The utility model relates to the technical field of hearths, and discloses a
hearth assembly of a
coal-fired power generation boiler, which comprises a
hearth mechanism, a feeding door and an air inlet
pipe, the feeding door and the air inlet
pipe are respectively communicated with the front side and the left side of the
hearth mechanism, the right side of the hearth mechanism is communicated with a square
pipe, and a filter module is inserted in an inner cavity of the square pipe. An air outlet of the square pipe is communicated with a three-way valve set, the back face of the three-way valve set is communicated with a bent pipe, the bent pipe is communicated with the air inlet pipe, a limiting mechanism is inserted into the top of the filtering module and comprises a T-shaped arm, and a spring is connected between the T-shaped arm and the filtering module. According to the hearth
assembly of the
coal-fired power generation boiler, the
combustion effect of fuel is improved, then
waste gas is recycled,
energy loss is reduced, the filtering module is rapidly assembled and disassembled from the interior of the square pipe through the additionally-arranged T-shaped arm, spring, connecting rod, clamping block and clamping frame, and therefore the assembling and disassembling speed of the filtering module is increased, and the assembling and disassembling efficiency of the filtering module is improved. And a worker can conveniently maintain and overhaul the filtering module.