Tag Archives: Decanter centrifuge

Trouble Shooting Of Decanter Centrifuge Gear Box

Common failures of Decanter centrifuge gear boxes include tooth surface wear, tooth surface gluing and abrasions, tooth surface contact fatigue, bending fatigue and broken teeth. The causes are manufacturing errors, poor assembly, poor lubrication, overload, and operational errors. Due to the characteristics of the structure and working principle of the gear, its vibration signal is very complicated, and the vibration fault diagnosis of it needs to be analyzed in both the time domain and the frequency domain. Whether the gear is in a normal or abnormal state, the frequency of gear meshing stiffness always exists.

Therefore, the gearbox should be diagnosed based on the gearing frequency component of the gear. Due to the complexity of the gear signal, the fault has many effects on the vibration signal, especially due to the effect of amplitude modulation and frequency modulation, there are many sideband structures on the vibration spectrum of the gear, which requires specific analysis during the analysis and diagnosis Components to achieve accurate diagnosis of gearbox faults.

The characteristic frequency of the Decanter centrifuge gear box failure is as follows:

1. The normal frequency spectrum shows the 1X and meshing frequencies of all the rotating shafts. There are speed sidebands on both sides of the gear meshing frequency, and the peak value is small.

2. Gear wear. The natural frequency of the gear appears, and there is a speed sideband of the shaft where the worn gear is located. When the wear is obvious, a higher peak sideband will appear near the meshing frequency.

3. Decanter centrifuge gear eccentricity. There is a sideband of higher amplitude near the meshing frequency, indicating that the gear is eccentric or the shaft is not parallel, and the peak of the meshing frequency increases with the increase of the load.

4. The decanter centrifuge gears are misaligned. The vibration of the second or higher harmonics of the meshing frequency is almost always excited, and the peak value at the 2X or 3X meshing frequency spectrum line is large, and there is a side frequency of the rotation frequency interval.

GN Separation is to Kick off Its Innovative 3-phase Decanter Centrifuge at CIPPE

At the upcoming China International Petroleum and Petrochemical Technology and Equipment Exhibition (CIPPE), GN separation, a professional separation technology provider, will showcase its innovative 3-phase decanter centrifuge.

Show Name: CIPPE (short for China International Petroleum & Petrochemical Technology and Equipment Exhibition)

Date:March 25~27, 2024

Venue:New China International Exhibition Center, Beijing

GN Booth No.: E2168

GN 3-phase decanter centrifuge has attracted the attention of many industries with its excellent performance and unique design. Its bowl are made of duplex stainless steel 2205, and the use of centrifugal casting technology ensures the compactness of the material composition, thus achieving excellent dynamic balance performance, which is crucial for high-speed and stable operation. At the same time, the components that directly contact the processing materials are made of 316L stainless steel, ensuring the durability and corrosion resistance of the machine.

The design of this centrifuge is to efficiently separate heavy liquid phase, light liquid phase and solid residue. It uses the density difference between different materials to achieve 3-phase separation. This function benefits from the diversified centrifugal force generated by the machine, making the separation of various components more precise. The centripetal pump design adopted by the centrifuge achieves precise control over the boundaries of different liquid phases within the device, thereby meeting various separation requirements and ensuring clarity after fluid separation.

It is worth mentioning that the GN 3-phase decanter centrifuge is also equipped with a frequency conversion control cabinet, which can achieve precise control of the centrifuge’s rotational speed and feed rate by adjusting the speeds of the main motor, auxiliary motor, and feed pump. This advanced feature gives the machine high flexibility, allowing it to adapt to various complex operating scenarios.

In terms of application fields, 3-phase decanter centrifuges have broad application prospects in oil sludge treatment systems, edible oil extraction, and kitchen waste management. GN Separation is constantly meeting the growing needs of the industry by relentlessly pursuing innovative technologies and product quality.

We sincerely invite all enterprises and individuals interested in separation technology to visit the GN booth during the CIPPE exhibition to experience the powerful functions of the 3-phase decanter centrifuge and discuss future cooperation opportunities. We believe that through this exhibition, GN will continue to consolidate its leading position in the field of separation technology and contribute more to the sustainable development of the industry.

GN Separation will attend IE Expo China 2024 in Shanghai

GN Separation is excited to announce its participation in the IE Expo in Shanghai next month, and cordially invites friends, customers, and industry colleagues to visit the GN booth to explore GN’s innovative products and engage in technical and commercial discussions.

Show Details:

  • Show Name: IE Expo China 2024
  • Location: Shanghai New International Expo Centre (SNIEC)
  • Expo Date: April 18~20, 2024
  • GN Booth: N4-H46\I46 (Hall 4)

During the expo, GN will showcase some of its main industrial separation and conveying equipment. Here’s a brief overview of GN’s featured products:

Sludge Dewatering Centrifuge:

GN will exhibit the GNLW554 model with a 22-inch bowldewatering decanter centrifuge. This high-speed rotating bowl utilizes centrifugal force to efficiently separate solids and liquids based on their different densities. Additionally, GN will showcase the GNLWS364 model, a 3-phase decanter centrifuge suitable for separating light liquid, heavy liquid, and solids. To enhance durability, GN utilizes tungsten carbide plates and bushings for screw blade and solids discharging port protection, thereby extending the machine’s service life.

Disc Stack Separator:

The disc stack separator, also known as a disc stack centrifuge, operates at higher speeds compared to decanter centrifuges. It is typically installed after the decanter centrifuge to separate ultra-fine solids that cannot be removed by the decanter. With the ability to generate higher centrifugal force, the disc stack separator is ideal for slurry clarifying and oil-water separation. GN emphasizes the importance of maintaining slurry feed with solids concentrations below 5% to prevent blockages and ensure smooth operation.

Solid Vacuum Pump:

 

GN will showcase two models of solid vacuum pump: GNSP40 and GNSP10, each offering different capacities and designs. All models feature a compact structure for easy onsite layout, with the GNSP10 model equipped with wheels for convenient mobility. These pumps operate automatically with preset suction and discharging times, while the GNSP40 model also offers manual operation. Suitable for various material transfers, including high fluidity liquids, low fluidity slurries, and solid powders and gravels, the solid vacuum pump is fully pneumatic-driven for efficient operation.

GN eagerly anticipates meeting you at IE expo China 2024 and looks forward to fruitful discussions and collaborations.

 

GN SEPARATION WILL ATTEND THE ASIA WATER 2024 EXHIBITION IN APRIL HELD IN MALAYSIA

GN Separation would like to invite all of our clients and friends to join ASIA WATER 2024 Exhibition In April held In Malaysia.

Expo. Website https://www.asiawater.org

Expo. Name: ASIA WATER 2024

Add.: Kuala Lumpur Convention Centre

GN Booth No.: Hall 6, B602

Expo Time: April 23-25th, 2024

ASIAWATER 2024, the region’s leading water & wastewater platform for developing Asia, will return at the heart of modern Malaysia’s city centre, the Kuala Lumpur Convention Centre, from the 23 – 25 April 2024, with the central theme “Water and Climate Change: Innovation for Resilience”.

During this exhibition, GN will show the following equipment:

 

Decanter centrifuge 

Decanter centrifuge  is a widely used equipment in the field of industrial solid-liquid separation. According to the characteristics of different materials in different industries, GN decanter centrifuge is divided into dewatering, separation, and clarifying decanter centrifuge. With centripetal pump technology, GN decanter centrifuge can also realize the 3-phase separation of liquid, liquid, and solids. GN will bring 2-phase decanter centrifuge GNLW223 to the exhibition.

GN Solids Vacuum Pump  

If you are having a headache when moving high viscosity drilling cuttings, then GN Solids Vacuum Pump is the best choice. GN has built 3 different models: GNSP-10B, GNSP-20B and GNSP-40B. We will show GNSP-10B at the exhibition.

Sludge dewatering screw press

GN screw press sludge dewatering machine is a kind of economic and environmental friendly sludge dewatering equipment. It is a new type of sludge extrusion dewatering equipment by using the principle of screw extrusion, through the strong squeezing force generated by the change of screw diameter and screw pitch, and the tiny gap between the floating ring and the fixed ring, to realize solid-liquid separation.

All of the clients of GN are welcome to visit the ASIA WATER 2024 EXHIBITION. We hope we will have a fruitful meeting and a happy Cooper with you. If you need any support about the operation and maintenance of GN’s equipment, please feel free to contact GN company for our engineers’ best experience and knowledge in the relevant industry. We will do our best to assist your project because just in this way we can establish a stable and long term cooperation. And we can provide on-line support and site instruction for specific situation if needed.