FILTER PLATE FOR PLASTIC PROCESSING APPARATUS

Abstract

Disclosed is a filter plate for a plastic processing apparatus, including: V-shaped grooves equidistantly formed in a plane of a mesh plate of the filter plate, V-shaped convex structures between adjacent V-shaped grooves. Filter holes having a predetermined aperture are provided on the bottom of the V-shaped grooves, and the side surfaces of the V-shaped convex structures. The top ends of the V-shaped convex structures are not provided with holes, and the outermost outer side of the V-shaped convex structure is facing downward without being provided with holes. The present invention increases the filtering area by 3-4 times without changing the aperture of filter hole, effectively extends the change cycle of filter during plastic production, and reduces waste of raw materials and the frequency of replacing filter plate during production and the labor intensity of the operators, which is beneficial to production safety and improvement of economic efficiency.

Claims

1. A filter plate (10) for plastic processing apparatus, comprising: V-shaped grooves (1) formed equidistantly in a plane of a mesh plate of the filter plate (10); V-shaped convex structures (2) formed between adjacent V-shaped grooves (1); and filter holes (3) having a predetermined aperture are formed in bottoms of the V-shaped grooves (1) and side surfaces of the V-shaped convex structures (2), wherein the top ends of the V-shaped convex structures (2) are not provided with any holes, and wherein outer side of outermost one of the V-shaped convex structures (2) is facing downward without being provided with any holes.

2. The filter plate (10) for plastic processing apparatus according to claim 1, wherein the V-shaped grooves (1) have a depth of - of the thickness of the filter plate (10) and an included angle of 30-60 degrees.

3. The filter plate (10) for plastic processing apparatus according to claim 1, wherein a folded portion of the filter plate (10) has an arc shape, an elliptical arc shape, or a linear shape.

4. The filter plate (10) for plastic processing apparatus according to claim 1, wherein the mesh plate has a thickness of 40-50 mm, and the corresponding V-shaped grooves (1) have a depth of 30-40 mm.

5. The filter plate (10) for plastic processing apparatus according to claim 1, wherein two filter holes (3) which are staggered in the longitudinal direction are provided on an oblique side of the V-shaped convex structure (2) in a lateral direction.

6. The filter plate (10) for plastic processing apparatus according to claim 1, wherein the filter plate (10) is made of a metal material.

7. The filter plate (10) for plastic processing apparatus according to claim 1, wherein the filter holes (3) are parallel to each other and perpendicular to the plane of the mesh plate of the filter plate (10).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG. 1 is a perspective view of the filter plate in plastic processing apparatus of the present invention.

[0021] FIG. 2 is a top plan view of the filter plate in plastic processing apparatus of the present invention.

[0022] FIG. 3 is a cross-sectional view taken along the line A-A of the filter plate in plastic processing apparatus of the present invention.

DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

[0023] The present invention is further described below in conjunction with the drawings and specific embodiments.

[0024] Referring to FIG. 1 to FIG. 3, a filter plate 10 in plastic processing apparatus includes V-shaped grooves 1 formed equidistantly in a plane of a mesh plate of the filter plate 10, V-shaped convex structures 2 between adjacent V-shaped grooves 1, filter holes 3 having a predetermined aperture provided on bottoms of the V-shaped grooves 1 and side surfaces of the V-shaped convex structures 2; wherein the top ends of the V-shaped convex structures 2 are not provided with any holes, and the outer side of the outermost one of the V-shaped convex structure 2 is facing downward without being provided with any holes. The mesh holes are distributed on both sides of the V-shaped convex structures 2, and the purpose of which is to reduce the impact strength of the melt on the mesh. At the same time, the aperture area is the largest when the mesh hole is on an inclined plane. The purpose of providing holes at the bottom of the V-shaped groove 1 is to have a melt flowing at the bottom, which can flush the impurities on both sides of the V-shape grooves 1 to the bottoms, improve the filtration efficiency and prolong the time of changing the filter.

[0025] In this embodiment, the V-shaped grooves 1 have a depth of - of the thickness of the filter plate 10 and an included angle of 30-60 degrees.

[0026] In this embodiment, a folded portion of the filter plate 10 has an arc shape, an elliptical arc shape, or a linear shape.

[0027] In this embodiment, the mesh plate has a thickness of 40-50 mm, and the corresponding V-shaped grooves 1 have a depth of 30-40 mm.

[0028] In this embodiment, referring to FIGS. 1-3, two filter holes 3 which are staggered in the longitudinal direction are provided on an oblique side of the V-shaped convex structure 2 in a lateral direction.

[0029] In this embodiment, the filter plate 10 is made of a metal material.

[0030] In this embodiment, the filter holes 3 are parallel to each other and perpendicular to the plane of the mesh plate of the filter plate 10.

[0031] The distribution of the mesh holes on both sides of the V-shaped groove 1 is intended to reduce the impact strength of the melt on the mesh, and at the same time, the aperture area is the largest when the mesh hole is on an inclined plane. The purpose of providing holes at the bottoms of the V-shaped grooves 1 is to have a melt flowing at the bottoms, which can flush the impurities on both sides of the V-shape grooves 1 to the bottoms, improve the filtration efficiency and prolong the time of changing the filter. The outer side of the outermost one of V-shaped convex structures 2 is facing downward without providing an opening, and the purpose of which is to cause a dead angle to the flowing melt to avoid impurities passing therethrough or remaining therein.

[0032] In the design of the filter plate 10, the design of the angle and the design of the hole position on an inclined plane of the filter plate 10 are also very important.

[0033] The change cycle of filter can be extended by 4-6 times on the original basis, the product yield and production efficiency are increased, the production cost is reduced, and the economic benefits are thus significantly promoted.

[0034] The key to the solution of the present invention is to increase the area of the filter mesh without increasing the aperture area of the filter plate. By virtue of the present invention, the traditional design of filter plate structure is changed, and the design provided by the present invention also improves the impact direction of the melt on the mesh and avoids breaking the filter when the melt pressure is excessively high. The filter plate of the present invention is to design the traditional plate-plane structure into a corrugated shape, which increases the filtering area by 3-4 times, effectively extends the change cycle of filter, changes the mesh angle, prevents the melt from breaking through the filter mesh, and reduces the waste of raw materials during the production and the labor intensity of the operators, so as to benefit to the production safety and improvement of economic efficiency.

[0035] The above-mentioned descriptions represent merely an exemplary embodiment of the present invention, without any intention to limit the scope of the present invention thereto. Various equivalent changes, alterations or modifications based on the claims of the present invention are all consequently viewed as being embraced by the scope of the present invention.