Sludge/Sewage Dewatering Decanter Centrifuge

The solid drum is internally installed with a concentric discharge screw As they rotate in the same direction at a high speed, They have a certain rotational speed difference, which is caused by the driving system and the differential case Suspension enters the internal of the charge screw through the speed pipe and then goes into the drum after being accelerated Under the centrifugal force, solid particles of big density settle on the inwall of the drun, and form a circular layer of cake, which is continuously pushed by the discharge screw to the small end of the drum end then out of it, while the setlled liquid is continuously discharge out of the drum from the vortex finder of the big end of the drum, hence solid-liquid sparation of suspension.

Application Range:

• Municipal Waste Water Treatment
• Industrial Waste Water Treatment
• Water Plant Sludge Treatment

GAS EQUIPMENTS

DeRun strategy partner of gas equipment manufacture had purchased advanced CNC machining centers, CNC lathes, Bending machine and round tube phase intersecting line cutting machine, high precision digital processing equipment for produce gas pressure regulating box, gas regulator pressure device, A-class pressure vessel, safety cut-off valve etc. Currently the gas equipment had sell to CNPC Kunlun, ENN and other gas operators.

Oil and Gas Decanter Centrifuge

DeRun oilfield decanter centrifuge is used for drilling mud system, refineries, oily wastes, tank bottoms, slop oils in oilfield. The efficiency of drilling operations is crucial to profitability. As projects bore deeper on land and move farther out to sea, the risk of downtime increases – along with the consequences and costs. These days, there’s simply no room for mistakes. Staying ahead means looking for a performance partner instead of a supplier, especially when it comes to mixing and maintaining the all-important drilling fluids. DeRun Energy understands not only drilling equipment, but also drilling reality, and works to keep drilling operations problem-free.  

How to Maintain the Screw Conveyor?

Screw conveyor is a conveyor machine, the paddle inside the conveyor move forward the material, for long-term work of the screw conveyor, how to carry out maintenance?

First of all, it is lubrication, all machines are not lack of lubrication, the bearing, gear chain and other components have to join the lubricating oil. Next is check, When the send machine is stop, it is necessary to check the spiral blade wear, if the wear and tear serious, it is necessary for welding. In the transport of materials, do not overload, or the material will not row out, resulting in bending of the screw shaft or damaged the cabinet. In the process of running the screw conveyor, if the noise is too harsh, need to open the lid to check immediately. Be sure to do routine maintenance work, so as to ensure the production efficiency.

Wide Application of Mud Motor

Mud motor, also known as screw drill tools, has been widely used in rock trenchless construction, is the most effective rock stratum trenchless drilling tools. The mud motor is driven by the mud, which converts the slurry pressure into mechanical rotating force, the drive rotor drives the roller to rotate the drill bit.
In the case of linear drilling, the drill rod drives the motor to rotate together; When we need to build ramp, the drill pipe and the motor casing do not rotate, supply the feeding pressure, motor rotor will rotate driven by the hydraulic force of the mud, so as to realize the inclined drilling.

Our company supporting the mud motors can be applied to different specifications and manufacturers of drilling rig, high quality, high stability.

Mud Cleaner Features

Mud cleaner is the second separation equipment of drilling liquid, mud cleaner deals with the mud treated by the first grade separation equipment. The barite will be recovered and will remove the bigger than barite. Then the barite will flow into circulation tanks when the weighted mud passes while the particles that are bigger than mesh will be removed.

Drilling mud equipment includes desander, pressure pump, bottom groove, shale shaker, frame and base. Characterized in that desander and mud provided control valve, chute is provided on the base, located on a shaker chute, cyclone equipped with automatic sand device and the bottom orifice adjusting means. Apply new compact, easy to use, easy to maintain, can quickly remove harmful solids phase drilling fluid, performance to meet high-pressure jet drilling new process requirements.

Decanter Centrifuge Trends

The overall development direction of the decanter centrifuge will be faster and faster and intelligent. The speed controller is the core of the centrifuge controller part, development of high-tech bio-pharmaceutical chemistry need further improvement at the speed centrifuge. The introduction of AC variable speed and AC motor has greatly improved the speed of the centrifuge. Centrifuge microcontroller has overall improvement, development of embedded systems also have the ability to make micro-controller has PC level. Meanwhile centrifuge safety performance has also been further requirements, development of centrifuges will towards the full development of Intelligent.
China centrifuge industry in this century has made remarkable achievements, especially in recent years, accelerated economic development, science and technology is more and more mature, market demand is increasing, the centrifuge industry usher in the golden period of rapid development.

Note The Use of Centrifugal Pump

Centrifugal pump operation should note the following points:
① no water running, do not adjust the suction population to reduce emissions, to prohibit the operation of the low flow.
② monitoring the operation process, completely prevent the packing box leakage, replace the packing box to use new packing;
③ ensure that the mechanical seal fully flushed water, water-cooled bearings prohibit the use of excessive water flow;
④ Do not use too much lubricant;
⑤ According to the recommended cycle to check. Establish operating records, including hours of operation, filler adjustment and replacement, addition of lubricants and other maintenance measures and time.
⑥ The centrifugal pump host 12 meters away from the surface of water can not work.

Introduction to Fishing Tools

Fisheries production tools include a variety of gear, vessels, fishing machinery and other small production tools. The net has four types, such as ground net type, thorn net type, trawl type and foil type. 
In the fishery production, constantly update and improve fishing gear closely around the production. From manual to semi-mechanized, mechanized production, we improve the production tools to adapt to the development of productive forces.

We produce fishing tools include releasing slip spear, internal hook, releasing and circulating overshot, reverse circulation fishing magnet and others.

Drill Bit Selection

The match of drill bit with the drilling tool is one of the factors that can successfully play the role of the screw drilling tool, therefore, when we select the drill bit, we should carefully choose the most appropriate one. Selection should pay attention to the following questions:

1. drilling program and other supporting equipment.

2. the blade structure needed for the formation.

3. the structure of drilling fluid circulation channel;

4. Drilling rate planned in advance.

5. When we use the drill, estimated operation time of drilling tools.

Only these issues are fully considered, we can choose the most suitable bit.

The Principle of Screw Conveyor

Screw conveyor is divided into shaft screw conveyor and screwless screw conveyor according to the form of transport, according to the exterior, divided into U-type screw conveyor and pipe-type screw conveyor. Shaft screw conveyor is suitable for non-sticky dry powder materials and small particles of material. Shaftless screw conveyors are suitable for conveyors made of viscous and easily wound materials.

About the screw conveyor works, rotating spiral vane delivery the material to screw conveyor, friction resistance between the weight of the material and the screw conveyor housing make the material rotate with the screw conveyor blades.  

Drilling Tools Work Principle

Screw drilling tool is one of downhole power drilling tools to transform the liquid pressure energy into mechanical energy, it is a drilling fluid as the driving force. When the mud pump pump out the mud enter into the motor, the motor inlet and outlet form a certain pressure difference, to promote the rotor around the axis of the stator rotation, speed and torque through the universal axis and shaft transmission to the drill, in order to achieve drilling operations. Is the most widely used in a downhole power drill.

Mainly used for directional and horizontal wells of the oblique and torsional azimuth construction, often is used with downhole drilling motor, to achieve the purpose of drilling.