CN111016298A

CN111016298A - Corrugated roller

Info

Publication number: CN111016298A
Application number: CN201911349642.1A
Authority: CN
Inventors: 卢永灿; 卢智炜
Original assignee: Guangzhou Xindafeng Paper Co ltd
Current assignee: Guangzhou Xindafeng Paper Co ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-04-17

Abstract

The invention relates to a corrugating roller which comprises a roller barrel, wherein an inner cavity is arranged in the roller barrel in a hollow manner, a first shaft head is fixed at one end of the roller barrel, an air inlet communicated with the inner cavity is formed in the first shaft head, a first air guide cavity is formed in one end, close to the air inlet, in the roller barrel, the diameter of the first air guide cavity is larger than that of the inner cavity, a partition plate is plugged at one end, close to the air inlet, of the inner cavity, and a siphon communicated with the inner cavity is; a plurality of heat pipes are arranged in the side wall of the roller along the axis direction of the roller, the plurality of heat pipes are arranged along the circumference of the axis of the roller, one end of each heat pipe is communicated with the first air guide cavity, and the other end of each heat pipe is communicated with the inner cavity. Through the setting, compare current mode of letting in the inner chamber with hot steam, reduced the time of heating the comdenstion water to improve production efficiency, and reduced the influence of different medium heat transfer to total coefficient of heat conductivity, made the temperature of roller more be close to the temperature of hot steam, improved thermal utilization ratio.

Description

Corrugated roller

Technical Field

The invention relates to the technical field of corrugated rollers, in particular to a corrugated roller.

Background

At present, corrugated rollers are required to be heated to enable paper boards to form corrugated shapes after passing through, and corrugated rollers in the prior art are generally heated in three modes of electric heating, oil heating and steam heating, wherein the steam heating is generally accepted and used by customers for a long time due to low cost, stable heat source and good safety performance.

As shown in figure 1, hot steam of the prior corrugating roller is introduced into an inner cavity 11 of a roller 1 through a shaft head to transfer heat to a roller body from inside to outside. When the corrugating roller runs, the raw paper and the corrugating roller carry out continuous heat exchange, steam is changed into condensed water after releasing heat, the condensed water is stored in the inner cavity 11 of the roller 1, then the condensed water is continuously discharged through the siphon pipe 2 by steam pressure, and the siphon pipe 2 must keep a certain distance from the inner wall of the corrugating roller due to the structural characteristics, so that the condensed water with a certain height is stored in the inner cavity 11 of the roller 1.

On one hand, the existence of the condensed water hinders the heat transfer efficiency of the steam, so that the corrugating roller cannot have enough stable temperature, and the corrugated shape of the produced paper board is not good; secondly, when the corrugated roller needs to be reheated after shutdown, the time required for steam to heat the whole corrugated roller body to be gradually heated is longer, and the working efficiency is affected.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the corrugated roller which has the effects of improving the heat transfer efficiency between steam and a roller body and enabling the roller body to be heated more uniformly.

In order to achieve the purpose, the invention provides the following technical scheme:

a corrugated roller comprises a roller body, wherein an inner cavity is arranged in the roller body in a hollow mode, a first shaft head is fixed at one end of the roller body, an air inlet communicated with the inner cavity is formed in the first shaft head, a partition plate is plugged at one end, close to the air inlet, of the inner cavity, a first air guide cavity communicated with the air inlet is formed between the partition plate and the first shaft head at intervals, and a siphon communicated with the cavity is inserted in the partition plate in an inserting mode; a plurality of heat conduction pipes are arranged in the side wall of the roller along the axis direction of the roller, the heat conduction pipes are arranged along the circumference of the axis of the roller, one end of each heat conduction pipe is communicated with the corresponding first air guide cavity, and the other end of each heat conduction pipe is communicated with the corresponding inner cavity.

Through the arrangement, the inner cavity of the roller is formed, the air inlet and the inner cavity of the first shaft head are communicated and used for inputting hot steam into the inner cavity, the first shaft head and the steam pipe for pumping the hot steam are communicated through the rotary joint, so that the hot steam is always conveyed into the roller when the roller rotates, and the roller is heated. Wherein hot steam flows into the first air guide cavity after being input from the air inlet, and each heat conduction pipe is communicated with the first air guide cavity, so that the hot steam flows into each heat conduction pipe to heat the side wall of the roller. When the existing hot steam heats the roller, the heat can be transferred to the side wall of the roller only by heating the condensed water in the inner cavity, and the invention directly heats the side wall of the roller through the hot steam, compared with the existing mode of introducing the hot steam into the inner cavity, the invention reduces the time for heating the condensed water, thereby improving the production efficiency, reducing the influence of heat transfer of different media on the total heat conductivity coefficient, leading the temperature of the roller to be closer to the temperature of the hot steam, and improving the utilization rate of the heat. The heat conduction pipe is arranged along the circumference of the axis of the roller, so that the roller is heated more uniformly by hot steam. And the heat pipe is kept away from one end and the inner chamber intercommunication of first air guide chamber, when hot steam continuously lets in the heat pipe, the comdenstion water that hot steam produced in the heat pipe can be continuously blown into in the inner chamber by hot steam to discharge the roller through the siphon under the pressure of steam, wherein siphon and baffle peg graft, when the baffle follows the roller and rotates the relative baffle rotation of siphon.

The invention is further provided with a second air guide cavity arranged at one end of the roller far away from the air inlet, the diameter of the second air guide cavity is larger than that of the inner cavity, the second air guide cavity is communicated with the inner cavity, and one end of the heat conduction pipe far away from the first air guide cavity is communicated with the second air guide cavity.

Through the setting, keep away from the one end of air inlet in the roller and offer the second air guide chamber that communicates with each heat pipe and communicate with the inner chamber to cooperation baffle makes hot steam flow through behind the air inlet and assembles to the inner chamber behind first air guide chamber, heat pipe, the second air guide chamber, and the second air guide chamber can be used for accumulating the comdenstion water, can flow to the inner chamber after making the comdenstion water liquid level reach the inner chamber wall thickness, rethread siphon flows the roller.

The invention further provides that one end of the siphon pipe positioned in the inner cavity is obliquely arranged.

Through the arrangement, when the partition plate rotates along with the roller, the siphon pipe rotates relative to the partition plate, one end of the siphon pipe, which is positioned in the inner cavity, is obliquely arranged, so that the liquid level of condensed water in the inner cavity can be quickly contacted with the water inlet of the siphon pipe, and the condensed water flows out of the siphon pipe under the pressure of hot steam. Thereby reducing the accumulation height of condensed water in the inner cavity and reducing the consumption of the condensed water to the heat of the hot steam.

The invention further provides that the siphon is arranged coaxially with the roller.

Through the arrangement, the siphon pipe and the axis of the roller are coaxially arranged, so that the siphon pipe keeps static relative to the ground when the partition plate rotates along with the roller, and the condensed water in the inner cavity can be continuously drained.

The invention is further provided with the siphon and the clapboard are fixed, and one end of the siphon, which is positioned in the inner cavity, is obliquely arranged and is abutted against the inner wall of the inner cavity.

Through the setting, it is fixed with siphon and baffle, make the siphon follow baffle and roller and rotate to incline to the inner wall butt with the inner chamber with the one end that the siphon is located the inner chamber, thereby make the end of intaking of siphon can not take place the relative slip with the inner wall of inner chamber, thereby when the siphon rotates the comdenstion water contact in water inlet and the inner chamber, make the comdenstion water discharge from the siphon under the pressure of hot steam.

The invention further provides that the roller is provided with a pressure release valve communicated with the second air guide cavity.

Through the setting, the atmospheric pressure of relief valve in the roller can open automatically and carry out the pressure release when too big, makes the atmospheric pressure in the roller keep at certain constant value, reduces because of the atmospheric pressure too big causes the circumstances of damage to the roller, also makes the siphon can steadily export the roller with the comdenstion water, reduces the circumstances of siphon damage because of the unstable siphon that leads to of the air pressure in the roller.

The invention further provides that the roller is provided with a second shaft head, a pressure relief channel communicated with the second air guide cavity is arranged in the second shaft head, and the second shaft head is provided with a pressure relief valve communicated with the pressure relief channel.

Through the setting, the setting of second axle head is convenient for drive roller and is rotated, is provided with the pressure release passageway in the second axle head, installs the relief valve with the pressure release passageway intercommunication at the second axle head, keeps the stability of the atmospheric pressure in the inner chamber through the relief valve, makes the atmospheric pressure in the roller keep at certain constant value, reduces because of the atmospheric pressure too big condition that causes the damage to the roller, also makes the siphon can steadily export the roller with the comdenstion water, reduces the condition that the siphon damaged because of the unstable siphon that leads to of the atmospheric pressure in the roller.

The invention further provides that the pressure release valve is arranged along the periphery circumference of the roller.

Through the arrangement, the pressure release valves are arranged along the periphery circumference of the roller, so that the rotation of the roller is kept relatively stable when each pressure release valve releases pressure, and the influence of the shake of the roller body on the quality of corrugated paper during pressure release of the pressure release valves is reduced.

In conclusion, the invention has the following beneficial effects:

1. the circumference of the side wall of the roller is provided with the heat conduction pipes, and the two ends of the roller are respectively provided with the first air conduction cavity and the second air conduction cavity which are communicated with the heat conduction pipes, so that hot steam flows through the first air conduction cavity, the heat conduction pipes and the second air conduction cavity from the air inlet and then is gathered in the inner cavity, the uniform heating of the side wall of the roller is realized, the temperature of the peripheral surface of the roller is closer to the temperature of the hot steam, and the heat transfer through condensed water is not needed when the roller is heated, the heat loss is reduced, and the time for heating the roller is shortened;

2. a partition plate is fixed at one end of the inner cavity close to the air inlet, and the partition plate is connected with a siphon pipe with an inclined water inlet end, so that condensed water in the inner cavity is discharged from the siphon pipe under the pressure of hot steam;

3. through setting up the relief valve with second air guide chamber intercommunication, make the atmospheric pressure in the roller remain stable to reduce the condition that causes the damage to roller or siphon because of the high pressure.

Drawings

FIG. 1 is a schematic structural diagram of the prior art;

FIG. 2 is a schematic structural view of embodiment 1;

FIG. 3 is a sectional view of example 1;

FIG. 4 is an enlarged view taken at A in FIG. 3;

fig. 5 is a schematic structural view of embodiment 3.

Reference numerals: 1. a roller; 11. an inner cavity; 111. a partition plate; 12. a first spindle nose; 121. an air inlet; 13. a first air conducting cavity; 14. a second air conducting cavity; 15. a second spindle head; 151. a pressure relief channel; 2. a siphon tube; 3. a heat conducting pipe; 31. bending the pipe; 4. a pressure relief valve; 5. a gear; 6. a steam pipe; 7. a rotary joint.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1:

as shown in fig. 2 to 3, the corrugating roller disclosed by the present invention comprises a cylindrical roller 1, wherein a cylindrical first shaft head 12 and a cylindrical second shaft head 15, both of which have a smaller diameter than that of the roller 1, are respectively fixed at two ends of the roller 1 in a protruding manner, and the first shaft head 12 and the second shaft head 15 are both arranged coaxially with the roller 1. Wherein the roller 1 is internally hollow and provided with an inner cavity 11 with a circular cross section, a first air guide cavity 13 and a second air guide cavity 14 are respectively arranged at the positions close to a first shaft head 12 and a second shaft head 15 in the roller 1, the cross sections of the first air guide cavity 13 and the second air guide cavity 14 are circular, and the diameters of the first air guide cavity 13 and the second air guide cavity 14 are both smaller than the diameter of the inner cavity 11.

As shown in fig. 3 to 4, the first spindle head 12 is opened with an air inlet 121 communicated with the first air guide chamber 13, and the air inlet 121 is used for pumping hot steam into the roller 1. One end of the first shaft head 12, which is far away from the first air guide cavity 13, is communicated with the existing steam pipe 6 for pumping hot steam through the existing rotary joint 7, so that the hot steam is always conveyed into the roller 1 through the air inlet 121 when the roller 1 rotates, and the roller 1 is heated. The inner cavity 11 is sealed by a partition 111 at one end close to the air inlet 121, and the first air guide cavity 13 is partitioned by the partition 111, so that the first air guide cavity 13 is positioned between the partition 11 and the air inlet 121. The baffle 111 is inserted with the siphon 2, and the siphon 2 is rotatably connected with the baffle 111 through the existing sealing bearing. The end of the siphon 2 far away from the inner cavity 11 extends out of the rotary joint 7, the end of the siphon 2 located in the inner cavity 11 is obliquely arranged and naturally droops under the action of gravity, and a certain distance is reserved between the end of the siphon 2 located in the inner cavity 11 and the side wall of the inner cavity 11. The siphon tube 2 is inserted into the partition 111 at a position such that the siphon tube 2 is coaxially arranged with the drum 1, so that the position of the siphon tube 2 is maintained while the partition 111 rotates following the drum 1.

A plurality of heat conduction pipes 3 are arranged in the side wall of the roller 1 along the axial direction of the roller 1, the heat conduction pipes 3 are arranged along the axial equiangular circumference of the roller 1, two ends of each heat conduction pipe 3 are respectively communicated with a first air conduction cavity 13 and a second air conduction cavity 14, and the second air conduction cavity 14 is communicated with the inner cavity 11. The two ends of each heat conduction pipe 3 are respectively provided with an elbow 31 facing the central axis of the first heat conduction cavity 13 or the second heat conduction cavity 14, and the diameters and the spaces of the first air conduction cavity 13 and the second air conduction cavity 14 are shortened through the arrangement of the elbows 31, so that the pressure of water vapor in the first air conduction cavity 13 and the second air conduction cavity 14 is higher, and the water vapor is convenient to enter the heat conduction pipes 3 and the inner cavity 11.

Wherein the second shaft head 15 is used for sleeving the gear 5, and the roller 1 is driven to coaxially follow the gear 5 by driving the gear 5 to rotate. A pressure relief channel 151 communicated with the second air guide cavity 14 is arranged in the second spindle head 15, a pressure relief valve 4 communicated with the pressure relief channel 151 is installed on the second spindle head 15, the air pressure in the roller 1 is kept stable through the pressure relief valve 4, and the pressure relief valve 4 is arranged at the axis position of the second spindle head 15.

The implementation principle of the embodiment is as follows:

when the corrugated roller is used, the gear 5 sleeved with the second shaft head 15 is driven to rotate so as to drive the roller 1 to rotate, and corrugated paper is rolled through the roller 1. Wherein, the roller 1 needs to be heated before the corrugated roller is used, so that the roller 1 can be rolled only after reaching a certain stability. Input steam in to roller 1 through steam pipe 6, each heat pipe 3 is inputed simultaneously in assembling of steam in first air guide cavity 13, heat the lateral wall of roller 1 behind the steam circulation heat pipe 3, steam continues to flow and assembles and remove in inner chamber 11 to second air guide cavity 14, steam begins the condensation to form the comdenstion water this moment, the comdenstion water assembles in second air guide cavity 14 or in inner chamber 11, when the liquid level of comdenstion water reaches the tip butt that is arranged in inner chamber 11 with siphon 2, steam's atmospheric pressure is pressed out the comdenstion water from siphon 2, realize the discharge comdenstion water.

When the air pressure in the roller 1 is too high, the pressure release valve 4 is automatically opened to release the pressure, so that the air pressure in the roller 1 keeps a relative constant value, and the air pressure in the roller 1 is greater than the atmospheric pressure, thereby improving the boiling point of hot steam and keeping the hot steam at a higher temperature to heat the roller 1.

Through the setting of heat pipe 3, make hot steam directly heat the lateral wall of roller 1, and need not heat the comdenstion water earlier to higher temperature and then make roller 1's temperature on to the thermal loss and the condition that heat conduction efficiency reduces when different medium heat transfer have been reduced. And when the hot steam is condensed in heat conduction pipes 3, because the diameter of heat conduction pipes 3 is relatively small, the hot steam is continuously fed into heat conduction pipes 3 to discharge the condensed water in heat conduction pipes 3 to second air guide chamber 14, and the influence of the condensed water on hot steam heating roller 1 is reduced.

Example 2:

the present embodiment is different from embodiment 1 in that the siphon tube 2 is fixed to the partition 111, and one end of the siphon tube 2 located in the chamber 11 is inclined to a state of abutting against the side wall of the chamber 11, so that when the partition 111 rotates following the roller 1, the siphon tube 2 rotates coaxially with the partition 111 and the roller 1. Thereby shortened the distance between siphon 2 and the lateral wall of inner chamber 11, and then reduced the volume of the comdenstion water that accumulates in roller 1, further reduced the influence of comdenstion water to heating roller 1, also reduced the comdenstion water and made roller 1 receive the uneven condition that warp that is heated.

Example 3:

as shown in fig. 5, the difference between this embodiment and embodiment 1 is that the end of the roller 1 far from the first spindle head 12 is not provided with the second spindle head 15, and the end of the roller 1 far from the first spindle head 12 is connected with the output end of the motor, so that the roller 1 and the output end of the motor rotate coaxially. A plurality of pressure release valves 4 communicated with the second air guide cavity 14 are arranged on the peripheral surface of the roller 1, and each pressure release valve 4 is circumferentially arranged along the axis of the roller 1 at equal angles. Therefore, when the pressure in the roller 1 is too high to open the pressure release valves 4 for pressure release, the pressure release valves 4 uniformly release pressure, and the condition that the corrugated paper quality is influenced by vibration caused by the high-speed pressure release of the pressure release valves 4 on the roller 1 is reduced.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. The utility model provides a corrugating roller, includes roller (1), cavity is provided with inner chamber (11) in roller (1), the one end of roller (1) is fixed with first spindle nose (12), first spindle nose (12) seted up with air inlet (121) of inner chamber (11) intercommunication, characterized by: a partition plate (111) is plugged at one end, close to the air inlet (121), of the inner cavity (11), a first air guide cavity (13) communicated with the air inlet (121) is formed between the partition plate (111) and the first shaft head (12) at an interval, and a siphon (2) communicated with the cavity is inserted into the partition plate (111); a plurality of heat pipes (3) are arranged in the side wall of the roller (1) along the axis direction of the roller (1), the heat pipes (3) are arranged along the circumference of the axis of the roller (1), one ends of the heat pipes (3) are communicated with the first air guide cavity (13), and the other ends of the heat pipes are communicated with the inner cavity (11).

2. The corrugating roll as claimed in claim 1, wherein: a second air guide cavity (14) is formed in one end, far away from the air inlet (121), of the roller (1), the diameter of the second air guide cavity (14) is smaller than that of the inner cavity (11), the second air guide cavity (14) is communicated with the inner cavity (11), and one end, far away from the first air guide cavity (13), of the heat conduction pipe (3) is communicated with the second air guide cavity (14).

3. The corrugating roll as claimed in claim 1, wherein: one end of the siphon (2) positioned in the inner cavity (11) is obliquely arranged.

4. The corrugating roll as claimed in claim 1, wherein: the siphon (2) and the partition plate are coaxially arranged on the roller (1).

5. The corrugating roll as claimed in claim 4, wherein: the siphon (2) is fixed with the partition plate (111), and one end of the siphon (2) located in the inner cavity (11) is obliquely arranged and is abutted against the inner wall of the inner cavity (11).

6. The corrugating roll as claimed in claim 2, wherein: and the roller (1) is provided with a pressure release valve (4) communicated with the second air guide cavity (14).

7. The corrugating roll as claimed in claim 2, wherein: second axle head (15) is installed in roller (1), be provided with in second axle head (15) with pressure release channel (151) of second air guide chamber (14) intercommunication, second axle head (15) install with pressure release valve (4) of pressure release channel (151) intercommunication.

8. The corrugating roll as claimed in claim 6, wherein: the pressure release valve (4) is arranged along the periphery circumference of the roller (1).