A twin screw extruder with a pressure alarm mechanism
By introducing a pressure alarm mechanism and a motor-driven rotation system into the twin-screw extruder, the problems of noise pollution and equipment blockage have been solved, and uniform material conveying and mixing have been achieved, thus improving production efficiency.
Patent Information
- Application Number
- CN202521440262.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-10
- Publication Date
- 2026-07-31
- Estimated Expiration
- 2035-07-10
AI Technical Summary
Existing twin-screw extruders generate noise during the feeding process due to impacts, which can harm the health of workers and cause equipment blockages due to material accumulation.
A twin-screw extruder with a pressure alarm mechanism was designed. The motor drives the rotating rod and the actuating rod to prevent material accumulation. The uniform conveying and mixing of materials is achieved through the cooperation of the stirring rod and the auger.
It effectively reduces noise pollution, prevents equipment blockage, and improves material mixing and processing efficiency.
Smart Images
Figure CN224576135U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of extruder technology, and in particular to a twin-screw extruder with a pressure alarm mechanism. Background Technology
[0002] A twin-screw extruder is a high-efficiency plastic processing equipment with large capacity and high production speed. It can quickly complete the production of large quantities of plastic products, improving production efficiency. It achieves the heating, melting, mixing and extrusion of plastic materials by rotating two intermeshing screws inside the barrel.
[0003] Announcement No. CN222987537U discloses a novel twin-screw extruder. This extruder utilizes a blower to extract waste gas generated inside the extruder body via a connecting pipe. The waste gas is then transported through a conveying pipe to an activated carbon filter element inside the casing for filtration and purification. Pressing a button activates a rotating block, which in turn drives a rotating frame. This frame causes an insert block to slide and compress a spring outside a slide bar. The spring generates elastic force, and simultaneously, the insert block slides out from inside a baffle. By grasping the telescopic tube and removing the baffle, the activated carbon filter element can be retrieved. This design enables the processing of waste gas during manufacturing, facilitates quick and easy replacement of the activated carbon filter element, and prevents the filter element from deteriorating with prolonged use, thus reducing its filtration efficiency and preventing environmental pollution from discharged waste gas.
[0004] However, during the implementation of this device, the feeding port vibrates due to the striking method, causing the material to fall out quickly. Furthermore, the striking of the object generates noise, resulting in workers working in noise every day, which may lead to ear congestion, tinnitus, hearing loss, and other problems, causing multifaceted and far-reaching harm to people's physical and mental health. To address this issue, a twin-screw extruder with a pressure alarm mechanism has been proposed. Utility Model Content
[0005] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a twin-screw extruder with a pressure alarm mechanism, which can solve the problems in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a twin-screw extruder with a pressure alarm mechanism, comprising a base, a twin-screw extruder body disposed above the base, a connecting pipe fixedly connected to the surface of the twin-screw extruder body, a feed hopper fixedly connected to the surface of the connecting pipe, the feed hopper being conical in shape, a fixed frame fixedly connected to the upper end of the feed hopper, a rotating rod rotatably connected inside the fixed frame, a connecting rod fixedly connected to the surface of the rotating rod, a actuating rod fixedly connected to the end of the connecting rod away from the rotating rod, the surface of the actuating rod contacting the inner wall of the feed hopper, a motor fixedly connected to the surface of the fixed frame, the output end of the motor penetrating the fixed frame, the output end of the motor rotatably connected to the interior of the fixed frame, and the output end of the motor fixedly connected to the rotating rod.
[0007] Preferably, an alarm is provided on the surface of the twin-threaded extruder body, and a pressure sensor is provided inside the twin-threaded extruder body.
[0008] Preferably, a fixed shell is fixedly connected inside the feed hopper, and the surface of the fixed shell has grooves arranged in a circular pattern. An installation block is fixedly connected inside the connecting pipe. The interior of the installation block is conical, and the surface of the installation block is fixedly connected to the fixed shell.
[0009] Preferably, the rotating rod extends through the fixed shell into the interior of the mounting block, and the surface of the rotating rod is rotatably connected to the interior of the fixed shell.
[0010] Preferably, the rotating rod is fixedly connected to an auger on the surface inside the mounting block, and the auger is in contact with the inner wall of the mounting block.
[0011] Preferably, a rotating block is fixedly connected to the surface of the rotating rod. The rotating block is conical in shape, and a grinding protrusion is fixedly connected to the surface of the rotating block. Similarly, a grinding protrusion is fixedly connected to the inner wall of the mounting block.
[0012] Preferably, a fixing block is fixedly connected to the upper end of the rotating block, and the fixing block is also tapered.
[0013] Preferably, the surface of the actuating rod is fixedly connected with stirring rods arranged at equal intervals.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] (1) The twin-screw extruder with pressure alarm mechanism starts the motor, which drives the connecting rod, the agitator rod and the stirring rod to rotate, thereby agitating the material accumulated inside the feed hopper, thus avoiding the accumulation of material and allowing the material to move down for processing. At the same time, the stirring rod agitates and mixes the material, further improving the mixing effect of the material. Attached Figure Description
[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0017] Figure 1 This is a schematic diagram of the surface structure of the main body of the double-threaded extruder of this utility model;
[0018] Figure 2 This is a schematic diagram of the internal structure of the feed hopper of this utility model;
[0019] Figure 3 This is a schematic diagram of the internal structure of the fixing shell of this utility model;
[0020] Figure 4 This is a schematic diagram of the fixed block and rotating block of this utility model.
[0021] Reference numerals in the attached drawings: 1. Base; 2. Main body of the double threaded rod extruder; 3. Alarm; 4. Feed hopper; 5. Connecting pipe; 6. Fixing frame; 7. Motor; 8. Rotating rod; 9. Connecting rod; 10. Actuating rod; 11. Tilting rod; 12. Fixing shell; 13. Groove; 14. Mounting block; 15. Fixing block; 16. Rotating block; 17. Screwdriver; 18. Grinding protrusion. Detailed Implementation
[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0023] Please see Figure 1-4This utility model provides a technical solution: a twin-screw extruder with a pressure alarm mechanism, including a base 1, a twin-screw extruder body 2 arranged above the base 1, a connecting pipe 5 fixedly connected to the surface of the twin-screw extruder body 2, a feed hopper 4 fixedly connected to the surface of the connecting pipe 5, and the feed hopper 4 is conical. A fixed frame 6 is fixedly connected to the upper end of the feed hopper 4, a rotating rod 8 is rotatably connected inside the fixed frame 6, a connecting rod 9 is fixedly connected to the surface of the rotating rod 8, and a toggle rod 10 is fixedly connected to the end of the connecting rod 9 away from the rotating rod 8. The surface of the toggle rod 10 contacts the inner wall of the feed hopper 4. A motor 7 is fixedly connected to the surface of the fixed frame 6, the output end of the motor 7 passes through the fixed frame 6, the output end of the motor 7 is rotatably connected to the inside of the fixed frame 6, and the output end of the motor 7 is fixedly connected to the rotating rod 8.
[0024] An alarm 3 is installed on the surface of the twin screw extruder body 2, and a pressure sensor is installed inside the twin screw extruder body 2. In current use of the twin screw extruder body 2, a pressure sensor is installed on the twin screw extruder body 2 to detect the condition of the twin screw extruder body 2, and the sensor is connected to the alarm 3. When the pressure inside the twin screw extruder body 2 exceeds a predetermined threshold, the pressure sensor will activate the alarm 3, and the alarm 3 will sound an alarm to remind the staff. The alarm to the staff through the sensor and the alarm 3 is a known technology, so it will not be described further.
[0025] A fixed shell 12 is fixedly connected inside the feed hopper 4. The surface of the fixed shell 12 has grooves 13 arranged in a circular pattern. An installation block 14 is fixedly connected inside the connecting pipe 5. The interior of the installation block 14 is conical. The surface of the installation block 14 is fixedly connected to the fixed shell 12. A rotating rod 8 passes through the fixed shell 12 to the interior of the installation block 14. The surface of the rotating rod 8 is rotatably connected to the interior of the fixed shell 12. An auger 17 is fixedly connected to the surface of the rotating rod 8 inside the installation block 14. The auger 17 is in contact with the inner wall of the installation block 14.
[0026] A rotating block 16 is fixedly connected to the surface of the rotating rod 8. The rotating block 16 is conical and a grinding protrusion 18 is fixedly connected to the surface of the rotating block 16. A grinding protrusion 18 is also fixedly connected to the inner wall of the mounting block 14.
[0027] A fixing block 15 is fixedly connected to the upper end of the rotating block 16. The fixing block 15 is also cone-shaped. The fixing block 15 covers the upper end of the rotating block 16, thereby preventing the raw materials from accumulating on the rotating block 16 and allowing the raw materials to enter between the rotating block 16 and the mounting block 14.
[0028] The surface of the actuating rod 10 is fixedly connected with equidistantly arranged stirring rods 11. By setting the stirring rods 11, the material is stirred and mixed when the actuating rod 10 moves, which further improves the melting and extrusion effect of the material.
[0029] Working principle: When materials need to be processed, the materials are poured into the inside of the feed hopper 4. At the same time, the operator starts the motor 7. The output end of the motor 7 drives the rotating rod 8 to rotate. The rotating rod 8 drives the connecting rod 9 to rotate. The connecting rod 9 drives the actuating rod 10 to rotate. The rotation of the actuating rod 10 actuates the inside of the feed hopper 4, causing the materials to slide downwards, thereby avoiding the situation where the materials accumulate inside the feed hopper 4 and do not move downwards.
[0030] When the rotating rod 8 rotates, it drives the fixed block 15 and the rotating block 16 to rotate. The material being moved enters the interior of the fixed shell 12 through the groove 13. With the conical setting inside the mounting block 14, the material enters between the mounting block 14 and the rotating block 16. The rotating block 16 drives the grinding protrusions 18 on its surface to rotate. The grinding protrusions 18 on the rotating block 16 then contact the grinding protrusions 18 on the mounting block 14, thereby grinding and crushing the material. The setting of small particles makes it easier for the material in the body 2 of the twin screw extruder to be heated and extruded. This reduces the possibility of blockage in the body 2 of the twin screw extruder due to uneven heating.
[0031] When the rotating rod 8 rotates, it drives the auger 17 to rotate, which in turn conveys the ground material. When processing is no longer needed, the motor 7 is stopped, and the rotating rod 8 stops rotating, thus stopping the auger 17 and trapping the remaining material, preventing it from flowing downwards. At the same time, the design of the upper structure prevents the material from being conveyed into the body 2 of the twin screw extruder all at once, avoiding the situation where too much material is introduced and causes the body 2 of the twin screw extruder to become clogged.
[0032] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A twin-screw extruder with a pressure alarm mechanism comprising a base (1), characterized in that: A double-threaded extruder body (2) is provided above the base (1). A connecting pipe (5) is fixedly connected to the surface of the double-threaded extruder body (2). A feed hopper (4) is fixedly connected to the surface of the connecting pipe (5). The feed hopper (4) is conical. A fixed frame (6) is fixedly connected to the upper end of the feed hopper (4). A rotating rod (8) is rotatably connected inside the fixed frame (6). A connecting rod (9) is fixedly connected to the surface of the rotating rod (8). A toggle rod (10) is fixedly connected to the end of the connecting rod (9) away from the rotating rod (8). The surface of the toggle rod (10) is in contact with the inner wall of the feed hopper (4). A motor (7) is fixedly connected to the surface of the fixed frame (6). The output end of the motor (7) passes through the fixed frame (6). The output end of the motor (7) is rotatably connected to the inside of the fixed frame (6). The output end of the motor (7) is fixedly connected to the rotating rod (8).
2. A twin screw extruder with a pressure alarm mechanism according to claim 1, characterized in that: An alarm (3) is provided on the surface of the twin screw extruder body (2), and a pressure sensor is provided inside the twin screw extruder body (2).
3. A twin screw extruder with a pressure alarm mechanism according to claim 2, characterized in that: The feed hopper (4) is fixedly connected to a fixed shell (12), and the surface of the fixed shell (12) is provided with grooves (13) arranged in a circular pattern. The connecting pipe (5) is fixedly connected to an installation block (14), the interior of which is conical, and the surface of the installation block (14) is fixedly connected to the fixed shell (12).
4. A twin screw extruder with a pressure alarm mechanism according to claim 3, characterized in that: The rotating rod (8) passes through the fixed shell (12) to the interior of the mounting block (14), and the surface of the rotating rod (8) is rotatably connected to the interior of the fixed shell (12).
5. A twin screw extruder with a pressure alarm mechanism according to claim 4, characterized in that: The rotating rod (8) is fixedly connected to an auger (17) on the surface inside the mounting block (14), and the auger (17) is in contact with the inner wall of the mounting block (14).
6. A twin screw extruder with a pressure alarm mechanism according to claim 5, characterized in that: A rotating block (16) is fixedly connected to the surface of the rotating rod (8). The rotating block (16) is conical. A grinding protrusion (18) is fixedly connected to the surface of the rotating block (16). A grinding protrusion (18) is also fixedly connected to the inner wall of the mounting block (14).
7. A twin screw extruder with a pressure alarm mechanism according to claim 6, characterized in that: The upper end of the rotating block (16) is fixedly connected to a fixing block (15), which is also conical in shape.
8. A twin screw extruder with a pressure alarm mechanism according to claim 7, characterized in that: The surface of the actuating rod (10) is fixedly connected with stirring rods (11) arranged at equal intervals.