CN221022265U

CN221022265U - Extruder without heating system

Info

Publication number: CN221022265U
Application number: CN202322097133.2U
Authority: CN
Inventors: 罗林; 王春涛; 龚雅萍; 夏帮洪
Original assignee: Zhoushan Dinghai Xiachi Machinery Co ltd; Zhejiang Ocean University ZJOU
Current assignee: Zhoushan Dinghai Xiachi Machinery Co ltd; Zhejiang Ocean University ZJOU
Priority date: 2023-08-07
Filing date: 2023-08-07
Publication date: 2024-05-28
Anticipated expiration: 2033-08-07

Abstract

The extruder without heating system includes one material cylinder with front flange, back flange and material inlet, one sealing section, one material feeding section, one pressurizing section and one extruding plasticizing section. The screw is an equal-diameter screw, the pitch of the pressurizing section is smaller than that of the feeding section, an extrusion channel is processed at equal intervals in the circumferential direction of the extrusion plasticizing section, and the section of the extrusion channel is semicircular. During operation, the raw materials reach the extrusion plasticizing section through feeding section, pressurization section, through the backward left motion of extrusion passageway, are processed into the granule by the grain cutting mechanism at the back at last, because the space of extrusion passageway and feed cylinder hole is narrow and small, the raw materials is extruded when passing through extrusion passageway, produces a large amount of heats, melts the raw materials. The device changes the state of raw materials into liquid through extrusion heat generation from solid state, realizes the grain cutting, and the device need not to install heating device at the pressurization section, simple structure, the energy consumption greatly reduced.

Description

Extruder without heating system

Technical Field

The utility model relates to an extruder without a heating system.

Background

The extruder originated in the 18 th century and was the first patent to use an archimedes screw extruder by imperial m.gray in 1879. In the next 25 years, the extrusion process has become increasingly important, and the extruder, which is increasingly operated by electric power, rapidly replaces the manual extruder in the past. The German mechanical manufacturer Paul Troestar in 1935 produced an extruder for thermoplastics. In 1939 they developed plastic extruders to a current stage, the modern single screw extruder stage.

Screw extruder is one of the most important devices for plastic molding, and it carries out solid transportation of plastic through external power transmission and heat transfer of external heating element, and compacting, melting, shearing, mixing and extrusion molding. The existing plastic melting is realized through external heating, the equipment structure is complex, and the unit energy consumption is high.

Disclosure of utility model

In view of the shortcomings in the foregoing, the present utility model provides an extruder without a heating system.

In order to achieve the purpose, the utility model provides an extruder without a heating system, which comprises a charging barrel and a screw, wherein the screw is sequentially provided with a power connecting shaft, a sealing section, a charging section, a pressurizing section and an extrusion plasticizing section from right to left, the screw is an equal-diameter screw, the pitch of the pressurizing section is smaller than that of the charging section, extrusion channels are processed at equal intervals in the circumferential direction of the extrusion plasticizing section, and the cross section of each extrusion channel is semicircular.

As a further improvement of the utility model, the charging barrel comprises a front flange, a rear flange and a charging hole.

As a further improvement of the utility model, two key grooves are symmetrically processed at the connecting shaft, and an internal thread is processed on the right side end face of the connecting shaft.

As a further improvement of the utility model, the extrusion plasticizing sections are arranged at the leftmost side of the screw in equal intervals.

As a further improvement of the utility model, the extrusion plasticizing section is arranged vertically to the central line of the screw.

As a further improvement of the utility model, the front flange is used for connecting the grain cutting mechanism, and the rear flange is used for connecting the power mechanism.

The beneficial effects of the utility model are as follows:

The device changes the state of raw materials into liquid through extrusion heat generation from solid state, realizes the grain cutting, and the device need not to install heating device at the pressurization section, simple structure, the energy consumption greatly reduced.

Drawings

FIG. 1 is a screw of an extruder without a heating system according to the present utility model;

FIG. 2 is a barrel of an extruder without a heating system according to the present utility model;

FIG. 3 is a cross-sectional view of A-A of FIG. 1;

Fig. 4 is a cross-sectional view of B-B of fig. 1.

In the figure: 1. a power connection shaft; 11. a key slot; 12. an internal thread; 2. a sealing section; 3. a feed section; 4. a pressurizing section; 5. extruding and plasticizing sections; 51. extruding the channel; 6. a charging barrel; 61. a feed inlet; 62. a front flange; 63. and a rear flange.

Detailed Description

As shown in fig. 1-4, the extruder without heating system of the present utility model comprises a barrel 6 and a screw, wherein the barrel 6 comprises a front flange 62, a rear flange 63 and a feed inlet 61, the front flange 62 is used for connecting a granulating mechanism, and the rear flange 63 is used for connecting a power mechanism. The screw rod is sequentially provided with a power connecting shaft 1, a sealing section 2, a feeding section 3, a pressurizing section 4 and an extrusion plasticizing section 5 from right to left, two key grooves 11 are symmetrically machined at the connecting shaft 1, and an internal thread 12 is machined on the right side end surface of the connecting shaft 1. The extrusion plasticizing sections 5 are arranged at the leftmost side of the screw in equal intervals, and the extrusion plasticizing sections 5 are vertically arranged with the central line of the screw. The screw is an equal-diameter screw, the pitch of the pressurizing section 4 is smaller than that of the feeding section 3, the extruding channels 51 are processed at equal intervals in the circumferential direction of the extruding plasticizing section 5, and the cross section of the extruding channels 51 is semicircular.

When in specific use, the utility model is described with reference to the drawings for convenient understanding;

During operation, raw materials are added from the feed inlet, reach extrusion plasticizing section through feed section, pressurization section, through the backward left motion of extrusion passageway, are processed into the granule by the grain cutting mechanism at the back at last, because the space of extrusion passageway and feed cylinder hole is narrow and small, the raw materials is extruded when passing through extrusion passageway, produces a large amount of heat, carries out the grain cutting after melting the raw materials.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. An extruder without a heating system, characterized in that: including feed cylinder (6) and screw rod, the screw rod is power connecting axle (1), sealed section (2), feed section (3), pressurization section (4), extrusion plasticizing section (5) from the right side to the left side in proper order, the screw rod is the constant diameter screw rod, pressurization section (4) pitch is less than feed section (3) pitch extrusion passageway (51) are processed to equidistant circumferencial direction of extrusion plasticizing section (5), the cross-sectional shape of extrusion passageway (51) is semicircle arcuation.

2. An extruder without heating system according to claim 1, wherein: the charging barrel (6) comprises a front flange (62), a rear flange (63) and a charging port (61).

3. An extruder without heating system according to claim 1, wherein: two key grooves (11) are symmetrically machined at the connecting shaft (1), and internal threads (12) are machined on the right side end face of the connecting shaft (1).

4. An extruder without heating system according to claim 1, wherein: the extrusion plasticizing sections (5) are arranged at the leftmost side of the screw rod in an equidistant manner.

5. The heating-system-free extruder of claim 4, wherein: the extrusion plasticizing section (5) is vertically arranged with the central line of the screw.

6. An extruder without heating system according to claim 2, wherein: the front flange (62) is used for being connected with a granulating mechanism, and the rear flange (63) is used for being connected with a power mechanism.