CN104404732B - A kind of inner bag of non-maintaining oil heating roller - Google Patents

Abstract

A liner for maintenance-free oil heating rollers. The outer surface of the main body of the liner is provided with a heat balance mechanism, and an oil inlet chamber and an oil outlet chamber are arranged near the two end plates in the inner bag. The oil hole on the inner tank wall communicates with the heating chamber, several temperature compensation oil pipes are arranged in the middle section between the oil inlet chamber and the oil outlet chamber, and the two ends of the main body of the inner tank are connected with oil inlet and outlet pipes. The oil pipes are equipped with heat-insulating bushings, and a wind-cooled air chamber is arranged between the heat-insulating bushings and the inner walls of the oil inlet and outlet pipes. Blow the air into the air cavity through the blower pipe to take away the hot air to achieve air cooling. The invention realizes the uniform heating of the roller shell through the heat balance mechanism and the temperature compensation oil pipe arranged on the outer surface of the inner tank, which ensures the rapid temperature rise of the roller body and keeps the temperature of the roller surface uniform; The heating roller head can effectively insulate and dissipate heat, reduce the damage of the seal, and ensure the service life of the bearings at both ends of the heating roller head.

Description

Liner of a maintenance-free oil heating roller

technical field

The invention relates to an oil heating roller of textile machinery equipment, in particular to an inner container of a maintenance-free oil heating roller.

Background technique

The ironing rolls on the market today are basically electric heating rolls, and the oil heating rolls all use indirect heat transfer, the energy utilization rate is low, the temperature of the roll surface cannot meet the use requirements, and the oil outlet pressure of the boiler room and The oil outlet temperature has very high requirements.

Contents of the invention

The technical problem to be solved by the present invention is to propose an efficient and safe maintenance-free inner container for oil heating rollers in view of the deficiencies in the prior art.

The technical problem to be solved by the present invention is achieved through the following technical proposals. A liner for a maintenance-free oil heating roller includes a main body of the liner, oil inlet pipes and oil outlet pipes are arranged at both ends of the main body of the liner, and the main body of the liner The annular cavity between the outer surface of the heating roller and the roller shell of the heating roller is a heating chamber through which the heat transfer oil flows. Its characteristics are: the outer surface of the main body of the inner tank is provided with a heat balance mechanism, and the two ends of the main body of the inner tank are provided with end plates. , a dynamic sealing structure is formed between the outer edge of the end plate and the inner surface of the roller shell, and two chambers are respectively arranged near the two end plates in the inner tank, one chamber is the oil inlet chamber, and the other chamber is the oil outlet chamber chamber, the oil inlet and outlet chambers communicate with the heating chamber through the oil holes on the inner tank wall, and several temperature compensation oil pipes are arranged in the middle section between the oil inlet chamber and the oil outlet chamber. One end of the temperature compensation oil pipe communicates with the oil inlet chamber, and the other end of the temperature compensation oil pipe communicates with the temperature compensation oil hole on the inner tank wall. The temperature compensation oil hole is set near the oil outlet chamber, and the oil inlet pipe passes through the end plate and The oil inlet chamber communicates with each other, and the oil outlet pipe passes through the end plate to communicate with the oil outlet chamber. There are heat-insulating bushings in the inlet and outlet pipes, and air cooling is provided between the heat-insulation bushings and the inner walls of the oil inlet and outlet pipes. air cavity. Blow the air into the air cavity through the blower pipe to take away the hot air to achieve air cooling.

The technical problem to be solved by the present invention can be further realized through the following technical solutions. The heat balance mechanism is a spiral fin arranged on the outer surface of the main body of the inner tank.

The technical problem to be solved by the present invention can be further realized through the following technical solutions, the spiral fins include left-handed fins and right-handed fins, and the outer surface of the inner tank body corresponding to the oil outlet chamber is provided with right-handed fins The outer surface of the inner tank body corresponding to the middle section and the oil inlet chamber is provided with left-handed fins.

The technical problem to be solved by the present invention can be further realized by the following technical solution, the length ratio of the right-handed fins and left-handed fins along the length direction of the liner axis is 1:9.

The technical problem to be solved by the present invention can be further realized through the following technical proposals. The outer walls of the oil inlet and outlet pipes are provided with heat insulation mechanisms.

The technical problem to be solved by the present invention can be further realized by the following technical solutions, the heat insulation mechanism is a felt heat insulation layer, a wound carbon fiber heat insulation layer or a vacuum heat insulation layer.

The technical problem to be solved by the present invention can be further realized by the following technical solution, the outer surface of the heat insulation bushing is covered with a heat insulation layer.

The technical problem to be solved by the present invention can be further realized by the following technical solutions, the heat insulation layer is a felt heat insulation layer or a wound carbon fiber heat insulation layer.

Compared with the prior art, the present invention realizes the uniform heating of the roller shell through the heat balance mechanism and the temperature compensation oil pipe arranged on the outer surface of the inner tank, which ensures the rapid temperature rise of the roller body and keeps the temperature of the roller surface uniform; The heat insulation measures of the outer wall can effectively insulate and dissipate heat from the heating roller head, reduce the damage of the seal, thereby ensuring the service life of the bearings at both ends of the heating roller head.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the present invention.

detailed description

A liner for a maintenance-free oil heating roller, comprising a liner main body 5, an oil inlet pipe 2 and an oil outlet pipe 12 are arranged at both ends of the liner main body 5, and the outer surface of the liner main body 5 and the roller shell of the heating roller The annular cavity is the heating chamber through which the heat transfer oil flows. The outer surface of the inner tank main body 5 is provided with a heat balance mechanism, and the two ends of the inner tank main body are provided with end plates 4. The outer edge of the end plate 4 and the inner surface of the roller shell A dynamic sealing structure is formed between them, and two chambers are respectively provided near the two end plates in the liner, one chamber is the oil inlet chamber 6, and the other chamber is the oil outlet chamber 9, both the inlet and outlet chambers are set through the The oil hole on the inner tank wall communicates with the heating chamber, and several temperature compensation oil pipes 7 are arranged in the middle section between the oil inlet chamber and the oil outlet chamber, and one end of the temperature compensation oil pipe 7 communicates with the oil inlet chamber 6 , the other end of the temperature compensation oil pipe 7 communicates with the temperature compensation oil hole arranged on the inner tank wall, the temperature compensation oil hole is set near the side of the oil outlet chamber 9, and the oil inlet pipe 2 passes through the end plate and the oil inlet chamber 6 In communication, the oil outlet pipe 12 communicates with the oil outlet chamber 9 through the end plate, and a heat-insulating bushing 1 is arranged in the oil inlet and outlet pipes, and an air vent is arranged between the heat-insulation bushing 1 and the inner wall of the oil inlet and outlet pipes. Cooling air cavity 3. Blowing is blown into the air cavity through the blowing pipe 13, and the hot air is taken away to realize air cooling. Be provided with the blowing pipe 13 that stretches into wind cooling air cavity by hot blast outlet. Blowpipe 13 preferably stretches into the 1/2～2/3 place of wind-cooling air cavity from outside to inside. The blower blows compressed air.

The heat balance mechanism is a spiral fin arranged on the outer surface of the main body of the inner tank. The spiral fins include left-handed fins 8 and right-handed fins 11, the outer surface of the inner tank body corresponding to the oil outlet chamber is provided with right-handed fins 11, and the inner tank body corresponding to the middle section and the oil inlet chamber Left-handed fins 8 are arranged on the outer surface. The height of the right-handed fins and left-handed fins is 8-15, and the length ratio of the right-handed fins and left-handed fins along the length direction of the liner axis is 1:9. The left-handed helical fins enable the heat transfer oil to flow smoothly through the surface of the inner tank, and the right-handed helical fins reduce the pressure at the oil outlet end and reduce the pressure of the seal. At the same time, the heat-conducting oil can be introduced from the surface of the inner tank near the oil outlet chamber of the temperature compensation oil pipe, so as to promote the uniform temperature of the entire inner tank surface and ensure the uniform temperature of the outer surface of the roll shell.

The outer walls of the oil inlet and outlet pipes are equipped with heat insulation mechanisms. The heat insulation mechanism is a felt heat insulation layer, a wound carbon fiber heat insulation layer or a vacuum heat insulation layer.

The outer surface of the heat insulation bushing is covered with a heat insulation layer. The heat insulation layer is a felt heat insulation layer or a wound carbon fiber heat insulation layer.

Claims (8)

1. A liner for maintenance-free oil heating rollers, including a main body of the liner, oil inlet pipes and oil outlet pipes are arranged at both ends of the main body of the liner, and the ring between the outer surface of the main body of the liner and the roller shell of the heating roller The cavity is a heating chamber through which the heat-conducting oil flows. It is characterized in that: the outer surface of the main body of the inner tank is provided with a heat balance mechanism, the two ends of the main body of the inner tank are provided with end plates, and the outer edge of the end plate is formed between the inner surface of the roller shell. Dynamic sealing structure, there are two chambers in the main body of the liner near the two end plates, one chamber is the oil inlet chamber, the other chamber is the oil outlet chamber, both the inlet and outlet chambers are set through the inner tank The oil hole on the wall communicates with the heating chamber, and several temperature compensation oil pipes are arranged in the middle section between the oil inlet chamber and the oil outlet chamber. One end of the temperature compensation oil pipe communicates with the oil inlet chamber, and the other end of the temperature compensation oil pipe One end communicates with the temperature compensation oil hole on the main wall of the inner tank, the temperature compensation oil hole is set on the side close to the oil outlet chamber, the oil inlet pipe passes through the end plate and communicates with the oil inlet chamber, and the oil outlet pipe passes through the end plate and communicates with the oil inlet chamber. The oil outlet chambers are connected, and heat-insulating bushings are provided in the inlet and outlet pipes, and a wind-cooled air chamber is provided between the heat-insulation bushings and the inner walls of the oil inlet and outlet pipes, and blowing air is blown into the air chamber through the blower pipe. Take the hot air away to achieve air cooling. 2. The inner container of maintenance-free oil heating roller according to claim 1, characterized in that: the heat balance mechanism is a spiral fin arranged on the outer surface of the inner container. 3. The liner of maintenance-free oil heating roller according to claim 2, characterized in that: said helical fins include left-handed fins and right-handed fins, and the outer surface of the main body of the liner corresponding to the oil outlet chamber is set Right-handed fins are used, and left-handed fins are arranged on the outer surface of the inner tank body corresponding to the middle section and the oil inlet chamber. 4. The liner of maintenance-free oil heating roller according to claim 3, characterized in that: the length ratio of the right-handed fins and left-handed fins along the length direction of the inner liner axis is 1:9. 5. The liner of the maintenance-free oil heating roller according to claim 1, characterized in that heat insulation mechanisms are provided on the outer walls of the oil inlet and outlet pipes. 6. The liner of the maintenance-free oil heating roller according to claim 5, characterized in that: the heat insulation mechanism is a felt heat insulation layer, a wound carbon fiber heat insulation layer or a vacuum heat insulation layer. 7. The liner of maintenance-free oil heating roller according to claim 1, characterized in that: the outer surface of the heat-insulation bushing is covered with a heat-insulation layer. 8. The liner of maintenance-free oil heating roller according to claim 7, characterized in that: the heat insulation layer is a felt heat insulation layer or a wound carbon fiber heat insulation layer.