A film blowing stirring tank

Abstract

The utility model relates to a kind of film blowing stirring box, including stirring box, upper cover, stirring shaft, motor, two groups of symmetrically arranged arc frame and heating seat;The upper cover is fixed on the upper end of stirring box by bolt, stirring shaft rotates and penetrates the upper end of stirring box, and rotates by motor driving, the arc frame is connected in stirring box both sides, and the butt face of two groups of arc frame is equipped with L type clamping edge, heating seat is clamped in the upper end gap of L type clamping edge by the clamping groove of back, and two groups of L type clamping edge are clamped and limited, the built-in electric heating wire of heating seat, its upper end is equipped with suction fan, the butt joint of the clamping groove of front heating seat and L type clamping edge contact surface is equipped with interface, the upper end of back heating seat is equipped with connecting pipe, and connecting pipe is rotatably connected with the upper end of stirring shaft by sealing bearing.The utility model is heated to the material in the box by two-way uniform heating of "outer side+center", solve the problem of big temperature difference of traditional equipment, ensure the mixing effect of material, finally improve the product control.

Description

Technical Field

[0001] This utility model relates to the field of PE protective film production, and in particular to a blown film mixing box. Background Technology

[0002] PE protective film, due to its excellent weather resistance and flexibility, is widely used in electronics, building materials, packaging, and other fields, and market demand continues to grow. In its production, the extrusion blown film process is the core step, and the quality of raw material mixing directly determines the uniformity and mechanical properties of the film. It is necessary to thoroughly mix PE granules, antioxidants, toughening agents, and other components to ensure melt stability during subsequent extrusion molding. Currently, commonly used mixing tanks in the industry have the following technical challenges: temperature control during the mixing process relies on external heating pipes, resulting in a temperature difference within the tank fluctuating by around 10°C. Such a temperature difference affects the final mixing effect of the PE protective film raw materials, ultimately impacting product quality control. Utility Model Content

[0003] To address the technical problem mentioned above, where uneven heating during the production of existing PE protective films affects final quality control.

[0004] This utility model provides: a blown film mixing box, including a mixing box, a top cover, a mixing shaft, a motor, two sets of symmetrically arranged arc-shaped frames and a heating seat; the top cover is fixed to the upper end of the mixing box by bolts, the mixing shaft rotates through the upper end of the mixing box and is driven to rotate by the motor, the arc-shaped frames are snapped onto both sides of the mixing box, the mating surfaces of the two sets of arc-shaped frames are provided with L-shaped retaining ridges, the heating seat is snapped onto the upper notch of the L-shaped retaining ridges through a slot on the back, and the two sets of L-shaped retaining ridges are snapped and limited in position, the heating seat has a built-in electric heating wire, and an exhaust fan is provided at its upper end, the slot of the heating seat on the front and the contact surface of the L-shaped retaining ridges are provided with an interface, the upper end of the heating seat on the back is provided with a connecting pipe, and the connecting pipe is rotatably connected to the upper end of the mixing shaft through a sealed bearing.

[0005] Preferably, the inner wall of the arc-shaped frame is provided with a heat-conducting sheet, and the outer wall of the arc-shaped frame is provided with a heat insulation layer. The heat insulation layer effectively prevents heat loss, and the exhaust fan, together with the electric heating wire, forms a hot air circulation, reducing energy consumption and improving heating efficiency.

[0006] Preferably, the air intake end of the exhaust fan is equipped with a filter screen to prevent dust from entering the heating system, avoid raw material contamination, and ensure product quality.

[0007] Preferably, one side of the L-shaped locking ridge is provided with a guide pin and the other side is provided with a guide groove. The two sets of arc-shaped frames are connected and fitted together by the guide pin and the guide groove. The arc-shaped frames are precisely connected by the L-shaped locking ridge, the guide pin and the guide groove. The heating seat is quickly snapped into place by the locking groove, which facilitates equipment maintenance and cleaning.

[0008] Preferably, the upper end of the heating base is provided with a switch group for controlling the start and stop of the electric heating wire and the exhaust fan.

[0009] Preferably, the motor is fixed to the upper cover by a motor frame, and meshing gears are fixedly sleeved on both the motor power end and the outside of the stirring shaft.

[0010] Preferably, stirring rods are evenly arranged on the surface of the stirring shaft located in the inner cavity of the mixing tank, the stirring rods are connected to the inner cavity of the stirring shaft, and heat-conducting plates are attached to the outer wall of the stirring rods.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention delivers heating air to the inner cavity of the arc-shaped frame via a front heating seat through an interface, which, together with the heat-conducting plates on the inner wall of the arc-shaped frame, heats the raw materials on the outside of the mixing tank. The rear heating seat delivers heating air to the inner cavity of the stirring shaft via a connecting pipe, which, through the heat-conducting plates on the outer wall of the stirring shaft, heats the raw materials on the inside. This achieves bidirectional uniform heating of the raw materials in the tank from the outside to the center, solving the problem of large temperature differences in traditional equipment and ensuring the mixing effect of the raw materials. Attached Figure Description

[0012] Figure 1 This is a front view of the structure of this utility model; Figure 2 This is a diagram showing the rear structure of the present invention; Figure 3 This is a diagram showing the disassembled structure of the arc-shaped frame of this utility model; Figure 4 This is a top view of the arc-shaped frame of this utility model; Figure 5 This is a diagram illustrating the stirring shaft of this utility model.

[0013] Explanation of key symbols: 1-Mixing tank, 2-Top cover, 3-Mixing shaft, 301-Mixing rod, 4-Motor, 401-Motor frame, 402-Gear, 5-Arc frame, 6-L-shaped retaining rib, 601-Guide pin, 602-Guide groove, 7-Heating seat, 701-Retaining slot, 702-Switch assembly, 8-Exhaust fan, 9-Connecting interface, 10-Connecting pipe. Detailed Implementation

[0014] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0015] In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Please combine Figure 1-5 A blown film mixing box includes a mixing box 1, a top cover 2, a mixing shaft 3, a motor 4, two sets of symmetrically arranged arc-shaped frames 5, and a heating seat 7. The top cover 2 is fixed to the upper end of the mixing box 1 by bolts. The mixing shaft 3 rotates through the upper end of the mixing box 1 and is driven to rotate by the motor 4. The arc-shaped frames 5 are snapped onto both sides of the mixing box 1. The mating surfaces of the two sets of arc-shaped frames 5 are provided with L-shaped retaining ridges 6. The heating seat 7 is snapped onto the upper notch of the L-shaped retaining ridges 6 through a retaining groove 701 on the back, and the two sets of L-shaped retaining ridges 6 are snapped and limited. The heating seat 7 has an internal electric heating wire and an exhaust fan 8 at its upper end. The contact surface between the retaining groove 701 and the L-shaped retaining ridge 6 of the front heating seat 7 is provided with an interface 9. The upper end of the rear heating seat 7 is provided with a connecting pipe 10, which is rotatably connected to the upper end of the mixing shaft 3 through a sealed bearing.

[0019] Based on this, the upper cover 2 is fixed to the upper end of the mixing tank 1 with bolts, allowing the stirring shaft 3 to rotate through the upper end of the mixing tank 1. The motor 4 is fixed to the upper cover 2 via the motor frame 401, and the power end of the motor 4 meshes with the gear 402 on the outside of the stirring shaft 3, ensuring that the motor 4 can drive the stirring shaft 3 to rotate. Then, two sets of symmetrical arc-shaped frames 5 are fitted onto both sides of the mixing tank 1, so that the guide pin 601 of one set of arc-shaped frames 5 is inserted into the guide groove 602 of the other set. The L-shaped locking rib 6 guides the precise connection, ensuring that the two sets of arc-shaped frames 5 fit tightly. Subsequently, the heating seats 7 on the front and back are respectively inserted into the notch at the upper end of the L-shaped locking rib 6, so that the locking groove 701 of the heating seat 7 is engaged and fixed with the L-shaped locking rib 6; the connecting pipe 10 of the back heating seat 7 is connected to the upper end of the stirring shaft 3 through a sealed bearing, ensuring sealing during rotation.

[0020] Based on this, when using this utility model, the electric heating wire and the exhaust fan 8 are turned on by the switch group 702. The exhaust fan 8 draws in air through the filter screen and is heated by the electric heating wire. The hot air from the front heating seat 7 enters the inner cavity of the arc frame 5 through the interface 9, and is transferred to the outside of the mixing box 1 through the heat-conducting plate on the inner wall of the arc frame 5, heating the raw materials near the outer side. The hot air from the rear heating seat 7 enters the inner cavity of the stirring shaft 3 through the connecting pipe 10, and is transferred to the central area of ​​the mixing box 1 through the heat-conducting plate on the outer side of the stirring rod 301 on the outer wall of the stirring shaft 3, heating the raw materials near the inner side. Then, the motor 4 drives the gear 402 at the power end and meshes with the gear 402 on the outer side of the stirring shaft 3, causing the stirring shaft 3 to rotate and stir the raw materials.

[0021] Based on this, by using bidirectional heating in conjunction with the rotation of the stirring shaft 3, the PE particles, antioxidants and other components are heated evenly in the mixing box 1, and mixed more thoroughly, providing a stable melt raw material for subsequent extrusion molding, and improving the mechanical properties and quality control of the PE protective film.

[0022] Based on this, it should also be added that during disassembly, the heating seat 7 can be removed from the upper end of the L-shaped retaining 6 to separate the arc frame 5, making it easy to clean the outer wall of the mixing tank 1 and the heat-conducting plates inside the arc frame 5.

[0023] Therefore, it is also necessary to add that staff can regularly replace the filter screen at the air intake end of the exhaust fan 8 to prevent dust accumulation from affecting heating efficiency or contaminating raw materials.

[0024] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

[0025] In the description of this utility model, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

Claims

1. A blown film mixing tank, characterized in that, The assembly includes a mixing tank (1), a top cover (2), a stirring shaft (3), a motor (4), two sets of symmetrically arranged arc-shaped frames (5), and a heating seat (7). The top cover (2) is fixed to the upper end of the mixing tank (1) by bolts. The stirring shaft (3) rotates through the upper end of the mixing tank (1) and is driven to rotate by the motor (4). The arc-shaped frames (5) are snapped onto both sides of the mixing tank (1). The mating surfaces of the two sets of arc-shaped frames (5) are provided with L-shaped locking ridges (6). The heating seat (7) is snapped onto the notch at the upper end of the L-shaped locking ridges (6) through the slot (701) on the back side, and the two sets of L-shaped locking ridges (6) are snapped and limited. The heating seat (7) has an electric heating wire inside and an exhaust fan (8) is provided at its upper end. The slot (701) of the heating seat (7) on the front side and the contact surface of the L-shaped locking ridges (6) are provided with a mating interface (9). The upper end of the heating seat (7) on the back side is provided with a connecting pipe (10). The connecting pipe (10) is rotatably connected to the upper end of the stirring shaft (3) through a sealed bearing.

2. The blown film mixing tank according to claim 1, characterized in that, The inner wall of the arc-shaped frame (5) is provided with a heat-conducting sheet, and the outer wall of the arc-shaped frame (5) is provided with a heat insulation layer.

3. The blown film mixing tank according to claim 2, characterized in that, The exhaust fan (8) has a filter screen at the air inlet end.

4. The blown film mixing tank according to claim 3, characterized in that, The L-shaped rib (6) has a guide pin (601) on one side and a guide groove (602) on the other side. The two sets of arc frames (5) are connected and fitted with the guide pin (601) and the guide groove (602).

5. A blown film mixing tank according to claim 4, characterized in that, The upper end of the heating base (7) is provided with a switch group (702) for controlling the start and stop of the electric heating wire and the exhaust fan (8).

6. A blown film mixing tank according to claim 5, characterized in that, The motor (4) is fixed to the upper cover (2) by the motor frame (401), and the power end of the motor (4) and the outside of the stirring shaft (3) are both fitted with meshing gears (402).

7. A blown film mixing tank according to claim 6, characterized in that, The stirring shaft (3) is located on the surface of the inner cavity of the stirring box (1) and stirring rods (301) are evenly arranged. The stirring rods (301) are connected to the inner cavity of the stirring shaft (3) and heat-conducting plates are attached to the outer wall of the stirring rods (301).

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