公开(公告)号：US3669502A

公开(公告)日：1972-06-13

申请号：US3669502D

申请日：1971-01-05

申请人： SIMPSON TIMBER CO

发明人： LEMAN MARVIN J

IPC分类号： F23K3/16 ,  F23K3/02

CPC分类号： F23K3/16

摘要： An improved pneumatic spreader stoker is disclosed for delivering a controlled amount of pulverent fuel at a uniform rate over the grate of a combustion furnace. Fuel feeding means uniformly feeds the fuel into the path of gas flow from a high velocity air jet for discharging the fuel into the combustion chamber of the furnace. A pair of opposed, powered rotary dampers are disposed in the path of gas flow ahead of the fuel infeed for evenly and alternately increasing and decreasing the quantity and pressure of gas delivering the fuel to the combustion chamber. A bypass conduit having air flow control means therein bypasses the rotary dampers and allows a minimum of gas flow to the combustion chamber at all times. The fuel feeding means comprises a pair of rotary screw conveyors preferably operated 90* to 180* out of phase with one another and disposed in side-by-side relation for delivering fuel from an infeed end to a discharge end. The flights of each of the screw conveyors are of increased pitch at the discharge end. Discharge openings in the screw housings below the flights of increased pitch of each screw conveyor diverge outwardly toward the discharge end and allow the fuel to flow uniformly by gravity into the path of gas flow for discharge into the combustion chamber of the furnace.

摘要翻译： 公开了一种改进的气动吊具加料器，用于以均匀的速率在燃烧炉的炉排上输送受控量的脉动燃料。 燃料供给装置将燃料均匀地从高速空气喷射进入气流的路径，以将燃料排放到炉的燃烧室中。 一对相对的动力旋转阻尼器设置在燃料进料前方的气流的路径中，以均匀且交替地增加和减少将燃料输送到燃烧室的气体的量和压力。 其中具有气流控制装置的旁通管绕过旋转阻尼器并且允许在任何时候最小的气体流向燃烧室。 燃料供给装置包括一对旋转螺旋输送机，优选地彼此相位相差90°至180°并且并排设置，用于将燃料从进料端输送到排出端。 每个螺旋输送机的螺纹在排出端处具有增加的间距。 在每个螺旋输送机的螺距增加的螺纹的下方的螺钉壳体中的排放口向外朝向排出端发散，并允许燃料通过重力均匀地流入气流的路径，以排放到炉的燃烧室中。

公开(公告)号：US3669039A

公开(公告)日：1972-06-13

申请号：US3669039D

申请日：1970-08-27

申请人： SIMPSON TIMBER CO

发明人： LEMAN MARVIN J

IPC分类号： F23G5/36 ,  F23G7/02

CPC分类号： F23G5/36

摘要： A conical or cylindrical burner for burning wood wastes, bark residues and other combustible solid wastes is disclosed which includes an insulating lining such as a refractory material applied over the inner surface of the shell of the burner to retard heat loss. The insulating liner may be applied in situ after erection of the burner shell. Rows of concentrically arranged grates provide means for delivering primary combustion air to the burning zone. The overfire and recirculation air system includes means to supply ambient and/or hot recirculating gases in a predetermined ratio to keep the burner temperature within a predetermined range. A temperature sensing means located near the exhaust opening at the top of the burner is operatively connected to a controller which automatically adjusts interconnected dampers in the ambient air and hot recirculating gas inlets of the overfire and recirculation air system to a ratio of ambient air to recirculated hot gases to maintain the burner temperature essentially constant even with variable fuel feed to the burner. The refuse burner is capable of combusting wood and bark residues efficiently with significantly reduced visible smoke and particulate matter.