Extruder feeding device for pipeline production

Abstract

The utility model relates to an extruder feeding device for pipeline production, which comprises a vertical cylinder, a sieve plate, a transverse rod and a vertical rod, and the top of the vertical cylinder is communicated with a feeding pipe; the sieve plate is rotationally connected into the lower portion of the vertical cylinder, the middle of the sieve plate is connected with a first rotating pipe, a first spiral groove is formed in the inner wall of the first rotating pipe, a second rotating pipe is arranged on the upper side of the first rotating pipe and rotationally connected with the peripheral wall of the vertical cylinder, and a second spiral groove opposite to the first spiral groove in rotating direction is formed in the inner wall of the second rotating pipe. Cross rods are annularly arrayed on the outer wall of the rotating pipe II, and a plurality of vertical rods are connected to the lower end of the peripheral wall of each cross rod; a driving rod is jointly arranged in the rotating pipe I and the rotating pipe II in a penetrating manner, a driving block I extending into the spiral groove I is arranged at the lower part of the peripheral wall of the driving rod, and a driving block II extending into the spiral groove II is arranged at the upper part of the peripheral wall of the driving rod. The feeding device solves the problem that the feeding device of the extruder for producing the pipeline is difficult to crush larger blocky raw materials.

Description

Technical Field

[0001] This utility model relates to the field of pipeline production technology, specifically to a feeding device for an extruder used in pipeline production. Background Technology

[0002] Pipe extruders are the core equipment in plastic pipe manufacturing. They heat and melt plastic raw materials, then continuously extrude them through a die under pressure. The resulting pipes are widely used in water supply and drainage, gas transmission, agricultural irrigation, construction, and other fields.

[0003] The extruder is equipped with a feeding device for supplying raw materials into the extruder. However, during the use of the feeding device, there are large lumps of raw materials. These large lumps are not only prone to clogging the feeding device, causing poor material discharge, but also difficult to melt after entering the extruder, affecting the forming effect of the pipe. Summary of the Invention

[0004] This invention addresses the problem that extruder feeding devices used in pipe production often struggle to crush large lumpy raw materials. It provides an extruder feeding device for pipe production that prevents lumpy raw materials from clogging the feeding device and improves pipe forming efficiency.

[0005] To solve the above problems, the technical solution of this utility model is:

[0006] A feeding device for an extruder used in pipe production includes a vertical cylinder, a screen plate, crossbars, and vertical rods. A feed pipe is connected to the top of the vertical cylinder. The screen plate is rotatably connected to the lower part of the vertical cylinder, and a rotating tube is connected to the middle of the screen plate. A spiral groove is provided on the inner wall of the rotating tube. A rotating tube is located above the rotating tube and is rotatably connected to the peripheral wall of the vertical cylinder. A spiral groove with the opposite rotation direction to the spiral groove is provided on the inner wall of the rotating tube. Crossbars are arranged in a ring on the outer wall of the rotating tube. Multiple vertical rods are connected to the lower end of the peripheral wall of each crossbar, and the lower end of each vertical rod slides in contact with the top surface of the screen plate. A drive rod is installed inside both the rotating tube and the rotating tube. A drive block is provided at the lower part of the peripheral wall of the drive rod, extending into the spiral groove, and a drive block is provided at the upper part of the peripheral wall, extending into the spiral groove. The drive rod is driven upwards or downwards by a hydraulic cylinder.

[0007] Furthermore, the sieve plate is provided with limiting rings on both the upper and lower sides of its circumference. The outer rings of the two limiting rings are fixedly connected to the inner wall of the vertical cylinder, and the opposite surfaces of the two limiting rings respectively contact the upper and lower edges of the sieve plate.

[0008] Furthermore, a horizontal plate is provided inside the vertical tube on the upper side of the multiple horizontal bars. Both ends of the horizontal plate are fixedly connected to the periphery of the vertical tube. The upper end of the outer wall of the second rotating tube is rotatably connected to the horizontal plate. The top surface of the horizontal plate is an arc-shaped surface with the protrusion facing upward.

[0009] Furthermore, there is a gap between the upper end of the first rotating tube and the lower end of the second rotating tube; the upper and lower ends of the first spiral groove pass through the upper and lower ends of the first rotating tube respectively, and the upper end of the first spiral groove is blocked by a sealing block; the upper and lower ends of the second spiral groove pass through the upper and lower ends of the second rotating tube respectively, and the upper end of the second spiral groove is blocked by a sealing block.

[0010] Furthermore, a hydraulic cylinder is fixed to the outer top surface of the vertical cylinder, and the piston end of the hydraulic cylinder moves through the closed end of the vertical cylinder and the upper end of the connecting drive rod.

[0011] Furthermore, a guide cylinder is provided inside the upper vertical cylinder of the horizontal plate. The guide cylinder is a hollow frustum with a larger top and a smaller bottom and open at both ends. The guide cylinder is sleeved outside the upper end of the drive rod, and the upper end of the peripheral wall of the guide cylinder is connected to the upper end of the inner wall of the vertical cylinder. A door is provided on the peripheral wall of the vertical cylinder between the horizontal plate and the screen plate.

[0012] The beneficial effects of this utility model through the above technical solution are as follows:

[0013] When the hydraulic cylinder drives the drive rod to move up and down repeatedly, multiple uprights rotate in the opposite direction to the screen plate. On the one hand, the uprights achieve the crushing function by colliding with larger raw materials on the screen plate, and on the other hand, they effectively disperse the accumulated raw materials. During the reciprocating motion of the screen plate, raw materials with a particle size smaller than the screen holes fall into the extruder through the screen holes, completing the screening and feeding. This can avoid blockage and large pieces of raw materials entering the extruder, and improve the pipe forming effect.

[0014] The multiple uprights of this invention move in the opposite direction to the movement of the sieve plate, which allows them to come into more contact with the raw materials on the sieve plate, thereby improving the crushing and dispersing effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a sectional front view of the present invention;

[0017] Figure 3 This is a schematic diagram of the structure connecting the horizontal plate, the rotating tube, the horizontal bar, and the vertical bar of this utility model;

[0018] Figure 4 This is a schematic diagram of the connection between the sieve plate and the rotating tube of this utility model.

[0019] The attached diagram is labeled as follows: 1. Vertical cylinder, 2. Screen plate, 3. Horizontal bar, 4. Vertical bar, 5. Feed pipe, 6. Rotary pipe one, 7. Spiral groove one, 8. Rotary pipe two, 9. Spiral groove two, 10. Drive rod, 11. Drive block one, 12. Drive block two, 13. Hydraulic cylinder, 14. Limiting ring, 15. Horizontal plate, 16. Sealed bearing, 17. Sealing block one, 18. Sealing block two, 19. Guide cylinder, 20. Gate body. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0021] like Figures 1-4 As shown, a feeding device for an extruder used in pipe production includes a vertical cylinder 1, a screen plate 2, crossbars 3, and vertical rods 4. The vertical cylinder 1 is a cylinder closed at the top and open at the bottom, with a feed pipe 5 connected to its top. The screen plate 2 is rotatably connected to the lower part of the vertical cylinder 1, and a rotating tube 6 is connected to the middle of the screen plate 2. The inner wall of the rotating tube 6 has a spiral groove 7, and a rotating tube 8 is located on the upper side of the rotating tube 6. The rotating tube 6 and the rotating tube 8 are cylindrical tubes with the same inner diameter. The rotating tube 8 is rotatably connected to the circumferential wall of the vertical cylinder 1, and the inner wall of the rotating tube 8 has a spiral groove 9 with the opposite rotation direction to the spiral groove 7. Crossbars 3 are arranged in a ring on the outer wall of the rotating tube 8, and the lower end of each crossbar 3 is connected to... There are multiple uprights 4, the lower end of each upright 4 slidingly contacts the top surface of the screen plate 2. The multiple uprights 4 are spaced apart along the length of the crossbar 3. Both the crossbar 3 and the uprights 4 are round rods. A drive rod 10 is installed inside the first rotating tube 6 and the second rotating tube 8. The drive rod 10 is a round rod with a diameter corresponding to the inner diameter of the first rotating tube 6. The lower part of the peripheral wall of the drive rod 10 is provided with a drive block 11 extending into the first spiral groove 7, and the upper part of the peripheral wall is provided with a drive block 12 extending into the second spiral groove 9. The drive block 11 is a rectangular block that slides in contact with the first spiral groove 7, and the drive block 12 is a rectangular block that slides in contact with the second spiral groove 9. The drive rod 10 is driven upward or downward by the hydraulic cylinder 13.

[0022] The sieve plate 2 is provided with limiting rings 14 on both the upper and lower sides of its circumference. The limiting rings 14 are circular rings. The outer rings of the two limiting rings 14 are fixedly connected to the inner wall of the vertical cylinder 1. The opposite surfaces of the two limiting rings 14 respectively contact the upper and lower edges of the sieve plate 2.

[0023] A horizontal plate 15 is provided inside the vertical cylinder 1 on the upper side of the multiple horizontal bars 3. Both ends of the horizontal plate 15 are fixedly connected to the periphery of the vertical cylinder 1. The upper end of the outer wall of the rotating tube 8 is rotatably connected to the horizontal plate 15 via a sealed bearing 16. The top surface of the horizontal plate 15 is an arc-shaped surface with the protrusion facing upward. The arc-shaped surface on the horizontal plate 15 can prevent raw materials from accumulating on the horizontal plate 15.

[0024] There is a gap between the upper end of the first rotating tube 6 and the lower end of the second rotating tube 8; the upper and lower ends of the first spiral groove 7 pass through the upper and lower ends of the first rotating tube 6 respectively, and the upper end of the first spiral groove 7 is blocked by the first sealing block 17 to prevent raw materials from entering the first spiral groove 7; the upper and lower ends of the second spiral groove 9 pass through the upper and lower ends of the second rotating tube 8 respectively, and the upper end of the second spiral groove 9 is blocked by the second sealing block 18 to prevent raw materials from entering the second spiral groove 9.

[0025] A hydraulic cylinder 13 is fixed on the outer top surface of the vertical cylinder 1. The piston end of the hydraulic cylinder 13 moves through the closed end of the vertical cylinder 1 and the upper end of the connecting drive rod 10.

[0026] A guide cylinder 19 is provided inside the vertical cylinder 1 on the upper side of the horizontal plate 15. The guide cylinder 19 is a hollow frustum with a larger top and smaller bottom and open at both ends. The guide cylinder 19 is sleeved on the upper end of the drive rod 10. The upper end of the peripheral wall of the guide cylinder 19 is connected to the upper end of the inner wall of the vertical cylinder 1. A door 20 is provided on the peripheral wall of the vertical cylinder 1 between the horizontal plate 15 and the screen plate 2. The door 20 can be closed or opened.

[0027] In use, the lower opening of the vertical cylinder 1 of this utility model is fixedly connected to the feed inlet of the extruder, and the door 20 is closed. The raw material for producing the pipeline enters the vertical cylinder 1 through the feed pipe 5. Guided by the guide cylinder 19, the raw material enters the middle of the top surface of the screen plate 2 through the lower opening of the guide cylinder 19. The raw material smaller than the diameter of the screen holes on the screen plate 2 enters the extruder through the screen holes. The piston end of the hydraulic cylinder 13 first drives the drive rod 10 to move downward. The drive block 11 on the drive rod 10 presses against the spiral groove 7 to drive the rotating tube 6 to rotate. The rotating tube 6 drives the screen plate 2 to rotate. During the rotation of the screen plate 22, the raw material on the top surface of the screen plate 22 also moves, allowing more raw material smaller than the diameter of the screen holes on the screen plate 2 to enter the extruder through the screen holes. The drive block 12 on the drive rod 10 presses against the spiral groove 2 to drive the rotating tube 8 in the opposite direction to the rotating tube 6. The rotating tube 2 has multiple upright rods 4 connected to it via a crossbar 3. These upright rods 4 rotate in the opposite direction to the rotation of the rotating tube 6. As the screen plate 2 rotates, the raw material on it collides with the material, crushing larger pieces and dispersing accumulated material. Material smaller than the screen holes passes through the screen holes and enters the extruder. Subsequently, the hydraulic cylinder 13 drives the drive rod 10 upwards, the drive block 11 presses against the spiral groove 7, driving the rotating tube 6 back to its initial state, and the drive block 12 presses against the spiral groove 9 back to its initial state. During the upward movement of the drive rod 10, the multiple upright rods 4 also rotate in the opposite direction to the screen plate 2, crushing larger pieces of material on the screen plate 2.

[0028] Therefore, when the piston end of the hydraulic cylinder 13 moves down or up repeatedly, multiple upright rods 4 collide with the raw material on the screen plate 2, which can crush the larger raw material on the screen plate 2 and disperse the raw material accumulated on the screen plate 2. During the reciprocating rotation of the screen plate 2, the raw material smaller than the screen holes on the screen plate 2 enters the extruder through the screen holes.

[0029] After feeding is completed, open the door 20 to clean impurities and difficult-to-crush raw materials on the screen plate 2.

[0030] The preferred 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. Any equivalent or equivalent modifications or substitutions to the technical solutions of the present utility model without departing from the spirit of the present utility model or the scope of disclosure shall fall within the protection scope of the present utility model.

Claims

1. A feeding device for an extruder used in pipe production, characterized in that, The system includes a vertical cylinder (1), a screen plate (2), a crossbar (3), and a vertical rod (4). The top of the vertical cylinder (1) is connected to a feed pipe (5). The screen plate (2) is rotatably connected to the lower part of the vertical cylinder (1). A rotating pipe (6) is connected to the middle of the screen plate (2). A spiral groove (7) is provided on the inner wall of the rotating pipe (6). A rotating pipe (8) is provided on the upper side of the rotating pipe (6). The rotating pipe (8) is rotatably connected to the peripheral wall of the vertical cylinder (1). A spiral groove (9) with the opposite rotation direction to the spiral groove (7) is provided on the inner wall of the rotating pipe (8). (8) has a ring array of crossbars (3) on its outer wall. Each crossbar (3) has multiple vertical rods (4) connected to its lower end. The lower end of each vertical rod (4) slides in contact with the top surface of the screen plate (2). The first rotating tube (6) and the second rotating tube (8) are both fitted with a drive rod (10). The lower part of the peripheral wall of the drive rod (10) is provided with a drive block (11) extending into the first spiral groove (7), and the upper part of the peripheral wall is provided with a drive block (12) extending into the second spiral groove (9). The drive rod (10) is driven upward or downward by a hydraulic cylinder (13).

2. The extruder feeding device for pipe production according to claim 1, characterized in that, The sieve plate (2) is provided with limiting rings (14) on both the upper and lower sides of its circumference. The outer rings of the two limiting rings (14) are fixedly connected to the inner wall of the vertical cylinder (1), and the opposite surfaces of the two limiting rings (14) respectively contact the upper and lower edges of the sieve plate (2).

3. The extruder feeding device for pipe production according to claim 1, characterized in that, A horizontal plate (15) is provided inside the vertical tube (1) on the upper side of the multiple horizontal bars (3). Both ends of the horizontal plate (15) are fixedly connected to the periphery of the vertical tube (1). The upper end of the outer wall of the rotating tube (8) is rotatably connected to the horizontal plate (15). The top surface of the horizontal plate (15) is an arc-shaped surface with a raised top.

4. The extruder feeding device for pipe production according to claim 1, characterized in that, There is a gap between the upper end of the first rotating tube (6) and the lower end of the second rotating tube (8); the upper and lower ends of the first spiral groove (7) pass through the upper and lower ends of the first rotating tube (6) respectively, and the upper end of the first spiral groove (7) is blocked by the first sealing block (17); the upper and lower ends of the second spiral groove (9) pass through the upper and lower ends of the second rotating tube (8) respectively, and the upper end of the second spiral groove (9) is blocked by the second sealing block (18).

5. The extruder feeding device for pipe production according to claim 1, characterized in that, A hydraulic cylinder (13) is fixed on the top surface of the vertical cylinder (1). The piston end of the hydraulic cylinder (13) moves through the closed end of the vertical cylinder (1) and the upper end of the connecting drive rod (10).

6. The extruder feeding device for pipe production according to claim 3, characterized in that, The upper side of the horizontal plate (15) is provided with a guide cylinder (19) inside the vertical cylinder (1). The guide cylinder (19) is a hollow truncated cone with a larger upper part and a smaller lower part and open at both ends. The guide cylinder (19) is sleeved on the upper end of the drive rod (10). The upper end of the peripheral wall of the guide cylinder (19) is connected to the upper end of the inner wall of the vertical cylinder (1). A door (20) is provided on the peripheral wall of the vertical cylinder (1) between the horizontal plate (15) and the sieve plate (2).

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