CN207901645U

CN207901645U - A kind of double screw extruder

Info

Publication number: CN207901645U
Application number: CN201820248326.XU
Authority: CN
Inventors: 吴龙解
Original assignee: Xiamen Keaisi Plastics Technology Co Ltd
Current assignee: COEs Chemical Co.,Ltd.
Priority date: 2018-02-11
Filing date: 2018-02-11
Publication date: 2018-09-25
Anticipated expiration: 2028-02-11

Abstract

The utility model discloses a kind of double screw extruders, are related to extruder technology field, its key points of the technical solution are that：Including holder, the fuselage being fixedly connected on holder and the twin-screw being arranged in fuselage, described fuselage one end is fixedly connected with spout, the fuselage other end is provided with discharge port, the fuselage includes multiple machine barrels being arranged in series, it is both provided with one of exhaust outlet on each road machine barrel, the fuselage upper end is provided with an exhaust pipe, the first branch pipe of more connections each road exhaust outlets and exhaust pipe is provided on exhaust pipe, two vacuum pumps are added on exhaust pipe, and two the second branch pipes that setting is connected to vacuum pump are provided on exhaust pipe；Vacuum pump is enable to carry out pumping work to each operating position of double screw extruder by the cooperation of the first branch pipe, the second branch pipe and exhaust pipe, for single-point pumping, pumping effect is more preferable.

Description

A kind of double screw extruder

Technical field

The utility model is related to extruder technology fields, more specifically, it relates to a kind of double screw extruder.

Background technology

In the production process of film, it is that powder is packed into feedstock barrel, passes through extruder for shaping.But it is squeezing out During, due to the presence of melt small molecule and moisture, and powder will produce part volatile organic in the molten state Close object so that the admixture of gas that aqueous vapor and volatile organic compounds are had in machine barrel can cause centainly the quality of product Influence, the method for being usually removed admixture of gas be on machine barrel increase a vacuum pump admixture of gas is taken away, still Vacuum extractor needs are periodically safeguarded, and only complete equipment can just remain in operation after safeguarding completion, in this way It can cause the delay of manufacturing schedule.

Application publication number be CN102285089A Chinese patent disclose a kind of double screw extruder, including spout with And the twin-screw being arranged in machine barrel, exhaust outlet is provided on the twin-screw, exhaust outlet is vacuumized by exhaust pipe connection The first vacuum pump, the exhaust pipe have exhaust manifold, the exhaust manifold connect the second vacuum pump, described first The front end of vacuum pump and the second vacuum pump is respectively arranged with the first valve and the second valve.

When normal work, the first, second valve can be opened, two sets of vacuum pumps is made all to work, needs to tie up when wherein a set of It is another set of to can continue to work when shield or stopping；But double screw extruder is when working, powder in the molten state each A stage will produce volatile organic compounds, be difficult by powder by exhaust pipe, the first vacuum pump and the second vacuum pump The volatile organic compounds inside contained is completely drawn out so that the quality of product can still be affected.

Utility model content

In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of double screw extruder, have Realize the effect of better gas bleeding mixture in twin-screw extruder extrusion process.

To achieve the above object, the utility model provides following technical solution：

A kind of double screw extruder, including holder, the fuselage being fixedly connected on holder and pair being arranged in fuselage Screw rod, described fuselage one end are fixedly connected with spout, and the fuselage other end is provided with discharge port, and the fuselage includes multiple The machine barrel being arranged in series is both provided with one of exhaust outlet on each road machine barrel, and the fuselage upper end is provided with an exhaust pipe, row It is provided with the first branch pipe of more connections each road exhaust outlets and exhaust pipe on tracheae, two vacuum pumps are added on exhaust pipe, Two the second branch pipes that setting is connected to vacuum pump are provided on exhaust pipe.

So set, passing through the cooperation of the first branch pipe and exhaust pipe so that be connected to setting with exhaust pipe by the second branch pipe Vacuum pump can carry out pumping work to each road cylinder, to realize more preferably more fully be evacuated effect so that product is more It is solid.

Further setting：It is both provided with the first shut-off valve on each first branch pipe.

So set, being made it possible to according to actual needs using the first shut-off valve to select the position of pumping so that work Range is wider.

Further setting：It is both provided with the second shut-off valve on each second branch pipe.

So set, when a wherein vacuum pump is needed to suspend and be safeguarded, it can be close by the second branch pipe by the second cut-off Envelope, another can work on, and will not delay manufacturing schedule, and will not extract air outward by the second branch pipe.

Further setting：The exhaust pipe includes multistage transverse tube, is connected to by T shape pipes between two transverse tubes being disposed adjacent Setting, the first branch pipe of each road and the second branch pipe, which are connected to by the roads T Xing Guanyuge transverse tube, to be arranged.

So set, when part transverse tube, the first branch pipe or the second branch pipe damage, can be incited somebody to action by detaching T shape pipes The pipeline of damage carries out dismounting and change, all disassembles exhaust pipe, the second branch pipe and the first branch pipe without needing to change, and saves Replacing construction.

Further setting：It is fastenedly connected by clip between the T shapes pipe and other pipelines.

So set, using clip ensure between T shapes pipe and other pipelines the case where being fastenedly connected, avoid shedding Occur.

Further setting：Cooling tube is arranged in first pipe outer wall, water inlet, institute is arranged in the cooling tube lower end It states cooling tube upper end and is provided with water outlet.

So set, carrying a large amount of heat when admixture of gas is extracted, one can be caused to vacuum pump after long-time service Fixed damage, causes service life of vacuum pump to reduce, by water inlet to inputting cold water in cooling tube, then in the first branch pipe Admixture of gas cool down, to prevent damage of the high-temperature gas to vacuum pump.

Further setting：It is both provided with sealing ring between the cooling tube upper and lower ends and a pipe outer wall.

So set, avoiding gap leakage of the cooling water between cooling tube and the first branch pipe.

Further setting：It is provided with connector on the machine barrel, is provided on the connector and is plugged in for the first branch pipe Through-hole in exhaust outlet is provided with refractory seals set between first branch pipe and through-hole.

So set, pushing double screw extruder to replace operating position convenient for staff.

Further setting：The pedestal lower end is provided with multiple adjusting lower margins.

So set, making double screw extruder that can also keep horizontal on broken terrain using lower margin is adjusted Working condition.

By using above-mentioned technical proposal, the utility model is compared compared with the prior art：Pass through the first branch pipe, the second branch pipe And the cooperation of exhaust pipe enables vacuum pump to carry out pumping work to each operating position of double screw extruder, relative to For single-point pumping, pumping effect is more preferable.

Description of the drawings

Fig. 1 is the structural schematic diagram of double screw extruder；

Fig. 2 is the structural schematic diagram of the exhaust pipe of double screw extruder；

Fig. 3 is the structural schematic diagram of the cooling tube of double screw extruder.

In figure：1, holder；11, lower margin is adjusted；2, fuselage；21, machine barrel；211, exhaust outlet；22, spout；23, it discharges Mouthful；24, twin-screw；3, exhaust pipe；31, the second branch pipe；311, the second shut-off valve；32, the first branch pipe；321, the first shut-off valve； 33, transverse tube；34, T shapes pipe；35, clip；36, cooling tube；361, water outlet；362, water inlet；363, sealing ring；4, vacuum pump； 5, connector；51, refractory seals set.

Specific implementation mode

Double screw extruder is described further referring to figs. 1 to Fig. 3.

A kind of double screw extruder, as shown in Figure 1, including holder 1, the fuselage 2 being fixedly connected on holder 1 and setting For blending the twin-screw 24 for squeezing powder in fuselage 2,1 lower end of holder is fixedly connected with multiple so that twin-screw extrusion function Enough adjusting lower margins 11 that horizontal operation state is kept on broken terrain, 2 one end of fuselage are fixedly connected with spout 22, 2 other end of fuselage is provided with discharge port 23, and the machine barrel 21 that fuselage 2 is arranged by multi-section serial forms；Wherein, 2 upper end of fuselage is arranged There are an exhaust pipe 3 being arranged along 2 length direction of fuselage and two vacuum pumps 4, more connection exhausts are provided on exhaust pipe 3 Pipe 3 is connected to the first branch pipe 32 of setting with 21 inside of machine barrel, and more connection vacuum pumps 4 and exhaust pipe 3 are additionally provided on exhaust pipe 3 The second branch pipe 31.

Wherein, the first shut-off valve for closed barrier machine barrel 21 and exhaust pipe 3 is both provided on each first branch pipe 32 321, the second shut-off valve 311 for closed barrier exhaust pipe 3 and vacuum pump 4 is both provided on each second branch pipe 31.

In conjunction with shown in Fig. 1 and Fig. 2, exhaust pipe 3 includes multistage transverse tube 33, passes through T between two transverse tubes 33 being disposed adjacent The connection setting of shape pipe 34, each road the first branch pipe 32 and the second branch pipe 31 are connected to setting by T shapes pipe 34 with each transverse tube 33； Wherein, it is fastenedly connected by clip 35 between T shapes pipe 34 and other pipelines.

In conjunction with shown in Fig. 2 and Fig. 3, cooling tube 36, the setting of 36 lower end of the cooling tube are arranged on 32 outer wall of the first branch pipe Water inlet 362,36 upper end of the cooling tube are provided with water outlet 361, wherein outside 36 upper and lower ends of cooling tube and the first branch pipe 32 The sealing ring 363 for preventing cooling water from revealing is both provided between wall.

Wherein, water inlet 362 is connected to setting with extraneous water pump, and water outlet 361 is connected to setting with external water pipe.

In conjunction with shown in Fig. 1 and Fig. 3, each 21 upper surface of road machine barrel is both provided with one of exhaust outlet 211, and 21 upper surface of machine barrel is logical It crosses bolt to be fixedly connected there are one connector 5, the through-hole of 211 bank of exhaust outlet connection setting, the first branch pipe is provided on connector 5 32 lower ends are plugged in through-hole, wherein are provided between the first branch pipe 32 and connector 5 for preventing admixture of gas from connection The refractory seals set 51 that gap leaks out between part 5 and the first branch pipe 32.

Operation principle：When double screw extruder produces, as needed, it can select to be single by the second shut-off valve 311 Vacuum pump 4 is evacuated or two vacuum pumps 4 are evacuated, while the pumping of double screw extruder can be selected by the first shut-off valve 321 Position so that the scope of application is wider.

When certain segment pipe damages, the first shut-off valve 321 for connecting the segment pipe can be closed, then by connecing The segment pipe both ends clip 35 is touched to its fixed effect, you can the segment pipe is removed, and is directly replaced, structure letter It is single, it is easy to operate.

The above is only the preferred embodiment of the utility model, and the scope of protection of the utility model is not limited merely to Above-described embodiment, technical solution belonging to the idea of the present invention belong to the scope of protection of the utility model.It should refer to Go out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and Retouching, these improvements and modifications also should be regarded as the scope of protection of the utility model.

Claims

1. a kind of double screw extruder, it is characterised in that：Including holder（1）, be fixedly connected on holder（1）On fuselage（2）With And it is arranged in fuselage（2）Interior twin-screw（24）, the fuselage（2）One end is fixedly connected with spout（22）, the fuselage（2） The other end is provided with discharge port（23）, the fuselage（2）Including multiple machine barrels being arranged in series（21）, in each road machine barrel（21）On It is both provided with one of exhaust outlet（211）, the fuselage（2）Upper end is provided with an exhaust pipe（3）, exhaust pipe（3）On be provided with More each road exhaust outlets of connection（211）With exhaust pipe（3）The first branch pipe（32）, in exhaust pipe（3）On add two vacuum Pump（4）, exhaust pipe（3）On be provided with two and vacuum pump（4）It is connected to the second branch pipe of setting（31）.

2. a kind of double screw extruder according to claim 1, it is characterised in that：Each first branch pipe（32）On be all provided with It is equipped with the first shut-off valve（321）.

3. a kind of double screw extruder according to claim 1, it is characterised in that：Each second branch pipe（31）On be all provided with It is equipped with the second shut-off valve（311）.

4. a kind of double screw extruder according to claim 1, it is characterised in that：The exhaust pipe（3）Including multistage cross Pipe（33）, two transverse tubes being disposed adjacent（33）Between pass through T shape pipes（34）Connection setting, the first branch pipe of each road（32）And the Two branch pipes（31）Pass through T shape pipes（34）With each road transverse tube（33）Connection setting.

5. a kind of double screw extruder according to claim 4, it is characterised in that：The T shapes pipe（34）With other pipelines Between pass through clip（35）It is fastenedly connected.

6. a kind of double screw extruder according to claim 1, it is characterised in that：First branch pipe（32）It is covered on outer wall Equipped with cooling tube（36）, the cooling tube（36）Water inlet is arranged in lower end（362）, the cooling tube（36）Upper end is provided with water outlet Mouthful（361）.

7. a kind of double screw extruder according to claim 6, it is characterised in that：The cooling tube（36）Upper and lower ends with It is both provided with sealing ring between one pipe outer wall（363）.

8. a kind of double screw extruder according to claim 1, it is characterised in that：The machine barrel（21）On be provided with connection Part（5）, the connector（5）On be provided with for the first branch pipe（32）It is plugged in exhaust outlet（211）Interior through-hole, described first Pipe（32）With connector（5）Between be provided with refractory seals set（51）.

9. a kind of double screw extruder according to claim 1, it is characterised in that：The holder（1）Lower end is provided with more A adjusting lower margin（11）.