{"id":55,"date":"2026-07-26T16:53:26","date_gmt":"2026-07-26T16:53:26","guid":{"rendered":"https:\/\/nanzhimachinery.com\/?post_type=product&p=55"},"modified":"2026-07-26T16:53:26","modified_gmt":"2026-07-26T16:53:26","slug":"tunnel-construction-fan","status":"publish","type":"product","link":"https:\/\/nanzhimachinery.com\/zh\/product\/tunnel-construction-fan\/","title":{"rendered":"Tunnel construction fan"},"content":{"rendered":"

SDF fcounter-rotating requency conversion tunnel fan<\/p>\n

 <\/p>\n

SDF fcounter-rotating requency conversion tunnel fan\u00a0features large air volume, stable wind pressure and low noise operation.With explosion-proof and durable structure, it ensures safe ventilation, dust removal and air\u00a0exchange for tunnel and underground engineering construction sites.<\/p>\n

The fan is composed of five parts: Collector,air inlet silencer, primary group, secondary group and\u00a0air outlet silencer. Each stage is driven by a motor with\u00a0the same rated power. The impeller is directly\u00a0connected to the motor shaft, and the rotation direction\u00a0of the impeller between the two adjacent stages is\u00a0opposite. After the gas enters the first stage impeller to\u00a0obtain energy, it is accelerated and discharged through\u00a0the second stage impeller. The latter stage impeller\u00a0has the function of stationary blade of axial flow fan\u00a0and increases the gas flow at the same time, so as to\u00a0achieve higher wind pressure and efficiency. The fan can be disassembled from the middle flange and\u00a0used in a single section, but pay attention to safety to prevent damage to the impeller caused by foreign\u00a0matter inhalation.<\/p>\n

=<\/p>\n

Performance characteristics<\/p>\n

 <\/p>\n

    \n
  1. According to the characteristics of tunnel construction ventilation and airflow characteristics, new energy-saving products are developed.<\/li>\n<\/ol>\n

     <\/p>\n

      \n
    1. Long air supply distance, high efficiency, low noise, and large air volume.<\/li>\n<\/ol>\n

       <\/p>\n

        \n
      1. The impeller is light in weight, strong in strength, and of ultra-high balance grade, extending the service life of the fan motor;<\/li>\n<\/ol>\n

         <\/p>\n

          \n
        1. Blade angle can be adjusted according to different ventilation requirements.<\/li>\n<\/ol>\n

           <\/p>\n

            \n
          1. The muffler is optimized to achieve a good noise reduction effect.<\/li>\n<\/ol>\n

             <\/p>\n

              \n
            1. The fan adopts a special frequency conversion control cabinet, which can adjust the air volume continuously, conveniently, and reliably. Users can select the best air volume and air pressure according to the real-time situation of tunnel excavation, so as to achieve the best energy saving in system control.<\/li>\n<\/ol>\n

               <\/p>\n

                \n
              1. Carry out simulation analysis on the simulation site, optimize the blade shape, make the relationship between the fan air volume, air pressure, and efficiency match best, and its efficiency can reach more than 80%, so as to achieve the best energy saving on the fan structural performance.<\/li>\n<\/ol>\n

                 <\/p>\n

                  \n
                1. According to different tunnel construction conditions, the fan shall be customized and designed to achieve the best match between the fan and the construction conditions, so as to achieve the best energy saving in the construction conditions.<\/li>\n<\/ol>\n

                  Parameter Display<\/p>\n

                   <\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
                  =Model<\/strong><\/td>\nPower<\/strong><\/p>\n

                  \uff08KW\uff09<\/strong><\/td>\n

                  		Diameter of the air duct\uff08mm)<\/strong><\/td>\nImpeller diameter<\/strong><\/p>\n

                  \uff08mm)<\/strong><\/td>\n

                  		Air flow<\/strong><\/p>\n

                  \uff08m\u00b3\/min\uff09<\/strong><\/td>\n

                  		Pressure<\/strong><\/p>\n

                  \uff08Pa\uff09<\/strong><\/td>\n

                  		Expected supply distance of air\uff08m)<\/strong><\/td>\nRemark<\/strong><\/td>\n<\/tr>\n
                  SDF-5<\/td>\n2*5.5KW<\/td>\n\u03a6400-600<\/td>\n500<\/td>\n214-328<\/td>\n485-2695<\/td>\n400<\/td>\nExcavation area<30\u33a1<\/td>\n<\/tr>\n
                  SDF-5<\/td>\n2*7.5KW<\/td>\n\u03a6400-600<\/td>\n500<\/td>\n230-368<\/td>\n510-2765<\/td>\n600<\/td>\nExcavation area<30\u33a1<\/td>\n<\/tr>\n
                  SDF-5.6<\/td>\n2*11KW<\/td>\n\u03a6400-600<\/td>\n560<\/td>\n250-385<\/td>\n540-2900<\/td>\n800<\/td>\nExcavation area<30\u33a1<\/td>\n<\/tr>\n
                  SDF-6<\/td>\n2*15KW<\/td>\n\u03a6400-600<\/td>\n600<\/td>\n310-480<\/td>\n1350-4600<\/td>\n1000<\/td>\nExcavation area<30\u33a1<\/td>\n<\/tr>\n
                  SDF-6<\/td>\n2*18.5KW<\/td>\n\u03a6600-800<\/td>\n600<\/td>\n450-725<\/td>\n1500-5000<\/td>\n1200<\/td>\nExcavation area<30\u33a1<\/td>\n<\/tr>\n
                  SDF-6<\/td>\n2*22KW<\/td>\n\u03a6600-800<\/td>\n600<\/td>\n500-800<\/td>\n1600-5400<\/td>\n1500<\/td>\nExcavation area<30\u33a1<\/td>\n<\/tr>\n
                  SDF-6.3<\/td>\n2*30KW<\/td>\n\u03a6600-800<\/td>\n630<\/td>\n624-990<\/td>\n1900-6400<\/td>\n1800<\/td>\nExcavation area<30\u33a1<\/td>\n<\/tr>\n
                  SDF-6.7<\/td>\n2*37KW<\/td>\n\u03a6600-800<\/td>\n670<\/td>\n700-1100<\/td>\n2120-6750<\/td>\n2000<\/td>\nExcavation area<30\u33a1<\/td>\n<\/tr>\n
                  SDF-7.1<\/td>\n2*45KW<\/td>\n\u03a6800-1000<\/td>\n710<\/td>\n760-1225<\/td>\n2400-7500<\/td>\n2200<\/td>\nExcavation area<50\u33a1<\/td>\n<\/tr>\n
                  SDF-8<\/td>\n2*55KW<\/td>\n\u03a6800-1000<\/td>\n800<\/td>\n770-1300<\/td>\n2600-8150<\/td>\n2500<\/td>\nExcavation area<50\u33a1<\/td>\n<\/tr>\n
                  SDF-11<\/td>\n2*55KW<\/td>\n\u03a61200<\/td>\n1100<\/td>\n1015-1985<\/td>\n625-4150<\/td>\n2800<\/td>\nExcavation area<50\u33a1<\/td>\n<\/tr>\n
                  SDF-11.5<\/td>\n2*75KW<\/td>\n\u03a61200<\/td>\n1150<\/td>\n1171-2281<\/td>\n727-4628<\/td>\n3200<\/td>\nExcavation area<100\u33a1<\/td>\n<\/tr>\n
                  SDF-12.5<\/td>\n2*110KW<\/td>\n\u03a61500<\/td>\n1250<\/td>\n1550-2912<\/td>\n878-5355<\/td>\n3600<\/td>\nExcavation area150\u33a1<\/td>\n<\/tr>\n
                  SDF-13<\/td>\n2*132KW<\/td>\n\u03a61500<\/td>\n1300<\/td>\n1695-3300<\/td>\n930-5920<\/td>\n4000<\/td>\nExcavation area150\u33a1<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                   <\/p>","protected":false},"excerpt":{"rendered":"

                  SDF fcounter-rotating requency conversion tunnel fan   SDF fcounter-rotating requency conversion tunnel fan\u00a0features large air volume, stable wind pressure and low noise operation.With explosion-proof and durable structure, it ensures safe ventilation, dust removal and air\u00a0exchange for tunnel and underground engineering construction sites. The fan is composed of five parts: Collector,air inlet silencer, primary group, secondary […]<\/p>\n","protected":false},"featured_media":56,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[],"product_cat":[15],"product_tag":[],"class_list":["post-55","product","type-product","status-publish","has-post-thumbnail","product_cat-mt","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/nanzhimachinery.com\/zh\/wp-json\/wp\/v2\/product\/55","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nanzhimachinery.com\/zh\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/nanzhimachinery.com\/zh\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/nanzhimachinery.com\/zh\/wp-json\/wp\/v2\/comments?post=55"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nanzhimachinery.com\/zh\/wp-json\/wp\/v2\/media\/56"}],"wp:attachment":[{"href":"https:\/\/nanzhimachinery.com\/zh\/wp-json\/wp\/v2\/media?parent=55"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/nanzhimachinery.com\/zh\/wp-json\/wp\/v2\/product_brand?post=55"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/nanzhimachinery.com\/zh\/wp-json\/wp\/v2\/product_cat?post=55"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/nanzhimachinery.com\/zh\/wp-json\/wp\/v2\/product_tag?post=55"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}