Abstract: A sand making apparatus comprises: a crusher configured to crush crushed materials; a first sorter configured to sort the crushed materials obtained from the crusher into coarse particles, fine particles, and powders through air sorting by air blowing and screening sorting by a screen; a negative pressure collection unit configured to suck and collect the powders from the first sorter; and a second sorter disposed between the first sorter and the negative pressure collection unit, the second sorter configured to sort the powders into coarse powders and fine powders through negative pressure of the negative pressure collection unit.

Abstract: A sand making apparatus comprises: a crusher configured to crush crushed materials; a first sorter configured to sort the crushed materials obtained from the crusher into coarse particles, fine particles, and powders through air sorting by air blowing and screening sorting by a screen; a negative pressure collection unit configured to suck and collect the powders from the first sorter; and a second sorter disposed between the first sorter and the negative pressure collection unit, the second sorter configured to sort the powders into coarse powders and fine powders through negative pressure of the negative pressure collection unit.

Abstract: The invention provides a crusher rotor for which the influence of centrifugal force is minimal, the hammer is compact, and the load on the attachment bolts can be reduced. A notch 16b is provided in an attachment plate 16 so as to take a force of a hammer tip 22, directed in a radial outward direction of a rotor 1, and a protrusion 22b for engaging with the notch 16b is provided on the hammer tip 22.

Abstract: The invention provides a crusher rotor for which the influence of centrifugal force is minimal, the hammer is compact, and the load on the attachment bolts can be reduced. A notch 16b is provided in an attachment plate 16 so as to take a force of a hammer tip 22, directed in a radial outward direction of a rotor 1, and a protrusion 22b for engaging with the notch 16b is provided on the hammer tip 22.

Abstract: The objective of this invention is to provide a sliding mechanism for the toggle block of a jaw crusher that enables the position of the toggle block to be adjusted easily and quickly. This invention is a novel sliding mechanism for the toggle block of a jaw crusher, in which the toggle block supports one end of a toggle plate connected at the other end to the bottom end of the swing jaw: The toggle block is comprised of an upper block and lower block, joined by an elastic body, sandwiched between an upper support member and lower support member that are joined to the machine frame. The toggle block slides back and forth with the application of an external force.

Abstract: The objective of this invention is to provide a method to adjust the position of a jaw crusher toggle block, and a device used for said method; wherein the said device can adjust the cavity width over a wide range, and can be applied to a wide range of jaw crushers, including large models, without itself having to be enlarged.