Blowback control method for air filter
A control method and air filtration technology, applied in separation methods, dispersed particle filtration, chemical instruments and methods, etc., can solve the problems of pressure difference increase, filter cartridge accumulation, etc., and achieve the goal of reducing energy consumption, reducing failure rate, and reducing pollution Effect
Inactive Publication Date: 2014-03-12
江苏华强新能源科技有限公司
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Problems solved by technology
Although it has been in backflushing, the dust in the filter cartridge will continue to accumulate, and the pressure difference will gradually increase. In the end, Ps will reach or even exceed Pt
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[0013] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention Modifications in equivalent forms all fall within the scope defined by the appended claims of this application.
[0014] Such as figure 1 As shown, the basic working principle of the self-cleaning filter: the pressure transmitter transmits the pressure difference ΔP signal before and after the blowback filter cartridge to the PLC 10 . When ΔP reaches a set value P1, the PLC starts the blowback control, the electromagnetic diaphragm valve opens, the compressed air is ejected from the blowback pipe nozzle, and the blowback air enters the inner cavity of the filter cartridge. Due to ...
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The invention discloses a blowback control method for an air filter. When difference deltaP between the internal pressure and the external pressure of a filter cartridge reaches a preset value Ps1, a blowback device is started to blow back the filter cartridge so as to reduce the difference between the internal pressure and the external pressure of the filter cartridge; when the difference deltaP between the internal pressure and the external pressure of the filter cartridge rises once again to Ps2 along with the time, the blowback device is re-started; when the blowback device is started at the i-th time, the preset value of the difference between the internal pressure and the external pressure of the filter cartridge is Psi; the steps are repeatedly carried out in sequence until deltaP reaches final resistance Pt, and the filter cartridge is replaced, wherein for Pt,..., Psi,..., Ps2 and Ps1, the former is greater than the latter. According to the blowback control method for the air filter, the filter cartridge is blown back and self-cleaned in an early stage, so that the service life of the filter cartridge is prolonged, and the environmental pollution caused by blowback aerodynamic noises is greatly reduced.
Description
[0001] technical field [0002] The invention belongs to an air filter control method, in particular to a control method of a reverse blowing device. Background technique [0003] In the impeller rotating mechanical equipment with air as the medium, an air filter is usually arranged before the inlet to filter out various impurities and dust in the air, so as to protect the rotating blades from damage and impact, and maintain the smooth and efficient operation of the equipment , such as: gas turbine intake system, air filter before blower inlet. In addition, air filters are also widely used in air compressor stations, workshops and other equipment. During the use of the air filter, due to the gradual accumulation of dust and various impurities, the resistance to air flow gradually increases, and when it reaches a certain level, a new filter element must be replaced. The self-cleaning air filter uses compressed air to blow back, which can blow off the dust and impurities ...
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Inventor 邬文泰陈欣
Owner 江苏华强新能源科技有限公司