A feeding hopper for a twin-screw extruder

Abstract

The utility model discloses a kind of feeding hopper for double-screw extruder, it is related to the technical field of double-screw extruder equipment, including feed bin, the outer periphery of the feed bin is equipped with several positioning rods, the outer wall of the positioning rod is equipped with limiting spring, the top of the positioning rod is equipped with filter screen, the top of the feed bin is equipped with support frame, the top of the support frame is equipped with rotary motor, the bottom of the rotary motor is equipped with feeding screw rod, the outer periphery of the feeding screw rod is equipped with clamping block.The utility model is equipped with feed bin, positioning rod, limiting spring and filter screen, the material to be conveyed is placed in filter screen, filtering and impurity removal are carried out, to avoid large-particle impurities into the screw and internal components are damaged, then pressure is applied to filter screen, the elasticity of limiting spring is passed through, filter screen carries out vertical reciprocating motion, thereby vibration is carried out, avoid material to be accumulated and jammed on filter screen surface, thereby improve feeding efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of twin-screw extruder equipment, specifically a feed hopper for a twin-screw extruder. Background Technology

[0002] Twin-screw extruders are widely used in the molding and processing of extruded products due to their excellent feeding, mixing and plasticizing, venting performance, and extrusion stability. The feed hopper, as a crucial component, significantly impacts the overall performance of the twin-screw extruder. Existing feed hoppers cannot filter and remove impurities from materials. Large solid particles entering the twin-screw conveyor cause wear on the screw and other internal components. Furthermore, after prolonged use, residual material adheres to the inner wall of the feed hopper, requiring manual disassembly and cleaning, which is cumbersome and affects processing efficiency. Therefore, a new feed hopper for twin-screw extruders is needed to address these issues.

[0003] The existing feed hopper for twin-screw extruders has problems such as being unable to filter and prevent clogging of materials during operation, and being inconvenient to clean the inner wall of the feed hopper. Therefore, there is an urgent need for a new feed hopper for twin-screw extruders. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a feed hopper for a twin-screw extruder to solve the problems that existing feed hoppers for twin-screw extruders cannot filter and prevent clogging of materials and are inconvenient to clean the inner wall of the feed hopper.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a feeding hopper for a twin-screw extruder, comprising a feeding bin, a plurality of positioning rods installed on the outer periphery of the feeding bin, limit springs installed on the outer walls of the positioning rods, a filter screen installed on the top of the positioning rods, a support frame installed on the top of the feeding bin, a rotary motor installed on the top of the support frame, a feeding screw installed at the bottom of the rotary motor, a locking block installed on the outer periphery of the feeding screw, a cleaning rod installed on the outer wall of the locking block, and a fixing sleeve installed on the outer wall of the feeding screw.

[0006] Preferably, the positioning rods are arranged in a circular array around the central axis of the feed hopper, and the positioning rods are movably connected to the feed hopper.

[0007] Preferably, the filter screen forms a telescopic structure with the feed hopper through a limiting spring, and the limiting spring is sleeved with the positioning rod.

[0008] Preferably, the clamping blocks are arranged in a circular array around the central axis of the feeding screw, and the clamping blocks are engaged with the cleaning rod.

[0009] Preferably, the outer wall of the cleaning rod is in close contact with the inner wall of the feeding hopper, and the fixing sleeve is threadedly connected to the feeding screw.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. This utility model uses a feeding bin, positioning rod, limiting spring, and filter screen to filter the material to be conveyed into the filter screen for filtration and impurity removal, preventing large particles from entering and damaging the screw and internal components. Then, pressure is applied to the filter screen, and the elastic force of the limiting spring causes the filter screen to move vertically back and forth, thereby vibrating and preventing material from accumulating and clogging on the surface of the filter screen, thus improving feeding efficiency.

[0012] 2. This utility model, through the setting of a support frame, a rotary motor, a feeding screw, a clamping block, a cleaning rod, and a fixing sleeve, drives the feeding screw to rotate and feed material by starting the rotary motor. When the feeding screw rotates, it will drive the cleaning rod to scrape the inner wall of the feeding hopper, preventing residual material from adhering to the inner wall of the feeding hopper. Furthermore, there is no need to manually disassemble the feeding hopper for cleaning, reducing downtime. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of the present utility model from the front view;

[0014] Figure 2 This is a side view of the structure of this utility model;

[0015] Figure 3 This is a structural schematic diagram showing the components surrounding the filter screen of this utility model disassembled;

[0016] Figure 4 This is a structural schematic diagram showing the components surrounding the cleaning rod of this utility model disassembled.

[0017] In the diagram: 1. Feed hopper; 2. Positioning rod; 3. Limiting spring; 4. Filter screen; 5. Support frame; 6. Rotary motor; 7. Feeding screw; 8. Clamping block; 9. Cleaning rod; 10. Fixing sleeve. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0019] The embodiments of this utility model will be described below based on its overall structure.

[0020] Please see Figures 1-4A feeding hopper for a twin-screw extruder includes a feeding bin 1. The feeding bin 1 is characterized by several positioning rods 2 installed on its outer periphery, limit springs 3 installed on the outer walls of the positioning rods 2, and filter screens 4 installed on the tops of the positioning rods 2. The positioning rods 2 are arranged in a circular array around the central axis of the feeding bin 1, and are movably connected to the feeding bin 1. The filter screen 4 forms a telescopic structure with the feeding bin 1 via the limit springs 3, and the limit springs 3 are sleeved with the positioning rods 2. Through the feeding bin 1, positioning rods 2, limit springs 3, and filter screen 4, the material to be conveyed is placed into the filter screen 4 for filtration and impurity removal, preventing large particles from entering and damaging the screw and internal components. Pressure is then applied to the filter screen 4, and the elastic force of the limit springs 3 causes the filter screen 4 to reciprocate vertically, thereby vibrating and preventing material accumulation and blockage on the surface of the filter screen 4, thus improving feeding efficiency.

[0021] Please see Figures 1-4 A feeding hopper for a twin-screw extruder includes a support frame 5 mounted on the top of the feeding hopper 1, a rotary motor 6 mounted on the top of the support frame 5, a feeding screw 7 mounted on the bottom of the rotary motor 6, a locking block 8 mounted on the outer periphery of the feeding screw 7, a cleaning rod 9 mounted on the outer wall of the locking block 8, and a fixing sleeve 10 mounted on the outer wall of the feeding screw 7. The locking blocks 8 are arranged in a circular array around the central axis of the feeding screw 7, and the locking blocks 8 are engaged with the cleaning rod 9. The outer wall of the cleaning rod 9 is connected to the feeding screw 7. The inner wall of the hopper 1 is tightly fitted, and the fixed sleeve 10 is threadedly connected to the feeding screw 7. Through the set support frame 5, rotary motor 6, feeding screw 7, clamping block 8, cleaning rod 9 and fixed sleeve 10, the rotary motor 6 is started to drive the feeding screw 7 to rotate and feed material. When the feeding screw 7 rotates, it will drive the cleaning rod 9 to scrape the inner wall of the feeding hopper 1, so as to prevent residual material from adhering to the inner wall of the feeding hopper 1. Moreover, there is no need to manually disassemble the feeding hopper 1 for cleaning, reducing downtime.

[0022] Working principle: In use, firstly, the cleaning rod 9 is sleeved with the feeding screw 7 and locked in place by the locking block 8. Then, the fixing sleeve 10 is threadedly connected to the feeding screw 7 to limit and fix the cleaning rod 9. Next, the filter screen 4 is sleeved on the top of the feeding screw 7. Then, the support frame 5 and the rotary motor 6 are installed. Then, the material to be conveyed is put into the filter screen 4 for filtration and impurity removal to prevent large particles from entering and damaging the screw and internal components. Then, pressure is applied to the filter screen 4, and the spring force of the limiting spring 3 keeps the filter screen 4 in place. The device vibrates by performing vertical reciprocating motion, which prevents material from accumulating and clogging on the surface of the filter screen 4, thereby improving feeding efficiency. At the same time, the rotary motor 6 is started to drive the feeding screw 7 to rotate and feed the material. When the feeding screw 7 rotates, it will drive the cleaning rod 9 to scrape the inner wall of the feeding bin 1, preventing residual material from adhering to the inner wall of the feeding bin 1. Moreover, there is no need to manually disassemble the feeding bin 1 for cleaning, reducing downtime. This completes the use of the device. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0023] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A feed hopper for a twin-screw extruder, comprising a feed bin (1), characterized in that: A plurality of positioning rods (2) are installed on the outer periphery of the feeding bin (1). Limiting springs (3) are installed on the outer wall of the positioning rods (2). A filter screen (4) is installed on the top of the positioning rods (2). A support frame (5) is installed on the top of the feeding bin (1). A rotary motor (6) is installed on the top of the support frame (5). A feeding screw (7) is installed at the bottom of the rotary motor (6). A locking block (8) is installed on the outer periphery of the feeding screw (7). A cleaning rod (9) is installed on the outer wall of the locking block (8). A fixing sleeve (10) is installed on the outer wall of the feeding screw (7).

2. The feed hopper for a twin-screw extruder according to claim 1, characterized in that: The positioning rods (2) are arranged in a circular array with the central axis of the feed bin (1) as the center, and the positioning rods (2) are movably connected to the feed bin (1).

3. The feed hopper for a twin-screw extruder according to claim 1, characterized in that: The filter screen (4) forms a telescopic structure with the feed bin (1) through the limiting spring (3), and the limiting spring (3) is sleeved with the positioning rod (2).

4. The feed hopper for a twin-screw extruder according to claim 1, characterized in that: The locking blocks (8) are arranged in a ring array with the central axis of the feeding screw (7) as the center, and the locking blocks (8) are engaged with the cleaning rod (9).

5. The feed hopper for a twin-screw extruder according to claim 1, characterized in that: The outer wall of the cleaning rod (9) is tightly fitted to the inner wall of the feeding bin (1), and the fixing sleeve (10) is threadedly connected to the feeding screw (7).

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