A new type of screw element

Abstract

The present invention discloses a novel screw element, comprising a screw body, wherein a plurality of spiral propulsion ends are fixedly connected to the outer periphery of the screw body at equal intervals, a mounting end is fixedly connected to one end of the screw body on one side of the plurality of spiral propulsion ends, an axial groove is provided inside the mounting end, and the interior of the axial groove is fixedly connected to one end of an output shaft, and a screw element is provided at the other end of the screw body on the other side of the plurality of spiral propulsion ends, and the screw element comprises an involute plug, an element head and an element body. The novel screw element has a simple structure and a novel design. By providing an involute plug, the uneven distribution of friction heat under high-speed operation of a traditional conical screw head can be effectively reduced, and the high-speed rotation friction of the traditional conical screw head can be avoided, which causes abnormally high temperature in the center of the material in the cavity, resulting in degradation and discoloration.

Description

Technical Field

[0001] The invention relates to the technical field of a novel screw element, in particular to a novel screw element. Background Art

[0002] The screw element is used in the screw head of the assembled twin-screw extruder. The conventional twin-screw head is conical. In high-speed extrusion, the screw speed reaches 300-500rpm, or even higher. Under the action of friction, the center temperature of the material in the cavity is about 30-60℃ higher than the edge. Therefore, it is necessary to use this element to perform a dispersed function during the operation of the extruder so that the temperature of the material in the extruder die cavity is evenly distributed.

[0003] The traditional conical screw head does not dissipate heat evenly, and it is easy for friction to occur during the high-speed rotation of the conical screw head, causing the temperature of the center of the material in the cavity to be abnormally high, resulting in degradation and discoloration. Therefore, we have made improvements to this and proposed a new type of screw element. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] The present invention provides a new type of screw element, including a screw body, a plurality of spiral advancement ends are equidistantly fixedly connected to the outer periphery of the screw body, one end of the screw body on one side of the plurality of spiral advancement ends is fixedly connected to a mounting end, an axial groove is provided inside the mounting end, the interior of the axial groove is fixedly connected to one end of an output shaft, a screw element is provided at the other end of the screw body on the other side of the plurality of spiral advancement ends, and the screw element includes an involute plug, an element head and an element body.

[0006] As a preferred technical solution of the present invention, the involute plug is a polyhedron structure with an arc-shaped top, flat angles on both sides of the bottom, and rounded corners on the other side of the bottom.

[0007] As a preferred technical solution of the present invention, the component head is a polyhedron structure with flat angles on two sides and rounded angles on the other two sides. The bottom of the involute top head is fixedly connected to the angle between the flat angle and the rounded angle of the top of the component head, and clamping ends are provided at the flat angles on both sides of the component head.

[0008] As a preferred technical solution of the present invention, the distance between the flat corners on both sides of the element head is smaller than the diameter of the screw body, and the distance between the rounded corners on both sides of the element head is equal to the diameter of the screw body.

[0009] As a preferred technical solution of the present invention, the top of the element body is fixedly connected to the center end of the bottom of the element head, and a thread is provided on the outer periphery of the element body.

[0010] As a preferred technical solution of the present invention, a threaded hole is provided at the other end of the screw body on the other side of the plurality of spiral advancement ends, a washer is provided on one side of the threaded hole, and a through hole is provided at the inner center end of the washer.

[0011] As a preferred technical solution of the present invention, the through hole inside the gasket is sleeved on the outer periphery of the element body, and the outer periphery of the element body is threadedly connected to the inside of the threaded hole.

[0012] As a preferred technical solution of the present invention, the screw body, the spiral propulsion end and the screw element are all made of stainless steel, and the surfaces of the screw body, the spiral propulsion end and the screw element are smooth.

[0013] The beneficial effects of the present invention are:

[0014] This new type of screw element, by setting an involute top, can effectively reduce the uneven distribution of friction heat under high-speed operation of the traditional conical screw head, and avoid the high-speed rotation friction of the traditional conical screw head causing abnormally high temperature in the center of the material in the cavity, leading to degradation and discoloration. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the installation structure of a novel screw element of the present invention;

[0017] Figure 2 It is a schematic diagram of the split structure of a novel screw element of the present invention;

[0018] Figure 3 It is a schematic diagram of the overall structure of a screw element of a novel screw element of the present invention;

[0019] Figure 4 It is a structural schematic diagram of one side of a screw element of a novel screw element of the present invention;

[0020] Figure 5 It is a schematic diagram of the structure of the other side of a screw element of a novel screw element of the present invention.

[0021] In the figure: 1, screw body; 101, threaded hole; 2, screw advancement end; 3, mounting end; 4, screw element; 401, involute top; 402, element head; 403, element body; 404, clamping end; 5, washer. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0023] Example: Figure 1-5 As shown, a new type of screw element of the present invention includes a screw body 1, a plurality of spiral advancing ends 2 are equidistantly fixedly connected to the outer circumference of the screw body 1, one end of the screw body 1 on one side of the plurality of spiral advancing ends 2 is fixedly connected to a mounting end 3, an axial groove is provided inside the mounting end 3, and the interior of the axial groove is fixedly connected to one end of the output shaft, a screw element 4 is provided at the other end of the screw body 1 on the other side of the plurality of spiral advancing ends 2, and the screw element 4 includes an involute plug 401, an element head 402 and an element body 403.

[0024] Among them, the involute plug 401 is a polyhedron structure with an arc-shaped top, flat angles on both sides of the bottom, and rounded corners on the other side of the bottom. By setting the involute plug 401, the uneven distribution of friction heat under high-speed operation of the traditional conical screw head can be effectively reduced, and the high-speed rotation friction of the traditional conical screw head can be avoided, which causes the temperature in the center of the material in the cavity to be abnormally high, resulting in degradation and discoloration.

[0025] Among them, the component head 402 is a polyhedron structure with flat angles on two sides and rounded angles on the other two sides. The bottom of the involute top 401 is fixedly connected to the flat angle and the rounded angle of the top of the component head 402, and the flat angles on both sides of the component head 402 are provided with clamping ends 404. The provided clamping ends 404 are convenient for clamping with the clamping ends 404 through a wrench, which is convenient for installation and disassembly.

[0026] Among them, the distance between the flat angles on both sides of the element head 402 is smaller than the diameter of the screw body 1, and the distance between the rounded corners on both sides of the element head 402 is equal to the diameter of the screw body 1. By making the distance between the flat angles on both sides of the element head 402 smaller than the diameter of the screw body 1, and the distance between the rounded corners on both sides of the element head 402 is equal to the diameter of the screw body 1, the installed screw element 4 and one end of the screw body 1 are more integrated, which facilitates the discharge efficiency of the material when the screw is advanced.

[0027] The top of the element body 403 is fixedly connected to the bottom center end of the element head 402 , and a thread is provided on the periphery of the element body 403 , so that the screw element 4 can be easily installed by the arrangement of the element body 403 and the element head 402 .

[0028] Among them, a threaded hole 101 is opened at the other end of the screw body 1 on the other side of the multiple spiral propulsion ends 2, a washer 5 is arranged on one side of the threaded hole 101, and a through hole is opened at the center end of the washer 5. The threaded hole 101 is opened to facilitate the installation of the screw element 4.

[0029] Among them, the through hole inside the gasket 5 is sleeved on the outer periphery of the element body 403, and the outer periphery of the element body 403 is threadedly connected to the inner part of the threaded hole 101. The setting of the gasket 5 facilitates the installation and disassembly of the screw element 4 and the screw body 1, thereby improving the portability of installation and disassembly.

[0030] Among them, the screw body 1, the spiral propulsion end 2 and the screw element 4 are all made of stainless steel, and the surfaces of the screw body 1, the spiral propulsion end 2 and the screw element 4 are smooth. Stainless steel has good corrosion resistance, formability and toughness. By making the screw body 1, the spiral propulsion end 2 and the screw element 4 all made of stainless steel, the corrosion resistance of the screw body 1, the spiral propulsion end 2 and the screw element 4 can be improved, and the surfaces of the screw body 1, the spiral propulsion end 2 and the screw element 4 are smooth, thereby avoiding adhesion between the screw body 1, the spiral propulsion end 2 and the screw element 4 and the propulsion material inside the propulsion chamber, thereby improving the propulsion efficiency of the material and facilitating cleaning.

[0031] Working principle: When working, firstly, sleeve the through hole of the washer 5 on the outer periphery of the element body 403 of the screw element 4, and clamp it on both sides of the clamping end 404 of the element head 402 through a wrench, bolt the element body 403 to the inside of the threaded hole 101 at one end of the screw body 1, and tighten it with a wrench, then install the screw body 1 together with the screw element 4 inside the pusher, and drive the spiral pushing end 2 to rotate by the rotation of the screw body 1, then the material inside the molding cavity can be pushed, the involute plug 401 can effectively reduce the uneven distribution of friction heat under the high-speed operation of the traditional conical screw head, and avoid the high-speed rotation friction of the traditional conical screw head causing abnormally high temperature in the center of the material in the cavity, resulting in degradation and discoloration, and the clamping end 404 is convenient for passing through the wrench It is clamped with the clamping end 404 for easy installation and disassembly. The distance between the flat angles on both sides of the element head 402 is smaller than the diameter of the screw body 1, and the distance between the rounded angles on both sides of the element head 402 is equal to the diameter of the screw body 1, so that the installed screw element 4 and one end of the screw body 1 are more integrated, which is convenient for the discharge efficiency of the material when the screw is advanced. The screw body 1, the spiral advancement end 2 and the screw element 4 are all made of stainless steel, which can improve the corrosion resistance of the screw body 1, the spiral advancement end 2 and the screw element 4, and the surface of the screw body 1, the spiral advancement end 2 and the screw element 4 is smooth, which avoids the adhesion between the screw body 1, the spiral advancement end 2 and the screw element 4 and the advanced material inside the advancement chamber, thereby improving the advancement efficiency of the material and facilitating cleaning.

[0032] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0033] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A novel screw element, comprising a screw body (1), characterized in that: The outer circumference of the screw body (1) is fixedly connected with a plurality of spiral propulsion ends (2) at equal intervals, one end of the screw body (1) on one side of the plurality of spiral propulsion ends (2) is fixedly connected with a mounting end (3), an axial groove is provided inside the mounting end (3), the interior of the axial groove is fixedly connected with one end of the output shaft, and the other end of the screw body (1) on the other side of the plurality of spiral propulsion ends (2) is provided with a screw element (4), the screw element (4) comprising an involute plug (401 ), a component head (402) and a component body (403), the involute pin (401) is a polyhedron structure with an arc-shaped top, flat angles on both sides of the bottom and rounded corners on the other side of the bottom, the component head (402) is a polyhedron structure with flat angles on two sides and rounded corners on the other two sides, the bottom of the involute pin (401) is fixedly connected to the angle between the flat angle and the rounded corner of the top of the component head (402), and the flat angles on both sides of the component head (402) are provided with clamping ends (404).

2. A novel screw element according to claim 1, characterized in that: The distance between the straight corners on both sides of the element head (402) is smaller than the diameter of the screw body (1), and the distance between the rounded corners on both sides of the element head (402) is equal to the diameter of the screw body (1).

3. A novel screw element according to claim 1, characterized in that: The top of the element body (403) is fixedly connected to the bottom center end of the element head (402), and a thread is provided on the outer periphery of the element body (403).

4. A novel screw element according to claim 1, characterized in that: A threaded hole (101) is provided at the other end of the screw body (1) on the other side of the plurality of spiral propulsion ends (2), a washer (5) is provided on one side of the threaded hole (101), and a through hole is provided at the inner center end of the washer (5).

5. A novel screw element according to claim 4, characterized in that: The through hole inside the gasket (5) is sleeved on the outer periphery of the element body (403), and the outer periphery of the element body (403) is threadedly connected to the inside of the threaded hole (101).

6. A novel screw element according to claim 1, characterized in that: The screw body (1), the screw advancing end (2) and the screw element (4) are all made of stainless steel, and the surfaces of the screw body (1), the screw advancing end (2) and the screw element (4) are smooth.

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