A polyethylene pipe production melting apparatus

Abstract

The utility model discloses a kind of polyethylene pipeline production melting equipment, it is related to polyethylene pipe production equipment technical field;And the utility model includes rack, extruder is installed on the rack, the top of the feed frame of extruder is equipped with hopper, the top of the hopper is fixedly installed with feed frame, two symmetrically arranged baffles are rotatably arranged in the feed frame, two The baffle is oppositely inclined arrangement, two symmetrically arranged drive shafts are arranged in the lower portion of two baffles in the feed frame, and a knocking block is fixedly arranged at one end of the drive shaft in the feed frame;In the utility model, two groups of knocking blocks are arranged in a staggered manner, under the driving of the second motor, the drive shaft is rotated in opposite directions by the matching engagement of the connecting gear, the raw materials falling into the drive shaft can be fully knocked, the problem of poor feeding caused by caking is reduced from the source, the material conveying is stable, and the melting process in the extruder can be more uniform.

Description

Technical Field

[0001] This utility model relates to the technical field of polyethylene pipe production equipment, specifically a polyethylene pipe production melting equipment. Background Technology

[0002] In polyethylene (PE) pipe production, single-screw extruders are the most widely used melting equipment, suitable for the continuous production of conventional PE pipes; twin-screw extruders, on the other hand, play a role in scenarios requiring high-quality mixing and complex formulations. Both achieve polyethylene melting through a "heating + shearing" process, and with the assistance of auxiliary equipment such as drying, filtration, and temperature control, they work together to ensure melt quality, laying the foundation for subsequent pipe forming. Currently, when using screw extruders for polyethylene pipe production, operators need to feed the raw materials through the feed hopper at the top of the screw extruder. However, the raw material particles sometimes clump together, causing uneven flow into the extruder and resulting in unstable material delivery by the screw. This fluctuation can lead to defects in the pipe material during the melting process, such as uneven wall thickness, excessive internal stress, and surface pitting. Utility Model Content

[0003] In order to solve the above problems, the purpose of this utility model is to provide a polyethylene pipe production melting equipment.

[0004] To solve the above technical problems, the present invention adopts the following technical solution: a polyethylene pipe production melting device, including a frame, an extruder mounted on the frame, a hopper mounted on the top of the feed frame of the extruder, a feed frame fixedly mounted on the top of the hopper, two symmetrically arranged baffles rotatably arranged inside the feed frame, the two baffles being inclined towards each other, two symmetrically arranged drive shafts located below the two baffles inside the feed frame, a striking block fixedly mounted at one end of the drive shaft inside the feed frame, two symmetrically arranged moving rods hinged to the lower surfaces of the two baffles, the ends of the moving rods away from the baffles movably penetrating through the feed frame, a connecting plate fixedly mounted between adjacent moving rods, a movable plate fixedly mounted on the side wall of one of the connecting plates, a rectangular groove penetrating through the movable plate, an arc-shaped groove arranged diagonally on the rectangular groove, a Y-shaped pushing block arranged inside the rectangular groove, the end of the pushing block abutting against the rectangular groove, and the other end of the movable plate movably inserted into the feed frame.

[0005] Preferably, one end of each of the two drive shafts passes through the feed frame and is connected by two meshing connecting gears. A second motor is fixedly installed on the outer wall of the feed frame near the drive shaft, and the output end of the second motor is coaxially fixed on the drive shaft. The striking blocks on the two drive shafts are arranged intersectingly.

[0006] Preferably, a first motor is fixedly installed on the outer wall of the feed frame below the movable plate, and a rotating shaft is fixedly installed at the middle end of the push block, with the output end of the first motor coaxially fixed on the rotating shaft.

[0007] Preferably, a protective plate is fixedly provided on the outer wall of the feed frame at the middle side wall between the two connecting plates. A drive gear is rotatably provided at the middle end of the protective plate. Two toothed plates are meshed on the drive gear and are arranged diagonally. A connecting rod is fixedly provided at the end of the toothed plate away from the drive gear. The connecting rod passes through the protective plate and is fixedly provided on the connecting plate.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. In this utility model, two sets of interlocking striking blocks are set up. Driven by a second motor, the drive shafts rotate in opposite directions in conjunction with meshing connecting gears, which can fully strike the raw materials that fall into them. This process can directly break up the agglomeration between raw material particles, preventing agglomerated raw materials from entering the extruder, reducing the problem of poor feeding caused by agglomeration from the source, ensuring that the raw materials enter the subsequent stages in a dispersed state, maintaining stable material conveying, and allowing the melting process in the extruder to proceed more evenly; 2. In this invention, the first motor drives the rotating shaft to rotate the push block. The push block, in conjunction with the rectangular and arc-shaped grooves, causes the movable plate to continuously move back and forth. This, in turn, through the connecting plate, controls the moving rod to drive the two baffles in a reciprocating motion of opening and closing. Simultaneously, the two connecting plates are connected by a gear and toothed plate assembly, allowing them to move in opposite directions, ensuring a consistent amount of raw material passing through the baffles each time. This precise feed rate control stabilizes the amount of raw material entering the striking stage, resulting in a more uniform amount of material entering the extruder screw, thus avoiding the impact of material quantity fluctuations on the extrusion process. Attached Figure Description

[0009] 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.

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0011] Figure 2 This is a schematic diagram of the feeding frame structure of this utility model.

[0012] Figure 3 This is a schematic diagram of the internal structure of the feed frame of this utility model.

[0013] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0014] Figure 5 This is a schematic diagram of the baffle structure of this utility model.

[0015] In the diagram: 1. Frame; 11. Extruder; 12. Hopper; 13. Feed frame; 14. Baffle; 15. Moving rod; 17. Connecting plate; 18. Movable plate; 19. Rectangular groove; 2. Arc groove; 21. Push block; 22. Rotating shaft; 23. First motor; 3. Protective plate; 31. Drive gear; 32. Tooth plate; 33. Connecting rod; 4. Striking block; 41. Drive shaft; 42. Connecting gear; 43. Second motor. Detailed Implementation

[0016] 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.

[0017] Example: Figure 1-5 As shown, this utility model provides a polyethylene pipe production melting device, including a frame 1, an extruder 11 mounted on the frame 1, a hopper 12 mounted on the top of the feed frame 13 of the extruder 11, a feed frame 13 fixedly mounted on the top of the hopper 12, two symmetrically arranged baffles 14 rotatably arranged inside the feed frame 13, the two baffles 14 being inclined towards each other, two symmetrically arranged drive shafts 41 located below the two baffles 14 inside the feed frame 13, a striking block 4 fixedly mounted at one end of the drive shaft 41 inside the feed frame 13, and the two baffles... Two symmetrically arranged movable rods 15 are hinged to the lower surface of the baffle 14. The end of the movable rod 15 away from the baffle 14 moves through the feed frame 13. A connecting plate 17 is fixed between the two adjacent movable rods 15. A movable plate 18 is fixed to the side wall of one of the connecting plates 17. A rectangular groove 19 is opened through the movable plate 18. An arc-shaped groove 2 is opened in the rectangular groove 19. A Y-shaped push block 21 is provided in the rectangular groove 19. The end of the push block 21 abuts against the rectangular groove 19. The other end of the movable plate 18 is movably inserted into the feed frame 13.

[0018] One end of each of the two drive shafts 41 passes through the feed frame 13 and is connected by two meshing connecting gears 42. A second motor 43 is fixedly installed on the outer wall of the feed frame 13 near the drive shaft 41. The output end of the second motor 43 is coaxially fixed on the drive shaft 41. Through the above operation, the two drive shafts 41 can rotate in opposite directions, controlling the striking block 4 to break up the falling raw materials and avoid caking and blockage.

[0019] The striking blocks 4 on the two drive shafts 41 are arranged in a crisscross pattern, which can better break up the raw materials that fall into them.

[0020] The outer wall of the feed frame 13 is fixedly equipped with a first motor 23 located below the movable plate 18. The middle end of the push block 21 is fixedly equipped with a rotating shaft 22. The output end of the first motor 23 is coaxially fixed on the rotating shaft 22. The first motor 23 mainly provides power for the rotation of the rotating shaft 22 and the push block 21, making it easy for the staff to operate.

[0021] A protective plate 3 is fixedly installed on the outer wall of the feed frame 13 at the middle side wall between the two connecting plates 17. A drive gear 31 is rotatably installed at the middle end of the protective plate 3. Two diagonally distributed toothed plates 32 are meshed on the drive gear 31. A connecting rod 33 is fixedly installed at the end of the toothed plate 32 away from the drive gear 31. The connecting rod 33 passes through the protective plate 3 and is fixedly installed on the connecting plate 17. When one of the connecting plates 17 pushes the connecting rod 33 away from the feed frame 13, the toothed plate 32 fixedly installed with the connecting rod 33 is driven away from the drive gear 31. During this process, the drive gear 31 will drive the other toothed plate 32 away from itself. Therefore, the two toothed plates 32 can be controlled to drive the connecting rod 33 and the connecting plate 17 to move in opposite directions at the same time. Conversely, the two connecting plates 17 can be controlled to move in opposite directions at the same time.

[0022] Working principle: When in use, the raw material is put into the feed frame 13 and enters the feed tube on the extruder 11 through the bottom hopper 12. It then smoothly enters the screw of the extruder 11 for mixing. The extruder 11 is equipped with a heating module to melt the raw material in the screw, allowing the raw materials to interact. After the raw material is put into the feed frame 13, the first motor 23 and the second motor 43 are started in advance. The raw material first falls through the two baffles 14 and falls onto the two sets of interlocking striking blocks 4. The start of the second motor 43, together with the two meshing connecting gears 42, causes the drive shaft 41 to rotate in opposite directions at the same time, thereby striking the raw material that has fallen into it to prevent clumping and avoid affecting the smoothness of subsequent feeding. The first motor 23 drives the rotating shaft 22 to drive the push block 21 to rotate. When the push block 21 rotates, one end of it will first abut against the rectangular groove 19. At this time, the push block 21 will push the movable plate 18 towards the side in contact with the rectangular groove 19. As it reaches the maximum path, the end of the push block 21 will rotate into the arc groove 2. At this time, the other end of the push block 21 will abut against the other side of the rectangular groove 19. At this time, the movable plate 18 will be driven to move in the opposite direction. Therefore, under the drive of the first motor 23, the movable plate 18 can be made to continuously translate back and forth. Thus, the movable plate 18 will drive the connecting plate 1. 7. The moving rods 15 at both ends control the baffles 14 to swing back and forth continuously. Since the two connecting plates 17 are connected by the gear plate 32 assembly, the two connecting plates 17 will move towards each other or away from each other at the same time, resulting in the two baffles 14 constantly opening and closing. Therefore, the above operation can control the amount of raw material passing through the two baffles 14 each time to be constant. In this way, when passing through the striking block 4, the amount is constant, which allows the striking block 4 to fully strike the batch of raw material, ensuring that the raw material is knocked and dispersed, and further ensuring that no blockage will occur later.

[0023] All standard parts used in this invention can be purchased from the market, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods of each part all adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art, and the circuit connections adopt conventional connection methods in the prior art, which will not be described in detail here. Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A polyethylene pipe production melting device, comprising a frame (1), characterized in that: An extruder (11) is mounted on the frame (1). A hopper (12) is mounted on the top of the feed frame (13) of the extruder (11). The feed frame (13) is fixedly mounted on the top of the hopper (12). Two symmetrically arranged baffles (14) are rotatably arranged inside the feed frame (13). The two baffles (14) are inclined towards each other. Two symmetrically arranged drive shafts (41) are arranged below the two baffles (14) inside the feed frame (13). A striking block (4) is fixedly arranged at one end of the drive shaft (41) inside the feed frame (13). Two symmetrically arranged... A movable rod (15) is provided. One end of the movable rod (15) away from the baffle (14) passes through the feed frame (13). A connecting plate (17) is fixedly provided between two adjacent movable rods (15). A movable plate (18) is fixedly provided on the side wall of one of the connecting plates (17). A rectangular groove (19) is provided through the movable plate (18). An arc groove (2) is provided diagonally on the rectangular groove (19). A push block (21) is provided in the rectangular groove (19) in a Y shape. The end of the push block (21) abuts against the rectangular groove (19). The other end of the movable plate (18) is movably inserted into the feed frame (13).

2. The polyethylene pipe production melting equipment as described in claim 1, characterized in that, One end of each of the two drive shafts (41) passes through the feed frame (13) and is connected by two meshing connecting gears (42). A second motor (43) is fixedly provided on the outer wall of the feed frame (13) near the drive shaft (41). The output end of the second motor (43) is coaxially fixed on the drive shaft (41).

3. The polyethylene pipe production melting equipment as described in claim 2, characterized in that, The striking blocks (4) on the two drive shafts (41) are arranged to cross each other.

4. The polyethylene pipe production melting equipment as described in claim 3, characterized in that, The outer wall of the feed frame (13) is fixedly provided with a first motor (23) below the movable plate (18), and the middle end of the push block (21) is fixedly provided with a rotating shaft (22). The output end of the first motor (23) is coaxially fixed on the rotating shaft (22).

5. A polyethylene pipe production melting device as described in claim 4, characterized in that, The outer wall of the feed frame (13) is fixedly provided with a protective plate (3) at the middle side wall between the two connecting plates (17). The protective plate (3) is provided with a drive gear (31) at the middle end. The drive gear (31) is meshed with two toothed plates (32) arranged diagonally. The toothed plate (32) is fixedly provided with a connecting rod (33) at the end away from the drive gear (31). The connecting rod (33) passes through the protective plate (3) and is fixedly provided on the connecting plate (17).

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