Replaceable sealed steel yank cylinder

By employing a combination design of double-row bolt-hole flanges and gaskets in the steel Yanke cylinder, the problem of steam leakage was solved, enabling rapid maintenance and efficient production, and improving the equipment's durability and safety.

CN224513931UActive Publication Date: 2026-07-17LIYANG JIANGNAN DRYER MFG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
LIYANG JIANGNAN DRYER MFG
Filing Date
2025-08-01
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing steel Yankee cylinders are prone to steam leakage during use, and the gaskets cannot be replaced on-site, affecting production safety and efficiency, and the maintenance costs are high.

Method used

The design combines a double-row bolt hole flange and a sealing gasket to form a double sealing structure. The sealing gasket can be replaced independently. Combined with the equal-diameter cylinder body and the equal-diameter stop design of the spindle, it enables rapid maintenance.

Benefits of technology

It effectively prevents steam leakage, reduces heat loss and safety risks, shortens downtime, reduces maintenance costs, extends equipment life, and improves production efficiency and heat transfer efficiency.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224513931U_ABST
    Figure CN224513931U_ABST
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Abstract

The utility model provides a replaceable sealed steel yankee cylinder, this replaceable sealed steel yankee cylinder, including equal diameter cylinder body, equal diameter mandrel, double row bolt hole flange, sealing washer and fastening bolt, equal diameter cylinder body adopts equal diameter stopper design with mandrel, cooperation inner wall ring groove, realize accurate positioning and efficient heat conduction, double row bolt hole flanger and sealing washer combination form double sealing structure, and fastening bolt ensures the sealing reliability, effectively puts an end to steam leakage, independent flange design makes sealing washer and other vulnerable parts can be quickly replaced, and the dismounting process does not influence cylinder body and mandrel assembly accuracy, greatly shortens the downtime maintenance time. Through above -mentioned structure, this yankee cylinder can enhance the resistance to complex working condition load, prolongs the service life of equipment, reduces energy, manpower and raw material cost, has the economic and environmental protection benefit, satisfies modern papermaking industry high efficiency, stable production demand.
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Claims

1. A replaceable, sealed steel Yankee cylinder, characterized in that, include: A cylinder body (1) of equal diameter is provided. A first end cap (2) is fixedly connected to the left end of the cylinder body (1), and a second end cap (3) is fixedly connected to the right end of the cylinder body (1). A first shaft head (4) and a second shaft head (5) are respectively placed in the central through holes of the first end cap (2) and the second end cap (3). An equal diameter mandrel (11) is provided between the first shaft head (4) and the second shaft head (5). A first double-row bolt hole flange (12) is fixedly connected to the left end of the first shaft head (4) by a second fastening bolt (16), and a second double-row bolt hole flange (13) is fixedly connected to the right end of the second shaft head (5) by a third fastening bolt (20). A first sealing gasket (14) is provided between the first double-row bolt hole flange (12) and the first shaft head (4) and the first end cover (2), and a second sealing gasket (18) is provided between the second double-row bolt hole flange (13) and the second shaft head (5) and the second end cover (3).

2. A replaceable sealed steel yanmar cylinder according to claim 1, characterized in that: The outer side of the equal diameter mandrel (11) is provided with a steam passage (22).

3. A replaceable sealed steel yanmar cylinder as claimed in claim 1, wherein: The first shaft head (4) has a steam inlet hole (23) inside, and the right end of the steam inlet hole (23) is connected to the inside of the equal diameter mandrel (11).

4. A replaceable sealed steel yanmar cylinder as claimed in claim 1, wherein: The second shaft head (5) is provided with a condensate drain hole (24) inside, and the left end of the condensate drain hole (24) is connected to the interior of the equal diameter mandrel (11).

5. A replaceable sealed steel yanmar cylinder as claimed in claim 1, wherein: The first end cap (2) has a first inspection port (7) inside near the upper end, and the front end of the first inspection port (7) is fixedly connected to the first inspection cover (8) by the first fixing bolt (17).

6. A replaceable sealed steel yanmar cylinder as claimed in claim 1, wherein: The second end cap (3) has a second inspection port (9) inside near the lower end. The front end of the second inspection port (9) is fixedly connected to the second inspection cover (10) by the second fixing bolt (19).

7. A replaceable sealed steel yanmar cylinder as claimed in claim 1, wherein: The inner wall of the equal-diameter cylinder (1) is provided with annular grooves (6), and the number of annular grooves (6) is multiple and they are distributed horizontally at equal intervals.

8. A replaceable sealed steel Yankee cylinder according to claim 1, characterized in that: The first double-row bolt hole flange (12) is provided with a first fastening bolt (15) at its left end. The right end of the first fastening bolt (15) passes through the first double-row bolt hole flange (12) and is connected to the internal thread of the first end cover (2). The second double-row bolt hole flange (13) is provided with a fourth fastening bolt (21) at its right end. The left end of the fourth fastening bolt (21) passes through the second double-row bolt hole flange (13) and is connected to the internal thread of the second end cover (3).