Plastic particle grading screening device

Abstract

The utility model discloses a plastic particle classifying and screening device, which relates to the technical field of plastic processing and comprises a screening box, a material rolling bin and a storage bin are arranged in the screening box from top to bottom, and a feeding pipe communicated with the material rolling bin is mounted at the top of the screening box; the horizontal driving mechanism is mounted in the screening box; the two sets of cleaning boxes are installed on the two sides of the screening box correspondingly, and cleaning assemblies are installed in the two sets of cleaning boxes correspondingly. And the screening plate is connected with the horizontal driving mechanism, and the screening plate moves between the rolling bin and the cleaning box based on the horizontal driving mechanism. Plastic particles are screened through the screening plate, during screening, the flowing speed of the plastic particles on the screening plate can be reduced by arranging the buffering assembly, meanwhile, the contact strength of the plastic particles and the screening plate is increased through the first air blowing mechanism, and therefore the screening efficiency and quality are improved.

Description

Technical Field

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

[0002] After plastics are processed into particles, particles of different sizes will affect the quality and performance of plastic products. Therefore, grading and screening of plastic particles has become an important part of the plastic processing industry.

[0003] After searching, a Chinese patent (publication number: CN208865922U) discloses a plastic particle grading and screening device, which includes a box body, a first screening chamber, a second screening chamber, a small particle collection chamber, a large particle collection chamber and a material lifting chamber are arranged in the box body, a feed port is arranged at the upper end of the box body, an inclined screen cylinder is arranged in the first screening chamber, a pipe connecting the feed port, the material lifting chamber and the screen cylinder is arranged in the first screening chamber, the downward end of the screen cylinder extends into the second screening chamber, an inclined first screening net is arranged at the lower end of the second screening chamber, the downward end of the first screening net extends into the large particle collection chamber, and an inclined second screening net is arranged on the upper side of the small particle collection chamber.

[0004] In the prior art, a screen is usually used to screen plastic particles. After a long period of screening, it is necessary to prevent the plastic particles from clogging the screen holes of the screen. Therefore, the utility model proposes a plastic particle grading and screening device. Utility Model Content

[0005] The utility model aims to provide a plastic particle grading and screening device.

[0006] The technical problem solved by the utility model is how to avoid the problem of clogging of the screen after long-term screening of plastics.

[0007] The utility model can be implemented by the following technical scheme: a plastic particle grading and screening device, comprising a screening box, a feed pipe is installed on the top of the screening box, and an inclined rolling bin is opened inside the screening box, a horizontal driving mechanism is installed at the bottom end of the rolling bin, and a screening plate is installed at the output end of the horizontal driving mechanism;

[0008] The screening plate is provided with screening areas from high to low, and the screen hole diameters of the screening areas decrease from high to low;

[0009] Cleaning boxes are installed on both sides of the screening box, and the two sets of cleaning boxes are connected to the rolling bin, and cleaning components are installed inside the two cleaning boxes;

[0010] A storage bin is provided inside the screening box at the lower side of the rolling bin and the lower side of the two groups of cleaning bins. A plurality of recycling bins are installed inside the storage bin, and each recycling bin corresponds to a group of screening areas respectively.

[0011] The screening plate is based on a horizontal driving mechanism and moves between a group of cleaning boxes and a rolling bin. The screening plate is located in the area inside the rolling bin and is used to screen the plastic particles. The screening plate is located in the area inside the corresponding cleaning box and cleans the cleaning box after it is started.

[0012] The two sides of the screening plate are slidably connected to the connecting parts of the two groups of cleaning boxes and the rolling bin, and the connecting parts are filled, and a part of the screening plate is always kept inside the rolling bin;

[0013] After the plastic particles enter the rolling bin along the feed pipe, they slide along the screening plate, and the screening plate fills the connecting area between the two sets of cleaning boxes and the rolling bin, which can prevent the plastic particles from entering the cleaning box;

[0014] A first air blowing mechanism is installed at the top of the rolling bin, an angle is set between the air path blown by the first air blowing mechanism and the screen plate, and the direction of the angle is the same as the direction of the plastic particles flowing on the screen plate;

[0015] After the first blowing mechanism is started, it assists the plastic particles to flow on the screening plate, thereby improving the quality and efficiency of screening.

[0016] A further technical improvement of the utility model is that a buffer assembly is installed inside the rolling bin on the upper side of the screening plate to reduce the sliding speed of the plastic particles along the screening plate.

[0017] The further technical improvement of the utility model is that: the buffer assembly includes a circulation frame connected to the top of the rolling bin, the circulation frame includes a driving part, a hollow belt body is installed on the outer side of the driving part, the moving path of the lower surface of the belt body is parallel to the screening plate, and a plurality of limiting plates are installed on the outer side of the belt body;

[0018] After the belt body rotates based on the driving part, each limiting plate is moved from the upper side of the screening plate in sequence to limit the moving speed of the plastic particles along the screening plate.

[0019] A further technical improvement of the utility model is that the two ends of each recycling box extend to the lower side of the two groups of cleaning boxes respectively, so that after the cleaning component cleans the corresponding parts of the screening plate, the cleaned plastic particles can be easily recycled.

[0020] A further technical improvement of the utility model is that: the cleaning assembly includes an expansion member and a second blowing mechanism, the expansion member is installed at the top of the corresponding cleaning box, the second blowing mechanism is installed on one side of the cleaning box, and the output end of the second blowing mechanism is connected to the expansion member;

[0021] After the second blowing mechanism is started, the expansion piece is inflated, and after being inflated, the expansion piece contacts the corresponding part of the screening plate and is embedded in the sieve holes of the screening plate to clean the plastic blocked in the sieve holes of the screening plate.

[0022] A further technical improvement of the utility model is that a plurality of elastic members are installed between the upper and lower sides of the expansion member, and after the second blowing mechanism stops supplying air to the expansion member, each elastic member resets the expansion member to avoid obstruction to the screening plate when the screening plate moves.

[0023] Compared with the prior art, the utility model has the following beneficial effects:

[0024] The utility model screens plastic particles through a screening plate. During screening, a buffer component is provided to reduce the flow speed of the plastic particles on the screening plate. At the same time, the first air blowing mechanism is used to increase the contact force between the plastic particles and the screening plate, thereby improving the efficiency and quality of screening.

[0025] And after screening for a period of time, the screen plate can move the used area to the cleaning box in the corresponding direction, and clean it through the cleaning components in the corresponding cleaning box to prevent plastic particles from clogging the screen holes of the screen plate. During cleaning, the rest of the screen plate is moved to the inside of the rolling bin for screening, thereby keeping the device in working condition at all times. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0027] Figure 1 It is a schematic diagram of the structure of the utility model;

[0028] Figure 2 It is a side sectional view of the utility model;

[0029] Figure 3 It is a front cross-sectional view of the utility model;

[0030] Figure 4 For this utility model Figure 3 A magnified view of the structure of part A;

[0031] In the figure: 1. screening box; 2. rolling bin; 3. storage bin; 4. screening plate; 5. cleaning box; 6. feed pipe; 7. first blowing mechanism; 8. recovery box; 9. horizontal drive mechanism; 10. cleaning assembly; 11. circulation rack; 12. limiting plate; 101. expansion member; 102. elastic member; 103. second blowing mechanism. DETAILED DESCRIPTION

[0032] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0033] See also Figure 1-4 As shown, a plastic particle grading and screening device comprises a screening box 1, a feed pipe 6 is installed on the top of the screening box 1, and an inclined rolling bin 2 is opened inside the screening box 1, a horizontal driving mechanism 9 is installed at the bottom end of the rolling bin 2, and a screening plate 4 is installed at the output end of the horizontal driving mechanism 9;

[0034] The screening plate 4 is provided with screening areas from high to low, and the apertures of the screening holes in each screening area decrease from high to low;

[0035] Cleaning boxes 5 are installed on both sides of the screening box 1, and the two sets of cleaning boxes 5 are connected to the rolling bin 2, and the insides of the two sets of cleaning boxes 5 are installed with cleaning components 10;

[0036] A storage bin 3 is provided inside the screening box 1, located at the lower side of the rolling bin 2 and the lower side of the two groups of cleaning boxes 5. A plurality of recovery bins 8 are installed inside the storage bin 3, and each recovery bin 8 corresponds to a group of screening areas.

[0037] The screening plate 4 is based on the horizontal driving mechanism 9, and moves between a group of cleaning boxes 5 and the rolling bin 2. The screening plate 4 is located in the area inside the rolling bin 2 for screening plastic particles. The screening plate 4 is located in the area corresponding to the cleaning box 5. After the cleaning box 5 is started, it is cleaned;

[0038] The two sides of the screening plate 4 are slidably connected to the connecting parts of the two groups of cleaning boxes 5 and the rolling bin 2, and the connecting parts are filled, and a part of the screening plate 4 is always kept inside the rolling bin 2;

[0039] After the plastic particles enter the rolling bin 2 along the feed pipe 6, they slide along the screening plate 4, and after the screening plate 4 fills the connecting area between the two groups of cleaning boxes 5 and the rolling bin 2, the plastic particles can be prevented from entering the cleaning box 5;

[0040] A first air blowing mechanism 7 is installed at the top of the rolling bin 2. An angle is set between the air path blown by the first air blowing mechanism 7 and the screen plate 4, and the direction of the angle is the same as the direction of the plastic particles flowing on the screen plate 4.

[0041] After the first blowing mechanism 7 is started, the plastic particles are assisted to flow on the screening plate 4, thereby improving the quality and efficiency of screening.

[0042] See also Figure 2 As shown, a buffer assembly is installed inside the rolling bin 2 on the upper side of the screening plate 4 to reduce the sliding speed of the plastic particles along the screening plate 4.

[0043] The buffer assembly includes a circulation frame 11 connected to the top of the rolling bin 2, the circulation frame 11 includes a driving part, a hollow belt body is installed on the outside of the driving part, the moving path of the lower surface of the belt body is parallel to the screening plate 4, and a plurality of limiting plates 12 are installed on the outside of the belt body;

[0044] After the belt body rotates based on the driving part, each limiting plate 12 is moved from the upper side of the screening plate 4 in sequence to limit the moving speed of the plastic particles along the screening plate 4.

[0045] Both ends of each recycling box 8 extend to the lower side of the two groups of cleaning boxes 5 respectively. After the cleaning component 10 cleans the corresponding parts of the screening plate 4, it is convenient to recycle the cleaned plastic particles.

[0046] In this embodiment, the horizontal driving mechanism 9 includes two sets of slide rods and screw drive components, the two sets of slide rods are respectively installed at the upper and lower ends of the rolling bin 2 and the two sets of cleaning boxes 5, and the two ends of the screening plate 4 are respectively slidably connected to the two sets of slide rods;

[0047] The screw drive assembly is installed inside the screening box 1, and the output end is connected to the screening plate 4. After starting, the screw drive assembly drives the screening plate 4 to slide along the two sets of sliding rods.

[0048] See also Figure 3-4 As shown, the cleaning assembly 10 includes an expansion member 101 and a second blowing mechanism 103, the expansion member 101 is installed at the top of the corresponding cleaning box 5, the second blowing mechanism 103 is installed on one side of the cleaning box 5, and the output end of the second blowing mechanism 103 is connected to the expansion member 101;

[0049] After the second blowing mechanism 103 is started, the expansion member 101 is inflated. After the expansion member 101 is inflated, it contacts the corresponding part of the screening plate 4 and is embedded in the sieve holes of the screening plate 4 to clean the plastic blocked in the sieve holes of the screening plate 4.

[0050] A plurality of elastic members 102 are installed between the upper and lower sides of the expansion member 101. After the second blowing mechanism 103 stops supplying air to the expansion member 101, each elastic member 102 resets the expansion member 101 to avoid obstruction to the screen plate 4 when the screen plate 4 moves.

[0051] When the utility model is used, the plastic particles are poured into the rolling bin 2 along the feed pipe 6, and the plastic particles slide along the screening plate 4 and are screened when passing through the corresponding screening area;

[0052] During screening, the circulation rack 11 is started, and the limiting plate 12 is moved along the screening plate 4 to limit the moving speed of the plastic particles, so as to avoid the problem of insufficient screening caused by the excessive moving speed of the plastic particles. At the same time, the first blowing mechanism 7 is started, and the plastic particles are blown through the circulation rack 11 to be scattered on the screening plate 4, and at the same time, power is applied to the plastic particles so that they can move better along the screening plate 4.

[0053] After screening for a period of time, the horizontal driving mechanism 9 is started to drive the screening plate 4 to move, and the screening plate 4 is moved to the cleaning box 5 in the corresponding direction at the used position, and in the process of the screening plate 4 moving, the separation and filling between the two groups of cleaning boxes 5 and the rolling bin 2 are maintained to prevent plastic particles from entering the cleaning box 5;

[0054] After the corresponding part of the screening plate 4 enters the cleaning box 5, the cleaning component 10 in the cleaning box 5 is started, and the second blowing mechanism 103 in the cleaning component 10 inflates the expansion piece 101. The expansion piece 101 expands after inflation and contacts the screening plate 4, pressing the plastic particles in the sieve holes of the screening plate 4 downward and dropping them into the corresponding recycling box 8.

[0055] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A plastic particle grading and screening device, characterized in that: include: A screening box (1) is provided with a rolling bin (2) and a storage bin (3) from top to bottom, and a feed pipe (6) connected to the rolling bin (2) is installed on the top of the screening box (1); A recycling box (8), wherein a plurality of the recycling boxes (8) are installed inside the storage bin (3); A horizontal driving mechanism (9) is installed inside the screening box (1); Cleaning boxes (5), two groups of cleaning boxes (5) are respectively installed on both sides of the screening box (1), and cleaning components (10) are installed inside the two groups of cleaning boxes (5); The screening plate (4) is connected to the horizontal driving mechanism (9), and the screening plate (4) moves between the rolling bin (2) and the cleaning box (5) based on the horizontal driving mechanism (9), and a part of the screening plate (4) is always kept inside the rolling bin (2); A first air blowing mechanism (7) is installed on the top of the rolling bin (2); The buffer assembly is installed on the top of the rolling bin (2).

2. A plastic particle classification and screening device according to claim 1, characterized in that: The screening plate (4) is provided with screening areas from high to low, and the aperture of the screening holes in each screening area decreases from high to low.

3. A plastic particle classification and screening device according to claim 1, characterized in that: An angle is provided between the air path blown by the first blowing mechanism (7) and the screen plate (4), and the direction of the angle is the same as the direction in which the plastic particles flow on the screen plate (4).

4. A plastic particle classification and screening device according to claim 1, characterized in that: The buffer assembly comprises a circulation frame (11) connected to the top of the rolling bin (2); The circulation frame (11) comprises a driving part, a hollow belt body is installed on the outer side of the driving part, and a plurality of limiting plates (12) are installed on the outer side of the belt body.

5. A plastic particle classification and screening device according to claim 1, characterized in that: Both ends of each recovery box (8) extend to the lower side of the two groups of cleaning boxes (5).

6. A plastic particle classification and screening device according to claim 1, characterized in that: The cleaning assembly (10) comprises an expansion member (101) and a second blowing mechanism (103), wherein the expansion member (101) is installed at the top end of the corresponding cleaning box (5), and the second blowing mechanism (103) is installed at one side of the cleaning box (5), and the output end of the second blowing mechanism (103) is connected to the expansion member (101).

7. A plastic particle classification and screening device according to claim 6, characterized in that: A plurality of elastic members (102) are installed between the upper and lower sides of the expansion member (101).

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