Dust removal type solar water heater with anti-freezing function

The invention relates to a dust removal type solar water heater with the anti-freezing function. The water heater comprises a bottom plate, a supporting plate, a supporting column, a water tank, a connecting pipe and multiple heat collecting devices. Each heat collecting device comprises a heat collecting pipe and two first bearings. An anti-freezing mechanism and multiple dust removal mechanismsare further included. Each dust removal mechanism comprises a cleaning plate and multiple connecting assemblies. The anti-freezing mechanism comprises a driving assembly, a stirring assembly and multiple first gears. According to the dust removal type solar water heater with the anti-freezing function, through the dust removal mechanisms, the dust removal function is achieved, dust is prevented from covering the heat collecting pipes, the heat collecting effect of the heat collecting pipes is not affected, the anti-freezing mechanism is arranged, water in the heat collecting pipes and water inthe water tank can be sha