Screw extruder for chemical fiber raw materials

Abstract

The utility model relates to the technical field of chemical fiber production, and discloses a screw extruder for chemical fiber raw materials, which comprises screw extrusion equipment for extruding waste plastics into chemical fibers, and a feeding device is arranged on the screw extrusion equipment; the feeding device comprises a mixed feeding mechanism and a plurality of groups of feeding mechanisms; the mixing and feeding mechanism comprises a mixing hopper, a feeding screw rod and a feeding motor; the feeding mechanism comprises a horizontal feeding cylinder, a feeding screw rod, a feeding motor and a feeding hopper; the feeding mechanism is used for conveying different waste plastics into a mixing hopper of the mixing and feeding mechanism; and the feeding screw rod is detachably mounted on the inner side of the horizontal feeding cylinder. The feeding mechanism is used for conveying different waste plastics into the mixing hopper to be mixed, the mixing feeding mechanism is used for fully mixing different types of waste plastics, the uniformity of raw materials is ensured, the detachable design of the feeding screw enables the maintenance and cleaning work of the equipment to be more convenient, the downtime is shortened, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to chemical fiber production technical field, concretely relates to a screw extruder for chemical fiber raw material. BACKGROUND

[0002] With the improvement of environmental awareness and the development of plastic recycling technology, the recycling of waste plastics has become an important topic. At present, the method of crushing and melting the recycled plastic waste such as mineral water bottles to make chemical fibers for the field of home textiles has been widely used. In the production process of chemical fiber raw materials, screw extruder, as one of the key equipment, is used to extrude waste plastics into chemical fiber raw materials. The traditional screw extruder usually includes feeding device, extrusion chamber, screw and other components. These devices play an important role in the process of converting waste plastics into chemical fiber raw materials.

[0003] The feeding device of the existing screw extruder often directly mixes and transports through the mixing screw, which cannot effectively mix different types of waste plastics, resulting in uneven mixing of raw materials and affecting the quality of the final product. Due to the insufficient stability of the feeding mechanism, the material may vibrate and shift during transportation, affecting the continuity and stability of feeding. The structural design of the existing equipment makes it difficult to disassemble the feeding screw, increasing the difficulty of maintenance and cleaning, resulting in a longer downtime and affecting production efficiency.

[0004] In order to solve the above-mentioned defects of the prior art, a screw extruder for chemical fiber raw material is proposed. CONTENT OF THE UTILITY MODEL

[0005] The technical problem to be solved by the present application is that the feeding device of the extruder directly mixes and transports through the mixing screw in the prior art, which cannot effectively mix different types of waste plastics, resulting in uneven mixing of raw materials, and the screw is fixedly installed, which is inconvenient to disassemble and clean.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A screw extruder for chemical fiber raw material, comprising a screw extrusion device for extruding waste plastics into chemical fibers, and a feeding device for feeding waste plastics into the extrusion chamber of the screw extrusion device;

[0008] The feeding device comprises a mixing feeding mechanism and a plurality of feeding mechanisms. The mixing feeding mechanism comprises a mixing hopper, a feeding screw and a feeding motor. The feeding mechanism comprises a horizontal feeding cylinder located outside the mixing hopper, a feeding screw, a feeding motor and a feeding hopper. The feeding mechanism is used to transport different waste plastics into the mixing hopper of the mixing feeding mechanism.

[0009] The feeding screw is detachably installed on the inside of the horizontal feeding cylinder.

[0010] As preferred, the mixing hopper comprises a hopper barrel and a straight barrel connected to the bottom of the hopper barrel, the top of the hopper barrel is provided with a cover plate, the feeding motor is fixed on the top of the cover plate and drives the feeding screw to rotate, and the feeding screw is located in the straight barrel.

[0011] As preferred, the feeding screw is fixedly connected with a rotating shaft fixedly arranged in the hopper barrel, the input end of the rotating shaft is in transmission connection with the output end of the feeding motor, and the rotating shaft is provided with two mixing plates symmetrically arranged and close to the inner wall of the hopper barrel, and each mixing plate is fixedly connected with the rotating shaft through two connecting rods.

[0012] The fixed connection of the feeding screw with the rotating shaft and the two mixing plates on the rotating shaft can provide additional stirring and mixing during the feeding of the material, increase the mixing intensity and ensure that the material is mixed more uniformly.

[0013] As preferred, the discharge port of the feeding hopper is connected with the feeding port of the horizontal feeding barrel, and the fixed frame on the horizontal feeding barrel is mounted on the hopper barrel.

[0014] As preferred, the end of the horizontal feeding barrel is integrally formed with a butt joint block, the input end of the butt joint block is provided with a limiting groove for limiting insertion of a bearing matched with the end of the feeding screw, the round block A at the end of the feeding screw rotates on the inner side of the bearing, the outer end surface of the round block A is annularly and equidistantly arranged with a plurality of clamping blocks A, and a clamping groove is formed between adjacent two clamping blocks A.

[0015] As preferred, the butt joint block is rotatably connected with a sealing cover matched with the sealing cover through a rotating connecting shaft, and the sealing cover is buckled with the butt joint block through a lock catch; the feeding motor is fixed on the sealing cover, the inner side of the sealing cover is provided with a round block B fixedly connected with the output shaft of the feeding motor, the round block B is provided with a clamping block B clamped in the clamping groove, and the inner side of the sealing cover and located at the outer side of the round block B is fixedly provided with a pressing ring for pressing and fixing the bearing in the limiting groove.

[0016] The arrangement of the lock catch and the rotating connecting shaft enables the sealing cover to be opened or closed relative to the butt joint block, when closed, the pressing ring presses and fixes the bearing in the limiting groove, the clamping block B is clamped in the clamping groove, the feeding motor drives the round block B to rotate and in turn drives the feeding screw to rotate, and the material fed from the feeding hopper into the horizontal feeding barrel is transported into the horizontal feeding barrel, so that the feeding screw is convenient to install and disassemble.

[0017] Compared with the prior art, the technical effects and advantages of the utility model are:

[0018] The mixing and feeding mechanism in the screw extruder for chemical fiber raw materials can fully mix different types of waste plastics and ensure the uniformity of the raw materials, thereby improving the quality of the final chemical fiber products.

[0019] The feeding mechanism comprises a horizontal feeding cylinder, a feeding screw and a feeding motor, which are used for conveying different waste plastics into the mixing hopper for mixing, the detachable design of the feeding screw makes the maintenance and cleaning work of the equipment more convenient, reduces the downtime and improves the production efficiency.

[0020] The conveying into the mixing hopper effectively solves the problems of poor mixing effect, unstable feeding and difficult maintenance and cleaning in the prior art, and provides a more efficient, stable and convenient maintenance solution for the recycling of waste plastics. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structural schematic view of the utility model;

[0022] Figure 2 It is a structural schematic view of the feeding device of the utility model;

[0023] Figure 3 It is a sectional view of the mixing feeding mechanism of the utility model;

[0024] Figure 4 It is a structural schematic view of the feeding mechanism of the utility model;

[0025] Figure 5 It is a structural schematic view of the utility model when the sealing cover on the feeding mechanism is opened.

[0026] In the figure: 1, screw extrusion equipment; 2, feeding device; 3, mixing feeding mechanism; 31, mixing hopper; 32, feeding screw; 33, feeding motor; 34, hopper cylinder; 35, straight cylinder; 36, cover plate; 37, rotating shaft; 38, mixing plate; 39, connecting rod; 4, feeding mechanism; 41, horizontal feeding cylinder; 42, feeding screw; 43, feeding motor; 44, feeding hopper; 45, butt joint block; 46, bearing; 47, limiting groove; 48, round block A; 49, clamping block A; 410, clamping groove; 411, rotating connecting shaft; 412, sealing cover; 413, lock catch; 414, round block B; 415, clamping block B; 416, pressing ring; 417, fixing frame. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0028] The following will be combined with the drawings in the embodiments of the utility model Figures 1-5Further details of the application are described below,

[0029] The screw extruder for chemical fiber raw materials disclosed by the embodiment of the application comprises a screw extrusion device 1 for extruding waste plastics into chemical fibers, wherein the screw extrusion device 1 is provided with a feeding device 2 for feeding the waste plastics into the extrusion chamber of the screw extrusion device 1.

[0030] The feeding device 2 comprises a mixing feeding mechanism 3 and a plurality of groups of feeding mechanisms 4.

[0031] The mixing feeding mechanism 3 comprises a mixing hopper 31, a feeding screw 32 and a feeding motor 33. The mixing hopper 31 comprises a hopper barrel 34 and a straight barrel 35 connected to the bottom of the hopper barrel 34, the top of the hopper barrel 34 is provided with a cover plate 36, the feeding motor 33 is fixed to the top of the cover plate 36 and drives the feeding screw 32 to rotate, and the feeding screw 32 is located in the straight barrel 35. The hopper barrel 34 is provided with the cover plate 36 at the top, which helps to seal the hopper and reduce the loss of materials during the mixing process. The use of the hopper barrel 34 in cooperation with the straight barrel 35 can enhance the conveying and mixing effect of the materials and ensure that the materials are fully mixed before entering the feeding screw 32. The arrangement of the straight barrel 35 enables the materials to smoothly enter the feeding screw 32, improving the accuracy and stability of feeding.

[0032] The feeding screw 32 is fixedly connected with a rotating shaft 37 fixedly arranged in the hopper barrel 34, the input end of the rotating shaft 37 is in transmission connection with the output end of the feeding motor 33, and the rotating shaft 37 is provided with two mixing plates 38 symmetrically arranged and close to the inner wall of the hopper barrel 34, and each mixing plate 38 is fixedly connected with the rotating shaft 37 through two connecting rods 39.

[0033] The fixed connection of the feeding screw 32 with the rotating shaft 37 and the two mixing plates 38 on the rotating shaft 37 can provide additional stirring and mixing during the feeding of the materials, increase the mixing intensity and ensure that the materials are mixed more uniformly. The design of the mixing plates 38 helps to break the agglomeration of the materials, fully mixes different plastics from the feeding mechanisms 4, reduces material congestion, improves the feeding efficiency and thus improves the overall production efficiency.

[0034] The feeding mechanism 4 comprises a horizontal feeding barrel 41 located outside the mixing hopper 31, a feeding screw 42, a feeding motor 43 and a feeding hopper 44; the feeding mechanism 4 is used for conveying different waste plastics into the mixing hopper 31 of the mixing feeding mechanism 3; and the feeding screw 42 is detachably installed on the inside of the horizontal feeding barrel 41.

[0035] The outlet of the feeding hopper 44 is connected with the inlet of the horizontal feeding cylinder 41, and the fixing frame 417 on the horizontal feeding cylinder 41 is mounted on the hopper cylinder 34. The fixing frame 417 on the horizontal feeding cylinder 41 is mounted on the hopper cylinder 34, which increases the stability of the whole feeding system and avoids the vibration and displacement problems that may occur during the material conveying process.

[0036] The end of the horizontal feeding cylinder 41 is integrally formed with a docking block 45, the input end of the docking block 45 is provided with a limiting groove 47 for limiting insertion of the bearing 46 matched with the end of the feeding screw 42, the round block A 48 at the end of the feeding screw 42 rotates on the inner side of the bearing 46, and the outer end surface of the round block A 48 is annularly and equidistantly arranged with a plurality of clamping blocks A 49, and a clamping groove 410 is formed between adjacent two clamping blocks A 49.

[0037] The docking block 45 is rotatably connected with a sealing cover 412 matched with the sealing cover through a rotating connecting shaft 411, and the sealing cover 412 is buckled with the docking block 45 through a lock buckle 413 on the side away from the rotating connecting shaft 411; the feeding motor 43 is fixed on the sealing cover 412, the inner side of the sealing cover 412 is provided with a round block B 414 fixedly connected with the output shaft of the feeding motor 43, the round block B 414 is provided with a clamping block B 415 clamped into the clamping groove 410, and the inner side of the sealing cover 412 and located on the outer side of the round block B 414 is fixedly provided with a pressing ring 416 for pressing and fixing the bearing 46 in the limiting groove 47.

[0038] The arrangement of the lock buckle 413 and the rotating connecting shaft 411 enables the sealing cover 412 to be opened or closed relative to the docking block 45, when closed, the pressing ring 416 presses and fixes the bearing 46 in the limiting groove 47, the clamping block B 415 is clamped into the clamping groove 410, the feeding motor 43 drives the round block B 414 to rotate and in turn drives the feeding screw 42 to rotate, and the material fed from the feeding hopper 44 into the horizontal feeding cylinder 41 is conveyed into the horizontal feeding cylinder 41, so that the feeding screw 42 is convenient to install and disassemble.

[0039] The sealing cover 412 can be opened or closed relative to the docking block 45, which provides convenience for maintenance and cleaning, and also makes the equipment design more flexible and can adapt to different production needs. The arrangement of the pressing ring 416 can ensure that the bearing 46 is correctly pressed and fixed in the limiting groove 47, which can protect the bearing 46 from wear and damage, thereby prolonging the service life of the bearing 46, and can make the feeding motor 43 drive the feeding screw 42 to rotate.

[0040] The screw extruder for the chemical fiber raw material, the mixing hopper 31, the feeding screw 32 and the feeding motor 33 in the mixing feeding mechanism 3 can uniformly mix different kinds of waste plastics, ensure the uniformity of the raw material, and thus improve the quality of the final chemical fiber product. The feeding mechanism 4 includes a horizontal feeding cylinder 41, a feeding screw 42 and a feeding motor 43. Since the feeding mechanism 4 can process different waste plastics, this design can effectively deliver different waste plastics to the mixing hopper 31, improving the continuity and efficiency of feeding.

[0041] The feeding screw 42 is detachably installed on the inner side of the horizontal feeding cylinder 41, facilitating the maintenance and cleaning of the equipment. When the screw needs to be replaced or cleaned, the operation can be quickly performed, reducing the downtime.

[0042] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can be modified to the technical solutions recorded in the foregoing embodiments, or equivalent replacement of some of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included within the scope of the present application.

Claims

1. A screw extruder for chemical fiber raw materials, comprising a screw extrusion device (1) for extruding waste plastics into chemical fibers, characterized in that: The screw extrusion equipment (1) is equipped with a feeding device (2) for feeding waste plastic into the extrusion chamber of the screw extrusion equipment (1); The feeding device (2) includes a mixing feeding mechanism (3) and several sets of feeding mechanisms (4); the mixing feeding mechanism (3) includes a mixing hopper (31), a feeding screw (32), and a feeding motor (33); the feeding mechanism (4) includes a horizontal feeding cylinder (41) located outside the mixing hopper (31), a feeding screw (42), a feeding motor (43), and a feeding hopper (44); the feeding mechanism (4) is used to transport different waste plastics into the mixing hopper (31) of the mixing feeding mechanism (3); The feed screw (42) is detachably installed on the inside of the horizontal feed cylinder (41).

2. The screw extruder for chemical fiber raw materials according to claim 1, characterized in that: The mixing hopper (31) includes a hopper-shaped cylinder (34) and a straight cylinder (35) connected to the bottom of the hopper-shaped cylinder (34). The top of the hopper-shaped cylinder (34) is provided with a cover plate (36). The feeding motor (33) is fixed on the top of the cover plate (36) and drives the feeding screw (32) to rotate. The feeding screw (32) is located inside the straight cylinder (35).

3. The screw extruder for chemical fiber raw materials according to claim 2, characterized in that: The feeding screw (32) is fixedly connected to the rotating shaft (37) fixedly installed inside the bucket-shaped material cylinder (34). The input end of the rotating shaft (37) is connected to the output end of the feeding motor (33). The rotating shaft (37) is provided with two mixing plates (38) symmetrically arranged and close to the inner wall of the bucket-shaped material cylinder (34). Each mixing plate (38) is fixedly connected to the rotating shaft (37) through two connecting rods (39).

4. The screw extruder for chemical fiber raw materials according to claim 1, characterized in that: The discharge port of the feed hopper (44) is connected to the feed port of the horizontal feed cylinder (41), and the fixing frame (417) on the horizontal feed cylinder (41) is installed on the bucket-shaped feed cylinder (34).

5. The screw extruder for chemical fiber raw materials according to claim 1, characterized in that: The horizontal feed cylinder (41) has an integrally formed connecting block (45) at the end. The input end of the connecting block (45) is provided with a limiting groove (47) for the bearing (46) at the end of the feed screw (42) to be inserted. The circular block A (48) at the end of the feed screw (42) rotates inside the bearing (46). Several locking blocks A (49) are arranged in a ring at equal intervals on the outer end face of the circular block A (48). A locking groove (410) is formed between two adjacent locking blocks A (49).

6. The screw extruder for chemical fiber raw materials according to claim 5, characterized in that: The docking block (45) is rotatably connected to a sealing cover (412) that fits its sealing cover via a rotating connecting shaft (411). The side of the sealing cover (412) away from the rotating connecting shaft (411) is fastened to the docking block (45) by a latch (413). The feeding motor (43) is fixed on the sealing cover (412). The inner side of the sealing cover (412) is provided with a round block B (414) that is fixedly connected to the output shaft of the feeding motor (43). The round block B (414) is provided with a locking block B (415) that is inserted into the locking groove (410). The inner side of the sealing cover (412) and the outer side of the round block B (414) are fixedly provided with a pressure ring (416) that presses and fixes the bearing (46) in the limiting groove (47).

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