CN219360244U

CN219360244U - Mixing feeding mechanism of double-screw extruder

Info

Publication number: CN219360244U
Application number: CN202222572229.5U
Authority: CN
Inventors: 李益心; 周灏
Original assignee: Changshu Jindu Plastic Industry Co ltd
Current assignee: Changshu Jindu Plastic Industry Co ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2023-07-18
Anticipated expiration: 2032-09-28

Abstract

The utility model relates to a mixing feeding mechanism of a double-screw extruder, which comprises a charging barrel, wherein the top of the barrel of the charging barrel is provided with a charging port, the bottom of the barrel is provided with a discharging port, and the discharging port is connected with the charging end of a double-screw extrusion module; a bulk cone, an inclined material disturbing ring and a material disturbing frame are arranged in the barrel body of the material barrel; the bulk material cone is a hollow cone, the tip of the bulk material cone faces the feeding port, and a material refining hanging rod is arranged at the bottom of the bulk material cone; the oblique material disturbing ring is positioned on the inner wall of the cylinder; the material disturbing frame is connected with the inner wall of the cylinder body and comprises an oblique material disturbing sheet and a central supporting rod, wherein the oblique material disturbing sheet is connected with the inner wall of the cylinder body through a frame ring, and the central supporting rod supports a bulk cargo cone. According to the utility model, through structural improvement, the gravitational potential energy and kinetic energy of falling plastic particles are utilized, and dispersion, mixing and disturbance are carried out through a specially designed structure, so that the full mixing of various plastic particles is realized, a motor is not needed, and the equipment cost is reduced; no electricity consumption, energy conservation and environmental protection.

Description

Mixing feeding mechanism of double-screw extruder

Technical Field

The utility model relates to plastic powder production equipment, in particular to a mixing and feeding mechanism of a double-screw extruder.

Background

The plastic powder is prepared by mixing one or more plastic particle raw materials, heating to be in a molten state, extruding by a double-screw extruder, forming a flaky plastic product by a die, and finally crushing, crushing and the like.

When a plurality of plastic particles are required to be mixed, the plastic particles entering the charging barrel of the double-screw extruder may have uneven mixing, and the subsequent plastic powder quality can be directly influenced. In order to solve the above-mentioned defect, the application number is: 202021366094.1, publication number: CN213325274U, entitled: chinese patent utility model of a double screw metering feeder with uniform feeding, which describes: the utility model provides a feed even twin-screw measurement feeding machine, includes the feeding device, and feeding device left side top is equipped with the stirring fill, be equipped with the supporting shoe between stirring fill and the feeding device, be equipped with in the supporting shoe and prevent putty device, prevent putty device fixed connection is on supporting shoe inner wall right side, and feeding device exit is equipped with even feeding device, and feeding device below is equipped with strutting arrangement, is equipped with elevating gear in the strutting arrangement, and strutting arrangement below fixed welding has the landing leg. The stirring hopper comprises a motor A, a supporting frame is arranged outside the motor A, the motor A is fixedly connected to the outer wall of the top of the stirring hopper through the supporting frame, a feed inlet is formed in the left side of the motor A, the feed inlet is fixedly connected to the left side of the outer wall of the top of the stirring hopper, a rotating shaft A is fixedly connected to the motor A, a stirring frame is welded to the inner part of the stirring hopper through the rotating shaft A, and a discharge hole is formed in the position right below the stirring frame. "technical scheme.

In the scheme, the motor drives the rotating shaft A and the stirring frame to rotate, so that plastic particles are stirred. However, the purchase cost of the motor is high, and the resistance of the stirring frame rotating in the plastic particles is high, so that the power consumption of the motor is high, the energy conservation and environmental protection are not facilitated, and the motor is easy to burn out due to the large load.

Disclosure of Invention

The purpose of the utility model is that:

the mixing and feeding mechanism of the double-screw extruder is developed, the gravitational potential energy and kinetic energy of falling plastic particles are utilized through structural improvement, dispersion, mixing and disturbance are carried out through a specially designed structure, the full mixing of various plastic particles is realized, a motor is not needed, and the equipment cost is reduced; no electricity consumption, and is beneficial to energy conservation and environmental protection.

In order to achieve the above object, the present utility model provides the following technical solutions:

the mixing and feeding mechanism of the double-screw extruder comprises a charging barrel, wherein the top of a barrel of the charging barrel is provided with a charging port, the bottom of the barrel is provided with a discharging port, and the discharging port is connected with the charging end of a double-screw extrusion module; a bulk cone, an inclined material disturbing ring and a material disturbing frame are arranged in the barrel body of the material barrel; the bulk material cone is a hollow cone, the tip of the bulk material cone faces the feeding port, and a material refining hanging rod is arranged at the bottom of the bulk material cone; the oblique material disturbing ring is positioned on the inner wall of the cylinder; the material disturbing frame is connected with the inner wall of the cylinder body and comprises an oblique material disturbing sheet and a central supporting rod, wherein the oblique material disturbing sheet is connected with the inner wall of the cylinder body through a frame ring, and the central supporting rod supports a bulk cargo cone.

Further, the bulk cone is positioned right below the feeding hole and is coaxially arranged with the feeding hole; the bulk material cone and the cylinder are coaxially arranged, and a gap is reserved between the bottom edge of the bulk material cone and the inner wall of the cylinder.

Further, the inclined material disturbing ring is annular, and the cross section of the inclined material disturbing ring is obliquely arranged relative to the horizontal plane; the oblique material disturbing ring is specifically positioned on an extension line of a bus of the bulk material cone.

Further, the refining vertical rods are in an elongated rod shape and are vertically arranged, and the refining vertical rods are arranged in a circumferential array shape relative to the bulk cone; the refining vertical rod corresponds to the position of the oblique disturbing ring.

Further, the frame ring is annular, the oblique disturbance material sheets are sheet-shaped and are arranged in a circumferential array relative to the central supporting rod, and the oblique disturbance material sheets are obliquely arranged relative to the horizontal plane.

Further, the oblique disturbance material sheet is specifically positioned at a position close to the discharge hole; the center support rod is vertically arranged and connected with the bottom of the tip of the bulk cone.

The beneficial effects of the utility model are as follows: the mixing and feeding mechanism of the double-screw extruder is characterized in that a bulk cone, an inclined material disturbing ring and a material disturbing frame are designed in a charging barrel of the double-screw extruder through structural improvement, and the bulk cone, the inclined material disturbing ring and the material disturbing frame are used for sequentially dispersing, mixing and disturbing plastic particles by utilizing gravitational potential energy and kinetic energy of falling of the plastic particles, so that the full mixing of various plastic particles is realized in the falling feeding process without a motor, and the equipment cost is directly reduced; no electricity consumption, saving the electricity consumption of enterprises and being beneficial to energy conservation and environmental protection.

Drawings

FIG. 1 is a cross-sectional view of the whole structure of a mixing and feeding mechanism of a twin-screw extruder.

Fig. 2 is a three-dimensional view of a part of the structure of a mixing and feeding mechanism of a twin-screw extruder.

Fig. 3 is a side down view of the structure shown in fig. 2.

Reference numerals for components in the drawings:

1. a charging barrel; 11. a cylinder; 12. a feed inlet; 13. a discharge port; 2. a bulk cone; 21. a material-homogenizing hanging rod; 3. a material oblique ring; 4. a material disturbing frame; 41. oblique disturbance material sheets; 42. a central strut; 43. and a frame ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the detailed description and related preferred, examples, while indicating the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model.

Referring to fig. 1 to 3, a mixing and feeding mechanism of a double-screw extruder comprises a charging barrel 1, wherein a charging opening 12 is arranged at the top of a barrel 11 of the charging barrel 1, a discharging opening 13 is arranged at the bottom of the barrel, the charging opening 12 is connected with a feeding pipe of plastic particles, and the discharging opening 13 is connected with a feeding end of a double-screw extrusion module and is used for extruding, namely supplying the plastic particles to double screws; a bulk cargo cone 2, an inclined material disturbing ring 3 and a material disturbing frame 4 are arranged in a cylinder body 11 of the charging barrel 1; the bulk material cone 2 is a hollow cone, the tip of the bulk material cone faces the feeding opening 12, the bulk material cone 2 is used for dispersing falling plastic particles, a material-refining vertical rod 21 is arranged at the bottom of the bulk material cone 2, and the material-refining vertical rod 21 is used for refining the plastic particles falling from the oblique material-disturbing ring 3; the inclined material disturbing ring 3 is positioned on the inner wall of the cylinder 11, and the inclined material disturbing ring 3 is used for disturbing and mixing falling plastic particles; the material disturbing frame 4 is connected with the inner wall of the cylinder 11, the material disturbing frame 4 comprises an inclined material disturbing sheet 41 and a central supporting rod 42, the inclined material disturbing sheet 41 is connected with the inner wall of the cylinder 11 through a frame ring 43, the inclined material disturbing sheet 41 is used for disturbing falling plastic particles and enhancing mixing, and the central supporting rod 42 supports the bulk material cone 2 to fix the bulk material cone 2.

The bulk cone 2 is positioned right below the feed inlet 12 and is coaxially arranged with the feed inlet 12, so that falling plastic particles can be dispersed; the bulk material cone 2 and the cylinder 11 are coaxially arranged, and a gap is reserved between the bottom edge of the bulk material cone 2 and the inner wall of the cylinder 11 for falling of plastic particles.

The inclined material disturbing ring 3 is annular, and the cross section of the inclined material disturbing ring 3 is obliquely arranged relative to the horizontal plane, so that falling plastic particles can be disturbed and impacted; the oblique disturbance ring 3 is located in particular on the extension of the busbar of the bulk material cone 2, so that plastic particles falling from the bulk material cone 2 can strike the oblique disturbance ring 3.

The refining vertical rods 21 are in an elongated rod shape and are vertically arranged, and the refining vertical rods 21 are arranged in a circumferential array shape relative to the bulk cone 2; the material-homogenizing vertical rod 21 corresponds to the position of the oblique material-disturbing ring 3, and the material-homogenizing vertical rod 21 is used for blocking and homogenizing plastic particles falling from the oblique material-disturbing ring 3.

The frame ring 43 is annular, the oblique disturbance material sheets 41 are sheet-shaped and are arranged in a circumferential array relative to the central supporting rod 42, the oblique disturbance material sheets 41 are obliquely arranged relative to the horizontal plane, and the oblique disturbance material sheets 41 are used for disturbing falling plastic particles so as to enhance the uniformity of mixing.

The oblique disturbance material 41 is specifically located at a position close to the discharge port 13; the central strut 42 is arranged vertically and connected to the pointed bottom of the bulk cone 2, the central strut 42 being used for fixing and supporting the bulk cone 2.

The working principle of the utility model is as follows:

the plastic particles subjected to preliminary mixing enter a feed inlet 12 of the charging barrel 1 through a feed pipe, and enter the barrel 11 through the feed inlet 12;

in the falling process, plastic particles firstly contact a bulk cone 2, are separated and dispersed in multiple directions on the conical surface of the bulk cone 2, fall along the conical surface of the bulk cone 2, then fall on an inclined material disturbing ring 3, and collide on the inclined material disturbing ring 3 to realize remixing; then the plastic particles slide from the oblique disturbance ring 3, and the irregular falling track among the plastic particles is reinforced through the blocking of the material-homogenizing hanging rod 21, so as to realize material-homogenizing;

then the plastic particles fall on the inclined disturbance material sheet 41 of the disturbance material frame 4, the inclined disturbance material sheet 41 disturbs the plastic particles again, the uniform mixing of the plastic particles is further enhanced, and finally the plastic particles fall into the feeding end of the double-screw extruder through the discharging hole 13.

The above examples are provided to further illustrate the utility model and do not limit the utility model to these specific embodiments. Any modification, equivalent replacement, improvement, and extension etc. made within the spirit and principle described in the present utility model should be construed as being within the protection scope of the present utility model.

Claims

1. The mixing and feeding mechanism of the double-screw extruder comprises a charging barrel (1), wherein a charging port (12) is arranged at the top of a barrel (11) of the charging barrel (1), a discharging port (13) is arranged at the bottom of the barrel, and the discharging port (13) is connected with a charging end of a double-screw extrusion module; the method is characterized in that: a bulk cone (2), an inclined material disturbing ring (3) and a material disturbing frame (4) are arranged in a cylinder body (11) of the material cylinder (1); the bulk material cone (2) is a hollow cone, the tip of the bulk material cone faces the feeding hole (12), and a material refining hanging rod (21) is arranged at the bottom of the bulk material cone (2); the oblique material disturbing ring (3) is positioned on the inner wall of the cylinder body (11); the material disturbing frame (4) is connected with the inner wall of the cylinder body (11), the material disturbing frame (4) comprises an inclined material disturbing sheet (41) and a central supporting rod (42), the inclined material disturbing sheet (41) is connected with the inner wall of the cylinder body (11) through a frame ring (43), and the central supporting rod (42) supports the bulk cargo cone (2).

2. The twin screw extruder blending feed mechanism of claim 1, wherein: the bulk material cone (2) is positioned right below the feeding hole (12) and is coaxially arranged with the feeding hole (12); the bulk material cone (2) and the cylinder (11) are coaxially arranged, and a gap is reserved between the bottom edge of the bulk material cone (2) and the inner wall of the cylinder (11).

3. The twin screw extruder blending feed mechanism of claim 2, wherein: the inclined material disturbing ring (3) is annular, and the cross section of the inclined material disturbing ring (3) is obliquely arranged relative to the horizontal plane; the inclined material disturbing ring (3) is specifically positioned on an extension line of a bus of the bulk material cone (2).

4. A twin screw extruder blending feed mechanism as defined in claim 3, wherein: the material-homogenizing vertical rods (21) are in an elongated rod shape and are vertically arranged, and the material-homogenizing vertical rods (21) are arranged in a circumferential array relative to the bulk cone (2); the material-homogenizing vertical rod (21) corresponds to the inclined material-disturbing ring (3).

5. The twin screw extruder blending feed mechanism of claim 4, wherein: the frame ring (43) is annular, the inclined material sheets (41) are sheet-shaped and are arranged in a circumferential array relative to the central supporting rod (42), and the inclined material sheets (41) are obliquely arranged relative to the horizontal plane.

6. The twin screw extruder blending feed mechanism of claim 5, wherein: the oblique disturbance material sheet (41) is specifically positioned at a position close to the discharge hole (13); the central supporting rod (42) is vertically arranged and connected with the tip bottom of the bulk cargo cone (2).