Powder grinding device for EVA (Ethylene Vinyl Acetate) regenerated plastic particles

Abstract

The utility model relates to the technical field of crushing, in particular to a grinding device for EVA (Ethylene Vinyl Acetate) regenerated plastic particles, which comprises a circular ring bracket, a grinding mechanism for grinding the EVA regenerated plastic particles and a screening mechanism, and a collecting box is arranged on the lower side of the circular ring bracket. The hollow grinding cylinder is arranged, cooling water is introduced, when the grinding wheel and the grinding cylinder are matched for grinding, cooling of the whole grinding mechanism is achieved, materials which are not sufficiently ground are ground again through the screening mechanism and the spiral feeding mechanism, and the product quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pulverization, in particular to a grinding device for EVA recycled plastic particles. Background Art

[0002] After searching the patent document with the publication number CN115364954A, it is found that the patent document grinds the EVA material by providing a grinding wheel and a cutting groove installed on a knife seat, and continuously cools the knife seat by a cooling mechanism;

[0003] When this patent document is in use, since only the knife seat is cooled, the material remaining on the grinding wheel will heat up due to friction with the cylinder driven by the grinding wheel, resulting in poor cooling effect. At the same time, unqualified materials cannot be screened and reprocessed, affecting product quality. Utility Model Content

[0004] The purpose of the present invention is to provide a grinding device for EVA recycled plastic particles in order to solve the above problems.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0006] A grinding device for EVA recycled plastic particles, comprising a circular bracket, a collecting box provided on the lower side of the circular bracket, a grinding mechanism and a screening mechanism for grinding the EVA recycled plastic particles;

[0007] The grinding mechanism includes a support plate, which is fixed to the upper side of the circular bracket. A first motor is installed on the upper side of the support plate. A grinding cylinder is fixed to the inner side of the circular bracket. A grinding wheel is arranged inside the grinding cylinder. The upper side of the grinding wheel is fixedly connected to the output end of the first motor. The wall of the grinding cylinder is hollow and a water outlet pipe is opened on the upper side. A water inlet pipe is opened on the lower side of the grinding cylinder.

[0008] The screening mechanism includes a screen, which is tilted and arranged on the lower side of the grinding cylinder. A discharge plate is fixed on the lower side of the screen. Two vibration motors are symmetrically arranged on both sides of the screen. Four support columns are arranged on the lower side of the screen. Springs are installed on the upper ends of the support columns. The springs are fixedly connected to the lower side of the screen. Four support cross bars are fixed between the four support columns. Two slide rails are fixed on the support cross bars on both sides. The upper ends of the slide rails are slidably connected to the screen.

[0009] Preferably, the inner wall of the grinding cylinder is inclined so that the gap between the inner wall of the grinding cylinder and the grinding wheel is wider at the top and narrower at the bottom.

[0010] Preferably, four support rods are fixed circumferentially on the lower side of the circular ring bracket, and a support seat for fixing the spiral feeding mechanism is provided on the circular ring bracket.

[0011] Preferably, a feed hopper for receiving materials sent out from the discharge hopper is fixed on the upper side of the grinding cylinder.

[0012] Preferably, grinding grooves are provided on the circumferential surface of the grinding wheel.

[0013] Preferably, a gap is provided between the grinding cylinder and the grinding wheel to allow the material to fall after being ground, and a discharge port is provided at the lower side of the grinding cylinder.

[0014] Preferably: the spiral feeding mechanism includes a feeding barrel, which is arranged on one side of the grinding barrel, and a spiral rod is rotatably connected inside the grinding barrel, a second motor is arranged at the lower end of the feeding barrel, and the output end of the second motor is fixedly connected to the spiral rod, a discharge port is opened on the side of the upper end of the feeding barrel close to the grinding barrel, a discharge hopper is fixed at the discharge port, a feeding funnel is arranged on the side of the upper end of the feeding barrel close to the grinding barrel, and the lower end of the feeding funnel is connected to the feeding barrel, and the water outlet pipe and the water inlet pipe are both arranged on the side of the grinding barrel away from the feeding barrel.

[0015] The beneficial effects compared with the prior art are as follows:

[0016] 1. By setting up a hollow grinding cylinder and passing cooling water into it, the grinding wheel and the grinding cylinder can be used together to grind, thereby reducing the temperature of the entire grinding mechanism;

[0017] 2. By setting up a screening mechanism and a spiral feeding mechanism, the insufficiently ground material can be re-grinded to improve product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] Figure 1 This is a structural schematic diagram of a grinding device for EVA recycled plastic particles described in the utility model;

[0020] Figure 2 This is a partial parts diagram of the screening mechanism of the EVA recycled plastic granule grinding device described in the utility model;

[0021] Figure 3 This is a partial cross-sectional view of the grinding mechanism of a grinding device for EVA recycled plastic particles described in the present invention;

[0022] Figure 4 This is a partial parts diagram of a grinding device for EVA recycled plastic particles described in the utility model;

[0023] Figure 5 It is a partial cross-sectional view of a spiral feeding mechanism of a grinding device for EVA recycled plastic particles described in the utility model.

[0024] The following are the descriptions of the reference numerals:

[0025] 1. Grinding mechanism; 2. Ring bracket; 3. Support seat; 4. Collecting box; 5. Screening mechanism; 6. Screw feeding mechanism; 7. Support rod; 8. Feed hopper; 11. First motor; 12. Support plate; 13. Grinding wheel; 14. Grinding cylinder; 15. Water inlet pipe; 16. Water outlet pipe; 51. Vibrating motor; 52. Screen; 53. Discharge plate; 54. Support column; 55. Support cross bar; 61. Feed cylinder; 62. Discharge hopper; 63. Feed funnel; 64. Screw rod; 65. Second motor. DETAILED DESCRIPTION

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0027] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0028] The present invention will be further described below with reference to the accompanying drawings:

[0029] like Figure 1-Figure 5 As shown, a grinding device for EVA recycled plastic pellets includes a circular bracket 2, a collecting box 4 is provided on the lower side of the circular bracket 2, and also includes a grinding mechanism 1 and a screening mechanism 5 for grinding the EVA recycled plastic pellets;

[0030] In this embodiment: the grinding mechanism 1 includes a support plate 12, which is fixed on the upper side of the ring bracket 2, and a first motor 11 is installed on the upper side of the support plate 12. A grinding cylinder 14 is fixed on the inner side of the ring bracket 2, and a grinding wheel 13 is provided inside the grinding cylinder 14. The upper side of the grinding wheel 13 is fixedly connected to the output end of the first motor 11. The cylinder wall of the grinding cylinder 14 is hollow and a water outlet pipe 16 is opened on the upper side. A water inlet pipe 15 is opened on the lower side of the grinding cylinder 14. The output end of the first motor 11 drives the grinding wheel 13 to rotate, and the grinding wheel 13 cooperates with the grinding cylinder 14 to grind the plastic particles. At the same time, cooling water is introduced into the grinding cylinder 14 through the water inlet pipe 15 and flows out from the water outlet pipe 16 to achieve overall cooling of the grinding mechanism 1.

[0031] In this embodiment: the screening mechanism 5 includes a screen 52, which is tilted and arranged on the lower side of the grinding cylinder 14, and a discharge plate 53 is fixed on the lower side of the screen 52. Two vibration motors 51 are symmetrically arranged on both sides of the screen 52, and four support columns 54 are arranged on the lower side of the screen 52. Springs are installed on the upper ends of the support columns 54, and the springs are fixedly connected to the lower side of the screen 52. Four supporting cross bars 55 are fixed between the four support columns 54, and two slide rails 56 are fixed on the supporting cross bars 55 on both sides. The upper ends of the slide rails 56 are slidably connected to the screen 52, and the vibration motor 51 drives the screen 52 to vibrate. The slide rails 56 limit the vibration direction of the screen 52. Qualified materials pass through the screen 52 and fall into the collection box 4, and unqualified materials slide to the lower end. The slide rails 56 limit the vibration direction of the screen 52.

[0032] In this embodiment, the inner wall of the grinding cylinder 14 is inclined, so that the gap between the inner wall of the grinding cylinder 14 and the grinding wheel 13 is wide at the top and narrow at the bottom. The wide-at-top and narrow-at-bottom gap facilitates feeding while also gradually grinding the feed that falls by gravity.

[0033] In this embodiment: four support rods 7 are fixed circumferentially on the lower side of the circular bracket 2, and a support base 3 for fixing the spiral feeding mechanism 6 is provided on the circular bracket 2. The four support rods 7 support the grinding mechanism 1 as a whole to ensure the stability of the entire mechanism.

[0034] In this embodiment, a feed hopper 8 for receiving the material sent out by the discharge hopper 62 is fixed on the upper side of the grinding cylinder 14. The feed hopper 8 ensures that the feed enters the grinding mechanism 1 smoothly and prevents the material sent out from the discharge hopper 62 from spilling.

[0035] In this embodiment, grinding grooves are provided on the circumference of the surface of the grinding wheel 13 , which form grinding edges on the surface of the grinding wheel 13 . The grinding edges cooperate with the inner wall of the grinding cylinder 14 to better grind the feed material.

[0036] In this embodiment, a gap is provided between the grinding cylinder 14 and the grinding wheel 13 to allow the material to fall after grinding. A discharge port is provided on the lower side of the grinding cylinder 14. The conical grinding cylinder 14 facilitates the output and collection of the abrasive.

[0037] In this embodiment: the spiral feeding mechanism 6 includes a feeding barrel 61, which is arranged on one side of the grinding barrel 14, and a screw rod 64 is rotatably connected inside the grinding barrel 14. A second motor 65 is provided at the lower end of the feeding barrel 61, and the output end of the second motor 65 is fixedly connected to the screw rod 64. A discharge port is provided on the upper end of the feeding barrel 61 close to the grinding barrel 14, and a discharge hopper 62 is fixed to the discharge port. A feeding funnel 63 is provided on the upper end of the feeding barrel 61 close to the grinding barrel 14, and the lower end of the feeding funnel 63 is connected to the feeding barrel 61, and the water outlet pipe 16 and the water inlet pipe 15 are both arranged on the side of the grinding barrel 14 away from the feeding barrel 61. The feeding funnel 63 transports unqualified materials that are not fully ground into the inside of the grinding barrel 14, and the output end of the second motor 65 drives the screw rod 64 to rotate, and the screw rod 64 drives the unqualified materials to move spirally upward, and finally is re-sent into the grinding mechanism 1 through the discharge hopper 62.

[0038] Working principle: Start the first motor 11, and the output end of the first motor 11 drives the grinding wheel 13 to rotate. The grinding wheel 13 cooperates with the grinding cylinder 14 to grind the material. At the same time, cooling water is introduced into the grinding cylinder 14 through the water inlet pipe 15 and flows out from the water outlet pipe 16 to achieve overall cooling of the grinding mechanism 1, and the abrasive falls onto the screen 52 through the discharge port. At this time, start the vibration motor 51, and the vibration motor 51 drives the screen 52 to vibrate up and down along the slide rail 56. The qualified ground material passes through the screen 52 and falls into the collection box 4. The unqualified material falls into the feed funnel 63 through the discharge plate 53. The feed funnel 63 transports the material into the feeding cylinder 61. At this time, start the second motor 65, and the output end of the second motor 65 drives the screw rod 64 to rotate. The screw rod 64 drives the feed spiral to rise, and then the feed is transported to the discharge port by the screw rod 64, falls into the feed hopper 8 through the discharge hopper 62, and the feed hopper 8 transports the unqualified material to the grinding mechanism 1 for grinding again.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements shall fall within the scope of the present invention as claimed.

Claims

1. A grinding device for EVA recycled plastic particles, comprising a circular ring support (2), a collecting box (4) being provided on the lower side of the circular ring support (2), characterized in that: It also includes a grinding mechanism (1) and a screening mechanism (5) for grinding EVA recycled plastic particles; The grinding mechanism (1) comprises a support plate (12), the support plate (12) being fixed on the upper side of the circular bracket (2), a first motor (11) being mounted on the upper side of the support plate (12), a grinding cylinder (14) being fixed on the inner side of the circular bracket (2), a grinding wheel (13) being arranged inside the grinding cylinder (14), the upper side of the grinding wheel (13) being fixedly connected to the output end of the first motor (11), the cylinder wall of the grinding cylinder (14) being hollow and a water outlet pipe (16) being provided on the upper side, and a water inlet pipe (15) being provided on the lower side of the grinding cylinder (14); The screening mechanism (5) comprises a screen (52), the screen (52) being tiltedly arranged on the lower side of the grinding cylinder (14), a discharge plate (53) being fixed on the lower side of the screen (52), two vibration motors (51) being symmetrically arranged on both sides of the screen (52), four support columns (54) being arranged on the lower side of the screen (52), springs being installed on the upper ends of the support columns (54), and being fixedly connected to the lower side of the screen (52), four support cross bars (55) being fixed between the four support columns (54), two slide rails (56) being fixed on the support cross bars (55) on both sides, the upper ends of the slide rails (56) being slidably connected to the screen (52), and a spiral feeding mechanism (6) being arranged at the discharge plate (53).

2. The EVA recycled plastic pellet grinding device according to claim 1, characterized in that: The inner wall of the grinding cylinder (14) is inclined, so that the gap between the inner wall of the grinding cylinder (14) and the grinding wheel (13) is wider at the top and narrower at the bottom.

3. The EVA recycled plastic pellet grinding device according to claim 1, characterized in that: Four support rods (7) are fixed circumferentially on the lower side of the circular ring bracket (2), and a support seat (3) for fixing the spiral feeding mechanism (6) is provided on the circular ring bracket (2).

4. The EVA recycled plastic pellet grinding device according to claim 1, characterized in that: A feed hopper (8) for receiving materials delivered by a discharge hopper (62) is fixed on the upper side of the grinding cylinder (14).

5. The grinding device for EVA recycled plastic particles according to claim 1, characterized in that: The surface of the grinding wheel (13) is provided with grinding grooves in the circumferential direction.

6. The EVA recycled plastic pellet grinding device according to claim 1, characterized in that: A gap is provided between the grinding cylinder (14) and the grinding wheel (13) to allow the material to fall after being ground, and a discharge port is provided on the lower side of the grinding cylinder (14).

7. The EVA recycled plastic pellet grinding device according to claim 1, characterized in that: The spiral feeding mechanism (6) comprises a feeding barrel (61), the feeding barrel (61) being arranged on one side of the grinding barrel (14), the grinding barrel (14) being internally connected with a spiral rod (64), the lower end of the feeding barrel (61) being provided with a second motor (65), the output end of the second motor (65) being fixedly connected to the spiral rod (64), the upper end of the feeding barrel (61) being close to the grinding barrel (14) being provided with a discharge port, the discharge port being fixed with a discharge hopper (62), the upper end of the feeding barrel (61) being close to the grinding barrel (14) being provided with a feed funnel (63), the lower end of the feed funnel (63) being connected with the feeding barrel (61), the water outlet pipe (16) and the water inlet pipe (15) being both arranged on the side of the grinding barrel (14) away from the feeding barrel (61).

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