Drying device for producing pulverization type defoaming master batch

Abstract

The utility model discloses a drying device for pulverization type defoaming master batch production, and mainly relates to the field of color master batch production. Comprising a fixed table arranged below a defoaming master batch brace, a drying fan arranged in the fixed table, an air outlet pipeline arranged on the fixed table, and a backflow cover arranged above the air outlet pipeline of the fixed table, the backflow cover is provided with a backflow part and a receding opening, and when air flow generated by the drying fan is discharged through the air outlet pipeline and passes through the backflow part, the backflow part changes the direction of the air flow so that the air flow can flow back downwards and act on the defoaming master batch brace. The drying device has the advantages that the drying device is used for drying pulverization type defoaming master batch braces subjected to water cooling in the production of pulverization type defoaming master batches, the defoaming master batch braces can be better dried, the defoaming master batch braces in a production line can be dried more comprehensively, and the situation that drying is not uniform due to the single wind direction is avoided.

Description

Technical Field

[0001] The utility model relates to the field of masterbatch production, in particular to a drying device for producing pulverized defoaming masterbatch. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] Powdered defoaming masterbatch is an additive used to eliminate bubbles inside plastic products. It usually has various forms such as powder or granules. During the processing of plastic products, the powdered defoaming masterbatch will quickly decompose at high temperatures, releasing defoaming gas, thereby weakening the bubbles in the plastic. At the same time, the additives in the masterbatch can fill the gaps in the plastic, further enhance the performance of the plastic, and ensure the quality of the product. When using it, it is necessary to select the appropriate powdered defoaming masterbatch according to the specific processing technology and product requirements, and strictly control parameters such as the addition amount and processing temperature to ensure the quality of the product.

[0004] After the raw materials of the powdered defoaming masterbatch are evenly mixed according to the ratio, the raw materials are extruded from the extruder head through a screw extruder, and then enter the cooling pool to cool the strip-shaped powdered defoaming masterbatch. After cooling, it is sliced ​​and granulated by a granulator. However, when the powdered defoaming masterbatch strips enter the cooling pool for cooling, more moisture will adhere to the surface. When moisture adheres to the surface of the powdered defoaming masterbatch, the following effects will occur: reduce the defoaming effect, affect the dispersibility, increase impurities and reduce the storage stability. Therefore, in order to ensure the best performance of the powdered defoaming masterbatch and the quality of the product, it is necessary to ensure that the surface of the masterbatch is dry before use to avoid moisture adhesion.

[0005] When drying masterbatches, most of the drying fans are used to blow the masterbatch strips in the production line. No matter which direction the dry fan blows the masterbatch strips, the masterbatch strips facing the dry fan are easily dried by the wind, but the masterbatch strips facing the leeward direction will easily retain moisture. Another situation is that the dry fan blows upward from the masterbatch strips. In this case, the water droplets on the masterbatch strips will gather under the masterbatch strips due to gravity. Under the influence of wind and liquid surface tension, the water droplets on the masterbatch strips will gather above the masterbatch strips. In both cases, it is necessary to add a dryer to the production line to dry the masterbatch for the second time. A new drying device is needed to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a drying device for the production of powdered defoaming masterbatch, which dries the powdered defoaming masterbatch strips after water cooling during the production of the powdered defoaming masterbatch, can better dry the defoaming masterbatch strips, and can dry the defoaming masterbatch strips in the production line more comprehensively, avoiding uneven drying due to a single wind direction.

[0007] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0008] A drying device for producing powdered defoaming masterbatch comprises a fixed platform arranged below the defoaming masterbatch strip, a drying fan arranged inside the fixed platform, an air outlet duct arranged on the fixed platform, and a return hood arranged above the air outlet duct of the fixed platform; the return hood is provided with a return portion, and the return hood is provided with a yielding port. When the airflow generated by the drying fan is discharged from the air outlet duct and passes through the return portion, the return portion changes the direction of the airflow so that the airflow returns downward and acts on the defoaming masterbatch strip.

[0009] The air outlet duct is provided with a diffusion section, the top of the return hood is provided with two arc sections, and a diversion section is provided at the connection of the two arc sections, and the diversion sections are also arc-shaped.

[0010] Connecting sections are provided at the connection points between the two ends of the diversion section and the two arc sections.

[0011] The clearance opening is arranged on the circumference of the backflow cover, and the masterbatch pulling strip passes through the clearance opening into the interior of the backflow cover.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The device is used to dry the powdered defoaming masterbatch strips after water cooling in the production of powdered defoaming masterbatch. It can better dry the defoaming masterbatch strips and dry the defoaming masterbatch strips in the production line more comprehensively, avoiding uneven drying due to a single wind direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Attached Figure 1 It is an overall view of the utility model device.

[0015] Attached Figure 2 It is an overall view of the utility model device.

[0016] Attached Figure 3 It is an internal cross-sectional view of the return hood in the utility model.

[0017] Numbers shown in the accompanying drawings:

[0018] 1. Fixed platform; 2. Air outlet duct; 3. Return hood; 4. Make way port; 5. Diffusion section; 6. Arc section; 7. Diversion section; 8. Connection section. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the present application.

[0020] The utility model is a drying device for the production of powdered defoaming masterbatch. For the overall powdered defoaming masterbatch production line of the device, the raw materials are extruded by a screw extruder and then enter the cooling pool to cool the strip-shaped powdered defoaming masterbatch. Since the water-containing powdered defoaming masterbatch strip will affect its properties, a drying device should be provided, as shown in the attached figure of the specification. Figure 1 As shown, the main structure includes a fixed platform 1 arranged below the defoaming masterbatch strip, a drying fan arranged inside the fixed platform 1, an air outlet duct 2 arranged on the fixed platform 1, and a return hood 3 arranged above the air outlet duct 2 of the fixed platform 1;

[0021] The drying fan is connected to the air outlet duct 2 on the fixed platform 1, and the wind generated by the drying fan enters the reflow hood 3 from the air outlet duct 2, and is blown toward the powdered defoaming masterbatch strips from the reflow hood 3. In order to solve the problem mentioned in the background technology, the reflow hood 3 is provided with a reflow portion, and the reflow hood 3 is provided with a yield port 4. The yield port 4 yields for the penetration of the powdered defoaming masterbatch strips, so that the masterbatch strips penetrate into the reflow hood 3 from the yield port 4. When the wind generated by the drying fan is discharged from the air outlet duct 2 and passes through the reflow portion, the reflow portion changes the direction of the airflow so that the airflow flows back downward and acts on the defoaming masterbatch strips, and the surface of the powdered defoaming masterbatch strips that cannot be blown is dried.

[0022] As for the reflux part, it is actually an improvement on the shape of the reflux cover 3, as shown in the accompanying drawing of the specification. Figure 3 As shown, the air outlet duct 2 is provided with a diffusion section 5, and the diameter of the diffusion section 5 is larger than the diameter of the air outlet duct 2, so that when the airflow from the air outlet duct 2 flows through the diffusion section 5, due to the change in the pipe diameter, the original airflow changes from a state of small pipe diameter, fast flow rate and concentrated airflow to dispersion, corresponding to the shape of the diffusion section 5. At the same time, the gas flow speed is slowed down. In order to make the gas reflux, two arc sections 6 are provided on the top of the reflux cover 3, and a diversion section 7 is provided at the connection of the two arc sections 6. The diversion section 7 is also arc-shaped.

[0023] After the gas flows out of the diffuser section 5, it is divided into the following two parts. The airflow dispersed along the two sides of the diffuser section 5 enters the backflow cover 3. After the airflow blows toward the masterbatch strip, it gradually rises and enters the arc section 6. It flows along the direction of the arc section 6. When it flows through the arc position end of the arc section 6 (the connection with the diffuser section 5), the airflow changes its flow direction, so that the gas flows back to the bottom of the backflow cover 3. At the same time, after the airflow directly flowing out of the diffuser section 5 enters the backflow cover 3, it blows toward the masterbatch strip and contacts the diversion section 7, and enters the diversion section 7, and diverts along the two sides of the arc shape of the diversion section 7. Because there is an intersection between the two ends of the diversion section 7 and the end of the diffuser section 5, after the diversion section 7 diverts the airflow, the diverted airflow can converge with the airflow returning from the arc section 6. For the airflow at the intersection of the diverter section 7 and the arc section 6, it will be opposite to the flow direction of the return airflow. In order to reduce the kinetic energy loss between the two airflows in different directions, connecting sections 8 are provided at the connection between the two ends of the diverter section 7 and the two arc sections 6. The cross-section of the connecting section 8 is a straight line. After the airflow hits the connecting section 8, it is diverted along both sides of the connecting section 8 or downward, so that the return airflow can better flow downward and act on the masterbatch strips, so that the leeward side of the masterbatch strips can be air-dried.

[0024] For the drying fan, no matter whether the masterbatch strips are dried by cold air or hot air, water will evaporate in the reflow hood 3, making the humidity inside the reflow hood 3 higher, and the gas inside the reflow hood 3 needs to be discharged. Since the reflow part and the diversion section 7 at the top of the reflow hood 3 are used to guide the airflow generated by the drying fan to reflux, the air outlet duct 2 cannot be set on the top of the reflow hood 3. As mentioned above, the reflow hood 3 is provided with a clearance port 4, and the gas inside the reflow hood 3 can be discharged from the clearance port 4. In order to speed up the discharge of the gas inside the reflow hood 3, the clearance port 4 is set on the circumference of the reflow hood 3.

[0025] In summary, this device is used to dry the powdered defoaming masterbatch strips after water cooling in the production of powdered defoaming masterbatch, which can better dry the defoaming masterbatch strips and dry the defoaming masterbatch strips in the production line more comprehensively, avoiding uneven drying due to a single wind direction.

Claims

1. A drying device for producing powdered defoaming masterbatch, characterized in that: It comprises a fixed platform (1) arranged below the defoaming masterbatch strip, a drying fan arranged inside the fixed platform (1), an air outlet pipeline (2) arranged on the fixed platform (1), and a return hood (3) arranged above the air outlet pipeline (2) of the fixed platform (1); The reflux hood (3) is provided with a reflux portion, and the reflux hood (3) is provided with a clearance port (4). When the airflow generated by the drying fan is discharged from the air outlet pipeline (2) and passes through the reflux portion, the reflux portion changes the direction of the airflow so that the airflow refluxes downward and acts on the defoaming masterbatch strips.

2. A drying device for producing powdered defoaming masterbatch according to claim 1, characterized in that: The air outlet duct (2) is provided with a diffusion section (5), the top of the return hood (3) is provided with two arc sections (6), and a diversion section (7) is provided at the connection between the two arc sections (6), and the diversion section (7) is also arc-shaped.

3. A drying device for producing powdered defoaming masterbatch according to claim 2, characterized in that: Connecting sections (8) are provided at the connection points between the two ends of the diversion section (7) and the two arc sections (6).

4. A drying device for producing powdered defoaming masterbatch according to claim 3, characterized in that: The clearance opening (4) is arranged on the circumference of the return cover (3), and the masterbatch strips pass through the clearance opening (4) into the interior of the return cover (3).

Images