Industrial Filter

Industrial Filter

Industrial filter is a kind of filter widely used in metallurgy, chemical, petroleum, paper, medicine, food, mining, electric power, urban water supply. Such as industrial wastewater, filtration of circulating water, regeneration of emulsion, filtration of waste oil, continuous casting water system in metallurgical industry, blast furnace water system, high-pressure water descaling system for hot rolling. It is an advanced, efficient and easy to operate fully automatic filtration device.

Equipment structure

The industrial filter consists of a housing, a multi-element filter, a backwashing mechanism, an electric control box, a reducer, an electric valve and a differential pressure controller. The diaphragm in the housing divides the inner cavity into upper and lower chambers, and the upper chamber is provided with a plurality of filter cores, so that the filter space is fully utilized, the volume of the filter is significantly reduced, and the reverse cavity is installed with a reverse Flush the suction cup. During operation, the turbid liquid enters the lower cavity of the filter through the inlet, and enters the inner cavity of the filter element through the partition hole. Impurities larger than the gap of the filter core are trapped, the clean liquid passes through the slit to the upper chamber, and finally is sent out from the outlet.

working principle

Industrial filter, automatic sewage filter core uses high-strength wedge filter, automatic cleaning of the filter element by differential pressure control and timing control. When the impurities in the filter accumulate on the surface of the filter element, the differential pressure between the inlet and outlet increases to a set value, driving the backwashing mechanism. When the backwashing suction port is directly opposite to the filter inlet, the drain valve is opened. At this time, the system is drained, and a negative pressure zone is formed on the inside of the suction cup and the filter core, which is lower than the water pressure outside the filter, forcing part of the circulating water from the outside of the filter. The inside of the filter element flows into the inside of the filter element, and the foreign particles adsorbed on the inner wall of the filter element flow into the tray with water and are discharged from the drain valve. The specially designed filter screen creates a jetting effect inside the filter element and any impurities will be washed away from the smooth inner wall. When the pressure difference between the inlet and outlet of the filter returns to normal or the timer setting time is over, the material continues to flow during the whole process, and the backwash consumes less water, realizing continuous and automated production.

Design Features

1. The filtering equipment adopts the patented internal mechanical structure to realize the high-pressure backwash function in the true sense. It can easily and thoroughly remove the impurities trapped by the filter, clean the dead angle, and the flux has no attenuation, which ensures the filtration efficiency and long-term. Service life.
2. The filtering equipment realizes automatic backwashing through its own retrieval and strain function, which can cope with unstable water quality fluctuations without manual intervention.
3. filter equipment has less wearing parts, no consumables, low operation and maintenance costs, and simple operation and management.
4. The filtering equipment control system is sensitive and accurate, and can flexibly adjust the backwashing pressure difference time and time setting value according to different water sources and filtration precision.
5. Filtration equipment During the backwashing process, each (group) filter screen is backwashed in turn; ensure that the filter screen is safely and efficiently cleaned, while other filter screens are not affected and continue to be filtered.
6. The filtering equipment adopts pneumatic sewage valve, the backwashing is short, the backwashing water consumption is small, and the environment is economical.
7. The structure of the filter equipment is compact and reasonable, the floor space is small, and the installation movement is flexible and convenient.
8. filter equipment electrical system uses integrated control mode, which can achieve remote control.

Instructions

Manual control

Rotate the manual/automatic selector switch to the manual position, the motor and hydraulic control valve are energized, the hydraulic control valve opens, and the blowdown begins. The selector switch is rotated to the automatic position to enter the automatic state.
The manual control state is a means to check whether the motor and the hydraulic control valve can work normally. If the manual control state is not normal, the automatic control state will not work normally.

Automatic control

Rotate the manual/automatic selector switch to the automatic position, first set the filter time and the blowdown time timer. The lower row of digital tubes of the timer displays the set value, and the upper row of digital tubes displays the timing value.
Timer setting method: press the bit selection button, the first digital tube in the lower row flashes, use the increase button to adjust the value, adjust it and press the bit selection button, the second digital tube flashes, use the increase button to adjust the value, in turn analogy. After setting the time, the digital tube continues to flash for 8 seconds. After 8 seconds, the value is stored in the memory, and the power is not lost. After adjusting the value, press the start button to start timing. If the machine is powered off, the next time the power is turned on, the timer will automatically start and timed according to the set time.
The filtration time is divided into units, up to 9999 minutes; the discharge time is in seconds and the maximum time is 99.99 seconds. When the machine is powered on, use the selector switch to enter the automatic state. First, filter, the filter time timer starts to count, and the differential pressure switch also compares the actual differential pressure with the set differential pressure. If the set filter time is reached, the differential pressure is reached. If not, the machine also opens the drain valve for cleaning and draining. The filter time stops counting and the drain time starts to count. When the drain time is up, the drain valve is closed, the drain is stopped, the drain time is stopped, the filter time starts to count, and the next cycle is entered. If the set filter time is not reached, and the pressure difference is reached, the machine opens the drain valve for cleaning and draining, the filter time stops counting, and the drain time starts to count; when the blowdown time is up, the drain valve is closed, the cleaning drain is stopped, and the drain time stops counting. The filter time starts to count, and so on.