A method and a dense phase powder pump for conveying coating powder from a first powder reservoir to a second downstream powder reservoir or to a downstream powder spray-coating gun or the like installation for spraying coating powder are disclosed. In order to reduce the number of components of the dense phase powder pump that require maintenance, the dense phase powder pump is designed as a single-chamber dense phase powder pump and has only a single powder conveyor chamber for conveying coating powder.

A process for pressurizing bulk material in a hopper; wherein the hopper is configured as a lock hopper (29) containing a bulk material, a source of pressurized gas, lines (22, 26, 28) to convey the pressurized gas from the source to one or more inlets (30) of the lock hopper, a valve arranged in the lines, wherein the opening position of said valve (34, 35) is controlled to provide pressurizing gas to the lock hopper at a preset constant gas volume flow rate.

An extruder hood configured to operate in a steady-state configuration and a non-steady-state configuration. The extruder hood comprises an air inlet, an extruder hood outlet, and an extruder discharge zone within an interior space of the extruder hood, with the extruder discharge zone configured to receive extruded material. In the steady-state configuration, the extruder hood is configured to direct air received from the air inlet across the extruder discharge zone to cause extruded material to be ejected from the extruder hood via the extruder hood outlet. In the non-steady-state configuration, the extruder hood is configured to direct air received from the air inlet out of the extruder hood via the extruder outlet without being directed across the extruder discharge zone.

The invention relates to a method and a dense phase powder pump (1) for conveying coating powder from a first powder reservoir (101) to a second downstream powder reservoir or to a downstream powder spray-coating gun (102) or the like installation for spraying coating powder. In order to reduce the number of components of the dense phase powder pump (1) that require maintenance, the dense phase powder pump (1) is designed as a single-chamber dense phase powder pump and has only a single powder conveyor chamber (4) for conveying coating powder.

The invention relates to a method and a dense phase powder pump (1) for conveying coating powder from a first powder reservoir (101) to a second downstream powder reservoir or to a downstream powder spray-coating gun (102) or the like installation for spraying coating powder. In order to reduce the number of components of the dense phase powder pump (1) that require maintenance, the dense phase powder pump (1) is designed as a single-chamber dense phase powder pump and has only a single powder conveyor chamber (4) for conveying coating powder.

A fluidizing butterfly valve. The fluidizing butterfly valve includes a valve body and a fluidizing valve disk or member configured to fluidize material located above the butterfly valve and/or material moving through the butterfly valve.

A fluidizing butterfly valve. The fluidizing butterfly valve includes a valve body and a fluidizing valve disk or member configured to fluidize material located above the butterfly valve and/or material moving through the butterfly valve.

A Pneumatic Bulk Container (PBC) includes a tank body configured to carry bulk product and further configured to form an airtight seal to hold pressurized air and an input port for receiving pressurized air. An air line coupled to the input port for receiving pressured air from the air input port and for conducting the pressurized air into the PBC is coupled to a three inch jet line that produces a greater volume and lower pressure air into an output port. At least one inflatable air slide coupled to receive pressured air from the air line for fluidizing and pushing the bulk product towards the four inch diameter output port.

A system includes a standpipe for receiving a flow of solids therethrough, the standpipe having at least one inlet configured to receive a gas for decreasing a solids-to-gas ratio of the flow, a sealpot having an inlet fluidly coupled to the standpipe and an outlet fluidly coupled to a riser, the sealpot being configured to fluidize the solids received from the standpipe and to transport the solids to the riser, and a drain device fluidly coupled to an outlet in the standpipe, the outlet being located upstream from the inlet of the sealpot. The drain device is configured to remove the excess gas from the flow of solids within the standpipe to increase the solids-to-gas ratio of the flow prior to the solids entering the sealpot.

A system includes a standpipe for receiving a flow of solids therethrough, the standpipe having at least one inlet configured to receive a gas for decreasing a solids-to-gas ratio of the flow, a sealpot having an inlet fluidly coupled to the standpipe and an outlet fluidly coupled to a riser, the sealpot being configured to fluidize the solids received from the standpipe and to transport the solids to the riser, and a drain device fluidly coupled to an outlet in the standpipe, the outlet being located upstream from the inlet of the sealpot. The drain device is configured to remove the excess gas from the flow of solids within the standpipe to increase the solids-to-gas ratio of the flow prior to the solids entering the sealpot.