Feeding device of plastic extruder

Abstract

The utility model belongs to the technical field of plastic extruders, and particularly relates to a feeding device of a plastic extruder. The utility model provides an improved feeding device of a plastic extruder. Comprising material shaking parts, a material dispersing assembly and the like, the material shaking parts used for shaking materials are arranged on the guide hopper in the circumferential direction at intervals, each material shaking part is located between the two partition plates, and the material dispersing assembly used for pushing the materials is further arranged between the feeding pipe and the guide hopper. The driving plate and the spiral guide plate are driven by the low-speed motor to synchronously rotate, so that materials are spirally stirred by the guide plate and conveyed into the distributing sieve tray after entering through the feeding hopper, and the materials adhered in the distributing sieve tray are pushed to be dispersed under the shearing matching action of the rotating driving plate and the static dividing strip, so that the materials are thoroughly dispersed; and the dispersed materials fall onto the step-shaped material shaking piece through sieve holes of the material separating sieve tray, and shake is formed through the drop which is gradually reduced from inside to outside, so that the materials can be uniformly scattered out of the discharging cavity.

Description

Technical Field

[0001] The utility model belongs to the technical field of plastic extruders, and particularly relates to a feeding device for a plastic extruder. Background Art

[0002] During the production process of plastic extrusion molding, the uniformity and dispersibility of the feeding device directly affect the melting efficiency of the material and the product quality. Most traditional feeding devices rely on vibrating sieve plates or single stirring structures to achieve material dispersion, resulting in limited dispersion effects.

[0003] A utility model patent for a feeding device of a plastic extruder was publicly disclosed on the Chinese Patent Network. Its authorization announcement number is CN222115987U, and the application date is April 9, 2024. The device includes a feed pipe, a feed hopper is connected to the top of the feed pipe, a discharge hopper is connected to the bottom of the feed pipe, and a tray is fixedly installed above the inner wall of the feed pipe. The device drives the sieve plate to rotate through the rotation of the rotating rod, and the rotation of the sieve plate makes the sieve plate vibrate up and down through the contact of the top block with the triangular block, thereby achieving the effect of dispersing the plastic particles sticking together and avoiding the occurrence of blockage in the feed pipe; however, only by the way of making the sieve plate vibrate up and down through the contact of the top block with the triangular block, it is difficult to achieve thorough and uniform dispersion of the sticky materials, and then some undispersed materials stay on and accumulate on the sieve plate, resulting in blockage, and thus it is difficult to completely solve the problems of blockage and dispersion, and there is still room for further improvement.

[0004] Therefore, a specially improved feeding device for a plastic extruder is proposed to solve the above technical problems. Summary of the Utility Model

[0005] In order to overcome the shortcoming that the existing feeding device has incomplete dispersion of sticky materials during actual use, which easily leads to blockage problems of the sieve plate, the technical problem of the utility model is: to provide an improved feeding device for a plastic extruder.

[0006] The technical implementation scheme of the utility model is: a feeding device for a plastic extruder, including a feed hopper, a feed pipe, a discharge pipe, a partition plate and a material guiding hopper. A material guiding hopper is fixedly installed in the discharge pipe through the partition plate. It also includes a material shaking member and a material scattering assembly. The material guiding hopper is circumferentially and spacedly provided with material shaking members for shaking and scattering materials, and a material scattering assembly for pushing and scattering materials is also provided between the feed pipe and the material guiding hopper;

[0007] The bulk material component includes a connecting shaft, a material distribution sieve plate, partition bars, and a material pushing plate. A connecting shaft is rotatably connected to the middle of the material guiding hopper. A material pushing plate is fixedly sleeved on the middle of the connecting shaft. A material distribution sieve plate is installed on the inner wall of the feed pipe. The material pushing plate is located above the material distribution sieve plate. Partition bars are circumferentially and spacedly distributed along the inner edge of the material distribution sieve plate, and the material pushing plate is in contact with the surfaces of the material distribution sieve plate and the partition bars respectively.

[0008] Furthermore, the vibrating member has a stepped structure, and its height gradually decreases from inside to outside.

[0009] Furthermore, the vertical projection of the vibrating member corresponds to the positions of the sieve holes on the material distribution sieve plate.

[0010] Furthermore, a guiding plate is further included, and the guiding plate is fixedly installed on the upper part of the connecting shaft.

[0011] Furthermore, the guiding plate is designed with a spiral structure.

[0012] Furthermore, a low-speed motor is further included. The low-speed motor is integrally installed at the bottom of the material guiding hopper, and the output shaft of the low-speed motor is in transmission connection with the connecting shaft through a coupling.

[0013] Compared with the prior art, the present utility model has the following advantages: By driving the pushing plate and the spiral guiding plate to rotate synchronously through the low-speed motor, after the material enters through the feed hopper, it is spirally stirred and conveyed by the guiding plate into the material distribution sieve plate, and the adhered materials in the material distribution sieve plate are pushed and dispersed through the shearing cooperation of the rotating pushing plate and the stationary partition bars, which is beneficial to thoroughly disperse the materials; and the dispersed materials fall onto the stepped vibrating member through the sieve holes of the material distribution sieve plate, and then form vibrations through the gradually decreasing drop from inside to outside, so that the materials can uniformly fall out from the discharge cavity; in this way, it can effectively avoid the problem that it is difficult to thoroughly disperse the adhered materials by using the vibration method of the sieve plate; furthermore, it is beneficial to further improve the heating efficiency of the materials. Description of the Drawings

[0014] Figure 1 It is a three-dimensional structure diagram of the present utility model.

[0015] Figure 2 It is a three-dimensional structure diagram of another perspective of the present utility model.

[0016] Figure 3 It is a cross-sectional view of the present utility model.

[0017] Figure 4 It is a separated structure diagram of the present utility model.

[0018] The markings of each component in the drawings are as follows: 1: feed hopper, 2: feed pipe, 3: discharge pipe, 30: blanking chamber, 4: partition plate, 40: material shaking member, 5: guide hopper, 6: low-speed motor, 7: connecting shaft, 8: guide plate, 9: material distribution sieve plate, 90: partition strip, 10: material pushing plate, 11: inclined opening. Detailed implementation mode

[0019] First of all, it should be pointed out that in different described implementation modes, the same components are provided with the same reference numerals in the drawings or the same component names. Among them, the disclosed content included in the entire specification can be meaningfully applied to the same components with the same reference numerals in the drawings or the same component names. The positional descriptions selected in the specification, such as up, down, lateral, etc., also refer to the directly described and shown drawings and are meaningfully applied to the new positions when the positions change.

[0020] Implementation mode: A feeding device for a plastic extruder provided by the present utility model, as Figures 1 to 4 shown, includes a feed hopper 1, a feed pipe 2, a discharge pipe 3, a partition plate 4, a material shaking member 40, a guide hopper 5 and a material scattering assembly. The upper and lower ends of the feed pipe 2 are respectively connected and communicated with the feed hopper 1 and the discharge pipe 3. A guide hopper 5 is fixedly installed in the discharge pipe 3 through the partition plate 4, and a blanking chamber 30 for the material to fall is formed between the outer side of the guide hopper 5 and the inner wall of the discharge pipe 3. The guide hopper 5 is provided with material shaking members 40 for shaking and scattering the material at intervals along the circumferential direction, and each material shaking member 40 is located between two partition plates 4; the material shaking member 40 has a stepped structure, and the height gradually decreases from the inside to the outside; a certain height difference can be formed, which is beneficial to further shake and disperse the material evenly; a material scattering assembly for pushing and scattering the material is also provided between the feed pipe 2 and the guide hopper 5; the material scattering assembly includes a connecting shaft 7, a material distribution sieve plate 9, a partition strip 90 and a material pushing plate 10. The middle part of the guide hopper 5 is rotatably connected with the connecting shaft 7, the middle part of the connecting shaft 7 is fixedly sleeved with the material pushing plate 10, and an inclined opening 11 is formed at the inner edge of the material pushing plate 10 to facilitate guiding the material into the material pushing plate 10; the inner wall of the feed pipe 2 is provided with the material distribution sieve plate 9, and the material pushing plate 10 is located above the material distribution sieve plate 9; and the vertical projection of the material shaking member 40 corresponds to the positions of the sieve holes on the material distribution sieve plate 9, which is convenient for accurately connecting the material falling from the sieve holes, and is beneficial to achieving the purpose of uniform dispersion; partition strips 90 are distributed at intervals along the circumferential direction in the material distribution sieve plate 9, and the material pushing plate 10 is in contact with the surfaces of the material distribution sieve plate 9 and the partition strips 90 respectively; thus, it is beneficial to use the shear force generated between the rotating material pushing plate 10 and the stationary partition strips 90 to push and disperse the adhered material on the material distribution sieve plate 9.

[0021] Furthermore, as Figure 1 、 Figure 3 and Figure 4As shown, it further includes a material guiding plate 8. The upper part of the connecting shaft 7 is fixedly installed with the material guiding plate 8, and the material guiding plate 8 is designed with a spiral structure, which is convenient for stirring and conveying the materials added into the feeding pipe 2 to avoid blockage.

[0022] In addition, as Figure 2 and Figure 4 shown, it further includes a low-speed motor 6. The low-speed motor 6 is integrally installed at the bottom of the material guiding hopper 5, and the output shaft of the low-speed motor 6 is in transmission connection with the connecting shaft 7 through a coupling, which is beneficial to improving the overall structural compactness of the feeding device and making the operation more convenient when feeding materials.

[0023] When it is necessary to feed materials, start the low-speed motor 6 to drive the material distributing plate 10 and the spiral material guiding plate 8 to rotate synchronously at a low speed. Pour the materials into the feeding hopper 1, and discharge the materials from the discharging pipe 3 through the feeding pipe 2. The low-speed rotating material guiding plate 8 can achieve the purpose of spiral stirring and conveying of the materials in the feeding pipe 2; when the materials fall into the material distributing sieve plate 9, through the mutual shearing action of the low-speed rotating material distributing plate 10 and the stationary partition strip 90, the agglomerated materials in the material distributing sieve plate 9 can be pushed and dispersed, which is beneficial to thoroughly dispersing the materials; so that the dispersed materials can fall onto the vibrating part 40 through the sieve holes on the material distributing sieve plate 9. In addition, through the stepped structure with gradually decreasing height from inside to outside on the vibrating part 40, the materials can form a way of shaking up and down and uniformly scatter from the blanking cavity 30. In this way, it is beneficial to uniformly disperse and sprinkle the materials, avoiding that it is difficult to thoroughly disperse the agglomerated materials only by using the vibration of the sieve plate, and thus is beneficial to further improving the heating efficiency of the materials.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A feeding device for a plastic extruder, comprising a feed hopper (1), a feed pipe (2), a discharge pipe (3), a partition plate (4) and a guide hopper (5), wherein the guide hopper (5) is fixedly mounted in the discharge pipe (3) via the partition plate (4), and wherein: It also includes a material shaking piece (40) and a bulk material assembly, wherein the material shaking piece (40) for shaking the material is arranged at intervals along the circumference of the guide hopper (5), and a bulk material assembly for pushing and dispersing the material is also arranged between the feed pipe (2) and the guide hopper (5); The bulk material assembly comprises a connecting shaft (7), a material dividing screen plate (9), a dividing bar (90) and a material shifting plate (10); the connecting shaft (7) is rotatably connected to the middle of the material guide hopper (5); the material shifting plate (10) is fixedly sleeved on the middle of the connecting shaft (7); the material dividing screen plate (9) is installed on the inner wall of the feed pipe (2); the material shifting plate (10) is located above the material dividing screen plate (9); the dividing bars (90) are spaced apart in the circumferential direction in the material dividing screen plate (9); and the material shifting plate (10) is in contact with the surfaces of the material dividing screen plate (9) and the dividing bars (90) respectively.

2. A plastic extruder feeding device according to claim 1, characterized in that: The shaking material piece (40) has a stepped structure, and its height decreases step by step from the inside to the outside.

3. A plastic extruder feeding device according to claim 2, characterized in that: The vertical projection of the material shaking member (40) corresponds to the position of the sieve holes on the material dividing sieve plate (9).

4. A plastic extruder feeding device according to claim 1, characterized in that: It also includes a material guide plate (8), and the material guide plate (8) is fixedly mounted on the upper part of the connecting shaft (7).

5. A feeding device for a plastic extruder according to claim 4, characterized in that: The material guide plate (8) is designed as a spiral structure.

6. A plastic extruder feeding device according to claim 1, characterized in that: It also includes a low-speed motor (6), the bottom of the guide hopper (5) is integrally mounted with the low-speed motor (6), and the output shaft of the low-speed motor (6) is drivingly connected to the connecting shaft (7) via a coupling.

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