Anti-blocking conical extruder feeding device for PVC (polyvinyl chloride) pipe production

Abstract

The utility model belongs to the technical field of PVC (polyvinyl chloride) pipe production, and particularly relates to an anti-blocking conical extruder feeding device for PVC pipe production, which comprises an extruder main body, one side of the extruder main body is fixedly connected with a discharging pipe, the top of the extruder main body is fixedly connected with a feeding hopper, and the other side of the extruder main body is fixedly connected with a discharging pipe. A supporting rod is fixedly connected to the inner wall of the top of the feeding hopper, a variable-speed motor is fixedly connected to the upper surface of the supporting rod, a stirring rod is fixedly connected to the output end of the variable-speed motor, and one end of the stirring rod is rotationally connected to the interior of the supporting rod; when the connecting frame, the bristles and the scraping plate rotate, PVC pipe production raw materials attached to the inner wall of the feeding hopper can be scraped off, the raw material caking probability is reduced, and therefore the situation that the feeding hopper is blocked by large raw materials is avoided, and the situation that due to the fact that the raw materials are attached to the inner wall of the feeding hopper, the thickness of the inner wall of the feeding hopper is increased, the circulation space of the feeding hopper is reduced is avoided. And therefore, the feeding efficiency of PVC pipe production raw materials can be improved.

Description

Technical Field

[0001] This utility model belongs to the field of PVC pipe production technology, specifically a conical extruder feeding device for anti-clogging material in PVC pipe production. Background Technology

[0002] PE pipe, also known as polyethylene pipe, is one of the most common types of pipes. It has advantages such as low-temperature impact resistance, chemical corrosion resistance, and wear resistance. It is widely used in water supply, drainage, heating, gas supply, agricultural irrigation, water conservancy projects, and various industrial installations. In the production and processing of PE pipe, a plastic extruder is generally used to process and shape the PE pipe.

[0003] In PVC pipe production, conical extruders are often used for material melting and extrusion molding. Traditional feeding devices are prone to material accumulation, bridging or blockage due to unreasonable structural design, which affects production efficiency. The blockage problem is particularly prominent when processing high-viscosity PVC mixtures, requiring frequent shutdowns for cleaning and increasing production costs. Some devices rely on vibration for anti-blockage design, but the structure is simple, relying only on the stirring fan blades to move the raw material to achieve the purpose of preventing blockage.

[0004] However, existing feeding devices still have some problems. Hot air inside the extruder body flows back into the feed hopper, causing the raw materials in the feed hopper to clump together due to heat. The raw materials are also prone to adhering to the inner wall of the feed hopper. Larger pieces of raw materials can easily cause blockage of the feed hopper. The raw materials adhering to the inner wall of the feed hopper reduce the flow space of the feed hopper, thereby affecting the feeding efficiency. Therefore, in order to address the above problems, a conical extruder feeding device for anti-clogging material in PVC pipe production is proposed. Utility Model Content

[0005] To overcome the shortcomings of existing technologies and address the problems of existing equipment, this utility model proposes a conical extruder feeding device for anti-clogging material in PVC pipe production.

[0006] The technical solution adopted by this utility model to solve its technical problem is a conical extruder feeding device for anti-clogging material in PVC pipe production, comprising: an extruder body, a discharge pipe fixedly connected to one side of the extruder body, a feed hopper fixedly connected to the top of the extruder body, a support rod fixedly connected to the inner wall of the top of the feed hopper, a variable speed motor fixedly connected to the upper surface of the support rod, a stirring rod fixedly connected to the output end of the variable speed motor, one end of the stirring rod being rotatably connected to the inside of the support rod, and one end of the stirring rod extending into the inside of the feed hopper, symmetrically formed receiving grooves inside the stirring rod, and a spring fixedly connected to one side of the receiving groove. When the variable speed motor is running, the rotation speed of the stirring rod is adjusted by an external control box, thereby changing the range of agitation of the connecting frame.

[0007] Preferably, a limiting groove is formed inside the storage slot, and a limiting block is slidably connected inside the limiting groove. One end of the spring is fixedly connected to a connecting frame, and the limiting block is located inside the limiting groove, thereby limiting the movement range of the limiting block and preventing the connecting frame from falling off.

[0008] Preferably, the connecting frame is slidably connected inside the storage slot, the connecting frame is fixedly connected to one side of the limiting block, a scraper is fixedly connected to one side of the connecting frame, and a brush is fixedly connected to one side of the connecting frame. When cleaning the feed hopper, the brush and scraper are driven by the stirring rod to scrape off the raw materials adhering to the inner wall of the feed hopper, thereby improving the cleaning efficiency of the feed hopper.

[0009] Preferably, a drive motor is installed on one side of the extruder body, and a screw is fixedly connected to the output end of the drive motor. A jacket is installed inside the extruder body, and a heating plate is installed inside the jacket. A power cord is connected to the heating plate. After the raw material enters the extruder body, it is heated and melted by the heating plate. Then, the drive motor is started to drive the screw to rotate, thereby extruding the raw material.

[0010] Preferably, one end of the stirring rod is connected to a connecting rod, and a crushing blade is fixedly connected to the outer surface of the connecting rod. The stirring rod drives the connecting rod and the crushing blade to rotate, which can break up the agglomerated raw materials after heating.

[0011] Preferably, the device is connected to an external control box, which is used to control the start and stop of the variable speed motor and the heating plate. By controlling the operation of the variable speed motor and the heating plate through the external control box, the ease of use of the device is improved.

[0012] The advantages of this utility model are: when the connecting frame, brush and scraper rotate, they can scrape off the PVC pipe production raw materials attached to the inner wall of the feed hopper, and reduce the probability of raw material agglomeration, thereby avoiding large pieces of raw material from clogging the feed hopper, and avoiding the increase in the thickness of the inner wall of the feed hopper due to raw material adhering to the inner wall, thereby reducing the flow space of the feed hopper, and thus improving the feeding efficiency of PVC pipe production raw materials.

[0013] When the stirring rod of this invention rotates, the connecting rod and the crushing blade at its tail end rotate synchronously. When the connecting rod and the crushing blade rotate, they can crush the larger particles of PVC raw material that have agglomerated after being heated, thereby preventing the larger particles of PVC raw material from entering the extruder body and thus avoiding affecting the production quality of PVC pipes. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure;

[0016] Figure 2 This is a schematic cross-sectional view of the extruder body;

[0017] Figure 3 This is a schematic diagram of the cross-section of the feed hopper;

[0018] Figure 4 This is a schematic diagram of the cross-section of the stirring rod;

[0019] Figure 5 This is a schematic diagram of the combined structure of the connecting frame and the scraper.

[0020] In the diagram: 1. Extruder body; 2. Discharge pipe; 3. Feed hopper; 4. Support rod; 5. Variable speed motor; 6. Drive motor; 7. Screw; 8. Stirring rod; 9. Collection trough; 10. Spring; 11. Limiting groove; 12. Limiting block; 13. Connecting frame; 14. Scraper; 15. Brush bristles; 16. Connecting rod; 17. Crushing blade; 18. Heating plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0022] Please see Figure 1-5As shown, a conical extruder feeding device for anti-clogging material in PVC pipe production includes: an extruder body 1, a discharge pipe 2 fixedly connected to one side of the extruder body 1, a feed hopper 3 fixedly connected to the top of the extruder body 1, a support rod 4 fixedly connected to the inner wall of the top of the feed hopper 3, a variable speed motor 5 fixedly connected to the upper surface of the support rod 4, a stirring rod 8 fixedly connected to the output end of the variable speed motor 5, one end of the stirring rod 8 rotatably connected to the inside of the support rod 4, and one end of the stirring rod 8 extending into the inside of the feed hopper 3, a symmetrically arranged collection groove 9 inside the stirring rod 8, a spring 10 fixedly connected to one side of the inside of the collection groove 9, a limiting groove 11 opened inside the collection groove 9, a limiting block 12 slidably connected inside the limiting groove 11, a connecting frame 13 fixedly connected to one end of the spring 10, the connecting frame 13 slidably connected inside the collection groove 9, the connecting frame 13 fixedly connected to one side of the limiting block 12, a scraper 14 fixedly connected to one side of the connecting frame 13, and a brush bristle 15 fixedly connected to one side of the connecting frame 13.

[0023] In the production and processing of PE pipes, conical extruders are commonly used for material melting and extrusion molding. However, due to unreasonable structural design, these extruders are prone to material accumulation, bridging, or blockage, affecting production efficiency. Therefore, a conical extruder feeding device for PVC pipe production is proposed to prevent material blockage. In actual use, the variable speed motor 5 is started via an external control box, and the rotation speed of the output end of the variable speed motor 5 is controlled. The operation of the variable speed motor 5 drives the stirring rod 8 to rotate, and the resulting centrifugal force throws the connecting frame 13 outward, causing the limit blocks 12 on both sides to slide along the internal limit groove 11, while the spring 10 is stretched. When the rotation speed is high, the connecting frame 13 extends further from the receiving groove 9, allowing the bristles 15 and scraper 14 to come into contact with the inside of the feeding hopper 3, thus increasing the stirring area and the fluidity of the raw material in the feeding hopper 3. Furthermore, the hot air in the extruder body 1 flows back into the feeding hopper 3, causing the raw material in the feeding hopper 3 to agglomerate due to heat. The material tends to adhere to the inner wall of the feed hopper 3. When the connecting frame 13, brush 15, and scraper 14 rotate, they can scrape off the PVC pipe production raw materials adhering to the inner wall of the feed hopper 3, reducing the probability of raw material agglomeration. This avoids raw material agglomeration and prevents the flow space of the feed hopper 3 from being reduced due to raw material adhering to the inner wall of the feed hopper 3, thereby improving the feeding efficiency of the extruder. At the same time, it can improve the cleaning efficiency and cleaning quality when cleaning the feed hopper 3. When the speed of the variable speed motor 5 is slower, the rotation speed of the stirring rod 8 slows down, and the centrifugal force generated is reduced accordingly. As a result, the tension on the spring 10 is reduced, pulling the connecting frame 13 back into the storage tank 9, shortening the extension length of the connecting frame 13, and changing the stirring range. During the feeding process, the rotation speed of the output end of the variable speed motor 5 is controlled by the external control box, thereby avoiding material accumulation, bridging, or blockage due to uneven stirring throughout the feeding process, and thus improving the feeding efficiency of PVC pipe production raw materials.

[0024] Please see Figure 1-5 As shown, a drive motor 6 is installed on one side of the extruder body 1. A screw 7 is fixedly connected to the output end of the drive motor 6. An interlayer is installed inside the extruder body 1. A heating plate 18 is installed inside the interlayer. A power cord is connected to the outside of the heating plate 18. A connecting rod 16 is connected to one end of the stirring rod 8. A crushing blade 17 is fixedly connected to the outer surface of the connecting rod 16. A control box is connected to the outside of the device. The external control box is used to control the start and stop of the variable speed motor 5, the drive motor 6 and the heating plate 18.

[0025] The raw materials for PVC pipe production are fed into the inside of the feed hopper 3 from the top. The temperature inside the extruder body 1 is raised by the heating plate 18, which heats the raw materials entering the extruder body 1. Then, the drive motor 6 runs, driving the screw 7 to rotate, so that the raw materials are extruded out of the discharge pipe. The raw materials entering the feed hopper 3 move inside the feed hopper 3 under the action of the connecting frame 13 and the stirring rod 8. When the stirring rod 8 rotates, the connecting rod 16 and the crushing blade 17 at its tail end rotate synchronously. When the connecting rod 16 and the crushing blade 17 rotate, they can crush the larger particles of PVC raw materials that have agglomerated after being heated, thereby preventing the larger particles of PVC raw materials from entering the extruder body 1 and thus avoiding affecting the production quality of PVC pipes.

[0026] The working principle is as follows: PVC pipe production raw materials are fed into the inside of the feed hopper 3 from the top. The variable speed motor 5 is started through the external control box. The operation of the variable speed motor 5 drives the stirring rod 8 to rotate. The centrifugal force generated throws the connecting frame 13 outward, which can push away larger pieces of raw materials that are caused by the backflow of hot air in the extruder body 1, thus reducing the probability of agglomeration. The raw materials are also more likely to adhere to the inner wall of the feed hopper 3. When the connecting frame 13, brush 15 and scraper 14 rotate, they can scrape off the PVC pipe production raw materials adhering to the inner wall of the feed hopper 3, reducing the probability of raw material agglomeration and thus avoiding the reduction of the flow space in the feed hopper 3 due to raw materials adhering to the inner wall of the feed hopper 3, thereby improving the feeding efficiency of the extruder. When the stirring rod 8 rotates, the connecting rod 16 and crushing blade 17 at its tail end crush the larger PVC raw materials, which can prevent the larger PVC raw materials after heating from entering the extruder body 1, thus avoiding affecting the production quality of PVC pipes.

[0027] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A conical extruder feeding device for anti-clogging material used in PVC pipe production, characterized in that: include: The extruder body (1) has a discharge pipe (2) fixedly connected to one side, a feed hopper (3) fixedly connected to the top of the extruder body (1), a support rod (4) fixedly connected to the inner wall of the top of the feed hopper (3), a variable speed motor (5) fixedly connected to the upper surface of the support rod (4), a stirring rod (8) fixedly connected to the output end of the variable speed motor (5), one end of the stirring rod (8) is rotatably connected to the inside of the support rod (4), and one end of the stirring rod (8) extends into the inside of the feed hopper (3), and a collection groove (9) is symmetrically opened inside the stirring rod (8), and a spring (10) is fixedly connected to one side of the inside of the collection groove (9).

2. The conical extruder feeding device for anti-clogging material in PVC pipe production according to claim 1, characterized in that: The storage slot (9) has a limiting slot (11) inside, and a limiting block (12) is slidably connected inside the limiting slot (11). One end of the spring (10) is fixedly connected to a connecting bracket (13).

3. The conical extruder feeding device for anti-clogging material in PVC pipe production according to claim 2, characterized in that: The connecting frame (13) is slidably connected inside the storage slot (9). The connecting frame (13) is fixedly connected to one side of the limiting block (12). A scraper (14) is fixedly connected to one side of the connecting frame (13). A brush bristle (15) is fixedly connected to one side of the connecting frame (13).

4. The conical extruder feeding device for anti-clogging material in PVC pipe production according to claim 1, characterized in that: A drive motor (6) is installed on one side of the extruder body (1), and a screw (7) is fixedly connected to the output end of the drive motor (6). A sandwich layer is installed inside the extruder body (1), and a heating plate (18) is installed inside the sandwich layer. A power cord is connected to the heating plate (18).

5. The conical extruder feeding device for anti-clogging material in PVC pipe production according to claim 1, characterized in that: One end of the stirring rod (8) is connected to a connecting rod (16), and a crushing blade (17) is fixedly connected to the outer surface of the connecting rod (16).

6. The conical extruder feeding device for anti-clogging material in PVC pipe production according to claim 1, characterized in that: The device is connected to an external control box, which is used to control the start and stop of the variable speed motor (5), drive motor (6) and heating plate (18).

Images