CN210501350U

CN210501350U - Double-screw extruder temperature control mechanism for preparing modified polypropylene material of electric vehicle

Info

Publication number: CN210501350U
Application number: CN201920703939.2U
Authority: CN
Inventors: 陈严
Original assignee: Zhejiang Huijing New Material Co Ltd
Current assignee: Zhejiang Huijing New Material Co Ltd
Priority date: 2019-05-16
Filing date: 2019-05-16
Publication date: 2020-05-12
Anticipated expiration: 2029-05-16

Abstract

The utility model provides a preparation electric motor car modified polypropylene material's double helix extruder temperature control mechanism belongs to double helix extruder technical field. It includes that organism and detachable locate the sheath of organism tip, is equipped with in the organism and extrudes the chamber, extrudes the intracavity and is equipped with two intermeshing's screw rod, the outside of extruding the chamber and the inside of two screw rods be equipped with an outer temperature control subassembly and interior temperature control subassembly respectively, outer temperature control subassembly around locating outside extruding the chamber, interior temperature control subassembly is located the inside of outer temperature control subassembly, interior temperature control subassembly still including locating the rotating member that links to each other with the screw rod tip in the sheath, rotating member end connection has the accuse temperature part. The utility model discloses well external temperature control subassembly and interior temperature control subassembly can carry out temperature control to the product meltwater of extruding the intracavity simultaneously from outside and inside, prevent that the meltwater temperature from reducing and influencing product quality, improve the product quality.

Description

Double-screw extruder temperature control mechanism for preparing modified polypropylene material of electric vehicle

Technical Field

The utility model belongs to the technical field of the mould is cut to mould interior fever, a preparation electric motor car modified polypropylene material's double helix extruder temperature control mechanism is related to.

Background

When the modified polypropylene material for the electric vehicle is prepared, a plurality of raw materials need to be melted and extruded in a double-screw extruder, and the temperature of the melted raw materials needs to be kept at 180-240 ℃ when the melted raw materials are extruded, but the temperature of the double-screw extruder in the traditional technology is not well controlled, so that the prepared product is low in quality and cannot meet the production requirement due to the fact that the temperature of the raw materials is too low.

For example, the Chinese patent discloses a double-screw extruder with the following application numbers: (CN104309095A), including barrel and two screw units, two screw units all are located the barrel, meshing section is formed in the meshing of one section screw unit in two screw units, and the end of meshing section is the discharge gate, still include independent section and filling section, divide into two independent through-going runners in the barrel, independent section, filling section and meshing section set gradually along screw unit delivery side, two screw units of independent section and filling section are non-meshing state, and two screw units of independent section and filling section all are located the runner respectively, the complete section is equipped with the heater on the barrel, be equipped with the filler on the filling section. The independent section and the filling section of the invention are equivalent to two independent single screws, the material in a melting state in the screw groove of the screw has better sealing effect, the loss of gas and supercritical fluid added in the screw groove is avoided, the meshing section has better dispersion and mixing effect on the material, and the invention is suitable for foaming processing of polymer melt. This scheme has sealed effectual and the high advantage of dispersed mixture degree, but also has the not good shortcoming of temperature control when extruding.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem, provide a double helix extruder control temperature mechanism of preparation electric motor car modified polypropylene material.

In order to achieve the above purpose, the utility model adopts the following technical proposal:

the utility model provides a preparation modified polypropylene material's of electric motor car double helix extruder temperature control mechanism, includes that organism and detachable locate the sheath of organism tip, is equipped with in the organism and extrudes the chamber, extrudes the intracavity and is equipped with two intermeshing's screw rod, the outside of extruding the chamber and the inside of two screw rods be equipped with an outer temperature control subassembly and interior temperature control subassembly respectively, outer temperature control subassembly outside locating and extruding the chamber, interior temperature control subassembly is located the inside of outer temperature control subassembly, interior temperature control subassembly still including locating the rotating member that links to each other with the screw rod tip in the sheath, rotating member end connection has the temperature control part.

In the temperature control mechanism for the double-screw extruder for preparing the modified polypropylene material of the electric vehicle, the internal temperature control assembly comprises a plurality of internal heating runners arranged in the screw rod, the plurality of internal heating runners are distributed in an annular array along the axial lead of the screw rod, a backflow runner is further arranged at the axis of the screw rod, and a connecting runner is arranged between the backflow runner and each internal heating runner.

In foretell preparation electric motor car modified polypropylene material's double helix extruder temperature control mechanism, outer temperature control subassembly is including around locating the plus heat runner that extrudes the chamber outside, and the plus heat runner is the spiral and encircles in extruding the chamber outside, and the plus heat runner is kept away from sheath one end and is equipped with the inlet, and the plus heat runner is close to sheath one end and is equipped with the liquid outlet.

In the double-screw extruder temperature control mechanism for preparing the modified polypropylene material of the electric vehicle, the temperature control part comprises the shunting block which is arranged in the sheath and corresponds to the rotating part, and the shunting block is movably connected with the rotating part.

In the temperature control mechanism for the double-screw extruder for preparing the modified polypropylene material of the electric vehicle, the end part of the rotating part is provided with the liquid inlet clamping block corresponding to the internal heating flow channel, the axis of the rotating part is provided with the liquid outlet clamping block corresponding to the backflow flow channel, and the liquid inlet clamping block and the liquid outlet clamping block are respectively inserted into the internal heating flow channel and the backflow flow channel.

In the temperature control mechanism for the double-screw extruder for preparing the modified polypropylene material of the electric vehicle, a first T-shaped groove is arranged in the rotating piece, the first T-shaped groove is annular, a second T-shaped groove corresponding to the liquid outlet fixture block is arranged at the axis of the rotating piece, a plurality of first liquid inlet pipes penetrating through the liquid inlet fixture block and communicated with the internal heating flow channel are arranged on the side wall of the first T-shaped groove, and a first liquid outlet pipe penetrating through the liquid outlet fixture block and communicated with the reflux flow channel is arranged on the side wall of the second T-shaped groove.

In the double-screw extruder temperature control mechanism for preparing the modified polypropylene material of the electric vehicle, the end parts of the shunting blocks are respectively provided with a first T-shaped block and a second T-shaped block corresponding to a first T-shaped groove and a second T-shaped groove, the first T-shaped groove is movably connected with the first T-shaped block, the second T-shaped groove is movably connected with the second T-shaped block, the first T-shaped block is internally provided with a second liquid inlet pipe corresponding to the first liquid inlet pipe, the second T-shaped block is internally provided with a second liquid outlet pipe corresponding to the first liquid outlet pipe, and the second liquid outlet pipe penetrates through the shunting blocks.

In foretell preparation electric motor car modified polypropylene material's double helix extruder temperature control mechanism, still be equipped with the annular flow channel that is linked together with No. two feed liquor pipes in the reposition of redundant personnel piece, be equipped with No. three feed liquor pipes on the annular flow channel lateral wall, No. three feed liquor pipe tip even has the hose No. one, No. one hose tip passes the sheath lateral wall and extends to outside the sheath, No. two liquid pipe tip even has the hose No. two, No. two hose tips pass the sheath lateral wall and extend to outside the sheath.

In the double-screw extruder temperature control mechanism for preparing the modified polypropylene material of the electric vehicle, the inner side and the outer side of the joint of the rotating member and the first T-shaped block are respectively provided with the inner sealing ring and the outer sealing ring, and the joint of the rotating member and the second T-shaped block is provided with the second sealing ring.

In the double-screw extruder temperature control mechanism for preparing the modified polypropylene material of the electric vehicle, an extrusion groove is arranged in the sheath, a plurality of extrusion holes communicated with the extrusion cavity are formed in the bottom of the extrusion groove, and the sheath is connected with the machine body through bolts.

Compared with the prior art, the utility model has the advantages of:

1. the outer temperature control assembly and the inner temperature control assembly can control the temperature of the product molten liquid in the extrusion cavity from the outside and the inside at the same time, so that the product quality is prevented from being influenced by the temperature reduction of the molten liquid, and the product quality is improved.

2. The temperature control component can ensure that the internal temperature control assembly can also control the temperature when the screw rod rotates.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic diagram of the internal structure provided by the present invention;

FIG. 2 is a schematic cross-sectional view A-A of FIG. 1;

FIG. 3 is an enlarged schematic view of B of FIG. 1;

FIG. 4 is a schematic cross-sectional view of C-C of FIG. 1;

fig. 5 is a schematic cross-sectional view of D-D in fig. 3.

In the figure, a machine body 1, a sheath 2, a screw 3, an inner temperature control assembly 4, an outer temperature control assembly 5, a rotating part 6, a temperature control component 7, an inner heating flow channel 8, a backflow flow channel 9, a connecting flow channel 10, an external hot runner 11, a liquid inlet 12, a liquid outlet 13, a liquid inlet clamping block 14, a liquid outlet clamping block 15, a first T-shaped groove 16, a second T-shaped groove 17, a first liquid inlet pipe 18, a first liquid outlet pipe 19, a first T-shaped block 20, a second T-shaped block 21, a second liquid inlet pipe 22, a second liquid outlet pipe 23, a third liquid inlet pipe 24, a first hose 25, a second hose 26, an inner sealing ring 27, an outer sealing ring 28, a second sealing ring 29, an extrusion groove 30, an extrusion hole 31, a bolt 32, an extrusion cavity 40, a flow distribution block 50 and an annular flow channel 60.

Detailed Description

As shown in fig. 1 and 3, a double-screw extruder temperature control mechanism for preparing a modified polypropylene material for an electric vehicle comprises a machine body 1 and a detachable sheath 2 arranged at the end of the machine body 1, wherein an extrusion cavity 40 is arranged in the machine body 1, two mutually meshed screw rods 3 are arranged in the extrusion cavity 40, an outer temperature control component 5 and an inner temperature control component 4 are respectively arranged on the outer side of the extrusion cavity 40 and the inner parts of the two screw rods 3, the outer temperature control component 5 is wound outside the extrusion cavity 40, the inner temperature control component 4 is positioned inside the outer temperature control component 5, the inner temperature control component 4 further comprises a rotating part 6 arranged in the sheath 2 and connected with the end of the screw rod 3, and the end of the rotating part 6 is connected with a temperature control part 7.

In this embodiment, outer accuse temperature subassembly 5 is around locating the outside of extruding chamber 40, outer accuse temperature subassembly 5 can be followed the chamber 40 outside of extruding and is controlled the temperature to the product of extruding in the chamber 40, interior accuse temperature subassembly 4 is located the inside of screw rod 3, interior accuse temperature subassembly 4 can be followed screw rod 3 inside and is controlled the temperature to the product of extruding in the chamber 40, accuse temperature part 7 can guarantee that interior accuse temperature subassembly 4 can normally work when screw rod 3 rotates, outer accuse temperature subassembly 5 and interior accuse temperature subassembly 4 can carry out temperature control to the product meltwater of extruding the intracavity simultaneously from outside and inside, prevent that the meltwater temperature from reducing and influencing product quality, improve product quality.

The internal temperature control assembly 4 comprises a plurality of internal heating runners 8 arranged in the screw rod 3, the plurality of internal heating runners 8 are distributed along the axial lead of the screw rod 3 in an annular array manner, a backflow runner 9 is further arranged at the axis of the screw rod 3, and a connecting runner 10 is arranged between the backflow runner 9 and each internal heating runner 8.

In this embodiment, as shown in fig. 1 and fig. 2, the temperature of the product in the extrusion cavity 40 can be controlled from the inside of the screw 3 by introducing heated hot oil into the internal heating flow passage 8, so as to prevent the temperature of the product from being reduced, and the hot oil passes through the internal heating flow passage 8 and the connecting flow passage 10 in sequence after being introduced from the internal heating flow passage 8, and finally flows out through the backflow flow passage 9.

Outer temperature control subassembly 5 is including winding the outer heating runner 11 of locating the chamber 40 outside of extruding, and outer heating runner 11 is the spiral and encircles in extruding the chamber 40 outside, and outer heating runner 11 is kept away from 2 one ends of sheath and is equipped with inlet 12, and outer heating runner 11 is close to 2 one ends of sheath and is equipped with liquid outlet 13.

In this embodiment, as shown in fig. 1, the liquid inlet 12 is externally connected to a pressurizing machine, the pressurizing machine can press heated oil into the external hot runner 11, the temperature of the product in the extrusion cavity 40 is controlled from the outside of the extrusion cavity 40, the temperature of the product is prevented from being reduced, the quality of the product is prevented from being affected, the liquid outlet 13 is externally connected to an oil storage tank, and hot oil flowing from the liquid inlet 12 finally enters the liquid storage tank from the liquid outlet 13 to be stored, so as to be reused.

The temperature control component 7 comprises a shunting block 50 which is arranged in the jacket 2 and corresponds to the rotating piece 6, and the shunting block 50 is movably connected with the rotating piece 6.

In this embodiment, as shown in fig. 1, 3 and 5, the shunting block 50 can shunt the hot oil introduced into the screw 3 and the hot oil flowing out of the screw 3, and the shunting block 50 is externally connected with the press and the reservoir, so that when the rotating member 6 rotates with the screw 3, the shunting block 50 remains stationary and can still introduce the hot oil into the screw 3.

The end part of the rotating piece 6 is provided with a liquid inlet clamping block 14 corresponding to the internal heating flow channel 8, the axis of the rotating piece 6 is provided with a liquid outlet clamping block 15 corresponding to the backflow flow channel 9, and the liquid inlet clamping block 14 and the liquid outlet clamping block 15 are respectively inserted into the internal heating flow channel 8 and the backflow flow channel 9.

In this embodiment, as shown in fig. 3, the liquid inlet clamping block 14 and the liquid outlet clamping block 15 are inserted into the internal heating flow channel 8 and the backflow flow channel 9, so that the rotating member 6 and the screw rod 3 can be connected more tightly, and the hot oil leakage caused by the falling of the rotating member 6 when the screw rod 3 rotates is prevented.

A first T-shaped groove 16 is formed in the rotating part 6, the first T-shaped groove 16 is circular, a second T-shaped groove 17 corresponding to the liquid outlet clamping block 15 is formed in the axis of the rotating part 6, a plurality of first liquid inlet pipes 18 penetrating through the liquid inlet clamping block 14 and communicated with the internal heating flow channel 8 are arranged on the side wall of the first T-shaped groove 16, and a first liquid outlet pipe 19 penetrating through the liquid outlet clamping block 15 and communicated with the backflow flow channel 9 is arranged on the side wall of the second T-shaped groove 17.

In this embodiment, as shown in fig. 3, hot oil can enter the internal heating channel 8 through the first T-shaped groove 16 and the first liquid inlet pipe 18, and hot oil in the backflow channel 9 can enter the second T-shaped groove 17 through the first liquid outlet pipe 19.

The end parts of the shunting blocks 50 are respectively provided with a first T-shaped block 20 and a second T-shaped block 21 corresponding to the first T-shaped groove 16 and the second T-shaped groove 17, the first T-shaped groove 16 is movably connected with the first T-shaped block 20, the second T-shaped groove 17 is movably connected with the second T-shaped block 21, a second liquid inlet pipe 22 corresponding to the first liquid inlet pipe 18 is arranged in the first T-shaped block 20, a second liquid outlet pipe 23 corresponding to the first liquid outlet pipe 19 is arranged in the second T-shaped block 21, and the second liquid outlet pipe 23 penetrates through the shunting blocks 50.

In this embodiment, as shown in fig. 3, the first T-shaped groove 16 is movably connected to the first T-shaped block 20, the second T-shaped groove 17 is movably connected to the second T-shaped block 21, the rotating block 6 can rotate around the first T-shaped block 20 and the second T-shaped block 21, hot oil can flow into the first liquid inlet pipe 18 through the second liquid inlet pipe 22, and hot oil in the first liquid outlet pipe 19 can flow out through the second liquid outlet pipe 23.

An annular flow channel 60 communicated with the second liquid inlet pipe 22 is further arranged in the flow dividing block 50, a third liquid inlet pipe 24 is arranged on the side wall of the annular flow channel 60, a first hose 25 is connected to the end portion of the third liquid inlet pipe 24, the end portion of the first hose 25 penetrates through the side wall of the sheath 2 and extends out of the sheath 2, a second hose 26 is connected to the end portion of the second liquid outlet pipe 23, and the end portion of the second hose 26 penetrates through the side wall of the sheath 2 and extends out of the sheath 2.

In this embodiment, as shown in fig. 3, the first hose 25 is externally connected to a pressurizing machine, the pressurizing machine can introduce hot oil into the third liquid inlet pipe 24 through the first hose 25, and then introduce the hot oil into the second liquid inlet pipe 22 through the third liquid inlet pipe 24, the second hose 26 is externally connected to an oil storage tank 26, and the hot oil in the second liquid outlet pipe 23 can flow into the oil storage tank through the second hose 26 for storage, so as to be recycled.

The inner side and the outer side of the joint of the rotating member 6 and the first T-shaped block 20 are respectively provided with an inner sealing ring 27 and an outer sealing ring 28, and the joint of the rotating member 6 and the second T-shaped block 21 is provided with a second sealing ring 29.

In this embodiment, as shown in fig. 3, the inner seal ring 27 and the outer seal ring 28 can prevent hot oil from leaking out from the connection between the hot oil rotary member 6 and the first T-shaped block 20 and polluting products, and the second seal ring 29 can prevent hot oil from leaking out from the connection between the rotary member 6 and the second T-shaped block 21 and polluting products.

An extrusion groove 30 is arranged in the sheath 2, a plurality of extrusion holes 31 communicated with the extrusion cavity 40 are arranged at the bottom of the extrusion groove 30, and the sheath 2 is connected with the machine body 1 through bolts 32.

In this embodiment, as shown in fig. 1 and 4, the sheath 2 is connected to the machine body 1 through a bolt 32, so as to facilitate the detachment and cleaning of the sheath 2.

The utility model discloses an application method, when using double helix extruder to extrude the product, double helix extruder's driving motor drive screw 3 rotates and extrudes the product, when extruding the product, connect inlet 12 and a hose 25 respectively with the presser, connect liquid outlet 13 and No. two hoses 26 respectively with the liquid storage pot, hot oil after the presser will heat flows in plus hot runner 11 through inlet 12, control the temperature to the product in extrusion chamber 40 from the extrusion chamber 40 outside, and simultaneously, hot oil after the presser will heat loops through No. three feed liquor pipes 24, No. two feed liquor pipes 22 and No. one feed liquor pipe 18 let in the hot runner 8, control the temperature to the product in extrusion chamber 40 from the screw rod 3 inboard, hot oil in the external heating runner 11 is accomplished to heat after flows in the liquid storage pot from liquid outlet 13 and is stored, hot oil in the internal heating runner 8 loops through connecting runner 10, The backflow channel 9, the first liquid outlet pipe 19, the second liquid outlet pipe 23 and the second hose 26 flow into the liquid storage tank.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the machine body 1, the sheath 2, the screw 3, the internal temperature control assembly 4, the external temperature control assembly 5, the rotating member 6, the temperature control member 7, the internal heating flow channel 8, the backflow flow channel 9, the connecting flow channel 10, the external hot runner 11, the liquid inlet 12, the liquid outlet 13, the liquid inlet fixture block 14, the liquid outlet fixture block 15, the first T-shaped groove 16, the second T-shaped groove 17, the first liquid inlet pipe 18, the first liquid outlet pipe 19, the first T-shaped block 20, the second T-shaped block 21, the second liquid inlet pipe 22, the second liquid outlet pipe 23, the third liquid inlet pipe 24, the first hose 25, the second hose 26, the internal sealing ring 27, the external sealing ring 28, the second sealing ring 29, the extrusion groove 30, the extrusion hole 31, the bolt 32, the extrusion cavity 40, the flow dividing block 50, the annular flow channel 60 and the like are used more frequently, the possibility of using other terms is. These terms are used merely to more conveniently describe and explain the nature of the present invention and should not be interpreted as imposing any additional limitations that are contrary to the spirit of the present invention.

Claims

1. The utility model provides a preparation modified polypropylene material's of electric motor car double helix extruder temperature control mechanism, includes that organism (1) and detachable locate sheath (2) of organism (1) tip, its characterized in that is equipped with in organism (1) and extrudes chamber (40), is equipped with two intermeshing's screw rod (3) in extruding chamber (40), the outside of extruding chamber (40) and the inside of two screw rod (3) be equipped with one respectively and control temperature subassembly (5) and interior temperature control subassembly (4), outer temperature control subassembly (5) around locating outside extruding chamber (40), interior temperature control subassembly (4) are located the inside of outer temperature control subassembly (5), interior temperature control subassembly (4) still including locating swivel part (6) that link to each other with screw rod (3) tip in sheath (2), swivel part (6) end connection has temperature control part (7).

2. The temperature control mechanism of the double-screw extruder for preparing the modified polypropylene material of the electric vehicle as claimed in claim 1, wherein the internal temperature control assembly (4) comprises a plurality of internal heating runners (8) arranged in the screw (3), the plurality of internal heating runners (8) are distributed along the axial lead of the screw (3) in an annular array, a backflow runner (9) is further arranged at the axial lead of the screw (3), and a connecting runner (10) is arranged between the backflow runner (9) and each internal heating runner (8).

3. The temperature control mechanism of the double-screw extruder for preparing the modified polypropylene material of the electric vehicle as claimed in claim 2, wherein the external temperature control assembly (5) comprises an external heating channel (11) wound around the outside of the extrusion cavity (40), the external heating channel (11) is spirally wound around the outside of the extrusion cavity (40), a liquid inlet (12) is arranged at one end of the external heating channel (11) far away from the sheath (2), and a liquid outlet (13) is arranged at one end of the external heating channel (11) close to the sheath (2).

4. The temperature control mechanism of the double-screw extruder for preparing the modified polypropylene material of the electric vehicle as claimed in claim 3, wherein the temperature control component (7) comprises a shunting block (50) which is arranged in the sheath (2) and corresponds to the rotating member (6), and the shunting block (50) is movably connected with the rotating member (6).

5. The temperature control mechanism of the double-screw extruder for preparing the modified polypropylene material of the electric vehicle as claimed in claim 4, wherein a liquid inlet clamping block (14) corresponding to the internal heating flow channel (8) is arranged at the end of the rotating member (6), a liquid outlet clamping block (15) corresponding to the backflow flow channel (9) is arranged at the axis of the rotating member (6), and the liquid inlet clamping block (14) and the liquid outlet clamping block (15) are respectively inserted into the internal heating flow channel (8) and the backflow flow channel (9).

6. The temperature control mechanism of the double-screw extruder for preparing modified polypropylene material of the electric vehicle as claimed in claim 5, wherein a first T-shaped groove (16) is formed in the rotating member (6), the first T-shaped groove (16) is circular, a second T-shaped groove (17) corresponding to the liquid outlet clamping block (15) is formed at the axis of the rotating member (6), a plurality of first liquid inlet pipes (18) penetrating through the liquid inlet clamping block (14) and communicated with the internal heating flow channel (8) are formed on the side wall of the first T-shaped groove (16), and a first liquid outlet pipe (19) penetrating through the liquid outlet clamping block (15) and communicated with the backflow flow channel (9) is formed on the side wall of the second T-shaped groove (17).

7. The temperature control mechanism of the double-screw extruder for preparing the modified polypropylene material of the electric vehicle as claimed in claim 6, wherein the shunting block (50) is provided at the end thereof with a first T-shaped block (20) and a second T-shaped block (21) corresponding to the first T-shaped groove (16) and the second T-shaped groove (17), the first T-shaped groove (16) is movably connected with the first T-shaped block (20), the second T-shaped groove (17) is movably connected with the second T-shaped block (21), the first T-shaped block (20) is provided with a second liquid inlet pipe (22) corresponding to the first liquid inlet pipe (18), the second T-shaped block (21) is provided with a second liquid outlet pipe (23) corresponding to the first liquid outlet pipe (19), and the second liquid outlet pipe (23) penetrates through the shunting block (50).

8. The temperature control mechanism of the double-screw extruder for preparing the modified polypropylene material of the electric vehicle as claimed in claim 7, wherein the flow dividing block (50) is further provided with an annular flow channel (60) communicated with the second liquid inlet pipe (22), the side wall of the annular flow channel (60) is provided with the third liquid inlet pipe (24), the end of the third liquid inlet pipe (24) is connected with the first hose (25), the end of the first hose (25) penetrates through the side wall of the sheath (2) and extends out of the sheath (2), the end of the second liquid outlet pipe (23) is connected with the second hose (26), and the end of the second hose (26) penetrates through the side wall of the sheath (2) and extends out of the sheath (2).

9. The temperature control mechanism of the double-screw extruder for preparing the modified polypropylene material of the electric vehicle as claimed in claim 8, wherein an inner sealing ring (27) and an outer sealing ring (28) are respectively arranged on the inner side and the outer side of the joint of the rotating member (6) and the first T-shaped block (20), and a second sealing ring (29) is arranged on the joint of the rotating member (6) and the second T-shaped block (21).

10. The temperature control mechanism of the double-screw extruder for preparing the modified polypropylene material of the electric vehicle as claimed in claim 9, wherein an extrusion groove (30) is provided in the sheath (2), a plurality of extrusion holes (31) communicated with the extrusion cavity (40) are provided at the bottom of the extrusion groove (30), and the sheath (2) is connected with the machine body (1) through bolts (32).