Raised wall for hoppers, in particular for fertilizer spreading machines and hopper obtained in this manner

A hopper comprising an interior, an exterior, a base, and at least one raised wall ring superimposed on the base and constructed with raised walls, each raised wall including:

• at least one panel with at least a first end and a second end which are arranged for mutual connection to corresponding ends of at least one adjacent panel at a connection, there being defined in the at least one panel a plugging surface which is provided with longitudinal edges which are configured to be joined in a superimposed manner on an adjacent edge;
• and
• a seal which is provided to be applied between adjacent panels in the region of the connection, the seal having a first surface configured to abut the plugging surface from the exterior of the hopper, a second surface configured to abut the plugging surface from the interior of the hopper, and a bridge between the first surface and the second surface delimiting a channel between the surfaces,
• wherein the longitudinal edges are interrupted in the region of the connection where the panel is continued only by the plugging surface and the channel receives the plugging surface of at least one of the adjacent panels for covering and blocking a gap generated by the interruption of the longitudinal edges, wherein the first surface has a greater extent than the second surface so as to overhang with respect to a projection thereof in a plane of the first surface and to overhang beyond the gap generated by the interruption of the longitudinal edges, wherein the channel comprises a portion including a superimposition zone in which the channel has double the width with respect to that of another portion of the channel in such a manner that the superimposition zone can receive two superimposed plugging surfaces and the other portion can receive a single one of the plugging surfaces, wherein the first surface has an inflected course in the region of an end of the superimposition zone, and wherein the first surface of the seal in the region of the inflected course is shaped so as to return in a manner tight against the corresponding plugging surface with a terminal portion thereof which extends so as to cover from the exterior a portion of the plugging surfaces, in which the edge is still present.

A hopper comprising an interior, an exterior, a base, and at least one raised wall ring superimposed on the base and constructed with raised walls, each raised wall including:

• at least one panel with at least a first end and a second end which are arranged for mutual connection to corresponding ends of at least one adjacent panel at a connection, there being defined in the at least one panel a plugging surface which is provided with longitudinal edges which are configured to be joined in a superimposed manner on an adjacent edge;
• and
• a seal which has an angular shape, is made from plastic material, and is provided to be applied between adjacent panels in the region of the connection, the seal having a first surface configured to abut the plugging surface from the exterior of the hopper, a second surface configured to abut the plugging surface from the interior of the hopper, and a bridge between the first surface and the second surface delimiting a channel between the surfaces,
• wherein the longitudinal edges are interrupted in the region of the connection where the panel is continued only by the plugging surface and the channel receives the plugging surface of at least one of the adjacent panels for covering and blocking a gap generated by the interruption of the longitudinal edges, wherein the first surface has a greater extent than the second surface so as to overhang with respect to a projection thereof in a plane of the first surface and to overhang beyond the gap generated by the interruption of the longitudinal edges, wherein the channel comprises a portion including a superimposition zone in which the channel has double the width with respect to that of another portion of the channel in such a manner that the superimposition zone can receive two superimposed plugging surfaces and the other portion can receive a single one of the plugging surfaces, wherein the first surface has an inflected course in the region of an end of the superimposition zone, wherein the first surface of the seal in the region of the inflected course is shaped so as to return in a manner tight against the corresponding plugging surface with a terminal portion thereof which extends so as to cover from the exterior a portion of the plugging surfaces, in which the edge is still present, and wherein the channel is shaped to receive four plugging surfaces of four corresponding adjacent panels, both longitudinally and in a superimposed state.