A web forming apparatus and a sheet manufacturing apparatus

The purpose of the present invention is to suck out a mixture uniformly in a suction mechanism of a web forming device. A housing unit 110 is provided with a first inclined surface 111 and a second inclined surface 112 inclined so as to narrow a gap therebetween in the lower part in the vertical direction and facing each other. A third inclined surface 121 is provided that is positioned between the first inclined surface 111 and the second inclined surface 112， faces the first inclined surface 111 and is inclined such that the gap therebewtween narrows in the lower part in the vertical direction， thereby forming a first gap 125 with the first inclined surface 111. A fourth inclined surface 122 is provided that is positioned between the first inclined surface 111 and the second inclined surface 112， faces the second inclined surface 112 and is inclined such that the gap therebetween narrows in the lower part in the vertical direction， thereby forming a second gap 126 with the second inclined surface 112. A suction blower 77 recovers a mixture that has passed through a mesh of a mesh belt 72 by causing the same to pass through the first gap 125 and the second gap 126. The purpose of the present invention is to suck out a mixture uniformly in a suction mechanism of a web forming device. A housing unit 110 is provided with a first inclined surface 111 and a second inclined surface 112 inclined so as to narrow a gap therebetween in the lower part in the vertical direction and facing each other. A third inclined surface 121 is provided that is positioned between the first inclined surface 111 and the second inclined surface 112， faces the first inclined surface 111 and is inclined such that the gap therebewtween narrows in the lower part in the vertical direction， thereby forming a first gap 125 with the first inclined surface 111. A fourth inclined surface 122 is provided that is positioned between the first inclined surface 111 and the second inclined surface 112， faces the second inclined surface 112 and is inclined such that the gap therebetween narrows in the lower part in the vertical direction， thereby forming a second gap 126 with the second inclined surface 112. A suction blower 77 recovers a mixture that has passed through a mesh of a mesh belt 72 by causing the same to pass through the first gap 125 and the second gap 126.