CN218196847U

CN218196847U - Cooling barrel for extruder

Info

Publication number: CN218196847U
Application number: CN202222477722.9U
Authority: CN
Inventors: 杜珲; 陈志强; 叶连芝
Original assignee: Jiangsu Yuesheng Technology Co ltd
Current assignee: Jiangsu Yuesheng Technology Co ltd
Priority date: 2022-09-19
Filing date: 2022-09-19
Publication date: 2023-01-03
Anticipated expiration: 2032-09-19

Abstract

The utility model belongs to the technical field of the technique of the relevant equipment of extruder and specifically relates to a cooling barrel for extruder is related to, it includes the barrel, the center of barrel is run through and has been seted up and has been inlayed the hole, it is provided with embedded sleeve to inlay downthehole the dismantlement, embedded sleeve's center is offered and is used for holding screw rod pivoted defeated material passageway, embedded sleeve with be formed with the spiral cooling runner that supplies cooling medium to flow between the barrel, the cooling runner winds the axis of barrel encircles and extends along the axis direction. This application has the effect that reduces the radial deformation that the barrel produced through the cooling medium heat transfer in-process.

Description

Cooling barrel for extruder

Technical Field

The application relates to the technical field of extruder-related equipment, in particular to a cooling cylinder for an extruder.

Background

The screw extruder is a machine which can fully plasticize and uniformly mix materials by means of pressure and shearing force generated by rotation of a screw, and outputs the materials through the shaping of a neck mold. The extruder barrel is used as an important component of the extruder, the extruder barrel needs to be cooled during operation, so that the temperature of molten materials in a material conveying channel in the extruder barrel is maintained within a process requirement range, the conventional design is that a plurality of parallel channels are uniformly distributed in the circumferential direction of the outer side of the material conveying channel, and a worker circularly fills cooling media into a cooling channel for cooling.

In view of the above-mentioned related technologies, the inventor found that, due to flow and structural limitations, when viewed from a section of the barrel perpendicular to its length direction, the flow of the cooling medium among different channels has differences in sequence, flow and flow velocity, which may cause the barrel to generate large temperature differences at different channels on the section perpendicular to its length direction, and further cause thermal deformation of the barrel on two sides of its axis on the radial section, so that the barrel may generate radial deformation in the section perpendicular to its length direction.

SUMMERY OF THE UTILITY MODEL

In order to reduce the radial deformation of barrel through the heat transfer in-process production of cooling medium, this application provides a cooling barrel for extruder.

The application provides a cooling barrel for extruder adopts following technical scheme:

the utility model provides a cooling barrel for extruder, includes the barrel, the center of barrel is run through and has been seted up and has been inlayed the hole, it can dismantle in the hole and be provided with embedded sleeve, embedded sleeve's center is offered and is used for holding screw rod pivoted defeated material passageway, embedded sleeve with be formed with the spiral cooling runner that supplies cooling medium to flow between the barrel, the cooling runner winds the axis of barrel encircles and extends along the axis direction.

By adopting the technical scheme, when the cross section perpendicular to the length direction of the cylinder body is seen, the cooling effect on the cylinder body and the embedded sleeve when the cooling medium flows in any circle in the cooling channel is symmetrically distributed on the axis of the cylinder body, so that the thermal distribution of the cylinder body and the embedded sleeve on two sides of the axis in the radial direction is relatively consistent, the temperature difference of the cylinder body on two sides of the material conveying channel in the cross section perpendicular to the length direction of the cylinder body can be reduced, the thermal deformation difference of two sides is reduced, and the radial deformation of the cylinder body is effectively weakened. And the embedded sleeve can be detached, which is beneficial to the subsequent cleaning of accumulated impurities in the cooling flow channel and the prolonging of the service life of the cylinder body.

In a specific possible implementation scheme, the outer wall of the embedded sleeve is provided with a spiral groove, the spiral groove extends around the axis of the embedded sleeve and along the axis direction, and the spiral groove and the inner wall of the cylinder body are sealed to form the cooling flow channel.

Through adopting above-mentioned technical scheme, the cooling to the barrel is more even when spiral cooling runner makes the coolant flow the round in cooling runner, be favorable to reducing the radial deformation that the barrel produced at coolant heat transfer in-process, and it is closer with the distance of defeated material passageway inner wall to compare the linear type cooling runner that arranges in traditional mode with the distance of defeated material passageway inner wall, it is more intensive to arrange, area of contact with the barrel is bigger, it is more even to be favorable to making the cooling, be favorable to promoting cooling rate, be favorable to promoting the cooling effect.

In a specific implementation scheme, a liquid inlet pipe and a liquid outlet pipe are arranged on the side face of the barrel body, the liquid inlet pipe and the liquid outlet pipe are close to the end portion of the barrel body, and the liquid inlet pipe and the liquid outlet pipe are communicated with the two ends of the spiral groove in a one-to-one correspondence mode.

By adopting the technical scheme, the cooling medium enters the cooling flow channel through the liquid inlet pipe, absorbs the heat of the embedded sleeve and the barrel, and flows out of the liquid outlet pipe to complete the cooling function.

In a specific embodiment, the material conveying channel is a twin-screw channel.

By adopting the technical scheme, the shape of the material conveying channel is matched with the double screws, so that the smoothness of the double screws in rotating and feeding is favorably kept.

In a specific possible embodiment, flanges are arranged at two ends of the cylinder, an installation groove is formed in the flange at one end of the cylinder, a flange is arranged at one end of the embedded sleeve, and the flange is embedded in the installation groove when the embedded sleeve is installed in the cylinder; and the flange is provided with a first screw hole for being in threaded connection with the flange.

Through adopting above-mentioned technical scheme, flange and barrel spiro union, embedded sleeve are fixed mutually with the barrel, are favorable to promoting the accuracy nature of installation angle when the embedded sleeve is installed to the embedded hole for the position cooperation of defeated material passageway and screw rod is more accurate, is favorable to making embedded sleeve position under operating condition remain stable.

In a specific implementation, a first sealing rubber ring is arranged between the flange and the mounting groove.

Through adopting above-mentioned technical scheme, the sealed rubber ring one will probably follow the cooling runner and ooze the cooling medium sealing outside the clearance between flange and mounting groove between embedded sleeve and barrel inner wall, is favorable to reducing the emergence of the condition of cooling medium in leaking to the defeated material passageway from the gap between flange and mounting groove.

In a specific implementation scheme, the inner wall of barrel has been seted up the seal ring groove, the seal ring groove is located the barrel is kept away from the one end of mounting groove, be provided with sealing rubber ring two in the seal ring groove, sealing rubber ring two be used for right embedded sleeve with seal between the barrel inner wall.

Through adopting above-mentioned technical scheme, sealed rubber ring two will probably follow the cooling runner and ooze the coolant seal between embedded sleeve and barrel inner wall, is favorable to reducing the emergence that coolant oozes the condition from the tip of embedded sleeve and barrel.

In a specific possible implementation scheme, a plurality of heat dissipation holes penetrating through two ends of the machine barrel are formed in the barrel wall of the barrel body, and the heat dissipation holes are used for circularly filling cooling media.

Through adopting above-mentioned technical scheme, the louvre mainly used reduces the bulk temperature of barrel, and the cooling channel is used for reducing embedded sleeve and defeated material passageway temperature fast, and the two mutually supports, and the internal nested sleeve that can be sensitive rapidly cools down, and then cools down to the interior melting material of defeated material passageway, is favorable to keeping the stability of extrusion molding in-process temperature technological parameter.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by arranging the spiral cooling flow channel, the thermal distribution of the cylinder body and the embedded sleeve on two sides of the axis in the radial direction is relatively consistent, the temperature difference of the cylinder body on two sides of the material conveying channel on the section perpendicular to the length direction of the cylinder body can be reduced, the thermal deformation difference of two sides is further reduced, and the radial deformation of the cylinder body is effectively weakened;

2. the sealing rubber ring I and the sealing rubber ring II are arranged, so that the situation that cooling media seep out from the end parts of the embedded sleeve and the cylinder body is favorably reduced;

3. through setting up the louvre, the louvre is mutually supported with the cooling flow channel two, and the internal nested section of thick bamboo that can be sensitive rapidly is cooled down, and then cools down to the interior melting material of defeated material passageway, is favorable to keeping the stability of extrusion molding in-process temperature process parameter.

Drawings

Fig. 1 is a schematic structural view of a cooling cylinder for an extruder in example 1 of the present application.

Fig. 2 is a sectional view showing the internal structure of a cooling cylinder for an extruder in example 1 of the present application.

Fig. 3 is a schematic structural view for embodying an embedded sleeve in embodiment 1 of the present application.

Fig. 4 is a schematic structural view of a cooling cylinder for an extruder in example 2 of the present application.

Fig. 5 is an exploded view of a cooling cylinder structure for an extruder used in example 2 of the present application.

Fig. 6 is a sectional view showing the internal structure of a cooling cylinder for an extruder in example 2 of the present application.

Reference number specification, 1, cylinder; 11. embedding holes; 12. a flange; 121. mounting grooves; 122. a screw hole II; 13. sealing the ring groove; 14. heat dissipation holes; 2. embedding a sleeve; 21. a helical groove; 22. a material conveying channel; 23. a flange; 231. a first screw hole; 24. a bolt; 3. a cooling flow channel; 4. a liquid inlet pipe; 5. a liquid outlet pipe; 6. a first sealing rubber ring; 7. and a second sealing rubber ring.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses a cooling cylinder for an extruder.

Example 1:

referring to fig. 1 and 2, a cooling barrel for extruder comprises a barrel body 1, wherein an embedding hole 11 is formed in the center of the barrel body 1 in a penetrating mode, the embedding hole 11 is a circular hole, an axis of the embedding hole 11 is perpendicular to two end faces of the barrel body 1, an embedded sleeve 2 is detachably mounted in the embedding hole 11, and a material conveying channel 22 used for accommodating a screw rod to feed materials in a rotating mode is formed in the center of the embedded sleeve 2. A spiral cooling flow channel 3 is formed between the embedded sleeve 2 and the wall of the embedded hole 11 on the cylinder 1, and the cooling flow channel 3 surrounds the axis of the cylinder 1 and extends along the axis direction.

When the molten material is conveyed by the screw rod to flow in the conveying channel 22, the cooling medium source enters the cooling channel 3 from the liquid inlet pipe 4 to flow and flows out from the liquid outlet pipe 5, and the embedded sleeve 2 is continuously cooled, so that the molten material in the conveying channel is cooled, and the cooling medium in the embodiment adopts cooling oil. On the cross section perpendicular to the length direction of the cylinder 1, when a cooling medium flows in any circle in the cooling channel 3, the cooling effect on the cylinder 1 and the embedded sleeve 2 is that the axis of the cylinder 1 is symmetrically distributed, so that the thermal distribution of the cylinder 1 and the embedded sleeve 2 on two sides of the axis in the radial direction is relatively consistent, the temperature difference of the cylinder 1 on two sides of the material conveying channel 22 on the cross section perpendicular to the length direction is reduced, the thermal deformation difference of the two sides is further reduced, and the radial deformation of the cylinder 1 is effectively weakened. And the embedded sleeve 2 can be detached, which is beneficial to cleaning of accumulated impurities in the cooling flow channel 3 in the follow-up process and prolonging of the service life of the cylinder body 1.

Referring to fig. 1 and 2, the material conveying channel 22 is a double-screw channel, the material conveying channel 22 penetrates through two ends of the cylinder 1, and the shape of the material conveying channel 22 is matched with the shape of the double screws, so that smoothness of rotating and feeding of the double screws in the material conveying channel is kept.

Referring to fig. 2, the equal integrated into one piece in both ends of barrel 1 has flange 12, inlay hole 11 and run through two flanges 12, lie in on barrel 1 and be provided with feed liquor pipe 4 and drain pipe 5 between two flanges 12, feed liquor pipe 4, the axle center of drain pipe 5 is perpendicular and crossing in the axle center of inlaying hole 11, feed liquor pipe 4 fixed connection extends to and inlays hole 11 inner wall in barrel 1 lateral surface and to barrel 1, and be close to a flange 12 department, drain pipe 5 fixed connection extends to and inlays hole 11 inner wall in barrel 1 lateral surface and to barrel 1, and be close to another flange 12 department.

Referring to fig. 2 and 3, cooling runner 3 is including seting up at the helicla flute 21 of embedded sleeve 2 lateral wall, and helicla flute 21 is extended to the other end by embedded sleeve 2's one end around embedded sleeve 2's axle center and is set up, and when embedded sleeve 2 was installed in barrel 1, feed liquor pipe 4 and drain pipe 5 one-to-one communicate helicla flute 21's both ends, and embedded sleeve 2 is connected for interference fit with embedded hole 11 in this embodiment to guarantee cooling runner 3's leakproofness.

Spiral cooling runner 3 makes cooling medium more even to the cooling of barrel 1 when flowing the round in cooling runner 3, be favorable to reducing the radial deformation that barrel 1 produced at the cooling medium heat transfer in-process, the distance between defeated material passageway 22 inner wall in spiral cooling runner 3 and the barrel 1 is compared in the linear type cooling runner 3 that traditional mode arranged and the distance of defeated material passageway 22 inner wall is closer, it is denser to arrange, area of contact with barrel 1 is bigger, be favorable to making the cooling more even, be favorable to promoting cooling efficiency and cooling effect.

The principle of the cooling cylinder for the extruder in example 1 is as follows: the embedded sleeve 2 is embedded in the embedded hole 11 of the cylinder 1, the molten material flows in the material conveying channel 22, the cooling medium enters the spiral cooling flow channel 3 from the liquid inlet pipe 4 and flows out from the liquid outlet pipe 5, and the cooling medium circularly flows through the cooling flow channel 3 to cool the cylinder and the embedded sleeve.

Example 2:

referring to fig. 4 and 5, the present embodiment is different from embodiment 1 in that a mounting groove 121 is formed in a flange 12 at one end of the cylinder 1 at the position of the insertion hole 11, and a flange 23 is fixedly connected to one end of the insertion sleeve 2, in which the mounting groove 121 is a square hole and the flange 23 is a square hole. When the embedded sleeve 2 is installed in the embedded hole 11 of the cylinder body 1, the flange 23 is embedded in the installation groove 121, the four corners of the flange 23 are respectively provided with a first screw hole 231, the inner bottom wall of the installation groove 121 is provided with a second screw hole 122 corresponding to the first screw hole 231, the first screw hole 231 and the second screw hole 122 are internally screwed with bolts 24, the embedded sleeve 2 is embedded in the installation groove 121 through the flange 23 and is screwed tightly with the cylinder body 1, the accuracy of the installation angle when the embedded sleeve 2 is installed in the embedded hole 11 is improved, the position matching of the material conveying channel 22 and the screw rod is more accurate, and the position of the embedded sleeve 2 in a working state is kept stable.

Referring to fig. 5 and 6, a first sealing rubber ring 6 is arranged on the inner bottom wall of the mounting groove 121, when the flange 23 is embedded and screwed in the mounting groove 121, the bolt 24 penetrates through the first sealing rubber ring 6, the first sealing rubber ring 6 is abutted between the flange 23 and the inner bottom wall of the mounting groove 121, and the first sealing rubber ring 6 seals between the flange 23 and the mounting groove 121, so that a cooling medium which possibly seeps out to the inner wall of the embedded sleeve 2 and the embedded hole 11 along the cooling flow channel 3 is sealed, and the occurrence of the situation that the cooling medium leaks into the material conveying channel 22 from a gap between the flange 23 and the mounting groove 121 is favorably reduced.

Referring to fig. 6, the caulking hole 11 inner wall of barrel 1 that deviates from even flange 23 one side has been seted up sealed ring groove 13, sealed ring groove 13 is close to flange 12, install sealed rubber ring two 7 in the sealed ring groove 13, sealed rubber ring two 7 is sealed between embedded sleeve 2 and the caulking hole 11 inner wall, sealed rubber ring two 7 will probably follow cooling runner 3 and ooze to the cooling medium between embedded sleeve 2 and the caulking hole 11 inner wall and seal in the sealed rubber ring two 7 one side towards flange 23, be favorable to reducing the emergence that cooling medium oozes and then pollute the defeated material passageway 22 condition from the tip of embedded sleeve 2 and barrel 1.

Referring to fig. 5 and 6, a plurality of heat dissipation holes 14 are formed in the wall of the barrel 1, the heat dissipation holes 14 penetrate through the two flanges 12, the flange 23 and the first sealing rubber ring 6, the axes of the heat dissipation holes 14 are parallel to the axis of the embedded hole 11, nine heat dissipation holes 14 are formed in the embodiment, the nine heat dissipation holes 14 are uniformly arranged around the embedded hole 11 in a circumferential manner, cooling flowing media such as cooling water can be circularly filled into the heat dissipation holes 14 for heat dissipation and temperature reduction in practical use, the heat dissipation holes 14 are mainly used for reducing the overall temperature of the barrel 1, the cooling runner 3 is mainly used for rapidly reducing the temperature of the embedded sleeve 2 and the temperature of the molten material, the two are matched with each other, the embedded sleeve 2 and the barrel 1 can be rapidly cooled, the molten material in the material conveying channel 22 is further cooled, the temperature of the molten material in the conveying channel 22 can be flexibly adjusted, and the stability of temperature process parameters in the extrusion molding process can be maintained.

The principle of the cooling cylinder for the extruder in example 2 is as follows: embedded sleeve 2 gomphosis is in the embedded hole 11 of barrel 1, flange 23 is by the tight mounting groove 121 of spiral shell, sealed rubber ring one 6 and sealed rubber ring two 7 are sealed between the tip inner wall of barrel 1 and embedded sleeve 2, the melting material flows in defeated material passageway 22, coolant enters spiral cooling runner 3 by feed liquor pipe 4, flow out by drain pipe 5, coolant circulation flow through cooling runner 3 is in order to cool off the melting material, the cooling medium is filled to the 14 inner circulations of louvre, realize the rapid cooling to the melting material in barrel 1, embedded sleeve 2 and defeated material passageway 22.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A cooling cylinder for an extruder, comprising a cylinder body (1), characterized in that: the center of barrel (1) runs through and has seted up and inlay hole (11), can dismantle in inlaying hole (11) and be provided with embedded sleeve (2), the center of embedded sleeve (2) is seted up and is used for holding screw rod pivoted defeated material passageway (22), embedded sleeve (2) with be formed with spiral cooling runner (3) that supply cooling medium to flow between barrel (1), cooling runner (3) wind the axis of barrel (1) encircles and extends along the axis direction.

2. A cooling barrel for an extruder as defined in claim 1, wherein: the outer wall of the embedded sleeve (2) is provided with a spiral groove (21), the spiral groove (21) extends around the axis of the spiral groove (21) and along the axis direction, and the spiral groove (21) and the inner wall of the barrel body (1) are sealed to form the cooling flow channel (3).

3. A cooling barrel for an extruder as defined in claim 2, wherein: the side of barrel (1) is provided with feed liquor pipe (4) and drain pipe (5), feed liquor pipe (4) with drain pipe (5) are close to the tip of barrel (1), feed liquor pipe (4) with drain pipe (5) one-to-one intercommunication the both ends of helicla flute (21).

4. A cooling barrel for an extruder as defined in claim 1, wherein: the material conveying channel (22) is a double-screw channel.

5. A cooling barrel for an extruder as defined in claim 1, wherein: flanges (12) are arranged at two ends of the barrel body (1), one flange (12) is provided with an installation groove (121), one end of the embedded sleeve (2) is provided with a flange (23), and when the embedded sleeve (2) is installed in the barrel body (1), the flange (23) is embedded in the installation groove (121);

the flange (23) is provided with a first screw hole (231) for being in threaded connection with the flange (12).

6. A cooling barrel for an extruder as defined in claim 5, wherein: and a first sealing rubber ring (6) is arranged between the flange (23) and the mounting groove (121).

7. A cooling barrel for an extruder as defined in claim 5, wherein: sealed annular (13) have been seted up to the inner wall of barrel (1), sealed annular (13) are located barrel (1) is kept away from the one end of mounting groove (121), be provided with sealing rubber ring two (7) in sealed annular (13), sealing rubber ring two (7) are used for right embedded sleeve (2) with seal between barrel (1) the inner wall.

8. A cooling barrel for an extruder as defined in claim 1, wherein: the cylinder wall of the cylinder body (1) is internally provided with a plurality of heat dissipation holes (14) penetrating through two ends of the cylinder, and the heat dissipation holes (14) are used for circularly filling cooling media.