Granulating device for fluorosilicon dynamically vulcanized thermoplastic elastomer composite

Abstract

The present invention discloses a granulating device for a fluorosilicon dynamically vulcanized thermoplastic elastomer composite material, which relates to the technical field of composite material granulation. The device includes a base pre-set on the ground; a driving device fixed on one side of the upper end surface of the base; a screw extrusion device fixed on the other side of the upper end surface of the base, and its screw shaft is connected to the output shaft of the driving device; a feed inlet opened at the upper end of the screw extrusion device; an extrusion chamber fixed on the side of the screw extrusion device away from the driving device, and water inlets and outlets are respectively opened on both sides of the extrusion chamber. A baffle is fixed on the side of the extrusion chamber away from the screw extrusion device; a pressure increasing ring is fixed inside the extrusion chamber; a granulating assembly is fixed on the side of the pressure increasing ring away from the screw extrusion device; a granulating knife is attached to the granulating assembly and is driven by the screw extrusion device; and a cooling box is installed below the granulating assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of composite granulation, and specifically to a granulating device for a fluorosilicone dynamically vulcanized thermoplastic elastomer composite material. Background Art

[0002] A fluorosilicone dynamically vulcanized thermoplastic elastomer is a polymer material formed by blending a small amount of plastic and rubber, and then dynamically vulcanizing to form a continuous phase of plastic and a dispersed phase of rubber, showing rubber elasticity at room temperature and being able to be plasticized and formed at high temperatures. During production, it can be granulated by a granulator to facilitate blending and fusion;

[0003] Existing granulating devices generally fall into two methods: granulating first and then cooling, and cooling first and then granulating. However, the method of cooling first and then granulating requires a longer production line, and the material needs to be made into strips for cooling first. While granulating first and then cooling will cause the material to produce wire drawing phenomenon when it is in a molten state, affecting granulation.

[0004] In view of the above problems, the present invention provides a granulating device for a fluorosilicone dynamically vulcanized thermoplastic elastomer composite material to solve the above problems. Summary of the Invention

[0005] To achieve the above object, the present invention provides the following technical solution: A granulating device for a fluorosilicone dynamically vulcanized thermoplastic elastomer composite material, comprising:

[0006] A base, pre-set on the ground;

[0007] A driving device, fixed on one side of the upper end surface of the base;

[0008] A screw extrusion device, fixed on the other side of the upper end surface of the base, and its screw shaft is connected to the output shaft of the driving device;

[0009] A feed inlet, opened at the upper end of the screw extrusion device;

[0010] An extrusion chamber, fixed on the side of the screw extrusion device away from the driving device, and water inlets and outlets are respectively opened on both sides of it. A baffle is fixed on the side of the extrusion chamber away from the screw extrusion device;

[0011] A pressure increasing ring, fixed inside the extrusion chamber;

[0012] A granulating assembly, fixed on the side of the pressure increasing ring away from the screw extrusion device;

[0013] A granulating knife, attached to the granulating assembly and driven by the screw extrusion device; and

[0014] A cooling box, installed below the granulating assembly.

[0015] Further, preferably, the interior of the pressure increasing ring is conical, and its conical part faces the granulation assembly.

[0016] Further, preferably, the granulation assembly includes:

[0017] A granulation plate, fixed on one side of the pressure increasing ring, and provided with a plurality of granulation holes thereon;

[0018] A cooling plate, fixed on one side of the granulation plate, and both the middle positions of the cooling plate and the granulation plate are provided with socket holes, and the cooling plate is a hollow structure;

[0019] A circulation inlet and a circulation outlet, symmetrically opened on the cooling plate, and respectively communicated with the water inlet and the water outlet;

[0020] Cooling columns, configured to be multiple, with hollow interiors, fixed inside the cooling plate, and corresponding to the plurality of granulation holes; and

[0021] An oscillation assembly, configured to be multiple, fixed between the plurality of cooling columns.

[0022] Further, preferably, the thickness of the granulation plate is one-half of the thickness of the cooling plate.

[0023] Further, preferably, the plurality of oscillation assemblies are all perpendicular to the water flow direction.

[0024] Further, preferably, the oscillation assembly includes:

[0025] A fixed column, fixed between the cooling columns;

[0026] A limit disk, fixed at the middle position of the fixed column;

[0027] An oscillation column, slidably arranged on the fixed column, and an oscillation spring is arranged between the oscillation column and the limit disk;

[0028] A rotating shaft, configured to be two, symmetrically and rotatably arranged on the oscillation column;

[0029] A rotating blade, fixed at one end of the rotating shaft away from the oscillation column; and

[0030] An eccentric disk, fixed on the rotating shaft.

[0031] Further, preferably, buffer pads are fixed at both ends of the oscillation column.

[0032] Compared with the prior art, the present invention provides a granulation device for a fluorosilicon dynamically vulcanized thermoplastic elastomer composite material, and has the following beneficial effects:

[0033] In the present invention, the pressure-increasing ring can first perform extrusion-type pressure increase on the material, thereby increasing the density of the material, avoiding too low hardness of the formed particles, and the granulation plate in the granulation assembly can plastically process the pressure-increased material initially to make it form a strip-shaped molten state. Then, the material in the strip-shaped molten state enters the cooling plate to perform primary cooling on its outer wall, making its outer wall have a certain hardness, facilitating granulation, and reducing the wire drawing situation generated when cutting the molten material, improving the granulation qualification rate. And the oscillation assembly can perform small-amplitude oscillation on the cooling column, avoiding the adhesion of the material to the inner wall of the cooling column during the primary cooling of the material. After granulation, secondary cooling is performed through the cooling box, avoiding the adhesion of the particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 FIG. is an overall schematic diagram of a granulation device for a fluorosilicon dynamically vulcanized thermoplastic elastomer composite material;

[0035] Figure 2 FIG. is a schematic diagram of the granulation assembly of a granulation device for a fluorosilicon dynamically vulcanized thermoplastic elastomer composite material;

[0036] Figure 3 FIG. is a schematic diagram of the oscillation assembly of a granulation device for a fluorosilicon dynamically vulcanized thermoplastic elastomer composite material;

[0037] In the figure: 1, base; 2, driving device; 3, screw extrusion device; 4, feed inlet; 5, extrusion chamber; 6, pressure-increasing ring; 7, granulation assembly; 8, granulation knife; 9, baffle; 10, cooling box; 51, water inlet; 52, water outlet; 71, granulation plate; 72, cooling plate; 73, socket hole; 74, circulation inlet; 75, circulation outlet; 76, cooling column; 77, oscillation assembly; 771, fixed column; 772, limit disc; 773, oscillation column; 774, oscillation spring; 775, rotating shaft; 776, rotating blade; 777, eccentric disc. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0038] Refer to Figures 1 to 3 , the present invention provides a technical solution: a granulation device for a fluorosilicon dynamically vulcanized thermoplastic elastomer composite material, including:

[0039] Base 1, pre-set on the ground;

[0040] Driving device 2, fixed on one side of the upper end surface of the base 1;

[0041] Screw extrusion device 3, fixed on the other side of the upper end surface of the base 1, and its screw shaft is connected to the output shaft of the driving device 2;

[0042] Feed inlet 4, opened at the upper end of the screw extrusion device 3;

[0043] The extrusion chamber 5 is fixed to the side of the screw extrusion device 3 away from the driving device 2, and a water inlet 51 and a water outlet 52 are respectively provided on both sides thereof. A baffle 9 is fixed to the side of the extrusion chamber 5 away from the screw extrusion device 3;

[0044] The pressure increasing ring 6 is fixed inside the extrusion chamber 5;

[0045] The granulation assembly 7 is fixed to the side of the pressure increasing ring 6 away from the screw extrusion device 3;

[0046] The granulation knife 8 is attached to the granulation assembly 7 and is driven by the screw extrusion device 3; and

[0047] The cooling box 10 is installed below the granulation assembly 7.

[0048] It should be noted that the screw shaft of the screw extrusion device 3 extends to the granulation knife 8, so that the granulation knife 8 rotates synchronously with the screw shaft, thereby performing rotary granulation on the material.

[0049] In this embodiment, the inside of the pressure increasing ring 6 is conical, and its conical part faces the granulation assembly 7.

[0050] That is to say, the conical shape inside the pressure increasing ring 6 can reduce the space for the molten material to flow, thereby increasing the pressure on the molten material and improving the density of the molten material.

[0051] In this embodiment, the granulation assembly 7 includes:

[0052] The granulation plate 71 is fixed to one side of the pressure increasing ring 6, and a plurality of granulation holes are provided thereon;

[0053] The cooling plate 72 is fixed to one side of the granulation plate 71, and socket holes 73 are provided at the middle positions of both the cooling plate 72 and the granulation plate 71, and the cooling plate 72 is a hollow structure;

[0054] The circulation inlet 74 and the circulation outlet 75 are symmetrically provided on the cooling plate 72 and are respectively communicated with the water inlet 51 and the water outlet 52;

[0055] The cooling columns 76 are configured to be multiple, are hollow inside, are fixed inside the cooling plate 72, and correspond to the plurality of granulation holes; and

[0056] The oscillation assemblies 77 are configured to be multiple and are fixed between the plurality of cooling columns 76.

[0057] As a preferred embodiment, the thickness of the granulation plate 71 is one-half of the thickness of the cooling plate 72.

[0058] That is to say, the thickness of the cooling plate 72 determines the path length of the material cooling, thereby avoiding excessive cooling of the material due to too long a path, which may cause it to completely deviate from the molten state and easily block the cooling column 76. At the same time, it avoids insufficient cooling due to too short a path, causing the material to still maintain a completely molten state, resulting in useless work for the cooling column 76.

[0059] As a preferred embodiment, the plurality of oscillation components 77 are all perpendicular to the water flow direction.

[0060] As a preferred embodiment, the oscillation component 77 includes:

[0061] A fixed column 771, fixed between the cooling columns 76;

[0062] A limit disk 772, fixed at the middle position of the fixed column 771;

[0063] An oscillation column 773, slidably arranged on the fixed column 771, and an oscillation spring 774 is arranged between the oscillation column 773 and the limit disk 772;

[0064] A rotating shaft 775, configured to be two, symmetrically rotatably arranged on the oscillation column 773;

[0065] A rotating blade 776, fixed at one end of the rotating shaft 775 away from the oscillation column 773; and

[0066] An eccentric disk 777, fixed on the rotating shaft 775.

[0067] As a preferred embodiment, buffer pads are fixed at both ends of the oscillation column 773.

[0068] That is to say, the rotating blade 776 rotates through the water flow, thereby driving the eccentric disk 777 to rotate. The rotation of the eccentric disk 777 can generate an oscillation force, so that the oscillation column 773 reciprocally slides on the fixed column 771 through cooperation with the oscillation spring, thereby slightly oscillating the cooling column 76 and avoiding the adhesion of the material to the inner wall of the cooling column 76 during the initial cooling of the material.

[0069] Specifically, the material is put into the feeding port 4, then melted and extruded through the screw extrusion device 3, and the pressure of the material is increased by extrusion through the pressure increasing ring 6 to improve the density of the material and avoid too low hardness of the formed particles. Then, it enters the granulation assembly 7, and the material is preliminarily shaped through the granulation plate 71 to form a strip-shaped molten state. Then, the strip-shaped molten material enters the cooling plate 72 to cool its outer wall preliminarily, making its outer wall have a certain hardness, facilitating granulation, and reducing the wire drawing phenomenon generated when cutting the molten material, improving the qualified rate of granulation. Moreover, through the oscillation assembly 774, the cooling column 76 can be oscillated slightly to avoid the material adhering to the inner wall of the cooling column 76 during the preliminary cooling of the material. After granulation, secondary cooling is carried out through the cooling box 10 to avoid particle adhesion.

[0070] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent replacements or changes, should be covered by the protection scope of the present invention.

Claims

1. A granulating device for a fluorosilicon dynamically vulcanized thermoplastic elastomer composite material, characterized in that: Comprising: A base (1), pre - installed on the ground; A driving device (2), fixed on one side of the upper end surface of the base (1); A screw extrusion device (3), fixed on the other side of the upper end surface of the base (1), and its screw shaft is connected to the output shaft of the driving device (2); A feed inlet (4), opened at the upper end of the screw extrusion device (3); An extrusion chamber (5), fixed on the side of the screw extrusion device (3) away from the driving device (2), and water inlets (51) and water outlets (52) are respectively opened on both sides thereof. A baffle (9) is fixed on the side of the extrusion chamber (5) away from the screw extrusion device (3); A pressure - increasing ring (6), fixed inside the extrusion chamber (5); A granulation component (7), fixed on the side of the pressure - increasing ring (6) away from the screw extrusion device (3); A granulation cutter (8), attached to the granulation component (7) and driven by the screw extrusion device (3); And A cooling box (10), installed below the granulation component (7); The granulation component (7) includes: A granulation plate (71), fixed on one side of the pressure - increasing ring (6), and a plurality of granulation holes are opened thereon; A cooling plate (72), fixed on one side of the granulation plate (71), and socket holes (73) are opened at the middle positions of both the cooling plate (72) and the granulation plate (71), and the cooling plate (72) is a hollow structure; A circulation inlet (74) and a circulation outlet (75), symmetrically opened on the cooling plate (72) and respectively communicated with the water inlet (51) and the water outlet (52); Cooling columns (76), configured to be multiple, with hollow interiors, fixed inside the cooling plate (72) and corresponding to the plurality of granulation holes; and Oscillation components (77), configured to be multiple, fixed between the plurality of cooling columns (76); The oscillation component (77) includes: A fixed column (771), fixed between the cooling columns (76); A limit disk (772), fixed at the middle position of the fixed column (771); An oscillation column (773), slidably arranged on the fixed column (771), and an oscillation spring (774) is arranged between the oscillation column (773) and the limit disk (772); Rotating shafts (775), configured to be two, symmetrically and rotatably arranged on the oscillation column (773); Rotating blades (776), fixed at one end of the rotating shaft (775) away from the oscillation column (773); and Eccentric disks (777), fixed on the rotating shaft (775).

2. The granulating device for a fluorosilicon dynamically vulcanized thermoplastic elastomer composite material according to claim 1, characterized in that: The interior of the pressure - increasing ring (6) is conical, and its conical part faces the granulation component (7).

3. The granulating device of a fluorosilicon dynamically vulcanized thermoplastic elastomer composite material according to claim 1, characterized in that: The thickness of the granulation plate (71) is one - half of the thickness of the cooling plate (72).

4. The granulating device of a fluorosilicon dynamically vulcanized thermoplastic elastomer composite material according to claim 1, characterized in that: The plurality of oscillation components (77) are all perpendicular to the water flow direction.

5. The granulating device for a fluorosilicon dynamically vulcanized thermoplastic elastomer composite material according to claim 1, characterized in that: Buffer pads are fixed at both ends of the oscillation column (773).

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