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The application prospect of tubular centrifuges in bacterial cell separation is relatively broad, with the following advantages and development trends:AdvantagesGood separation effect: It can generate a strong centrifugal force field, which has a remarkable separation effect on bacteria in fermentation broth with low concentration, fine solid particles, and small density difference between solid and liquid. It can obtain wet bacteria with low water content, tight and dense texture, and the centrifugal supernatant can reach a high degree of clarity. For example, it performs excellently in the separation of Escherichia coli, lactic acid bacteria, etc.

How Does a Decanter Centrifuge Work?A decanter centrifuge works by exerting a high centrifugal force on the slurry of solids and liquids. A rotating conveyor pushes out the heavier solids that settle on the decanter wall. The lighter liquid exits the decanter through the liquid outlet port on the other end of the bowl.Continuous process decanter centrifuges can process a large volume of fluids with sludge. Centrifugal force (upwards of 3,000 g) causes graded settling and separates the fluid from small sediment (50µ).The rotating bowl has a concentric scroll that rotates at a differential speed to that of the decanter bowl. This speed differential allows the scroll to transfer the separated sludge.

Definition and application fields of bacterial tubular centrifugeBacterial tube centrifuge is a device specifically designed for the separation of bacterial cells and bacteria in the biological industry. It has been uniquely designed based on the original tube centrifuge, making it more suitable for the separation of bacterial cells. This device is widely used in various fields such as food, chemical, petroleum, water treatment, and pharmaceuticals

A tube centrifuge consists of a body, transmission device, drum, collection plate, and inlet bearing seat. The upper part of the drum is a flexible spindle, and the lower part is a damping floating bearing. The main shaft is connected to the passive wheels through a connecting seat buffer. The motor transmits power to the driven wheel through a conveyor belt and tension wheel, causing the drum to rotate at high speed around its own axis, forming a strong centrifugal force field. The material is injected from the bottom inlet, and centrifugal force forces the liquid to flow upward along the inner wall of the drum, resulting in layering due to the density differences of different components of the liquid. Tube centrifuge is currently an ideal centrifugal separation equipment. Tube centrifuge is mainly used for liquid-solid, liquid-liquid or liquid-liquid solid three-phase separation. Its smallest separation particle size is 1 micron, which is particularly suitable for extraction, concentration, and clarification of liquid-solid phase differences, small solid phase particle size, low content, and strong corrosiveness of the medium.

There are various types of disc centrifuges.1. According to the purpose of separation, it can be divided into laboratory disc centrifuges and industrial disc centrifuges.2. Divided by speed: low-speed disc centrifuge and high-speed disc centrifuge.3. According to the separation method, it can be divided into production type disc centrifuge and preparation type disc centrifuge.4. According to the slag discharge method, it can be divided into automatic slag discharge disc centrifuge and manual slag discharge disc centrifuge.5. According to the continuity of separation, it can be divided into continuous disc centrifuge and intermittent disc centrifuge.6. According to production scale, it can be divided into small disc centrifuges and large disc centrifuges.7. According to the number of separated phases, it can be divided into two-phase disc centrifuge (two-phase disc centrifuge) and three-phase disc centrifuge.

Disc centrifuge is a type of vertical centrifuge, with a drum mounted on the upper end of a vertical shaft and driven by an electric motor through a transmission device to rotate at high speed. There is a set of disk shaped components nested together inside the drum - discs.

As a highly precise equipment, it is essential to grasp the selection criteria when choosing a centrifuge. Here we introduce to everyoneThe factors to consider when choosing a centrifuge are as follows.When choosing a centrifuge, the main factors to consider include the following: (1) density, viscosity, and surface tension of the liquid phase materialpower. (2) The separation of materials mainly involves solid or liquid phase materials. (3) Particle size, density, and hardness of solid materialsDegree. (4) The flammability and explosiveness of materials. (5) Affinity, concentration, and all charge properties (positive charge) of solid and liquid phase materials(6) Sludge properties: The higher the organic matter content and oil content of the sludge, the worse the dewatering performance. (7) The material'srate of recovery. (8) The volatility of materials. (9) The corrosiveness of materials. (10) Speed difference: Its size not only affects processing energyStrength also affects the processing effect. (11) When solid materials are crystalline products, it is required that the degree of crystal damage during separation be lowThere are special requirements for the structure and unloading methods of the equipment. (12) Sludge treatment capacity, for a certain specification of centrifuge, outputThe water efficiency changes with the increase of sludge treatment capacity. In order to achieve the expected goal, select the appropriate machine with the appropriate treatment capacity based on the sludge volumeType is very important.As long as you can grasp these 12 factors when choosing a centrifuge, you can choose a device that is more suitable for yourself,It also plays an important role in the development of enterprises

The horizontal screw centrifuge is suitable for solid-liquid separation treatment of sewage, sludge and other solid and liquid in various industries. It is used in the treatment of papermaking wastewaterIt also played a significant role.During papermaking operations, a large amount of wastewater is discharged from both pulp and paper making. The wastewater generated from pulp production is severely polluted. The wastewater discharged during pulp washing isBlack brown, also known as black water, has a high concentration of pollutants with a BOD of 5-40g/L. It contains a large amount of fiber, inorganic salts, andPigments. The wastewater discharged from the bleaching process also contains a large amount of acidic and alkaline substances. The wastewater discharged from the paper machine is called white water, which containsA large amount of fibers and fillers and adhesives added during the production process.

Attention to maintenance of horizontal spiral centrifuge

Adjustment of the drum speed of the horizontal spiral decanter centrifugeThe spiral decanter centrifuge should use an involute planetary gear differential, so this reducer has a large transmission ratio and high accuracy. On the whole machine, there is a mechanical and electrical dual overload protection device, so it is safe and reliable to use. If the main motor adopts a power frequency speed regulation type, coupled with a hydraulic coupling, it can ensure smooth operation of the motor. The part in contact with the material is made of stainless steel, which has excellent corrosion resistance. At the same time, the drum speed of the horizontal screw centrifuge can also be adjusted.

The horizontal spiral centrifuge is mainly composed of a drum, a screw, a differential system, a liquid level baffle, a drive system, and a control system. A decanter centrifuge utilizes the density difference between solid and liquid phases to accelerate the settling velocity of solid particles under the action of centrifugal force, thereby achieving solid-liquid separation. The specific separation process is that the sludge and flocculant solution are sent into the mixing chamber of the drum through the inlet pipeline, where they are mixed and flocculated (if they are added before the sludge pump or after the pump pipeline, the flocculation reaction has been carried out in advance). Due to the high-speed rotation and frictional resistance of the rotor (spiral and drum), the sludge is accelerated inside the rotor and forms a cylindrical liquid ring layer (liquid ring area). Under the action of centrifugal force, solid particles with high specific gravity settle on the inner wall of the drum to form a mud layer (solid ring layer). Then, the relative velocity difference between the spiral and the drum is used to push the solid phase towards the cone end of the drum. After pushing out the liquid surface (shore area or drying area), the sludge is dehydrated and dried, pushed towards the slag discharge outlet, and the supernatant is discharged from the large end of the drum, achieving solid-liquid separation. The sentence is:. With continuous use, you may ask how to improve the efficiency of the horizontal spiral centrifuge? 

A horizontal spiral centrifuge is a settling equipment that operates continuously and discharges materials horizontally. The drum and the screw rotate at a certain speed difference in the same direction and high speed. The material is continuously introduced into the inner cylinder of the conveying screw through the feeding pipe, accelerated and enters the drum. Under the action of the centrifugal force field, heavier solid substances deposit on the drum wall to form a sediment layer. The feeding spiral continuously pushes the deposited solid phase to the cone end of the drum and discharges it outside the machine through the slag discharge outlet. The lighter liquid phase forms an inner liquid ring, which continuously overflows from the large end overflow port of the drum and is discharged outside the machine through the discharge port.