Material adding mechanism for double-screw extruder

Abstract

The utility model belongs to the technical field of double-screw extruders, and particularly relates to a material adding mechanism for a double-screw extruder, which comprises a main box body, a main frame body is inserted into the top of the main box body in a sliding manner, a filter screen is fixedly inserted into the bottom of the main frame body, a plurality of mounting blocks are fixedly connected to the edge of the top of the main frame body, and the mounting blocks are fixedly connected to the bottom of the main frame body. A supporting rod is fixedly connected to the top of the main box body, a penetrating opening corresponding to the supporting rod is formed in the mounting block, an arc-shaped clamping rod is rotationally connected to the mounting block through a pin shaft, a clamping groove corresponding to the arc-shaped clamping rod is formed in the supporting rod, and a discharging pipe is fixedly inserted into the inner bottom of the main box body; the discharging pipe is in threaded connection with a discharging valve, one end of the main box body is fixedly connected with a motor, and the output end of the motor is fixedly connected with a rotating rod. Through the arrangement of the stirring mechanism and the filtering mechanism, the feeding mechanism has certain premixing and filtering functions, so that the using effect of the material adding mechanism is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of twin-screw extruder technology, and in particular to a material adding mechanism for a twin-screw extruder. Background Technology

[0002] Twin-screw extruders were developed based on single-screw extruders. Twin-screw extruders mainly consist of several parts, such as a transmission device, a feeding device, a barrel, and a screw. Due to their good feeding performance, mixing and plasticizing performance, venting performance, and extrusion stability, they are now widely used in the molding and processing of extruded products.

[0003] However, the material addition mechanism of existing twin-screw extruders is relatively simple, lacking certain premixing and filtration mechanisms, which affects the effectiveness of the material addition mechanism. Utility Model Content

[0004] The purpose of this invention is to solve the problem that the material addition mechanism of the twin-screw extruder mentioned in the background art is relatively simple and lacks a certain premixing and filtering mechanism, and to propose a material addition mechanism for a twin-screw extruder.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A material feeding mechanism for a twin-screw extruder includes a main housing, a main frame slidably inserted into the top of the main housing, a filter screen fixedly inserted into the bottom of the main frame, multiple mounting blocks fixedly connected to the top edge of the main frame, a support rod fixedly connected to the top of the main housing, a through-hole corresponding to the support rod on each mounting block, an arc-shaped locking rod rotatably connected to each mounting block via a pin, a locking groove corresponding to the arc-shaped locking rod on the support rod, a discharge pipe fixedly inserted into the inner bottom of the main housing, a discharge valve threadedly connected to the discharge pipe, a motor fixedly connected to one end of the main housing, a rotating rod fixedly connected to the output end of the motor, a spiral stirring belt surrounding the end of the rotating rod inside the main housing, and an installation mechanism fixedly connected to the bottom of the main housing.

[0007] Preferably, an annular guide plate is connected to the inner bottom of the main frame.

[0008] Preferably, a plurality of limiting blocks corresponding to the main frame are fixedly connected to the inner wall of the main housing.

[0009] Preferably, a torsion spring is sleeved on the pin shaft, and the two ends of the torsion spring abut against the arc-shaped clamp and the mounting block, respectively.

[0010] Preferably, the mounting mechanism includes a fastening block, a screw is fixedly connected to the top of the fastening block, an mounting sleeve is threaded onto the screw, the top of the mounting sleeve is fixedly connected to the bottom of the main housing, and a fastening nut is threaded onto the screw.

[0011] Preferably, the fastening block is provided with multiple fastening ports.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In this invention, the addition of a stirring mechanism and a filtering mechanism enables the feeding mechanism to have certain premixing and filtering functions, thereby effectively improving the performance of the material adding mechanism.

[0014] 2. The arc-shaped clamping rod in this utility model can easily fix the mounting block. At the same time, the annular guide plate can facilitate the material to enter the inner bottom of the main box. The limiting block can provide limiting support for the main frame. The installation mechanism can facilitate the installation and connection of the main box to the feed port of the twin-screw extruder. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a material feeding mechanism for a twin-screw extruder proposed in this utility model;

[0016] Figure 2 for Figure 1 The structural diagram at point A in the diagram.

[0017] In the diagram: 1 Main housing, 2 Main frame, 3 Filter screen, 4 Mounting block, 5 Support rod, 6 Pin, 7 Arc-shaped clamp, 8 Discharge pipe, 9 Discharge valve, 10 Motor, 11 Rotating rod, 12 Spiral mixing belt, 13 Annular guide plate, 14 Limiting block, 15 Fastening block, 16 Screw, 17 Mounting sleeve, 18 Fastening nut. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Reference Figure 1-2A material feeding mechanism for a twin-screw extruder includes a main housing 1, a main frame 2 slidably inserted into the top of the main housing 1, a plurality of limiting blocks 14 corresponding to the main frame 2 fixedly connected to the inner wall of the main housing 1 to limit and support the main frame 2, an annular guide plate 13 connected to the inner bottom of the main frame 2 to facilitate the introduction of material into the filter screen 3, a filter screen 3 fixedly inserted into the bottom of the main frame 2 for filtering the material, and a plurality of mounting blocks 4 fixedly connected to the top edge of the main frame 2 for mounting the main frame 2.

[0020] In this embodiment, a support rod 5 is fixedly connected to the top of the main housing 1. The mounting block 4 is provided with a through hole corresponding to the support rod 5 for supporting the mounting block 4. An arc-shaped locking rod 7 is rotatably connected to the mounting block 4 via a pin 6. The support rod 5 is provided with a slot corresponding to the arc-shaped locking rod 7 for fixing the main frame 2. A torsion spring is sleeved on the pin 6. The two ends of the torsion spring abut against the arc-shaped locking rod 7 and the mounting block 4 respectively, providing a certain torsional support for the arc-shaped locking rod 7.

[0021] In this embodiment, a discharge pipe 8 is fixedly inserted into the bottom of the main housing 1 to facilitate the discharge of materials. A discharge valve 9 is threaded onto the discharge pipe 8 to control the discharge amount of materials. A motor 10 is fixedly connected to one end of the main housing 1 to drive the rotating rod 11 to rotate. The output end of the motor 10 is fixedly connected to the rotating rod 11. A spiral stirring belt 12 is wrapped around one end of the rotating rod 11 inside the main housing 1 to mix and stir the materials. An installation mechanism is fixedly connected to the bottom of the main housing 1 to facilitate the connection of the main housing 1 to a twin-screw extruder.

[0022] In this embodiment, the installation mechanism includes a fastening block 15, which has multiple fastening ports for fixing the main housing 1. A screw 16 is fixedly connected to the top of the fastening block 15, and an installation sleeve 17 is threaded onto the screw 16. The top of the installation sleeve 17 is fixedly connected to the bottom of the main housing 1. A fastening nut 18 is threaded onto the screw 16 for adjusting the distance between the fastening block 15 and the main housing 1.

[0023] In this embodiment, the starter motor 10 drives the rotating rod 11 to rotate, which in turn drives the spiral mixing belt 12 to rotate. Then, the material is introduced into the main frame 2. After being filtered by the filter screen 3 in the main frame 2, the material is stirred by the spiral mixing belt 12 and enters the discharge pipe 8. Then, the discharge valve 9 is opened to introduce the material into the twin-screw extruder.

[0024] In this embodiment, the addition of a stirring mechanism and a filtering mechanism enables the feeding mechanism to have certain pre-mixing and filtering functions, thereby effectively improving the performance of the material adding mechanism.

[0025] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A material adding mechanism for a twin-screw extruder, comprising a main casing (1), characterized in that: The top of the main box (1) is slidably inserted with a main frame (2), the bottom of the main frame (2) is fixedly inserted with a filter screen (3), the top edge of the main frame (2) is fixedly connected with a plurality of mounting blocks (4), the top of the main box (1) is fixedly connected with a support rod (5), the mounting block (4) is provided with a through hole corresponding to the support rod (5), the mounting block (4) is rotatably connected with an arc-shaped clamping rod (7) through a pin shaft (6), the support rod (5) is provided with a clamping groove corresponding to the arc-shaped clamping rod (7), the inner bottom of the main box (1) is fixedly inserted with a discharge pipe (8), the discharge pipe (8) is threadedly connected with a discharge valve (9), one end of the main box (1) is fixedly connected with a motor (10), the output end of the motor (10) is fixedly connected with a rotating rod (11), one end of the rotating rod (11) located in the main box (1) is surrounded by a spiral stirring belt (12), and the bottom of the main box (1) is fixedly connected with a mounting mechanism.

2. The material adding mechanism for a twin-screw extruder according to claim 1, characterized in that: The inner bottom of the main frame (2) is connected with an annular material guide plate (13).

3. The material adding mechanism for a twin-screw extruder according to claim 1, characterized in that: The inner wall of the main box (1) is fixedly connected with a plurality of limiting blocks (14) corresponding to the main frame (2).

4. The material adding mechanism for a twin-screw extruder according to claim 1, characterized in that: The pin shaft (6) is sleeved with a torsion spring, and the two ends of the torsion spring are respectively abutted with the arc-shaped clamping rod (7) and the mounting block (4).

5. The material adding mechanism for a twin-screw extruder according to claim 1, characterized in that: The mounting mechanism comprises a fastening block (15), the top of the fastening block (15) is fixedly connected with a screw rod (16), the screw rod (16) is threadedly sleeved with a mounting sleeve (17), the top of the mounting sleeve (17) is fixedly connected with the bottom of the main box (1), and the screw rod (16) is threadedly sleeved with a fastening nut (18).

6. A material adding mechanism for a twin-screw extruder according to claim 5, characterized in that: A plurality of fastening holes are formed in the fastening block (15).

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