CN211709991U

CN211709991U - Extruder barrel heater

Info

Publication number: CN211709991U
Application number: CN201922275953.XU
Authority: CN
Inventors: 范宗元
Original assignee: Nanjing Meiya Rubber & Plastic Machinery Manufacturing Co ltd
Current assignee: Nanjing Meiya Rubber & Plastic Machinery Manufacturing Co ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-10-20
Anticipated expiration: 2029-12-18

Abstract

The utility model discloses an extruder barrel heater, which comprises a barrel and a feeding screw rod arranged in the barrel, wherein the barrel is a round pipe, the feeding screw rod is arranged in the barrel body, the outer side of the rod body of the feeding screw rod is provided with a thread structure, the hollow rod body of the feeding screw rod is provided with a heat conduction oil circulation cavity, the side wall of the barrel sequentially comprises an outer protection layer, a primary heat preservation layer, a secondary heat preservation layer and an inner container layer from outside to inside, and the outer protection layer, the primary heat preservation layer, the secondary heat preservation layer and the inner container layer are all tubular structures; through adopting to set up the conduction oil circulation chamber in the feed screw, utilize the conduction oil to heat the inner chamber of barrel, compare traditional barrel and set up heating device in the cavity of barrel lateral wall, it has avoided arranging the circuit in barrel lateral wall cavity, thereby avoided the problem that the circuit is ageing damage because of the high temperature accelerates in barrel lateral wall cavity, thereby improved the life of device, and compare and arrange resistance heating wire at the barrel lateral wall, it can effectually reduce the volume of barrel.

Description

Extruder barrel heater

Technical Field

The utility model particularly relates to an extruder barrel heater.

Background

The extruder belongs to one of plastic manufacturing machines, the extruder head can be divided into a right-angle extruder head, an oblique-angle extruder head and the like according to the material flow direction of the extruder head and the included angle of the central line of a screw rod, the screw extruder can fully plasticize and uniformly mix materials by means of pressure and shearing force generated by rotation of the screw rod, the plastic extruder can be basically classified into a double-screw extruder, a single-screw extruder, a rare multi-screw extruder and a non-screw extruder through a die, and a heating device belongs to an important component part of the barrel part of the extruder.

However, the heating device of the conventional extruder barrel is usually disposed in the side wall of the barrel, and because the inner space of the side wall is limited, the arrangement position of the junction box is close to the body of the heater, thereby resulting in the possibility of failure of the high-temperature cable in the device, and the manufacturing cost of the extruder is further increased by adopting some materials with higher high-temperature resistance effect.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an extruder barrel heater to prior art's weak point to reach the purpose that improves device heating effect and life.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an extruder barrel heater, is including barrel and the feed screw of setting in the barrel inside, the barrel is the pipe, is provided with feed screw in its body, feed screw's the body of rod outside is equipped with the helicitic texture, and its body of rod cavity is provided with the conduction oil circulation chamber, the lateral wall outside-in of barrel is outer protective layer, one-level heat preservation, second grade heat preservation and inner bag layer in proper order, outer protective layer, one-level heat preservation, second grade heat preservation and inner bag layer are the tubular structure.

Preferably, the head end and the tail end of the heat conduction oil circulation cavity are connected with an inlet and an outlet of the heat conduction oil circulation system.

Preferably, the distance between the bottom of the thread groove of the thread structure on the feeding screw and the side wall of the heat conduction oil circulation cavity is not less than two centimeters.

Preferably, the inner diameter of the outer protective layer is matched with the outer diameter of the primary heat-insulating layer, the inner diameter of the secondary heat-insulating layer is matched with the outer diameter of the inner container layer, the joints of the inner container layer and the secondary heat-insulating layer are connected through glue, and a cavity is reserved between the primary heat-insulating layer and the secondary heat-insulating layer.

Preferably, be equipped with the rubber support block in the cavity between one-level heat preservation and the second grade heat preservation, the rubber support block is the round platform body, and its lower terminal surface splices with the inner wall of one-level heat preservation is fixed, and the outer wall of up end and second grade heat preservation is fixed splices, and the rubber support block evenly is provided with a plurality ofly in the cavity between one-level heat preservation and the second grade heat preservation.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the heat-conducting oil circulation cavity is arranged in the feeding screw, and the heat-conducting oil is utilized to heat the inner cavity of the machine barrel, so that compared with the traditional machine barrel, the heating device is arranged in the cavity of the side wall of the machine barrel, the circuit is prevented from being arranged in the cavity of the side wall of the machine barrel, the problem that the circuit is aged and damaged at high speed due to high temperature in the cavity of the side wall of the machine barrel is solved, the service life of the device is prolonged, and compared with the traditional machine barrel, the resistance heating wire is arranged on the side wall of the machine barrel, the volume of;

2. and set up two-layer insulation construction of one-level heat preservation and second grade heat preservation in the lateral wall of barrel to leave the cavity between two-layer heat preservation, improve the heat preservation effect of barrel greatly, thereby reduce thermal scattering and disappearing, can reduce the consumption of the energy under a certain extent.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the feeding screw of the present invention;

fig. 3 is a side view of the barrel of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

fig. 5 is an enlarged view of the structure at B in fig. 4.

In the figure: the device comprises a machine barrel 1, a feeding screw 2, a heat conduction oil circulation cavity 3, a thread structure 4, an outer protection layer 5, an inner container layer 6, a primary heat insulation layer 7, a secondary heat insulation layer 8 and a rubber supporting block 9.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides an extruder barrel heater, including barrel 1 and the feed screw 2 of setting in 1 inside of barrel, barrel 1 is the pipe, be provided with feed screw 2 in its body, the body of rod outside of feed screw 2 is equipped with helicitic texture 4, and its body of rod cavity is provided with conduction oil circulation chamber 3, the lateral wall outside-in of barrel 1 is outer protective layer 5 in proper order, one-level heat preservation 7, second grade heat preservation 8 and inner bag layer 6, outer protective layer 5, one-level heat preservation 7, second grade heat preservation 8 and inner bag layer 6 are the tubular structure, one-level heat preservation 7 is thermal-insulated asbestos board with second grade heat preservation 8, inner bag layer 6 is the stainless steel inner bag.

Furthermore, the head end and the tail end of the heat conduction oil circulation cavity 3 are connected with the inlet and the outlet of the heat conduction oil circulation system, the heat conduction oil circulation cavity 3 is arranged in the feeding screw rod 2, the inner cavity of the machine barrel 1 is heated by utilizing heat conduction oil, compared with the traditional machine barrel 1 in which a heating device is arranged in the cavity of the side wall of the machine barrel 1, a circuit is prevented from being arranged in the cavity of the side wall of the machine barrel 1, the problem that the circuit is aged and damaged at high temperature in the cavity of the machine barrel is solved, the service life of the device is prolonged, compared with the traditional machine barrel 1 in which a resistance heating wire is arranged on the side wall of the machine barrel, the volume of the machine barrel 1 can be effectively reduced, the two ends of the heat conduction oil circulation cavity 3 can be sealed mechanically, and a heat conduction oil pipe;

furthermore, the distance between the bottom of the thread groove of the thread structure 4 on the feeding screw 2 and the side wall of the heat conduction oil circulation cavity 3 is not less than two centimeters, so that the reduction of the axial strength of the rod body of the feeding screw 2 is avoided;

furthermore, the inner diameter of the outer protection layer 5 is matched with the outer diameter of the primary heat-insulating layer 7, the inner diameter of the secondary heat-insulating layer 8 is matched with the outer diameter of the inner container layer 6, the joints of the inner container layer and the primary heat-insulating layer are connected through glue, a cavity is reserved between the primary heat-insulating layer 7 and the secondary heat-insulating layer 8, two heat-insulating structures of the primary heat-insulating layer 7 and the secondary heat-insulating layer 8 are arranged in the side wall of the machine barrel 1, and a cavity is reserved between the two heat-insulating structures, so that the heat-insulating effect of the machine barrel is greatly improved, heat loss;

furthermore, a rubber supporting block 9 is arranged in a cavity between the primary heat-insulating layer 7 and the secondary heat-insulating layer 8, the rubber supporting block 9 is a round table body, the lower end face of the rubber supporting block 9 is fixedly connected with the inner wall of the primary heat-insulating layer 7 in an adhesive manner, the upper end face of the rubber supporting block is fixedly connected with the outer wall of the secondary heat-insulating layer 8 in an adhesive manner, a plurality of rubber supporting blocks 9 are uniformly arranged in the cavity between the primary heat-insulating layer 7 and the secondary heat-insulating layer 8, and the rubber supporting block 9 plays a role in the cavity between the primary heat-insulating layer 7 and the secondary heat-insulating layer 8, so;

the working principle is as follows: during the in-service use, through adopting to set up conduction oil circulation chamber 3 in feed screw 2, utilize the conduction oil to heat the inner chamber of barrel, compare traditional barrel 1 and set up heating device in the cavity of barrel lateral wall, it has avoided arranging the circuit in barrel 1 lateral wall cavity, thereby the problem of the circuit ageing damage because of the high temperature accelerates in barrel 1 lateral wall cavity has been avoided, thereby the life of device has been improved, and compare and arrange resistance heater strip at barrel 1 lateral wall, it can effectually reduce the volume of barrel, and set up two-layer insulation construction of one-level heat preservation 7 and second grade heat preservation 8 in the lateral wall of barrel 1, and leave the cavity between two-layer heat preservation, improve the heat preservation effect of barrel 1 greatly, thereby reduce thermal scattering and disappearing, can reduce the consumption of the energy under a certain degree.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A heater of a machine barrel of an extruder comprises the machine barrel (1) and a feeding screw (2) arranged inside the machine barrel (1), and is characterized in that: barrel (1) is the pipe, is provided with feed screw (2) in its body, the body of rod outside of feed screw (2) is equipped with helicitic texture (4), and its body of rod cavity is provided with conduction oil circulation chamber (3), the lateral wall outside-in of barrel (1) is outer protective layer (5), one-level heat preservation (7), second grade heat preservation (8) and inner bag layer (6) in proper order, outer protective layer (5), one-level heat preservation (7), second grade heat preservation (8) and inner bag layer (6) are the tubular structure.

2. An extruder barrel heater as defined in claim 1 wherein: the head end and the tail end of the heat conduction oil circulating cavity (3) are connected with an inlet and an outlet of the heat conduction oil circulating system.

3. An extruder barrel heater as defined in claim 1 wherein: the distance between the bottom of the thread groove of the thread structure (4) on the feeding screw (2) and the side wall of the heat conduction oil circulation cavity (3) is not less than two centimeters.

4. An extruder barrel heater as defined in claim 1 wherein: the inner diameter of the outer protective layer (5) is matched with the outer diameter of the primary heat-insulating layer (7), the inner diameter of the secondary heat-insulating layer (8) is matched with the outer diameter of the inner container layer (6), the joints of the inner container layer and the secondary heat-insulating layer are connected through glue, and a cavity is reserved between the primary heat-insulating layer (7) and the secondary heat-insulating layer (8).

5. An extruder barrel heater as defined in claim 4 wherein: be equipped with rubber support block (9) in the cavity between one-level heat preservation (7) and second grade heat preservation (8), rubber support block (9) are the round platform body, and its lower terminal surface splices with the inner wall of one-level heat preservation (7) is fixed, and the outer wall of up end and second grade heat preservation (8) is fixed splices, and rubber support block (9) evenly is provided with a plurality ofly in the cavity between one-level heat preservation (7) and second grade heat preservation (8).