CN215661763U

CN215661763U - A single screw for a single screw extruder

Info

Publication number: CN215661763U
Application number: CN202122134246.6U
Authority: CN
Inventors: 钱芳; 王兵
Original assignee: Wuhan Suba Machine Manufacturing Co ltd
Current assignee: Wuhan Suba Machine Manufacturing Co ltd
Priority date: 2021-09-06
Filing date: 2021-09-06
Publication date: 2022-01-28
Anticipated expiration: 2031-09-06

Abstract

The utility model discloses a single screw for a single screw extruder, which comprises a barrel, a base and a gradual-change rod body, wherein the gradual-change rod body is arranged on one side in the barrel, gradual-change spiral teeth are arranged on the outer surface of the gradual-change rod body, a mixing rod body is arranged on the outer side of the gradual-change rod body, an installation plate is arranged on the outer surface of the mixing rod body, a stirring rod group is arranged on the outer surface of the installation plate, a discharging rod body is arranged at the tail end of the mixing rod body, and discharging spiral teeth are arranged on the outer surface of the discharging rod body. The utility model is convenient for raw materials to enter the spiral tooth grooves, is beneficial to raw material plasticization, can improve the mixing uniformity of the plasticized raw materials, and simultaneously ensures the stable plasticizing state of the plasticized raw materials during discharging.

Description

Single screw for single screw extruder

Technical Field

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

Background

Single screw extruders consist of an archimedes screw rotating in a heated barrel. The extruder is widely used due to simple structure, easy manufacture, high processing efficiency and low price, and is the most mature extruder type with the largest use amount in the prior art. At present, various different structural types such as damping screw blocks, exhaust screws, grooved screw barrels, pin charging barrels, building block structures and the like are developed from the original basic spiral structure of the single-screw extruder, and meanwhile, the single-screw extruder occupies small space and is a main using device in the fields of composite processing and plastic blown film.

Through mass retrieval, the single-screw extruder in the prior art is found to realize accurate material input and stable material conveying by using a single-screw extruder, typically a single-screw extruder disclosed as CN109333906A and an extruding single screw, so that the physical extrusion conveying efficiency of the single screw is improved, the stability of the amount of a molten material entering a next-stage screw and a forming die is ensured, the accurate proportion of the molten material to a foaming agent is realized, and the quality of a formed extruded sheet is ensured.

The feeding effect of a feeding end and the plasticizing effect of a raw material of a single screw for the conventional single screw extruder in the operation process are poor, so that a single screw for the single screw extruder is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a single screw for a single screw extruder, which has the advantages of facilitating raw materials to enter between spiral tooth grooves, being beneficial to raw material plasticization, improving the mixing uniformity of the plasticized raw materials, ensuring stable plasticizing state of the plasticized raw materials during discharging, and solving the problems of poor feeding effect at the feeding end and poor plasticizing effect of the raw materials in the operation process of the single screw for the conventional single screw extruder.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a single screw rod for single screw extruder, includes the barrel, base and the gradual change body of rod, the gradual change body of rod is installed to the inside one side of barrel, the gradual change body of rod surface mounting has gradual change helical tooth, the mixed body of rod is installed in the gradual change body of rod outside, mixed body of rod surface mounting has the mounting panel, mounting panel surface mounting has the puddler group, the ejection of compact body of rod is installed to mixed body of rod end, ejection of compact helical tooth is installed to the external surface mounting of ejection of compact body of rod.

Preferably, the mounting panel is equipped with four altogether, and four the mounting panel is circularized the array equidistance and is installed in the body of rod of mixing.

Preferably, the number of the stirring rod groups is four, and the four stirring rod groups are respectively arranged on the outer surfaces of the four mounting plates.

Preferably, the clamp, two have been cup jointed to barrel surface bilateral symmetry the support column is all installed to the clamp bottom, and two the support column bottom is connected in the base top.

Preferably, the inlet pipe is installed to barrel top position in the gradual change body of rod top department, the hopper is installed on the inlet pipe top.

Preferably, the tail end of the discharging rod body is provided with a discharging head.

Preferably, a speed changer is installed through the installation piece in the one side that the base top is close to the gradual change body of rod, the speed changer output passes through the shaft coupling with the terminal connection of the gradual change body of rod.

Preferably, a rotating motor is installed at the position, close to the outer side of the speed changer, of the top end of the base, and the output end of the rotating motor is connected with the input end of the speed changer.

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

1. the utility model achieves the effects of facilitating the raw materials to enter the spiral tooth spaces and facilitating the raw materials to be plasticized by arranging the gradual-change screw rod and the gradual-change spiral teeth, the gradual-change screw rod adopts a structure that the diameter is gradually changed from small to large from the feeding end to the discharging end, and the tooth space depth of the gradual-change spiral teeth is gradually reduced from the feeding end to the discharging end, so that the raw materials can conveniently enter the tooth spaces, and meanwhile, the gradual-change tooth space depth enables the pressure to be gradually increased when the raw materials are pushed, so that the raw materials are gradually pushed slowly to facilitate the plasticization of plastics.

2. According to the utility model, the mixing rod body and the stirring rod group are arranged, so that the mixing uniformity of the plasticized raw materials can be improved, and the stable plasticizing state of the plasticized raw materials during discharging can be ensured.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is a schematic view of the interior of the barrel of the present invention;

FIG. 4 is a schematic side view of the present invention.

In the figure: 1. clamping a hoop; 2. a barrel; 3. a hopper; 4. rotating the motor; 5. a transmission; 6. a coupling; 7. a base; 8. a support pillar; 9. mounting blocks; 10. a gradual change rod body; 11. gradual change helical teeth; 12. mixing the rod bodies; 13. a stirring rod group; 14. mounting a plate; 15. a discharging helical tooth; 16. a discharging rod body; 17. discharging a stub bar; 18. and (4) feeding a pipe.

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 to 4, the present invention provides a single screw technical solution for a single screw extruder: a single screw for a single screw extruder comprises a barrel body 2, a base 7 and a gradually-changed rod body 10, the gradually-changed rod body 10 is installed on one side inside the barrel body 2, gradually-changed spiral teeth 11 are installed on the outer surface of the gradually-changed rod body 10, the tooth groove depth of the gradually-changed spiral teeth 11 is gradually changed from big to small from the discharging end direction of a feeding end box, so that raw materials can conveniently fall into the tooth grooves, the gradually-changed tooth groove depth enables the pressure to be gradually increased when the raw materials are pushed, the raw materials are gradually and slowly pushed to be beneficial to the plasticization of plastics, a mixing rod body 12 is installed on the outer side of the gradually-changed rod body 10, a mounting plate 14 is installed on the outer surface of the mixing rod body 12, a stirring rod group 13 is installed on the outer surface of the mounting plate 14, a discharging rod body 16 is installed at the tail end of the mixing rod body 12, a discharging head 17 is installed at the tail end of the discharging rod body 16, the discharging head 17 is of a cone structure, the raw materials after the plasticization are beneficial to the discharging, discharging spiral teeth 15 are installed on the outer surface of the discharging rod body 16, clamp 1 has been cup jointed to 2 surface bilateral symmetry of barrel, and support column 8 is all installed to two 1 bottoms of clamp, and two 8 bottoms of support column are connected on 7 tops of base, and 2 tops of barrel are located the gradual change body of rod 10 top position department and install inlet pipe 18, and hopper 3 is installed on 18 tops of inlet pipe, and the raw materials in the hopper 3 falls into between the tooth's socket of gradual change helical tooth 11 through inlet pipe 18.

Referring to fig. 1 to 4, the present invention provides a single screw technical solution for a single screw extruder: the utility model provides a single screw rod for single screw extruder, including barrel 2, base 7 and the gradual change body of rod 10, the gradual change body of rod 10 is installed to 2 inside one sides of barrel, gradual change body of rod 10 surface mounting has gradual change helical tooth 11, the mixed body of rod 12 is installed in the gradual change body of rod 10 outside, mixed body of rod 12 surface mounting has mounting panel 14, mounting panel 14 is equipped with four altogether, and four mounting panels 14 circularize the array equidistance and install in mixed body of rod 12 surface, 14 surface mounting of mounting panel has puddler group 13, puddler group 13 is equipped with four altogether, and four puddler group 13 install respectively in four 14 surfaces of mounting panel, raw materials after the plastify enter into mixed body of rod 12 position department, puddler group 13 stirs the raw materials after the plastify, improve and mix the degree of consistency, improve the finished product quality.

Mix the 12 end of the body of rod and install ejection of compact body of rod 16, 16 outer surface mounting of the body of rod of ejection of compact body of rod has ejection of compact helical tooth 15, the pitch of ejection of compact helical tooth 15 is than the little of gradual change helical tooth 11, thereby the plastify effect when guaranteeing the raw materials ejection of compact is stable, one side that the base 7 top is close to the gradual change body of rod 10 is installed variable-speed motor 5 through installation piece 9, the terminal shaft coupling 6 connection that passes through of variable-speed motor 5 output and gradual change body of

rod

10, 7 tops of base are close to 5 outside positions departments of variable-speed motor and are installed and rotate motor 4, rotate motor 4 output and the input of variable-speed motor and connect, it drives the gradual change body of rod to rotate motor 4 to 5 power take off of variable-speed motor, the work of variable-speed motor 5 drives the gradual change body of rod 10, mix body of rod 12 and the 16 rotations of the body of the ejection of compact body of rod, accomplish the plastify and the ejection of material.

The working principle is as follows: the utility model is arranged at a place needing to be used, raw materials in a hopper 3 fall into tooth spaces of the gradual-change spiral teeth 11 through a feeding pipe 18, the tooth space depth of the gradual-change spiral teeth 11 is gradually changed from big to small from the direction of a discharging end of a feeding end box, so that the raw materials can fall into the tooth spaces conveniently, meanwhile, the pressure is gradually increased during the pushing of the raw materials due to the gradual-change tooth space depth, the raw materials are gradually and slowly pushed to be beneficial to the plasticization of plastics, and the plasticized raw materials are stirred and mixed by the stirring rod group 13 and are pushed out by the discharging rod body 16 and the discharging spiral teeth 15, so that the working process of the utility model is completed.

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 single screw for a single screw extruder, comprising a barrel (2), a base (7) and a gradient rod body (10), characterized in that: a gradient rod body ( 10), the gradient helical teeth (11) are mounted on the outer surface of the gradient rod body (10), the mixing rod body (12) is mounted on the outer surface of the gradient rod body (10), and the mounting plate is mounted on the outer surface of the hybrid rod body (12) (14), a stirring rod group (13) is installed on the outer surface of the mounting plate (14), a discharge rod body (16) is installed at the end of the mixing rod body (12), and the discharge rod body (16) is installed on the outer surface. There are discharge helical teeth (15).

2 . The single screw for a single screw extruder according to claim 1 , wherein four mounting plates ( 14 ) are provided in total, and the four mounting plates ( 14 ) form an annular array. 3 . Equidistantly installed on the outer surface of the mixing rod body (12).

3. A single screw for a single-screw extruder according to claim 1, characterized in that: the stirring rod groups (13) are provided with a total of four, and the four stirring rod groups (13) are respectively Mounted on the outer surfaces of the four mounting plates (14).

4. A single screw for a single screw extruder according to claim 1, characterized in that: the outer surface of the barrel (2) is sleeved with clamps (1) symmetrically on both sides, and two of the clamps The bottom ends of the hoop (1) are provided with support columns (8), and the bottom ends of the two support columns (8) are connected to the top ends of the base (7).

5. A single screw for a single-screw extruder according to claim 1, characterized in that: a feed pipe (18) is installed at the top of the barrel (2) at a position above the gradient rod body (10), A hopper (3) is installed at the top of the feed pipe (18).

6 . The single screw for a single screw extruder according to claim 1 , wherein a discharge head ( 17 ) is installed at the end of the discharge rod body ( 16 ). 7 .

7. A single screw for a single screw extruder according to claim 1, characterized in that: a side of the top of the base (7) close to the gradient rod body (10) is installed with a speed changer through a mounting block (9). (5), the output end of the speed changer (5) and the end of the gradient rod body (10) are connected by a coupling (6).

8. A single screw for a single screw extruder according to claim 7, characterized in that: a rotating motor (4) is installed at the top of the base (7) near the outer position of the speed changer (5), and the The output end of the rotating motor (4) is connected with the input end of the speed changer (5).