CN213951768U

CN213951768U - Corrugated paper preheater

Info

Publication number: CN213951768U
Application number: CN202022975524.6U
Authority: CN
Inventors: 贺远兵; 杨川; 刘勇; 冯超
Original assignee: Zhejiang Xiasha Rongcheng Packaging Co ltd
Current assignee: Zhejiang Xiasha Rongcheng Packaging Co ltd
Priority date: 2020-12-08
Filing date: 2020-12-08
Publication date: 2021-08-13
Anticipated expiration: 2030-12-08

Abstract

The application relates to a corrugated paper preheater relates to the technical field of corrugated board processing. High-temperature steam is introduced into the preheating cylinder, the high-temperature steam is in contact with the inner wall of the preheating cylinder and is condensed into liquid, a siphon is arranged in the preheating cylinder, a gap possibly exists between the siphon and the inner wall of the preheating cylinder, part of condensed water cannot be discharged, the condensed water can prevent the steam from exchanging heat with the preheating cylinder, and the heat exchange efficiency is poor. This application includes the backup pad, rotates to connect in the backup pad preheat the jar, be used for the drive to preheat jar pivoted motor and cornerite mechanism, and the inner wall that preheats the jar is equipped with eight vortex sand grips, and the vortex sand grip sets up along circumference equidistant. The preheating cylinder is provided with a siphon pipe, and one end of the siphon pipe, which is positioned in the preheating cylinder, is sequentially connected with a drain valve, a steam-water separator and a water collecting hopper. When the condensate water flows along the inner wall of the preheating cylinder, the condensate water is separated from the inner wall of the preheating cylinder under the action of the turbulence raised lines, and part of the condensate water falls into the water collecting hopper and is discharged through the siphon pipe, so that the heat exchange efficiency of the preheating cylinder is improved.

Description

Corrugated paper preheater

Technical Field

The application relates to the field of corrugated board processing, in particular to a corrugated paper preheater.

Background

At present, in the process of corrugated paper processing, the raw paper needs to be preheated, and then the steps of gluing, bonding, longitudinal and transverse shearing and the like are carried out after the raw paper is preheated. The preheating process is related to the quality of the subsequent formed paperboard, is completed by means of a preheater, and mainly adjusts the temperature and the surface humidity of the base paper so as to ensure that the base paper has better adhesiveness.

The preheater generally includes a preheating cylinder, and a cylindrical steam chamber is formed in the preheating cylinder. Before the corrugated paper is preheated, high-temperature steam is firstly introduced into the steam cavity, the temperature of the preheating cylinder is raised by the high-temperature steam, and the base paper is wound on the peripheral surface of the preheating cylinder during conveying, so that the base paper is preheated. When the high-temperature steam heats the preheating cylinder, the high-temperature steam contacts the inner wall of the preheating cylinder and is condensed into liquid, and a siphon pipe used for guiding out condensed water is arranged in the steam cavity.

In view of the above-mentioned related technologies, the inventor believes that a gap may exist between one end of the siphon tube extending into the preheating cylinder and the inner wall of the preheating cylinder, so that a thin condensed water film can still be formed in the preheating cylinder, and the condensed water film plays a role in heat insulation, thus preventing heat exchange between high-temperature steam and the preheating cylinder, and further reducing the preheating effect on the base paper.

SUMMERY OF THE UTILITY MODEL

In order to improve the preheating effect of preheating the jar to the body paper, this application provides a corrugated paper preheater.

The application provides a corrugated paper preheater adopts following technical scheme:

the utility model provides a corrugated paper preheater, includes and preheats the jar, preheats the inside column steam chamber of having seted up of jar, and column steam intracavity portion is equipped with the siphon that is used for deriving the comdenstion water, is equipped with the vortex sand grip that a plurality of set up along circumference equidistant on the inner wall in column steam chamber, and the vortex sand grip is on a parallel with the axis that preheats the jar.

Through adopting above-mentioned technical scheme, preheating the pivoted in-process of jar, the vortex sand grip can make the comdenstion water form the torrent in column steam chamber, and the comdenstion water flows the in-process and contacts the vortex sand grip to break away from the inner wall in column steam chamber, make high temperature steam can directly carry out the heat transfer with preheating the jar, and then improve the preheating effect to the body paper.

Optionally, the turbulence convex strips comprise guide surfaces connected to the inner wall of the cylindrical steam cavity, and the axis of the preheating cylinder is located in the guide surfaces.

Through adopting above-mentioned technical scheme, at the pivoted in-process of preheating the jar, the comdenstion water moves to the axis of preheating the jar along the direction of orientation, even the comdenstion water is under receiving the effect of centrifugal force, also is favorable to increasing the time that the comdenstion water breaks away from column steam intracavity wall for high temperature steam has more time and directly carries out the heat transfer with preheating the jar, further improves the preheating effect to the body paper.

Optionally, an arc-shaped transition surface is arranged between the guide surface and the inner wall of the cylindrical steam cavity.

Through adopting above-mentioned technical scheme, the arc transition face plays the effect of intermediate junction transition, is favorable to making the comdenstion water move to the spigot surface along the arc transition face to improve the probability that the comdenstion water breaks away from column steam intracavity wall.

Optionally, one end of the siphon tube extending into the columnar steam cavity is connected with a water collecting hopper, an opening is formed in the upper end of the water collecting hopper, and the water collecting hopper is located below the axis of the preheating cylinder.

Through adopting above-mentioned technical scheme, the water catch bowl plays the effect of collecting the comdenstion water, and the comdenstion water is behind the inner wall that breaks away from the column steam chamber, and partial comdenstion water can move and flow into to the water catch bowl in, then derives to the external world through the siphon.

Optionally, the inner bottom surface of the water collecting hopper is obliquely arranged, and the siphon is connected to the lowest position of the inner bottom surface of the water collecting hopper.

Through adopting above-mentioned technical scheme, the interior bottom surface slope of collecting hopper sets up, and the comdenstion water of being convenient for moves to the siphon along the slope bottom surface to impel the comdenstion water to derive to external.

Optionally, a hydrophilic vertical plate is arranged in the water collecting hopper, the lower end of the hydrophilic vertical plate is connected to the inner bottom surface of the water collecting hopper, and the upper end of the hydrophilic vertical plate is higher than the axis of the preheating cylinder.

Through adopting above-mentioned technical scheme, the inner wall that the comdenstion water breaks away from the column steam chamber under the effect of vortex sand grip makes centrifugal motion, contacts and adheres to on hydrophilic riser in the motion process, then flows into to the water collecting bucket along hydrophilic riser to improved the collection effect of water collecting bucket to the comdenstion water, reduced the content of the comdenstion water in the preheating cylinder, be favorable to further raising high temperature steam and the heat transfer effect of preheating the cylinder.

Optionally, a drain valve is connected between the water collecting hopper and the siphon.

Through adopting above-mentioned technical scheme, the trap can reduce steam emission when discharging the comdenstion water, reaches the purpose that hinders vapour and drain water, is favorable to improving the heat exchange efficiency of preheating the jar.

Optionally, a steam-water separator is connected between the water collecting hopper and the drain valve.

Through adopting above-mentioned technical scheme, catch water can detach the moisture of suspension in steam that can not arrange through the trap, effectively reduces the water content in the high temperature steam, further improves the heat exchange efficiency of preheating the jar.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the plurality of turbulence convex strips are arranged to promote the condensate water to be separated from the inner wall of the columnar steam cavity, so that the high-temperature steam can directly exchange heat with the preheating cylinder, and the preheating effect on the base paper is further improved;

2. by arranging the hydrophilic vertical plate, condensed water can contact and flow into the water collecting hopper along the hydrophilic vertical plate when performing centrifugal motion, so that the content of the condensed water in the preheating cylinder is reduced, and the heat exchange effect of high-temperature steam and the preheating cylinder is further improved;

3. through setting up trap and catch water, the siphon reduces high temperature steam and discharges when discharging the comdenstion water, improves the heat exchange efficiency of preheating the jar.

Drawings

FIG. 1 is a schematic structural diagram of a corrugated paper preheater according to an embodiment of the present disclosure;

FIG. 2 is a partial exploded view of the preheating cylinder of FIG. 1 showing the water collection hopper, support rods, trap, etc.;

FIG. 3 is a sectional view of the preheating cylinder of FIG. 1, showing the cross-sectional shape of the turbulator ribs.

Description of reference numerals: 1. a support plate; 2. preheating a cylinder; 21. a cylinder body; 211. a columnar steam cavity; 22. a cylinder cover; 221. an end cap plate; 222. an end cap cartridge; 223. a communicating hole; 224. a driven gear; 225. rotating the pipeline joint; 226. a steam input pipe; 23. turbulence convex strips; 231. a guide surface; 232. an arc transition surface; 24. a siphon tube; 25. a drain valve; 26. a steam-water separator; 27. a water collecting hopper; 271. a hydrophilic riser; 272. a support bar; 273. a support ring; 3. a motor; 31. a driving gear; 4. a wrap angle mechanism; 41. a guide roller; 5. base paper.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses corrugated paper preheater. Referring to fig. 1 and 2, a corrugated paper preheater comprises two support plates 1 arranged oppositely, a preheating cylinder 2 arranged between the two support plates 1 in a rotating manner, a motor 3 for driving the preheating cylinder 2 to rotate, and a wrap angle mechanism 4 for promoting the base paper 5 to be attached to the preheating cylinder 2. The preheating cylinder 2 comprises a cylinder body 21 in a cylindrical shape and two cylinder covers 22 connected to two ends of the cylinder body 21 through flanges, and a cylindrical steam cavity 211 is formed inside the cylinder body 21. The cylinder head 22 includes a cover plate 221 abutting on an end portion of the cylinder body 21 and a cover cylinder 222 fixedly connected to the cover plate 221 on a side away from the cylinder body 21, and a communication hole 223 penetrating the cover plate 221 is formed in the cover cylinder 222.

The end cover cylinders 222 of the two cylinder covers 22 are rotatably connected to the two support plates 1 through bearings, and the ends of the end cover cylinders 222 penetrate through the support plates 1. One of them end cover section of thick bamboo 222 stretches out the part of backup pad 1 and is equipped with driven gear 224, and driven gear 224 joint is in the peripheral face of end cover section of thick bamboo 222, and motor 3 fixed mounting is in the side of backup pad 1, and motor 3's output shaft joint has driving gear 31, and driving gear 31 is connected with driven gear 224 meshing. The end of the end cover cylinder 222 is connected with a rotary pipeline joint 225 commonly used in pipelines, and one end of the rotary pipeline joint 225 far away from the end cover cylinder 222 is connected with a steam input pipe 226, so that the motor 3 drives the preheating cylinder 2 to rotate without influencing the high-temperature steam to enter the preheating cylinder 2 from the steam input pipe 226. The wrap angle mechanism 4 comprises two guide rollers 41 which are arranged in parallel, two ends of each guide roller 41 are respectively and rotatably connected with the two support plates 1 through bearings, one guide roller 41 is close to and arranged above the preheating cylinder 2, and the other guide roller 41 is close to and arranged below the preheating cylinder 2.

High-temperature steam enters the cylindrical steam cavity 211 from the steam input pipe 226, the high-temperature steam exchanges heat with the cylinder 21, the temperature of the cylinder 21 rises, and the steam is pre-cooled and condensed into liquid. The base paper 5 passes through the upper guide roll 41, the preheating cylinder 2, and the lower guide roll 41 in this order during conveyance, so that the base paper 5 adheres to the outer peripheral surface of the preheating cylinder 2. The motor 3 rotates the driving gear 31, and the driving gear 31 rotates the driven gear 224, so that the preheating cylinder 2 rotates, and the preheating cylinder 2 heats the base paper 5 while rotating.

Referring to fig. 2 and 3, eight turbulence protruding strips 23 are fixedly arranged on the inner wall of the cylinder 21, the turbulence protruding strips 23 are arranged at equal intervals along the circumferential direction, and the length of the turbulence protruding strips 23 is the same as that of the cylinder 21. The cross section of the turbulent flow convex strip 23 is roughly triangular, the turbulent flow convex strip 23 comprises two crossed guide surfaces 231 and two oppositely arranged arc-shaped transition surfaces 232, one side of the two guide surfaces 231 close to the axis of the cylinder body 21 is crossed to form an acute angle, and one side of the two guide surfaces 231 far away from the axis of the cylinder body 21 is fixedly connected to the inner wall of the cylinder body 21. The arc transition surface 232 is disposed between the guide surface 231 and the inner wall of the cylinder 21, and plays a role of smooth transition. The axis of the cylinder body 21 is located in the guide surface 231, and when the rotating speed of the preheating cylinder 2 is low, the centrifugal effect of the condensed water is not considered, and the condensed water can move to the axis of the cylinder body 21 along the arc-shaped transition surface 232 and the guide surface 231 when flowing to the turbulent protruding strips 23.

If no turbulence convex strip 23 is arranged, a gap may exist between the siphon 24 and the inner wall of the cylinder body 21, part of condensed water cannot be discharged from the siphon 24, the condensed water forms a condensed water film along the inner wall of the cylinder body 21, the condensed water is in a stable laminar state in the cylindrical steam cavity 211, and the condensed water blocks the high-temperature steam to exchange heat with the cylinder body 21, so that the preheating effect of the preheating cylinder 2 on the base paper 5 is reduced. After setting up vortex sand grip 23, the comdenstion water moves 23 departments of vortex sand grip, then breaks away from the inner wall of cylinder body 21 along spigot surface 231 to make the comdenstion water tend to the torrent by laminar flow state, make high temperature steam can carry out direct heat transfer with cylinder body 21, improve heat exchange efficiency.

Referring to fig. 1 and 2, a siphon tube 24 is inserted into the end cover cylinder 222 on the side far from the motor 3, one end of the siphon tube 24 extends into the cylindrical steam cavity 211 and is arranged close to the inner wall of the cylindrical steam cavity 211, and the siphon tube 24 is rotatably connected to the inner wall of the end cover cylinder 222 through a bearing. The part of the siphon pipe 24 extending out of the cylindrical steam cavity 211 is attached and fixed on the supporting plate 1 through a pipe clamp, one end of the siphon pipe 24 positioned inside the cylinder body 21 is connected with a common drain valve 25, one end of the drain valve 25 far away from the siphon pipe 24 is connected with a common steam-water separator 26, and one end of the steam-water separator 26 far away from the drain valve 25 is connected with a rectangular water collecting hopper 27. The upper end opening of water collecting bucket 27 sets up, and water collecting bucket 27 is located the below of cylinder body 21 axis and sets up just slope, and the bottom surface is the slope state in water collecting bucket 27, and the upper end of bottom surface is farther away from catch water 26 than the lower extreme in water collecting bucket 27, and catch water 26 communicates in the lateral wall of water collecting bucket 27.

The condensed water falls into the water collection bucket 27 while moving in the cylinder 21, then passes through the steam-water separator 26, the drain valve 25 in order, and is then discharged to the outside along the siphon tube 24. The steam trap 25 and the steam-water separator 26 both have the effects of blocking steam and discharging water, and reduce the discharge of high-temperature steam in the cylinder 21 from the siphon 24 to the outside. Since siphon pipe 24 is fixedly mounted on support plate 1, when motor 3 drives preheating cylinder 2 to rotate, siphon pipe 24 is kept fixed, and drain valve 25 and water collecting bucket 27 connected to siphon pipe 24 are all kept fixed.

The fixed hydrophilic riser 271 that is vertical state that is provided with in the water collecting bucket 27, hydrophilic riser 271 is thinner aluminum plate, and the setting of vertical upwards extending of interior bottom surface of hydrophilic riser 271 from water collecting bucket 27, the upper end of hydrophilic riser 271 is higher than the axis of cylinder body 21 and is close to the inner wall of cylinder body 21. A support rod 272 is fixedly connected to one side of the water collecting bucket 27 far away from the steam-water separator 26, a support ring 273 is fixedly connected to one end of the support rod 272 far away from the water collecting bucket 27, part of the support ring 273 extends into the communication hole 223 of the end cover cylinder 222, the support ring 273 is rotatably connected with the end cover cylinder 222, and the support rod 272 is fixedly connected to the outer peripheral surface of the support ring 273.

The condensed water breaks away from the inner wall of the cylinder body 21 under the action of the turbulence convex strips 23 and tends to be in a turbulent flow state, the condensed water contacts the hydrophilic riser 271 when moving in the cylinder body 21, and the condensed water can flow downwards into the water collecting hopper 27 along the hydrophilic riser 271 due to the good hydrophilicity of the aluminum plate. Due to the inclined arrangement of the water collecting bucket 27, the condensed water can flow to the steam-water separator 26 along the inclined bottom surface of the water collecting bucket 27, thereby avoiding the situation that the condensed water is retained in the water collecting bucket 27 as much as possible and further discharging the condensed water in the cylinder 21. The support bars 272 and the support ring 273 can support the water collecting bucket 27, and the high-temperature steam can enter the cylinder 21 from the support ring 273.

The implementation principle of the embodiment is as follows: by arranging the turbulence convex strips 23, condensed water is promoted to be separated from the inner wall of the columnar steam cavity 211, so that high-temperature steam can directly exchange heat with the preheating cylinder 2, and the preheating effect on the base paper 5 is further improved; by arranging the drain valve 25 and the steam-water separator 26, the siphon 24 discharges condensed water and simultaneously reduces discharge of high-temperature steam, thereby improving heat exchange efficiency of the preheating cylinder 2.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a corrugated paper preheater, includes preheating cylinder (2), preheating cylinder (2) inside has seted up column steam chamber (211), inside siphon (24) that are used for deriving the comdenstion water that are equipped with of column steam chamber (211), its characterized in that: be equipped with a plurality of vortex sand grip (23) that equidistant setting in circumference is followed on the inner wall of column steam chamber (211), vortex sand grip (23) are on a parallel with the axis of preheating cylinder (2).

2. A corrugated paper preheater as recited in claim 1, wherein: the turbulence convex strips (23) comprise guide surfaces (231) connected to the inner wall of the cylindrical steam cavity (211), and the axis of the preheating cylinder (2) is located in the guide surfaces (231).

3. A corrugated paper preheater as recited in claim 2, wherein: an arc-shaped transition surface (232) is arranged between the guide surface (231) and the inner wall of the cylindrical steam cavity (211).

4. A corrugated paper preheater as recited in claim 1, wherein: one end of the siphon (24) extending into the columnar steam cavity (211) is connected with a water collecting hopper (27), the upper end of the water collecting hopper (27) is provided with an opening, and the water collecting hopper (27) is positioned below the axis of the preheating cylinder (2).

5. A corrugated paper preheater as recited in claim 4, wherein: the inner bottom surface of the water collecting hopper (27) is obliquely arranged, and the siphon (24) is connected to the lowest position of the inner bottom surface of the water collecting hopper (27).

6. A corrugated paper preheater as recited in claim 4, wherein: a hydrophilic vertical plate (271) is arranged in the water collecting hopper (27), the lower end of the hydrophilic vertical plate (271) is connected to the inner bottom surface of the water collecting hopper (27), and the upper end of the hydrophilic vertical plate (271) is higher than the axis of the preheating cylinder (2).

7. A corrugated paper preheater as recited in claim 4, wherein: a drain valve (25) is connected between the water collecting hopper (27) and the siphon (24).

8. A corrugated paper preheater as recited in claim 7, wherein: a steam-water separator (26) is connected between the water collecting hopper (27) and the drain valve (25).