The Two-Stage Piston Pushing Centrifuge

Product Description

Overview and scope of application of centrifuge
The two-stage piston pushing centrifuge is a continuous operation filtration centrifuge
Mind machine, it can automatically complete all operations at full speed
Process operations such as feeding, washing, separation, and unloading.
Double stage piston pushing centrifuge is suitable for separating medium and coarse particles
Suspension of granular crystalline materials, suitable for separating solid phase content
35-90%, solid phase average particle size ≥ 0.08mm, temperature
A suspension that does not exceed 80 ºC and requires a stable supply concentration
Feed evenly. Especially suitable for materials that need to be washed inside the machine
Separate. This machine has automatic continuous operation, continuous slag discharge, and production
High production capacity, low moisture content in filter cake, low power consumption, and Less crystal breakage, compact structure, good corrosion resistance, and smooth transportation
Advantages such as stability and low vibration.
Working principle of centrifuge
After the inner and outer drums rotate at full speed, they will be separated
The suspended liquid is continuously introduced into the external rotation through the feeding tube
On the circular fabric disc on the drum, under the action of centrifugal force,
The suspension is evenly thrown along the circumference onto the sieve installed in the inner drum
Online. Most of the liquid phase passes through the gaps of the sieve and the inner drum wall
The holes are thrown out of the drum, while solid particles are trapped in the sieve
A filter residue layer is formed on top, and when the inner drum returns, it is pushed through the material tray
Move the inner drum filter residue layer forward along the axial direction for a certain distance,
When the inner drum is in progress, the vacant mesh forms a new filter
Slag layer, while the outer end face of the inner drum filters the slag layer along the outer drum
Move forward a certain distance axially, as the inner drum reciprocates
Movement, the inner and outer drum filter layer moves forward in sequence, and
Further dehydration. The final filter residue is continuously pushed out
Drum, enter the aggregate tank. By installing on the outer drum
The scraper unloads the filter residue from the tangential direction through the discharge port of the machine casing
Out of mind. If the filter residue needs to be washed in a centrifuge, wash it
The liquid is continuously sprayed through a washing tube or other flushing equipment
Wash on the filter residue layer, and separate the mother liquor along with the washing
The liquid is collected inside the casing and discharged through the drain port. If necessary
At this time, the mother liquor and washing solution can be discharged separately.
Brief description of centrifuge structure
The two-stage piston pushing centrifuge is mainly composed of a hydraulic device (oil supply station) and a pushing device
Mechanism (composite oil cylinder), oil cooler, machine base (oil tank), bearing chamber combination
Machine casing, inner and outer drums, screen mesh, aggregate tank, door cover, feed pipe, washing
Composed of pipes, main and auxiliary motors, electrical control cabinets, etc.
Hydraulic device: The hydraulic device consists of a pump base, an oil pump, an overflow valve, and an overflow valve
Composed of seat, oil pump motor, pressure hose, pressure gauge, thermometer, etc.
Pushing mechanism: The pushing mechanism consists of a combination of pressure cylinders, pistons, and slide valves
Composed of pilot valves, pulleys, etc. Under the action of pressure oil, push the piston
Reciprocating motion drives the inner drum to perform reciprocating motion together, thereby achieving
Reciprocating material pushing function.
Oil cooler: The oil cooler has a bent pipe type located inside the oil storage tank of the machine base, or is centralized
Two forms of cooling are located above the machine base to ensure that the temperature of the pressure oil remains constant
Within the scope.
Machine base combination (oil tank): The machine base is used to support the rotating body, pushing mechanism, and hydraulic system
Device and transmission system. Its bottom also serves as a fuel storage tank. Equipped with oil injection holes and oil inlet
Pipe, oil drain hole, and oil label.
Bearing chamber combination: The bearing chamber combination consists of a bearing seat, a main shaft, a push rod, and a sliding shaft
Composed of bearing and roller bearings. The spindle rotates inside two heavy-duty bearings, and the push rod rotates inside
The two sliding bearings inside the spindle perform reciprocating motion, and the lubrication of all bearings is
It is accomplished through the pressure oil provided by the hydraulic system.
Shell combination: The shell is made of stainless steel welded parts, and there are slag discharge holes and drainage holes on the shell,
And equipped with a flushing pipe, the drum rotates inside the casing to ensure safe operation.
Internal and external drum: Both the internal and external drum walls are equipped with filtering holes for fluid flow. abduction
The drum is connected to the main shaft (hollow shaft) and rotates together with the main shaft. External drum rotation through support
The rod is also connected to the pushing plate in the inner drum, thereby connecting the pushing plate with the outer drum
Synchronous rotation. The inner drum is connected to the push rod and linked with the outer drum, following the outside
The drum rotates synchronously while also reciprocating with the push rod.
Screen: The screen is a plate screen composed of slotted screen pieces.
Aggregate tank: The aggregate tank is located at the front end of the outer drum of the centrifuge and is fixed to the casing
The outlet of the aggregate tank is connected to the slag discharge hole on the casing. Launched for external transfer
The filter residue from the drum enters the aggregate tank. Use a scraper to discharge the filter residue from the aggregate in the tangential direction
The tank is then discharged outside the centrifuge through the slag discharge port of the casing.
Door cover: The front end of the shell is equipped with a door cover, which is fitted with a feeding tube and a washing tube.
Feed tube: The material enters the centrifuge through the feed tube and passes through the fabric tray to collect the material
The material is evenly distributed on the inner drum screen.
Washing tube: The washing tube is installed on the door cover, with one end extending into the drum for washing liquid
Enter the drum through the washing tube to rinse the material.
Main motor: The main motor drives the rotating body to rotate through a V-belt
The machine is installed on the base adjustment plate, and the tightness of the belt is determined by the bolts of the drag plate
Adjusted.
Electrical control cabinet: The electrical control cabinet is a specialized electrical equipment that comes with the main power supply
Both the engine and oil pump motors are controlled by direct starting. Simultaneously equipped with power supply
Monitoring, starting current and operating current display, as well as overload, short circuit and other protections Device.
Main performance characteristics of centrifuge
This type of centrifuge has advanced, reliable, safe, and efficient technical performance. centrifuge
Can operate safely and reliably in acidic and alkaline suspension separation environments,
Low failure rate, easy maintenance, low operating cost, and long service life.  
This type of centrifuge is characterized by high speed, high separation factor, high output, low energy consumption, and separation
The separation effect is good, and the moisture content of the separated filter cake can reach 2-5% (sodium chloride).  
This type of centrifuge has low vibration, low noise, and strong load-bearing capacity. All its bearings are made of
Using import bearings, high precision and strong load-bearing capacity.  
The entire operation process of this type of centrifuge is carried out in a closed state, which affects the environment
No pollution in the environment.  
The feeding frequency of this type of centrifuge can be infinitely adjusted within the range of 30-70 times/min
It is convenient and easy to adjust, and can be selected according to working conditions and separation requirements
The most suitable number of times to push materials.  
This type of centrifuge is equipped with a washing tube, which can connect the filter cake layer during continuous separation process
Continue water spray washing to degrade residual acids and other impurities, in order to achieve the most ideal separation
Away from the effect.  
The main components of this type of centrifuge are the inner and outer drums and spindle, push rod, oil cylinder, and movable shaft
Precision machining of plugs, bearing chambers, etc., strictly ensuring dimensional accuracy and positional precision
Degree. Precise dynamic balancing of inner and outer drums and feeding trays ensures precise operation of the centrifuge
Ensure the stability of the centrifuge during high-speed operation.  
The key parts of this type of centrifuge are corrosion-resistant and durable. The service life of the sieve is generally one
Over 8 years of service life for the inner and outer drum, casing, and door cover.  
The main bearings of this type of centrifuge are lubricated by hydraulic working pressure oil immersion 
Application conditions and adaptability adjustment of centrifuge
The basic application conditions of the two-stage piston pushing centrifuge are:
The separated material is a solid-liquid mixture such as a suspension, which is not a floating turbidity;  
Suspension concentration ≥ 35%
The average particle size of solid phase is ≥ 0.08mm;
Separation process operating condition temperature ≤ 80 ºC
Appropriate viscosity;  
Separation purpose: solid-liquid separation to obtain the lowest possible solid phase moisture content and liquid phase
Solid content.  
Different separation materials have different separation characteristics. Even for the same type of division
Different materials, process methods, and operating conditions also have different distinctions
Away from characteristics. The quality of material separation characteristics will directly affect the centrifuge
The quality of separation effect and the size of processing capacity can be achieved through the following methods
Adjust the separation characteristics of separated materials:
Adjust the suspension concentration through pre concentration measures;  
Adjust the preliminary process and increase the particle size of solid phase materials;  
Adjust the operating temperature to improve the viscosity of the suspension.  
For some difficult to separate materials, in addition to taking corresponding measures for the separated materials themselves
In addition to adjusting measures, corresponding adjustments and improvements can also be made to the centrifuge;  
Adjust the drum speed
Adjust the frequency of material pushing
Adjust the gap and porosity of the screen mesh
The adjustment of centrifuge technical parameters, except for the number of pushing times, can be adjusted on the separation site
All other details must be determined before the production of centrifuge products. Additionally, needles
Different materials with different corrosivity for separation must have different anti-corrosion abilities
Match. Therefore, when customers inquire, please provide detailed information on the characteristics of the separated materials
Number, operating conditions, and separation requirements, etc.
Centrifuge Quality Assurance
Product Quality Assurance: Product design, manufacturing, and inspection shall be carried out in accordance with technical standards such as JB/T447 "Piston Push Centrifuge" and quality management systems such as GB/T19001 idt ISO9001
Standardize to ensure that product quality and performance comply with design drawings, technical standards, and user requirements.