Plastic crushing and screening device

Abstract

The utility model provides a plastic crushing and screening device, and belongs to the technical field of crushing and screening. Comprising a screening frame, a feeding assembly is arranged at the top of the screening frame, a discharging frame is arranged on one side of the screening frame, a driving assembly is installed on one side of the screening frame, a roller is rotationally arranged in the screening frame, a screen is arranged on the surface of the roller, and one side of the screen extends out of the roller; and a connecting rod is fixedly installed in the roller, a shifting rod is fixedly installed on the surface of the connecting rod, and screen holes are formed in the surface of the screen and are designed into strip-shaped notches. The device has the advantages that when the driving lever rotates, the flaky objects are continuously carded and continuously move, so that strip-shaped sundries clamped between the flaky objects are separated from the flaky objects, the active degree of the screened objects during screening of the roller is improved, dust and foam mixed in the flaky objects are easier to clean and separate, and the screening time of the flaky objects is shortened.

Description

Technical Field

[0001] The utility model belongs to the technical field of crushing and screening, and in particular relates to a plastic crushing and screening device. Background Art

[0002] The resources available to humans can be divided into two categories: non-renewable resources and renewable resources. Renewable resources are a type of renewable resources, including steel, non-ferrous metals, rare metals, alloys, inorganic non-metals, plastics, rubber, fibers, paper, etc. that are produced with minerals as raw materials and then scrapped.

[0003] At present, the recyclable resources in waste refrigerators mainly include plastics, iron materials and non-ferrous metals including copper and aluminum. When recycling waste refrigerator resources, it is necessary to screen and classify the different materials of waste refrigerators. After the refrigerator shell is broken, it includes fragmented metal and plastic, strips of rubber of different lengths, crushed foam plastics of the insulation layer and dust particles. Before separating the metal and plastic, it is necessary to separate the strip plastics, crushed foam plastics of the insulation layer and dust particles. Traditional screening methods include drum screening and vibration screening.

[0004] 1. The existing drum screening uses a rotating drum to screen objects of different sizes. The rotating drum can prevent the objects from clogging the small holes on the drum when rotating. However, when the sizes are mixed, the effect of sorting the sheet objects is poor. The strip-shaped debris is stacked between the sheet objects, and the dust and foam mixed in the sheet objects are not easy to clean and separate. The screening effect of the sheet objects relying solely on the rotating drum is poor, which makes the screening time longer.

[0005] 2. Drum screening usually uses small holes to screen objects of different sizes, but it is difficult to screen strip rubber with small holes. Utility Model Content

[0006] The technical problem to be solved by the utility model is that drum screening usually utilizes small holes to screen objects of different sizes, but it is difficult to screen long strips of foam plastics. Aiming at the deficiencies of the prior art, a plastic crushing and screening device is provided.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0008] It includes a screening frame, a feeding assembly is arranged on the top of the screening frame, a discharging frame is arranged on one side of the screening frame, a driving assembly is installed on one side of the screening frame, a roller is rotatably arranged inside the screening frame, a screen is arranged on the surface of the roller, one side of the screen extends out of the roller, a connecting rod is fixedly installed inside the roller, a shifting rod is fixedly installed on the surface of the connecting rod, and sieve holes are arranged on the surface of the screen, and the sieve holes are designed as strip-shaped slots.

[0009] Furthermore, the sieve holes include long sieve holes and short sieve holes, and the length of the long sieve holes is greater than that of the short sieve holes.

[0010] Furthermore, the long sieve holes and the short sieve holes are arranged alternately.

[0011] Furthermore, the sieve holes are long strip-shaped slots, and the sieve holes are obliquely arranged on the surface of the sieve.

[0012] Furthermore, a hoop is provided on the surface of the screen, and threaded holes are provided on the surfaces of the hoop, the drum and the screen. The hoop is screwed into the threaded hole to fix the screen on the surface of the drum.

[0013] Furthermore, the feeding assembly includes a feeding hopper, an extension pipe is provided at the bottom of the feeding hopper, one end of the extension pipe extends into the interior of the screen, and the extension pipe is fixedly installed on the top of the screening frame.

[0014] Furthermore, the screening frame is shaped like an inverted cone, a discharge slot is provided on one side of the screening frame, a portion of one end of the screen extends out of the screening frame through the discharge slot, and the discharging frame is installed on the screening frame outside the discharge slot.

[0015] Furthermore, the driving assembly includes a motor installed on one side of the screening frame, the output end of the motor is connected to a rotating shaft, and the rotating shaft is fixedly installed with the axis of the drum.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0017] 1. When the lever rotates, it continuously combs the sheet objects, making them move continuously, thereby separating the strip-shaped debris sandwiched between the sheets from the sheets, improving the activity of the screened objects during drum screening, making it easier to clean and separate the dust and foam mixed in the sheets, and shortening the screening time of the sheets.

[0018] 2. The drum screening of this device uses long sieve holes and short sieve holes of different lengths to screen strip-shaped objects of different lengths. It is more convenient to screen long strips through long sieve holes and short sieve holes than through densely distributed sieve holes, thus avoiding the strips from being stuck between the densely distributed sieve holes.

[0019] 3. When the lever moves the strip-like debris, the strip-like debris will become tilted. By pre-setting the inclined sieve holes on the screen to match the tilt angle, the strip-like debris will enter the sieve holes and the entire section will be easier to separate from the sieve holes when the drum rotates, further accelerating the screening of the strip-like debris and shortening the screening time of the flakes. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0021] Figure 1 : Schematic structural diagram of the three-dimensional structure in Embodiment 1 of the present utility model;

[0022] Figure 2 : Schematic cross-sectional structural diagram in Embodiment 1 of the present utility model;

[0023] Figure 3 : Schematic structural diagram of the drum and the screen in Embodiment 1 of the present utility model;

[0024] Figure 4 : In Embodiment 1 of the present utility model Figure 3 Schematic exploded structural diagram;

[0025] Figure 5 : Schematic structural diagram of the sieve holes in Embodiment 2 of the present utility model;

[0026] Figure 6 : Schematic structural diagram of the sieve holes in Embodiment 3 of the present utility model.

[0027] Among them, 10 is the screening frame; 11 is the discharge trough; 20 is the feeding assembly; 21 is the feeding hopper; 22 is the extension pipe; 30 is the discharge frame; 40 is the driving assembly; 41 is the motor; 42 is the rotating shaft; 50 is the drum; 51 is the screen; 52 is the connecting rod; 53 is the stirring rod; 54 is the sieve hole; 541 is the long sieve hole; 542 is the short sieve hole; 55 is the hoop; 56 is the threaded hole. Detailed implementation manners

[0028] In order to better understand the present utility model, the content of the present utility model will be further clearly described below in conjunction with the embodiments. However, the protection scope of the present utility model is not limited to the following embodiments only. In the following description, a large number of specific details are given to provide a more thorough understanding of the present utility model. However, it is obvious to those skilled in the art that the present utility model can be implemented without one or more of these details.

[0029] Embodiment 1: Refer to Figures 1-4, A plastic crushing and screening device according to this embodiment includes a screening frame 10. A feeding component 20 is provided at the top of the screening frame 10. A discharging frame 30 is provided on one side of the screening frame 10. A driving component 40 is installed on one side of the screening frame 10. A roller 50 is rotatably arranged inside the screening frame 10. Support legs are provided at the bottom of the screening frame 10. Two groups of support legs on the side close to the feeding component 20 are higher than the support legs on the side close to the discharging frame 30, making the roller 50 in an inclined state. The driving component 40 drives the roller 50 to rotate. A screen 51 is provided on the surface of the roller 50. The roller 50 drives the screen 51 to rotate. One side of the screen 51 extends outside the roller 50. A part of the feeding component 20 extends into the interior of the part where the screen 51 extends out of the roller 50. Screen holes 54 are provided on the surface of the screen 51. The screen holes 54 are designed as strip-shaped notches. A connecting rod 52 is fixedly installed inside the roller 50. The rotation of the roller 50 drives the connecting rod 52 to rotate. A dial rod 53 is fixedly installed on the surface of the connecting rod 52. The rotation of the connecting rod 52 drives the dial rod 53 to rotate. The sheet-like items to be screened are always at the bottom of the roller 50 due to gravity. When the dial rod 53 rotates, it continuously combs the sheet-like items, making the sheet-like items move continuously, thereby separating the strip-shaped sundries sandwiched between the sheet-like items from the sheet-like items.

[0030] Refer to Figures 3-4 , A hoop 55 is provided on the surface of the screen 51. Threaded holes 56 are provided on the surfaces of the hoop 55, the roller 50 and the screen 51. The screen 51 is fixed on the surface of the roller 50 by screwing the hoop 55 into the threaded holes 56. When the screen 51 is attached to the surface of the roller 50, the screen 51 contacts the dial rod 53. Then the hoop 55 is sleeved outside the screen 51 to align the threaded holes 56, and the screw is screwed into the threaded holes 56 to complete the assembly of the roller 50 and the screen 51. During use, the dial rod 53 provides part of the support for the screen 51.

[0031] Refer to Figures 1-2 , The feeding component 20 includes a feeding hopper 21. The feeding hopper 21 is a rectangular frustum structure with a large upper opening and a small lower opening. An extension pipe 22 is provided at the bottom of the feeding hopper 21. One end of the extension pipe 22 extends into the interior of the screen 51. During feeding, the extension pipe 22 enables the materials to be screened to enter the roller 50. The extension pipe 22 is fixedly installed on the top of the screening frame 10.

[0032] Refer to Figures 1-2 , The shape of the screening frame 10 is an inverted rectangular frustum shape that is connected up and down. A discharge groove 11 is provided on one side of the screening frame 10. A part of one end of the screen 51 extends out of the screening frame 10 through the discharge groove 11. The discharging frame 30 is installed outside the screening frame 10 at the position of the discharge groove 11. The screened sheet-like items are discharged from the roller 50 through the discharge groove and the discharging frame 30, enabling the device to discharge the screened materials without stopping the machine.

[0033] See also Figures 1-2 The driving assembly 40 includes a motor 41 installed on one side of the screening frame 10. The output end of the motor 41 is connected to a rotating shaft 42. After the motor 41 is started, the rotating shaft 42 is driven to rotate. The rotating shaft 42 is fixedly installed with the axis of the drum 50, and the rotating shaft 42 further drives the drum 50 to rotate.

[0034] Beneficial effects:

[0035] 1. The driving assembly 40 drives the drum 50 to rotate, and the rotation of the drum 50 drives the connecting rod 52 to rotate, and the rotation of the connecting rod 52 drives the lever 53 to rotate. At the same time, the drum 50 drives the screen 51 to rotate. The sheet objects to be screened are always at the bottom of the drum 50 due to gravity. When the lever 53 rotates, the sheet objects are continuously combed to make the sheet objects move continuously, so that the strip-shaped debris sandwiched between the sheets are separated from the sheets, thereby improving the activity of the screened objects during drum screening, making it easier to clean and separate the dust and foam mixed in the sheets, and shortening the screening time of the sheets.

[0036] Embodiment 2: Embodiment 2 is a further improvement made on the basis of Embodiment 1, see Figure 5 In a plastic crushing and screening device of this embodiment, the sieve holes 54 include long sieve holes 541 and short sieve holes 542 , and the length of the long sieve holes 541 is greater than that of the short sieve holes 542 .

[0037] See also Figure 5 In the A and B sub-figures, the long sieve holes 541 and the short sieve holes 542 are arranged alternately, the A sub-figure is arranged alternately in the longitudinal direction, and the B sub-figure is arranged alternately in the transverse direction.

[0038] Beneficial effect: The drum screening of the device utilizes long sieve holes 541 and short sieve holes 542 of different lengths to screen strip-shaped objects of different lengths. It is more convenient to screen the strips through the long sieve holes 541 and the short sieve holes 54 than through densely distributed sieve holes, thus avoiding the strips from being stuck in the sieve holes.

[0039] Embodiment 3: Embodiment 3 is a further improvement made on the basis of Embodiment 1, see Figure 6 In the plastic crushing and screening device of this embodiment, the sieve holes 54 are long strip-shaped slots, and the sieve holes 54 are spirally inclined and are arranged at equal intervals on the surface of the sieve 51.

[0040] Beneficial effect: When the lever 53 moves the strip-like debris, the strip-like debris will become tilted. By pre-arranging the tilted sieve holes 54 on the sieve 51, when the drum 50 rotates, the tilted strip-like debris enters the sieve holes 54 and the entire section is more easily separated from the sieve holes 54, further accelerating the screening of the strip-like debris and shortening the screening time of the sheet-like objects.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model rather than to limit them. Any other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present utility model shall be covered within the scope of the claims of the present utility model as long as they do not depart from the spirit and scope of the technical solutions of the present utility model.

[0042] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, various changes and modifications can be made to the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A plastic crushing and screening device, characterized in that: The invention comprises a screening frame (10), wherein a feeding assembly (20) is arranged on the top of the screening frame (10), a discharging frame (30) is arranged on one side of the screening frame (10), a driving assembly (40) is installed on one side of the screening frame (10), a roller (50) is rotatably arranged inside the screening frame (10), a screen (51) is arranged on the surface of the roller (50), one side of the screen (51) extends out of the roller (50), a connecting rod (52) is fixedly installed inside the roller (50), a lever (53) is fixedly installed on the surface of the connecting rod (52), and a screen hole (54) is arranged on the surface of the screen (51), and the screen hole (54) is designed as a strip-shaped slot.

2. The plastic crushing and screening device according to claim 1, characterized in that: The sieve holes (54) include long sieve holes (541) and short sieve holes (542), and the length of the long sieve holes (541) is greater than that of the short sieve holes (542).

3. The plastic crushing and screening device according to claim 2, characterized in that: The long sieve holes (541) and the short sieve holes (542) are arranged alternately.

4. The plastic crushing and screening device according to claim 1, characterized in that: The sieve holes (54) are long strip-shaped slots, and the sieve holes (54) are arranged obliquely on the surface of the sieve (51).

5. The plastic crushing and screening device according to claim 1, characterized in that: A hoop (55) is provided on the surface of the screen (51), and threaded holes (56) are provided on the surfaces of the hoop (55), the roller (50), and the screen (51). The hoop (55) is screwed into the threaded hole (56) to fix the screen (51) on the surface of the roller (50).

6. The plastic crushing and screening device according to claim 1, characterized in that: The feeding assembly (20) comprises a feeding hopper (21), an extension pipe (22) is provided at the bottom of the feeding hopper (21), one end of the extension pipe (22) extends into the interior of the screen (51), and the extension pipe (22) is fixedly mounted on the top of the screening frame (10).

7. The plastic crushing and screening device according to claim 1, characterized in that: The screening frame (10) is in the shape of an inverted frustum, a discharge slot (11) is provided on one side of the screening frame (10), a portion of one end of the screen (51) extends out of the screening frame (10) through the discharge slot (11), and the discharging frame (30) is installed on the screening frame (10) outside the discharge slot (11).

8. The plastic crushing and screening device according to claim 1, characterized in that: The driving assembly (40) comprises a motor (41) mounted on one side of the screening frame (10), the output end of the motor (41) being connected to a rotating shaft (42), and the rotating shaft (42) being fixedly mounted to the axis of the drum (50).

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