The present invention relates to a device for drying washings by allowing the heated air for drying to pass through the groove. The screen sweeping apparatus of the device is used for removing the dust captured by the dustproof screen arranged on the suction entrance of the air for drying. The present invention can reduce the equipment cost and the operating cost of the screen sweeping apparatus, and can clean the dustproof screen more efficiently using a device with more simple structure. The dryer for washings comprises a suction vessel(8)for attracting and removing the dust captured by the dustproof screen in good time; and an equipment operated by air pressure. The dryer for washings further comprises a switching valve(11)arranged on the supplying pipe(9)of the air pressure; a negative pressure generator(13)using the jet flow of the air pressure switched by the switching valve; a negative pressure pipe(17)communicating the negative pressure generated by the negative pressure generator to the suction vessel and switching the switching valve when the dryer is stopped so as to attract and remove the dust captured by the dustproof screen. |