Wear-resistant hose and its extrusion mechanism

Abstract

The utility model discloses a kind of wear-resistant hose and its extruding mechanism, it is related to extruder field, to solve the problem of uneven melting caused by the agglomerated raw material into extruder, resulting in hose appears inclusion, air hole, surface is not smooth and other defects, its technical scheme main point is: including: extrusion shell, the side of extrusion shell top is fixed with feed hopper.The utility model is driven cam rotation by servo motor, to make screening net shake and screen raw material, agglomerated raw material will not pass through screening net and enter drying shell due to volume problem, electric fan draws external air into drying shell, air is heated by electric heating wire and blows in drying shell, agglomerated raw material is dried, while electric fan is driven to rotate by connecting rod and mounting rod and drives to scatter paddle and scatter agglomerated raw material, accelerate raw material drying and scatter efficiency, dispersed raw material is returned to feed hopper by return pipe, avoid agglomerated raw material into extruding mechanism to cause uneven melting and make hose appear inclusion, air hole, surface is not smooth and other defects.

Description

Technical Field

[0001] This utility model relates to the field of extruders, and more specifically, to a wear-resistant hose and its extrusion mechanism. Background Technology

[0002] Wear-resistant hoses are flexible pipes with excellent wear resistance, typically used in applications requiring frequent bending, vibration, or operation in harsh environments. Their core feature is the combination of wear-resistant materials and hose flexibility, effectively resisting mechanical wear and extending service life. In the manufacturing process of wear-resistant hoses, the extrusion mechanism is usually a key step. Most wear-resistant hoses are produced through extrusion, and the extrusion mechanism is the main equipment for hose forming. The extrusion mechanism heats the material and extrudes it under pressure to form continuous profiles, pipes, films, and other products.

[0003] For example, a high-pressure hose extruder disclosed in Chinese Patent Publication No. CN210415438U includes a conveying cylinder. One end of the conveying cylinder is provided with a feeding mechanism. A conveying screw is rotatably installed inside the conveying cylinder. The end of the conveying screw is connected to the output shaft of a third motor through a transmission mechanism. The other end of the conveying cylinder is provided with a discharge mold. A heating mechanism is provided on the outer wall of the conveying cylinder. The extruder also includes a cooling mechanism. The cooling mechanism includes an inner cylinder positioned opposite the discharge mold. An outer cylinder is fitted around the inner cylinder. The two ends of the inner cylinder are fixedly connected to the two ends of the outer cylinder, respectively. A water spray pipe is fixed on the outer cylinder. The water spray pipe is connected to a water delivery mechanism. The water spray pipe is provided with multiple nozzles. The nozzles extend into the interlayer between the outer cylinder and the inner cylinder. This utility model provides good cooling and facilitates hose shaping.

[0004] In the extrusion mechanism disclosed in the above technical solution, the raw materials for making hoses may clump together due to high environmental humidity and excessive stacking and compression during storage. If the raw materials are directly fed into the extruder after clumping, uneven feeding will occur. Uneven feeding will cause uneven melting, resulting in defects such as inclusions, air holes, and rough surfaces in the hose.

[0005] Therefore, a new solution is needed to address this problem. Utility Model Content

[0006] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a wear-resistant hose and its extrusion mechanism. The dry sieve assembly breaks up and dries the clumps of raw materials, and the dispersed raw materials return to the feed hopper through the return pipe. This avoids the clumps of raw materials entering the extrusion mechanism, which would cause uneven melting and result in defects such as inclusions, air holes, and rough surfaces in the hose.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an extrusion mechanism, comprising: An extrusion shell, wherein a feed hopper is fixed to one side of the top of the extrusion shell, and a discharge chute is provided on one side of the feed hopper; A dry screening assembly is used to screen out agglomerated raw materials. The dry screening assembly includes a screening component, a drying component, and a dispersing component. The screening component includes a screening screen disposed inside the feed hopper, with one side of the screening screen hinged to one side of the inner wall of the feed hopper. The drying component includes a drying shell fixed to the top of the extrusion shell by a support frame. A return pipe is provided at the bottom of the drying shell, with one end of the return pipe extending to the inside of the feed hopper. A feed hopper is provided between the drying shell and the feed hopper. The drying shell has a heating wire inside, a connecting frame fixed inside, a connecting rod rotating on the top of the connecting frame, an electric fan fixed at one end of the connecting rod, and a sieve fixed on the inner surface of the drying shell.

[0008] By adopting the above technical solution, the servo motor drives the cam to rotate, which in turn causes the screening screen to vibrate and screen the raw materials. Due to their size, the clumps of raw materials will not pass through the screening screen and enter the drying shell. The electric fan draws external air into the drying shell, and the air is heated by the heating wire and blown into the drying shell to dry the clumps of raw materials. At the same time, the electric fan drives the dispersing blades to rotate through the connecting rod and the mounting rod to disperse the clumps of raw materials, which accelerates the drying and dispersing efficiency of the raw materials. The dispersed raw materials return to the feed hopper through the return pipe, which prevents the clumps of raw materials from entering the extrusion mechanism and causing uneven melting, resulting in defects such as inclusions, air holes, and rough surfaces in the hose.

[0009] The present invention is further configured such that: an external threaded mounting ring is fixed to the top of the drying shell, an internal threaded connecting ring is threaded to the outer surface of the external threaded mounting ring, a filter screen is fixed to the inner side of the internal threaded connecting ring, and an assist rod is fixed to the outer surface of the internal threaded connecting ring.

[0010] The present invention is further configured such that: the disintegrating component includes a mounting rod that rotates at the bottom of the connecting frame, one end of the mounting rod extends to the top of the connecting frame and is fixedly connected to one end of the connecting rod, and a disintegrating blade is fixed on the outer surface of the mounting rod.

[0011] The present invention is further configured such that: one end of the mounting rod extends to the bottom of the sieve, and the dispersing component also includes an inclined strip fixed to one end of the mounting rod, a load-bearing strip fixed to the inner surface of the drying shell, and an L-shaped gravity striking strip that rotates on the inner surface of the drying shell.

[0012] The present invention is further configured such that: the screening component includes a servo motor fixed to the outer wall of the feed hopper, guide plates respectively fixed to both sides of the inner wall of the feed hopper, a cam rotating on one side of the inner wall of the feed hopper, and a spring fixed to the top side of the screening screen; one end of the output shaft of the servo motor is fixedly connected to one side of the cam, and one end of the spring is fixed to the bottom of one of the guide plates.

[0013] The present invention is further configured such that: a feeding twin screw is provided on the inner side of the extrusion shell, and an extrusion head is provided on one side of the extrusion shell.

[0014] This application also provides a wear-resistant hose, including the above-described extrusion mechanism, for extruding the wear-resistant hose.

[0015] In summary, this utility model has the following beneficial effects: 1. The servo motor drives the cam to rotate, which in turn causes the screening screen to vibrate and screen the raw materials. Due to their size, the clumps of raw materials will not pass through the screening screen and enter the drying shell. The electric fan draws outside air into the drying shell, and the air is heated by the heating wire and blown into the drying shell to dry the clumps of raw materials. At the same time, the electric fan drives the dispersing blades to rotate through the connecting rod and the mounting rod to break up the clumps of raw materials, which accelerates the drying and dispersing efficiency of the raw materials. The dispersed raw materials return to the feed hopper through the return pipe, which prevents the clumps of raw materials from entering the extrusion mechanism and causing uneven melting, resulting in defects such as inclusions, air holes, and rough surfaces in the hose.

[0016] 2. As the mounting rod rotates, it drives the inclined bar to rotate. After passing the L-shaped gravity striking plate, the inclined bar moves the L-shaped gravity striking plate so that it deflects in the opposite direction of the screen with the rotation connection point as the center. One end of the L-shaped gravity striking plate will strike the bottom of the screen, shaking out the raw material stuck in the screen. After the strike, it will reset due to its own gravity and wait for the next strike. When falling, it is supported and hindered by the load-bearing bar to restrict its position, so as to prevent the screen mesh from being blocked and affecting the subsequent passage of the dispersed raw material. Attached Figure Description

[0017] Figure 1 This is a perspective view of this embodiment; Figure 2 This is a cross-sectional view of this embodiment; Figure 3 for Figure 2 Enlarged diagram of section A in the middle; Figure 4 for Figure 2 A schematic diagram showing the disassembly of the middle drying shell; Figure 5 for Figure 4 Enlarged schematic diagram of section B.

[0018] Figure Descriptions: 1. Extrusion Shell; 2. Dry Screen Assembly; 21. Screening Mesh; 22. Drying Shell; 23. Feed Hopper; 24. Heating Wire; 25. Connecting Frame; 26. Connecting Rod; 27. Electric Fan; 28. Screening Mesh; 29. ​​External Threaded Mounting Ring; 210. Internal Threaded Connecting Ring; 211. Filter Mesh; 212. Assist Rod; 213. Mounting Rod; 214. Dispersing Paddle; 215. Inclined Bar; 216. Load-Bearing Bar; 217. L-Shaped Gravity Impact Bar; 218. Servo Motor; 219. Guide Plate; 220. Cam; 221. Spring; 222. Return Pipe; 3. Feed Hopper; 4. Discharge Groove; 5. Feeding Twin Screw; 6. Extrusion Head. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings.

[0020] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific part, respectively.

[0021] like Figures 1-5 As shown, an extrusion mechanism includes an extrusion shell 1 and a dry screening assembly 2. A feed hopper 3 is fixed to one side of the top of the extrusion shell 1, and a discharge chute 4 is opened on one side of the feed hopper 3. A feeding twin screw 5 is arranged inside the extrusion shell 1, and an extrusion head 6 is arranged on one side of the extrusion shell 1. The dry screening assembly 2 is used to screen out agglomerated raw materials. The dry screening assembly 2 includes a screening component, a drying component, and a dispersing component. The screening component includes a screening screen 21 disposed inside the feed hopper 3 and a servo motor 218 fixed to the outer wall of the feed hopper 3. The feed hopper 3 has guide plates 219 fixed to both sides of the inner wall, a cam 220 rotating on one side of the inner wall, and at least two springs 221 fixed to the top of the screen 21. One side of the screen 21 is hinged to one side of the inner wall of the feed hopper 3, and this side is located at the opening of the discharge chute 4. One end of the output shaft of the servo motor 218 is fixedly connected to one side of the cam 220. The cam 220 is located below the screen 21. One end of the spring 221 is fixed to the bottom of one of the guide plates 219.

[0022] The drying unit includes a drying shell 22 fixed to the top of the extrusion shell 1 by a support frame. A return pipe 222 is provided at the bottom of the drying shell 22, with one end extending into the inner side of the feed hopper 3. A guide hopper 23 is provided between the drying shell 22 and the feed hopper 3. One side of the guide hopper 23 corresponds to the opening of the discharge trough 4, and the opening on the other side extends into the drying shell 22. A heating wire 24, of type Cr25Ni20, is provided inside the drying shell 22. ° (p0.6mm or above) is made of high-temperature nickel-chromium alloy and can withstand temperatures up to 1200°C. A connecting frame 25 is fixed inside the drying shell 22 and below the heating wire 24. A connecting rod 26 rotates on the top of the connecting frame 25. An electric fan 27 is fixed at one end of the connecting rod 26 and is located above the heating wire 24. A sieve 28 is fixed on the inner surface of the drying shell 22 and below the connecting frame 25. After the clumps of raw materials are broken up, they can pass through the sieve 28.

[0023] The top of the drying shell 22 is fixed with an external threaded mounting ring 29. The outer surface of the external threaded mounting ring 29 is threadedly connected to an internal threaded connecting ring 210. The inner side of the internal threaded connecting ring 210 is fixed with a filter screen 211 for blocking external dust. The outer surface of the internal threaded connecting ring 210 is fixed with an assist rod 212. The internal threaded connecting ring 210 can be rotated by the assist rod 212, so that the internal threaded connecting ring 210 is unscrewed from the external threaded mounting ring 29.

[0024] The disintegrating components include a mounting rod 213 rotating at the bottom of the connecting frame 25, at least two inclined bars 215 fixed to one end of the mounting rod 213, a load-bearing bar 216 fixed to the inner surface of the drying shell 22, and an L-shaped gravity striking bar 217 rotating on the inner surface of the drying shell 22. The upper end of the L-shaped gravity striking bar 217 is a gravity plate, and the rest is lighter than the weight of the gravity plate, ensuring that the L-shaped gravity striking bar 217 can automatically fall back to its original position. At least three L-shaped gravity striking bars 217 are provided, and the three are equidistantly distributed on the inner surface of the drying shell 22, all located below the screen 28. One end of the mounting rod 213 extends to the top of the connecting frame 25 and is fixedly connected to one end of the connecting rod 26. A disintegrating blade 214 is fixed to the outer surface of the mounting rod 213. One end of the mounting rod 213 extends to the bottom of the screen 28, and the inclined bars 215 are installed at the end of the mounting rod 213 that extends to the bottom of the screen 28.

[0025] Raw materials are introduced into the feed hopper 3, and the servo motor 218 is started. The servo motor 218 drives the cam 220 to rotate, and the cam 220 pushes one side of the screening screen 21 upward. The side of the screening screen 21 that is pushed upward will tilt upward and squeeze the spring 221. Later, it will return to its original position under the elastic force of the spring 221. In this way, the raw materials falling on the top of the screening screen 21 are screened. The raw materials that are clumped together will not pass through the screening screen 21 due to their volume. Under the shaking screening of the screening screen 21, they pass through the discharge chute 4 and enter the feed hopper 23, and then enter the drying shell 22. The electric fan 27 and the heating wire 24 are started. The electric fan 27 draws outside air into the drying shell 22. The air is heated by the heating wire 24 and blows onto the clumps of raw materials in the drying shell 22. This dries the moisture in the raw materials that are sticking together due to high humidity, making it easier for the clumps to disperse. At the same time, the electric fan 27 drives the connecting rod 26 and the mounting rod 213 to rotate. The mounting rod 213 drives the dispersing blades 214 to rotate, which quickly disperses the clumps of raw materials. The dispersed raw materials can dry their moisture more quickly, preventing the clumps from entering the extrusion mechanism and causing uneven melting, which can lead to defects such as inclusions, air holes, and rough surfaces in the hose. As the mounting rod 213 rotates, it will drive the inclined bar 215 to rotate. The inclined bar 215 will pass through the L-shaped gravity striking plate 217 and deflect the L-shaped gravity striking plate 217 in the opposite direction of the screen 28 with the rotation connection point as the center. One end of the L-shaped gravity striking plate 217 will strike the bottom of the screen 28, shaking out the raw material stuck in the screen 28. After the strike, it will reset due to its own gravity and wait for the next strike. When falling, it will be supported and hindered by the load-bearing bar 216 to restrict its position, so as to prevent the mesh of the screen 28 from being blocked and affecting the subsequent passage of the dispersed raw material.

[0026] In addition, this application embodiment also provides a wear-resistant hose, including the extrusion mechanism described in the above embodiment, for extruding the wear-resistant hose.

[0027] The specific embodiments are merely explanations of this utility model and are not intended to limit it. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this utility model.

Claims

1. An extrusion mechanism, characterized in that, include: An extrusion shell (1) is provided with a feed hopper (3) fixed on one side of the top of the extrusion shell (1), and a discharge chute (4) is provided on one side of the feed hopper (3). Dry screening assembly (2), the dry screening assembly (2) is used to screen out agglomerated raw materials, the dry screening assembly (2) includes screening components, drying components and dispersing components, the screening components include screening screen (21) disposed inside the feed hopper (3), one side of the screening screen (21) is hinged to one side of the inner wall of the feed hopper (3), the drying components include drying shell (22) fixed to the top of the extrusion shell (1) by a support frame, the bottom of the drying shell (22) is provided with a return pipe (222), one end of the return pipe (222) extends to the inside of the feed hopper (3), and a feed hopper (23) is provided between the drying shell (22) and the feed hopper (3); The drying shell (22) is provided with a heating wire (24) on the inner side, a connecting frame (25) is fixed on the inner side of the drying shell (22), a connecting rod (26) is rotatably mounted on the top of the connecting frame (25), an electric fan (27) is fixed at one end of the connecting rod (26), and a screen (28) is fixed on the inner surface of the drying shell (22).

2. The extrusion mechanism according to claim 1, characterized in that: The top of the drying shell (22) is fixed with an external threaded mounting ring (29), and the outer surface of the external threaded mounting ring (29) is threaded with an internal threaded connecting ring (210). The inner side of the internal threaded connecting ring (210) is fixed with a filter screen (211), and the outer surface of the internal threaded connecting ring (210) is fixed with an assist rod (212).

3. The extrusion mechanism according to claim 2, characterized in that: The disintegrating component includes a mounting rod (213) that rotates at the bottom of the connecting frame (25). One end of the mounting rod (213) extends to the top of the connecting frame (25) and is fixedly connected to one end of the connecting rod (26). Disintegrating blades (214) are fixed on the outer surface of the mounting rod (213).

4. The extrusion mechanism according to claim 3, characterized in that: One end of the mounting rod (213) extends to the bottom of the sieve (28), and the dispersing component also includes an inclined strip (215) fixed to one end of the mounting rod (213), a load-bearing strip (216) fixed to the inner surface of the drying shell (22), and an L-shaped gravity striking strip (217) rotating on the inner surface of the drying shell (22).

5. The extrusion mechanism according to claim 1, characterized in that: The screening component also includes a servo motor (218) fixed to the outer wall of the feed hopper (3), guide plates (219) fixed to both sides of the inner wall of the feed hopper (3), a cam (220) rotating on one side of the inner wall of the feed hopper (3), and a spring (221) fixed to the top side of the screening screen (21). One end of the output shaft of the servo motor (218) is fixedly connected to one side of the cam (220), and one end of the spring (221) is fixed to the bottom of one of the guide plates (219).

6. The extrusion mechanism according to claim 1, characterized in that: The inner side of the extrusion shell (1) is provided with a feeding twin screw (5), and the side of the extrusion shell (1) is provided with an extrusion head (6).

7. A wear-resistant hose, characterized in that, The extrusion mechanism, including any one of claims 1-6, is used to extrude the wear-resistant hose.

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