CN216640091U - Thermal calender roll for paper machine calender - Google Patents

Abstract

The utility model provides a hot-press smooth roll for a paper machine calender, which comprises an oil inlet pipe, a calender roll main body and a driving shaft, wherein one end of the oil inlet pipe is connected with a rotary joint, the other end of the rotary joint is connected with a stabilizing shaft, the stabilizing shaft and the driving shaft are respectively connected with two ends of the calender roll main body, a fixed shaft seat is arranged on the stabilizing shaft, a first sealing element is arranged between the fixed shaft seat and the calender roll main body, heat insulation layers are arranged on two end surfaces of the calender roll main body, a heat conducting and pressing light layer is arranged on the roll surface of the calender roll main body, a shaft sleeve is arranged on the driving shaft, a second sealing element is arranged between the shaft sleeve and the calender roll main body, and a gear is arranged on the driving shaft. The utility model solves the problems that the heat transfer effect to the surface press roll edge is poor because only a single oil way is arranged in the heat press roll for the existing press roll, and a heat preservation space cannot be formed in the press roll, thereby causing a large amount of heat loss and increasing the energy consumption of equipment.

Description

Thermal calender roll for paper machine calender

Technical Field

The utility model relates to a thermal calender roll for a paper machine calender, belonging to the technical field of paper making process.

Background

In the paper making process flow, the hot press polishing treatment of the paper sheets is a new technology appearing in recent years, compared with the cold press polishing treatment, the smooth surface and the thickness of the hot press polishing treatment paper sheets are more ideal, the efficiency is higher, a hot press polishing roller is a main part of the hot press polishing treatment paper sheets, a medium for conducting heat energy mainly comprises steam or heat conducting oil, the way for conducting heat energy is a roller inner cavity or a plurality of heat conducting holes processed on a roller, the heat is conducted to the outer surface of the roller from the inside through a roller wall thickness section and then conducted to the paper sheets continuously subjected to the press polishing treatment, so that the paper sheets are subjected to the press polishing treatment in a heated expansion state, in the process, the heat conductivity is an important technical index, and the effect of the hot press polishing treatment of the paper sheets is good under the index of high heat conductivity. However, the existing thermal calender has only a single oil passage inside the thermal calender roll and is disposed through the axis of the calender roll, which results in poor heat transfer effect of oil temperature to the outside press roll edge and accompanying large heat loss, and secondly, a heat-insulating space cannot be formed inside the calender roll, which results in that partial heat of the thermal oil passing through the calender roll is absorbed by the inside of the calender roll, the heat efficiency of the heat transfer to the surface of the calender roll is reduced, and further, the requirement of maintaining high thermal oil flow rate and temperature is caused, and the energy consumption of equipment is increased.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the thermal calender roll for the paper machine calender is provided so as to solve the problems that the thermal calender roll for the existing calender roll only has a single oil way inside, the heat transfer effect to the surface press roll edge is poor, and a heat insulation space cannot be formed inside the calender roll, so that a large amount of heat loss and the energy consumption of equipment are increased.

In order to achieve the above object, there is provided a thermal calender roll for a paper machine calender, comprising: the oil feeding device comprises an oil feeding pipe, a calender roll main body and a driving shaft, wherein one end of the oil feeding pipe is connected with a rotary joint, the other end of the rotary joint is connected with a stabilizing shaft, the stabilizing shaft and the driving shaft are respectively connected to two ends of the calender roll main body, a fixed shaft seat is arranged on the stabilizing shaft, a first sealing element is arranged between the fixed shaft seat and the calender roll main body, heat insulation layers are arranged on two end surfaces of the calender roll main body, a heat conducting layer is arranged on the roll surface of the calender roll main body, a shaft sleeve is arranged on the driving shaft, a second sealing element is arranged between the shaft sleeve and the calender roll main body, and a gear is arranged on the driving shaft.

Further, an oil inlet main passage is formed in the stabilizing shaft and communicated with an oil inlet pipe, and the oil inlet main passage extends into the calender roll main body; an oil return main passage is arranged in the driving shaft and extends into the calender roll main body; the oil inlet main passage and the oil return main passage are connected through a pipeline.

Furthermore, an oil inlet branch passage is arranged in the calender roll main body, the oil inlet branch passage is connected with the end part of the oil inlet main passage extending into the calender roll main body, and a one-way valve is arranged in the oil inlet main passage; the oil return main passage is connected with an oil return branch passage, and a throttle valve is arranged in the oil return main passage.

Furthermore, a heat storage cavity is axially formed in the calender roll main body, one end of the heat storage cavity is connected with the oil inlet main passage, and the other end of the heat storage cavity is connected with the oil return main passage.

Furthermore, a curved oil duct annularly arranged around the axis of the calender roll main body is arranged on the outer side of the heat storage cavity, one end of the curved oil duct is communicated with the oil inlet branch passage, and the other end of the curved oil duct is communicated with the oil return branch passage.

The utility model has the beneficial effects that: hot oil enters the heat storage cavity and the curved oil duct through the oil inlet main duct and the oil inlet branch duct and passes through the curved oil duct which is annularly arranged, the oil temperature is quickly dispersed to the surface heat-conducting calendaring layer of the calendaring roller main body, the heat transfer distance is shortened, the heat loss is reduced, and forms a circulation loop with the heat storage cavity and the curved oil duct through the oil return branch passage and the oil return main passage, thereby enabling hot oil to continuously flow through the interior of the calender roll main body, utilizing the heat storage cavity to enable a part of the hot oil to be positioned in the cavity, and the one-way valve and the throttle valve at the two ends of the heat storage cavity are utilized to ensure that the hot oil in the cavity slowly flows to the oil return main passage, and then make inside the calender roll main part play the heat-retaining effect, keep the calender roll main part in the constant temperature state, form heat preservation space, reduce the heat that absorbs hot oil that flows in the curved oil duct, improve heat transfer efficiency, reduced the energy consumption.

Drawings

FIG. 1 is a schematic view showing an internal structure of a calender roll body according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the structure at A in FIG. 1 according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of the structure at B in FIG. 1 according to an embodiment of the present invention;

FIG. 4 is a side view partially schematic view of a calender roll body according to an embodiment of the present invention.

In the figure: 1. an oil inlet pipe; 2. a rotary joint; 3. fixing the shaft seat; 4. a first seal member; 5. a thermal insulation layer; 6. a thermally conductive optical layer; 7. a curved oil passage; 8. a calender roll main body; 9. a heat storage cavity; 10. an oil return main passage; 11. a drive shaft; 12. a gear; 13. a shaft sleeve; 14. a second seal member; 15. an oil inlet main passage; 16. a stabilizing shaft; 17. a throttle valve; 18. dividing the return oil; 19. a one-way valve; 20. and (4) taking oil into a branch channel.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The utility model is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.

The thermal calender roll for a machine calender shown with reference to fig. 1 to 4 comprises: the device comprises an oil inlet pipe 1, a heat insulation layer 5, a heat conduction calendaring layer 6, a curved oil duct 7, a calendaring roller main body 8, a heat storage cavity 9, an oil return main duct 10 and an oil inlet main duct 15; the left end of an oil inlet pipe 1 is connected with a rotary joint 2, the left end of the rotary joint 2 is connected with a stabilizing shaft 16, the outer side of the stabilizing shaft 16 is provided with a fixed shaft seat 3, the left end of the fixed shaft seat 3 is provided with a first sealing element 4, the left end of the first sealing element 4 is connected with a calender roll main body 8, the two ends of the calender roll main body 8 are provided with heat insulation layers 5, the surface of the calender roll main body 8 is provided with a heat conduction and compression light layer 6, the left end of the calender roll main body 8 is provided with a second sealing element 14, the left end of the second sealing element 14 is provided with a shaft sleeve 13, the inside of the shaft sleeve 13 is provided with a driving shaft 11, the left end of the calender roll main body 8 is fixedly connected with the driving shaft, and the outer side of the driving shaft 11 is provided with a gear 12.

As a preferred embodiment, the rotary joint 2 functions as a rotary connection between the oil inlet pipe 1 and the stabilizing shaft 16; the fixed shaft seat 3 is convenient for fixing the stable shaft 16; the heat conductive and light pressing layer 6 has a smooth surface and is in contact with the paper surface.

In the present exemplary embodiment, the sleeve 13 and the second seal 14 serve as a stable sealing connection to the drive shaft 11, the drive shaft 11 being in driving connection with an external drive via the gear wheel 12.

An oil inlet main passage 15 is formed in the stabilizing shaft 16, the oil inlet main passage 15 is communicated with the oil inlet pipe 1, and the oil inlet main passage 15 extends into the calender roll main body 8.

As a preferred embodiment, hot oil is fed to the interior of the calender roll body 8 through an oil feed manifold 15.

An oil inlet branch passage 20 is arranged inside the right end of the calender roll main body 8, the oil inlet branch passage 20 is connected with the end part of the oil inlet main passage 15, and a one-way valve 19 is arranged inside the oil inlet main passage 15.

In a preferred embodiment, the oil inlet branch passage 20 is used for distributing hot oil to the inside of each curved oil passage 7, and the check valve 19 is used for preventing the hot oil in the heat storage cavity 9 from flowing back under the resistance of the throttle valve 17.

The inside of calender roll main part 8 has seted up heat-retaining chamber 9 to the axial, and the right-hand member and the oil feed of heat-retaining chamber 9 are connected way 15 to be provided with curved oil duct 7 around calender roll main part 8 axle center annular arrangement in the outside of heat-retaining chamber 9.

As a preferred embodiment, the hot oil rapidly transfers heat over a large area by means of curved oil channels 7 arranged annularly around the axis of the calender roll body 8.

An oil return main passage 10 is formed in the driving shaft 11, the oil return main passage 10 extends into the calender roll main body 8 and is communicated with the left end of the heat storage cavity 9, an oil return branch passage 18 is connected to the outer side of the oil return main passage 10, and a throttle valve 17 is arranged in the oil return main passage 10.

In a preferred embodiment, the throttle 17 throttles the hot oil inside the heat storage chamber 9 slowly so that a thermal insulation space is formed inside the heat storage chamber 9.

The right end of the curved oil duct 7 is communicated with the oil inlet branch duct 20, and the left end of the curved oil duct 7 is communicated with the oil return branch duct 18.

The thermal calender roll for the paper machine calender can effectively solve the problems that the prior thermal calender roll for the paper machine calender roll has only a single oil circuit inside, has poor heat transfer effect to the edge of a surface press roll, cannot form a heat preservation space inside the calender roll, and causes large heat loss and increase of equipment energy consumption, hot oil enters a heat storage cavity and a curved oil duct through an oil inlet main duct and an oil inlet branch duct, and is rapidly dispersed to a surface heat conduction calender layer of a calender roll main body through the curved oil duct which is annularly arranged, so that the heat transfer distance is shortened, the heat loss is reduced, a circulation loop is formed by the oil return branch duct and the oil return main duct together with the heat storage cavity and the curved oil duct, the hot oil continuously flows through the interior of the calender roll main body, a part of the hot oil is positioned in the cavity by the heat storage cavity, and check valves and throttle valves at two ends of the heat storage cavity are utilized, the hot oil in the cavity slowly flows to the oil return main passage, so that the heat storage effect is achieved in the calender roll main body, the calender roll main body is kept in a constant temperature state, a heat insulation space is formed, the heat of the hot oil flowing in the curved oil passage is reduced, the heat transfer efficiency is improved, and the energy consumption is reduced.

Claims (5)

1. The utility model provides a hot calender roll for paper machine calender, includes into oil pipe (1), calender roll main part (8), drive shaft (11), its characterized in that: one end of the oil inlet pipe (1) is connected with the rotary joint (2), the other end of the rotary joint (2) is connected with the stabilizing shaft (16), the stabilizing shaft (16) and the driving shaft (11) are respectively connected with two ends of the calender roll main body (8), the stabilizing shaft (16) is provided with the fixed shaft seat (3), a first sealing element (4) is arranged between the fixed shaft seat (3) and the calender roll main body (8), two end faces of the calender roll main body (8) are provided with the heat insulation layer (5), the roll surface of the calender roll main body (8) is provided with the heat conduction light compression layer (6), the driving shaft (11) is provided with the shaft sleeve (13), a second sealing element (14) is arranged between the shaft sleeve (13) and the calender roll main body (8), and the driving shaft (11) is provided with the gear (12).

2. A thermal calender roll for a machine calender according to claim 1, characterised in that: an oil inlet main passage (15) is formed in the stabilizing shaft (16), the oil inlet main passage (15) is communicated with the oil inlet pipe (1), and the oil inlet main passage (15) extends into the calender roll main body (8); an oil return main passage (10) is formed in the driving shaft (11), and the oil return main passage (10) extends into the calender roll main body (8); the oil inlet main passage (15) is connected with the oil return main passage (10) through a pipeline.

3. A thermal calender roll for a machine calender according to claim 2, characterised in that: an oil inlet branch passage (20) is arranged in the calender roll main body (8), the oil inlet branch passage (20) is connected with the end part of the oil inlet main passage (15) extending into the calender roll main body (8), and a check valve (19) is arranged in the oil inlet main passage (15); an oil return branch passage (18) is connected to the oil return main passage (10), and a throttle valve (17) is arranged in the oil return main passage (10).

4. A thermal calender roll for a machine calender according to claim 3, characterised in that: the inside of calender roll main part (8) has seted up heat storage chamber (9) axially, and the one end and the oil feed of heat storage chamber (9) are connected way (15), and the heat storage chamber (9) other end is connected with oil return way (10).

5. A thermal calender roll for a machine calender according to claim 4, characterised in that: and a curved oil duct (7) annularly arranged around the axis of the calender roll main body (8) is arranged on the outer side of the heat storage cavity (9), one end of the curved oil duct (7) is communicated with the oil inlet branch duct (20), and the other end of the curved oil duct is communicated with the oil return branch duct (18).

Images