A raw material mixing device for plastic packaging film production

Abstract

The utility model discloses a raw material mixing device for plastic packaging film production, including mixing jar, the top of mixing jar is equipped with the top cover through the flange, the raw material mixing stirring device is rotatively installed on the top cover.

Description

Technical Field

[0001] This utility model relates to the field of plastic packaging film production technology, specifically to a raw material mixing device for plastic packaging film production. Background Technology

[0002] The production and processing of plastic packaging film requires the uniform mixing of plastic raw materials (such as PE, PP, PVC, etc.) to ensure that the produced packaging film has stable material properties.

[0003] The prior art, disclosed in patent document CN218365839U, presents the following technical solution: a raw material mixing device for producing plastic packaging film, comprising a machine body, a stirring chamber fixedly disposed on the inner side wall of the machine body, a first motor fixedly disposed at the middle of the upper end of the machine body, a first transmission wheel fixedly connected to the output end of the first motor, two second transmission wheels being connected to the first transmission wheel via a transmission belt, stirring blades fixedly connected to the inner side walls of the first transmission wheel and the two second transmission wheels, a second motor fixedly disposed at the lower end of one side wall of the machine body, a threaded screw fixedly connected to the output end of the second motor, and a sliding seat slidably sleeved on the outer wall of the threaded screw.

[0004] The above technical solution discharges the mixed raw materials through the first conveying pipe, and the mixing chamber is sealed, which makes it inconvenient to clean the viscous raw materials adhering to the inner cavity of the machine, resulting in waste and difficulty in cleaning. Utility Model Content

[0005] The purpose of this invention is to provide a raw material mixing device for the production of plastic packaging film, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a raw material mixing device for the production of plastic packaging film, comprising a mixing tank, a top cover installed on the top of the mixing tank via a flange, and a raw material mixing and stirring device rotatably mounted on the top cover.

[0007] The raw material mixing and stirring device includes a stirring shaft, which is vertically installed inside the mixing tank. A propeller blade is fixedly connected above the stirring shaft, and a shearing blade is provided in the circumferential direction below the stirring shaft. The outer side of the shearing blade is provided with serrations.

[0008] In the above technical solution, a propeller blade is set above the stirring shaft for pre-dispersing the raw materials, and a shear blade is set below it. The shear blade has serrations for breaking up agglomerates, and the inclined design enhances radial mixing.

[0009] Connecting plates are fixedly connected to the upper and lower sides of both sides of the stirring shaft. An L-shaped scraper is inserted into one end of the outer side of each connecting plate. Locking grooves are provided on the upper and lower sides of the outer side of each connecting plate. Mounting cavities are provided on the L-shaped scraper and on both the upper and lower sides of the connecting plate. Insertion holes are provided at the other end of each mounting cavity. Trapezoidal mounting plates are slidably connected to each mounting cavity. Locking rods are fixedly connected to the left and right sides of the trapezoidal mounting plate near the connecting plate. Through grooves are provided on the left and right sides of the insertion holes near the connecting plate. Insertion rods are inserted into each insertion hole. The insertion rods are pressed by the trapezoidal mounting plates so that the locking rods pass through the through grooves and are inserted into the locking grooves.

[0010] In the above technical solution, the top cover and the raw material mixing and stirring device are connected to the mixing tank through flanges, and can be separated by disassembly in the future. The L-shaped scrapers at both ends are connected to the connecting plate by plugging, which not only makes the connection stable, but also makes it easy to replace the worn L-shaped scrapers and improve the scraping effect.

[0011] As a further preferred embodiment of this technical solution, a discharge pipe is provided at the discharge port at the bottom of the mixing tank, and a valve is installed on the outside of the discharge pipe.

[0012] As a further preferred embodiment of this technical solution, a feeding channel is installed on one side of the upper end of the top cover.

[0013] As a further preferred embodiment of this technical solution, a stirring motor is installed at the upper end of the stirring shaft, and the stirring motor is located at the top of the top cover.

[0014] As a further preferred embodiment of this technical solution, the side of the L-shaped scraper closest to the inner wall of the mixing tank is in contact with the inner wall of the mixing tank.

[0015] In the above technical solution, the L-shaped scrapers on both sides can scrape off the raw materials adhering to the inner wall of the mixing tank, which facilitates the subsequent cleaning of the mixing tank and reduces waste when discharging raw materials.

[0016] As a further preferred embodiment of this technical solution, the side of the insertion rod that contacts the trapezoidal mounting plate is designed as an inclined surface, and a mounting circular plate is fixedly connected to the outer side of the insertion rod. The mounting circular plate is connected to the L-shaped scraper by screws.

[0017] As a further preferred embodiment of this technical solution, springs are provided between the trapezoidal mounting plate and the circular groove at the bottom for resetting the trapezoidal mounting plate.

[0018] In the above technical solution, the spring is designed to allow the locking rod to automatically disengage from the locking groove after the insertion rod is pulled out.

[0019] This utility model provides a raw material mixing device for the production of plastic packaging film, which has the following advantages:

[0020] (1) This utility model provides a propeller blade above the stirring shaft for pre-dispersing the raw materials, and a shear blade below with serrations for breaking up clumps. The inclined design enhances radial mixing. The L-shaped scrapers on both sides can scrape off the raw materials that stick to the inner wall of the mixing tank, which facilitates the subsequent cleaning of the mixing tank and reduces waste when feeding raw materials.

[0021] (2) The present invention is connected to the mixing tank by the installed top cover and the raw material mixing and stirring device through the flange. It can be separated by disassembly in the future. The L-shaped scrapers at both ends are connected to the connecting plate by plugging. The connection is not only stable, but also easy to replace the worn L-shaped scrapers, thus improving the scraping effect. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a partial cross-sectional view of the present invention;

[0024] Figure 3 This is a schematic diagram of the raw material mixing and stirring device of this utility model;

[0025] Figure 4 This is a schematic diagram of the connection between the connecting plate and the L-shaped scraper of this utility model;

[0026] Figure 5 This is an enlarged view of Figure A of this utility model;

[0027] In the diagram: 1. Mixing tank; 2. Discharge pipe; 3. Top cover; 31. Feed channel; 4. Raw material mixing and stirring device; 41. Stirring shaft; 42. Propeller blade; 43. Stirring motor; 44. Shearing blade; 45. Connecting plate; 46. L-shaped scraper; 451. Locking groove; 461. Insertion hole; 462. Mounting cavity; 463. Through groove; 464. Trapezoidal mounting plate; 465. Locking rod; 466. Spring; 467. Insert rod; 468. Mounting circular plate. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0029] This utility model provides a technical solution: such as Figure 1As shown in this embodiment, a raw material mixing device for producing plastic packaging film includes a mixing tank 1. A heating module is provided on the side wall of the mixing tank 1, and the heating temperature of the side wall is adjusted according to the type of raw material. For example, PVC requires a low temperature and PP requires a high temperature. A discharge pipe 2 is provided at the bottom outlet of the mixing tank 1, and a valve is installed on the outside of the discharge pipe 2. A top cover 3 is installed on the top of the mixing tank 1 through a flange. A feeding channel 31 is installed on one side of the upper end of the top cover 3, and a raw material mixing and stirring device 4 is rotatably installed on the top cover 3.

[0030] like Figure 2 and Figure 3 As shown, the raw material mixing and stirring device 4 includes a stirring shaft 41, with a stirring motor 43 installed at the upper end of the stirring shaft 41. The stirring motor 43 is located on the top of the top cover 3. The stirring shaft 41 is vertically arranged inside the mixing tank 1. A propeller blade 42 is fixedly connected above the stirring shaft 41. A shear blade 44 is arranged in the circumferential direction below the stirring shaft 41. The shear blade 44 has serrations on its outer side. The propeller blade 42 above the stirring shaft 41 is used for pre-dispersion of the raw materials. The shear blade 44 below the stirring shaft 41, with serrations, is used to break up agglomerates. The inclined design enhances radial mixing. The L-shaped scrapers 46 on both sides can scrape off the raw materials adhering to the inner wall of the mixing tank 1, which facilitates the subsequent cleaning of the mixing tank 1 and reduces waste when discharging raw materials.

[0031] like Figure 3-5 As shown, connecting plates 45 are fixedly connected to the upper and lower sides of both sides of the stirring shaft 41. L-shaped scrapers 46 are inserted into one end of each connecting plate 45. The side of the L-shaped scrapers 46 closest to the inner wall of the mixing tank 1 contacts the inner wall of the mixing tank 1. Locking grooves 451 are provided on the upper and lower sides of one end of the connecting plate 45. Mounting cavities 462 are provided on the L-shaped scrapers 46 located on both the upper and lower sides of the connecting plate 45. Insertion holes 461 are provided at the other end of each mounting cavity 462. Trapezoidal mounting plates 464 are slidably connected within each mounting cavity 462. Locking rods 465 are fixedly connected to the left and right sides of the trapezoidal mounting plates 464 closest to the connecting plate 45. Through grooves 463 are provided on the left and right sides of the insertion holes 461 closest to the connecting plate 45. Insertion rods 467 are inserted into each insertion hole 461. The side of 467 that contacts the trapezoidal mounting plate 464 is designed as a bevel. The outer side of the insertion rod 467 is fixedly connected to the mounting circular plate 468. The mounting circular plate 468 is connected to the L-shaped scraper 46 by screws. The insertion rod 467 presses the trapezoidal mounting plate 464 so that the locking rod 465 passes through the through groove 463 and is inserted into the locking groove 451. A spring 466 is provided between the trapezoidal mounting plate 464 and the circular groove at the bottom for resetting the trapezoidal mounting plate 464. The top cover 3 and the raw material mixing and stirring device 4 are connected to the mixing tank 1 through the flange. They can be separated by disassembly later. The L-shaped scrapers 46 at both ends are connected to the connecting plate 45 by insertion. This not only makes the connection stable, but also makes it easy to replace the worn L-shaped scraper 46, thus improving the scraping effect.

[0032] This utility model provides a raw material mixing device for plastic packaging film production. The specific working principle is as follows: Raw materials are fed into the feed channel 31, and simultaneously, the stirring motor 43 is started, driving the stirring shaft 41 to rotate, causing the propeller blades 42 and shear blades 44 to rotate. The propeller blades 42 push the raw materials downwards, the shear blades 44 break up clumps, and the L-shaped scrapers 46 at both ends scrape off any adhering raw materials, reducing adhesion. Depending on the type of raw material, the heating module on the side wall of the mixing tank 1 is activated. After mixing is complete, the valve on the discharge pipe 2 is opened to discharge the raw materials. After a period of time, the raw material mixing and stirring device 4 can be removed for replacement or maintenance. When it is necessary to replace the worn L-shaped scraper 46, the inspector can remove the screws between the mounting plate 468 and the L-shaped scraper 46. Then, the insertion rod 467 is pulled out from the insertion hole 461. As the trapezoidal mounting plate 464 loses its compressive force, the spring 466 elastically returns to its original position, causing the trapezoidal mounting plate 464 to move into the insertion hole 461. This causes the locking rod 465 to disengage from the locking groove 451, making it easier to disassemble and separate the connecting plate 45 from the L-shaped scraper 46. When replacing the new L-shaped scraper 46, the L-shaped scraper 46 is fitted onto the outside of the connecting plate 45 and aligned. The insertion rod 467 is then inserted into the insertion hole 461. The trapezoidal mounting plate 464 with its beveled surface contacts and presses against the trapezoidal mounting plate 464, causing the locking rod 465 to lock in the locking groove 451. The spring 466 is also compressed and deformed. Finally, the mounting plate 468 and the L-shaped scraper 46 are connected and mounted with screws.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A raw material mixing device for producing plastic packaging film, comprising a mixing tank (1), characterized in that: The mixing tank (1) has a top cover (3) installed at the top via a flange, and a raw material mixing and stirring device (4) is rotatably installed on the top cover (3). The raw material mixing and stirring device (4) includes a stirring shaft (41), which is vertically arranged inside the mixing tank (1). A propeller blade (42) is fixedly connected above the stirring shaft (41), and a shear blade (44) is provided in the circumferential direction below the stirring shaft (41). The shear blade (44) has serrations on its outer side. Connecting plates (45) are fixedly connected to the upper and lower sides of both sides of the stirring shaft (41). An L-shaped scraper (46) is inserted into one end of the outer side of each connecting plate (45). Locking grooves (451) are provided on the upper and lower sides of the outer side of each connecting plate (45). Mounting cavities (462) are provided on the L-shaped scraper (46) and on both the upper and lower sides of the connecting plate (45). Insertion holes (461) are provided at the other end of each mounting cavity (462). Trapezoidal components are slidably connected inside each mounting cavity (462). Mounting plate (464), the trapezoidal mounting plate (464) is fixedly connected to locking rods (465) on both the left and right sides of the end near the connecting plate (45), the insertion hole (461) is provided with through grooves (463) on both the left and right sides of the end near the connecting plate (45), and a plug rod (467) is inserted into the insertion hole (461). The plug rod (467) is pressed by the trapezoidal mounting plate (464) so ​​that the locking rod (465) passes through the through groove (463) and is inserted into the locking groove (451).

2. The raw material mixing device for producing plastic packaging film according to claim 1, characterized in that: The mixing tank (1) is provided with a discharge pipe (2) at the bottom discharge port, and a valve is installed on the outside of the discharge pipe (2).

3. The raw material mixing device for producing plastic packaging film according to claim 1, characterized in that: A feeding channel (31) is installed on one side of the upper end of the top cover (3).

4. The raw material mixing device for producing plastic packaging film according to claim 1, characterized in that: A stirring motor (43) is installed on the upper end of the stirring shaft (41), and the stirring motor (43) is located on the top of the top cover (3).

5. The raw material mixing device for producing plastic packaging film according to claim 1, characterized in that: The L-shaped scraper (46) is in contact with the inner wall of the mixing tank (1) on the side closest to the inner wall of the mixing tank (1).

6. The raw material mixing device for producing plastic packaging film according to claim 1, characterized in that: The side of the insert (467) that contacts the trapezoidal mounting plate (464) is designed as an inclined surface. The outer side of the insert (467) is fixedly connected to a mounting circular plate (468). The mounting circular plate (468) is connected to the L-shaped scraper (46) by screws.

7. The raw material mixing device for producing plastic packaging film according to claim 1, characterized in that: Springs (466) are provided between the trapezoidal mounting plate (464) and the circular groove at the bottom for resetting the trapezoidal mounting plate (464).

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