Single screw extruder with external circulation cooling

Abstract

The utility model discloses a single screw extruder adopting outer circulation type cooling relates to single screw extruder technical field. Including mounting support, be provided with cooling mechanism for single screw extruder equipment on the mounting support, and cooling mechanism includes: cover subassembly, including the single screw extruder main body of mounting support upper end setting, the utility model heat preservation water tank can add water source and ice block flexibly, ensure that the cooling medium always keeps lower temperature, improve cooling efficiency, then first spring guide pipe and second spring guide pipe have good flexibility, can avoid the pipeline damage caused by rigid connection in the cooling pipe rotation process with gear ring, ensure the stability and reliability of cooling medium delivery, finally, the step motor in drive subassembly, transmission gear, gear ring cooperate and work, make the cooling pipe can surround single screw extruder main body even cover, greatly improved the uniformity of cooling.

Description

Technical Field

[0001] This utility model relates to the field of single-screw extruder technology, specifically a single-screw extruder employing external circulation cooling. Background Technology

[0002] Single-screw extruders are key equipment in industries such as plastics processing and rubber products. Their working principle involves using the rotation of the screw to generate pressure and shear force, which fully plasticizes and mixes the material before it is formed through a die. During this process, friction between the material and the screw and barrel, as well as internal shearing within the material, generates a significant amount of heat. If this heat cannot be dissipated in time, it will lead to overheating and decomposition of the material, affecting the physical properties and appearance quality of the product. Furthermore, excessively high temperatures will accelerate wear on equipment components, shortening the equipment's lifespan. Therefore, an efficient and stable cooling system is crucial for the normal operation of a single-screw extruder.

[0003] Single-screw extruders are key equipment in industries such as plastics processing and rubber products. During processing, they easily generate a lot of heat due to friction. However, existing single-screw extruders usually lack cooling mechanisms. Some of these machines use traditional air cooling or water cooling methods. Water cooling typically involves installing fixed cooling water pipes on the outside of the extruder, with the flow of water carrying away the heat. However, the cooling pipes are usually difficult to completely cover the outer wall of the extruder, resulting in low cooling efficiency. Therefore, this utility model provides a single-screw extruder that adopts external circulation cooling. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a single-screw extruder with external circulation cooling, which solves the problem that existing single-screw extruders usually lack cooling mechanisms. Some of these machines use traditional air cooling or water cooling methods. Water cooling typically involves installing fixed cooling water pipes outside the extruder to remove heat through water flow. However, the cooling pipes are usually difficult to completely cover the outer wall of the extruder, resulting in low cooling efficiency.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a single-screw extruder employing external circulation cooling, comprising a mounting bracket, wherein a cooling mechanism for the single-screw extruder is mounted on the mounting bracket, and the cooling mechanism includes: The covering assembly includes a single-screw extruder body mounted on the upper end of a mounting bracket. A support base is fixed on one side of the mounting bracket, and an insulated water tank is mounted on the upper end of the support base. A gear ring connected to the center of the outer wall of the single-screw extruder body via a drive assembly is rotatably connected. Cooling pipes are uniformly penetrated inside the gear ring, and a first guide ring and a second guide ring are respectively installed at both ends of the cooling pipes. The filter assembly includes a second spring conduit connected to one side of a second conduit ring, and the end of the second spring conduit is provided with a filter cartridge connected by a detachable component.

[0006] Preferably, the insulated water tank is used to add water and ice, and the upper end of the insulated water tank is provided with a water inlet.

[0007] Preferably, a water pump is provided on one side of the insulated water tank, and the output end of the water pump is connected to a first spring conduit, the other end of the first spring conduit being in a flow connection with a first conduit ring.

[0008] Preferably, a pair of rotating rings are rotatably connected to the outer wall of the main body of the single screw extruder, and the cooling pipe is fixedly connected to the rotating rings through the shaft.

[0009] Preferably, the drive assembly includes a mounting plate disposed inside the mounting bracket, a stepper motor disposed on the upper end surface of the mounting plate, a transmission gear connected to the output end of the stepper motor, a gear ring being rotatably connected to the outer wall of the single screw extruder body, and the transmission gear being meshed with the gear ring.

[0010] Preferably, the detachable component includes a connecting plate fixed to the end of the second spring guide tube, the filter cylinder being tightly fitted to the lower end face of the connecting plate, a pair of bolts being provided inside the connecting plate, the connecting plate being configured as two sets, the two sets of connecting plates being located at the upper and lower ends of the filter cylinder respectively, and a filter screen for filtration being provided inside the filter cylinder. Beneficial effects

[0011] This invention provides a single-screw extruder employing external circulation cooling. Compared with existing technologies, it has the following advantages: Firstly, the insulated water tank of this utility model allows for flexible addition of water and ice, ensuring that the cooling medium always maintains a low temperature and improving cooling efficiency. Secondly, the first and second spring conduits have good flexibility, which can prevent pipeline damage caused by rigid connection during the rotation of the cooling pipe with the gear ring, ensuring the stability and reliability of the cooling medium delivery. Finally, the stepper motor, transmission gear, and gear ring in the drive assembly work together to enable the cooling pipe to evenly cover the main body of the single screw extruder, greatly improving the uniformity of cooling.

[0012] Secondly, the cooling medium flowing out from the second guide ring of this invention flows into the filter cylinder through the second spring guide. The filter cylinder is equipped with a filter screen. When the cooling medium passes through the filter screen, impurities are intercepted, preventing impurities from entering the cooling system and avoiding blockage of cooling pipes and other components due to impurities, thus extending the service life of the cooling system. The design of the detachable components makes the maintenance and replacement of the filter screen of the filter cylinder simple and convenient. Then, the coolant is pumped into the first spring tube, the first guide ring, the cooling pipe, and the second guide ring through the second spring tube and then into the insulated water tank for cooling. This cycle allows the cooling medium to continuously act on the main body of the single screw extruder, avoiding cooling interruption. The cooling medium can be reused during the circulation process, eliminating the need for frequent replacement of the new medium and greatly saving water resources or other cooling medium consumption. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the cooling pipe structure of this utility model; Figure 3 This is a schematic diagram of the first and second spring conduits of this utility model; Figure 4 This is a schematic diagram of the filter cartridge structure of this utility model.

[0014] In the diagram: 1. Mounting bracket; 2. Support base; 201. Insulated water tank; 202. Water inlet; 3. Single screw extruder body; 301. Mounting plate; 302. Stepper motor; 303. Transmission gear; 304. Gear ring; 4. Rotating ring; 401. Cooling pipe; 5. First guide ring; 501. First spring guide; 502. Water pump; 6. Second guide ring; 601. Second spring guide; 602. Connecting plate; 603. Filter cartridge; 604. Bolt. Detailed Implementation

[0015] 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 protection scope of the present utility model.

[0016] Please see Figure 1-4 This utility model provides a technical solution: a single-screw extruder using external circulation cooling, including a mounting bracket 1, on which a cooling mechanism for the single-screw extruder is provided, the cooling mechanism including: The covering assembly includes a single screw extruder body 3 mounted on the upper end of a mounting bracket 1, a support base 2 fixed on one side of the mounting bracket 1, an insulated water tank 201 mounted on the upper end of the support base 2, and a gear ring 304 rotatably connected to the center of the outer wall of the single screw extruder body 3 via a drive assembly. Cooling pipes 401 are uniformly penetrated inside the gear ring 304, and a first guide ring 5 and a second guide ring 6 are respectively mounted on both ends of the cooling pipes 401. The filter assembly includes a second spring conduit 601 connected to one side of the second conduit ring 6, and a filter cartridge 603 connected to the end of the second spring conduit 601 via a detachable component.

[0017] In a preferred embodiment, the insulated water tank 201 is used to add water and ice. The upper end of the insulated water tank 201 is provided with a water inlet 202, and a water pump 502 is provided on one side of the insulated water tank 201. The output end of the water pump 502 is connected to a first spring conduit 501, and the other end of the first spring conduit 501 is in a flow connection with a first conduit ring 5. Water and ice are added to the insulated water tank 201 through the water inlet 202 to maintain a low temperature inside the water tank. The water pump 502 is started to extract the cooling medium in the water tank and deliver it to the first conduit ring 5 through the first spring conduit 501.

[0018] The drive assembly includes a mounting plate 301 installed inside the mounting bracket 1. A stepper motor 302 is installed on the upper surface of the mounting plate 301. A transmission gear 303 is connected to the output end of the stepper motor 302. A gear ring 304 is rotatably connected to the outer wall of the single screw extruder body 3. The transmission gear 303 and the gear ring 304 are meshed. When the stepper motor 302 drives the transmission gear 303 to reciprocate, the gear ring 304 is rotated on the outer wall of the single screw extruder body 3, so that the cooling pipe 401 is evenly covered on the outer wall of the single screw extruder body 3.

[0019] When the cooling medium enters the first conduit ring 5, it flows evenly into the cooling pipe 401. The cooling pipe 401 passes through the inside of the gear ring 304 and is fixedly connected to the rotating ring 4. When the stepper motor 302 starts, its output end drives the transmission gear 303 to rotate. Since the transmission gear 303 meshes with the gear ring 304, it drives the gear ring 304 to rotate on the outer wall of the single screw extruder body 3, so that the cooling pipe 401 makes a reciprocating circular motion around the single screw extruder body 3, thereby achieving uniform cooling of the outer wall of the single screw extruder body 3. When the cooling pipe 401 is driven by the transmission gear 303 to rotate, the range of motion is small. It is controlled by the stepper motor 302, and the stepper motor 302 is model 57HS22-A, which belongs to the prior art.

[0020] Furthermore, the cooled medium flows from the other end of the cooling pipe 401 into the second conduit ring 6.

[0021] In a preferred embodiment, a pair of rotating rings 4 are rotatably connected to the outer wall of the single screw extruder body 3. The cooling pipe 401 is fixedly connected to the rotating rings 4 through the pipe. The rotating rings 4 rotate on the outer wall of the single screw extruder body 3 to provide support for the stable operation of the cooling pipes 401 and ensure that the cooling process is continuous and stable.

[0022] In a preferred embodiment, the detachable component includes a connecting plate 602 fixed to the end of the second spring conduit 601, and a filter cylinder 603 tightly fitted to the lower end face of the connecting plate 602. A pair of bolts 604 are provided inside the connecting plate 602. The connecting plate 602 is configured as two sets, with the two sets of connecting plates 602 located at the upper and lower ends of the filter cylinder 603 respectively. A filter screen for filtration is provided inside the filter cylinder 603. The cooling medium flowing out from the second conduit ring 6 flows into the filter cylinder 603 through the second spring conduit 601. The filter screen inside the filter cylinder 603 intercepts impurities when the cooling medium passes through the filter screen.

[0023] Furthermore, the connecting plate 602 and bolt 604 in the detachable assembly ensure that the filter cartridge 603 is tightly connected to the second spring guide tube 601 and is easy to disassemble. When it is necessary to clean or replace the filter screen, simply unscrew the bolt 604 to remove the filter cartridge 603 from the connecting plate 602.

[0024] Additional notes: The connecting plate 602 at the lower end of the filter cartridge 603 is in a flow connection with the insulated water tank 201.

[0025] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0026] During operation, the insulated water tank 201 is filled with water and ice through the inlet 202 to maintain a low temperature. After the water pump 502 starts, it draws out the cooling medium from the water tank and delivers it to the first guide ring 5 through the first spring guide tube 501. After entering the first guide ring 5, the cooling medium flows evenly into the cooling pipe 401. The cooling pipe 401 passes through the inside of the gear ring 304 and is fixedly connected to the rotating ring 4. When the stepper motor 302 on the mounting plate 301 starts, its output end drives the transmission gear 303 to rotate. Because the transmission gear 303 meshes with the gear ring 304, which is rotatably connected to the outer wall of the single screw extruder body 3, it drives the gear ring 304 to rotate. This allows the cooling pipe 401 to reciprocate in a small range around the single-screw extruder body 3 under the support of the rotating ring 4, achieving uniform cooling of the outer wall of the single-screw extruder body 3. The cooled medium flows from the other end of the cooling pipe 401 into the second guide ring 6, and then into the filter cylinder 603 through the second spring guide 601. The filter screen inside the filter cylinder 603 intercepts impurities in the cooling medium. The filter cylinder 603 is tightly connected to the connecting plate 602 at the end of the second spring guide 601 through two sets of connecting plates 602 and bolts 604. When it is necessary to clean or replace the filter screen, the filter cylinder 603 can be removed by unscrewing the bolts 604.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A single-screw extruder employing external circulation cooling, comprising a mounting bracket (1), characterized in that: The mounting bracket (1) is provided with a cooling mechanism for a single-screw extruder, the cooling mechanism including: The covering assembly includes a single screw extruder body (3) mounted on the upper end of a mounting bracket (1). A support base (2) is fixed on one side of the mounting bracket (1). A heat preservation water tank (201) is mounted on the upper end of the support base (2). A gear ring (304) connected to the center of the outer wall of the single screw extruder body (3) via a drive assembly is rotatably connected. Cooling pipes (401) are uniformly penetrated inside the gear ring (304). A first guide ring (5) and a second guide ring (6) are respectively installed at both ends of the cooling pipe (401). The filter assembly includes a second spring conduit (601) that is connected to one side of a second conduit ring (6), and the end of the second spring conduit (601) is provided with a filter cartridge (603) connected by a detachable assembly.

2. A single-screw extruder with external circulation cooling according to claim 1, characterized in that: The insulated water tank (201) is used to add water and ice materials, and the upper end of the insulated water tank (201) is provided with a water inlet (202).

3. A single-screw extruder with external circulation cooling according to claim 1, characterized in that: A water pump (502) is provided on one side of the insulated water tank (201). The output end of the water pump (502) is connected to a first spring conduit (501), and the other end of the first spring conduit (501) is in a flow connection with a first conduit ring (5).

4. A single-screw extruder with external circulation cooling according to claim 1, characterized in that: The outer wall of the main body (3) of the single screw extruder is rotatably connected to a pair of rotating rings (4), and the cooling pipe (401) is fixedly connected to the rotating rings (4) through the pipe.

5. A single-screw extruder with external circulation cooling according to claim 1, characterized in that: The drive assembly includes a mounting plate (301) disposed inside the mounting bracket (1), a stepper motor (302) disposed on the upper end surface of the mounting plate (301), a transmission gear (303) connected to the output end of the stepper motor (302), and a gear ring (304) rotatably connected to the outer wall of the single screw extruder body (3), and the transmission gear (303) meshing with the gear ring (304).

6. A single-screw extruder with external circulation cooling according to claim 1, characterized in that: The detachable assembly includes a connecting plate (602) fixed to the end of the second spring guide tube (601), the filter cylinder (603) is located on the lower end face of the connecting plate (602) and fits tightly, a pair of bolts (604) are provided inside the connecting plate (602), the connecting plate (602) is configured as two sets, and the two sets of connecting plates (602) are respectively located at the upper and lower ends of the filter cylinder (603).

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