A casting strip head with a distribution plate

Abstract

This utility model provides a casting strip head with a distribution plate, which is low in cost. It includes a distribution cavity, the bottom outlet of which is bolted to a casting strip plate. The casting strip plate has a groove, and the bottom of the groove has a mold hole. The key feature is that: the distribution plate is placed at the bottom of the groove; the shape of the distribution plate matches the inner wall shape of the groove; the top surface of the distribution plate is flush with or lower than the top surface of the casting strip plate; the entire distribution plate is uniformly provided with sieve holes; and the bottom surface of the distribution cavity and the top surface of the casting strip plate are planarly sealed.

Description

Technical Field

[0001] This utility model relates to the field of polymer granulation technology, specifically a casting strip head with a distribution plate. Background Technology

[0002] Currently, underwater strip pelletizing systems are commonly used in polymer granulation processes. These systems consist of a casting head, a guide plate, a cutting chamber, cooling pipes, a dryer, and a vibrating screen. The casting head distributes and extrudes the melt through multiple orifices to form slender strips. These strips are then fed into the cutting chamber via a water-sprayed guide plate and cut to form regular particles of a specific weight. The casting head consists of a distribution cavity and a casting plate. In a simpler structure, the casting plate is a single plate, approximately 40mm thick, directly bolted to the cavity without a gasket, relying on a flat surface for sealing. Sometimes, there are two requirements: one, the melt needs further homogenization or further mixing due to its tendency to degrade; two, there is often coking in the pipeline, requiring protection to prevent coking or impurities from entering the product. In these cases, a casting plate with a distribution plate can be used.

[0003] Existing cast strip heads with distribution plates, such as Figure 1 As shown, it includes a distribution cavity and a casting strip plate. A distribution plate 3 is installed between the distribution cavity and the casting strip plate. The distribution plate 3 has a sieve hole in the middle as a sieve plate, and the edge is solid as a mounting plate 6. An upper sealing gasket is provided between the mounting top surface of the distribution plate 3 and the distribution cavity, and a lower sealing gasket is provided between the bottom surface of the distribution plate 3 and the top surface of the casting strip plate. The distribution cavity, the upper sealing gasket, the distribution plate 3, the lower sealing gasket and the casting strip plate are connected by bolts.

[0004] Because the distribution plate itself has a certain thickness, and the distance from the outlet of the distribution cavity to the outlet of the casting strip plate cannot be too long, the thickness of the casting strip plate must be reduced to ensure that the distance meets the requirements. The distribution plate is approximately 10mm thick, while the casting strip plate is reduced to 24mm thick. However, due to the reduced rigidity of the casting strip plate after the thickness reduction, it cannot meet the requirements for planar sealing. Therefore, two layers of sealing gaskets must be added to the top and bottom of the distribution plate, increasing manufacturing costs. When replacing the distribution plate, every bolt on the distribution plate and sealing gaskets needs to be unscrewed. When cleaning is required, not only the distribution plate and casting strip plate need to be cleaned, but also the sealing gaskets and the gaps between the upper and lower sealing gaskets and the distribution plate need to be cleaned, making the replacement and cleaning process cumbersome and increasing labor and time costs. Summary of the Invention

[0005] To address the drawback of existing casting strip heads with distribution plates requiring the addition of two layers of sealing gaskets above and below the distribution plate, which increases costs, this invention provides a casting strip head with a distribution plate that is cost-effective.

[0006] A casting strip head with a distribution plate includes a distribution cavity, a casting strip plate is bolted to the bottom outlet of the distribution cavity, the casting strip plate has a groove, and a mold hole is formed at the bottom of the groove. The distribution plate is characterized in that: the bottom of the groove is occupied by a distribution plate, the shape of the distribution plate matches the inner wall shape of the groove, the top surface of the distribution plate is flush with or lower than the top surface of the casting strip plate, and the entire distribution plate is uniformly provided with sieve holes; the bottom surface of the distribution cavity and the top surface of the casting strip plate are planarly sealed.

[0007] By adopting the above-described structure of this utility model, the distribution plate is placed in the groove of the cast strip plate, maintaining the original thickness of the cast strip plate. This allows the cast strip plate to use a flat seal without the need for a gasket, saving the cost of manufacturing and cleaning gaskets. The distribution plate is movable, and installation and removal are as simple as placing the distribution plate directly into and removing it from the groove of the cast strip plate. The installation and removal process is simple and quick, reducing installation and maintenance costs. The distribution plate does not require bolts for installation, thus eliminating the need for the solid mounting plate surrounding the traditional mounting plate. This also reduces the thickness of the distribution plate, thereby reducing manufacturing materials and lowering manufacturing costs. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of a distribution board in the prior art;

[0009] Figure 2 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0010] See Figure 2 A casting strip head with a distribution plate includes a distribution cavity 1. A casting strip plate 2 is installed at the bottom outlet of the distribution cavity 1 via bolts (not shown in the figure). The bottom surface of the distribution cavity 1 and the top surface of the casting strip plate 2 are planarly sealed. The casting strip plate 2 has a groove 4, and a mold hole is formed at the bottom of the groove 4. A distribution plate 3 is placed at the bottom of the groove 4. The shape of the distribution plate 3 matches the inner wall shape of the groove 4. The top surface of the distribution plate 3 is flush with or lower than the top surface of the casting strip plate 2 to avoid affecting the sealing effect. The entire distribution plate 3 is uniformly provided with sieve holes 5, achieving homogeneous mixing of the melt and blocking coking foreign matter.

[0011] During installation, simply place the distribution plate 3 into the groove 4 within the casting strip plate 2, and then connect the casting strip plate 2 and the distribution cavity 1 with bolts. To disassemble the distribution plate 3, simply unscrew the bolts connecting the distribution cavity 1 and the casting strip plate 2, and remove the distribution plate 3 from the groove 4 within the casting strip plate 2. Cleaning is also straightforward; simply remove the distribution plate 3 to clean all gaps in the casting strip head. The installation, disassembly, and cleaning processes are simple and quick, significantly reducing labor and time costs.

[0012] In this embodiment, the distribution plate 3 does not require bolts for installation. Therefore, the solid mounting plate 6 around the perimeter of the traditional distribution plate can be eliminated, and the thickness of the distribution plate 3 can be reduced, thereby reducing manufacturing materials and lowering manufacturing costs. In this embodiment, the thickness of the cast distribution plate 3 is approximately 5mm.

Claims

1. A casting strip head with a distribution plate, comprising a distribution cavity, wherein a casting strip plate is bolted to the bottom outlet of the distribution cavity, the casting strip plate having a groove, and a die hole being formed at the bottom of the groove, characterized in that: A distribution plate is placed at the bottom of the groove. The shape of the distribution plate matches the shape of the inner wall of the groove. The top surface of the distribution plate is flush with or lower than the top surface of the casting strip plate. The entire distribution plate is uniformly provided with sieve holes. The bottom surface of the distribution cavity and the top surface of the casting strip plate are planarly sealed.

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