Graphite heat exchanger

Function: Wall - type heat exchange between two media. There are various structural forms, such as: shell - and - tube graphite heat exchanger, round - block - hole graphite heat exchanger; rectangular - block - hole graphite heat exchanger, etc.

Graphite falling - film absorber

Function: Mass and heat transfer. Carry out falling - film absorption on soluble gases and remove the absorption heat at the same time. For example: shell - and - tube graphite falling - film absorber; round - block - hole absorber.

Combustion synthesis device

Function: Combustion or synthesis of combustible substances. It can also complete synthesis, cooling and absorption in one device at the same time; for example: water - jacketed hydrogen chloride synthesis furnace, three - in - one hydrochloric acid synthesis furnace, etc.

 

Graphite sulfuric acid dilution cooler

Function: Dilute (cool) sulfuric acid and other media, and can remove the dilution heat (cooling) in one device at the same time.

 

Graphite tower - type equipment

Function: Mass - transfer equipment for gas - liquid phase or liquid - liquid phase. Including plate towers and packed towers, etc.

 

Graphite mechanical equipment

Function: Equipped with a power device, used for mixing, reacting, concentrating, evaporating, etc. of materials.

 

Graphite - lined equipment

Function: Equipment with graphite rotors or plates as anti - corrosion linings.

Graphite pipelines and pipe fittings

Function: Used for transporting media and connecting equipment.

 

Graphite sealing materials

Function: Used for end - face sealing, packing sealing, flange sealing.

Graphite protective anode in cathodic protection system

Function: Used as an external - current protective anode in the cathodic protection system.

Fluoroplastic magnetic pumps replace dynamic seals with static seals, keeping the flow components completely sealed. This solves the problems of leakage, spouting and dripping that cannot be avoided by mechanical seals in other pumps. The magnetic pump selects engineering plastics, corundum ceramics and stainless steel with corrosion resistance and high strength as manufacturing materials. Therefore, it has good corrosion resistance and can prevent the conveyed medium from being contaminated. The magnetic pump has a compact structure, beautiful appearance, small size, low noise, reliable operation and convenient maintenance.

If no protective measures are taken for the flange of the fluoroplastic magnetic pump and it is exposed to a corrosive environment or contaminated industrial atmosphere, the corrosion rate will be very fast. In addition, due to the complex geometric shape of the flange connection, gap corrosion between the two flange faces and galvanic corrosion between different metals are prone to occur, which will seriously damage the integrity of the pipeline system. So how can flange connections prevent corrosion?

1. Mechanical solutions: mainly by using protective covers and clamps to seal the gaps between flanges and flange faces, usually made of stainless steel or plastic with rubber sealing strips. This protection method is less flexible and requires storage of covers or clamps that match the size of various flanges completely.
2. Thermoplastic solutions: Thermoplastics are essentially a kind of waxy fusible polymer heated at high temperature, which is sprayed onto the surface of the base material through professional thermoplastic equipment. The advantage of this protection method is that it can be remelted and reused, saving costs. However, this method still requires hot work, professional equipment and construction services. Although it can be reused, it is not easy to open and seal during maintenance.
3. Tape or semi-solid anti-corrosion tape solutions: Rolled tapes (such as petrolatum tapes, wax or elastic polymer bandages) are protected by winding on the surface of the base material. Due to the good water resistance of semi-solid polymers, this protection method can provide reliable anti-corrosion protection.
4. Maintenance paint solutions: Maintenance paint is a hard film that can be directly bonded to the base material, generally epoxy or polyurethane coatings. There are many corners and edges on the flange. Due to the edge thinning effect, conventional paint systems are difficult to effectively cover the edges. Although thickening the coating will solve the edge protection problem, it will also seal the fasteners and make them unable to be disassembled during subsequent maintenance. In addition, operating the bolt will damage the coating and must be repainted after maintenance.
5. Polymer sealing bag solutions: The sealing bag can completely wrap the flange. Its composition consists of low-permeability polymers, corrosion inhibitor vapors and desiccants. It is easy to install, but the two ends of the bag are only sealed with tape instead of using a durable and effective mechanical bond. There is a large area of steam space inside the bag, which is easy to gather a lot of water, and the corrosion inhibitor will also be consumed over time.

 

The GH series floating-head tubular graphite heat exchanger, simply known as the floating-head tubular heat exchanger and also referred to as the graphite heat exchanger, is one of the products of Shengshi Datang, a graphite heat exchanger manufacturer with more than twenty years of production experience. Due to the special design of the equipment head and the use of graphite tubulars as the heat exchange medium for the internal tube sheets, it is named the GH series floating-head tubular graphite heat exchanger.

 

This article introduces three major design structures of the GH series floating-head tubular graphite heat exchanger of Shengshi Datang:

 

First, the design of this equipment takes into account the reduction of fluid resistance and is divided into two types: one is an ordinary heat exchanger, and the other is a condenser with a gas-liquid separator for an ordinary heat exchanger.

 

Second, this product is applied in technological transformation projects. The values are calculated based on the middle diameter of φ32/22 graphite tubes. For detailed design parameters (design pressure, design temperature, heat exchange area, etc.), please contact the technicians of Shengshi Datang, the graphite heat exchanger manufacturer.

 

Third, the floating-head tubular heat exchanger is widely used. This equipment is mainly used as a cooler, heater, condenser, and heater, etc. The following picture shows the structure diagram of the GH series floating-head tubular graphite heat exchanger of Shengshi Datang.

If you want to know more about where to find graphite heat exchangers, graphite condensers, graphite falling-film absorbers, graphite heaters and other graphite corrosion-resistant equipment, feel free to follow Anhui Shengshi Datang Chemical Equipment Group Co,Ltd.

 

Knowledge of pumps

 

Magnetic drive pumps and centrifugal pumps are two common types of pumping equipment. They are different in structure, working principle, characteristics of use, and scope of application.

 

Structural difference

Centrifugal pump

Centrifugal pump usually consists of a motor, pump body, impeller, seal and other components, the motor drives the impeller to rotate at high speed, and the liquid is transported by centrifugal force.

Magnetic pump

The magnetic pump cancels the mechanical seal, uses the magnetic vortex generated by the internal and external magnetic to drive the impeller, and the internal and external magnetic rotor transmits power through the magnetic coupler to achieve no leakage transport of the medium.

 

Working principle

Centrifugal pump

Centrifugal pumps use impeller rotation to generate centrifugal force, suction liquid from the inlet and discharge from the outlet.

Magnetic pump

The magnetic pump transmits power through the magnetic coupler, and the magnetic interaction between the inner magnetic cylinder and the outer magnetic cylinder makes the impeller rotate synchronously, and the medium is in a closed state throughout the whole process to prevent potential leakage.

 

Usage characteristics

Centrifugal pump

Centrifugal pumps are simple and compact, suitable for high-flow transportation, and can be manufactured with corrosion-resistant materials, but there may be mechanical seal leakage problems and relatively low efficiency.

Centrifugal pumps are widely used in the transport of clean water, pure water and other liquids, as well as some specially designed centrifugal pumps can transport suspension and bulk solid suspension.

Magnetic pump

The magnetic pump has the advantages of zero leakage, no independent lubrication and cooling water, static seal of the pump shaft, overload protection, etc., but the price is relatively high, and it is not suitable for transporting media containing particles.

The magnetic pump is suitable for transporting flammable, explosive, volatile, toxic and valuable liquids, especially for industries with more stringent safety standards.

 

 

The design of fluoroplastic magnetic pumps not only has the advantages of ordinary magnetic pumps such as compact structure, attractive appearance, small size, low noise, and reliable operation, but also all of their flow components are made of "Plastic King" (fluoroplastic), which currently has the best corrosion resistance performance. The isolation sleeve is made of materials with high mechanical properties, eliminating the magnetic eddy current phenomenon existing in ordinary magnetic pumps. Therefore, fluoroplastic magnetic pumps can convey corrosive media such as acids, alkalis, oxidants, etc. of any concentration (strength) without damage.

Fluoroplastic magnetic pumps adopt a rear-pull structure, which allows a single person to easily perform internal inspections and part replacements without disassembling the pipeline, greatly facilitating daily maintenance and repair work. Proper maintenance is more conducive to extending the service life of the magnetic pump.

 

Details of Reasons Why Fluoroplastic Magnetic Pumps Are Prone to Damage:

1. Pumping Liquids with High Specific Gravity

a. When the specific gravity is too high, the torque of the fluoroplastic magnetic pump is poor, and the power transmission of the ordinary external magnetic coupling is limited.

Solution: Select a suitable fluoroplastic centrifugal pump, which has high efficiency and cost performance, and is equipped with a water-cooled mechanical seal. If you still want to use a fluoroplastic magnetic pump, you need to configure a high-strength magnetic group rotor assembly at a higher price. Or reduce the impeller diameter to reduce the torque.

b. The reason for the pump shaft breakage of the fluoroplastic magnetic pump: when the outlet head is high and the medium specific gravity is large, there is no check valve in the outlet pipeline. When the machine shuts down, the liquid falls at a high speed, and the water hammer effect damages the impeller and the pump shaft, causing the impeller to be displaced. When restarting, the impeller rubs at high speed and melts and adheres.

Solution: Install a check valve more than 1 m above the outlet pipeline to prevent the water hammer effect from damaging the impeller and the pump shaft.

c. When pumping liquids with a relatively large specific gravity and high speed, the torque is insufficient, and the pump shaft of the fluoroplastic magnetic pump breaks.

Solution: For pumps above 15 kW, a control cabinet can be matched. Before starting, start softly. Normally, it starts from 2900 rpm in 5 seconds and is controlled to reach 2900 rpm in 15 seconds, gradually increasing the power to prevent the pressure generated by high-speed rotation from twisting off the fluoroplastic magnetic pump shaft. Or reduce the impeller diameter to reduce the torque.

2. Idling of Fluoroplastic Magnetic Pumps

When the fluoroplastic magnetic pump is started with the motor running and there is no medium liquid to cool the internal environment, it generates high temperature during long-term rotation, melting the fluoroplastic lining, and the impeller is damaged and adhered.

 

Fluoroplastic magnetic pumps are compact in structure, attractive in appearance, small in size, low in noise, reliable in operation, and convenient for use and maintenance. The products are widely used in chemical, acid-making, alkali-making, smelting, rare earth, dyeing, medicine, papermaking, electroplating, pickling, radio, scientific research institutions, national defense industry and other units to pump acids, alkali solutions, oils, rare and precious liquids, toxic liquids, volatile liquids, especially for the pumping of liquids that are prone to leakage, flammable, and explosive. It is more ideal to select a matching explosion-proof motor. Applicable temperature: -20°C to 120°C.

Bonve rotary lobe pumps are widely used in industries for their efficiency and reliability in handling viscous fluids.

However, like any mechanical equipment, they may encounter operational issues over time.

This blog outlines common problems, their root causes, and practical solutions to keep your pump running smoothly.

1.  Pump Fails to Start or Rotate
Possible Causes:
1). Power supply issues: Tripped circuit breakers, blown fuses, or disconnected wiring.
2). Motor failure: Burnt motor windings or damaged bearings.
3). Mechanical jams: Rotor blockage due to debris or solidified media.

Solutions:
1). Check electrical connections, reset breakers, and replace fuses.
2). Test the motor for faults and replace damaged components.
3). Clean the rotor chamber and ensure no foreign particles are obstructing movement.

2.  Low Flow Rate or Pressure
Possible Causes:

1). Incorrect rotation direction: Motor wiring reversed, causing reverse flow.

2). Clogged pipelines or valves: Blockages in inlet/outlet pipes or partially closed valves.

3). Worn rotors or chambers: Erosion from abrasive media reduces pumping efficiency.

4). High fluid viscosity: Exceeds the pump’s design capacity, slowing flow.

Solutions:
1). Verify motor rotation aligns with directional markings and adjust wiring if needed.

2). Clean filters, open valves fully, and clear pipeline obstructions.

3). Replace worn rotors or liners and select a pump suited for higher viscosities.

3.  Excessive Noise or Vibration
Possible Causes:
1). Bearing wear: Lack of lubrication or contamination causes friction.
2). Misaligned couplings: Poor alignment between the pump and motor shafts.
3). Cavitation: Air ingress or low inlet pressure creates bubbles in the fluid.

Solutions:
1). Lubricate or replace bearings regularly.
2). Re-align couplings and ensure the pump-motor assembly is level.
3). Check for air leaks in suction lines and prime the pump properly.

4.  Leakage at Seals or Joints
Possible Causes:
1). Worn mechanical seals: Aging or abrasive media damages seal surfaces.
2). Loose fittings: Improperly tightened bolts or degraded O-rings.

Solutions:
1). Replace mechanical seals or O-rings and ensure correct installation.
2). Tighten connections and inspect pipelines for cracks.

5.  Overheating or High Motor Load
Possible Causes:
1). Excessive discharge pressure: Overloading due to system resistance.
2). High fluid temperature: Inadequate cooling or ambient heat.
3). Internal friction: Rotor scraping against the chamber.

Solutions:
1). Reduce backpressure by enlarging discharge pipes or removing restrictions.
2). Install cooling systems or switch to heat-resistant materials.
3). Adjust rotor clearance or replace damaged components.

Preventive Maintenance Tips
To minimize failures, adopt these practices:
Regular inspections: Check seals, bearings, and alignment monthly.
Lubrication: Use high-quality grease for bearings and gears.

Proper shutdown: Drain and clean the pump after use to prevent media hardening.
Correct installation: Ensure inlet/outlet orientations match design specifications.

Conclusion

Understanding these common issues and their fixes can significantly extend the lifespan of your cam rotor pump.

Always prioritize preventive maintenance and consult professional technicians for complex repairs.

For specialized support, partner with trusted manufacturers to ensure optimal performance.

For more detailed guides, explore our technical resources or contact our team!

In the manufacturing industry, CNC (Computer Numerical Control) machines have become essential tools for improving production efficiency, ensuring precision, and reducing labor costs. For B2B clients, selecting the right CNC equipment is a critical step in optimizing production processes. This article will focus on two popular types of CNC machines—Automatic CNC Bending Centers and CNC Punch Presses—to help you make an informed decision based on your business needs.

 

The Advantages of Automatic CNC Bending Centers

Automatic CNC bending centers are ideal for the metal fabrication industry, particularly for producing complex parts that require high-precision bending. These machines excel in automating repetitive tasks, significantly reducing manual intervention and boosting production efficiency. For instance, automatic CNC bending centers can quickly handle large volumes of metal sheet bending while maintaining consistent dimensions and angles for each product. Industries such as automotive and aerospace, which demand high precision and repeatability, greatly benefit from these advanced machines.

 

The Versatility of CNC Punch Presses

CNC punch presses are renowned for their versatility and efficiency. They can perform a variety of operations, including punching, cutting, and forming, by simply changing the tooling. This makes them an excellent choice for businesses that need to produce a wide range of products, such as electronic enclosures or architectural metal components. Compared to traditional mechanical punch presses, CNC punch presses offer higher precision and flexibility, making them suitable for customized production requirements.

 

Matching CNC Machines to Your Production Needs

When selecting a CNC machine, it’s crucial to evaluate your specific production requirements. If your business primarily involves bending and shaping metal sheets, an automatic CNC bending center may be the better option. On the other hand, if you need to handle diverse shapes and sizes, a CNC punch press might be more suitable. Additionally, factors such as production capacity, precision requirements, and budget should also be considered to ensure the chosen machine aligns with your business goals.

 

Enhancing Productivity Through Automation

Both automatic CNC bending centers and CNC punch presses leverage automation to enhance productivity. Automated CNC machines minimize human error, shorten production cycles, and reduce labor costs. For B2B clients looking to stay competitive, investing in automated CNC equipment is a strategic move toward achieving scalable and efficient production.

 

The Importance of Maintenance and Support

Beyond the machine’s performance, it’s essential to consider after-sales service and technical support when purchasing CNC equipment. Reputable suppliers offer comprehensive training, regular maintenance, and responsive technical assistance to ensure the machine operates smoothly over the long term. This is particularly important for minimizing downtime and maintaining consistent production output.

 

The Future: Smart CNC Machines

As Industry 4.0 continues to evolve, smart CNC machines are becoming a significant trend in the manufacturing sector. Future automatic CNC bending centers and CNC punch presses will integrate IoT (Internet of Things) technology, enabling remote monitoring and data analysis to further improve efficiency and product quality. For B2B clients, adopting smart CNC machines early can provide a competitive edge in an increasingly digitalized market.

Pipe making machines are essential tools in modern manufacturing, particularly for industries that require the production of high-quality pipes for various applications. Whether it’s for construction, water systems, or industrial projects, the ability to produce pipes efficiently and accurately is crucial. In this blog, we will explore how a pipe making machine works and why it is a critical component in the pipe production industry.

 

What is a Pipe Making Machine?

It is a versatile piece of equipment designed for the manufacturing of pipes from a variety of materials, such as steel, stainless steel, and other metals. These machines are used to produce pipes in different sizes, shapes, and specifications, making them indispensable in industries like construction, plumbing, and oil & gas.

The pipe manufacturing process involves several stages, and each stage requires precise machinery to ensure the highest quality of pipes. From the initial material input to the final output, a pipe making machine guarantees the efficiency and consistency of the production process.

 

The Stages of Pipe Production

1. Material Feeding: The process begins with feeding raw materials, usually in the form of coils, into the machine. These coils are typically made of metal sheets, which will be formed into pipes. The machine automatically feeds the material into the forming section.

2. Forming: In this stage, the metal sheet is continuously bent and rolled to form a pipe shape. This is achieved through a series of rollers and presses that carefully shape the material without damaging its integrity. It ensures that the pipe maintains a consistent diameter and smooth surface throughout the forming process.

3. Welding: After the pipe has been formed, the next critical step is welding. In many cases, a pipe welding machine is used to join the edges of the metal sheet together, creating a continuous pipe. These machines utilize high-frequency welding or TIG (Tungsten Inert Gas) welding techniques to ensure strong and durable welds. The pipe welding machine plays a vital role in maintaining the structural integrity of the pipe and ensuring it meets the required standards.

4. Sizing and Cutting: Once the pipe is welded, it passes through sizing rollers that help shape the pipe to its exact dimensions. After sizing, the pipe is cut into the required lengths, depending on the customer’s specifications. The cutting process can be done either manually or automatically, depending on the model of the machine.

5. Finishing: Finally, the pipe undergoes a finishing process that may include polishing, coating, and quality inspection. These final touches ensure that the pipe meets all industry standards and is free from defects.

 

Key Benefits of Using a Pipe Making Machine

1. High Efficiency: One of the major advantages of using a pipe making machine is its efficiency. The entire production process—from feeding raw materials to the final output—is automated, allowing manufacturers to produce large quantities of pipes in a short amount of time.

2. Customization: Pipe Making Machines can be customized to produce pipes of various diameters, lengths, and thicknesses, catering to a wide range of industry needs. Whether you require small-diameter pipes for plumbing or large-diameter pipes for industrial projects, these machines can handle it all.

3. Consistency and Precision: With advanced technology, pipe making machine ensure that each pipe is produced to precise specifications. This consistency in size, shape, and quality is essential for industries that rely on accurate pipe dimensions.

4. Cost-Effective: While the initial investment in a pipe making machine may be high, the long-term savings are substantial. Automation reduces the need for manual labor and minimizes the risk of errors, resulting in reduced production costs and increased profitability.

 

Applications of Pipe Making Machines

The versatility of this machine allows them to be used across a variety of industries, including:

• Construction: For producing pipes used in plumbing, drainage, and structural applications.
• Oil and Gas: Manufacturing high-quality pipes for transporting oil and gas under high pressure.
• Water Systems: For producing pipes used in water distribution and treatment systems.
• Automotive: Producing pipes for exhaust systems, fuel lines, and other vehicle components.

 

A pipe making machine is a vital piece of equipment for the efficient and accurate production of pipes across a wide range of industries. By understanding how these machines work and the benefits they offer, businesses can make informed decisions when it comes to choosing the right equipment for their pipe manufacturing needs. Whether you're looking to increase production efficiency or improve the quality of your pipes, investing in a pipe making machine can take your manufacturing capabilities to the next level.

 

If you're interested in learning more about how our pipe making machine can benefit your business, feel free to contact us for more information.

In the field of sheet metal processing, a CNC bending center with excellent performance is crucial. The ACU CNC bending center has attracted much attention, so can it meet the diverse needs of users?

 

For many users, processing accuracy is the primary consideration. This automatic flexible bending center adopts an advanced CNC system, combined with high-precision transmission components such as precision ball screws and linear guides, to ensure precise control of bending angles and sizes. Whether it is complex sheet metal processing or industries with extremely high precision requirements, it can provide reliable precision guarantees.

The stability of the equipment is directly related to production efficiency and product quality. The ACU CNC bending center has a sturdy body structure, which is carefully designed and manufactured with excellent vibration resistance and stability. During long-term continuous operation, it can still maintain a stable operating state, reduce downtime caused by equipment failure, and improve production efficiency.

 

Convenience of operation is also a focus of users. Our CNC bending center is equipped with a user-friendly operation interface, which is easy to use. Even novice operators can familiarize themselves with the operation process in a short time and quickly perform programming and processing. In addition, the equipment also has intelligent auxiliary functions, such as automatic tool setting and parameter setting, which further improve the convenience of operation.

 

In terms of processing efficiency, our CNC bending center also performs well. The high bending speed and fast positioning system can greatly shorten the processing cycle. At the same time, the equipment supports multiple processing modes and can be flexibly switched according to different workpiece requirements to meet diverse production needs.

 

The maintenance cost of the equipment is also a factor that users need to consider. The ACU CNC bending center uses high-quality components and has a long service life. In addition, the maintenance of the equipment is relatively simple, easy to perform daily maintenance and troubleshooting, and reduces maintenance costs.

 

If you are looking for a CNC bending center that can meet high precision, high stability, easy operation, high efficiency and low maintenance cost, the ACU CNC bending center may be your ideal choice. Since 2007, we have been experts in manufacturing roll forming systems with high-quality CNC machines and other machinery. If you have any questions or needs, please feel free to contact us at sale@acusheetmetalmachine.com!