Energy-saving paper machine drying cylinder

Abstract

The utility model discloses an energy-saving paper machine drying cylinder which comprises a cylinder body and cylinder covers arranged at the two ends of the cylinder body, shaft heads are arranged on the cylinder covers, the cylinder body is rotationally connected to a rack through the shaft heads, a synchronous wheel is arranged on the shaft head at one end of the cylinder body, and the synchronous wheel is connected with a driving motor through a synchronous belt so as to drive the cylinder body to rotate on the rack. Shaft heads on the cylinder cover are hollow, a drain pipe is arranged at one end of the cylinder body, a water pump is arranged on the drain pipe, an air inlet pipe is arranged at the other end of the cylinder body, the air inlet pipe and the drain pipe are connected to the shaft heads at the two ends of the cylinder body through sealing bearings respectively, and turbulent flow strips are connected to the inner wall of the cylinder body and arranged in the circumferential direction of the cylinder body. The drying cylinder has the advantages that when the cylinder body rotates, a water film is prevented from being formed on the inner wall of the cylinder body, the heat conduction efficiency between steam and the drying cylinder is improved, water generated in the cylinder body can be conveniently discharged in time, the steam enters the cylinder body through the air inlet pipe to directly heat the inner wall of the cylinder body, and the surface of the cylinder body can rapidly reach the needed temperature.

Description

TECHNICAL FIELD

[0001] The utility model relates to papermaking machinery equipment technical field more specifically, it relates to a kind of energy-saving paper machine drying cylinder. BACKGROUND

[0002] Paper machine drying cylinder is the key equipment in paper machine, it is applied to papermaking industry paper machine drying part, its main role is to use steam heat energy to dry the moisture in paper, so that it reaches the dryness required, drying cylinder generally includes cylinder body, cylinder cover and axle head, cylinder body is rotatably connected on the frame by axle head to facilitate external power piece to drive cylinder body to rotate on the frame, when working, saturated steam from steam connector enters the inside of cylinder body, steam condenses in the inside of cylinder body, releases a large amount of heat, so that the temperature of cylinder body rises, after cylinder body surface is heated, heat is transferred to the paper in contact with the surface of drying cylinder by the mode of heat conduction, paper is running in the surface of cylinder body, is affected by heat, the moisture in paper gradually evaporates, along with the continuous evaporation of moisture, the moisture in paper gradually reduces, reaches the purpose of dry paper.

[0003] The utility model discloses a kind of energy-saving environment-friendly paper machine drying cylinders of application No. 202122610330.0, including cylinder body, cylinder body is equipped with cylinder cover, cylinder cover is fixedly installed on cylinder body by screw, cylinder body, cylinder cover are equipped with inlet pipe;Cylinder body itself is equipped with interlayer, cylinder body is equipped with multiple gas inlets in the inside along the circumference and interlayer communication;Vacuum layer is located in cylinder cover;Steam inlet is located at one end of inlet pipe, baffle is located in inlet pipe, multiple gas branch pipes are located on inlet pipe, inlet pipe is also equipped with water suction pipe extending to the bottom of interlayer, the other end of inlet pipe is connected with drain pipe by swivel joint, drain pump is located on drain pipe.

[0004] According to the above technical scheme, by setting the water suction pipe extending to the bottom of interlayer on the inlet pipe, the other end of the inlet pipe is connected with the drain pipe by the swivel joint, and the drain pump is arranged on the drain pipe, which can timely discharge the water generated in the cylinder body, effectively prevent the water generated by the condensation of steam in the cylinder body from absorbing the heat of the steam, and by arranging the vacuum layer in the cylinder cover, the sealing grooves corresponding to each other are arranged on the cylinder body and the cylinder cover, and the sealing ring made of rubber material is arranged in the sealing groove, which effectively prevents the heat loss of the steam in the cylinder body. But because cylinder body rotates, the water generated in the cylinder body is easy to form a water film along the inner wall of the interlayer under the action of centrifugal force, which reduces the heat transfer efficiency between the steam and the drying cylinder. The condensate water film also makes it difficult for the water generated in the cylinder body to be discharged in time through the water suction pipe, and because the steam can only enter the interlayer through the inlet hole to heat the surface of the cylinder body, the amount of steam entering the interlayer is small, which makes the surface of the cylinder body cannot quickly reach the required temperature. UTILITY MODEL CONTENTS

[0005] The utility model discloses an energy -conserving paper machine drying cylinder aiming at the deficiency of prior art.

[0006] To realize above -mentioned purpose, the utility model provides the following technical scheme:

[0007] An energy -conserving paper machine drying cylinder, including cylinder body and the cylinder cover of setting at the both ends of cylinder body, all be equipped with the axle head on the cylinder cover, the cylinder body is connected on the frame through axle head rotation, the axle head on the one end of cylinder body is equipped with synchronous wheel, and synchronous wheel is connected with drive motor through synchronous belt and drives the rotation of cylinder body on the frame, and the axle head on the cylinder cover is hollow, and one end of cylinder body is equipped with the drain pipe for extracting the condensed water in cylinder body, and water pump is equipped on the drain pipe, and the other end of cylinder body is equipped with the air inlet pipe for facilitating the steam into cylinder body, and air inlet pipe and drain pipe are all connected on the axle head at both ends of cylinder body through sealing bearing respectively, and the inner wall of cylinder body is connected with the turbulence strip, and the turbulence strip is arranged along the circumference of cylinder body.

[0008] Further setting is that the turbulence strip is provided with the turbulence piece, and the turbulence piece is zigzag, and the turbulence piece is connected on the inner wall of cylinder body.

[0009] Further setting is that the turbulence strip is equipped with several, and the inner wall of cylinder body is separated into several molding surfaces by several turbulence strips, and the input end of drain pipe is provided with several branch pipes corresponding to several molding surfaces.

[0010] Further setting is that the cylinder cover is connected with the heat insulation pad.

[0011] By adopting the above technical scheme, the utility model has the beneficial effects that when the cylinder body rotates, the turbulence strip avoids the water film formation on the inner wall of cylinder body, improves the heat conduction efficiency between steam and drying cylinder, the water produced in the cylinder body is discharged in time by the drain pipe, avoids the influence of the water produced in the cylinder body on steam temperature and reduces the heating effect of steam on the surface of cylinder body, further avoids the water film formation on the inner wall of cylinder body, and the steam enters the cylinder body through the air inlet pipe and directly heats the inner wall of cylinder body, so that the surface of cylinder body can quickly reach the required temperature. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 It is the structural schematic diagram of the utility model embodiment.

[0013] Fig. 2 It is the structural schematic diagram of the turbulence strip and cylinder body cooperation.

[0014] Fig. 3 It is the structural schematic diagram of the turbulence strip and turbulence piece cooperation.

[0015] In the drawing: cylinder body 1, cylinder cover 2, axle head 3, synchronous wheel 4, drain pipe 5, water pump 6, air inlet pipe 7, sealing bearing 301, turbulence strip 8, turbulence piece 9, molding surface 10, branch pipe 501, heat insulation pad 11. DETAILED DESCRIPTION

[0016] Referring to Figs. 1 to 3 Further description is made to the embodiment of the utility model.

[0017] An energy-saving paper machine drying cylinder, comprising a cylinder body 1 and cylinder covers 2 arranged at both ends of the cylinder body 1, shaft heads 3 are fixedly connected to the cylinder covers 2, the cylinder body 1 is rotatably connected to a rack through the shaft heads 3, a synchronous wheel 4 is fixedly connected to the shaft head 3 at one end of the cylinder body 1, the synchronous wheel 4 is connected with a driving motor through a synchronous belt to drive the cylinder body 1 to rotate on the rack, the shaft heads 3 on the cylinder covers 2 are hollow, one end of the cylinder body 1 is provided with a drain pipe 5 for pumping out the condensed water in the cylinder body 1, a water pump 6 is arranged on the drain pipe 5, the other end of the cylinder body 1 is provided with an air inlet pipe 7 for facilitating the steam to enter the cylinder body 1, the air inlet pipe 7 and the drain pipe 5 are respectively connected to the shaft heads 3 at both ends of the cylinder body 1 through sealing bearings 301, so that the air inlet pipe 7 and the drain pipe 5 can work normally without rotating with the cylinder body 1 when the cylinder body 1 rotates, turbulence strips 8 are fixedly connected to the inner wall of the cylinder body 1 and are arranged along the circumference of the cylinder body 1.

[0018] The steam enters the cylinder body 1 through the air inlet pipe 7 and directly heats the inner wall of the cylinder body 1, so that the surface of the cylinder body 1 can be rapidly heated, with the heating of the cylinder body 1 and the steam, the condensed water is gradually produced in the cylinder body 1, when the cylinder body 1 rotates, the turbulence strips 8 on the inner wall of the cylinder body 1 hinder the formation of a water film on the inner wall of the cylinder body 1, and the water pump 6 works in cooperation with the drain pipe 5 to pump out the condensed water through the drain pipe 5, so that the amount of the condensed water in the cylinder body 1 is insufficient to cover the inner wall of the cylinder body 1, which indirectly hinders the formation of the water film on the inner wall of the cylinder body 1, at the same time, the water pump 6 cooperates with the drain pipe 5 to timely pump out the condensed water in the cylinder body 1 to avoid the condensed water absorbing the heat of the steam and reducing the heating effect of the steam on the cylinder body 1, finally, the turbulence strips 8 avoid the formation of the water film on the inner wall of the cylinder body 1 when the cylinder body 1 rotates, the heat conduction efficiency between the steam and the drying cylinder is improved, the water produced in the cylinder body 1 is timely pumped out through the drain pipe 5, which avoids the water produced in the cylinder body 1 affecting the temperature of the steam and reducing the heating effect of the steam on the surface of the cylinder body 1, and further avoids the formation of the water film on the inner wall of the cylinder body 1, and the steam enters the cylinder body 1 through the air inlet pipe 7 and directly heats the inner wall of the cylinder body 1, which facilitates the surface of the cylinder body 1 to rapidly reach the required temperature.

[0019] The turbulence strips 8 are fixedly connected with turbulence pieces 9, the turbulence pieces 9 are sawtooth-shaped, the turbulence pieces 9 are fixedly connected to the inner wall of the cylinder body 1, the sawtooth-shaped arrangement of the turbulence pieces 9 increases the difficulty of the formation of the water film on the inner wall of the cylinder body 1, which further avoids the formation of the water film on the inner wall of the cylinder body 1.

[0020] The disturbance strips 8 are provided with a plurality of disturbance strips 8, which increase the disturbance of the condensed water on the inner wall of the cylinder body 1, and are beneficial to better hinder the formation of the water film. The inner wall of the cylinder body 1 is divided into a plurality of shaped surfaces 10 by the plurality of disturbance strips 8. The input end of the drain pipe 5 is provided with a plurality of branch pipes 501 corresponding to the plurality of shaped surfaces 10. The disturbance pieces 9 on the disturbance strips 8 hinder the formation of the water film on the corresponding shaped surfaces 10. The plurality of branch pipes 501 are arranged to facilitate the discharge of the condensed water on the corresponding shaped surfaces 10 through the drain pipe 5.

[0021] The heat insulation pad 11 is connected to the cylinder cover 2, and the heat insulation pad 11 is composed of ceramic fibers, so that the heat loss of the cylinder body 1 from the position of the cylinder cover 2 is reduced.

[0022] The above only describes the preferred embodiments of the present application, and is not used to limit the present application. The skilled in the art should include the changes and replacements within the technical scheme of the present application in the protection scope of the present application.

Claims

1. An energy-saving paper machine drying cylinder, comprising a cylinder body (1) and cylinder covers (2) arranged at both ends of the cylinder body (1), each of the cylinder covers (2) is provided with a shaft head (3), and the cylinder body (1) is rotatably connected to a frame through the shaft heads (3), characterized in that, The shaft head (3) at one end of the cylinder body (1) is provided with a synchronous wheel (4), the synchronous wheel (4) is connected with a driving motor through a synchronous belt to drive the cylinder body (1) to rotate on a rack, the shaft head (3) on the cylinder cover (2) is hollow, one end of the cylinder body (1) is provided with a drain pipe (5) for pumping out condensed water in the cylinder body (1), the drain pipe (5) is provided with a water pump (6), the other end of the cylinder body (1) is provided with an air inlet pipe (7) for facilitating steam to enter the cylinder body (1), the air inlet pipe (7) and the drain pipe (5) are connected on the shaft head (3) at two ends of the cylinder body (1) through sealing bearings (301) respectively, the cylinder body (1) is connected with turbulence strips (8) on the inner wall, the turbulence strips (8) are arranged along the circumference of the cylinder body (1).

2. An energy efficient paper machine dryer according to claim 1, characterized in that The turbulence strips (8) are provided with turbulence pieces (9), the turbulence pieces (9) are sawtooth-shaped, and the turbulence pieces (9) are connected on the inner wall of the cylinder body (1).

3. An energy efficient paper machine dryer according to claim 2, characterized in that The turbulence strips (8) are provided with a plurality of turbulence strips (8), the inner wall of the cylinder body (1) is divided into a plurality of shaped surfaces (10) by the plurality of turbulence strips (8), and the input end of the drain pipe (5) is provided with a plurality of branch pipes (501) corresponding to the plurality of shaped surfaces (10) one by one.

4. An energy efficient paper machine dryer according to claim 3, characterized in that The cylinder cover (2) is connected with a heat insulation pad (11).

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