Master batch screening device

Abstract

The utility model relates to a master batch screening device which comprises a box body, a feeding port is formed in the top of the box body, a connecting shaft is further vertically arranged in the box body, a plurality of screening assemblies are arranged on the outer wall of the connecting shaft, the outer side wall of each screening assembly is fixedly connected with the inner wall of the box body, and discharging ports are formed in the bottom and the side wall of the box body. A discharging opening located in the side wall of the box body is just located in the edge of the screening assembly, a spraying assembly is further arranged on the connecting shaft, a plurality of spraying heads of the spraying assembly are arranged and arranged on the outer side wall of the connecting shaft in a surrounding mode, and an ash hopper is further arranged below the discharging opening in the bottom of the box body; a dust extraction structure is replaced with an atomization spraying mode, a spraying structure is arranged near each stage of screening structure, dust obtained after atomization spraying can be collected into large particles, the dust particles cannot adhere to master batches again, secondary dust raising cannot be caused, and the problem of dust raising is effectively solved from the source.

Description

Technical Field

[0001] The utility model relates to the technical field of screening equipment, in particular to a masterbatch screening device. Background Art

[0002] Masterbatch is a plastic processing aid. It is composed of excess chemical additives, carrier resins and dispersants. Masterbatch is an aggregate obtained by uniformly loading an excess amount of pigments into the resin. Masterbatch refers to the granular material produced by mixing and kneading the required various additives, fillers and a small amount of carrier resin in the process of plastic processing and molding for the convenience of operation, and then through the process of metering, mixing, melting, extrusion, pelletizing and other processing equipment such as extruders.

[0003] The particle sizes of masterbatches vary after processing and molding, so they need to be graded through filters. In addition, during the production process of masterbatches, impurities such as powder are prone to appear, so a large amount of dust will be raised during the screening process, thus affecting the surrounding working environment.

[0004] Existing masterbatch screening equipment generally uses an exhaust fan to collect dust-laden air. This structure has low screening efficiency, and the collected dust is light in weight and has a slow settling rate. When workers recycle it, it is very easy to cause secondary dust due to vibration and other factors, which is very inconvenient to handle. Utility Model Content

[0005] Based on the above description, the utility model provides a masterbatch screening device to solve the shortcomings of the existing masterbatch screening equipment in which the dust removal structure is only equipped with an exhaust fan, the dust recovery efficiency is poor, and the recovered dust-laden airflow has a slow settling speed, which is very likely to cause secondary dust.

[0006] The utility model is realized through the following technical solutions:

[0007] A masterbatch screening device comprises a box body, a feed port is provided at the top of the box body, and a connecting shaft is vertically arranged inside the box body, multiple groups of screening components are provided on the outer wall of the connecting shaft, and the outer side wall of each group of the screening components is fixedly connected to the inner wall of the box body, the bottom and side walls of the box body are provided with discharge ports, and the discharge ports on the side walls of the box body are arranged just at the edge of the screening component, a spray component is also provided on the connecting shaft, and multiple nozzles of the spray component are arranged around the outer side wall of the connecting shaft, and an ash hopper is provided below the discharge port at the bottom of the box body.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, through holes are provided on the top and bottom of the box body, ball bearings are installed on the inner walls of the through holes, both ends of the connecting shaft are vertically inserted into the ball bearings, and sealing gaskets are provided on both sides of the ball bearings.

[0010] Furthermore, the screening assembly includes a mounting ring, a fixing ring, a reinforcing rib and a screen, wherein the fixing ring is sleeved on the outer wall of the connecting shaft, the outer wall of the mounting ring is fixedly connected to the inside of the box, and the mounting ring is concentric with the fixing ring and arranged at intervals up and down, the reinforcing ribs are provided with multiple ends and their two ends are respectively fixedly connected to the inner ring surface of the mounting ring and the outer ring surface of the fixing ring, and the screen is laid on the surface of the reinforcing ribs and fixedly connected to the top surface of the reinforcing ribs.

[0011] Furthermore, an annular groove is provided on both the mounting ring and the fixing ring, and the annular groove is filled with a vibration isolation block. The vibration isolation block is fixedly connected to both sides of the annular groove, and the top surface of the vibration isolation block is arranged flush with the top surface of the mounting ring or the fixing ring.

[0012] Furthermore, a vibration motor is mounted on the bottom surface of at least one of the reinforcing ribs via a motor seat.

[0013] Furthermore, the spray assembly also includes a water pump arranged on the top of the box body, the interior of the connecting shaft is hollow and an opening is provided on the top surface, the water pipe of the water pump is vertically inserted downward into the opening, and the water pipe and the interior of the opening are movably connected by a bearing.

[0014] Furthermore, a driving motor is provided on the top surface of the box body, the top end of the connecting shaft extends to the outside of the box body and a transmission gear is provided on the side wall, and a driving gear is provided on the water inlet end of the driving motor and meshes with the transmission gear.

[0015] Furthermore, a valve is provided at the connection between the discharge port and the box body.

[0016] Furthermore, the nozzles are grouped into a group of 4 and multiple groups are provided corresponding to the screening components. Each group of the nozzles is located above a group of screening components and is arranged tilted downward.

[0017] Furthermore, a flow meter is provided on the water inlet end of the water pump.

[0018] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0019] 1. This application is based on the improvement of the existing masterbatch screening equipment, and adopts the atomization spray method instead of the dust extraction structure, and is equipped with a spray structure near each level of the screening structure. Therefore, when the dust is raised, it will be quickly captured by the atomized water in the air, and the dust after the atomization spray will gather into larger particles. The dust particles will neither adhere to the masterbatch again nor cause secondary dust. They can also pass directly through the multiple layers of screen to the bottom, effectively solving the problem of dust raising from the root. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the internal structure of the box in this embodiment;

[0021] Figure 2 This is a front view of the internal structure of the box in this embodiment;

[0022] Figure 3 Schematic diagram of the structure of the screening assembly in this embodiment;

[0023] Figure 4 Schematic diagram of the structure of the mounting ring and the fixing ring in this embodiment;

[0024] Among them: 1. Box body; 11. Feed port; 12. Discharge port; 13. Valve; 2. Connecting shaft; 3. Screening assembly; 31. Mounting ring; 32. Fixing ring; 33. Reinforcement ribs; 34. Screen; 35. Vibration motor; 36. Vibration isolation block; 4. Spray assembly; 41. Spray head; 42. Water pipe; 43. Water pump; 44. Flow meter; 5. Drive motor. DETAILED DESCRIPTION

[0025] To facilitate understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings provide embodiments of the present application. However, the present application may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0027] Combine Figure 1-4 As shown, a masterbatch screening device comprises:

[0028] The box body 1 is the shell of the entire equipment. It has a feed port 11 on the top and multiple discharge ports 12 on the bottom and side walls. The discharge ports 12 on the bottom are used to collect dust and sieved particulate impurities, while the discharge ports 12 on the side walls are used to classify and recycle the masterbatch according to its particle size.

[0029] The connecting shaft 2 is rotatably mounted inside the box 1 and is used to provide auxiliary support for other components;

[0030] The screening components 3 are provided in multiple groups and fixedly connected to the inner wall of the box body 1. The multiple groups of screening components 3 are arranged at intervals up and down, and the apertures gradually decrease from top to bottom;

[0031] The spray assembly 4 is arranged on the connecting shaft 2. The number of its nozzles 41 corresponds to the number of the screening assemblies 3. The spray assembly 4 is mainly used to cooperate with the screening assembly 3 to remove dust adhering to the masterbatch.

[0032] Specifically, in this embodiment, a valve 13 should be provided on the discharge port 12 of the box body 1, and an ash hopper should also be provided below the discharge port 12 at the bottom to collect powder waste and dust after dust settling, so as to facilitate regular cleaning by the staff.

[0033] A through hole is provided at the center of the top and bottom of the box body 1, and ball bearings are provided inside the through hole, and the two ends of the connecting shaft 2 are respectively inserted and fixed inside the two ball bearings, so that the connecting shaft 2 can rotate flexibly;

[0034] In addition, the top end of the connecting shaft 2 should extend upward to the top of the box body 1, and a transmission gear should be provided on the outer wall. A drive motor 5 should be provided on one side of the top of the box body 1, and a drive gear should be provided on the water inlet end of the drive motor 5. The drive gear and the transmission gear are meshed with each other.

[0035] The screening assembly 3 consists of a mounting ring 31, a fixing ring 32, a reinforcing rib 33 and a screen 34. The mounting ring 31 is fixedly connected to the inner wall of the box body 1 by bolts, and the fixing ring 32 is sleeved on the connecting shaft 2 and arranged just above the center of the mounting ring 31. There are multiple reinforcing ribs 33, which are tilted and arranged around the mounting ring 31 and the fixing ring 32. For example, Figure 4 As shown, the inner ring surface of the mounting ring 31 is fixedly connected to the bottom end of the reinforcing rib 33, and the outer ring surface of the fixing ring 32 is fixedly connected to the top end of the reinforcing rib 33, so as to form a truncated cone structure. The screen 34 is laid on the surface of the reinforcing rib 33 and fixedly connected thereto.

[0036] During actual use, when a large amount of masterbatch pours downward, it will roll along the inclined side wall of the screen 34. Those smaller than the screen hole will fall downward, while those larger than the screen hole will accumulate on the four sides. In order to facilitate their recycling, the discharge port 12 is correspondingly set at the edge of the mounting ring 31, so that the masterbatch accumulated on the four sides can be discharged smoothly.

[0037] In actual use, the efficiency of masterbatch screening by relying solely on free fall motion is low, especially when the particle size of some masterbatch is close to the sieve hole, it is very easy to get stuck on the sieve hole and cause blockage. Therefore, a motor seat should be provided on the bottom surface of one of the reinforcing ribs 33, and a vibration motor 35 should be equipped on the motor seat to improve the screening efficiency and anti-blocking effect of the screen 34. At the same time, the vibration motor 35 cooperates with the screen 34 to effectively lift up the dust adhered to the surface of the masterbatch, making it convenient for the spray component 4 to capture and separate it.

[0038] Since vibrations can be transmitted, in order to prevent high-frequency vibrations from affecting the normal use of other components, a vibration isolation structure should also be provided to ensure the stability of the entire equipment operation. Therefore, in this embodiment, an annular groove is provided on both the mounting ring 31 and the fixing ring 32, and a vibration isolation block 36 is provided in the annular groove. The vibration isolation block 36 can be an annular silicone rubber block, and its two sides are fixedly connected to the two sides of the annular groove respectively. Therefore, when the screen 34 vibrates, its vibration isolation block 36 can effectively block the transmission of vibration and avoid resonance of other equipment.

[0039] The spray assembly 4 includes a nozzle 41 arranged on the connecting shaft 2. The nozzle 41 is an atomizing nozzle 41, which is arranged in a circle on the connecting shaft 2 in a group of 4 and tilted downward. The interior of the connecting shaft 2 is set to be hollow and interconnected with all the nozzles 41. An opening is also provided on the top end face of the connecting shaft 2. A ball bearing is provided on the inner ring surface of the opening. The external water pipe 42 is inserted straight downward into the interior of the ball bearing, and finally the water is transported to the interior of the nozzle 41 to achieve the purpose of atomizing spraying.

[0040] In the above structure, a water pump 43 should also be set on the top of the box body 1. The water pump 43 is set above the box body 1 using a bracket and is connected to the water pipe 42. At the same time, a flow meter 44 for detecting the water delivery efficiency is also provided on its water inlet end. The flow meter 44 can use a YF-S201 water flow sensor.

[0041] When the entire equipment is screening the masterbatch, a large amount of dust is raised. The raised dust will be quickly captured by the water mist layer sprayed in advance by the nozzle 41 to form larger particles of dust, and at the same time settle downward. These dust particles become larger after absorbing water, and will neither adhere to the masterbatch again nor can they directly pass through the screen 34 and fall to the bottom, thereby solving the problem caused by dust raising at the root, so that the masterbatch sorting and dust cleaning can be carried out simultaneously, greatly improving the production efficiency of the masterbatch.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the technical solutions of the embodiments of the present invention.

Claims

1. A masterbatch screening device, characterized in that: The invention comprises a box body (1), wherein a feed port (11) is provided on the top of the box body (1), and a connecting shaft (2) is vertically provided inside the box body (1), a plurality of screening components (3) are provided on the outer wall of the connecting shaft (2), and the outer wall of each group of the screening components (3) is fixedly connected to the inner wall of the box body (1), a discharge port (12) is provided on the bottom and side wall of the box body (1), and the discharge port (12) on the side wall of the box body (1) is arranged just at the edge of the screening component (3), a spray component (4) is further provided on the connecting shaft (2), a plurality of nozzles of the spray component (4) are provided and arranged around the outer wall of the connecting shaft (2), and an ash hopper is further provided below the discharge port (12) at the bottom of the box body (1).

2. A masterbatch screening device according to claim 1, characterized in that: The top and bottom of the box body (1) are provided with through holes, and ball bearings are installed on the inner walls of the through holes. The two ends of the connecting shaft (2) are respectively vertically inserted into the inside of the ball bearings, and sealing gaskets are respectively provided on both sides of the ball bearings.

3. A masterbatch screening device according to claim 1, characterized in that: The screening assembly (3) comprises a mounting ring (31), a fixing ring (32), a reinforcing rib (33) and a screen (34), wherein the fixing ring (32) is sleeved on the outer wall of the connecting shaft (2), the outer wall of the mounting ring (31) is fixedly connected to the inside of the box (1), and the mounting ring (31) and the fixing ring (32) are concentric and arranged at intervals up and down, a plurality of reinforcing ribs (33) are provided and their two ends are respectively fixedly connected to the inner ring surface of the mounting ring (31) and the outer ring surface of the fixing ring (32), and the screen (34) is laid on the surface of the reinforcing rib (33) and fixedly connected to the top surface of the reinforcing rib (33).

4. A masterbatch screening device according to claim 3, characterized in that: An annular groove is provided through both the mounting ring (31) and the fixing ring (32), and the annular groove is filled with a vibration isolation block (36). The vibration isolation block (36) is fixedly connected to both sides of the annular groove, and the top surface of the vibration isolation block (36) is arranged flush with the top surface of the mounting ring (31) or the fixing ring (32).

5. A masterbatch screening device according to claim 4, characterized in that: A vibration motor (35) is mounted on the bottom surface of at least one of the reinforcing ribs (33) via a motor seat.

6. A masterbatch screening device according to claim 1, characterized in that: The spray assembly (4) further comprises a water pump (43) arranged on the top of the box body (1); the interior of the connecting shaft (2) is hollow and has an opening on the top surface; the water delivery pipe (41) of the water pump (43) is vertically inserted downward into the interior of the opening, and the water delivery pipe (41) and the interior of the opening are movably connected by a bearing.

7. A masterbatch screening device according to claim 6, characterized in that: A driving motor (5) is also provided on the top surface of the box body (1), the top end of the connecting shaft (2) extends to the outside of the box body (1) and a transmission gear is provided on the side wall, and a driving gear is provided on the water inlet end of the driving motor (5) and meshes with the transmission gear.

8. The masterbatch screening device according to claim 1, characterized in that: A valve (13) is provided at the connection between the discharge port and the box body (1).

9. A masterbatch screening device according to claim 1, characterized in that: The nozzles form a group of four and are provided in multiple groups corresponding to the screening components (3). Each group of nozzles is located above a group of screening components (3) and is arranged tilted downward.

10. The masterbatch screening device according to claim 6, characterized in that: A flow meter (44) is also provided on the water inlet end of the water pump (43).

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