Multi-stage vibration screening device for plastic particle production

Abstract

The utility model relates to the field of plastic particle production, specifically is a kind of multistage vibration screening device for plastic particle production, including screening shell, the top of screening shell is equipped with top cover by bolt, the utility model is removed between top cover and screening shell by bolt, then upper screen mesh is pulled up, and upper screen mesh drives upper pivot and middle column to move, and middle column drives middle limit rod to move from middle limit groove, until upper screen mesh is extracted from screening shell, subsequently lower screen mesh is pulled up, and lower screen mesh drives middle pivot and lower column to move, and lower limit rod is extracted from lower limit groove by the movement of lower column, until lower screen mesh is removed from screening shell, reach the effect of convenient removal, solve the problem that part of particle contains sticky component, or after damp, easy to stick, adhere to the edge of screen hole accumulation, and irregular, particle with burr is easy to be stuck in screen hole, cannot fall off with vibration, so as to affect the screening efficiency of screening device.

Description

Technical Field

[0001] This utility model relates to the field of plastic granule production, specifically a multi-stage vibration screening device for plastic granule production. Background Technology

[0002] The plastic granule vibration screening device is a specialized grading equipment for plastic granules (virgin material, recycled material, modified material, etc.). It uses vibration energy to separate granules according to their particle size. Its core function is to remove impurities and perform grading and screening, ensuring the uniformity of plastic granules in subsequent processing (injection molding, extrusion, etc.).

[0003] When using existing multi-stage vibrating screening devices for plastic pellet production, some pellets (such as modified materials and recycled materials) contain sticky components or tend to stick together after being exposed to moisture, accumulating on the edges of the screen holes. Irregular or burr-like pellets are easily stuck in the screen holes and cannot be dislodged by vibration, thus affecting the screening efficiency of the screening device. Utility Model Content

[0004] To address the shortcomings of existing technologies, such as the fact that some particles (e.g., modified materials, recycled materials) contain sticky components or tend to stick together when damp, accumulating on the edges of the screen holes, and that irregular, burr-like particles are easily stuck in the screen holes and cannot be dislodged by vibration, thus affecting the screening efficiency of the screening device, this utility model proposes a multi-stage vibration screening device for plastic particle production.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a multi-stage vibrating screening device for plastic granule production, including a screening shell, a top cover is installed on the top of the screening shell by bolts, a feed hopper is fixedly connected to both sides of the inner wall of the top cover, a vibrating motor is fixedly connected to the front and back sides of the screening shell, a fixed support is fixedly connected to the bottom of the screening shell, and an upper screen and a lower screen are respectively installed on the top and bottom of the inner cavity of the screening shell.

[0006] The screening shell is equipped with an actuating mechanism, which includes a servo motor. The servo motor is fixed to the surface of the top cover. The output end of the servo motor is fixedly connected to a light rod. An upper rotating shaft is installed at the bottom of the light rod. The upper rotating shaft is rotatably connected to the inside of the upper screen. A middle rotating shaft is installed at the bottom of the upper rotating shaft. The middle rotating shaft is rotatably connected to the inside of the lower screen. Sleeves are fixedly connected to the surfaces of both the middle rotating shaft and the upper rotating shaft. Rotating plates are fixedly connected to both sides of the sleeves.

[0007] Preferably, the top of the inner cavity of the upper rotating shaft is provided with an upper groove, and both sides of the inner wall of the upper groove are provided with upper limit grooves. The interior of the upper limit groove is inserted into the surface of the upper limit rod, and the optical rod is engaged inside the upper groove.

[0008] Preferably, a central column is fixedly connected to the bottom of the upper rotating shaft, and central limiting rods are fixedly connected to both sides of the central column. A central groove is provided at the top of the inner cavity of the central rotating shaft, and central limiting grooves are provided on both sides of the central groove. The interior of the central limiting groove is engaged with the surface of the central limiting rod, and the surface of the central column is engaged with the interior of the central groove.

[0009] Preferably, a lower column is fixedly connected to the bottom of the central rotating shaft, and lower limit rods are fixedly connected to both sides of the lower column. A lower rotating shaft is installed on the surface of the lower column, and a lower groove is formed inside the lower rotating shaft. Lower limit grooves are formed on both sides of the inner wall of the lower groove. The surface of the lower limit groove is engaged with the surface of the lower limit rod, and the interior of the lower groove is engaged with the surface of the lower column.

[0010] Preferably, the bottom of the lower rotating shaft is rotatably connected to a base, and a side frame is fixedly connected to the surface of the base. There are multiple side frames, and one side of the side frame is fixedly connected to the inner wall of the screening shell.

[0011] Preferably, a second slot is provided on both sides of the inner wall of the screening shell, and an upper insertion block is fixedly connected to both sides of the upper screen, with the surface of the upper insertion block inserted into the interior of the second slot.

[0012] Preferably, the inner wall of the screening shell is provided with a first slot on both the front and back sides, and a lower insertion block is fixedly connected to both the front and back sides of the lower screen surface, with the surface of the lower insertion block inserted into the interior of the first slot.

[0013] Preferably, an upper baffle is fixedly connected to the surface of the upper rotating shaft, and the top of the upper baffle is movably connected to the bottom of the upper screen. A lower baffle is fixedly connected to the surface of the middle rotating shaft, and the top of the lower baffle is movably connected to the bottom of the lower screen.

[0014] The advantages of this utility model are:

[0015] This invention uses bolts to remove the top cover from the screening shell, then pulls the upper screen upwards. The upper screen moves the upper rotating shaft and the middle column, and the middle column moves the middle limiting rod out of the middle limiting groove until the upper screen is pulled out of the screening shell. Then, the lower screen is pulled upwards, and the lower screen moves the middle rotating shaft and the lower column. The movement of the lower column moves the lower limiting rod out of the lower limiting groove until the lower screen is pulled out of the screening shell. This achieves convenient removal and solves the problem that some particles contain sticky components or are prone to sticking together after being damp, accumulating on the edge of the screen holes, while irregular, burr-like particles are easily stuck in the screen holes and cannot be dislodged by vibration, thus affecting the screening efficiency of the screening device. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a cross-sectional view of the screening shell structure of this utility model;

[0019] Figure 3 This is a schematic diagram showing the connection between the lower and upper screen structures of this utility model;

[0020] Figure 4 This is a schematic diagram showing the connection of the upper rotating shaft, middle rotating shaft, and lower rotating shaft structure of this utility model;

[0021] Figure 5 This is an exploded view showing the connection of the upper, middle, and lower rotating shafts of this utility model.

[0022] Figure 6 This is an exploded view of the upper screen, lower screen, and screening shell structure of this utility model.

[0023] In the diagram: 1. Screening shell; 2. Vibrating motor; 3. Fixed support; 4. Top cover; 5. Feed hopper; 6. Actuating mechanism; 61. Servo motor; 62. Upper rotating shaft; 63. Middle rotating shaft; 64. Lower rotating shaft; 65. Base; 66. Side frame; 67. Lower baffle; 68. Smooth rod; 69. Upper baffle; 610. Middle limiting rod; 611. Lower column; 612. Lower groove; 613. Lower limiting groove; 614. Lower limiting rod; 615. Middle limiting groove; 616. Middle groove; 617. Middle column; 618. Upper limiting groove; 619. Upper limiting rod; 620. Upper groove; 7. Lower screen; 8. Upper screen; 9. Rotating plate; 10. Lower insert block; 11. Upper insert block; 12. Sleeve; 13. First slot; 14. Second slot. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0025] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0026] This application discloses a multi-stage vibrating screening device for plastic pellet production. (Refer to...) Figure 1 and Figure 6 A multi-stage vibrating screening device for plastic granule production includes a screening shell 1. A top cover 4 is bolted to the top of the screening shell 1. Feed hoppers 5 are fixedly connected to both sides of the inner wall of the top cover 4. Vibrating motors 2 are fixedly connected to the front and back sides of the surface of the screening shell 1. A fixed support 3 is fixedly connected to the bottom of the screening shell 1. An upper screen 8 and a lower screen 7 are respectively installed at the top and bottom of the inner cavity of the screening shell 1. The lower screen 7 and the upper screen 8 have different diameters, with the upper screen 8 having a larger diameter than the lower screen 7. The lower screen 7 and the upper screen 8 with different diameters are used to screen plastic granules.

[0027] The screening shell 1 is equipped with a toggle mechanism 6, which includes a servo motor 61. The servo motor 61 is fixed to the surface of the top cover 4. The output end of the servo motor 61 is fixedly connected to a light rod 68. An upper rotating shaft 62 is installed at the bottom of the light rod 68. The upper rotating shaft 62 is rotatably connected to the inside of the upper screen 8. A middle rotating shaft 63 is installed at the bottom of the upper rotating shaft 62. The middle rotating shaft 63 is rotatably connected to the inside of the lower screen 7. A sleeve 12 is fixedly connected to the surface of both the middle rotating shaft 63 and the upper rotating shaft 62. A rotating plate 9 is fixedly connected to both sides of the sleeve 12.

[0028] Reference Figure 5 The upper rotating shaft 62 has an upper groove 620 at the top of its inner cavity. The upper groove 620 has upper limit grooves 618 on both sides of its inner wall. The upper limit grooves 618 are plugged into the surface of the upper limit rod 619. The light rod 68 is engaged with the upper groove 620. The upper groove 620 allows the light rod 68 to be inserted into the upper rotating shaft 62. The upper limit grooves 618 guide the position of the upper limit rod 619 inside the upper rotating shaft 62 and improve the stability of the connection between the light rod 68 and the upper rotating shaft 62.

[0029] Reference Figure 5 A central column 617 is fixedly connected to the bottom of the upper rotating shaft 62. A central limiting rod 610 is fixedly connected to both sides of the central column 617. A central groove 616 is opened at the top of the inner cavity of the central rotating shaft 63. A central limiting groove 615 is opened on both sides of the central groove 616. The inside of the central limiting groove 615 engages with the surface of the central limiting rod 610. The surface of the central column 617 engages with the inside of the central groove 616. The central groove 616 allows the central column 617 to be inserted into the interior of the central rotating shaft 63. At the same time, the central limiting groove 615 improves the stability of the connection between the central column 617 and the central rotating shaft 63 after the central limiting rod 610 is inserted into the central limiting groove 615.

[0030] Reference Figure 5 A lower column 611 is fixedly connected to the bottom of the middle rotating shaft 63. Lower limit rods 614 are fixedly connected to both sides of the lower column 611. A lower rotating shaft 64 is installed on the surface of the lower column 611. A lower groove 612 is opened inside the lower rotating shaft 64. Lower limit grooves 613 are opened on both sides of the inner wall of the lower groove 612. The surface of the lower limit groove 613 engages with the surface of the lower limit rod 614. The inside of the lower groove 612 engages with the surface of the lower column 611. The lower groove 612 allows the lower column 611 to be smoothly inserted into the lower rotating shaft 64, thereby facilitating the connection between the lower column 611 and the lower rotating shaft 64.

[0031] Reference Figure 2 and Figure 4 The bottom of the lower rotating shaft 64 is rotatably connected to a base 65, and a side frame 66 is fixedly connected to the surface of the base 65. There are multiple side frames 66. One side of the side frame 66 is fixedly connected to the inner wall of the screening shell 1. The base 65 can support the bottom of the lower rotating shaft 64, so that the lower rotating shaft 64 can rotate smoothly on the top of the base 65. The side frame 66 supports the position of the base 65 and prevents the side frame 66 from being suspended.

[0032] Reference Figure 6 The inner wall of the screening shell 1 has two second slots 14 on both sides. The upper screen 8 is fixedly connected to both sides with upper insert blocks 11. The surface of the upper insert block 11 is inserted into the interior of the second slot 14. The upper insert block 11 can be inserted into the second slot 14 through the setting of the second slot 14, thereby facilitating the installation and removal of the upper screen 8.

[0033] Reference Figure 6 The screening shell 1 has a first slot 13 on the front and back sides of its inner wall. The lower screen 7 has a lower insert block 10 fixedly connected to the front and back sides of its surface. The surface of the lower insert block 10 is inserted into the interior of the first slot 13. The lower insert block 10 can be inserted into the first slot 13 through the front side of the first slot 13, which facilitates the installation and removal of the lower screen 7. The depth of the first slot 13 in the screening shell 1 is greater than the depth of the second slot 14. Thus, after the lower screen 7 and the upper screen 8 are inserted into the screening shell 1, the lower screen 7 can be located at the bottom of the upper screen 8.

[0034] Reference Figure 5An upper baffle 69 is fixedly connected to the surface of the upper rotating shaft 62. The top of the upper baffle 69 is movably connected to the bottom of the upper screen 8. A lower baffle 67 is fixedly connected to the surface of the middle rotating shaft 63. The top of the lower baffle 67 is movably connected to the bottom of the lower screen 7. The upper baffle 69 supports the position of the upper screen 8 to prevent it from falling off during operation. The lower baffle 67 supports the position of the lower screen 7, allowing it to work within the screening shell 1.

[0035] Working principle: First, the granules are poured into the screening shell 1 through the feed hopper 5 and placed in the upper screen 8. Then, the servo motor 61 drives the guide rod 68 and the upper rotating shaft 62 to rotate. The rotation of the upper rotating shaft 62 drives the middle rotating shaft 63 to rotate. The rotation of the upper rotating shaft 62 and the middle rotating shaft 63 drives the sleeve 12 and the rotating plate 9 to rotate within the upper screen 8 and the lower screen 7, thereby improving the flowability of the plastic granules. With the cooperation of the vibrating motor 2, the plastic granules are screened. When it is necessary to remove the screen after screening, the top cover 4 is removed from the screening shell 1. The servo motor 61 will drive the guide rod 68 and the upper limit rod 619 from the upper groove 620 and the upper limit groove 61. 8. Disconnect from the screen until the top of the screening shell 1 is open. Then pull the upper screen 8 upward, which drives the upper rotating shaft 62 and the middle column 617 to move. The middle column 617 drives the middle limiting rod 610 to move out of the middle limiting groove 615 until the upper screen 8 is pulled out of the screening shell 1. Then pull the lower screen 7 upward, which drives the middle rotating shaft 63 and the lower column 611 to move. The movement of the lower column 611 drives the lower limiting rod 614 to be pulled out of the lower limiting groove 613 until the lower screen 7 is moved out of the screening shell 1. The lower screen 7 and the upper screen 8 can then be removed from the screening shell 1 to prevent the lower screen 7 and the upper screen 8 from clogging and affecting the screening effect.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A multi-stage vibrating screening device for plastic granule production, comprising a screening shell (1), characterized in that: The top of the screening shell (1) is bolted with a top cover (4), and feed hoppers (5) are fixedly connected to both sides of the inner wall of the top cover (4). Vibration motors (2) are fixedly connected to the front and back sides of the surface of the screening shell (1). A fixed support (3) is fixedly connected to the bottom of the screening shell (1). An upper screen (8) and a lower screen (7) are respectively installed at the top and bottom of the inner cavity of the screening shell (1). The screening shell (1) is provided with a toggle mechanism (6), which includes a servo motor (61). The servo motor (61) is fixed to the surface of the top cover (4). The output end of the servo motor (61) is fixedly connected to a light rod (68). An upper rotating shaft (62) is installed at the bottom of the light rod (68). The upper rotating shaft (62) is rotatably connected to the inside of the upper screen (8). A middle rotating shaft (63) is installed at the bottom of the upper rotating shaft (62). The middle rotating shaft (63) is rotatably connected to the inside of the lower screen (7). A sleeve (12) is fixedly connected to the surface of both the middle rotating shaft (63) and the upper rotating shaft (62). A rotating plate (9) is fixedly connected to both sides of the sleeve (12).

2. The multi-stage vibrating screening device for plastic granule production according to claim 1, characterized in that: The top of the inner cavity of the upper rotating shaft (62) is provided with an upper groove (620), and upper limit grooves (618) are provided on both sides of the inner wall of the upper groove (620). The interior of the upper limit groove (618) is connected to the surface of the upper limit rod (619) by insertion, and the light rod (68) is engaged in the interior of the upper groove (620).

3. The multi-stage vibrating screening device for plastic granule production according to claim 1, characterized in that: The bottom of the upper rotating shaft (62) is fixedly connected to a central column (617), and both sides of the central column (617) are fixedly connected to a central limiting rod (610). The top of the inner cavity of the central rotating shaft (63) is provided with a central groove (616), and both sides of the central groove (616) are provided with central limiting grooves (615). The interior of the central limiting groove (615) is engaged with the surface of the central limiting rod (610), and the surface of the central column (617) is engaged with the interior of the central groove (616).

4. The multi-stage vibrating screening device for plastic granule production according to claim 1, characterized in that: The bottom of the central rotating shaft (63) is fixedly connected to a lower column (611), and both sides of the lower column (611) are fixedly connected to a lower limit rod (614). A lower rotating shaft (64) is installed on the surface of the lower column (611). A lower groove (612) is opened inside the lower rotating shaft (64). Both sides of the inner wall of the lower groove (612) are provided with lower limit grooves (613). The surface of the lower limit groove (613) is engaged with the surface of the lower limit rod (614). The inside of the lower groove (612) is engaged with the surface of the lower column (611).

5. The multi-stage vibrating screening device for plastic granule production according to claim 4, characterized in that: The bottom of the lower rotating shaft (64) is rotatably connected to a base (65), and a side frame (66) is fixedly connected to the surface of the base (65). There are multiple side frames (66), and one side of the side frame (66) is fixedly connected to the inner wall of the screening shell (1).

6. The multi-stage vibrating screening device for plastic granule production according to claim 1, characterized in that: The inner wall of the screening shell (1) is provided with a second slot (14) on both sides, and the upper screen (8) is fixedly connected with an upper insert (11) on both sides. The surface of the upper insert (11) is inserted into the interior of the second slot (14).

7. The multi-stage vibrating screening device for plastic granule production according to claim 1, characterized in that: The screening shell (1) has a first slot (13) on the front and back sides of its inner wall. The lower screen (7) has a lower insert (10) fixedly connected to the front and back sides of its surface. The surface of the lower insert (10) is inserted into the interior of the first slot (13).

8. The multi-stage vibrating screening device for plastic granule production according to claim 1, characterized in that: An upper baffle (69) is fixedly connected to the surface of the upper rotating shaft (62), and the top of the upper baffle (69) is movably connected to the bottom of the upper screen (8). A lower baffle (67) is fixedly connected to the surface of the middle rotating shaft (63), and the top of the lower baffle (67) is movably connected to the bottom of the lower screen (7).

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