Bubble-removing stirring mechanism for photovoltaic backboard film production

Abstract

The utility model discloses a bubble-removing stirring mechanism for photovoltaic backboard film production, which belongs to the technical field of chemical film production equipment, and comprises a melting tank, a sealing cover hinged on the melting tank and used for sealing, and an exhaust pipe fixedly inserted on the sealing cover in a penetrating manner, and the air pump is fixed on the sealing cover and is used for pumping out air in the melting tank. According to the utility model, the transverse shaft is transversely arranged in the melting tank, and the concave material turning sheet and the elastic shifting sheet are matched for use, so that the material turning sheet can be always submerged in raw materials when stirring the raw materials, air in the tank is prevented from being mixed into pasty raw materials, the content of bubbles in the pasty raw materials is reduced, and the production efficiency is improved. And the air pump is matched to suck negative pressure in the melting tank, so that small bubbles in the pasty raw materials overflow under the action of pressure difference, the bubbles in the pasty raw materials are removed, and the bubbles are prevented from affecting the subsequent film condensation forming quality.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical film production equipment, in particular to a bubble removal and stirring mechanism for photovoltaic backboard film production. Background Art

[0002] Photovoltaic backsheet film is a protective or antireflective coating applied to the backsheet surface of solar cell modules. It can be categorized as antireflective, antireflective, fluorinated, or conductive films. PET film, used as the substrate for photovoltaic backsheet film production, is prepared by melting raw material pellets, extruding the melt, stretching and orienting the film, cooling and solidifying it, coiling it, surface treating it, and testing it.

[0003] Since the raw materials are continuously stirred during the process of heating and melting the raw materials into a paste, all the raw materials can be heated evenly, thereby improving the efficiency of melting the raw materials. However, some tiny bubbles will be mixed into the paste due to stirring, which can easily affect the quality of the PET film. Utility Model Content

[0004] The purpose of the utility model is to provide a bubble removal and stirring mechanism for photovoltaic backplane film production, so as to solve the problem in the above background technology that the paste raw material may be mixed with some tiny bubbles due to stirring, which may easily affect the quality of the PET film.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The utility model provides a debubble stirring mechanism for photovoltaic backsheet film production, comprising a melting tank and a sealing cover hingedly connected to the melting tank for sealing. The debubble stirring mechanism for photovoltaic backsheet film production also includes:

[0007] An air extraction tube is fixedly inserted into the sealing cover.

[0008] An air pump fixed on the sealing cover is used to extract air from the melting tank.

[0009] A plurality of transverse shafts arranged in the melting tank are radially rotated.

[0010] Two turning pieces are fixed on the outside of the horizontal shaft and are used for turning the raw materials vertically and circumferentially.

[0011] A transmission tooth is fixed to one end of the horizontal shaft.

[0012] A transmission member is fixed to the outside of the melting tank, and is used to synchronously link the rotation of a plurality of the transmission teeth.

[0013] A driving member is used to drive the transmission member to operate.

[0014] A bottom rotating disc is arranged at the bottom of the melting tank.

[0015] A plurality of elastic tabs are radially fixed on the bottom rotating disc, and the elastic tabs are used for horizontally and circumferentially pushing the raw materials.

[0016] A driving part is used for driving the rotation of the bottom rotating disc.

[0017] Further, the turning-over tab and the transmission tooth are respectively arranged inside and outside the melting tank, and one side of the turning-over tab is concave.

[0018] Further, the horizontal shaft is below the middle line of the melting tank, and the distance between the horizontal shaft and the elastic tabs is smaller than the width of the turning-over tab.

[0019] Further, the transmission member comprises:

[0020] A ring sleeve is fixedly arranged outside the melting tank, and the inner wall of the ring sleeve and the outside of the melting tank form a transmission groove.

[0021] A gear ring is rotatably arranged in the transmission groove.

[0022] A plurality of elastic clamping blocks are fixedly arranged at the bottom of the gear ring, and the bottom ends of the elastic clamping blocks are clamped with a ring groove arranged at the bottom of the transmission groove.

[0023] Further, the driving member comprises a driving motor fixedly arranged outside the ring sleeve, and a spur gear is fixedly arranged at the output end of the driving motor.

[0024] Further, the outer part and the top part of the gear ring are both tooth surfaces, and the spur gear and the transmission tooth are respectively engaged with the two tooth surfaces of the gear ring.

[0025] Compared with the prior art, the above one or more technical solutions have the following beneficial effects:

[0026] 1. The horizontal horizontal shaft, the concave turning-over tab and the elastic tab are used in cooperation, so that the turning-over tab can be always submerged in the raw materials when stirring the raw materials, the air in the tank is avoided from being stirred and mixed into the paste-like raw materials, the bubble content in the paste-like raw materials is reduced, the negative pressure in the melting tank is extracted by the air pump, the small bubbles in the paste-like raw materials overflow under the action of the pressure difference, the bubbles in the paste-like raw materials are removed, and the quality of the subsequent film condensation forming is avoided from being affected by the bubbles.

[0027] 2. The utility model discloses a horizontal shaft drives the circumferential rotation of material turning piece, realize the vertical turning of raw material, and cooperate the horizontal rotation of elastic poking piece that bottom turntable drives, realize the horizontal turning of raw material, improve the uniformity of raw material turning and stirring, and the material turning piece will contact with the elastic poking piece in the process of stirring raw material, realize poking elastic poking piece high -frequency swing, further in the horizontal direction poking raw material, make raw material particle heat even, improve raw material melting efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is the front view of the utility model;

[0029] Figure 2 It is the overhead view of the utility model;

[0030] Figure 3 It is the front half cutaway view of the utility model;

[0031] Figure 4 For Figure 3 It is the enlarged view of A part in the middle.

[0032] In the drawing: 1. melting tank;2. closing cover;3. air pump;4. air extraction pipe;5. horizontal shaft;6. material turning piece;7. transmission tooth;8. bottom turntable;9. elastic poking piece;10. transmission piece;101. ring sleeve;102. transmission groove;103. ring groove;104. elastic clamping block;105. tooth ring;11. driving part;12. discharge pipe;13. driving part. DETAILED DESCRIPTION

[0033] In order to make the personnel in the technical field better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application.

[0034] As Figures 1 to 4 Illustrated, a kind of gas bubble removal stirring mechanism for photovoltaic backsheet film production, including melting tank 1 and hinged on melting tank 1 for closing closing cover 2, closing cover 2 and melting tank 1 between being provided with child-mother lock buckle, so as to be completely closed when melting raw material particle, the pouring opening of melting tank 1, realize sealed heat insulation, the bottom of the outside of melting tank 1 is fixedly inserted with discharge pipe 12, discharge pipe 12 is provided with heat-resistant valve at feed inlet, so as to discharge the paste-like raw material in melting tank 1, gas bubble removal stirring mechanism for photovoltaic backsheet film production also includes:

[0035] Air extraction pipe 4 is fixedly inserted on closing cover 2.

[0036] Air pump 3 is fixed on closing cover 2, and air pump 3 is used to extract air in melting tank 1.

[0037] A plurality of horizontal shafts 5 are radially rotated in melting tank 1.

[0038] Two material turning blades 6 are fixed outside the horizontal shaft 5 for vertically and circumferentially turning the raw material.

[0039] A transmission tooth 7 is fixed at one end of the horizontal shaft 5.

[0040] A transmission member 10 is fixed outside the melting tank 1, and the transmission member 10 is used to synchronously drive the rotation of the plurality of transmission teeth 7.

[0041] A driving member 11 is used to drive the transmission member 10 to rotate.

[0042] A bottom turntable 8 is arranged at the bottom of the melting tank 1.

[0043] A plurality of elastic turning blades 9 are radially fixed on the bottom turntable 8, and the elastic turning blades 9 are used to horizontally and circumferentially turn the raw material. The distance between the elastic turning blades 9 and the horizontal shaft 5 is smaller than the width of the material turning blade 6, so that when the two collide with each other, the elastic turning blades 9 will vibrate at a high frequency, which can push the raw material particles to move and change positions in the horizontal direction, and improve the uniformity of the raw material particles in the horizontal direction.

[0044] A driving part 13 is used to drive the rotation of the bottom turntable 8, and the driving part 13 includes a servo motor fixed at the bottom of the melting tank 1 and a vertical shaft arranged at the bottom of the melting tank 1. The two ends of the vertical shaft are respectively fixed at the bottom of the bottom turntable 8 and the output end of the servo motor.

[0045] A certain amount of raw material particles is poured into the melting tank 1, so that the height of the raw material particles is higher than the median line of the melting tank 1. Then, the sealing cover 2 is closed and fixed at the opening of the melting tank 1 by the primary and secondary lock buckles, so as to realize sealing and heat insulation. Then, the melting tank 1, the driving member 11 and the driving part 13 are started to generate heat inside, so that the raw material particles are melted into a paste. In this process, the driving member 11 drives the transmission member 10 to rotate, so as to synchronously drive all the transmission teeth 7 and the horizontal shaft 5 to rotate in the same direction, so that the horizontal shaft 5 drives the material turning blade 6 to rotate in the vertical direction, thereby turning the raw material up and down. At the same time, the driving part 13 drives the bottom turntable 8 to rotate, and the bottom turntable 8 drives the elastic turning blades 9 on it to rotate in the horizontal direction, thereby turning the raw material in the horizontal direction, improving the uniformity of the raw material particles and the melting efficiency of the raw material.

[0046] In this embodiment, the material turning blade 6 and the transmission tooth 7 are respectively arranged inside and outside the melting tank 1, and one side of the material turning blade 6 is concave. Under the premise of ensuring the sealing of the melting tank 1, the concave material turning blade 6 can better turn the raw material particles in the vertical direction and improve the turning efficiency of the raw material particles in the vertical direction. In combination with the flow turning of the raw material particles in the horizontal direction, the raw material particles can be moved to any position in the melting tank 1, so that all the raw material particles are uniformly heated, thereby improving the melting efficiency.

[0047] In this embodiment, the horizontal shaft 5 is below the midline of the melting tank 1, and the distance between the horizontal shaft 5 and the elastic tab 9 is less than the width of the stirring tab 6. In this way, the accumulated raw material particles can be completely submerged after melting into paste, so that the stirring tab 6 can not mix air in the melting tank 1 into the paste during stirring, reducing the effect of stirring on the bubble removal of the paste. The negative pressure in the melting tank 1 is extracted by the air pump 3, so that the fine bubbles in the paste are overflowed from the paste under the action of the air pressure difference, improving the bubble removal effect of the paste and avoiding the quality of the film forming in the later stage.

[0048] In this embodiment, the transmission member 10 includes:

[0049] The fixed sleeve is arranged outside the melting tank 1, and the inner wall of the ring sleeve 101 and the outside of the melting tank 1 form a transmission groove 102.

[0050] The gear ring 105 is rotatably arranged in the transmission groove 102.

[0051] The elastic clamping block 104 is fixed to the bottom of the gear ring 105, and the bottom end of the elastic clamping block 104 is clamped with the ring groove 103 arranged in the bottom of the transmission groove 102.

[0052] When the driving member 11 is started, it drives the gear ring 105 to rotate, which drives all the transmission teeth 7 and the horizontal shaft 5 to rotate synchronously, and the rotating horizontal shaft 5 drives the stirring tab 6 to rotate in the vertical direction, improving the position exchange efficiency of the raw material in the vertical direction and improving the uniformity of the raw material particles.

[0053] In this embodiment, the driving member 11 includes a driving motor fixed outside the ring sleeve 101, and the output end of the driving motor is fixedly provided with a spur gear. By starting the driving motor, the power of the output end is transmitted to the horizontal shaft 5 through the spur gear, the gear ring 105, the transmission teeth 7, so that it drives the stirring tab 6 to rotate in the vertical direction, improving the flow and turnover efficiency of the raw material particles.

[0054] In this embodiment, the outer and top of the gear ring 105 are tooth surfaces, and the spur gear and the transmission teeth 7 are respectively engaged with the two tooth surfaces of the gear ring 105. In this way, the gear ring 105 can be engaged with the spur gear and the transmission teeth 7 at the same time, the power transmission direction is changed, and all the horizontal shafts 5 are driven to rotate at the same time.

[0055] The above merely describes preferred embodiments of the present application, and parts not described in the present application can be implemented or referenced by using or borrowing existing technology. Of course, the above description is not a limitation on the present application, and the present application is not limited to the above examples. Changes, modifications, additions or substitutions made by those skilled in the art within the spirit and scope of the present application should also be within the protection scope of the present application.

Claims

1. A debubbling and stirring mechanism for photovoltaic backsheet film production, comprising a melting tank (1) and a sealing cover (2) hingedly connected to the melting tank (1) for sealing, characterized in that: The debubbling and stirring mechanism for producing photovoltaic backsheet film further comprises: an air extraction pipe (4) fixedly inserted into the sealing cover (2); an air pump (3) fixed on the sealing cover (2), the air pump (3) being used to extract air from the melting tank (1); Radially rotating a plurality of transverse shafts (5) disposed in the melting tank (1); Two turning pieces (6) fixed to the outside of the horizontal shaft (5) for turning the raw material vertically and circumferentially; a transmission tooth (7) fixed to one end of the transverse shaft (5); A transmission member (10) fixed to the outside of the melting tank (1), the transmission member (10) being used to synchronously link the rotation of a plurality of the transmission teeth (7); A driving member (11) for driving the transmission member (10) to operate; Rotating a bottom turntable (8) provided at the bottom of the melting tank (1); A plurality of elastic paddles (9) radially fixed on the bottom turntable (8), the elastic paddles (9) being used to paddle the raw material in a horizontal circumferential direction; A driving part (13) is used for driving the bottom turntable (8) to rotate.

2. The debubble stirring mechanism for photovoltaic backsheet film production according to claim 1, characterized in that: The turning piece (6) and the transmission gear (7) are respectively located inside and outside the melting pot (1), and one side of the turning piece (6) is an inner concave surface.

3. The debubble stirring mechanism for photovoltaic backsheet film production according to claim 2, characterized in that: The transverse axis (5) is located below the midline of the melting tank (1), and the distance between the transverse axis (5) and the elastic paddle (9) is smaller than the width of the flipping piece (6).

4. The debubble stirring mechanism for photovoltaic backsheet film production according to claim 3, characterized in that: The transmission member (10) comprises: A ring sleeve (101) is fixedly mounted on the outside of the melting tank (1), wherein the inner wall of the ring sleeve (101) and the outside of the melting tank (1) are combined to form a transmission groove (102); a gear ring (105) rotatably sleeved in the transmission groove (102); A plurality of elastic clamping blocks (104) are fixed to the bottom of the gear ring (105), and the bottom ends of the elastic clamping blocks (104) are clamped with the annular groove (103) provided at the bottom of the transmission groove (102).

5. The debubble stirring mechanism for photovoltaic backsheet film production according to claim 4, characterized in that: The driving member (11) comprises a driving motor fixed to the outside of the ring sleeve (101), and a spur gear is fixedly provided at the output end of the driving motor.

6. The debubbling and stirring mechanism for photovoltaic backsheet film production according to claim 5, characterized in that: The outside and top of the gear ring (105) are both tooth surfaces, and the flat gear and the transmission teeth (7) are respectively engaged with the two tooth surfaces of the gear ring (105).

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