CN219883241U

CN219883241U - Double-screw extruder

Info

Publication number: CN219883241U
Application number: CN202321479662.2U
Authority: CN
Inventors: 张发银; 李剑
Original assignee: Chongqing Fuliang Technology Co ltd
Current assignee: Chongqing Fuliang Technology Co ltd
Priority date: 2023-06-12
Filing date: 2023-06-12
Publication date: 2023-10-24
Anticipated expiration: 2033-06-12

Abstract

The utility model discloses a double-screw extruder which comprises a base, wherein the top of the base is fixedly connected with a protective shell, a transmission assembly is arranged in the protective shell, one side surface of the protective shell is fixedly connected with a mixing bin, and the top of the mixing bin is fixedly connected with a feeding bin. According to the utility model, excessive feeding is avoided by using the feeding buffer plate, materials are conveyed to the mixing bin by using the feeding paddles, blockage of the extruder is avoided, caking and large-particle materials are crushed by using the crushing rollers, the melting effect and the product quality are improved, the materials are scattered by using the stirring paddles and fall onto the blanking buffer plate made of the magnet material, metal impurities in the materials can be adsorbed and removed, the relative positions of the first filter plate and the second filter plate can be changed by using the rotation of the filter cylinder of the filtering extrusion assembly, unmelted particles and impurities can be filtered by adjusting the relative positions to the small filter holes, the impurities can be removed by extrusion through the large filter holes, and cleaning can be realized without disassembly.

Description

Double-screw extruder

Technical Field

The utility model relates to the technical field of extruders, in particular to a double-screw extruder.

Background

The double screw extruder is widely applied to the filling, blending, modification, reinforcement of rubber and plastic and engineering resin, and the devolatilization treatment of chlorinated polypropylene and super absorbent resin; extrusion of degradable masterbatches, polyamide polycondensation and polyurethane polyaddition reactions; the double-screw extruder is developed on the basis of a single-screw extruder and has the characteristics of good feeding performance, mixing plasticizing performance, exhaust performance, extrusion stability and the like, so that the double-screw extruder has been widely applied to the molding processing of extruded products.

The twin-screw extruder is multi-purpose rubber and plastic and resin material, but wait to process the material often not of uniform size, lead to the extruder when mixing and melting the operation, melt the effect not good, often can wet the caking with depositing the in-process or mix other impurity, will influence the final extrusion effect of twin-screw extruder work under this kind of circumstances, the finished product quality is difficult to guarantee, the cost of manufacture increases, current extruder cartridge filter internally mounted has the filter screen, this cartridge filter adopts a plurality of bolts to install with the extruder body coupling, when the filter screen clearance to cartridge filter inside is needed, need demolish the whole, just can realize the clearance of filter screen, it is laborious to take time, and current twin-screw extruder often takes place to block up when the feeding, influence work efficiency, serious probably can lead to the damage of twin-screw extruder, cause huge economic loss.

Disclosure of Invention

The utility model aims to solve the technical problems that the existing double-screw extruder is slow in material melting, incomplete in melting, time and labor are wasted in replacing and cleaning a filter screen of an extruding cylinder, the material to be processed is easy to agglomerate and mix with metal impurities, the quality of an extruded product is influenced, the working efficiency is influenced by frequent blockage during feeding and operation, and the machine is damaged when serious, so that huge economic loss is caused.

In order to solve the technical problems, the utility model adopts a technical scheme that: the utility model provides a double screw extruder, which comprises a base, the top fixedly connected with protective housing of base, the inside of protective housing is provided with drive assembly, avoids drive assembly direct exposure to take place to hurt the personnel incident in the outside, one side surface fixedly connected with blending bunker of protective housing, the top fixedly connected with feeding storehouse of blending bunker, one side fixedly connected with extrusion cavity of blending bunker, the one end fixed mounting of extrusion cavity has the filtration extrusion subassembly to filter the granule that does not melt completely in the extrusion cavity, the filtration extrusion subassembly includes cartridge filter and extrusion section of thick bamboo, the cartridge filter passes through bolt fixed connection with extrusion cavity in the surface one side of extrusion cavity, uses bolted connection convenient dismantlement maintenance change, the surface one side of extrusion cavity is provided with the extrusion mouth, the extrusion port corresponds to the filter cartridge, a rotating block is fixedly connected to the outer part of the filter cartridge in a sleeved mode, a rotating groove is formed in the inner surface of the extrusion cartridge, the rotating block is installed to the inner part of the rotating groove to be connected in a rotating mode, friction generated by rotation can be reduced due to the arrangement of the rotating block and the rotating groove, tightness can be improved, a first filter plate is fixedly connected to the inner part of the filter cartridge, a screw cap is fixedly installed at the center position of the first filter plate, a second filter plate is fixedly installed in the inner part of the extrusion cartridge, a screw is arranged at the center position of the second filter plate, one end of the screw penetrates through the first filter plate and is installed in the screw cap in a threaded mode, the second filter plate is tightly attached to the first filter plate, the relative position of the second filter plate and the first filter plate can be changed through rotating the extrusion cartridge, and the size of the filter hole can be adjusted;

the outer surface of the feeding bin is fixedly provided with two crushing motors, the output ends of the two crushing motors penetrate through and extend to the inside of the feeding bin to be fixedly connected with two crushing rollers, the crushing rollers are arranged to crush large particles or damp and agglomerate materials, stirring paddles are arranged below the two crushing rollers and can stir and drive crushed materials to be processed to two sides of the stirring paddles, the stirring paddles are in rotary connection with the inner side wall of the feeding bin, the outer surface of the feeding bin is fixedly provided with the stirring motor for providing power for the stirring paddles, the stirring motor is located the below of two crushing motors, the output of stirring motor runs through the inside that extends to the feeding storehouse and is fixed connection with the one end of stirring rake, the bottom in feeding storehouse is provided with and carries the oar, and the material that waits to process that the material oar can will smash the whereabouts is constantly carried in the blending bunker, avoids causing the jam, the bottom fixed mounting of base has the second motor, the output of second motor runs through the base and extends to the inside of blending bunker and is fixed connection with the bottom of sending the oar.

Preferably, the transmission assembly comprises a driving sprocket and a driven sprocket, and the driving sprocket and the driven sprocket are sleeved with each other and meshed with a transmission chain.

Preferably, the inside rotation of extruding the cavity is connected with two extrusion paddles, the top fixed mounting of base has first motor, provides power for drive assembly, and two the one end of extrusion paddle runs through the blending bunker and extends to the inside of protective housing, the output of first motor runs through the inside that extends to the protective housing and one of them extrusion paddle be fixed connection, drive sprocket overlaps respectively with driven sprocket and establishes the outside of fixed connection at the axostylus axostyle of two extrusion paddles.

Preferably, the feed inlet has been seted up at the top in feeding storehouse, two feeding buffer plates of inside wall symmetry fixedly connected with in feeding storehouse, two the feeding buffer plate is located the below of feed inlet, sets up the feeding buffer plate and can avoid disposable feeding too much to cause the jam.

Preferably, the internal surface fixed mounting in feeding storehouse has a plurality of unloading buffer boards, and is a plurality of the unloading buffer board is located the both sides of stirring rake, and is a plurality of the unloading buffer board is magnet material, sets up the material after a plurality of unloading buffer boards can cushion smashing, and magnet material can adsorb the metallic impurity in the material, avoids hard metallic substance to get into and extrudes the cavity and influence product quality or cause the machine damage.

Preferably, the access hole has been seted up to surface one side of feeding storehouse, the outside of access hole rotates and is connected with the access cover, sets up the metal impurity on the inside maintenance and the clearance unloading buffer board that the access cover can make things convenient for feeding storehouse.

Preferably, a plurality of landing legs are fixedly connected with the bottom of base, and the landing legs can make the extruder whole more firm.

The beneficial effects of the utility model are as follows:

1. according to the utility model, through arranging components such as the feeding bin, the feeding buffer plate, the feeding paddles and the like, the feeding buffer plate fixedly arranged on the inner side wall of the feeding bin below the feeding inlet is utilized to avoid feeding blockage, the crushing roller is utilized to crush caking and large-particle materials, the stirring paddles are utilized to scatter the crushed materials and enable the crushed materials to fall onto the blanking buffer plate made of the magnet material to adsorb metal impurities therein, and the feeding paddles are utilized to continuously convey the materials to the mixing bin, so that the melting effect and efficiency of the extruder are improved, the product quality is improved, the production cost is reduced, and meanwhile, the material blockage and damage to machines due to hard metal impurities are avoided.

2. According to the utility model, the filter extrusion assembly is arranged, and the loosening and locking of the screws and nuts of the filter extrusion assembly are controlled, so that the rotation of the extrusion port is controlled, the relative positions of the first filter plate and the second filter plate are changed, the size of the filter holes is adjusted, unmelted particles and impurities are extruded, and compared with the prior art, the filter plate can be cleaned without removing a plurality of bolts to take off the filter cartridge, and the time and the labor are saved.

Drawings

FIG. 1 is a perspective view of a twin screw extruder of the present utility model;

FIG. 2 is a cross-sectional view of the feed bin and extrusion cavity location of a twin screw extruder of the present utility model;

FIG. 3 is a schematic view showing a partial structure of a twin-screw extruder according to the present utility model;

FIG. 4 is a perspective view of the position of a filter extrusion assembly of a twin screw extruder according to the present utility model;

FIG. 5 is a schematic view showing the internal structure of the position of a filtering extrusion assembly of a twin-screw extruder according to the present utility model;

FIG. 6 is a schematic structural view of a protective casing of a twin screw extruder according to the present utility model;

fig. 7 is an external view of a feed bin of a twin screw extruder of the present utility model.

In the figure: 1. a support leg; 2. a base; 3. a first motor; 4. a protective shell; 5. a feeding bin; 6. extruding the cavity; 7. a filter extrusion assembly; 8. a mixing bin; 9. a second motor; 10. a feed buffer plate; 11. a crushing roller; 12. blanking a buffer plate; 13. stirring paddles; 14. a material feeding paddle; 15. extruding a paddle; 16. a filter cartridge; 17. an extrusion barrel; 18. a bolt; 19. a screw cap; 20. a first filter plate; 21. a rotating block; 22. a rotating groove; 23. a screw; 24. a second filter plate; 25. a drive sprocket; 26. a drive chain; 27. a driven sprocket; 28. and (5) an access cover.

Detailed Description

The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present utility model.

Referring to fig. 1 to 5, the utility model comprises a base 2, the top fixedly connected with protective housing 4 of base 2, the inside of protective housing 4 is provided with drive assembly, avoid drive assembly direct exposure to take place to hurt personnel's incident, one side surface fixedly connected with blending bunker 8 of protective housing 4, the top fixedly connected with feeding storehouse 5 of blending bunker 8, one side fixedly connected with extrusion cavity 6 of blending bunker 8, the one end fixed mounting of extrusion cavity 6 has filtration extrusion subassembly 7 to filter the granule that does not completely melt in the extrusion cavity 6, filtration extrusion subassembly 7 includes cartridge filter 16 and extrusion section of thick bamboo 17, cartridge filter 16 and extrusion cavity 6 pass through bolt 18 fixed connection in the surface one side of extrusion cavity 6, use bolt 18 to connect and conveniently dismantle maintenance change, surface one side of extrusion cavity 6 is provided with the extrusion mouth, the extrusion mouth corresponds with cartridge filter 16, the outside of the filter cylinder 16 is sleeved and fixedly connected with a rotating block 21, the inner surface of the extrusion cylinder 17 is provided with a rotating groove 22, the rotating block 21 is installed in the rotating groove 22 for rotating connection, friction generated by rotation can be reduced by arranging the rotating block 21 and the rotating groove 22, tightness can be increased, a first filter plate 20 is fixedly connected in the filter cylinder 16, a screw cap 19 is fixedly installed in the central position of the first filter plate 20, a second filter plate 24 is fixedly installed in the extrusion cylinder 17, a screw 23 is arranged in the central position of the second filter plate 24, one end of the screw 23 penetrates through the first filter plate 20 and is installed in the screw cap 19 in a threaded manner, the second filter plate 24 is tightly attached to the first filter plate 20, and the relative position of the second filter plate 24 and the first filter plate 20 can be changed by rotating the extrusion cylinder 17, so that the size of a filter hole can be adjusted;

the surface fixed mounting of feeding storehouse 5 has two crushing motors, two crushing roller 11 of inside fixedly connected with that two crushing motor's output runs through and extends to feeding storehouse 5, install crushing roller 11 and can break big granule or wet the material of caking, the below of two crushing roller 11 is provided with stirring rake 13, stirring rake 13 can stir the material of waiting after smashing and beat the both sides to stirring rake 13, stirring rake 13 is connected for rotating with feeding storehouse 5's inside wall, feeding storehouse 5's surface fixed mounting has stirring motor to provide power for stirring rake 13, stirring motor is located two crushing motor's below, stirring motor's output runs through and extends to feeding storehouse 5's inside and stirring rake 13's one end be fixed connection, feeding storehouse 5's bottom is provided with feed rake 14, feed rake 14 can be with the material of waiting to process of smashing whereabouts in mixing bunker 8, avoid causing the jam, base 2's bottom fixed mounting has second motor 9, the output of second motor 9 runs through base 2 and extends to mixing bunker 8's inside and feed rake 14's bottom is fixed connection.

As shown in fig. 1, fig. 2, fig. 3, fig. 6 and fig. 7, the top of the feeding bin 5 is provided with a feeding hole, the inner side wall of the feeding bin 5 is symmetrically and fixedly connected with two feeding buffer plates 10, the two feeding buffer plates 10 are positioned below the feeding hole, the feeding buffer plates 10 are arranged to avoid blocking caused by excessive feeding at one time, the inner surface of the feeding bin 5 is fixedly provided with a plurality of blanking buffer plates 12, the plurality of blanking buffer plates 12 are positioned at two sides of the stirring paddle 13, the plurality of blanking buffer plates 12 are made of magnet materials, the plurality of blanking buffer plates 12 are arranged to buffer crushed materials to avoid blocking, the magnet materials can adsorb metal impurities in the materials to avoid hard metal substances from entering the extrusion cavity 6 to influence the product quality or cause machine damage, the transmission component comprises a driving sprocket 25 and a driven sprocket 27, the driving chain wheel 25 and the driven chain wheel 27 are sleeved and meshed with a transmission chain 26 together, the inside of the extrusion cavity 6 is rotationally connected with two extrusion paddles 15, a first motor 3 is fixedly arranged at the top of the base 2 and provides power for the transmission assembly, one end of each extrusion paddle 15 penetrates through the mixing bin 8 and extends to the inside of the protective shell 4, the output end of each first motor 3 penetrates through the inside of the protective shell 4 and is fixedly connected with one end of one extrusion paddle 15, the driving chain wheel 25 and the driven chain wheel 27 are sleeved and fixedly connected with the outside of a shaft rod of each extrusion paddle 15 respectively, an access hole is formed in one side of the surface of the feeding bin 5, an access cover 28 is rotationally connected with the outside of the access hole, the access cover 28 is convenient for internally maintaining and cleaning metal impurities on the blanking buffer plate 12 of the feeding bin 5, the bottom of the base 2 is fixedly connected with a plurality of supporting legs 1, the legs 1 can make the extruder as a whole more stable.

When the utility model is used, materials to be processed enter from a feed inlet of a feed bin 5, are crushed by a crushing roller 11 and fall onto a stirring paddle 13 after being buffered by a feed buffer plate 10, the crushed materials are fully stirred and fall onto a blanking buffer plate 12 made of a magnet material and fall onto the bottom of the feed bin 5 after being adsorbed with metal impurities, a feed paddle 14 rotates by the driving of a second motor 9, the materials at the bottom of the feed bin 5 are continuously fed into a mixing bin 8 to avoid blocking, a first motor 3 drives one of the extrusion paddles 15 and a driving sprocket 25 sleeved outside the extrusion paddles 15 to rotate, the driving sprocket 27 is driven to rotate by the meshing connection of the driving sprocket 25 and a driven sprocket 27 and a driving chain 26, the driven sprocket 27 drives the other extrusion paddle 15 to rotate, the extrusion paddles 15 convey the materials in the mixing bin 8 into an extrusion cavity 6 to be melted and conveyed to a filtering extrusion assembly 7 to be filtered and extruded, if the blockage of large particles which is not completely melted affects the extrusion efficiency, a screw driver can be used for extending into an outlet of the extrusion cylinder 17 to unscrew the screw 23, then the extrusion cylinder 17 is rotated to adjust the relative position of the second filter plate 24 and the first filter plate 20, the filter aperture is adjusted to be increased, the large particles which are not melted are discharged, after the large particles are discharged, the screw 23 can be screwed down for continuous operation after resetting, when the feeding bin 5 fails or the metal impurities on the blanking buffer plate 12 need to be cleaned, the operation can be stopped, the access cover 28 is opened for maintenance, thereby improving the melting efficiency and the effect of the extruder, ensuring the product quality, reducing the manufacturing cost, cleaning the unmelted large particles and impurities in the extrusion filter assembly without disassembly, saving time and labor, avoiding the blockage of the extruder during feeding and extrusion, the working efficiency is improved, and meanwhile, the loss caused by the fact that hard metal impurities enter a damage machine is avoided.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims

1. A twin screw extruder comprising a base (2), characterized in that: the top fixedly connected with protective housing (4) of base (2), the inside of protective housing (4) is provided with drive assembly, one side surface fixedly connected with blending bunker (8) of protective housing (4), the top fixedly connected with feeding storehouse (5) of blending bunker (8), one side fixedly connected with extrusion cavity (6) of blending bunker (8), the one end fixed mounting of extrusion cavity (6) has filtration extrusion subassembly (7), filtration extrusion subassembly (7) include cartridge filter (16) and extrusion section of thick bamboo (17), cartridge filter (16) and extrusion cavity (6) pass through bolt (18) fixed connection in the surface one side of extrusion cavity (6), an extrusion port is arranged on one side of the surface of the extrusion cavity (6), the extrusion port corresponds to the filter cartridge (16), a rotating block (21) is fixedly sleeved outside the filter cartridge (16), a rotating groove (22) is formed in the inner surface of the extrusion cartridge (17), the rotating block (21) is installed to the rotating groove (22) for internal rotation connection, a first filter plate (20) is fixedly connected inside the filter cartridge (16), a screw cap (19) is fixedly installed at the central position of the first filter plate (20), a second filter plate (24) is fixedly installed inside the extrusion cartridge (17), a screw (23) is arranged at the center of the second filter plate (24), one end of the screw (23) penetrates through the first filter plate (20) and is arranged in the screw cap (19) in a threaded manner, and the second filter plate (24) is tightly attached to the first filter plate (20);

two crushing motors are fixedly arranged on the outer surface of the feeding bin (5), two crushing rollers (11) are fixedly connected to the output ends of the two crushing motors, the two crushing rollers (11) are fixedly connected to the inside of the feeding bin (5) in a penetrating mode, stirring paddles (13) are arranged below the two crushing rollers (11), the stirring paddles (13) are rotatably connected with the inner side wall of the feeding bin (5), stirring motors are fixedly arranged on the outer surface of the feeding bin (5), the stirring motor is located the below of two crushing motors, the output of stirring motor runs through the inside that extends to feeding storehouse (5) and the one end of stirring rake (13) is fixed connection, the bottom of feeding storehouse (5) is provided with feed rake (14), the bottom fixed mounting of base (2) has second motor (9), the output of second motor (9) runs through base (2) and extends to the inside of blending bunker (8) and the bottom of feed rake (14) is fixed connection.

2. A twin screw extruder as defined in claim 1, wherein: the transmission assembly comprises a driving chain wheel (25) and a driven chain wheel (27), and a transmission chain (26) is connected with the outside of the driving chain wheel (25) and the outside of the driven chain wheel (27) in a sleeved mode.

3. A twin screw extruder as defined in claim 2, wherein: the inside rotation of extruding cavity (6) is connected with two extrusion paddles (15), the top fixed mounting of base (2) has first motor (3), two the one end of extrusion paddles (15) runs through blending bunker (8) and extends to the inside of protective housing (4), the output of first motor (3) runs through the inside that extends to protective housing (4) and one of them extrusion paddles (15) is fixed connection, driving sprocket (25) and driven sprocket (27) overlap respectively and establish the outside of fixed connection at the axostylus axostyle of two extrusion paddles (15).

4. A twin screw extruder as defined in claim 1, wherein: the feeding bin is characterized in that a feeding hole is formed in the top of the feeding bin (5), two feeding buffer plates (10) are symmetrically and fixedly connected to the inner side wall of the feeding bin (5), and the two feeding buffer plates (10) are located below the feeding hole.

5. A twin screw extruder as defined in claim 1, wherein: the feeding bin is characterized in that a plurality of blanking buffer plates (12) are fixedly arranged on the inner surface of the feeding bin (5), the blanking buffer plates (12) are located on two sides of the stirring paddles (13), and the blanking buffer plates (12) are made of magnet materials.

6. A twin screw extruder as defined in claim 1, wherein: an access hole is formed in one side of the surface of the feeding bin (5), and an access cover (28) is connected to the outside of the access hole in a rotating mode.

7. A twin screw extruder as defined in claim 1, wherein: the bottom of the base (2) is fixedly connected with a plurality of supporting legs (1).