초록 ▼

This invention relates to a feed system for conveying loose pieces of a coarse particulate or pelletized hot melt material such as adhesives from a storage container to a melt tank. The system includes a transition hopper having insulation between the hopper and the melt tank to prevent premature me

This invention relates to a feed system for conveying loose pieces of a coarse particulate or pelletized hot melt material such as adhesives from a storage container to a melt tank. The system includes a transition hopper having insulation between the hopper and the melt tank to prevent premature melting of the loose adhesive pellets or pieces before they pass into a melt tank. An air supply for providing air pressure to the interior of the hopper can be attached to the hopper to prevent vapors from rising from the hot melt tank into the transition hopper and a vent opening for exhausting vapors from the hot melt tank can be located in the top of the melt tank.

대표청구항 ▼

[ We claim:] [1.] A vacuum feed system for conveying a particulate material from a storage container to a melt tank, the system comprising:a vacuum loader having a means for withdrawing particulate material from the storage container, an outlet opening, and means periodically releasing particulate m

[ We claim:] [1.] A vacuum feed system for conveying a particulate material from a storage container to a melt tank, the system comprising:a vacuum loader having a means for withdrawing particulate material from the storage container, an outlet opening, and means periodically releasing particulate material from the outlet opening;a melt tank for receiving and melting the particulate material released from the vacuum loader located a spaced distance below the vacuum loader, said melt tank having an inlet opening;a transition hopper interconnecting the vacuum loader and the melt tank to direct the particulate material released from the vacuum loader to the inlet opening of the melt tank;pressure means for injecting air pressure into the transition hopper to prevent vapors from the hot melt tank from rising in the transition hopper and condensing on inner surfaces thereof to cause misfeed or blockage of material passing through the transition hopper; andheat transfer reduction means to lessen the amount of heat passing from the melt tank to the outlet opening of the vacuum loader.