CN211031152U

CN211031152U - Screw extrusion device with air cooling function

Info

Publication number: CN211031152U
Application number: CN201922055481.7U
Authority: CN
Inventors: 徐文良; 何建领; 李明; 刘俊; 庞阳; 肖宇韬; 肖志林
Original assignee: Suzhou Tongda Machinery Co Ltd
Current assignee: Suzhou Tongda Machinery Co Ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-07-17
Anticipated expiration: 2029-11-25

Abstract

A screw extrusion device with air cooling function belongs to the technical field of plastic extrusion devices. The device comprises a machine barrel and a feeding barrel, wherein the left end of the feeding barrel is matched and connected with the right end of the machine barrel, and the left end of the machine barrel is matched and connected with a machine barrel melt extrusion head; the screw is arranged in the cylinder cavity, and the screw driving mechanism is arranged on the rack; the heating rings are arranged outside the machine barrel, an annular cavity is arranged on the inner wall of each heating ring, ventilation grooves are respectively arranged on two sides of the cavity wall surrounding the annular cavity, heat insulation rings are respectively arranged outside each heating ring, and a space between every two adjacent heating rings forms an air outlet cavity; the screw temperature zone temperature adjusting and controlling mechanism is fixed with the heat insulation ring and communicated with the annular cavity; the hopper is arranged corresponding to the position of the feeding cylinder; the method is characterized in that: the hopper is fixed with the air cooling mechanism at the position corresponding to the feeding cylinder and is communicated with the cavity of the feeding cylinder. The smooth and easy effect of feeding to the barrel by the feeding section of thick bamboo is ensured.

Description

Screw extrusion device with air cooling function

Technical Field

The utility model belongs to the technical field of the plastics extrusion device, concretely relates to screw rod extrusion device with air cooling function.

Background

As known in the art, screw extrusion devices are generally divided into different temperature zones, and the temperature of each temperature zone is different according to the process requirements, and a screw temperature zone temperature adjusting and controlling mechanism which is arranged outside a machine barrel and controlled by P L C (programmable controller) is generally adopted for controlling the temperature of each temperature zone, furthermore, as known in the art, the melting temperature of some materials such as engineering plastics (ABS) is higher than 200 ℃, when the engineering plastics are introduced into a material introducing section by a hopper which is arranged corresponding to the material introducing section of a screw, the material which tends to be molten and the just-introduced plastic particles are mutually bonded or mutually wrapped in the material introducing section area, so that the material is seriously silted up due to the difference of the temperature between the material introducing section of the screw and a conveying heating section of the screw, and the material is required to be stopped, a water cooling device is arranged at a discharge port corresponding to the hopper to a certain degree to avoid the influence of the suddenly-increased temperature of the conveying heating section on the material introducing section, so that the mutual bonding of the materials can be relieved, and the problem that the material can not be effectively reduced by the water cooling jacket of the water cooling device which is recommended by the hopper of CN206475407U, and the boiling jacket of the hopper which is obtained by the first patent, and the second patent is described below.

Disclosure of Invention

The utility model aims at providing a temperature that helps eliminating the barrel suddenly risees influences the feed cylinder region and causes the material to bond each other and can ensure the smooth and easy screw rod extrusion device with wind cooling function of effect of feeding.

The utility model discloses a screw extrusion device with air cooling function, which comprises a machine barrel and a feeding barrel, wherein the left end of the feeding barrel is matched and connected with the right end of the machine barrel, the feeding barrel cavity of the feeding barrel is communicated with the machine barrel cavity of the machine barrel, and the left end of the machine barrel is matched and connected with a machine barrel melt extrusion head; the screw is arranged in the cylinder cavity, the left end of the screw extends out of the cylinder cavity and extends to the cylinder melt extrusion head, the right end of the screw extends out of the feeding cylinder cavity and forms a screw shaft head, the screw shaft head is in transmission connection with the screw driving mechanism, and the screw driving mechanism is arranged on the rack in a use state; the heating rings are distributed at intervals in a state of corresponding to each temperature zone of the screw and are arranged outside the machine barrel, an annular cavity is respectively arranged on the inner wall of each heating ring and in the middle of the heating rings in the length direction around the heating rings, ventilation grooves are respectively arranged at intervals on two sides of the cavity wall around the annular cavity, a heat insulation ring is respectively arranged outside each heating ring, and a space between every two adjacent heating rings is formed into an air outlet cavity which is communicated with the ventilation grooves; the number of the screw temperature zone temperature adjusting and controlling mechanisms is equal to that of the heating rings, and the screw temperature zone temperature adjusting and controlling mechanisms are fixed with the heat insulation rings and communicated with the annular cavity; the hopper is arranged corresponding to the position of the feeding cylinder; is characterized by also comprising an air cooling mechanism which is arranged outside the feeding barrel, and the hopper is fixed with the air cooling mechanism at the position corresponding to the feeding barrel and is communicated with the cavity of the feeding barrel.

In a specific embodiment of the present invention, the set of heating rings and the position corresponding to the set of screw warm-up temperature adjustment control mechanism are respectively formed with a fan connecting seat, the fan connecting seat is formed with a connecting seat air inlet chamber, the connecting seat air inlet chamber is communicated with the annular chamber, and the position corresponding to the fan connecting seat and the heat insulation ring are fixed by the set of screw warm-up temperature adjustment control mechanism.

In another specific embodiment of the present invention, the set of screw temperature adjusting and controlling mechanisms respectively comprises a motor and a fan, the motor is in transmission fit with the fan and is fixed by the fan and the motor at a position corresponding to the fan connection seat and the heat insulation ring, and the fan outlet of the fan is communicated with the air inlet cavity of the connection seat.

In another specific embodiment of the present invention, the left end of the feeding cylinder is fixed to the right end face of the cylinder by a feeding cylinder fixing screw.

In a further embodiment of the present invention, the air cooling mechanism includes a sleeve, a fan housing air supply motor and a fan housing air supply fan, the sleeve is disposed outside the feeding cylinder, and the left end of the sleeve is fixed to the right end of the barrel, and the right end of the sleeve is fixed to the right end of the feeding cylinder, a set of heat dissipation fins is formed on the outer wall of the left end of the sleeve and around the periphery of the outer wall at intervals, the fan housing is fixed to the sleeve in a region corresponding to the set of heat dissipation fins, the set of heat dissipation fins are covered by the fan housing in a fan housing cavity of the fan housing, and a fan housing air outlet communicating with the outside is formed on the right side of the fan housing, the fan housing motor is in transmission fit with the fan housing air supply fan and is fixed to the fan housing by the fan housing air supply fan together with the air supply fan housing motor, the fan housing air supply fan, the hopper is fixed with the upper part of the right end of the sleeve.

The present invention provides a feed cylinder for a motor vehicle, comprising a cylinder, a sleeve, a cylinder flange, a sleeve left flange, a sleeve right flange.

In a more specific embodiment of the present invention, a material guiding tube fixing seat is formed at a position at the right side of the air cover and at the right end of the sleeve, a material guiding tube fixing seat cavity of the material guiding tube fixing seat is communicated with the material guiding tube cavity through a material guiding tube feeding port formed on the material guiding tube, wherein a material guiding tube is fixed on the material guiding tube fixing seat, and the lower portion of the hopper is connected with the material guiding tube in a matching manner.

In a further specific embodiment of the present invention, a fan housing air inlet chamber communicating with the fan housing chamber extends from a downward side of the fan housing and at a position corresponding to the fan housing air supply fan, and the fan housing air supply fan together with the fan housing air supply motor is fixed to the fan housing at a position corresponding to the fan housing air inlet chamber; a thermocouple is disposed on the sleeve and to the right of the set of fins.

The present invention is directed to a screw drive device for a motor vehicle, comprising a sleeve, a sleeve right-hand member, a screw shaft seat connecting flange, a screw shaft head, a screw shaft seat, a screw driving mechanism, a screw shaft seat fixing screw, a screw shaft head fixing screw, a screw driving mechanism and a screw driving mechanism.

In yet another specific embodiment of the present invention, the screw driving mechanism includes a reduction gear box driving wheel and a reduction gear box, the reduction gear box is fixed to the frame under use, the reduction gear box power output shaft of the reduction gear box is corresponding to the position of the screw shaft head extends to the screw shaft seat, the screw shaft head is connected to the reduction gear box power output shaft in a transmission manner, the reduction gear box driving wheel is fixed to the reduction gear box power input shaft of the reduction gear box, and the reduction gear box driving wheel is connected to the driving motor in a transmission manner through a driving belt under use.

The technical scheme provided by the utility model the technical effect lie in: because the position of the feeding barrel is provided with the air cooling mechanism, and the hopper is fixed with the air cooling mechanism at the position corresponding to the feeding barrel, the air cooling mechanism carries out forced air cooling on the feeding barrel region, the temperature suddenly rising at the right end of the machine barrel is prevented from influencing the material in the region of the feeding barrel, and the smooth feeding effect from the feeding barrel to the machine barrel is ensured by avoiding the mutual adhesion of the materials.

Drawings

Fig. 1 is a structural diagram of the embodiment of the present invention.

Fig. 2 is a sectional view of the cylinder and a middle portion in the length direction of the screw shown in fig. 1.

Fig. 3 is a sectional view a-a of fig. 1.

Detailed Description

In order to make the technical essence and advantages of the present invention more clear, the applicant below describes in detail the embodiments, but the description of the embodiments is not a limitation of the present invention, and any equivalent changes made according to the inventive concept, which are only formal and not essential, should be considered as the technical scope of the present invention.

In the following description, all the concepts related to the directions or orientations of up, down, left, right, front and back are taken as examples of the position state of fig. 1, and thus, the present invention should not be construed as being particularly limited to the technical solutions provided by the present invention.

Referring to fig. 1 to 3, there are shown a barrel 1 and a feed cylinder 2, the left end of the feed cylinder 2 is coupled (fixedly connected) with the right end of the barrel 1 and a feed cylinder cavity 21 of the feed cylinder 2 is communicated with a barrel cavity 11 of the barrel 1, and a barrel melt extrusion head 12 is coupled with the left end of the barrel 1, the barrel melt extrusion head 12 may also be referred to as a barrel melt extrusion port and is supported by a carriage 121; a screw 3 and a screw drive 4 are shown, the screw 3 being arranged in the machine chamber 11 and the left end of the screw 3 extending out of the machine chamber 11 to the machine melt extrusion head 12, while the right end of the screw 3 protrudes out of the right end of the feed cylinder chamber 21 and is formed with a screw head 31, the screw head 31 being in driving connection with the screw drive 4, and the screw drive 4 being arranged in use on the machine frame; a group of heating rings 5 is shown, the group of heating rings 5 are distributed at intervals in a state of corresponding to each temperature zone of the screw 3 and are arranged outside the machine barrel 1, an annular cavity 51 is respectively arranged (can be called as being formed) on the inner wall of the group of heating rings 5 and is positioned at (corresponding to) the middle part of the length direction of the heating rings 5 around the periphery of the inner wall of the heating rings 5, and ventilating grooves 511 are respectively arranged at intervals in a state of being parallel to the length direction of the heating rings 5 on two sides of the cavity wall of the annular cavity 51. If there are twelve ventilation slots 511 on one side of the wall of the annular chamber 51, there are twelve on the other side, and the ventilation slots 511 on one side correspond to the ventilation slots 511 on the other side. A heat insulation ring 52 is respectively arranged outside the group of heating rings 5, and the space between every two adjacent heating rings 5 is formed into an air outlet cavity 53, and the air outlet cavity 53 is communicated with the ventilating slot 511; a set of screw warm zone temperature regulation and control mechanisms 6 is shown, the number of the screw warm zone temperature regulation and control mechanisms 6 is equal to that of the heating rings 5, and the screw warm zone temperature regulation and control mechanisms are fixed with the heat insulation rings 52 and communicated with the annular cavity 51; a hopper 7 is shown, which hopper 7 is arranged in correspondence with the position of the aforementioned feeder 2.

Please continue to see fig. 1 to fig. 3, which are the technical points of the technical solution provided by the present invention: in the structural system of the screw extrusion device with the air cooling function, an air cooling mechanism 8 is further included, the air cooling mechanism 8 is arranged outside the feeding cylinder 2, and the hopper 7 is fixed with the water cooling mechanism 8 at a position corresponding to the feeding cylinder 2 and is communicated with the feeding cylinder cavity 21.

A fan matching seat 54 is respectively formed on the group of heating rings 5 and at the position corresponding to the group of screw temperature zone temperature adjusting and controlling mechanisms 6, the fan matching seat 54 is formed with a matching seat air inlet cavity 541, the matching seat air inlet cavity 541 is communicated with the annular cavity 51, and the group of screw temperature zone temperature adjusting and controlling mechanisms 6 are fixed with the heat insulation ring 52 at the position corresponding to the fan matching seat 54.

As a screw extruder, the region from the feed to the melt discharge, i.e., from the right end to the left end of the barrel 1, is usually set to different temperature zones according to the process requirements, and the temperatures of the temperature zones are different, and are thus adjusted and controlled by the aforementioned set of screw temperature zone temperature adjusting and controlling means 6. Although only one set of screw temperature zone temperature adjustment control mechanisms 6 is shown as four in the present embodiment, it is apparent that the number should not be limited thereto because the more temperature zones of the screw extrusion apparatus, the correspondingly increased number of screw temperature zone temperature adjustment control mechanisms 6 and vice versa.

The screw temperature zone temperature adjusting and controlling mechanisms 6 respectively comprise a motor 61 and a fan 62, the motor 61 is in transmission fit with the fan 62, the fan 62 and the motor 61 are fixed with the heat insulation ring 52 at a position corresponding to the fan adapting seat 54, and a fan outlet of the fan 62 is communicated with the adapting seat air inlet cavity 541. When the motor 61 works, the fan 62 is driven by the motor, air with the external environment temperature is introduced into the matching seat air inlet cavity 541 of the fan matching seat 54 through the fan air outlet of the fan 62, the air is introduced into the annular cavity 51 through the matching seat air inlet cavity 541 and is led out from the air outlet cavity 53 through the air duct 511, and the temperature of the temperature zone corresponding to the part of the machine barrel 1 is controlled by the air volume of the fan 62.

The left end of the feed cylinder 2 is fixed to the right end surface of the cylinder 1 by a feed cylinder fixing screw 22.

Continuing with fig. 1 and fig. 2, the aforementioned air cooling mechanism 8 includes a sleeve 81, a wind shield 82, a wind shield air-supplying motor 83 and a wind shield air-supplying fan 84, the sleeve 81 is sleeved outside the aforementioned feeding cylinder 2, and the left end of the sleeve 81 is fixed with the right end of the aforementioned barrel 1, and the right end of the sleeve 81 is fixed with the right end of the feeding cylinder 2, a set of heat dissipation fins 811 (also referred to as "heat dissipation fins" hereinafter) is formed on the outer wall of the left end of the sleeve 81 and around the periphery of the outer wall at intervals, the wind shield 82 is fixed with the sleeve 81 in the area corresponding to the set of heat dissipation fins 811, the set of heat dissipation fins 811 is shielded in a wind shield cavity 822 of the wind shield 82 by the wind shield 82, and a wind shield air outlet 821 communicated with the outside is formed on the right side of the wind shield 82, the wind shield motor 83 is in driving fit with the wind shield air-supplying fan 84 and the wind, an air outlet of the fan housing blower 84 is communicated with the fan housing cavity 822 of the fan housing 82, and the hopper 7 is fixed to an upper portion of the right end of the sleeve 81.

A cylinder flange 13 is formed at the right end of the cylinder 1, a cylinder left flange 812 is formed at the left end of the sleeve 81, the cylinder left flange 812 is fixed to the cylinder flange 13 by a sleeve left flange fixing screw 8121, a feed cylinder right flange 23 is formed at the right end of the feed cylinder 2, a sleeve right flange 813 is formed at the right end of the sleeve 81, and the sleeve right flange 813 is fixed to the feed cylinder right flange 23 by a sleeve right flange fixing screw 8131.

A material guiding pipe fixing seat 814 is formed at the right end of the sleeve 81 and at the right side of the wind shield 82, a material guiding pipe fixing seat cavity 8141 of the material guiding pipe fixing seat 814 is communicated with the feeding cylinder cavity 21 through a feeding cylinder feeding port 24 arranged on the feeding cylinder 2, wherein a material guiding pipe 8142 is fixed on the material guiding pipe fixing seat 814, the lower part of the hopper 7 is matched and connected with the material guiding pipe 8142, and specifically, the lower part of the hopper 7 is matched and connected and fixed with an upper flange of the material guiding pipe 8142.

As shown in fig. 2, a hood intake chamber 823 communicating with the hood chamber 822 extends on a downward side of the hood 82 at a position corresponding to the hood air blower 84, and the hood air blower 84 and the hood air blower motor 83 are fixed to the hood 82 at a position corresponding to the hood intake chamber 823; a thermocouple 815 is disposed on the sleeve 81 and to the right of the set of heat sink fins 811.

In accordance with common practice, the thermocouple 815 is electrically connected to the electrical box in use, the temperature of the sleeve 81 is sensed by the thermocouple 815 and a signal is fed back to the electrical box, which instructs the hood blower motor 83 whether to operate, for example when the thermocouple senses a temperature below a set temperature, the hood blower motor 83 operates, and vice versa.

A screw shaft seat connecting flange 816 is fixed at the right end of the sleeve 81 and at a position corresponding to the outer side of the sleeve right flange 813, the screw shaft head 31 of the screw 3 extends to the screw shaft seat 311, the screw shaft seat 311 is fixed with the screw shaft seat connecting flange 816 by a screw shaft seat fixing screw 3111, and the screw shaft head 31 is in transmission connection with the screw driving mechanism 4 at the position of the screw shaft seat 311.

Continuing to refer to fig. 1, the screw driving mechanism 4 includes a reduction box driving wheel 41 and a reduction box 42, the reduction box 42 is fixed with the frame under use, a reduction box power output shaft 421 of the reduction box 42 extends to the screw shaft seat 311 at a position corresponding to the screw shaft head 31, the screw shaft head 31 is in transmission connection with the reduction box power output shaft 421 through a flat key 312 thereon, the reduction box driving wheel 41 is fixed with a reduction box power input shaft 422 of the reduction box 42, and the reduction box driving wheel 41 is in transmission connection with the driving motor through a transmission belt under use.

The plastic particles are introduced from the hopper 7 and enter the feeding barrel cavity 21 through the feeding tube cavity of the feeding tube 814, the feeding tube fixing seat cavity 8141 and the feeding barrel feeding hole 24 in sequence, meanwhile, a driving motor of a structural system of the screw driving mechanism 4 which is not shown in fig. 1 drives a driving motor main wheel, a reduction gearbox driving wheel 41 is driven by the driving motor main wheel through a transmission belt such as a belt, a reduction gearbox power input shaft 422 is driven by the reduction gearbox driving wheel 41, the reduction gearbox 42 decelerates and a reduction gearbox power output shaft 421 of the reduction gearbox 42 drives a screw shaft head 31 to rotate the screw 3, and at the moment, the plastic particles entering the feeding barrel cavity 21 are extruded from the barrel melt extrusion head 12 from right to left under the movement of the screw 3 and under the state of forming a melt. In the foregoing process, the water cooling mechanism 8 is in a working state, specifically: the fan housing air supply motor 83 operates to drive the fan housing air supply fan 84, and the fan outlet of the fan housing air supply fan 84 introduces the outside air into the fan housing cavity 822 through the fan housing air inlet cavity 823 to exchange heat with the group of heat dissipation fins 811, that is, to cool the group of heat dissipation fins 811, and the air in the fan housing cavity 822 with the increased temperature is led out from the fan housing air outlet 821, and the circulation is performed in such a way that the temperature in the area of the feeding cylinder 2 is reduced, and the reduced degree is sensed by the thermocouple 815.

Specifically, the group of screw temperature zone temperature regulating and controlling mechanisms 6 are controlled by P L C (programmable controller) of an electric box, so that the rotating speed of the motor 61 of each screw temperature zone temperature regulating and controlling mechanism 6 in the group of screw temperature zone temperature regulating and controlling mechanisms 6 is controlled by P L C to change the rotating speed of the fan 62, thereby changing the air supply amount of the fan 62 and finally controlling the temperatures of different temperature zones corresponding to the machine barrel 1.

Furthermore, as can be seen from the above description in conjunction with fig. 1: the whole screw 3 is respectively called as a material guiding section, a conveying heating section, an exhaust releasing section and a compression section from right to left, the material guiding section corresponds to the feeding cylinder cavity 21, the conveying heating section is positioned between the right side of the exhaust releasing section and the material guiding section, and the compression section is an area between the left side corresponding to the exhaust releasing section and the machine barrel melt extrusion head 12. It is also shown in fig. 1 that the thread on the screw body in the region of the screw 3 corresponding to the compression section is a double-flight thread.

To sum up, the technical solution provided by the present invention remedies the defects in the prior art, successfully completes the invention task, and faithfully embodies the technical effects mentioned in the above technical effect column by the applicant.

Claims

1. A screw extrusion device with air cooling function comprises a machine barrel (1) and a feeding barrel (2), wherein the left end of the feeding barrel (2) is matched and connected with the right end of the machine barrel (1), a feeding barrel cavity (21) of the feeding barrel (2) is communicated with a machine barrel cavity (11) of the machine barrel (1), and a machine barrel melt extrusion head (12) is matched and connected with the left end of the machine barrel (1); a screw (3) and a screw driving mechanism (4), wherein the screw (3) is arranged in the barrel cavity (11), the left end of the screw (3) extends out of the barrel cavity (11) and extends to the barrel melt extrusion head (12), the right end of the screw (3) extends out of the feeding barrel cavity (21) and is formed with a screw head (31), the screw head (31) is in transmission connection with the screw driving mechanism (4), and the screw driving mechanism (4) is arranged on the frame in a use state; the heating device comprises a group of heating rings (5), the heating rings (5) are distributed at intervals in a state of corresponding to each temperature zone of the screw (3) and are arranged outside the machine barrel (1), an annular cavity (51) is respectively formed on the inner wall of the heating rings (5) and is positioned in the middle of the heating rings (5) in the length direction around the heating rings (5), ventilating grooves (511) are respectively formed at two sides of the cavity wall of the annular cavity (51) at intervals, a heat insulating ring (52) is respectively arranged outside the heating rings (5), the space between every two adjacent heating rings (5) is formed into an air outlet cavity (53), and the air outlet cavity (53) is communicated with the ventilating grooves (511); the number of the screw temperature zone temperature adjusting and controlling mechanisms (6) is equal to that of the heating rings (5), and the screw temperature zone temperature adjusting and controlling mechanisms are fixed with the heat insulation rings (52) and communicated with the annular cavity (51); a hopper (7), wherein the hopper (7) is arranged corresponding to the position of the feeding cylinder (2); the device is characterized by also comprising an air cooling mechanism (8), wherein the air cooling mechanism (8) is arranged outside the feeding cylinder (2), and the hopper (7) is fixed with the air cooling mechanism (8) at a position corresponding to the feeding cylinder (2) and is communicated with the feeding cylinder cavity (21).

2. The screw extrusion apparatus with air cooling function according to claim 1, wherein a fan attachment seat (54) is formed on each of said plurality of heating rings (5) and at a position corresponding to said plurality of screw warm zone temperature adjusting and controlling means (6), said fan attachment seat (54) is formed with an attachment seat air intake chamber (541), said attachment seat air intake chamber (541) communicates with said annular chamber (51), and said plurality of screw warm zone temperature adjusting and controlling means (6) is fixed to said heat insulating ring (52) at a position corresponding to said fan attachment seat (54).

3. Screw extrusion apparatus with air cooling function according to claim 2, characterized in that said set of screw warm-zone temperature regulation control means (6) each comprises a motor (61) and a fan (62), the motor (61) is in driving fit with the fan (62) and fixed with said heat insulating ring (52) by the fan (62) together with the motor (61) at a position corresponding to said fan adapter (54), and the fan outlet of the fan (62) is communicated with said adapter air inlet chamber (541).

4. Screw extrusion apparatus with air cooling function according to claim 1, characterised in that the left end of the feed cylinder (2) is fixed with the right end face of the barrel (1) by a feed cylinder fixing screw (22).

5. The screw extrusion apparatus with an air cooling function according to claim 1, wherein said air cooling mechanism (8) comprises a sleeve (81), a fan housing (82), a fan housing air supply motor (83) and a fan housing air supply fan (84), the sleeve (81) is fitted around said feed cylinder (2), and a left end of the sleeve (81) is fixed to a right end of said cylinder (1), and a right end of the sleeve (81) is fixed to a right end of the feed cylinder (2), a set of heat dissipating fins (811) is formed on an outer wall of the left end of the sleeve (81) and around the periphery of the outer wall in a spaced state, the fan housing (82) is fixed to the sleeve (81) in a region corresponding to the set of heat dissipating fins (811), the set of heat dissipating fins (811) is shielded by the fan housing (82) in a fan housing cavity (822) of the fan housing (82), and an air outlet (821) communicating with the outside is formed on the right side of the fan housing (82), the fan cover air supply motor (83) is in transmission fit with the fan cover air supply fan (84), the fan cover air supply fan (84) and the fan cover air supply motor (83) are fixed to the fan cover (82), an air outlet of the fan cover air supply fan (84) is communicated with a fan cover cavity (822) of the fan cover (82), and the hopper (7) is fixed to the upper portion of the right end of the sleeve (81).

6. The screw extrusion device with an air cooling function according to claim 5, wherein a barrel flange (13) is formed at the right end of the barrel (1), a sleeve left flange (812) is formed at the left end of the sleeve (81), the sleeve left flange (812) is fixed to the barrel flange (13) by a sleeve left flange fixing screw (8121), a feed barrel right connecting flange (23) is formed at the right end of the feed barrel (2), a sleeve right flange (813) is formed at the right end of the sleeve (81), and the sleeve right flange (813) is fixed to the feed barrel right connecting flange (23) by a sleeve right flange fixing screw (8131).

7. The screw extrusion device with an air cooling function according to claim 5, wherein a guide tube fixing seat (814) is formed at a right end of the sleeve (81) and at a position on a right side of the air hood (82), a guide tube fixing seat cavity (8141) of the guide tube fixing seat (814) is communicated with the feed cylinder cavity (21) through a feed cylinder feed port (24) formed in the feed cylinder (2), wherein a guide tube (8142) is fixed on the guide tube fixing seat (814), and a lower portion of the hopper (7) is coupled with the guide tube (8142).

8. The screw extrusion device with an air cooling function according to claim 5, wherein a hood air intake chamber (823) communicating with said hood chamber (822) extends on a side of said hood (82) facing downward and at a position corresponding to said hood air supply fan (84), said hood air supply fan (84) together with said hood air supply motor (83) being fixed to said hood (82) at a position corresponding to said hood air intake chamber (823); a thermocouple (815) is disposed on the sleeve (81) and to the right of the set of heat sink fins (811).

9. Screw extrusion apparatus with air cooling function according to claim 6, characterized in that a screw shaft seat connecting flange (816) is fixed at the right end of the sleeve (81) and at the position corresponding to the outer side of the sleeve right flange (813), the screw shaft head (31) of the screw (3) extends to the screw shaft seat (311), the screw shaft seat (311) is fixed with the screw shaft seat connecting flange (816) by a screw shaft seat fixing screw (3111), and the screw shaft head (31) is in transmission connection with the screw driving mechanism (4) at the position of the screw shaft seat (311).

10. The screw extrusion device with the air cooling function according to claim 9, wherein the screw driving mechanism (4) comprises a reduction gearbox driving wheel (41) and a reduction gearbox (42), the reduction gearbox (42) is fixed with the frame under use, a reduction gearbox power output shaft (421) of the reduction gearbox (42) extends to the screw shaft seat (311) at a position corresponding to the screw shaft head (31), the screw shaft head (31) is in transmission connection with the reduction gearbox power output shaft (421), the reduction gearbox driving wheel (41) is fixed with a reduction gearbox power input shaft (422) of the reduction gearbox (42), and the reduction gearbox driving wheel (41) is in transmission connection with the driving motor through a transmission belt under use.