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A veteran sanitation worker has invented a silencer for blowers.

Release Date:

2016-05-25 13:54

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Sanitation workers often begin sweeping the streets in the early hours of the morning. Concerned that the noise from blowers might disturb nearby residents, Wang Zhenjing, the team leader of Section Two at the Anqiu City Sanitation Bureau, painstakingly sought ways to reduce the blower’s noise. After four rounds of improvements, he finally succeeded. A lifelong inventor, Wang has previously earned numerous achievements and awards in the field of electrical engineering. In his sanitation work, he has also developed a series of practical methods—such as using caustic soda to remove grease and gasoline torches to strip chewing gum—and promoted them, garnering positive results and widespread acclaim. Worried about disturbing residents with the blower, on the morning of May 23, the Section Two team of the Anqiu City Sanitation Bureau…

　　Sanitation workers often begin sweeping the streets in the early hours of the morning. Concerned that the noise from blowers might disturb nearby residents, Wang Zhenjing, the section team leader of the Second Cleaning Division at Anqiu City’s Sanitation Bureau, painstakingly sought ways to reduce blower noise. After four rounds of improvements, he finally succeeded. A lifelong tinkerer, Wang has previously earned numerous achievements and awards in the field of electrical engineering. In his sanitation work, he has also developed a series of practical techniques—such as using caustic soda to remove grease and gasoline torches to strip chewing gum—and promoted them, garnering positive results and widespread acclaim.
 
　　Concerned that the blower may disturb residents.
 
　　In the early hours of May 23, Wang Zhenjing, the section team leader of the Second Cleaning Division at Anqiu City’s Sanitation Bureau, slung a blower weighing over ten kilograms over his shoulder and set out to sweep the curbs along both sides of the road. The reporter noticed that Wang’s blower differed from ordinary models, featuring an additional pipe on one side. What puzzled the reporter most was that, standing just over ten meters away, he could hardly hear any noise at all.
 
　　Wang Zhenjing said with a smile that the reason his blower is much quieter than ordinary models is precisely that extra “pipe”—a noise‑reduction duct he built himself. In the past, when he used the blower to sweep the streets, residents as far as four or five hundred meters away could still hear its sound. After installing this noise‑reduction duct, the noise has been cut by more than half.
 
　　Wang Zhenjing, 53, has been working in sanitation for five years. Because sanitation workers often begin sweeping the streets at dawn, the noise from the blowers has long been a major source of frustration. “When we’re at work, most residents are still asleep,” Wang said. “I’ve often worried that the blower’s noise might disturb their rest, so I’ve been eager to improve it.”
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