replace the manual feeding method by automatically sucking materials and controlling the addition rate of the white masterbatch, which not only saves labor, but also improves production efficiency and ensures the stable quality of products. Description of the Drawings

[0016] Figure 1 is the overall structural schematic diagram of the utility model;

[0017] Figure 2 is the overall structural schematic diagram of the material suction and storage mechanism of the utility model;

[0018] Figure 3 is the structural split schematic diagram of the preheating and feeding mechanism of the utility model;

[0019] Figure 4 is the structural split schematic diagram of the feeding mechanism of the utility model.

[0020] In the figure: 1, frame; 2, universal wheel; 3, control box; 4, feeding mechanism; 5, suction storage mechanism; 6, preheating feeding mechanism; 7, vacuum pump; 8, storage hopper; 9, exhaust port; 10, first feeding port; 11, first discharging port; 12, suction pipe; 13, valve; 14, suction tube; 15, heating box; 16, second feeding port; 17, second discharging port; 18, air heater; 19, heat conducting orifice plate; 20, conveying pipe; 21, third feeding port; 22, third discharging port; 23, mounting hole; 24, bearing; 25, rotating shaft; 26, rotating rod; 27, spiral blade; 28, speed regulating motor. Detailed implementation mode

[0021] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with the specific implementation modes.

[0022] As Figure 1 - Figure 4 shown, a feeding device for photovoltaic film production includes a frame 1. Universal wheels 2 are respectively provided at the four corner ends of the top surface of the frame 1, and a control box 3 is also provided at the rear left side of the top surface of the frame 1. A feeding mechanism 4 is provided on the top surface of the frame 1, and the feeding mechanism 4 is jointly composed of a suction storage mechanism 5 and a preheating feeding mechanism 6. The suction storage mechanism 5 includes a vacuum pump 7, a storage hopper 8, a suction pipe 12, a valve 13 and a suction tube 14. The vacuum pump 7 is fixedly connected to the inner bottom of the frame 1. The suction pipe 12 is fixedly connected between the input end of the vacuum pump 7 and the exhaust port 9 on the side wall of the storage hopper 8. The suction tube 14 is fixedly connected to the first feeding port 10 on the side wall of the storage hopper 8. The valve 13 is fixedly connected to the bottom end of the first discharging port 11 at the bottom end of the storage hopper 8. The preheating feeding mechanism 6 includes a heating box 15, an air heater 18, a conveying pipe 20, a rotating shaft 25, a spiral blade 27 and a speed regulating motor 28. The heating box 15 is fixedly connected to the bottom end of the valve 13 and is located on the right side of the top surface of the frame 1. A group of symmetric air heaters 18 are fixedly connected to the inner wall of the heating box 15. The conveying pipe 20 is fixedly connected to the bottom end of the heating box 15. The rotating shaft 25 is movably connected to the inside of the conveying pipe 20 through the rotating rods 26 at both ends. A spiral blade 27 is also fixedly connected to the outer wall of the rotating shaft 25. The speed regulating motor 28 is fixedly connected to the left side of the conveying pipe 20, and the output end of the speed regulating motor 28 is fixedly connected to the rotating rod 26.

[0023] As Figure 2As shown, an exhaust port 9 is fixedly installed on the left side wall of the storage hopper 8, and a first feed inlet 10 is fixedly installed at the top of the front end wall of the storage hopper 8. A first discharge port 11 is also fixedly installed at the top end of the storage hopper 8, and a valve 13 is fixedly installed at the bottom end of the first discharge port 11. The provided storage hopper 8 is used for sucking and storing the white masterbatch material in the material bag. The air in the storage hopper 8 is discharged to the outside through the exhaust port 9, and the material can enter the storage hopper 8 through the first feed inlet 10;

[0024] As Figure 2 shown, the vacuum pump 7 is fixedly installed on the inner bottom surface of the frame 1, and a suction pipe 12 is fixedly installed between the input end of the vacuum pump 7 and the exhaust port 9. A suction pipe 14 is fixedly installed at the front end of the first feed inlet 10. Before feeding, one end of the suction pipe 14 is inserted into the material bag filled with white masterbatch material. By controlling the control box 3 to turn on the vacuum pump 7, the suction pipe 12 installed on the input end of the vacuum pump 7 will evacuate the storage hopper 8 through the exhaust port 9, and a negative pressure suction force will be generated in the storage hopper 8 during the evacuation process, causing the suction pipe 14 installed on the first feed inlet 10 to generate suction force, sucking the white masterbatch in the material bag into the suction pipe 14, and entering the storage hopper 8 through the first feed inlet 10 for feeding and storage to achieve the purpose of automatic suction. Both the suction pipe 12 and the suction pipe 14 are flexible hoses;

[0025] As Figure 3 shown, a second feed inlet 16 is fixedly installed on the top surface of the heating box 15, and a second discharge port 17 is fixedly installed on the bottom surface of the heating box 15. The heating box 15 is fixedly installed on the right side of the top surface of the frame 1. The second feed inlet 16 is fixedly installed at the bottom end of the valve 13. Air heaters 18 are respectively fixedly installed on the front and rear side walls inside the heating box 15, and heat conduction hole plates 19 are also fixedly installed on the inner side walls of the air heaters 18. When feeding the white masterbatch material, the valve 13 is opened so that the material in the storage hopper 8 will enter the heating box 15 through the second feed inlet 16. At this time, the air heaters 18 installed in the heating box 15 are controlled and turned on through the control box 3. The air heaters 18 will heat the air in the heating box 15 and transfer the heat to the white masterbatch material in the heating box 15 through the heat conduction hole plates 19. Therefore, the purpose of preheating can be achieved before mixing the white masterbatch until the heating temperature of the white masterbatch material in the heating box 15 reaches the preset value and the heating time reaches the preset value;

[0026] As Figure 4As shown in the figure, a third feed inlet 21 is fixedly installed on the left side of the top surface of the conveying pipe 20, and the third feed inlet 21 is fixedly installed on the bottom surface of the second discharge port 17. A third discharge port 22 is fixedly installed on the right side of the bottom surface of the conveying pipe 20. Mounting holes 23 are respectively formed on the left and right side walls of the conveying pipe 20, and bearings 24 are fixedly installed in the holes of the mounting holes 23. The heated white masterbatch material can enter the conveying pipe 20 through the third feed inlet 21, and the white masterbatch material can be conveyed into the equipment to be processed through the third discharge port 22. The bearing 24 installed in the mounting hole 23 enables the rotating rod 26 to perform a rotating operation;

[0027] As Figure 4 shown in the figure, rotating rods 26 are respectively fixedly installed at the left and right ends of the rotating shaft 25, and the rotating rods 26 are fixedly installed through the bearings 24. A spiral blade 27 is also fixedly installed on the outer wall of the rotating shaft 25. A speed regulating motor 28 is fixedly installed on the left side wall of the conveying pipe 20, and the output end of the conveying pipe 20 is fixedly installed with the rotating rod 26 at the left end. After the heated white masterbatch material enters the conveying pipe 20, the control box 3 will turn on the speed regulating motor 28 and control its speed. The speed regulating motor 28 drives the output end to drive the rotating rod 26 to rotate in the bearing 24. The rotating rod 26 will drive the rotating shaft 25 to rotate. The rotating shaft 25 will drive the spiral blade 27 on the outer wall to rotate, so that the spiral blade 27 will push the internal material to the right during rotation until the material is discharged through the third discharge port 22 and falls into the next processing equipment, thus replacing the manual feeding method for feeding, improving production efficiency and ensuring the quality stability of the product.

[0028] It should be noted that the present utility model is a feeding device for the production of photovoltaic encapsulant films. When feeding the white masterbatch material in the material bag during the production of photovoltaic encapsulant films, one end of the suction pipe 14 is inserted into the material bag, and the vacuum pump 7 installed at the inner bottom of the frame 1 is turned on through the control box 3. The suction pipe 12 installed on the input end of the vacuum pump 7 will perform a vacuum pumping process on the inside of the storage hopper 8 through the exhaust port 9, extract the air inside the storage hopper 8 and discharge it through the output end. After continuously performing vacuum pumping on the storage hopper 8, a negative pressure will appear inside the storage hopper 8, and a negative pressure suction force will be generated at the first feed port 10. Since the suction pipe 14 is connected to the first feed port 10, the suction pipe 14 will suck the material in the material bag into the pipe and make the material enter the storage hopper 8 through the first feed port 10. The storage hopper 8 stores the material to be fed. When feeding is required, when the valve 13 is opened, the material stored in the storage hopper 8 will be discharged into the heating box 15 through the second feed port 16 on the top surface of the heating box 15 through the suction pipe 12. After the material passing through the valve 13 reaches the preset flow rate, the valve 13 is closed and the air heaters 18 installed on the front and rear side walls inside the heating box 15 are turned on. The air heaters 18 will indirectly heat the internal material by heating the air inside the heating box 15, and the heat can be introduced into the heating box 15 through the heat conduction hole plates 19 installed on the inner side walls of the air heaters 18, and it can also prevent the material from entering the air heaters 18 and affecting the use of the air heaters 18 until the heating temperature of the white masterbatch material in the heating box 15 reaches the preset value and the heating time reaches the preset value. Therefore, the purpose of preheating can be achieved before mixing the white masterbatch, so that the modified white masterbatch can be better mixed evenly with the pure EVA particles. After the white masterbatch material in the heating box 15 is preheated, it will be discharged through the second discharge port 17 at the bottom and fed into the conveying pipe 20 through the third feed port 21. At this time, the speed control motor 28 installed on the left side wall of the conveying pipe 20 is turned on and controlled through the control box 3. The speed control motor 28 will drive the output end to drive the rotating rod 26 to rotate in the bearings 24 installed in the mounting holes 23 opened on the left and right side walls of the conveying pipe 20, and the rotating rod 26 will drive the rotating shaft 25 to rotate inside the conveying pipe 20. The rotating shaft 25 will drive the spiral blades 27 installed on the outer wall to rotate. During the rotation of the spiral blades 27, the material falling into the conveying pipe 20 and located in the gaps between the spiral blades 27 will also be pushed to the right side until the material is discharged into the processing equipment through the third discharge port 22. At the same time, the heated material in the heating box 15 will also automatically enter the conveying pipe 20 through the second discharge port 17 from the third feed port 21 for conveying. Therefore, by controlling the speed of the speed control motor 28, the slower the speed, the slower the feeding speed, and the faster the speed, the faster the feeding speed. Thus, the feeding mechanism 4 is set to adopt the method of automatic suction and control the addition rate of the white masterbatch to replace the manual feeding method for feeding,It not only saves labor, but also can improve production efficiency and ensure the stable quality of products.

[0029] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, various improvements can be made to it without departing from the scope of the present utility model, and components therein can be replaced with equivalents, or some of the technical features can be equivalently replaced. All within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A feeding device for photovoltaic film production, comprising a frame (1), wherein four corners of the top surface of the frame (1) are respectively provided with universal wheels (2), and a control box (3) is further provided at the rear left side of the top surface of the frame (1), characterized in that: The top surface of the frame (1) is provided with a feeding mechanism (4), and the feeding mechanism (4) is composed of a suction storage mechanism (5) and a preheating feeding mechanism (6), and the suction storage mechanism (5) includes a vacuum pump (7), a storage hopper (8), an air suction pipe (12), a valve (13) and a suction pipe (14), the vacuum pump (7) is fixedly connected to the bottom of the frame (1), the air suction pipe (12) is fixedly connected between the input end of the vacuum pump (7) and the exhaust port (9) on the side wall of the storage hopper (8), and the suction pipe (14) is fixedly connected to the first feeding port (10) on the side wall of the storage hopper (8), the valve (13) is fixedly connected to the bottom end of the first discharge port (11) at the bottom end of the storage hopper (8), and the preheating feeding mechanism (6) includes a heating box (1 5), an air heater (18), a conveying pipe (20), a rotating shaft (25), a spiral blade (27) and a speed regulating motor (28), wherein the heating box (15) is fixedly connected to the bottom end of the valve (13) and is located on the right side of the top surface of the frame (1), and a group of symmetrical air heaters (18) are fixedly connected to the inner wall of the heating box (15), the conveying pipe (20) is fixedly connected to the bottom end of the heating box (15), and the rotating shaft (25) is movably connected to the conveying pipe (20) through rotating rods (26) at both ends, and the outer wall of the rotating shaft (25) is also fixedly connected to the spiral blade (27), and the speed regulating motor (28) is fixedly connected to the left side of the conveying pipe (20), and the output end of the speed regulating motor (28) is fixedly connected to the rotating rod (26).

2. The feeding device for photovoltaic film production according to claim 1, characterized in that: An exhaust port (9) is fixedly mounted on the left side wall of the storage hopper (8), and a first feed port (10) is fixedly mounted on the top of the front end wall of the storage hopper (8). A first discharge port (11) is also fixedly mounted on the top of the storage hopper (8), and a valve (13) is fixedly mounted at the bottom end of the first discharge port (11).

3. The feeding device for photovoltaic film production according to claim 2, characterized in that: The vacuum pump (7) is fixedly mounted on the inner bottom surface of the frame (1), and an air suction pipe (12) is fixedly mounted between the input end of the vacuum pump (7) and the exhaust port (9), and a material suction pipe (14) is fixedly mounted at the front end of the first feed port (10).

4. The feeding device for photovoltaic film production according to claim 3, characterized in that: A second feed port (16) is fixedly mounted on the top surface of the heating box (15), and a second discharge port (17) is fixedly mounted on the bottom surface of the heating box (15); the heating box (15) is fixedly mounted on the right side of the top surface of the frame (1), and the second feed port (16) is fixedly mounted on the bottom end of the valve (13); air heaters (18) are fixedly mounted on the front and rear side walls of the interior of the heating box (15), and a heat conduction orifice plate (19) is also fixedly mounted on the inner side wall of the air heater (18).

5. The feeding device for photovoltaic film production according to claim 4, characterized in that: A third feed port (21) is fixedly mounted on the left side of the top surface of the conveying pipe (20), and the third feed port (21) is fixedly mounted on the bottom surface of the second discharge port (17). A third discharge port (22) is fixedly mounted on the right side of the bottom surface of the conveying pipe (20). Mounting holes (23) are respectively provided on the left and right side walls of the conveying pipe (20), and bearings (24) are fixedly mounted in the mounting holes (23).

6. The feeding device for photovoltaic film production according to claim 5, characterized in that: The left and right ends of the rotating shaft (25) are respectively fixedly mounted with rotating rods (26), and the rotating rods (26) and the bearings (24) are interlaced and fixedly mounted together. A spiral blade (27) is also fixedly mounted on the outer wall of the rotating shaft (25). The speed regulating motor (28) is fixedly mounted on the left side wall of the conveying pipe (20), and the output end of the conveying pipe (20) is fixedly mounted together with the rotating rod (26) at the left end.

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