A air cleaner for caloric value instrument

The utility model relates to an air cleaner for caloric value instrument, including an aluminum alloy pros box, opening on this pros' box, lower bottom surface then is provided with a square frame opening, do not bores 4 trompils in four apex angle punishment of square frame simultaneously, follows the filter module that a square was placed to this pros' box upper end opening part, and the free accommodation is netted by square diamond dust respectively in this filter module's both ends, and four apex angles departments of this buddha's warrior attendant gauze have all offered the bolt hole to can pass through fixing bolt with four trompils on the bottom surface under the square box fixes. Can change the sponge at any time and filter the cotton, also can the used repeatedly sponge with filter cotton, great increase air cleaner live time, it is convenient and cheap oneself to make the sponge and filter the cotton, but from 2 above -mentioned aspect greatly increased air cleaner's life, maintenance cost and spare parts expense also significantly reduce.