Plastic particle screening and packaging device

Abstract

The utility model relates to the technical field of plastic particle production, in particular to a plastic particle screening and packaging device which comprises a feeding device, a screening device and a plurality of weighing devices, the screening device comprises two side plates which are symmetrically distributed, a roller is rotatably connected between the two side plates through bearings, and the weighing devices are arranged on the two side plates. A plurality of sets of sieve holes with the hole diameters gradually increased from left to right are formed in the outer wall of the roller, a spiral blade is fixedly connected to the inner wall of the roller, a mounting plate located above the roller is fixedly connected between the two side plates, and a brush plate abutting against the roller is fixedly connected to the lower end face of the mounting plate; materials are pushed through the spiral blades in the roller and matched with the gradient screen holes to achieve dynamic grading screening, meanwhile, a weighing and packaging system is integrated, full-process automatic continuous operation of plastic particles from screening to packaging is achieved, and the plastic particle screening machine has the advantages of being compact in structure, high in screening efficiency and good in packaging precision.

Description

Technical Field

[0001] This utility model relates to the field of plastic pellet production technology, and specifically discloses a plastic pellet screening and packaging device. Background Technology

[0002] Plastic granules are small granular substances obtained by decomposing and processing various plastics. Common types of plastic granules include resin granules and recycled granules. Plastic granules have a wide range of applications, including the manufacture of plastic products, cable covers, wire rope wrapping materials, protective partitions, and non-woven fabrics in industrial fields, as well as the production of everyday items such as plastic bags, plastic buckets, plastic furniture, plastic containers, and plastic bottles. Plastic granules are produced during the modification of plastics; they are typically made into granular structures by extrusion equipment and die-cutting.

[0003] Chinese patent CN221316731U discloses a plastic granule screening and packaging device, belonging to the field of starch-based biodegradable plastic production and processing. It solves the problem in existing technologies where weighing, packaging, and screening of plastic granules cannot be performed simultaneously. It mainly includes a feeding device, a bag-sealing machine, and a conveyor belt. The feeding device includes a hopper, a screening structure, and a weighing device. The hopper is positioned above the weighing device. A screening structure is located between the hopper and the weighing device, comprising a support rod and a screen. Weighing devices are correspondingly positioned below the screen. This invention primarily utilizes the screen to simultaneously weigh and package three different sizes of plastic granules, saving manpower and further improving work efficiency.

[0004] The plastic granule screening and packaging device disclosed in the above document is prone to clogging by plastic granules during use, which affects screening efficiency and requires manual cleaning by operators. Therefore, a plastic granule screening and packaging device is needed to solve this problem. Utility Model Content

[0005] This utility model proposes a plastic granule screening and packaging device, which uses spiral blades inside the roller to push the material and cooperates with gradient screen holes to achieve dynamic grading and screening. At the same time, it integrates a weighing and packaging system, realizing the fully automated continuous operation of plastic granules from screening to packaging. It has the advantages of compact structure, high screening efficiency and good packaging accuracy.

[0006] This utility model is implemented as follows: a plastic granule screening and packaging device includes a feeding device, a screening device, and multiple weighing devices. The screening device includes two symmetrically distributed side plates, and a roller is rotatably connected between the two side plates via bearings. The outer wall of the roller has multiple sets of sieve holes with gradually increasing diameters from left to right. A spiral blade is fixedly connected to the inner wall of the roller. A mounting plate located above the roller is fixedly connected between the two side plates, and a brush plate that abuts against the roller is fixedly connected to the lower end face of the mounting plate.

[0007] As a preferred embodiment of the plastic granule screening and packaging device of this utility model, the weighing device includes a metering hopper with a solenoid valve at the discharge port, a weighing module and a controller. A support plate is fixedly connected between the two side plates. The weighing module is installed on the upper surface of the support plate. A support block is provided at the upper end of the weighing module. The metering hopper is in contact with the upper end of the support block. The weighing module and the solenoid valve are both electrically connected to the controller.

[0008] As a preferred embodiment of the plastic granule screening and packaging device of this utility model, the weighing device further includes a conveyor belt on which packaging bags are mounted.

[0009] As a preferred embodiment of the plastic granule screening and packaging device of this utility model, the feeding device includes a hopper, the outer wall of the hopper's outlet is provided with a valve, and a discharge pipe extends into the inside of the roller.

[0010] As a preferred embodiment of the plastic granule screening and packaging device of this utility model, a drive motor is installed on the left end face of the right side plate, the output end of the drive motor extends to the right side of the right side plate and is fixedly connected to a first gear, and a second gear that meshes with the first gear is fixedly connected to the outer wall of the roller.

[0011] As a preferred embodiment of the plastic granule screening and packaging device of this utility model, a receiving box is provided on the outer wall of the right-side side plate.

[0012] As a preferred embodiment of the plastic granule screening and packaging device of this utility model, a retaining ring is fixedly connected to the left end face of the roller.

[0013] The beneficial effects of this utility model are:

[0014] 1. The plastic granules are driven by the spiral blades inside the roller, and dynamic grading and screening are achieved in conjunction with the gradient screen holes. At the same time, the rotating screen holes are automatically cleaned by the brush plate to ensure a smooth and efficient screening process. The screened granules directly enter the weighing and packaging system, and the feeding and packaging are precisely controlled by the controller to reduce manual intervention and improve production efficiency.

[0015] 2. The roller screening and weighing device are linked, which makes the screening, metering and packaging process seamlessly connected, avoiding the problem of secondary material handling caused by traditional separate equipment, reducing energy consumption and saving space, and is suitable for the automated packaging needs of plastic granules of different sizes. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 This is an overall structural diagram of a plastic granule screening and packaging device according to the present invention.

[0018] Figure 2 This is a front sectional view of a plastic granule screening and packaging device according to the present invention.

[0019] Figure 3 This is a structural diagram of the roller of this utility model.

[0020] The markings in the diagram are: 1. Hopper; 2. Discharge pipe; 3. Side plate; 4. Roller; 5. Screen hole; 6. Spiral blade; 7. Drive motor; 8. First gear; 9. Second gear; 10. Mounting plate; 11. Brush plate; 12. Support plate; 13. Weighing module; 14. Measuring hopper; 15. Conveyor belt; 16. Packaging bag; 17. Receiving box; 18. Controller; 19. Retaining ring. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0022] Please see Figure 1-3 A plastic granule screening and packaging device includes a feeding device, a screening device, and multiple weighing devices. The screening device includes two symmetrically distributed side plates 3, and a roller 4 is rotatably connected between the two side plates 3 via bearings. The outer wall of the roller 4 has multiple sets of sieve holes 5 with gradually increasing diameters from left to right. A spiral blade 6 is fixedly connected to the inner wall of the roller 4. A mounting plate 10 located above the roller 4 is fixedly connected between the two side plates 3. A brush plate 11 that abuts against the roller 4 is fixedly connected to the lower end face of the mounting plate 10.

[0023] In this embodiment: the rotating roller 4 drives the spiral blade 6 to rotate, thereby conveying the plastic particles entering the roller 4 to the right. During the process of conveying the plastic particles to the right, the plastic particles are screened through multiple sets of screen holes 5 with the aperture gradually increasing to the right. The screened plastic particles fall downward into the weighing device for weighing. When the roller 4 rotates, the brush plate 11 on the upper side cleans the particles that are blocked in the screen holes 5 to prevent the screen holes 5 from being blocked and affecting the screening efficiency.

[0024] As a technical optimization of this utility model, the weighing device includes a metering hopper 14 with a solenoid valve at the discharge port, a weighing module 13, and a controller 18. A support plate 12 is fixedly connected between the two side plates 3. The weighing module 13 is installed on the upper surface of the support plate 12. A support block is provided at the upper end of the weighing module 13. The metering hopper 14 is in contact with the upper end of the support block. The weighing module 13 and the solenoid valve are both electrically connected to the controller 18.

[0025] In this embodiment: the weighing module 13 is model HY-CWC-EX, which is used to detect the weight of plastic particles in the measuring hopper 14. The controller 18 can control the opening and closing of the solenoid valve according to the weight measured by the weighing module 13.

[0026] As a technical optimization of this utility model, the weighing device also includes a conveyor belt 15, on which a packaging bag 16 is provided.

[0027] In this embodiment, the conveyor belt 15 facilitates the transport of the packaging bag 16.

[0028] As a technical optimization of this utility model, the feeding device includes a hopper 1, a valve is provided on the outer wall of the discharge port of the hopper 1, and a discharge pipe 2 extends into the inside of the roller 4.

[0029] In this embodiment: plastic granules are poured into hopper 1, and the valve on the outer wall of discharge pipe 2 is opened, allowing the plastic granules to enter roller 4 through discharge pipe 2.

[0030] As a technical optimization of this utility model, a drive motor 7 is installed on the left end face of the right side plate 3. The output end of the drive motor 7 extends to the right side of the right side plate 3 and is fixedly connected to the first gear 8. The outer wall of the roller 4 is fixedly connected to the second gear 9, which meshes with the first gear 8.

[0031] In this embodiment: the drive motor 7 is started, the drive motor 7 drives the first gear 8 to rotate, which in turn drives the second gear 9 to rotate, and the second gear 9 further drives the roller 4 to rotate, thereby conveying and screening the plastic particles.

[0032] As a technical optimization of this utility model, a receiving box 17 is provided on the outer wall of the right side plate 3.

[0033] In this embodiment: the receiving box 17 facilitates the collection of unsuccessfully screened plastic particles, which are then poured back into the hopper 1 for screening and packaging after being accumulated.

[0034] As a technical optimization of this utility model, a retaining ring 19 is fixedly connected to the left end face of the roller 4.

[0035] In this embodiment, a retaining ring 19 is fixedly connected to the left end face of the roller 4 to prevent plastic particles from falling out from the left end of the roller 4.

[0036] The working principle and usage process of this utility model are as follows: First, plastic granules are poured into the hopper 1. The valve on the outer wall of the discharge pipe 2 is opened, allowing the plastic granules to enter the roller 4 through the discharge pipe 2. Then, the drive motor 7 is started, which drives the first gear 8 to rotate, which in turn drives the second gear 9 to rotate. The second gear 9 further drives the roller 4 to rotate, and the roller 4 drives the spiral blades 6 to rotate, thus conveying the plastic granules into the roller 4 to the right. During this rightward conveying process, the plastic granules are screened through multiple sets of sieve holes 5, which gradually increase in size to the right. The screened plastic granules fall downwards into the weighing device for weighing. When the weighing module 13 detects that the weight of the plastic granules in the metering hopper 14 has reached the set value, the controller 18 opens the solenoid valve on the outer wall of the metering hopper 14, allowing the plastic granules to fall into the packaging bag 16. The conveyor belt 15 is then started to transport the packaging bag 16 to the subsequent sealing setting for sealing. As the roller 4 rotates, the brush plate 11 on the upper side cleans the granules blocking the sieve holes 5, preventing blockage and ensuring efficient screening.

[0037] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A plastic granule screening and packaging device, comprising a feeding device, a screening device, and multiple weighing devices, characterized in that: The screening device includes two symmetrically distributed side plates (3), and a roller (4) is rotatably connected between the two side plates (3) via bearings. The outer wall of the roller (4) has multiple sets of screen holes (5) with gradually increasing diameters from left to right. A spiral blade (6) is fixedly connected to the inner wall of the roller (4). A mounting plate (10) located above the roller (4) is fixedly connected between the two side plates (3). A brush plate (11) that abuts against the roller (4) is fixedly connected to the lower end face of the mounting plate (10).

2. The plastic granule screening and packaging device according to claim 1, characterized in that: The weighing device includes a metering hopper (14) with a solenoid valve at the discharge port, a weighing module (13), and a controller (18). A support plate (12) is fixedly connected between the two side plates (3). The weighing module (13) is installed on the upper surface of the support plate (12). A support block is provided at the upper end of the weighing module (13). The metering hopper (14) is in contact with the upper end of the support block. The weighing module (13) and the solenoid valve are both electrically connected to the controller (18).

3. The plastic granule screening and packaging device according to claim 2, characterized in that: The weighing device also includes a conveyor belt (15) on which packaging bags (16) are disposed.

4. The plastic granule screening and packaging device according to claim 1, characterized in that: The feeding device includes a hopper (1), the outer wall of the outlet of the hopper (1) is provided with a valve, and the discharge pipe (2) extends into the inside of the roller (4).

5. A plastic granule screening and packaging device according to claim 1, characterized in that: A drive motor (7) is installed on the left end face of the right side plate (3). The output end of the drive motor (7) extends to the right side of the right side plate (3) and is fixedly connected to a first gear (8). A second gear (9) that meshes with the first gear (8) is fixedly connected to the outer wall of the roller (4).

6. A plastic granule screening and packaging device according to claim 1, characterized in that: A receiving box (17) is provided on the outer wall of the side plate (3) located on the right side.

7. A plastic granule screening and packaging device according to claim 1, characterized in that: A retaining ring (19) is fixedly connected to the left end face of the roller (4).

Images