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Product description

The filter bag of the centrifuge is in a regenerative state after discharge each time, which has good filtration effect and high efficiency, and effectively avoids the influence of the residual filter cake layer on the material filtration performance. During discharge, the pre-scraping treatment is carried out by the scraper on the flap. After scraping, the residual filter cake layer around the drum is about 10mm, and the upper end of the filter bag inside the drum is fixed on the liquid baffle plate. The lower end is fixed on the lifting frame in the drum, and the lifting frame can be driven by the pneumatic lifting shaft in the middle of the main shaft for up and down reciprocating movement, pull the lower end of the filter bag in the drum for up and down reciprocating movement. When the lifting frame is pulled to the bottom, the filter bag is pulled into a cone, the residual filter cake layer around the drum is cut and crushed in a circular manner, the residual filter cake slides down the filter bag and is discharged from the discharge port of the frame, and the discharge is thorough and clean.


The transition of the structural parts of the whole machine is smooth and smooth, effectively eliminating the sanitary dead Angle; The clamshell adopts a large butterfly clamshell structure with good stiffness and strength; The machine adopts closed structure, the centrifuge inner cavity is isolated from the outside air, and the explosion-proof motor, frequency converter, energy consumption brake and other devices are equipped. The feed adopts the independent swash plate cloth mode, the cloth speed is adjustable, the cloth speed is asynchronous with the drum speed, and the specially designed cloth plate flow guide bar makes the cloth faster and more uniform, especially for the crystal filtration with good dehydration performance and large particle size, which can eliminate the vibration caused by the uneven cloth.


The platform four-point support vibration damping system adopts liquid damping shock absorber, which has excellent vibration damping effect.

The centrifuge adopts PLC program control, frequency conversion speed regulation, the control mode adopts automatic control or semi-automatic manual control, and the feeding, separation, washing, dehydration, unloading, bag pulling and other processes in the centrifuge operation process can be run according to the procedures set in advance according to customer requirements.

The centrifuge is not only suitable for solid-liquid separation of general media, but also for solid-liquid separation of media with poor fluidity and poor fabric performance, and has better adaptability to materials, and is suitable for pharmaceutical, food, chemical and other industries.

The pull-bag centrifuge is a new type of centrifuge, which integrates the filter cake removal function of the hanging bag centrifuge (no residue of filter cake) and the close operation and full automatic degree of the automatic centrifuge.


Technical parameter


PGZL type plate vertical scraper assisted unloading centrifuge Working process

Centrifuge upper cover and casing

Centrifuge upper cover and casing

The top cover and the shell are fitted with flanges, and the hydraulic clamshell structure is large;

The top cover is made of circular arc head and flange welding processing, and the shell flange is processed with a tight sealing ring groove to seal reliably; A feeding tube, a cleaning tube, a nitrogen filling tube, a sight mirror, an explosion-proof lamp, a scraping device, a mechanical level detector, and a swash plate distributor are arranged on the upper cover

The opening and closing of the upper cover are driven by hydraulic cylinder;

Drum

The drum is finished after welding the bottom of the drum, the wall of the drum and the liquid baffle. The wall of the drum has no reinforcement and no cleaning dead Angle. The corners around the filter hole of the drum are rounded and the filter hole is polished to make it difficult to stick the material liquid.

Filter bag

A number of reinforcement bars are arranged around the filter bag, and the lower end of the pull bag cover is connected and fixed with the reinforcement bar to drive the action of the filter bag.

The filter bag fastening is fixed externally, which is different from the conventional inner fastening mode. It is designed exclusively for our company, making installation and disassembly easier.


               
               
               
Feeding system: swash plate distributor and level detector

1. The cloth tray Angle of the distributor is reasonable, and the material can be evenly arranged to the bottom of the drum and the cover of the drum, without the dead Angle of the cloth, so as to avoid the material forming a mountain shape in the drum after the cloth, resulting in poor material washing effect, inaccurate material level detection, and dripping from the bottom of the drum Liquid and other abnormal phenomena;

2. For materials with different concentrations and properties, the flow speed of materials can be controlled by adjusting the gap between the inner and outer shells of the distributor to improve the smoothness of the fabric;

3. The surface of the outer shell of the distributor is provided with a guide bar to make the material distribution more uniform;

4. Swash plate distributor motor equipped with frequency converter, can be stepless speed regulation;

5. Asynchronous with drum speed to reduce abnormal vibration caused by poor material fluidity during feeding;

6. The side of the feeding tube is provided with a cleaning tube, and the cleaning liquid is washed through the distributor to make the cleaning more fully;

7. The sealing of the distributor shaft adopts PTFE lip sealing and sealing to ensure no leakage;

8. Material level detector: the filling of the material is controlled by the material level detector, the detector is set at the lower end of the detector, the detection plate sends a signal when it touches the material liquid, and the detection plate and time of the detector are controlled at the same time in the feeding control program, as long as one of them is reached, the valve is closed to prevent the material running;


Bag shaking drive device
Bag shaking drive device

1. Cylinder drive, can drive the lower edge of the filter bag up and down rapid reciprocating movement, so that the filter bag has an oscillation effect, completely remove the residual material layer;

2. A special material stopping mechanism is set between the bottom of the bag cover and the blanking hole, which has been proved to be effective enough to prevent the material from drilling into the back of the filter cloth during the bag pulling action, and the scraper will not damage the filter cloth;

3. Pull bag cylinder and main shaft pulley for synchronous rotation, there is no relative movement, no vulnerable parts;

4. Pull bag drive mechanism: pull bag drive cylinder is an independent part of the overall design, located at the bottom of the drive pulley, compact structure (see the attached figure)

Hydraulic control system Hydraulic control syste

Hydraulic control system Hydraulic control syste

1. Maximum pressure of hydraulic station: 10Mpa

2. oil pump motor power: 3KW

3. Phase/frequency/voltage: 3 phase /50Hz/380V.

4. Hydraulic device configuration oil level gauge, thermometer, pressure Gauges, filters and solenoid valves.

5. Motor and solenoid valve explosion-proof grade: EX.dⅡBT4.

6. The shell of hydraulic station is made of carbon steel paint;

Centrifuge workflow


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