CN213273218U

CN213273218U - Conduction oil convection type uniform heating roller

Info

Publication number: CN213273218U
Application number: CN202021672368.XU
Authority: CN
Inventors: 焦杰明; 杨威
Original assignee: Guangdong Taijin Intelligent Packaging Co ltd
Current assignee: Guangdong Taijin Intelligent Packaging Co ltd
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2021-05-25
Anticipated expiration: 2030-08-12

Abstract

The utility model provides a conduction oil convection type even heating roller, including roller, outer barrel and interior barrel, the both ends of outer barrel are equipped with the end cover, the roller passes two end cover settings and sets up with the axle center with the end cover, the cover is equipped with the heating jacket on the roller, interior barrel cover is established in the outside of heating jacket, it forms oil pocket and an end cover and is equipped with hydraulic fluid port and oil pocket intercommunication to leave the space between outer barrel and the interior barrel on oil pocket and the one end cover, be equipped with the end cap on the hydraulic fluid port, outer barrel thread groove on the medial surface of outer barrel, the outside of interior barrel is equipped with interior barrel thread groove. The utility model provides a pair of conduction oil convection type even heating roller, simple structure, convenient to use heats evenly and can not cause the energy extravagant.

Description

Conduction oil convection type uniform heating roller

Technical Field

The utility model relates to a roller, in particular to conduction oil to STREAMING even heating roller.

Background

At present, heating rolls are required in the processes of calendering, stretching films, gluing, blowing, etc. The heating roller is cylindrical and is in line contact with the heated body to realize heat conduction. The conventional heating modes mainly comprise high-temperature water heating, steam heating, electric heating, heat-conducting oil heating and the like. The electrical heating is direct heating within the roller by electrical heating elements. The liquid and gas heating mode is that high temperature liquid or gas is led into the flow channel through the rotary joint for heating through the temperature rise or gasification of an external boiler.

The common electric heating roller is directly heated in the roller through an electric heating element, the electric heating element is made of different materials such as carbon fiber, ceramics, resistance wires and the like, and the defect of the maximum solid heat conduction is that the roller surface temperature is not uniform due to the existence of a heating pipe gap, the temperature difference at different positions is obvious, and the stability and the uniformity cannot be realized for the process with high heat-sensitive requirement. Based on the liquid or gaseous heating mode, the roller is hollow, and the external boiler introduces the heated liquid or gaseous state into the roller inner flow channel through the rotary joint, and the purpose of heating the surface of the roller is achieved in a circulating mode. This way the circulation is achieved by the pump action, increasing the energy consumption. And the heat energy is obviously wasted and dissipated in the circulating process.

SUMMERY OF THE UTILITY MODEL

Not enough to the above among the prior art, the utility model provides a conduction oil convection type even heating roller, its compact structure, convenient operation, the heating is even, convenient popularization.

In order to achieve the above object, the utility model adopts the following technical scheme:

the utility model provides a conduction oil convection type even heating roller, includes roller, outer barrel and interior barrel, the both ends of outer barrel are equipped with the end cover, the roller passes two end cover settings and sets up with the end cover is with the axle center, the cover is equipped with the heating jacket on the roller, interior barrel cover is established in the outside of heating jacket, it forms oil pocket and an end cover and is equipped with hydraulic fluid port and oil pocket intercommunication to leave the space between outer barrel and the interior barrel, be equipped with the end cap on the hydraulic fluid port, outer barrel thread groove on the medial surface of outer barrel, the outside of interior barrel is equipped with interior barrel thread groove.

Preferably, the inner cylinder body and the end covers at two ends are sealed.

Preferably, the inner cylinder is made of carbon fiber or ceramic.

Preferably, the thread groove of the outer cylinder body and the thread groove of the inner cylinder body are arranged in opposite directions.

Preferably, the heat conduction oil is selected from different varieties with different boiling points according to the actual application of the heating roller, the boiling point of the heat conduction oil is more than or equal to 1.2 times (preferably more than 2 times) of the actual use temperature of the heating roller, the heat conduction oil has good fluidity and heat conductivity, the heat conduction oil can be added and discharged through the oil port of the outer cylinder body, the heat conduction oil does not leak in a sealed state, and the heat conduction oil does not gasify or solidify in a qualified use state of the heating roller.

Preferably, when the heat conduction oil is independently added into the oil cavity, in order to avoid the problems of temperature rise expansion of the outer cylinder body or moisture of the heat conduction oil, the axis of the heating roller is vertical, the oil port faces upwards, the heating roller is electrified and heated after being fully added with the heat conduction oil, the temperature of the heating roller reaches the use working temperature, the heating roller is kept for 1-2 hours, the heating roller is sealed under the condition that the heat conduction oil is fully filled, and then the power supply is turned off to cool the heating roller to the room temperature, so that.

The utility model has the advantages that:

the utility model discloses simple structure, convenient to use, the heat conductivity through the conduction oil evenly transmits heat energy to the outer barrel of heating. The heat-conducting oil wraps the electric heating element, is full of the whole oil cavity, is sealed, can completely seal the oil cavity, can prevent air from flowing in or liquid from leaking, and can prevent waste, and the heat-conducting oil can convect under the action of the thread grooves of the inner and outer cylinders along with the rotation of the outer cylinder and the inner cylinder, so that the temperature of the heat-conducting oil is more uniform, the inner cylinder selects carbon fibers or ceramics, and the heat-conducting oil has excellent heat conductivity, and the inner cylinder and the outer cylinder have the same axial lead. When the heating roller rotates to work, the inner cylinder body is provided with an inner cylinder body thread groove, and heat conduction oil can flow under the rotating action. The thread grooves of the inner cylinder and the outer cylinder are reverse, and the convection effect of the heat-conducting oil can be realized. So that the temperature of the heat conducting oil is more uniform.

Drawings

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

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

reference symbol comparison table:

1-roll shaft, 2-outer cylinder, 3-inner cylinder, 4-end cover, 5-heating jacket, 6-oil cavity, 7-plug, 8-outer cylinder thread groove, 9-inner cylinder thread groove.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

In order to make the content of the present invention more clearly understood, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the attached drawings in the embodiment of the present invention.

As shown in fig. 1-2, a conduction oil convection type uniform heating roller comprises a roller shaft 1, an outer barrel 2 and an inner barrel 3, end covers 4 are arranged at two ends of the outer barrel 2, the roller shaft 1 penetrates through the two end covers 4 and is coaxially arranged with the end covers 4, a heating sleeve 5 is sleeved on the roller shaft 1, the outer side of the heating sleeve 5 is sleeved with the inner barrel 3, a gap is reserved between the outer barrel 2 and the inner barrel 3 to form an oil cavity 6, an oil port and an oil cavity 6 are arranged on one end cover 4 and communicated with each other, a plug 7 is arranged on the oil port, an outer barrel thread groove 8 is arranged on the inner side face of the outer barrel 2, and an inner barrel thread groove 9 is arranged on the outer side of the.

The inner cylinder body 3 and the end covers 4 at two ends are sealed.

The inner cylinder 3 is made of carbon fiber or ceramic.

The outer cylinder body thread groove 8 and the inner cylinder body thread groove 9 are arranged in opposite directions.

In the use process of the device, the heat conduction oil selects and uses varieties with different boiling points according to the actual application of the heating roller. The boiling point of the heat conducting oil is more than or equal to 1.2 times (preferably more than 2 times) of the effective use temperature of the heating roller. The heat conducting oil has good fluidity and heat conductivity. The heat conducting oil can be added and discharged through the oil filling sealing plug of the outer cylinder body. The heat conducting oil does not leak in a sealed state, and is not gasified or solidified in a qualified use state of the heating roller.

When the heat conduction oil is independently added to the heating roller, in order to avoid the problems of temperature rise expansion of the outer cylinder body or moisture of the heat conduction oil, the axis of the heating roller is vertical, the oil port faces upwards, after the heat conduction oil is fully added, the heating sleeve is electrified to heat, the temperature of the heating roller reaches the use working temperature, the temperature is kept for 1-2 hours, and sealing is carried out under the condition that the heat conduction oil is fully filled. And then the power supply is turned off to cool to the room temperature, so that the heat conducting oil of the heating roller is added, the oil port is blocked by the plug, the heating roller is installed, and the heat conducting oil can carry out convection under the action of the reverse thread grooves of the inner barrel body and the outer barrel body along with the rotation of the roller. The surface temperature change of the heating roller is realized by adjusting the power of the heating sleeve, the uniform and consistent temperature of each position on the surface of the heating roller can be ensured, the synchronous change can be realized, and the temperature difference of a working area on the surface of the roller can be within 2 ℃. The problem of the inhomogeneous temperature that causes when directly transmitting for the warming mill by the heating jacket is effectively solved and heat energy waste can not be caused.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and all modifications, equivalents, improvements and the like that are made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a conduction oil convection type even heating roller, includes roller (1), outer barrel (2) and interior barrel (3), its characterized in that, the both ends of outer barrel (2) are equipped with end cover (4), roller (1) pass two end cover (4) settings and with end cover (4) with the axle center setting, the cover is equipped with heating jacket (5) on roller (1), the outside at heating jacket (5) is established in interior barrel (3) cover, it forms to leave the space between outer barrel (2) and interior barrel (3) and is equipped with hydraulic fluid port and oil pocket (6) intercommunication on oil pocket (6) and one end cover (4), be equipped with end cap (7) on the hydraulic fluid port, outer barrel thread groove (8) on the medial surface of outer barrel (2), the outside of interior barrel (3) is equipped with interior barrel thread groove (9).

2. A convection-type uniformly heating roller of conduction oil as set forth in claim 1, wherein: the inner cylinder body (3) and the end covers (4) at two ends are sealed.

3. A convection-type uniformly heating roller of conduction oil as set forth in claim 1, wherein: the inner cylinder body (3) is made of carbon fiber or ceramic.

4. A convection-type uniformly heating roller of conduction oil as set forth in claim 1, wherein: the outer cylinder body thread groove (8) and the inner cylinder body thread groove (9) are arranged in opposite directions.