China Hot selling Best Price Yankee Dryer Cylinder for Paper Mill vacuum pump for ac

Product Description

Product Description

Dryer Cylinder is divided into :Cast Iron Dryer Cylinder,Steel Dryer Cylinder,Yankee Dryer Cylinder
A Yankee dryer cylinder is a pressure vessel used in the production of tissue paper. On the Yankee dryer cylinder, the paper goes from approximately 42-45% dryness to just over 89% dryness. In industry, MG cylinders or Yankee dryers are primarily used to remove excess moisture from pulp that is about to be converted into paper. The Yankee cylinder can be equipped with a doctor blade and sprayed with adhesives to make the paper stick. Creping is done by the Yankee’s doctor blade that is scraping the dry paper off the cylinder surface thereby crêping the paper. The crinkle (crêping) is controlled by the strength of the adhesive, geometry of the doctor blade, speed difference between the yankee and final section of the paper machine and paper pulp characteristics.
All dryer cylinders, heads and journals are made of special cast iron. Separate journals are bolted CHINAMFG the dryer heads. Dryer shells are ground on the outside and turned on the inside. All dryer journals with steam or condensate pipes have insulation sleeves. The inner surfaces have grooves for the stationary siphons. The front side ends of all dryers contain manholes.

Cast iron material are excellent in durability.This is because the free form flake graphite in the cast iron material ensured its high corrosion and erosion resistance. The cast iron also has good fatigue strength under the pressure roller forces. At the same time, cast iron itself has a good surface performance, does not need metal spraying treatment like steel dryer.

Structure of Dryer Cylinder

The main parts of the dryer include: Shell,Turbulator bars,Syphon, Shell head,Manhole cover,bearing ,Head cover, Steam Joint .

Heat Transfer

At present, most paper machines use steam heating dryer cylinder to provide heat energy, in the way of heat conduction, heat energy is transferred to the paper through the dryer. The humidity is generally from 60% reduced to 5% when the paper coming out from the dryer section, and then into the glazing machine.

Grooved Internal Surface

We provided grooved internal surfaces Yankee dryer for customer choice. The Grooved Yankee dryer internal face is machined with radial grooves, condensed water accumulates in the grooves during running. It is used with a condensate extractor, each siphon on the extractor is located in the groove so that the condensed water can be effectively discharged. Under the same working condition, the grooved internal surface has good heat transfer efficiency and less steam loss than the smooth internal surface because of the reduced thickness at the root of the shell. This design can be applied to the paper machine’s speed within 2200m/min.

Condensate discharge device

Stationary Siphon

Siphon selection is an important factor to maximize drying rate and reduce temperature variation.

The pressure difference requirement of stationary siphons is relatively low. The pressure difference required for cantilever stationary siphon does not increase with the increase of paper machine speed.
Condensate water can be discharged without use high pressure steam power in the case of air inlet pressure and pressure difference close to or lower than atmospheric pressure, it can reduce the corrosion.
Cantilever stationary siphons are usually suitable for medium to high speed paper machines.

 

Condensate Extractors & bars

Condensate extractors

The condensate extractors applied on grooved internal surface Yankee dryer cylinder.

It is supported by CHINAMFG structures which ensure the required frame rigidity.

The entire system is designed to compensate thermal expansion and provide high wear resistance.

The turbo bars helps to increase the heat transfer rate by generating resonance waves in the condensate film.

Advantage

1)Applied to smooth internal surface Yankee dryers

2)Increased condensate turbulence

3)Improved heat transfer and drying capacity

4)Improved surface temperature profile
 

 

Workshop of dryer cylinder

Technical parameters:

Diameter Design Pressure
Mpa
Material Hardness Width Shell Thickness Roughness Working speed
1500 0.3-0.8 HT250-300 190-240 350-10000 25-32 0.2-0.4 200-1200
1800 0.3-0.8 HT250-300 190-240 350-10000 28-36 0.2-0.4 200-1200
2000 0.3-0.8 HT250-300 190-240 1350-5000 30-40 0.2-0.4 200-1200
2500 0.3-0.8 HT250-300 190-240 1350-5000 32-47 0.2-0.4 200-500
3000 0.3-0.8 HT250-300 190-240 1350-5000 37-56 0.2-0.4 200-600
3660 0.3-0.8 HT250-300 190-240 1350-5000 40-65 0.2-0.4 200-1200
3680 0.3-0.8 HT250-300 190-240 1350-5000 as required 0.2-0.4 200-1200
≤1500 0.3-0.5 HT200-250 190-240 1350-5000 18-27 0.2-0.4 200-1200

 Packing & Shipping 

Company Profile

We are a China Based engineering company and machinery supplier committed to offer complate solution and provide high-cost-performance equipments related to stock preparation and paper-making industry.For years,we have insisted on taking customer’s value as our center and having strict quality-control and innovation in the whole process. 

 

With advantage technology and excellent equipment,we provide one-stop service from consultation,process design and optimization,manufacture,installation,commissing and personnel training and so on.At the same time,we can supply all kinds of stock preparation and paper making equipment and accessories.Besides,we can custom design according to customers’ requirements.

Our products have reliable quality and superior performance and have been exported to Poland,Greece,Turkey,Iran,India,Packistan,Bangladesh,Thailand,Indonesia,Philippines,Malaysia,Vietnam,Mexico,Guatemala,Costa Rica,Columbia,Egypt etc.We have established long-term cooperation relationship with many paper mills and agent.

Honesty,cooperation and CHINAMFG are important to us.We insisted on serve our customers with high quality products,sincere service and good reputation.We are appreciated for the long-term trust and favor from our customers.Hope we can cooperate sincerely and make progress together with our new and old customer.

Customer’s satisfaction is our goal !

After-sales Service: Online Service
Warranty: 12 Months
Certification: ISO 9001:2008, CE
Surface Treatment: Polishing
Manufacturing Process: Casting
Material: Cast Iron
Customization:
Available

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rotary cylinder

How do rotary cylinders manage variations in hydraulic pressure and flow rate?

Rotary cylinders are designed to effectively manage variations in hydraulic pressure and flow rate. Here’s a detailed explanation:

1. Pressure Regulation: Rotary cylinders incorporate various mechanisms to manage variations in hydraulic pressure. These mechanisms include pressure relief valves, pressure control valves, and flow control valves. Pressure relief valves are designed to protect the cylinder and the hydraulic system from excessive pressure by diverting excess fluid flow back to the reservoir. Pressure control valves, such as pressure reducing valves or pressure sequence valves, are used to regulate the pressure applied to the rotary cylinder. These valves ensure that the cylinder operates within the desired pressure range, accommodating variations in the hydraulic system.

2. Flow Control: Rotary cylinders also utilize flow control mechanisms to manage variations in hydraulic flow rate. Flow control valves, such as flow restrictors or flow control regulators, are employed to control the amount of fluid flowing into or out of the cylinder. By adjusting the opening of these valves, the flow rate can be regulated, allowing for precise control of the cylinder’s rotational speed or angular displacement. Flow control valves help manage variations in flow rate and optimize the cylinder’s performance.

3. Proportional Control: Proportional control valves are often used in conjunction with rotary cylinders to manage variations in pressure and flow rate. These valves provide continuous and precise control over the hydraulic pressure and flow by adjusting the valve opening proportionally to the input signal. Proportional control allows for real-time adjustments in response to changing operational requirements, ensuring accurate and efficient management of pressure and flow variations.

4. Feedback Devices: Rotary cylinders can incorporate feedback devices, such as pressure sensors and flow sensors, to monitor and provide feedback on the hydraulic pressure and flow rate. These sensors provide real-time information about the operating conditions, allowing for dynamic adjustments to maintain desired pressure and flow levels. Feedback devices help ensure the stability and consistency of the cylinder’s performance, even in the presence of variations in hydraulic pressure and flow rate.

5. Accumulators: In some cases, rotary cylinders can utilize hydraulic accumulators to manage variations in pressure and flow rate. Accumulators store hydraulic energy in the form of pressurized fluid, which can be released when needed to compensate for fluctuations in pressure or flow. By providing an additional source of energy, accumulators help maintain consistent pressure and flow, preventing adverse effects caused by sudden changes in hydraulic conditions.

6. System Design and Optimization: Proper system design and optimization play a crucial role in managing variations in hydraulic pressure and flow rate. This includes selecting appropriate components, sizing the hydraulic lines, and ensuring proper fluid filtration and conditioning. By designing the hydraulic system to match the requirements of the rotary cylinder and the application, variations in pressure and flow rate can be effectively managed, resulting in optimal performance.

By employing these strategies and mechanisms, rotary cylinders can effectively manage variations in hydraulic pressure and flow rate, ensuring reliable and consistent performance in a wide range of applications.

rotary cylinder

What benefits do rotary cylinders offer in terms of efficient rotary motion?

Rotary cylinders offer several benefits in terms of efficient rotary motion. Here’s a detailed explanation:

1. Compact Design: Rotary cylinders have a compact design, allowing them to be easily integrated into machinery and equipment with limited space. Their compact size ensures efficient utilization of available workspace.

2. High Torque Output: Rotary cylinders are capable of generating high torque output, making them suitable for applications that require powerful rotational force. This enables efficient operation even in heavy-duty tasks.

3. Precise Control: Rotary cylinders provide precise control over rotary motion. By adjusting the fluid pressure or flow rate, the rotational speed and position of the cylinder can be accurately controlled, allowing for precise positioning and smooth operation.

4. Quick Response Time: Rotary cylinders offer quick response times, enabling rapid and dynamic rotary motion. They can start, stop, and change direction swiftly, making them ideal for applications that require fast and precise rotary movements.

5. Versatile Mounting Options: Rotary cylinders come with versatile mounting options, allowing them to be easily mounted in different orientations to suit specific application requirements. This flexibility in mounting facilitates efficient integration into various machinery and equipment designs.

6. Energy Efficiency: Rotary cylinders are designed to be energy-efficient. They consume power only during movement, reducing energy consumption and operating costs. Additionally, the compact design of rotary cylinders minimizes friction losses, further enhancing energy efficiency.

7. Durability and Longevity: Rotary cylinders are built to be durable and withstand demanding operating conditions. They are constructed with high-quality materials and undergo rigorous testing to ensure long service life and reliable performance.

8. Wide Range of Sizes and Configurations: Rotary cylinders are available in a wide range of sizes and configurations to accommodate different application requirements. This versatility allows for efficient selection and customization based on specific load capacities, space constraints, and performance needs.

9. Compatibility with Different Fluids: Rotary cylinders are compatible with various hydraulic or pneumatic fluids, providing flexibility in choosing the most suitable fluid for the application. This compatibility ensures efficient operation and reliable performance.

10. Reduction in Manual Labor: By automating rotary motion, rotary cylinders eliminate the need for manual labor in tasks such as rotating or positioning objects. This reduces human effort, increases productivity, and minimizes the risk of repetitive strain injuries.

Overall, the efficient rotary motion provided by rotary cylinders contributes to improved productivity, enhanced control, energy efficiency, and reliable performance in a wide range of industrial applications.

rotary cylinder

Can you explain the purpose and applications of rotary cylinders?

The purpose of rotary cylinders is to generate rotary or swinging motion in machinery and systems. Here’s a detailed explanation:

Purpose:

Rotary cylinders serve as actuators that convert fluid power, either hydraulic or pneumatic, into rotational motion. They are designed to provide controlled and precise rotary movement, allowing machinery and systems to perform various tasks that require rotation, swinging, or indexing motions.

Applications:

Rotary cylinders find applications in a wide range of industries and machinery where rotational movement is required. Some common applications include:

  • Rotary Indexing Tables: Rotary cylinders are used in indexing tables that rotate workpieces or components at specific intervals for assembly, machining, or inspection processes.
  • Robotic Arms and Manipulators: Rotary cylinders enable the rotational movement of robotic arms and manipulators, allowing them to perform tasks such as picking, placing, and positioning objects.
  • Material Handling Equipment: Rotary cylinders are utilized in material handling equipment, such as rotary grippers or clamps, to manipulate and transport objects.
  • Conveyor Systems: Rotary cylinders are employed in conveyor systems to control the rotation or swinging of conveyor belts, facilitating the movement of materials or products.
  • Machine Tools: Rotary cylinders are integrated into machine tools, such as milling machines or lathes, to enable the rotation of workpieces for cutting, shaping, or drilling operations.
  • Packaging Machinery: Rotary cylinders play a crucial role in packaging machinery, allowing for the rotation and positioning of packaging components, sealing mechanisms, or labeling devices.

Advantages:

Rotary cylinders offer several advantages in machinery and industrial systems:

  • Compact Size: Rotary cylinders are generally compact in size, making them suitable for applications where space is limited.
  • High Torque Output: Rotary cylinders can deliver high torque output, enabling the handling of heavy loads or performing tasks that require significant rotational force.
  • Precise Control: Rotary cylinders provide precise control over rotational motion, allowing for accurate positioning and synchronization with other system components.
  • Versatility: Rotary cylinders can be used in both hydraulic and pneumatic systems, offering flexibility in system design and integration.

It’s important to note that the specific selection and application of rotary cylinders may vary depending on the requirements of the machinery or system. Manufacturers’ documentation and guidelines should be consulted for detailed information on the proper use and installation of rotary cylinders.

China Hot selling Best Price Yankee Dryer Cylinder for Paper Mill   vacuum pump for ac	China Hot selling Best Price Yankee Dryer Cylinder for Paper Mill   vacuum pump for ac
editor by CX 2023-10-27