Sorting device for color masterbatch

Abstract

The utility model discloses a kind of sorting equipment for color master batch, including the feed inlet for receiving color master batch, at least one discharge outlet for discharging color master batch and equipment main body;Including the feed inlet for receiving color master batch, at least one discharge outlet for discharging color master batch that has been sorted and equipment main body, equipment main body includes: closed outer cover;Cleaning mechanism is arranged inside rotary sieve cylinder, and auxiliary flow guide structure is arranged.By adopting prismatic rotary sieve cylinder, color master batch is fully tumbled and thrown in the barrel, increase the effective contact number and sieve probability of particle and sieve plate surface, while inside by setting cleaning mechanism and flexible scraping strip in the interior of rotary sieve cylinder, effectively scrape sieve plate inner surface and its angle, and promptly remove the fine powder and particle adhered or blocked sieve hole, so that long-term keep sieve hole unobstructed, ensure that screening efficiency and continuous operation ability, and then realize the cleaning, efficient performance in color master batch sorting process.

Description

Technical Field

[0001] This utility model relates to the field of sorting equipment technology, and in particular to a sorting equipment for color masterbatch. Background Technology

[0002] As an important raw material for plastic coloring and functional modification, the particle size uniformity, purity, and dust-free state of color masterbatch are crucial to the stability of downstream molding processes such as injection molding, blown film, and fiber drawing, as well as the quality of the final product. Therefore, in the final stage of color masterbatch production or the pretreatment stage before use, it is usually necessary to sort it to remove excessively large particles, excessively small particles (fine powder), agglomerated particles, and any irregularly shaped particles that may be present.

[0003] In the existing technology, there are many types of sorting equipment for particulate materials such as color masterbatch, including vibrating screens, swing screens, and drum screens. However, these devices still have some problems when processing materials such as color masterbatch, which are relatively light, prone to static electricity, and have strict requirements for cross-contamination.

[0004] Fine powder or particles close to the size of the sieve hole produced by color masterbatch during the screening process can easily clog the sieve mesh, causing a sharp drop in screening efficiency and requiring frequent shutdowns for manual cleaning.

[0005] Color masterbatch itself may contain fine powder, and friction and impact during the screening process will also generate new fine powder. Fine powder can easily escape into the working environment, causing material loss, air pollution, and posing a threat to the health of operators. More importantly, when sorting different colors or grades of color masterbatch, the fine powder and particles remaining inside the equipment can easily cause cross-contamination of subsequent batches, seriously affecting product quality. Therefore, there is an urgent need for a sorting device for color masterbatch. Utility Model Content

[0006] The purpose of this invention is to address the deficiencies in the existing technology by proposing a sorting device for color masterbatch.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A sorting device for color masterbatch includes an inlet for receiving color masterbatch, at least one outlet for discharging sorted color masterbatch, and a main body of the device.

[0009] The main body of the equipment includes:

[0010] Enclosed outer cover;

[0011] A prismatic rotating screen cylinder installed inside a closed outer casing;

[0012] Drive mechanism used to drive the rotation of the rotary screen cylinder;

[0013] The cleaning mechanism is located inside the rotating screen cylinder and is used to clean the inner surface of the screen plate of the rotating screen cylinder during rotation.

[0014] The segmented collection system is located below the rotating screen cylinder;

[0015] It also includes an auxiliary flow guiding structure, which is located inside the enclosed outer casing and works in conjunction with the cleaning mechanism.

[0016] Furthermore, the rotary screen cylinder has a hexagonal prism structure, and the cylinder wall is composed of at least two screen plates with different screen aperture specifications, forming at least two screening sections distributed along its axial direction.

[0017] Furthermore, the cleaning mechanism includes at least one flexible scraper arranged axially or spirally along the rotating screen cylinder. One end of the flexible scraper is fixed by a tension adjustment device and maintains a preset tension, so that the flexible scraper can extend and retract to scrape the inner surface of the screen plate when the rotating screen cylinder rotates.

[0018] Furthermore, the flexible scraper has a triangular structure, and the included angle of the triangular structure facing the corner of the rotating screen cylinder is an arc-shaped structure with the same angle as the corner of the rotating screen cylinder.

[0019] Furthermore, the tension adjustment device includes a central rotating shaft, an adjusting rod is inserted inside the central rotating shaft, a flexible scraper is connected to the end of the adjusting rod away from the central rotating shaft, and a spring return sleeve is provided between the adjusting rod and the central rotating shaft.

[0020] Furthermore, the auxiliary flow guiding structure includes an internal flow guiding frame disposed within a closed outer casing. The internal flow guiding frame is a prismatic structure coaxial with the rotating screen cylinder and with its outer diameter proportionally expanded, and its opening facing the rotating screen cylinder is expanded.

[0021] Furthermore, a barrier screen plate is provided between the internal guide frame and the rotating screen cylinder; several air guide grooves are provided on the inner wall of the internal guide frame, and the extension direction of the air guide grooves is inclined towards the central axis of the internal guide frame; a fan is provided on one side of the internal guide frame, and the fan cooperates with the auxiliary drive mechanism to blow air towards the rotating screen cylinder through the air guide grooves.

[0022] Furthermore, the segmented collection system includes several collection hoppers, the installation positions of which correspond to the different screening sections of the rotary screen cylinder, the lower part of the screen, and the material drop area below the expansion port of the internal guide frame.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0024] By employing a prismatic rotating screen cylinder, the masterbatch is fully tumbled and scattered inside the cylinder, increasing the effective contact number between the particles and the screen plate surface and the sieving probability. At the same time, the cleaning mechanism and flexible scraper set inside the rotating screen cylinder, together with the tension adjustment device, can continuously and effectively scrape the inner surface of the screen plate and its edges during the rotation of the screen cylinder, promptly removing fine powder and particles that are attached to or block the screen holes, thereby keeping the screen holes unobstructed for a long time, ensuring screening efficiency and continuous operation capability.

[0025] In addition, the main body of the equipment adopts a closed outer cover, which seals the entire screening process inside, preventing dust from escaping into the external environment at the source. During this process, through the auxiliary flow guiding structure, in conjunction with the inclined flow guiding air grooves and fans on the inner wall of the internal flow guiding frame, the fine powder scraped down by the cleaning mechanism and the suspended dust generated during the screening process are actively removed. The synergistic effect of airflow cleaning and mechanical scraping greatly reduces the dust residue inside the equipment, providing convenience for cleaning when changing different batches and different colors of masterbatch, thereby significantly reducing the risk of cross-contamination. This achieves clear separation and independent collection of materials and dust, effectively solving the problems of easy screen clogging and serious dust pollution in existing masterbatch sorting equipment, and thus achieving clean and efficient performance in the masterbatch sorting process. Attached Figure Description

[0026] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0027] Figure 1 This is one of the overall structural schematic diagrams of the sorting equipment for masterbatch proposed in this utility model;

[0028] Figure 2 This is the second schematic diagram of the overall structure of the sorting equipment for masterbatch proposed in this utility model;

[0029] Figure 3 This is one of the cross-sectional views of the sorting equipment for masterbatch proposed in this utility model;

[0030] Figure 4 This is the second cross-sectional view of the sorting equipment for masterbatch proposed in this utility model.

[0031] In the diagram: 10. Main body of the equipment; 11. Enclosed outer cover; 20. Feed inlet; 30. Discharge outlet; 40. Rotating screen cylinder; 41. Screen plate surface; 50. Drive mechanism; 60. Cleaning mechanism; 61. Flexible scraper; 62. Tension adjustment device; 621. Central rotating shaft; 622. Adjusting rod; 623. Spring return sleeve; 70. Segmented collection system; 71. Collection hopper; 80. Auxiliary guide structure; 81. Internal guide frame; 811. Guide air groove; 82. Barrier screen plate; 83. Fan. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0033] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", 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.

[0034] Reference Figure 1-4 A sorting device for color masterbatch includes a main body 10, which has an inlet 20 for receiving color masterbatch to be sorted and at least one outlet 30 for discharging sorted color masterbatch.

[0035] The main body 10 of the equipment is equipped with a closed outer cover 11, which isolates the main screening working area from the external environment. Inside the closed outer cover 11, the screening component is a prismatic rotating screen cylinder 40, which is driven to rotate by a drive mechanism 50, such as a motor, a reducer, and a transmission belt or gear. A cleaning mechanism 60 is installed inside the rotating screen cylinder 40, which can continuously or periodically clean the inner surface of its screen plate 41 during the rotation of the rotating screen cylinder 40 to ensure that the screen holes are unobstructed. The screened material falls into the segmented collection system 70 located below the rotating screen cylinder 40 according to its particle size. In addition, in order to further optimize the material flow and dust control inside the equipment, an auxiliary flow guiding structure 80 is also installed inside the closed outer cover 11. This auxiliary flow guiding structure 80 works in conjunction with the cleaning mechanism 60 and the material screening process to improve the overall working efficiency.

[0036] The masterbatch to be sorted enters the rotating screen cylinder 40 inside the enclosed outer cover 11 through the feed port 20. The drive mechanism 50 makes the rotating screen cylinder 40 rotate, and the masterbatch rolls and moves along the screen plate surface 41 inside the cylinder. Particles that meet the screen hole size pass through the screen and fall into the segmented collection system 70 below. The cleaning mechanism 60 continuously cleans the inner wall of the screen during rotation to prevent blockage. The auxiliary guide structure 80 guides the internal airflow to help fine dust settle or be collected in a directional manner, and may work in conjunction with the cleaning mechanism 60 to guide the cleaned fine powder to the designated collection port.

[0037] In a preferred embodiment, the rotating screen cylinder 40 has a hexagonal prism structure. Compared with a cylindrical screen cylinder, the prism structure allows the masterbatch to tumble and rotate more during the rolling process inside the cylinder, increasing the contact opportunities between the particles and the screen surface and the probability of passing through the screen. At the same time, it also has a certain effect on breaking up some particles that may be slightly stuck together.

[0038] The cylinder wall of the rotary screen cylinder 40 is formed by splicing or integrally forming at least two screen plates 41 with different screen aperture specifications. The screen plates 41 with different specifications are arranged sequentially along their axial direction, thereby naturally forming at least two screening areas with different screening accuracies on the same rotary screen cylinder 40. For example, the section near the feed end can be a coarse screen section with a larger aperture, and the subsequent section is a fine screen section with a gradually decreasing aperture.

[0039] In practice, after the masterbatch enters the rotary screen cylinder 40 from the feed end, it first passes through the first screening section as the cylinder rotates. Larger particles or clumps are screened out or remain in the cylinder to continue moving towards the end, while particles that fit the screen openings of this section pass through the screen. Particles that do not pass through the screen continue to the second screening section for finer screening, thus achieving multi-stage particle size sorting of the masterbatch.

[0040] In a preferred embodiment, the cleaning mechanism 60 includes at least one flexible scraper 61. The flexible scraper 61 is arranged linearly or spirally along the axial direction of the rotating screen cylinder 40. To enable the flexible scraper 61 to effectively conform to the inner wall of the screen plate surface 41 of the rotating screen cylinder 40 and perform scraping, at least one or both ends are fixed by a specially designed tension adjustment device 62, which imparts a preset tension. Due to the elasticity of the flexible scraper 61 itself and the function of the tension adjustment device 62, the flexible scraper 61 can elastically and extensibly adapt to minor unevenness or deformation of the inner wall of the screen cylinder as the rotating screen cylinder 40 rotates, maintaining contact with and scraping the inner surface of the screen plate surface 41, thus scraping off near-sized particles or fine powder that may clog the screen holes.

[0041] Furthermore, the cross-sectional shape or overall form of the flexible scraper 61 is designed as a triangular structure. The triangular structure faces the corner of the rotating screen cylinder 40 and is an arc-shaped structure that matches the angle of the inner wall of the rotating screen cylinder 40, such as the 120-degree inner angle of a hexagonal prism. This allows the flexible scraper 61 to not only effectively clean the flat part of the screen plate 41, but also effectively clean each inner corner of the prism-shaped screen cylinder, preventing the accumulation of materials and dust in these corners.

[0042] In a preferred embodiment, the tension adjustment device 62 includes a central rotating shaft 621, which can be fixed to the end cap or internal support of the rotating screen cylinder 40. An adjusting rod 622 is inserted into the interior of the central rotating shaft 621, for example, in an axial blind hole or through hole. The end of the adjusting rod 622 away from the central rotating shaft 621 is connected to one end of the flexible scraper 61. A spring return sleeve 623 is sleeved between the adjusting rod 622 and the central rotating shaft 621. The spring return sleeve 623, for example, is a compression spring with a sleeve that acts as a guide and limiter, which can apply a force to the adjusting rod 622 to tend to tighten the flexible scraper 61, thereby maintaining the continuous tension of the flexible scraper 61. The tension of the flexible scraper 61 can be easily adjusted by adjusting the preload of the spring return sleeve 623 or the initial position of the adjusting rod 622. When the rotating screen cylinder 40 rotates, the internal flexible scraper 61 is tightly attached to the inner wall of the screen plate surface 41, including the corners, due to the tension provided by the tension adjustment device 62. As the screen cylinder rotates, the flexible scraper 61 moves relative to the screen surface, continuously scraping away the masterbatch particles and powders that are attached to or block the screen holes, ensuring that the screen holes are unobstructed. The spring return sleeve 623 ensures that the scraper can still maintain effective cleaning pressure when it is worn or encounters larger particles.

[0043] The auxiliary flow guiding structure 80 includes an internal flow guiding frame 81 disposed inside the enclosed outer casing 11. The internal flow guiding frame 81 is also prismatic in shape, and its axis is basically coincident with or parallel to the axis of the rotating screen cylinder 40, but its cross-sectional dimensions are proportionally larger than those of the rotating screen cylinder 40, forming a flow guiding space that fits outside the rotating screen cylinder 40. Its opening facing the rotating screen cylinder 40 is extended, which is beneficial for collecting fine particles thrown off the surface of the rotating screen cylinder 40 or carried out by the airflow.

[0044] A barrier screen plate 82 is provided between the internal guide frame 81 and the rotating screen cylinder 40. The aperture specification of the barrier screen plate 82 may be different from that of the screen holes of the rotating screen cylinder 40. It is a finer mesh used to prevent larger particles from accidentally entering a specific airflow area of ​​the internal guide frame 81, or to perform preliminary filtration and uniform distribution of the airflow passing through the outer surface of the rotating screen cylinder 40.

[0045] Several air guide grooves 811 are also provided on the inner wall of the internal guide frame 81. The direction of these air guide grooves 811 is inclined towards the central axis of the internal guide frame 81. On one side of the internal guide frame 81, for example near the feed end or discharge end, there is a fan 83. The fan 83 cooperates with an auxiliary drive mechanism 84. The auxiliary drive mechanism 84 is a mechanical device used to adjust the working state of the fan 83 or the intensity of the airflow it generates (for example, the fan itself is linked to the main drive mechanism through a clutch). When the fan 83 is working, the airflow generated will be guided to the surface of the rotating screen cylinder 40 or its vicinity through these inclined air guide grooves 811. The internal guide frame 81 forms a specific airflow control zone around the rotating screen cylinder 40. The airflow generated by fan 83 is directed out through air guide groove 811. This directional airflow serves two purposes: first, it helps to blow away fine powder adhering to the outer surface of the rotating screen cylinder 40 or the barrier screen plate 82; second, it creates an orderly airflow field around the rotating screen cylinder 40, effectively guiding the fine dust scraped off the inner surface of the screen by the cleaning mechanism 60, as well as the fine dust generated during the screening process, into the specific collection hopper 71 in the segmented collection system 70 for collecting fine powder, reducing dust dispersion within the enclosed outer cover 11 and deposition in non-target areas. The barrier screen plate 82 may protect the inner cavity of the internal guide frame 81 from accidental contamination by large particles, or further refine the airflow.

[0046] In a preferred embodiment, the segmented collection system 70 is used to receive and store color masterbatch that passes through different screening zones of the rotary screen cylinder 40 and fine powder collected by the auxiliary guide structure 80. The segmented collection system 70 specifically includes several independent collection hoppers 71. The installation position of the collection hoppers 71 is such that some collection hoppers 71 are precisely located below different screening zones 42, 43, etc. of the rotary screen cylinder 40, for collecting color masterbatch products of different particle size specifications that have passed through these screening zones; another part of the collection hoppers 71 are located in the material drop area below the expansion port of the internal guide frame 81, specifically for collecting fine powder or undersize material that settles or is guided here under the action of the auxiliary guide structure 80. Each collection hopper 71 is equipped with a discharge device at its lower part, such as a pull-out collection drawer or a manually controlled valve, to facilitate the removal and subsequent processing of the graded material. As the rotary screen cylinder 40 rotates and the material moves axially, masterbatches of different particle sizes pass through the screen holes when they reach the corresponding screening section and fall directly into the corresponding collection hopper 71 below. At the same time, during the entire screening and cleaning process, fine dust captured and guided by the auxiliary guide structure 80 is also introduced into the designated collection hopper 71, thereby achieving multi-stage sorting of masterbatches and effective separation and collection of fine powder.

[0047] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sorting device for color masterbatch, comprising an inlet (20) for receiving color masterbatch, at least one outlet (30) for discharging sorted color masterbatch, and a device body (10). Its features are, The main body of the equipment (10) includes: Enclosed outer cover (11); A prismatic rotating screen cylinder (40) installed inside the enclosed outer cover (11); Drive mechanism (50) for driving the rotary screen cylinder (40) to rotate; A cleaning mechanism (60) is provided inside the rotating screen cylinder (40) for cleaning the inner surface of the screen plate surface (41) of the rotating screen cylinder (40) during rotation; The segmented collection system (70) is located below the rotating screen cylinder (40); And an auxiliary flow guiding structure (80) is provided inside the closed outer cover (11) and cooperates with the cleaning mechanism (60).

2. The sorting equipment for masterbatch according to claim 1, characterized in that, The rotating screen cylinder (40) has a hexagonal prism structure. The cylinder wall of the rotating screen cylinder (40) is composed of at least two screen plates (41) with different screen hole specifications, and forms at least two screening sections distributed along its axial direction.

3. The sorting equipment for masterbatch according to claim 2, characterized in that, The cleaning mechanism (60) includes at least one flexible scraper (61) arranged axially or spirally along the rotating screen cylinder (40). One end of the flexible scraper (61) is fixed by a tension adjustment device (62) and maintains a preset tension, so that the flexible scraper (61) can extend and retract to scrape the inner surface of the screen plate (41) when the rotating screen cylinder (40) rotates.

4. The sorting equipment for masterbatch according to claim 3, characterized in that, The flexible scraper (61) has a triangular structure, and the included angle of the triangular structure is an arc-shaped structure with the same angle as the corner of the rotating screen cylinder (40).

5. The sorting equipment for masterbatch according to claim 4, characterized in that, The tension adjustment device (62) includes a central rotating shaft (621), an adjustment rod (622) is inserted inside the central rotating shaft (621), the end of the adjustment rod (622) away from the central rotating shaft (621) is connected to the flexible scraper (61), and a spring return sleeve (623) is provided between the adjustment rod (622) and the central rotating shaft (621).

6. The sorting equipment for masterbatch according to claim 5, characterized in that, The auxiliary flow guiding structure (80) includes an internal flow guiding frame (81) disposed inside the closed outer cover (11). The internal flow guiding frame (81) is a prismatic structure coaxial with the rotating screen cylinder (40) and with its outer diameter expanded proportionally, and its opening toward the rotating screen cylinder (40) is expanded.

7. The sorting equipment for masterbatch according to claim 6, characterized in that, A barrier screen plate (82) is provided between the internal guide frame (81) and the rotating screen cylinder (40); a plurality of air guide grooves (811) are provided on the inner wall of the internal guide frame (81), and the extension direction of the air guide grooves (811) is inclined toward the central axis of the internal guide frame (81); a fan (83) is provided on one side of the internal guide frame (81).

8. The sorting equipment for masterbatch according to claim 7, characterized in that, The segmented collection system (70) includes several collection hoppers (71), and the installation positions of the collection hoppers (71) correspond to the lower part of different screening sections of the rotary screen cylinder (40) and the material drop area below the expansion port of the internal guide frame (81).

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