Multi-stage screening device for modified plastic particles

Abstract

The utility model belongs to the technical field of modified plastic particles, and provides a modified plastic particle multi-stage screening device which comprises a screening box, a stirring structure is arranged in the screening box, and a screening structure is arranged at the top of the stirring structure. The stirring structure comprises a driving shaft rotationally arranged in the screening box, the exterior of the driving shaft is sleeved with a plurality of connecting sleeves at equal intervals, two sliding blocks are symmetrically arranged in each connecting sleeve, the sliding blocks are slidably arranged in sliding grooves correspondingly formed in the exterior of the driving shaft, and screen plates are arranged on the peripheral sides of the connecting sleeves; the screening structure comprises movable shifting blocks arranged at the bottom ends of the multiple screen plates, supporting rings are arranged in the screening box and located at the bottom ends of the multiple screen plates, and a plurality of fixed shifting blocks are arranged at the tops of the multiple supporting rings at equal intervals. The problem that modified plastic particles are accumulated at the two ends of a screen plate due to the fact that an existing device controls the screen plate to slide back and forth through an air cylinder to conduct screening motion and is single in screening motion track is solved.

Description

Technical Field

[0001] This utility model relates to the field of modified plastic granules, and in particular to a multi-stage screening device for modified plastic granules. Background Technology

[0002] Modified plastics refer to plastic products that have been modified from general-purpose plastics and engineering plastics through methods such as filling, blending, and reinforcement, thereby improving their properties such as flame retardancy, strength, impact resistance, and toughness. Multi-stage screening of plastic particles is an essential step in their processing.

[0003] A search of patent publication number CN116371732A reveals a multi-stage screening device for modified plastic granules. The device includes a housing with a feed inlet at the top. Multiple screening sections are arranged sequentially from top to bottom within the housing. Each screening section includes an inclined upper screen plate and a lower screen plate slidably connected to the upper screen plate. The upper screen plate has multiple upper screen holes evenly distributed, and the lower screen plate has multiple lower screen holes evenly distributed. Multiple anti-clogging units are arranged on the lower screen plate corresponding to the lower screen holes. Each anti-clogging unit includes a rectangular platform along the length of the lower screen plate, a sliding plate within the rectangular platform, and an impact rod rotatably connected to the lower screen plate. When the sliding plate slides away from the lower screen holes, it pushes the impact rod to rotate, causing the lower end of the impact rod to extend into the screening channel. A cylinder is fixedly connected to the side wall of the housing, and the cylinder's output shaft is arranged along the length of the upper screen plate.

[0004] Existing equipment uses cylinders to control the screen plate to slide back and forth for screening. However, the screening trajectory is simple, which causes modified plastic particles to accumulate at both ends of the screen plate.

[0005] Therefore, it is necessary to provide a multi-stage screening device for modified plastic particles to solve the above-mentioned technical problems. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a multi-stage screening device for modified plastic particles.

[0007] This utility model provides a multi-stage screening device for modified plastic particles, including a screening box, the inside of which is provided with a stirring structure, and the top of the stirring structure is provided with a screening mechanism.

[0008] The stirring structure includes a drive shaft rotatably disposed inside the screening box, and a plurality of connecting sleeves are equidistantly sleeved on the outside of the drive shaft, and a screen plate is provided on the periphery of each of the plurality of connecting sleeves.

[0009] The screening structure includes movable levers disposed at the bottom of several screen plates. Support rings are disposed inside the screening box and at the bottom of several screen plates. Several fixed levers are disposed at equal intervals on the top of several support rings.

[0010] In order to achieve the effect of power connection of the screen plate and the driving shaft, the utility model provides a modified plastic particle multistage screening device, preferably, the inside of a plurality of connecting sleeves is provided with two sliding blocks, and the plurality of sliding blocks are slidingly arranged in the sliding grooves correspondingly arranged on the outside of the driving shaft.

[0011] In order to achieve the effect of controlling the reset of the screen plate, the utility model provides a modified plastic particle multistage screening device, preferably, the top of a plurality of connecting sleeves is provided with a reset spring, and the top of two reset springs in the same horizontal direction of a plurality of reset springs is provided with the same mounting frame, and a plurality of mounting frames are fixedly arranged on the driving shaft.

[0012] In order to achieve the effect of motor output power, the utility model provides a modified plastic particle multistage screening device, preferably, the top of the driving shaft extends through the screening box, and a motor is inserted into the screening box, and the motor is fixedly arranged on the screening box.

[0013] In order to achieve the effect of feeding behavior, the utility model provides a modified plastic particle multistage screening device, preferably, the top of the screening box is provided with a feeding port.

[0014] In order to achieve the effect of grading and discharging, the utility model provides a modified plastic particle multistage screening device, preferably, the top of the screening box is provided with a grading and discharging port, and the bottom end of the screening box is provided with a finished product discharging port.

[0015] Compared with the prior art, the utility model has the beneficial effects that:

[0016] The modified plastic particle multistage screening device is provided with a stirring structure for rotating and distributing the modified plastic particles, solves the problem that the existing equipment controls the reciprocating sliding of the screen plate through the cylinder to carry out the screening activity, but the screening motion track is single, and the modified plastic particles are accumulated at both ends of the screen plate.

[0017] The modified plastic particle multistage screening device is provided with a screening structure for controlling the up-down reciprocating displacement of a plurality of screen plates, so that the modified plastic particles are screened layer by layer, and the problem that the screened finished product particles are of different sizes is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A preferred embodiment of the modified plastic particle multistage screening device is shown in the structure schematic view.

[0019] Figure 2 For Figure 1 The structure schematic view of the A-A section shown in the structure schematic view.

[0020] Figure 3 For Figure 2 the structural diagram of the stirring structure shown in FIG.

[0021] Figure 4 For Figure 2 the structural diagram of the screening structure shown in FIG.

[0022] The figure mark: 1, screening box; 2, stirring structure; 201, drive shaft; 202, sliding groove; 203, sliding block; 204, connecting sleeve; 205, screen plate; 3, screening structure; 301, moving block; 302, fixed block; 303, support ring; 304, reset spring; 305, mounting frame; 4, motor; 5, feed inlet; 6, grading discharge port; 7, finished product discharge port. DETAILED DESCRIPTION

[0023] The utility model will be further described below in combination with the drawings and embodiments.

[0024] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , among them, Figure 1 the structural diagram of a preferred embodiment of a modified plastic particle multi-stage screening device provided by the utility model; Figure 2 the structural diagram of A-A section shown in FIG. Figure 1 the structural diagram of the stirring structure shown in FIG. Figure 3 the structural diagram of the screening structure shown in FIG. Figure 2 the structural diagram of the stirring structure shown in FIG. Figure 4 the structural diagram of the screening structure shown in FIG. Figure 2 a modified plastic particle multi-stage screening device, comprising a screening box 1, the inside of the screening box 1 is provided with a stirring structure 2, the top of the stirring structure 2 is provided with a screening structure 3;

[0025] In the specific implementation process, referring to Figure 2 and Figure 3 shown, the stirring structure 2 comprises a drive shaft 201 rotatably arranged in the inside of the screening box 1, a plurality of connecting sleeves 204 are equidistantly sleeved outside the drive shaft 201, two sliding blocks 203 are symmetrically arranged in the inside of each connecting sleeve 204, the plurality of sliding blocks 203 are slidingly arranged in the sliding grooves 202 correspondingly formed outside the drive shaft 201, the screen plates 205 are arranged on the circumferential side of each connecting sleeve 204, the top of the drive shaft 201 extends through the screening box 1 and is inserted with a motor 4, and the motor 4 is fixedly arranged in the screening box 1.

[0026] It should be noted that: the screening box 1 stably fixes the motor 4, so that the motor 4 stably outputs power to control the synchronous rotation of the driving shaft 201, the driving shaft 201 rotates with the plurality of connecting sleeves 204, and the plurality of sliding blocks 203 are limited with the plurality of sliding grooves 202, so that the plurality of screen plates 205 rotate uniformly to share the modified plastic particles, the plurality of screen plates 205 are three, a plurality of through holes with a diameter of 5-10mm are uniformly arranged in the inside of the top screen plate 205, a plurality of through holes with a diameter of 2-5mm are uniformly arranged in the inside of the middle screen plate 205, and a plurality of through holes with a diameter of 1-2mm are uniformly arranged in the inside of the bottom screen plate 205.

[0027] In the specific implementation process, referring to Figure 2 and Figure 4 It is shown that the screening structure 3 comprises a moving dial block 301 arranged at the bottom end of the plurality of screen plates 205, the inside of the screening box 1 and located at the bottom end of the plurality of screen plates 205 are provided with support rings 303, the top of the plurality of support rings 303 is provided with a plurality of fixed dial blocks 302 at equal intervals, the top of the plurality of connecting sleeves 204 is symmetrically provided with a plurality of return springs 304, the top of the same horizontal two return springs 304 in the plurality of return springs 304 is provided with the same mounting frame 305, and the plurality of mounting frames 305 are fixedly arranged on the driving shaft 201.

[0028] It should be noted that: when the plurality of screen plates 205 rotate, the moving dial block 301 at the bottom end of the plurality of screen plates 205 reciprocates through the plurality of fixed dial blocks 302, cooperates with the corresponding return spring 304, realizes the up-down displacement screening behavior of the plurality of screen plates 205, in addition, the plurality of sliding blocks 203 and the plurality of sliding grooves 202 are matched with each other, so that the plurality of screen plates 205 do not appear to be misaligned during rotation, the plurality of mounting frames 305 and the corresponding connecting sleeves 204 are provided with cloth covers, so as to avoid the modified plastic particles from blocking the corresponding sliding grooves 202, and improve the up-down sliding behavior.

[0029] In the specific implementation process, referring to Figure 1 It is shown that the top side of the screening box 1 is provided with a feeding port 5, the top side of the screening box 1 and located at the top of the plurality of screen plates 205 is provided with a plurality of grading discharge ports 6, and the bottom end of the one side of the screening box 1 is provided with a finished product discharge port 7.

[0030] It should be noted that: the feeding behavior is added through the feeding port 5, and the modified plastic particles with different particle sizes are discharged through the plurality of grading discharge ports 6 and the finished product discharge port 7.

[0031] The working principle of the modified plastic particle multi-stage screening device is as follows:

[0032] In use, the modified plastic particles are put in through the feeding port 5, the motor 4 is stably fixed by the screening box 1, so that the motor 4 stably outputs power to control the synchronous rotation of the driving shaft 201, the driving shaft 201 rotates with the plurality of connecting sleeves 204, and the plurality of sliding blocks 203 are limited by the plurality of sliding grooves 202, so as to achieve the purpose that the plurality of screen plates 205 rotate uniformly to share the modified plastic particles, when the plurality of screen plates 205 rotate, the moving push block 301 at the bottom of the plurality of screen plates 205 reciprocates through the plurality of fixed push blocks 302, cooperates with the corresponding reset springs 304, realizes the up-down displacement screening behavior of the plurality of screen plates 205, in addition, the plurality of sliding blocks 203 and the plurality of sliding grooves 202 are slidably connected, so as to avoid the dislocation of the plurality of screen plates 205 during rotation, and the modified plastic particles with different particle sizes fall onto the corresponding screen plates 205, and then the modified plastic particles with different particle sizes are discharged through the plurality of grading discharge ports 6 and the finished product discharge port 7.

[0033] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation obtained by using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. A multi-stage screening device for modified plastic granules, characterized in that, Includes a screening box (1), the screening box (1) is provided with a stirring structure (2) inside, and a sieving structure (3) is provided on the top of the stirring structure (2); The stirring structure (2) includes a drive shaft (201) rotatably disposed inside the screening box (1), and a plurality of connecting sleeves (204) are equidistantly sleeved on the outside of the drive shaft (201), and a screen plate (205) is provided on the periphery of each of the plurality of connecting sleeves (204). The sieving structure (3) includes movable levers (301) disposed at the bottom of several screen plates (205). Support rings (303) are disposed inside the screening box (1) and at the bottom of several screen plates (205). Several fixed levers (302) are disposed at equal intervals on the top of several support rings (303).

2. The multi-stage screening device for modified plastic particles according to claim 1, characterized in that, Each of the connecting sleeves (204) has two sliders (203) symmetrically arranged inside, and each of the sliders (203) is slidably arranged in a corresponding groove (202) on the outside of the drive shaft (201).

3. The modified plastic granule multi-stage screening device according to claim 1, characterized in that, Each of the connecting sleeves (204) is symmetrically provided with a return spring (304) at its top. The top of two return springs (304) at the same level is provided with the same mounting bracket (305). The mounting brackets (305) are fixedly provided on the drive shaft (201).

4. The modified plastic granule multi-stage screening device according to claim 1, characterized in that, The top of the drive shaft (201) extends through the screening box (1) and is connected to a motor (4), which is fixedly installed in the screening box (1).

5. The multi-stage screening device for modified plastic particles according to claim 1, characterized in that, The top side of the screening box (1) is provided with a feed inlet (5).

6. The modified plastic granule multi-stage screening device according to claim 1, characterized in that, A grading discharge port (6) is provided on one side of the screening box (1) and at the top of several screen plates (205), and a finished product discharge port (7) is provided at the bottom of one side of the screening box (1).

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