Side feeding device of double-screw extruder

Abstract

The utility model discloses a double-screw extruder side feeding device, and relates to the field of double-screw extruders, the double-screw extruder side feeding device comprises an extrusion part, a bin body, an extrusion machine box, a connecting machine box and a motor, the top of the connecting machine box is provided with a connecting part, the top of the bin body is provided with a sealing part, and the connecting part comprises a material conveying disc; a plurality of clamping arms and positioning columns are arranged on the periphery of the material conveying disc, the sealing component comprises a connecting ring, a fixed sealing plate and a movable sealing plate are further arranged on the connecting ring, and a plurality of balls are further arranged on the face, close to the connecting ring, of the movable sealing plate. Through the arrangement of the movable sealing plate, materials melted under the influence of heating in the extrusion component are deposited in the conveying disc at the bottom, pollution to the inner wall of the bin body is avoided, the movable sealing plate is driven by the balls arranged on the side face of the movable sealing plate to rotate on the connecting ring, entering of outside air is reduced in the material extrusion process, and the material extrusion efficiency is improved. And the air proportion in the material and impurity pollution are reduced, so that the extrusion effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of twin-screw extruders, in particular to a side feeding device for a twin-screw extruder. Background Art

[0002] The working principle of an extruder is that the rotating screw feeds the material from a hopper into a barrel. The material is heated and plasticized by the shearing action of the screw in the barrel, and then extruded through a die to form the product. There are many types of extruders, including single-screw extruders, twin-screw extruders, and multi-screw extruders. Different types of extruders are suitable for different processing needs.

[0003] Twin-screw extruders are a type of continuous processing equipment widely used in the plastics, rubber, food, and pharmaceutical industries. They utilize two or more intermeshing screws rotating within a barrel to convey, mix, plasticize, and extrude materials. Due to their excellent mixing, plasticizing, and degassing properties, twin-screw extruders offer significant advantages in the production of high-performance composite materials, modified plastics, and biodegradable materials.

[0004] The existing twin-screw extruder needs to add materials through the hopper when it is in use, but the current hopper design is completely fixed on the extruder case. However, the twin-screw extruder needs to heat the material during use, which causes the material at the bottom of the hopper to be affected by the heat, thereby melting and sticking to the bottom of the hopper. The completely fixed hopper is difficult to disassemble and clean, resulting in a shortened service life of the machine and easily contaminating the next extruded material, resulting in a decrease in the quality of the extruded material. In addition, the top of the current feed port adopts an open design for convenient feeding, which results in a high proportion of air in the material and is easily contaminated by impurities, resulting in a decrease in the quality of the extruded material. The use of a closed hopper port will make the feeding steps more cumbersome and reduce efficiency. Utility Model Content

[0005] (1) Technical problems solved

[0006] In view of the above problems existing in the prior art, the utility model provides a side feeding device for a twin-screw extruder.

[0007] (2) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a side feeding device for a twin-screw extruder, comprising an extrusion component and a silo, wherein the bottom of the extrusion component is connected to an extrusion chassis, one end of the extrusion component is provided with a connecting chassis, the top of the connecting chassis is provided with a connecting component, the top of the connecting component is fixedly connected to the bottom of the silo, the top of the silo is provided with a sealing component, and one end of the connecting chassis is fixedly connected to a motor;

[0009] The connecting component includes a feed tray, a plurality of clamping arms and positioning columns are provided around the feed tray, the bottom of the feed tray is fixedly connected to the top of the connection chassis, one end of the positioning column is movably connected to one end of the feed tray, one end of the clamping arm is fixedly connected to the top of the positioning column, and the bottom of the clamping arm is fixedly connected to the top of the connection chassis;

[0010] The sealing component includes a connecting ring, the bottom of which is fixedly connected to the top of the warehouse body, and the connecting ring is also provided with a fixed sealing plate and a movable sealing plate. The adjacent surfaces of the movable sealing plate and the connecting ring are also provided with a number of balls, and the adjacent surfaces of the balls are movably connected to the adjacent surfaces of the inner wall of the connecting ring. The bottom of the movable sealing plate is movably connected to the top of the fixed sealing plate, and the side of the fixed sealing plate is fixedly connected to the adjacent surface of the inner wall of the connecting ring.

[0011] As a preferred solution of the twin-screw extruder side feeding device described in the utility model, a connecting rod and a knob are further provided at the top of the clamp arm, an inner cavity is opened at the top of the clamp arm, a spring is provided in the inner cavity at the top of the clamp arm, one end of the connecting rod is passed through the top of the positioning column, one end of the connecting rod is passed through the inner cavity at the top of the clamp arm and is fixedly connected to one end of the spring, and the end of the connecting rod away from the spring is fixedly connected to the adjacent end of the knob.

[0012] As a preferred solution of the side feeding device of the twin-screw extruder described in the utility model, through holes are provided around the feeding tray, and the bottom of the positioning column is movably connected to the inner wall of the through hole.

[0013] As a preferred solution of the twin-screw extruder side feeding device described in the utility model, a docking plate is also provided on the top of the feed tray, the bottom of the docking plate is fixedly connected to the top of the feed tray, and the top of the docking plate is fixedly connected to the bottom of the warehouse body.

[0014] As a preferred solution of the side feeding device of a twin-screw extruder described in the utility model, the fixed sealing plate and the movable sealing plate are arranged in a semicircular shape, and an annular groove for limiting the rolling of the ball is provided on the inner side wall of the connecting ring.

[0015] As a preferred solution of the side feeding device of a twin-screw extruder described in the utility model, the top of the movable sealing plate is also provided with an annular handle and a connecting strip, the bottom of the annular handle is fixedly connected to the top of the connecting strip, the bottom of the connecting strip is provided with a connecting block, the bottom of the connecting block is fixedly connected to the top of the movable sealing plate, and the top of the connecting block is fixedly connected to the bottom of the connecting strip.

[0016] (3) Beneficial effects

[0017] The utility model provides a side feeding device for a twin-screw extruder. It has the following beneficial effects:

[0018] 1. A feed tray is provided at the bottom of the silo body. The feed tray is fixed to the connecting chassis through the positioning column, and then the positioning column is clamped and fixed by the clamping arm to ensure that it will not be loose. Then the top of the feed tray is docked with the silo body to realize the installation of the silo body. When it needs to be disassembled, the clamping arm is opened, the positioning column is taken out and the feed tray is removed. The feed tray replaces the contact between the bottom of the silo body and the extrusion component, so that the material melted by the heating in the extrusion component is deposited in the feed tray at the bottom, so that only the feed tray needs to be replaced for cleaning and replacement, which avoids the contamination of the inner wall of the silo and reduces the contamination of the extruded material by the residual material of the previous processing.

[0019] 2. A sealing component is provided on the top of the silo body. The movable sealing plate is driven to rotate on the connecting ring by the ball bearing provided on the side of the movable sealing plate. When material is needed, the movable sealing plate is rotated to a position overlapping with the fixed sealing plate, so that the original position of the movable sealing plate becomes the feeding port on the top of the silo body. After the feeding is completed, the movable sealing plate is rotated to its original position to close the gap, so that the entry of outside air into the material during the extrusion process is reduced, the air proportion in the material is reduced, and impurity pollution is reduced, thereby improving the extrusion effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0022] Figure 2 It is a structural schematic diagram of the connecting component provided by the utility model.

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the clamping arm provided by the utility model.

[0024] Figure 4 It is a schematic diagram of the overall structure of the sealing component provided by the utility model.

[0025] Figure 5 This is a schematic diagram of the explosion structure of the sealing component provided by the utility model

[0026] In the figure, 1. extrusion component; 2. extrusion chassis; 3. connecting chassis; 4. motor; 5. bin body; 6. sealing component; 601. connecting ring; 602. ring handle; 603. fixed sealing plate; 604. connecting strip; 605. movable sealing plate; 606. ball bearing; 607. connecting block; 7. connecting component; 701. clamping arm; 702. positioning column; 703. feed tray; 704. docking tray; 705. knob; 706. connecting rod; 707. spring. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0028] Example 1

[0029] Reference Figure 1 、 Figure 2 and Figure 3 , which is the first embodiment of the present utility model, which provides a side feeding device for a twin-screw extruder, including an extrusion component 1 and a warehouse body 5. The bottom of the extrusion component 1 is connected to the extrusion chassis 2, one end of the extrusion component 1 is provided with a connecting chassis 3, the top of the connecting chassis 3 is provided with a connecting component 7, the top of the connecting component 7 is fixedly connected to the bottom of the warehouse body 5, the top of the warehouse body 5 is provided with a sealing component 6, one end of the connecting chassis 3 is fixedly connected to the motor 4, the connecting component 7, including a feed tray 703, a plurality of clamping arms 701 and positioning columns 702 are provided around the feed tray 703, the bottom of the feed tray 703 is fixedly connected to the top of the connecting chassis 3, one end of the positioning column 702 is movably connected to one end of the feed tray 703, one end of the clamping arm 701 is fixedly connected to the top of the positioning column 702, and the bottom of the clamping arm 701 is fixedly connected to the top of the connecting chassis 3.

[0030] Specifically, a connecting rod 706 and a knob 705 are also provided at the top of the clamping arm 701. An inner cavity is opened at the top of the clamping arm 701, and a spring 707 is provided in the inner cavity at the top of the clamping arm 701. One end of the connecting rod 706 is passed through the top of the positioning column 702, and one end of the connecting rod 706 is passed through the inner cavity at the top of the clamping arm 701 and is fixedly connected to one end of the spring 707. The end of the connecting rod 706 away from the spring 707 is fixedly connected to the adjacent end of the knob 705. Through holes are provided around the feed tray 703, and the bottom of the positioning column 702 is movably connected to the inner wall of the through hole. A docking tray 704 is also provided on the top of the feed tray 703. The bottom of the docking tray 704 is fixedly connected to the top of the feed tray 703, and the top of the docking tray 704 is fixedly connected to the bottom of the warehouse body 5.

[0031] Furthermore, a feed tray 703 is provided at the bottom of the silo body 5, and the feed tray 703 is fixed to the connecting chassis 3 by means of the positioning post 702, and then the positioning post 702 is clamped and fixed by the clamping arm 701 to ensure that it will not be loose. Then, the top of the feed tray 703 is docked with the silo body 5 to achieve the installation of the silo body 5. When it needs to be disassembled, the clamping arm 701 is opened, the positioning post 702 is taken out, and the feed tray 703 is removed. The feed tray 703 replaces the contact between the bottom of the silo body 5 and the extrusion component 1, so that the material melted by the heating in the extrusion component 1 is deposited in the feed tray 703 at the bottom, so that only the feed tray 703 needs to be replaced for cleaning and replacement, thereby avoiding contamination of the inner wall of the silo body 5 and reducing the contamination of the extruded material by the residual material of the previous processing.

[0032] Example 2

[0033] Reference Figure 1 、 Figure 4 and Figure 5 , which is the second embodiment of the present utility model, and this embodiment is based on the previous embodiment. The sealing component 6 includes a connecting ring 601. The bottom of the connecting ring 601 is fixedly connected to the top of the warehouse body 5. The connecting ring 601 is also provided with a fixed sealing plate 603 and a movable sealing plate 605. The adjacent surfaces of the movable sealing plate 605 and the connecting ring 601 are also provided with a number of balls 606. The adjacent surfaces of the balls 606 are movably connected to the adjacent surfaces of the inner side walls of the connecting ring 601. The bottom of the movable sealing plate 605 is movably connected to the top of the fixed sealing plate 603, and the side surfaces of the fixed sealing plate 603 are fixedly connected to the adjacent surfaces of the inner side walls of the connecting ring 601.

[0034] Specifically, the fixed sealing plate 603 and the movable sealing plate 605 are arranged in a semicircular shape, and an annular groove for limiting the rolling of the ball 606 is provided on the inner wall of the connecting ring 601. The top of the movable sealing plate 605 is also provided with an annular handle 602 and a connecting strip 604. The bottom of the annular handle 602 is fixedly connected to the top of the connecting strip 604. The bottom of the connecting strip 604 is provided with a connecting block 607. The bottom of the connecting block 607 is fixedly connected to the top of the movable sealing plate 605, and the top of the connecting block 607 is fixedly connected to the bottom of the connecting strip 604.

[0035] Furthermore, a sealing component 6 is provided on the top of the silo body 5, and the movable sealing plate 605 is driven to rotate on the connecting ring 601 by the ball 606 provided on the side of the movable sealing plate 605. When material is needed, the movable sealing plate 605 is rotated to a position overlapping with the fixed sealing plate 603, so that the original position of the movable sealing plate 605 becomes the feeding port on the top of the silo body 5. After the feeding is completed, the movable sealing plate 605 is rotated to its original position to close the gap, thereby reducing the entry of external air during the extrusion process of the material, reducing the air proportion in the material and reducing impurity pollution, thereby improving the extrusion effect.

[0036] Working principle: When it is necessary to add material, turn the annular handle 602 on the top, and through the several balls 606 set on the side of the movable sealing plate 605 and the annular groove set on the inner wall of the connecting ring 601, the annular handle 602 drives the movable sealing plate 605 to rotate, thereby opening the gap for adding material. After the feeding is completed, continue to rotate the movable sealing plate 605 to close the gap, thereby preventing the entry of air and impurities, and then turn on the motor 4 to allow the extrusion component 1 to start the extrusion operation. During the extrusion operation, the material affected by the heat of the extrusion component 1 is deposited in the feed tray 703. After the extrusion operation is completed, rotate the knob 705 to drive the connecting rod 706 to rotate the spring 707, thereby loosening the fixation of the clamping arm 701 to the positioning column 702, and then remove the warehouse body 5, docking plate 704 and feed tray 703 in order from top to bottom, and then replace the new feed tray 703 to continue the extrusion operation. The removed feed tray 703 is cleaned and recycled, ultimately avoiding the residual contamination of the inner wall of the warehouse body 5 by the melted material.

[0037] It should be noted that, in this document, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

Claims

1. A side feeding device for a twin-screw extruder, comprising an extrusion component (1) and a bin (5), characterized in that: The bottom of the extrusion component (1) is connected to an extrusion chassis (2), one end of the extrusion component (1) is provided with a connection chassis (3), the top of the connection chassis (3) is provided with a connection component (7), the top of the connection component (7) is fixedly connected to the bottom of the silo (5), the top of the silo (5) is provided with a sealing component (6), and one end of the connection chassis (3) is fixedly connected to a motor (4); The connecting component (7) includes a feed tray (703), wherein a plurality of clamping arms (701) and positioning columns (702) are arranged around the feed tray (703), the bottom of the feed tray (703) is fixedly connected to the top of the connection chassis (3), one end of the positioning column (702) is movably connected to one end of the feed tray (703), one end of the clamping arm (701) is fixedly connected to the top of the positioning column (702), and the bottom of the clamping arm (701) is fixedly connected to the top of the connection chassis (3); The sealing component (6) includes a connecting ring (601), the bottom of which is fixedly connected to the top of the warehouse body (5), and the connecting ring (601) is also provided with a fixed sealing plate (603) and a movable sealing plate (605), and the adjacent surfaces of the movable sealing plate (605) and the connecting ring (601) are also provided with a plurality of balls (606), the adjacent surfaces of the balls (606) are movably connected to the adjacent surfaces of the inner side wall of the connecting ring (601), the bottom of the movable sealing plate (605) is movably connected to the top of the fixed sealing plate (603), and the side surface of the fixed sealing plate (603) is fixedly connected to the adjacent surface of the inner side wall of the connecting ring (601).

2. A twin-screw extruder side feeding device according to claim 1, characterized in that: The top of the clamp arm (701) is also provided with a connecting rod (706) and a knob (705), the top of the clamp arm (701) is provided with an inner cavity, and a spring (707) is provided in the inner cavity of the top of the clamp arm (701), one end of the connecting rod (706) is passed through the top of the positioning column (702), one end of the connecting rod (706) is passed through the inner cavity of the top of the clamp arm (701) and is fixedly connected to one end of the spring (707), and the end of the connecting rod (706) away from the spring (707) is fixedly connected to the adjacent end of the knob (705).

3. A twin-screw extruder side feeding device according to claim 2, characterized in that: The feeding tray (703) is provided with through holes around its periphery, and the bottom of the positioning column (702) is movably connected to the inner wall of the through hole.

4. A side feeding device for a twin-screw extruder according to claim 3, characterized in that: A docking tray (704) is also provided on the top of the feed tray (703), the bottom of the docking tray (704) is fixedly connected to the top of the feed tray (703), and the top of the docking tray (704) is fixedly connected to the bottom of the warehouse body (5).

5. A side feeding device for a twin-screw extruder according to claim 4, characterized in that: The fixed sealing plate (603) and the movable sealing plate (605) are arranged in a semicircular shape, and an annular groove for the rolling of the limiting ball (606) is provided on the inner side wall of the connecting ring (601).

6. A side feeding device for a twin-screw extruder according to claim 5, characterized in that: The top of the movable sealing plate (605) is also provided with an annular handle (602) and a connecting strip (604), the bottom of the annular handle (602) is fixedly connected to the top of the connecting strip (604), the bottom of the connecting strip (604) is provided with a connecting block (607), the bottom of the connecting block (607) is fixedly connected to the top of the movable sealing plate (605), and the top of the connecting block (607) is fixedly connected to the bottom of the connecting strip (604).

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