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CN-224227549-U - Efficient cross-buckling type turbulent flow rod of drying cylinder

CN224227549UCN 224227549 UCN224227549 UCN 224227549UCN-224227549-U

Abstract

The utility model discloses a cross-buckling type efficient turbulent flow bar of a drying cylinder, which relates to the technical field of papermaking machinery and comprises turbulent flow bars and supporting rings, wherein the turbulent flow bars and the supporting rings are made of stainless steel U-shaped cold-bent equilateral channel steel and are uniformly distributed along the circumferential direction of the drying cylinder, the supporting rings are uniformly distributed along the transverse direction of the drying cylinder, positioning clamping grooves are respectively arranged on the turbulent flow bars and the supporting rings, the positioning is realized through mutual engagement of the positioning clamping grooves during assembly, and the U-shaped grooves are opposite and form an angle of 90 degrees during installation, so that the turbulent flow bars and the supporting rings are mutually clamped into and then are locked in the circumferential direction and the transverse direction of the drying cylinder. And the stainless steel material is adopted, so that the structural strength is ensured, the overall weight is greatly reduced, the required tensioning force is remarkably reduced, the running load is lightened, and the stability and the safety of the system are improved.

Inventors

  • WU KUANGLAN
  • XU LI
  • GAO YONGFA
  • LIN SHUANGPING
  • HE ZELI
  • LIU ZHIPING

Assignees

  • 溧阳市江南烘缸制造有限公司

Dates

Publication Date
20260512
Application Date
20250508

Claims (7)

  1. 1. The cross-buckling type efficient dryer turbulent flow bar is characterized by comprising a turbulent flow bar (1) and a supporting ring (2), wherein the turbulent flow bar is made of stainless steel U-shaped cold-bent equilateral channel steel; The turbulence bars (1) are uniformly distributed along the circumferential direction of the drying cylinder, and the support rings (2) are uniformly distributed along the transverse direction of the drying cylinder; The vortex bar (1) and the support ring (2) are respectively provided with a positioning clamping groove (21), positioning is achieved through mutual engagement of the positioning clamping grooves (21) during assembly, and U-shaped grooves are opposite and form an angle of 90 degrees during installation, so that the vortex bar (1) and the support ring (2) are mutually clamped into and then locked in the circumferential direction and the transverse direction of the drying cylinder.
  2. 2. The interactive efficient dryer turbulent flow bar as claimed in claim 1, wherein the circumferential equal fraction of the supporting ring (2) is 4-12 equal fractions, and the arc lengths of the equal fractions are equal.
  3. 3. The cross-buckling type efficient dryer turbulent flow bar as claimed in claim 2, wherein the supporting rings (2) which are equally divided are connected through tensioning bolts (3) to form an annular structure, and the turbulent flow bar is used for ensuring that the turbulent flow bar (1) is tightly attached to a cylinder surface while being meshed with the supporting rings (2) and synchronously rotates along with a dryer.
  4. 4. The cross-buckling type efficient dryer turbulent flow bar as claimed in claim 1, wherein the thickness of the groove bottom of the stainless steel U-shaped cold-bent equilateral channel steel is 2-4mm, and the thickness of the side wall is 1.5-3mm.
  5. 5. The interactive efficient dryer turbulent flow bar as claimed in claim 3, wherein the axial direction of the tensioning bolt (3) forms an included angle of 30-60 degrees with the radial direction of the dryer.
  6. 6. The interactive high-efficiency dryer turbulent flow bar as claimed in claim 1, wherein the contact surface of the turbulent flow bar (1) and the supporting ring (2) is provided with anti-slip lines.
  7. 7. The interactive high-efficiency dryer turbulent flow bar of claim 1, wherein the stainless steel U-shaped cold-formed equilateral channel steel is made of 304L or 316L stainless steel by a cold-forming process.

Description

Efficient cross-buckling type turbulent flow rod of drying cylinder Technical Field The utility model relates to the technical field of papermaking machinery, in particular to a cross-buckling type efficient turbulent flow rod of a drying cylinder. Background Turbulent flow bar for drying cylinder of paper machine forming a water ring state occasion. In the paper making process, the turbulence bar is positioned in the dryer of the paper machine, and by improving the heat conduction performance and the condensed water discharging process, the heat transfer speed can be improved, and good drying uniformity ‌ can be obtained. The turbulence bar generates resonance waves by disturbing a condensed water film in the drying cylinder, breaks the laminar flow state, and remarkably enhances the heat transfer efficiency, thereby improving the drying speed and the productivity ‌ of the paper machine. In addition, the turbulent flow rod can ensure the drying uniformity of the banner, and through uniformly distributing heat, the phenomenon of partial overdry or undry of paper is reduced, the consistency of the quality of finished products is improved, and the problems of curling, breakage and the like ‌ are avoided. The spoiler bar is typically in the form of a stainless steel rectangular tube fitted with a carbon steel support plate. Rectangular turbulent flow bars which are uniformly distributed on the circumference of the drying cylinder and are different in number according to the size of the drying cylinder penetrate through the transverse direction of the drying cylinder and are attached to the inner wall of the drying cylinder. Uniform distribution of drying cylinder transverse direction a plurality of carbon steel support rings. The annular plate rolled by the carbon steel plate is fixed with the turbulent flow bar through the fixing pin. Each support ring is divided into different equal parts according to the size of the drying cylinder, and the radial force is transmitted to each turbulence bar by adopting a tensioning bolt, so that synchronous rotation operation of the turbulence bar and the drying cylinder is realized. With the increase of the speed and the width of a paper machine, the turbulence bar with the structure has a plurality of problems. Because the supporting ring and the turbulent flow bar are positioned by adopting the fixing pins, in order to ensure the size of the matching surface and stabilize the fixing pins, the supporting ring has great dead weight, and can bear great tensioning force, but is overweight due to the dead weight. The speed of a motor vehicle is increased at any time, and after long-term operation, the gap between the fixing pin and the supporting ring is increased, so that vibration can be generated, and the internal balance state of the drying cylinder is damaged. Thereby causing tension failure and circumferential and banner displacement between the spoiler bars. The operation precision of the drying cylinder is out of tolerance, normal paper output is affected, a turbulent flow rod is separated from a supporting ring under serious conditions, the drying cylinder is damaged, and safety accidents are formed. Disclosure of utility model The utility model aims to solve the technical problem of overcoming the defects of the prior art and providing a cross-buckling type efficient turbulent flow rod of a drying cylinder, which is used for solving the problems in the background art. In view of the above, the utility model provides a cross-buckling type efficient dryer turbulent flow bar, which comprises a turbulent flow bar and a supporting ring, wherein the turbulent flow bar is made of stainless steel U-shaped cold-bent equilateral channel steel; The turbulence bars are uniformly distributed along the circumferential direction of the drying cylinder, and the support rings are uniformly distributed along the transverse direction of the drying cylinder; The U-shaped groove is opposite to the U-shaped groove and forms an angle of 90 degrees with each other during installation, so that the vortex bar and the support ring are locked in the circumferential direction and the transverse direction of the drying cylinder after being clamped into each other. Optionally, the circumferential equal fraction of the support ring is 4-12 equal fractions, and the arc lengths of the equal fractions are equal. Optionally, the supporting rings are connected through tensioning bolts to form an annular structure, so that the vortex bar is tightly attached to the cylinder surface while being meshed with the supporting rings, and synchronously rotates along with the drying cylinder. Optionally, the thickness of the groove bottom of the stainless steel U-shaped cold-bent equilateral channel steel is 2-4mm, and the thickness of the side wall is 1.5-3mm. Optionally, the axial direction of the tensioning bolt forms an included angle of 30-60 degrees with the radial direction of the drying cylinder. Optional