LFT-D recycled material feeding device

Abstract

The utility model belongs to the technical field of recycled material feeding devices, and particularly relates to an LFT-D recycled material feeding device which comprises a feeding system, a drying stirrer and a secondary crusher, the drying stirrer comprises a first bin body, a stirring device and a drying device, the first bin body is connected with the feeding system, feeding is achieved through the first bin body, the stirring device is arranged in the first bin body, and the drying device is arranged in the second bin body. The first bin body is connected with a drying device; the LFT-D recycled material feeding device comprises a first bin body and a secondary pulverizator, the first bin body is provided with a discharging end, materials are supplied to the secondary pulverizator through the discharging end, the secondary pulverizator comprises a second bin body and a pulverizing device, and the materials are secondarily pulverized through the pulverizing device. The water content of the recycled materials can be reduced and the uniformity of the recycled materials can be improved through the drying stirrer; excessive dust pollution and loss in transportation can be avoided through the secondary pulverizator, and the weighing accuracy and the adding accuracy and uniformity can be improved, so that the product quality of subsequent products is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of recycled material feeding devices, in particular to an LFT-D recycled material feeding device. Background Art

[0002] LFT-D is an online compression molding process technology for long fiber reinforced thermoplastic materials. Compared with traditional short glass fiber reinforced plastics, LFT technology with special screw, die head and cutter design and impregnation agent formula can obtain pellets and sheets with a length of more than 12 mm. The fiber length is equivalent to the pellet length, allowing the glass fiber to have a longer length in the final product. For general short fiber reinforcement, after the three processes of screw, injection port, and flow in the mold cavity, the length of the fiber decreases greatly. The average length of the fiber in the final product is less than 1 mm, so the help to the mechanical properties of the product is very limited. For LFT technology, regardless of compression molding or injection molding, the average length of the glass fiber in the final test product is still not less than 4 mm, so the mechanical properties of the product are greatly improved. Compared with short fiber reinforced structural parts, it has better impact resistance, creep resistance, and heat resistance. LFT-D material is a thermoplastic material and can be recycled. The existing equipment and solutions have the following problems:

[0003] (1) Since the fibers in LFT-D products are longer and the material is harder, when recycling, if the primary crushing target is a smaller particle size, more powder is likely to be produced during crushing. These powders are matrix resin materials, which cause material waste during transportation. Dust pollution will also be generated during online addition. Therefore, primary crushing is not suitable for small particle size crushing, and it is best to use large particle size crushing materials.

[0004] (2) When the primary crushed material is used on existing equipment, the powder and granules are mixed, resulting in inaccurate weighing, which affects the density and quality of the product.

[0005] (3) Since the crushed material goes through many links at one time, the moisture content will be relatively high, and the existing equipment does not have a heating and drying device.

[0006] (4) Since the primary crushed material passes through many links, it is difficult to avoid the inclusion of metal particles, which may cause damage to the equipment. The existing equipment has poor control over the metal ion removal link. Utility Model Content

[0007] The utility model provides a LFT-D recycled material feeding device, which can solve the problems pointed out in the background technology.

[0008] A LFT-D recycled material feeding device comprises a feeding system, a drying agitator and a secondary crusher, the drying agitator comprises a first bin, a stirring device and a drying device, the first bin is connected to the feeding system, and material is fed through the first bin, a stirring device is provided in the first bin, and the drying device is connected to the first bin; the first bin has a discharge end, and material is fed to the secondary crusher through the discharge end, the secondary crusher comprises a second bin and a crushing device, and the material is secondarily crushed by the crushing device.

[0009] Preferably, the feeding system is a pneumatic pumping machine.

[0010] Preferably, a de-impurity magnetic absorber is provided on the extraction end of the extraction pipe of the pneumatic extraction machine and on the contact end between the feeding system and the first bin body.

[0011] Preferably, the stirring device is a vertical stirrer, and the drying device is a hot air dryer.

[0012] Preferably, the first bin body has a feeding device on the discharge end, and the feeding device is a screw conveyor.

[0013] Preferably, the crushing device includes a crushing power device and a crushing blade.

[0014] Preferably, the crushing power device includes a crushing motor and a transmission gear.

[0015] Preferably, a weighing device is provided on the discharge end of the second bin body.

[0016] Preferably, the weighing device is a loss-in-weight scale, a buffer device is provided between the weighing device and the crushing device, and the buffer device is arranged in the second bin body.

[0017] Preferably, the buffer device is a conical funnel net of a dryer.

[0018] Beneficial effects: The utility model provides an LFT-D recycled material feeding device, which can reduce the moisture content of the recycled material and improve the uniformity of the recycled material through a drying agitator; remove magnetic metal impurities in the recycled material through a de-impurity magnetic absorber to improve the quality of the recycled material; and avoid excessive dust pollution and loss during transportation through a secondary crusher, and can also improve the accuracy of weighing, the precision and uniformity of adding, thereby effectively improving the product quality of subsequent products. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 This is a schematic diagram of the structure of the drying agitator of the utility model.

[0021] Figure 3 This is a schematic diagram of the structure of the secondary crusher of the utility model.

[0022] Figure 4 This is a partial internal schematic diagram of the secondary pulverizer of the utility model.

[0023] Description of reference numerals:

[0024] Reference numerals in the figure: extraction pipe 11; impurity removal magnetic absorber 12; first warehouse body 21; stirring device 22; drying device 23; feeding device 24; second warehouse body 31; crushing device 32; crushing power device 321; crushing blade 322; weighing device 33; buffer device 34; soft shell 35. DETAILED DESCRIPTION

[0025] A specific implementation of the present utility model is described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present utility model is not limited by the specific implementation mode.

[0026] Implementation example Figure 1-4 As shown, an LFT-D recycled material feeding device provided by an embodiment of the utility model includes a feeding system, a drying agitator and a secondary crusher, wherein the drying agitator includes a first bin 21, a stirring device 22 and a drying device 23, wherein the first bin 21 is connected to the feeding system, and the material is fed through the first bin 21, wherein a stirring device 22 is arranged in the first bin 21, and the drying device 23 is connected to the first bin 21; specifically, the feeding system is a pneumatic pumping machine, the stirring device 22 is a vertical agitator, the drying device 23 is a hot air dryer, and the first bin 21 is provided with a discharging end, and the discharging end is provided with a The secondary crusher is fed with materials. Specifically, the first warehouse body 21 has a feeding device 24 on the discharge end. The feeding device 24 is a screw conveyor, which feeds the secondary crusher with materials. The secondary crusher includes a second warehouse body 31 and a crushing device 32. The crushing device 32 is used to crush the material for the second time. Specifically, the crushing device 32 includes a crushing power device 321 and a crushing blade 322. The crushing power device 321 is externally arranged outside the second warehouse body 31, and includes a crushing motor and a transmission gear. The crushing blade 322 is arranged in the second warehouse body 31 for secondary crushing of recycled materials.

[0027] In some embodiments, a de-impurity magnetic absorber 12 is provided on the extraction end of the extraction pipe 11 of the pneumatic extraction machine and on the contact end between the feeding system and the first bin body 21, which can effectively remove the metal magnetic particles in the recycled material.

[0028] In some embodiments, a weighing device 33 is disposed on the discharge end of the second bin body 31 . The weighing device 33 is a loss-in-weight scale that can accurately weigh to ensure the accuracy of the amount and proportion of the recycled material added.

[0029] In some embodiments, a buffer device 34 is provided between the weighing device 33 and the crushing device 32. The buffer device 34 is arranged in the second bin body 31. The buffer device 34 can reduce the impact of the recycled material on the loss-in-weight scale. The buffer device 34 is connected to the second bin body 31 on the outside with a soft shell 35, such as a rubber sheet shell, to avoid the influence of vibration on the accuracy of the loss-in-weight scale. The buffer device 34 can be a conical funnel net of a dryer.

[0030] The above disclosures are only several specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A LFT-D recycled material feeding device, characterized by: The invention comprises a feeding system, a drying stirrer and a secondary crusher, wherein the drying stirrer comprises a first bin (21), a stirring device (22) and a drying device (23), wherein the first bin (21) is connected to the feeding system and materials are fed through the feeding system, wherein the stirring device (22) is arranged in the first bin (21), and the drying device (23) is connected to the first bin (21); the first bin (21) has a discharge end, and materials are fed to the secondary crusher through the discharge end; the secondary crusher comprises a second bin (31) and a crushing device (32), and materials are crushed for a secondary time through the crushing device (32).

2. The LFT-D recycled material feeding device according to claim 1, characterized in that: The feeding system is a pneumatic pumping machine.

3. The LFT-D recycled material feeding device according to claim 2, characterized in that: A de-impurity magnetic absorber (12) is provided on the extraction end of the extraction pipe (11) of the pneumatic extraction machine and on the contact end between the feeding system and the first bin body (21).

4. The LFT-D recycled material feeding device according to claim 1, characterized in that: The stirring device (22) is a vertical stirrer, and the drying device (23) is a hot air dryer.

5. The LFT-D recycled material feeding device according to claim 1, characterized in that: The first bin body (21) has a material delivery device (24) provided at the material delivery end, and the material delivery device (24) is a screw conveyor.

6. A LFT-D recycled material feeding device according to any one of claims 1 to 5, characterized in that: The pulverizing device (32) comprises a pulverizing power device (321) and a pulverizing blade (322).

7. The LFT-D recycled material feeding device according to claim 6, characterized in that: The pulverizing power device (321) comprises a pulverizing motor and a transmission gear.

8. The LFT-D recycled material feeding device according to claim 6, characterized in that: A weighing device (33) is provided on the discharge end of the second bin body (31).

9. The LFT-D recycled material feeding device according to claim 8, characterized in that: The weighing device (33) is a loss-in-weight scale, and a buffer device (34) is provided between the weighing device (33) and the crushing device (32), and the buffer device (34) is arranged in the second bin body (31).

10. The LFT-D recycled material feeding device according to claim 9, characterized in that: The buffer device (34) is a conical funnel net of a drying machine.

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