A plastic master batch screening conveyor

Abstract

The utility model discloses a kind of plastic master batch screening conveyor, including base and the rotary vibration screen being set on the upper end surface of base, the upper end surface of base is provided with support frame, the upper end of the support frame is located the rotary vibration screen upper is provided with feeding box, the upper box wall inside the feeding box is provided with the crushing mechanism for breaking up agglomerated master batch;The utility model is simple in structure, reasonable in design, by setting crushing mechanism, the accurate screening and quick crushing of agglomerated plastic master batch before entering rotary vibration screen are realized, avoid the agglomerated master batch directly into rotary vibration screen to cause screen mesh blockage, or the particle of agglomeration is misjudged to be rejected, significantly improve screening efficiency, reduce the loss rate of plastic master batch, and realize the synchronous driving of first compression roller, second compression roller, conveyor belt and cam, simultaneously utilize tensioning pulley, ensure the transmission efficiency after skid plate adjustment, and it is higher in practicality.

Description

Technical Field

[0001] This utility model relates to the field of screening equipment technology, specifically a plastic masterbatch screening and conveying device. Background Technology

[0002] Precise sieving of plastic masterbatch is a key technical step in ensuring product quality stability in modern polymer material processing. In high-end processing fields such as precision injection molding and film extrusion, the uniformity of masterbatch particle size distribution directly determines the melt rheological properties and molding stability. Particle size differences exceeding the allowable range of the process will lead to turbulence at the melt flow front, causing defects such as flow marks and reduced weld line strength in the finished product.

[0003] The shortcomings of existing technology: Currently, plastic masterbatches are mainly classified and screened using vibrating screens, which separate particles step by step through multiple layers of screens with different mesh sizes. However, this technology has significant drawbacks. Due to the strong hygroscopic nature of plastic masterbatches, prolonged storage or insufficient drying after underwater pelletizing can cause a water film to form on the particle surface, leading to adhesion and clumping. These clumps cannot pass through the vibrating screen and are difficult to break up effectively, causing screen blockage and resulting in qualified particles being mistakenly identified as oversized and rejected, reducing actual screening efficiency and increasing raw material loss. Utility Model Content

[0004] The purpose of this invention is to provide a plastic masterbatch screening and conveying device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a plastic masterbatch screening and conveying device, comprising a base and a vibrating screen disposed on the upper surface of the base, a support frame disposed on the upper surface of the base, a feeding box disposed on the upper end of the support frame above the vibrating screen, and a crushing mechanism for breaking up agglomerated masterbatch disposed on the upper wall inside the feeding box. The crushing mechanism includes: A sieve plate, one end of which is rotatably connected to the upper wall of the feeding box via a horizontal shaft, and a cam for driving the sieve plate to vibrate is also provided on the inner wall of the feeding box; A conveyor belt is horizontally arranged on the inner wall of the feeding box. The feed end of the conveyor belt is located below the discharge end of the screen plate. The feeding box is also provided with liftable sliding plates on both sides. A first pressure roller and a second pressure roller are connected between the sliding plates. The first pressure roller and the second pressure roller are located above the conveyor belt for crushing agglomerated plastic masterbatch. A drive mechanism, which is mounted on the outer wall of the feeding box, provides power output for crushing agglomerated plastic masterbatch.

[0006] Preferably, the drive mechanism includes: The motor is mounted on the wall of the feeding box and its output end is connected to the drive shaft at the feed end of the conveyor belt. A first transmission belt is disposed on the roller shafts of the first and second pressure rollers and located outside the feeding box. A second transmission belt is connected between the roller shaft of the first pressure roller and the transmission shaft at the feeding end of the conveyor belt. A third transmission belt is also disposed between the transmission shaft at the feeding end of the conveyor belt and the wheel shaft of the cam. The tensioning wheel is mounted on the wall of the feeding box and is used to tension the second transmission belt.

[0007] Preferably, the first pressure roller and the second pressure roller are inclinedly disposed on the slide plate, and the installation position of the second pressure roller is lower than that of the first pressure roller.

[0008] Preferably, the upper end of the vibrating screen is slidably connected to the lower end wall of the feeding box by opening a through groove.

[0009] Preferably, a support plate is provided between the inner walls of the feeding box and the conveyor belt.

[0010] Preferably, a guide plate is inclinedly arranged on the wall of the feeding box below the discharge end of the conveyor belt, and an air duct is arranged on the wall of the feeding box above the guide plate.

[0011] Preferably, the particle size of the sieve plate should be greater than the maximum particle size of the vibrating screen.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This plastic masterbatch screening and conveying device, by being equipped with a crushing mechanism, achieves precise screening and rapid crushing of agglomerated plastic masterbatch before it enters the vibrating screen. This avoids agglomerated masterbatch from directly entering the vibrating screen and causing screen blockage, or agglomerated particles being misjudged and rejected. It significantly improves screening efficiency and reduces the loss rate of plastic masterbatch. This plastic masterbatch screening and conveying device, through the setting of a drive mechanism, realizes the synchronous drive of the first pressure roller, the second pressure roller, the conveyor belt and the cam. At the same time, the use of a tensioning wheel ensures the transmission efficiency after the slide plate is adjusted, and it has high practicality. Attached Figure Description

[0013] Figure 1 This is the overall front view of the present invention; Figure 2 This is a top view of the entire utility model; Figure 3 This is a schematic diagram of the internal structure of this utility model.

[0014] In the diagram: 1. Base; 2. Vibrating screen; 3. Support frame; 4. Feed box; 5. Crushing mechanism; 501. Screen plate; 502. Cam; 503. Conveyor belt; 5031. Support plate; 504. Slide plate; 505. First pressure roller; 506. Second pressure roller; 6. Drive mechanism; 601. Motor; 602. First transmission belt; 603. Second transmission belt; 604. Third transmission belt; 605. Tensioner; 7. Guide plate; 8. Air duct. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", 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 component 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.

[0017] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integrated connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "several" means two or more, unless otherwise explicitly specified. Example

[0019] Please see Figure 1-3As shown, the present invention provides a technical solution for a plastic masterbatch screening and conveying device: a plastic masterbatch screening and conveying device includes a base 1 and a vibrating screen 2 installed on the upper surface of the base 1. A support frame 3 is fixedly installed on the upper surface of the base 1. A feeding box 4 is installed on the upper end of the support frame 3 above the vibrating screen 2. A crushing mechanism 5 for breaking up agglomerated masterbatch is provided on the upper wall inside the feeding box 4.

[0020] The crushing mechanism 5 includes a screen plate 501, a conveyor belt 503, and a drive mechanism 6. One end of the screen plate 501 is rotatably connected to the upper wall of the feeding box 4 via a horizontal shaft. The screening particle size of the screen plate 501 should be larger than the maximum screening particle size of the vibrating screen 2. A cam 502 for driving the screen plate 501 to vibrate is also installed on the inner wall of the feeding box 4. During the rotation of the cam 502, it rotates and hits the high point of the screen plate 501 to generate vibration. The feed inlet of the feeding box 4 is located above the high point of the screen plate 501. After the plastic masterbatch is fed onto the screen plate 501, because the screening particle size of the screen plate 501 is large, the unagglomerated particles fall into the vibrating screen 2 during the vibrating screening process. The agglomerated masterbatch cannot be screened down due to its large diameter and moves downward during the vibration of the screen plate 501.

[0021] A conveyor belt 503 is horizontally installed on the inner wall of the feeding box 4. The feed end of the conveyor belt 503 is located below the discharge end of the screen plate 501 for conveying agglomerated plastic masterbatch forward. Liftable sliding plates 504 are also installed on both sides of the feeding box 4. A first pressure roller 505 and a second pressure roller 506 are connected between the sliding plates 504. The first pressure roller 505 and the second pressure roller 506 are located above the conveyor belt 503 for crushing the agglomerated plastic masterbatch. The first pressure roller 505 and the second pressure roller 506 are installed at an angle on the sliding plate 504, with the height of the first pressure roller 505 higher than that of the second pressure roller 506 for pre-crushing the agglomerated plastic masterbatch. The height of the sliding plate 504 determines the distance between the first pressure roller 505 and the second pressure roller 506 and the conveyor belt 503. The gap between the second pressure roller 506 and the conveyor belt 503 should match the largest particle size of the plastic masterbatch. After the clumps of plastic masterbatch fall onto the conveyor belt 503, they are initially crushed and broken up by the first pressure roller 505, and then continue to move forward and are completely broken up by the second pressure roller 506. The drive mechanism 6 is installed on the outer wall of the feeding box 4 to provide power output for crushing the clumps of plastic masterbatch.

[0022] The crushing mechanism 5 enables precise screening and rapid crushing of agglomerated plastic masterbatch before it enters the vibrating screen 2, preventing agglomerated masterbatch from directly entering the vibrating screen 2 and causing screen blockage, or agglomerated particles from being misjudged and rejected, thus significantly improving screening efficiency and reducing the loss rate of plastic masterbatch.

[0023] The drive mechanism 6 includes a motor 601, a first transmission belt 602, and a tensioning pulley 605. The motor 601 is mounted on the wall of the feeding box 4, and its output end is connected to the drive shaft at the feed end of the conveyor belt 503. The first transmission belt 602 is connected to the rollers of the first pressure roller 505 and the second pressure roller 506, located outside the feeding box 4. A second transmission belt 603 connects the roller shaft of the first pressure roller 505 to the drive shaft at the feed end of the conveyor belt 503. A third transmission belt 604 also connects the drive shaft at the feed end of the conveyor belt 503 to the wheel axle of the cam 502. The tensioning pulley 605 is mounted on the wall of the feeding box 4 to tension the second transmission belt 603. When the height of the slide plate 504 is adjusted, the tensioning pulley 605 needs to synchronously adjust the tension of the second transmission belt 603 to ensure transmission efficiency.

[0024] When the crushing mechanism 5 needs to be driven, the motor 601 is started. The motor 601 drives the transmission shaft at the feed end of the conveyor belt 503 to start rotating, which in turn drives the second transmission belt 603, the third transmission belt 604 and the first transmission belt 602 to run. At this time, the first pressure roller 505, the second pressure roller 506, the conveyor belt 503 and the cam 502 start to rotate.

[0025] The drive mechanism 6 enables synchronous driving of the first pressure roller 505, the second pressure roller 506, the conveyor belt 503, and the cam 502. At the same time, the tension wheel 605 ensures the transmission efficiency after the slide plate 504 is adjusted, making it highly practical.

[0026] The upper end of the rotary vibrating screen 2 is slidably connected to the lower end of the feeding box 4 with a certain gap through a through groove, so the vibration screening of the rotary vibrating screen 2 will not affect the feeding box 4.

[0027] A support plate 5031 is installed between the inner walls of the feeding box 4 and the conveyor belt 503. The support plate 5031 can ensure the pressure between the upper surface of the conveyor belt 503 and the first pressure roller 505 and the second pressure roller 506, and prevent deformation.

[0028] A guide plate 7 is installed at an angle on the wall of the feeding box 4 below the discharge end of the conveyor belt 503. An air duct 8 is installed on the wall of the feeding box 4 above the guide plate 7. After the crushed plastic masterbatch falls onto the guide plate 7, it rolls down and is further dried by the airflow of the air duct 8.

[0029] The working principle of this utility model is as follows: When the plastic masterbatch needs to be screened, the motor 601 is started first. The motor 601 drives the first pressure roller 505, the second pressure roller 506, the conveyor belt 503, and the cam 502 to start rotating. The screen plate 501 vibrates under the drive of the cam 502. After the plastic masterbatch is fed into the feed inlet of the feeding box 4, it falls onto the screen plate 501. Unclustered particles fall into the rotary vibrating screen 2 during the vibrating screening process. The clumped masterbatch cannot be screened due to its large diameter and moves downward onto the conveyor belt 503 during the vibration of the screen plate 501. As the conveyor belt 503 drives the plastic masterbatch to move horizontally, the plastic masterbatch is first initially crushed and dispersed by the first pressure roller 505, and then completely dispersed by the second pressure roller 506 before falling onto the guide plate 7 and rolling downward. It is further dried by the airflow of the air duct 8.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A plastic masterbatch screening and conveying device, comprising a base (1) and a vibrating screen (2) disposed on the upper surface of the base (1), characterized in that: A support frame (3) is provided on the upper surface of the base (1). A feeding box (4) is provided on the upper end of the support frame (3) above the vibrating screen (2). A crushing mechanism (5) for breaking up agglomerated masterbatch is provided on the upper wall inside the feeding box (4). The crushing mechanism (5) includes: A sieve plate (501) is provided. One end of the sieve plate (501) is rotatably connected to the upper wall of the feeding box (4) via a horizontal shaft. A cam (502) for driving the sieve plate (501) to vibrate is also provided on the inner wall of the feeding box (4). A conveyor belt (503) is horizontally arranged on the inner wall of the feeding box (4). The feeding end of the conveyor belt (503) is located below the discharge end of the screen plate (501). The feeding box (4) is also provided with liftable sliding plates (504) on both sides. A first pressure roller (505) and a second pressure roller (506) are connected between the sliding plates (504). The first pressure roller (505) and the second pressure roller (506) are located above the conveyor belt (503) for crushing agglomerated plastic masterbatch. The drive mechanism (6) is located on the outer wall of the feeding box (4) to provide power output for crushing the agglomerated plastic masterbatch.

2. The plastic masterbatch screening and conveying device according to claim 1, characterized in that: The drive mechanism (6) includes: The motor (601) is mounted on the wall of the feeding box (4) and its output end is connected to the drive shaft at the feed end of the conveyor belt (503). A first transmission belt (602) is disposed on the roller shafts of the first pressure roller (505) and the second pressure roller (506) and located outside the feeding box (4). A second transmission belt (603) is connected between the roller shaft of the first pressure roller (505) and the transmission shaft at the feeding end of the conveyor belt (503). A third transmission belt (604) is also disposed between the transmission shaft at the feeding end of the conveyor belt (503) and the wheel shaft of the cam (502). Tensioner (605), which is disposed on the wall of the feeding box (4) for tensioning the second transmission belt (603).

3. The plastic masterbatch screening and conveying device according to claim 2, characterized in that: The first pressure roller (505) and the second pressure roller (506) are inclinedly disposed on the slide plate (504), and the installation position of the second pressure roller (506) is lower than that of the first pressure roller (505).

4. The plastic masterbatch screening and conveying device according to claim 1, characterized in that: The upper end of the vibrating screen (2) is slidably connected to the lower end wall of the feeding box (4) by opening a through groove.

5. The plastic masterbatch screening and conveying device according to claim 1, characterized in that: A support plate (5031) is provided between the inner walls of the feeding box (4) and the conveyor belt (503).

6. The plastic masterbatch screening and conveying device according to claim 1, characterized in that: A guide plate (7) is inclinedly arranged on the wall of the feeding box (4) below the discharge end of the conveyor belt (503), and an air duct (8) is arranged on the wall of the feeding box (4) above the guide plate (7).

7. The plastic masterbatch screening and conveying device according to claim 1, characterized in that: The sieve plate (501) should have a sieve particle size greater than the maximum sieve particle size of the vibrating screen (2).

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