CN210999919U

CN210999919U - Extruder screw device for producing PE-RT (polyethylene-reverse transcription) pipe

Info

Publication number: CN210999919U
Application number: CN201921852112.4U
Authority: CN
Inventors: 马长春; 孟庆杰; 李文涛; 刘富国
Original assignee: Dongying Huanhai Plastic Co ltd
Current assignee: Dongying Huanhai Plastic Co ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-07-14
Anticipated expiration: 2029-10-31

Abstract

The utility model discloses an extruder screw rod device of production PE-RT pipe, its technical scheme is: the screw rod external fixation is equipped with a plurality of first helical blades, the screw rod external fixation is equipped with a plurality of second helical blades, and is a plurality of first helical blade is established in a plurality of second helical blade one side, the inside heating mechanism that is equipped with of screw rod. The utility model discloses a design of first heating tube, second heating tube and third heating tube can heat by the outside raw materials of screw rod, and through the different power of first heating tube, second heating tube and third heating tube again, satisfied the screw rod demand that needs different temperatures at the during operation, avoided molten state's raw materials to solidify, and then guaranteed the normal work of extruder.

Description

Extruder screw device for producing PE-RT (polyethylene-reverse transcription) pipe

Technical Field

The utility model relates to a PE-RT pipe production technical field, in particular to extruder screw rod device of production PE-RT pipe.

Background

The PE-RT pipe is commonly called as a heat-resistant polyethylene pipe, is polymerized by medium-density polyethylene and octene, has the characteristic of high-temperature resistance and freezing resistance of the PE-RT pipe, is transparent as the original color of the raw material, does not add any color master and filler, needs a PE-RT pipe screw extruder in the production of the PE-RT pipe, is an automatic feeding device, is divided into a cold feeding screw extruder and a hot feeding screw extruder, is both used for extruding rubber semi-products and products, needs to be fed with heated sizing materials, further plasticizes the sizing materials through the actions of screw extrusion, shearing, stirring and the like, is continuously extruded by n types, mainly comprises a screw, a machine barrel, a feeding machine head, a mechanism, a transmission device and the like, the quality of the extruded product can meet the process requirements, and a heat mixer is required.

In the prior art, when the screw works, because the temperature is insufficient, the raw materials in a molten state are easy to solidify, and the normal work of the extruder is influenced.

Therefore, it is necessary to develop a screw device of an extruder for producing PE-RT pipes.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned defect of prior art, the utility model provides an extruder screw rod device of production PE-RT pipe, through first heating tube, the design of second heating tube and third heating tube, can heat by the outside raw materials of screw rod, again through first heating tube, the not isopower of second heating tube and third heating tube, the demand that the screw rod needs different temperatures at the during operation has been satisfied, the raw materials of having avoided the molten condition solidifies, and then the normal work of extruder has been guaranteed, with the problem of proposing in solving above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the extruder screw device for producing the PE-RT pipe comprises a screw, wherein a plurality of first spiral blades are fixedly arranged outside the screw, a plurality of second spiral blades are fixedly arranged outside the screw, the plurality of first spiral blades are arranged on one sides of the plurality of second spiral blades, and a heating mechanism is arranged inside the screw;

the heating mechanism comprises a fixing frame, the fixing frame is arranged inside the screw rod and is connected with the screw rod through a bearing, an air channel is fixedly arranged at the top of an inner cavity of the fixing frame, the air channel extends out of one side of the fixing frame, a first heating pipe, a second heating pipe and a third heating pipe are fixedly arranged inside the fixing frame, and the first heating pipe and the third heating pipe are respectively arranged on two sides of the second heating pipe.

In a preferred embodiment, the diameter of the first helical blade is smaller than the diameter of the second helical blade.

In a preferred embodiment, the bottom of the air duct is provided with a plurality of ventilation openings.

In a preferred embodiment, the air duct is connected to an external blower.

In a preferred embodiment, the first and third heat generating pipes have the same power.

In a preferred embodiment, the second heat generating pipe has a power greater than the first and third heat generating pipes.

In a preferred embodiment, the first heat generating pipe, the second heat generating pipe and the third heat generating pipe are all arranged at the bottom of the air duct.

In a preferred embodiment, an air outlet pipe is fixedly arranged on one side of the fixing frame.

The utility model discloses a technological effect and advantage:

through the design of first heating tube, second heating tube and third heating tube, can heat by the outside raw materials of screw rod, again through first heating tube, the different power of second heating tube and third heating tube, the screw rod has been satisfied and the demand that the screw rod needs different temperatures at the during operation has, through the design in wind channel, can give the screw rod after the screw rod uses, first heating tube, second heating tube and third heating tube play a rapid cooling's effect, compare with prior art, the raw materials of having avoided the molten condition solidifies, and then the normal work of extruder has been guaranteed.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a cross-sectional view of the present invention;

FIG. 3 is an enlarged view of the portion A of FIG. 2 according to the present invention;

FIG. 4 is an enlarged view of the structure of the portion B of FIG. 2 according to the present invention;

FIG. 5 is a perspective view of a third heat-generating tube of the present invention;

the reference signs are: 1 screw rod, 2 first spiral leaf, 3 second spiral leaf, 4 fixed frames, 5 wind channels, 6 first heating tube, 7 second heating tube, 8 third heating tube, 9 vent, 10 air-out pipe.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 1-5, the utility model provides an extruder screw device for producing PE-RT pipes, which comprises a screw 1, wherein a plurality of first spiral blades 2 are fixedly arranged outside the screw 1, a plurality of second spiral blades 3 are fixedly arranged outside the screw 1, a plurality of first spiral blades 2 are arranged on one side of the plurality of second spiral blades 3, and a heating mechanism is arranged inside the screw 1;

the heating mechanism comprises a fixed frame 4, the fixed frame 4 is arranged inside a screw rod 1 and is connected with the screw rod 1 through a bearing, an air channel 5 is fixedly arranged at the top of an inner cavity of the fixed frame 4, the air channel 5 extends out of one side of the fixed frame 4, a first heating pipe 6, a second heating pipe 7 and a third heating pipe 8 are fixedly arranged inside the fixed frame 4, the first heating pipe 6 and the third heating pipe 8 are respectively arranged at two sides of the second heating pipe 7, the fixed frame 4 is fixedly connected with an extruder, electric wires required by electric elements inside the fixed frame 4 enter from one side of the fixed frame 4, and a motor driving the screw rod 1 is arranged at the other side of the screw rod 1;

the diameter of the first spiral blade 2 is smaller than that of the second spiral blade 3, so that raw materials are conveyed more uniformly;

a plurality of ventilation openings 9 are formed in the bottom of the air duct 5, so that the first heating tube 6, the second heating tube 7 and the third heating tube 8 can be rapidly cooled after use;

the air duct 5 is connected with an external blower, so that wind power can be conveniently injected into the air duct 5;

the first heating tube 6 and the third heating tube 8 have the same power, so that the raw materials are prevented from being burnt due to overlarge power;

the power of the second heating tube 7 is greater than that of the first heating tube 6 and the third heating tube 8, so that the raw materials are prevented from being solidified due to too small power;

the first heating pipe 6, the second heating pipe 7 and the third heating pipe 8 are arranged at the bottom of the air duct 5, so that the first heating pipe 6, the second heating pipe 7 and the third heating pipe 8 can be cooled after the first heating pipe 6, the second heating pipe 7 and the third heating pipe 8 work;

an air outlet pipe 10 is fixedly arranged on one side of the fixed frame 4, so that the circulation of air inside the fixed frame 4 is facilitated.

When the utility model is used, firstly, the utility model is connected with an external power supply, when the screw rod 1 works, because the feeding of the feeding hopper of the extruder is uneven, the raw material entering the screw rod 1 is not uniform enough in the earlier stage, and because the diameter of the first spiral blade 2 is smaller than that of the second spiral blade 3, when the raw material is outside the first spiral blade 2, the raw material transmission is slower, so that when the first spiral blade 2 transmits the raw material to the second spiral blade 3, the raw material transmission at the second spiral blade 3 is more uniform, then the first heating tube 6, the second heating tube 7 and the third heating tube 8 work, the first heating tube 6, the second heating tube 7 and the third heating tube 8 heat the screw rod 1, so that the original temperature of the raw material outside the screw rod 1 is always kept, the phenomenon that the raw material in a molten state is solidified to influence the normal work of the extruder is avoided, because the raw material outside the first spiral blade 2 is less, the temperature of the third heating tube 8 is low, the raw material outside the first spiral blade 2 is prevented from being burnt due to the overhigh temperature of the third heating tube 8, because one end of the screw rod 1 is close to the discharging position, in order to ensure the normal discharging of the raw material, the power of the first heating tube 6 is the same as the temperature of the third heating tube 8, and in order to ensure the normal transmission of the raw material outside the second heating tube 7, the power of the second heating tube 7 is larger than that of the first heating tube 6 and the third heating tube 8, after the screw rod 1 finishes working, the external blower can work, the blower works to transmit the wind power to the inside of the air duct 5, because the bottom of the air duct 5 is provided with a plurality of ventilation openings 9, the wind power can be blown to the first heating tube 6, the second heating tube 7 and the third heating tube 8 from the plurality of ventilation openings 9, through the design of the first heating tube 6, the second heating tube 7 and the third heating tube 8, can heat by the outside raw materials of screw rod 1, again through first heating tube 6, the different power of second heating tube 7 and third heating tube 8, the screw rod 1 demand that needs different temperatures at the during operation has been satisfied, the raw materials of having avoided the molten condition solidify, and then the normal work of extruder has been guaranteed, design through wind channel 5, can give screw rod 1 after screw rod 1 uses, first heating tube 6, second heating tube 7 and third heating tube 8 play a rapid cooling's effect, screw rod 1 is not enough at the during operation because of the temperature among this embodiment has specifically been solved prior art, make the raw materials of molten condition solidify, thereby influence the problem of the normal work of extruder.

The utility model discloses the theory of operation:

referring to the attached drawings 1-5 of the specification, when the screw 1 works, the first heating pipe 6, the second heating pipe 7 and the third heating pipe 8 heat the screw 1, the temperature of the third heating pipe 8 is low, the phenomenon that raw materials outside the first spiral blade 2 are burnt due to overhigh temperature of the third heating pipe 8 is avoided, in order to ensure normal discharging of the raw materials, the power of the first heating pipe 6 is the same as the temperature of the third heating pipe 8, in order to ensure normal conveying of the raw materials outside the second heating pipe 7, the power of the second heating pipe 7 is larger than that of the first heating pipe 6 and the third heating pipe 8, after the screw 1 works, an external blower can work, the blower works to convey wind power to the inside of the air duct 5, and the wind power can be blown to the first heating pipe 6, the second heating pipe 7 and the third heating pipe 8 from a plurality of air vents 9.

The above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an extruder screw rod device of production PE-RT pipe, includes screw rod (1), its characterized in that: a plurality of first spiral blades (2) are fixedly arranged outside the screw rod (1), a plurality of second spiral blades (3) are fixedly arranged outside the screw rod (1), the plurality of first spiral blades (2) are arranged on one sides of the plurality of second spiral blades (3), and a heating mechanism is arranged inside the screw rod (1);

heating mechanism is including fixed frame (4), establish at screw rod (1) inside and be connected through the bearing with screw rod (1) fixed frame (4) inner chamber top, fixed frame (4) inner chamber top is fixed and is equipped with wind channel (5), wind channel (5) extend fixed frame (4) one side, fixed frame (4) inside is fixed and is equipped with first heating tube (6), second heating tube (7) and third heating tube (8), establish respectively in second heating tube (7) both sides first heating tube (6) and third heating tube (8).

2. The extruder screw apparatus for producing PE-RT tube according to claim 1, wherein: the diameter of the first spiral blade (2) is smaller than that of the second spiral blade (3).

3. The extruder screw apparatus for producing PE-RT tube according to claim 1, wherein: the bottom of the air duct (5) is provided with a plurality of ventilation openings (9).

4. The extruder screw apparatus for producing PE-RT tube according to claim 1, wherein: the air duct (5) is connected with an external blower.

5. The extruder screw apparatus for producing PE-RT tube according to claim 1, wherein: the first heating pipe (6) and the third heating pipe (8) have the same power.

6. An extruder screw apparatus for producing PE-RT pipe according to claim 5, wherein: the power of the second heating tube (7) is larger than that of the first heating tube (6) and the third heating tube (8).

7. An extruder screw apparatus for producing PE-RT pipe according to claim 1, 5 or 6, characterized in that: the first heating tube (6), the second heating tube (7) and the third heating tube (8) are all arranged at the bottom of the air duct (5).

8. The extruder screw apparatus for producing PE-RT tube according to claim 1, wherein: an air outlet pipe (10) is fixedly arranged on one side of the fixing frame (4).