CN215344276U

CN215344276U - Double-screw extruder

Info

Publication number: CN215344276U
Application number: CN202121496783.9U
Authority: CN
Inventors: 刘攸华; 阳瑞; 陈龙藩; 陈绍军
Original assignee: Guangzhou Yongxinhua New Materials Co ltd
Current assignee: Guangdong Yongxinhua New Material Co ltd
Priority date: 2021-07-02
Filing date: 2021-07-02
Publication date: 2021-12-28
Anticipated expiration: 2031-07-02

Abstract

The utility model discloses a double-screw extruder which comprises a base, a feeder, a heat conducting pipe structure and an air driver, wherein the feeder is fixedly arranged at the top end of a reduction box, a discharge pipe is fixedly welded on one side of the bottom end of a feeding barrel, a material conveying motor is fixedly arranged on the other side of the bottom end of the discharge pipe, a shell is fixedly arranged at the other end of the material conveying motor, an air suction pipe is fixedly connected to one side of the shell, an air outlet pipe is fixedly connected to the other side of the shell, the air outlet pipe is spirally sleeved on the outer surface of the discharge pipe, the heat conducting pipe structure is fixedly connected to the other end of the air suction pipe, and the heat conducting pipe structure is fixedly sleeved on the surface of a motor. The utility model can complete the work of mixing the raw materials and solve the problem that the raw materials are attached to the inner wall of the charging barrel, and in addition, the heat generated by the work of the motor can be utilized for preheating, so that the cooling work is realized and no extra power consumption is generated.

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 developed on the basis of a single-screw extruder, has the characteristics of good feeding performance, mixing plasticizing performance, exhaust performance, extrusion stability and the like, is widely applied to the molding processing of extruded products at present, and is suitable for the work of pipe extrusion, plate and sheet extrusion, profile extrusion and the like;

however, the existing twin-screw extruder has the following defects:

(1) when different raw materials are put into the feeder, the existing extruder is not provided with a device for mixing the different raw materials, so that the raw materials are not easy to be fully mixed, and the quality of an extruded product is easy to reduce; in addition, when the raw materials are transported in the feeder, the raw materials are easy to adhere to the inner wall of the feeder, are not easy to clean and influence the work;

(2) the compounding heats after entering into the feed cylinder, and the work of preheating before here needs to use extra firing equipment, and this mode not only needs to purchase and install extra equipment, has still increased total plant's energy consumption.

SUMMERY OF THE UTILITY MODEL

The object of the present invention is to provide a twin-screw extruder to solve the problems set forth in the background art described above.

In order to achieve the purpose, the utility model provides the following technical scheme: a double-screw extruder comprises a base, a feeder, a heat conduction pipe structure and an air driver;

one end of the upper surface of the base is fixedly provided with a motor, and one end of the motor is fixedly assembled with a reduction gearbox;

the feeder is fixedly arranged at the top end of the reduction gearbox, the feeder also comprises a feeding barrel, a discharging pipe is fixedly welded on one side of the bottom end of the feeding barrel, and a material conveying motor is fixedly arranged on the other side of the bottom end of the discharging pipe;

the air driver also comprises a shell, the shell is fixedly arranged at the other end of the material conveying motor, one side of the shell is fixedly connected with an air suction pipe, the other side of the shell is fixedly connected with an air outlet pipe, and the air outlet pipe is spirally sleeved on the outer surface of the discharge pipe;

the heat conducting pipe structure is fixedly connected to the other end of the air suction pipe, and the heat conducting pipe structure is fixedly sleeved on the surface of the motor.

Furthermore, a charging barrel is fixedly assembled on the other side of the reduction gearbox, and two screws are rotatably installed in the charging barrel.

Further, the fixed welding in charging bucket top has two notes material pipes, charging bucket top fixed mounting has agitator motor.

Further, the agitator motor output is located pole in the inside equipment of charging bucket, the even fixed welding of interior pole outer wall has the puddler, the equal fixed mounting of the puddler other end has the scraper blade.

Further, a cam is rotatably mounted inside the shell and fixedly assembled with the other end of the output shaft of the material conveying motor.

Furthermore, the cam side wall is rotatably connected with a deflection rod, the other end of the deflection rod is rotatably connected with a piston rod, and the other end of the piston rod is fixedly provided with a piston.

Further, the heat pipe structure still includes and is responsible for the body, be responsible for the body with breathing pipe fixed connection, be responsible for body lateral wall equidistance fixedly connected with and divide the body, divide the body inboard equidistance fixed the offering of through-hole.

Compared with the prior art, the utility model has the beneficial effects that:

(1) all the stirring rods are driven to rotate together through the inner rod, so that the effect of mixing and stirring the raw materials is achieved; in addition, the scraper blade laminating charging bucket's inner wall removes, can strike off the raw materials that is attached to on the charging bucket inner wall, solves the problem that the raw materials is attached to the charging bucket inner wall.

(2) The pneumatic cooling device has the advantages that hot air near the motor is sucked into the main pipe body through the pneumatic driver, so that pneumatic cooling of the motor is realized, and the temperature of the motor is effectively reduced; in addition, hot-blast surface at the discharging pipe flows, can preheat the inside compounding of discharging pipe simultaneously, improves the effect that the compounding heated, and this process need not use extra power equipment, does not produce extra power consumption, saves the cost of equipment simultaneously.

Drawings

Fig. 1 is a schematic front perspective view of an embodiment of the present invention;

FIG. 2 is a schematic rear perspective view of the embodiment of FIG. 1;

FIG. 3 is a schematic cross-sectional view of the charging barrel of the embodiment of FIG. 1;

FIG. 4 is a schematic view of a portion of the enlarged structure at A in FIG. 2;

fig. 5 is a schematic sectional structural view of the housing in the embodiment of fig. 1.

Description of the drawings: 1. a base; 2. an electric motor; 3. a reduction gearbox; 4. a charging barrel; 5. a feeder; 501. a charging barrel; 502. a discharge pipe; 503. a material conveying motor; 504. a material injection pipe; 505. a stirring motor; 506. an inner rod; 507. a stirring rod; 508. a squeegee; 6. a heat conducting pipe structure; 601. a primary tube; 602. a pipe dividing body; 7. an air driver; 701. a housing; 702. an air intake duct; 703. an air outlet pipe; 704. a cam; 705. a deflection rod; 706. a piston rod; 707. a piston.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, a twin screw extruder comprises a base 1, a feeder 5, a heat pipe structure 6 and an air driver 7;

the extrusion molding machine is characterized in that a motor 2 is fixedly mounted at one end of the upper surface of the base 1, a reduction gearbox 3 is fixedly assembled at one end of the motor 2, a charging barrel 4 is fixedly assembled at the other side of the reduction gearbox 3, two screw rods are rotatably mounted in the charging barrel 4, the motor 2 is started, and after the speed of the reduction gearbox 3 is changed, the screw rods rotate in the charging barrel 4 and extrude raw materials in the charging barrel 4 to complete extrusion molding.

The feeder 5 is fixedly arranged at the top end of the reduction gearbox 3, the feeder 5 further comprises a feeding barrel 501, two material injection pipes 504 are fixedly welded at the top end of the feeding barrel 501, different types of raw materials are added into the feeding barrel 501 through the material injection pipes 504, a stirring motor 505 is fixedly arranged at the top end of the feeding barrel 501, an inner rod 506 is assembled at the output end of the stirring motor 505 and positioned inside the feeding barrel 501, stirring rods 507 are uniformly and fixedly welded on the outer wall of the inner rod 506, then the stirring motor 505 is started, the inner rod 506 drives all the stirring rods 507 to rotate together, so that the raw material mixing and stirring effect is achieved, scrapers 508 are fixedly arranged at the other end of each stirring rod 507, meanwhile, the scrapers 508 are attached to the inner wall of the feeding barrel 501 to move, so that the raw materials attached to the inner wall of the feeding barrel 501 can be scraped, and the problem that the raw materials are attached to the inner wall of the feeding barrel 501 is solved, add the fixed welding of charging barrel 501 bottom one side and have discharging pipe 502, discharging pipe 502 bottom opposite side fixed mounting has fortune material motor 503, and after the raw materials mixes, inside fortune material motor 503 work sent the compounding into discharging pipe 502, transported to inside the feed cylinder 4 at last.

The pneumatic transmission device 7 further comprises a housing 701, the housing 701 is fixedly installed at the other end of the material conveying motor 503, a cam 704 is rotatably installed inside the housing 701, the material conveying motor 503 adopts a double-shaft motor, so that the cam 704 can be driven to rotate inside the housing 701 at the same time, the cam 704 is fixedly assembled with the other end of the output shaft of the material conveying motor 503, a deflection rod 705 is rotatably connected to the side wall of the cam 704, a piston rod 706 is rotatably connected to the other end of the deflection rod 705, a piston 707 is fixedly installed at the other end of the piston rod 706, the piston rod 706 drives the piston 707 to move in a reciprocating manner by the cam 704, so that positive and negative pressure is continuously formed inside the housing 701, a suction pipe 702 is fixedly connected to one side of the housing 701, an air outlet pipe 703 is fixedly connected to the other side of the housing 701, so that air is continuously sucked through the suction pipe 702, the gas is then forced into the outlet pipe 703.

The heat conducting pipe structure 6 is fixedly connected to the other end of the air suction pipe 702, the heat conducting pipe structure 6 is fixedly sleeved on the surface of the motor 2, the heat conducting pipe structure 6 further comprises a main pipe 601, the main pipe 601 is fixedly connected with the air suction pipe 702, the side wall of the main pipe body 601 is fixedly connected with branch pipe bodies 602 at equal intervals, through holes are fixedly arranged at the inner sides of the branch pipe bodies 602 at equal intervals, hot air near the motor 2 is sucked into the main pipe body 601 through the through hole on the discharge pipe body 602 and finally flows into the air outlet pipe 703, the process can realize pneumatic cooling of the motor 2 and effectively reduce the temperature of the motor 2, the air outlet pipe 703 is spirally sleeved on the outer surface of the discharge pipe 502, in addition, hot-blast surface at discharging pipe 502 flows, can preheat the compounding of discharging pipe 502 inside simultaneously, improves the effect that the compounding was heated.

In summary, the twin-screw extruder provided by the utility model, when in operation, firstly: adding different types of raw materials into the charging barrel 501 through the material injection pipe 504, then starting the stirring motor 505, driving all the stirring rods 507 to rotate together by the inner rod 506, thereby completing the effect of mixing and stirring the raw materials, meanwhile, the scraper 508 is attached to the inner wall of the charging barrel 501 to move, so that the raw materials attached to the inner wall of the charging barrel 501 can be scraped, the problem that the raw materials are attached to the inner wall of the charging barrel 501 is solved, after the raw materials are mixed, the material conveying motor 503 works to convey the mixed materials into the discharging pipe 502, and finally the mixed materials are conveyed into the charging barrel 4, the motor 2 is started, after the speed change of the reduction box 3, the screw rod is rotated in the charging barrel 4, meanwhile, the raw materials in the charging barrel 4 are extruded, and the extrusion molding work is completed;

further: because the material conveying motor 503 adopts a double-shaft motor, the cam 704 can be driven to rotate in the shell 701 at the same time, the piston rod 706 is driven by the cam 704 to perform reciprocating deflection motion, so that the piston rod 706 drives the piston 707 to perform reciprocating motion, so as to continuously form positive and negative pressure in the shell 701, and thus continuously suck air through the air suction pipe 702, extrude the air into the air outlet pipe 703, through the through hole on the tube dividing body 602, the hot air near the motor 2 is sucked into the main tube body 601 and finally flows into the air outlet pipe 703, the process can realize pneumatic cooling of the motor 2, effectively reduce the temperature of the motor 2, in addition, hot air flows on the outer surface of the discharge pipe 502, so that the mixed material in the discharge pipe 502 can be preheated at the same time, the mixed material heating effect is improved, in addition, no additional power equipment is needed in the process, no additional power consumption is generated, and the cost of the equipment is saved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A twin-screw extruder is characterized by comprising a base (1), a feeder (5), a heat conduction pipe structure (6) and an air driver (7);

a motor (2) is fixedly installed at one end of the upper surface of the base (1), and a reduction gearbox (3) is fixedly assembled at one end of the motor (2);

the feeder (5) is fixedly arranged at the top end of the reduction gearbox (3), the feeder (5) further comprises a feeding barrel (501), a discharge pipe (502) is fixedly welded on one side of the bottom end of the feeding barrel (501), and a material conveying motor (503) is fixedly arranged on the other side of the bottom end of the discharge pipe (502);

the air driver (7) further comprises a shell (701), the shell (701) is fixedly installed at the other end of the material conveying motor (503), one side of the shell (701) is fixedly connected with an air suction pipe (702), the other side of the shell (701) is fixedly connected with an air outlet pipe (703), and the air outlet pipe (703) is spirally sleeved on the outer surface of the discharge pipe (502);

the heat conducting pipe structure (6) is fixedly connected to the other end of the air suction pipe (702), and the heat conducting pipe structure (6) is fixedly sleeved on the surface of the motor (2).

2. The twin-screw extruder according to claim 1, characterized in that a barrel (4) is fixedly assembled on the other side of the reduction gearbox (3), and two screws are rotatably mounted in the barrel (4).

3. The twin-screw extruder according to claim 1, wherein two injection pipes (504) are fixedly welded on the top end of the feeding barrel (501), and a stirring motor (505) is fixedly mounted on the top end of the feeding barrel (501).

4. The twin-screw extruder according to claim 3, characterized in that an inner rod (506) is assembled inside the feeding barrel (501) at the output end of the stirring motor (505), stirring rods (507) are uniformly and fixedly welded on the outer wall of the inner rod (506), and scrapers (508) are fixedly mounted at the other ends of the stirring rods (507).

5. Twin-screw extruder according to claim 4, characterised in that a cam (704) is rotatably mounted inside the housing (701), the cam (704) being fixedly assembled with the other end of the output shaft of the material-conveying motor (503).

6. Twin-screw extruder according to claim 5, characterised in that a deflection rod (705) is rotatably connected to the side wall of the cam (704), a piston rod (706) is rotatably connected to the other end of the deflection rod (705), and a piston (707) is fixedly mounted to the other end of the piston rod (706).

7. The twin-screw extruder according to claim 1, wherein the heat conducting pipe structure (6) further comprises a main pipe body (601), the main pipe body (601) is fixedly connected with the air suction pipe (702), the side wall of the main pipe body (601) is fixedly connected with branch pipe bodies (602) at equal intervals, and through holes are fixedly formed in the inner sides of the branch pipe bodies (602) at equal intervals.