An apparatus for collecting dust from a cutting unit is provided. The apparatus includes a rotary valve operatively connected to the cutting unit, a conduit in fluid communication with the rotary valve, and a compacting machine disposed downstream from the conduit and configured to receive dust from the conduit. A blower is configured to pull air downstream to carry the dust into the compacting machine. The compacting machine produces a compact from the dust.

A cyclone separation system (1) for separating live insects, comprising a discharge nozzle (5) having a discharge end (7) comprising a discharge channel (8) for discharging live insects from the cyclone separation system (1) when in use. The discharge channel (8) comprises primary air injection channels (11) arranged to provide an injected upstream air flow (F) in an upstream direction (U) back into the discharge nozzle (5) for stopping discharge of live insects. The discharge nozzle (5) comprises an inner wall part (12) extending between an intake end (6) of the discharge nozzle (5) and the discharge channel (8), wherein the inner wall part (12) comprises elongated secondary air injection channels (13) extending from the discharge channel (8) in the upstream direction (U), wherein the secondary air injection channels (13) are arranged to provide an injected lateral air flow (V) along the inner wall part (12).

A cyclone separation system (1) for separating live insects, comprising a discharge nozzle (5) having a discharge end (7) comprising a discharge channel (8) for discharging live insects from the cyclone separation system (1) when in use. The discharge channel (8) comprises primary air injection channels (11) arranged to provide an injected upstream air flow (F) in an upstream direction (U) back into the discharge nozzle (5) for stopping discharge of live insects. The discharge nozzle (5) comprises an inner wall part (12) extending between an intake end (6) of the discharge nozzle (5) and the discharge channel (8), wherein the inner wall part (12) comprises elongated secondary air injection channels (13) extending from the discharge channel (8) in the upstream direction (U), wherein the secondary air injection channels (13) are arranged to provide an injected lateral air flow (V) along the inner wall part (12).

Disclosed is a grain conveying apparatus using air, the apparatus efficiently collecting foreign materials while moving grains upward to a position at which the grains are easily fed into a grain processing machine by using the suction force air, and preventing shock so as to prevent damage to the grains. The grain conveying apparatus using air, according to the present invention, comprises: a grain supply hopper for accommodating the grains; a conveyer pipe for guiding the grains supplied from the grain supply hopper and the air flowing in from an external air inlet such that the grains, by means of the air suction force, and the air are moved together; a grain discharge pipe connected to the end of the conveyer pipe; a separation pipe for separating the grains and the foreign materials, the separation pipe comprising a horizontal part connected to the grain discharge pipe and a downwardly curved part for dropping the grains; a rotary valve connected to the lower part of the curved part of the separation pipe so as to discharge the grains in predetermined amounts; an exhaust pipe for discharging the separated foreign materials to the outside; and an air suction means having a ring blower connected to the end of the exhaust pipe so as to suck the air, wherein the front end of the grain discharge pipe is provided to penetrate the lower side of a finishing plate for closing a coupled part of the separation pipe, an inner diameter of the grain discharge pipe and an inner diameter of the separation pipe are formed to be small in a ratio of 0.4 to 0.5:1 such that the internal pressure of the separation pipe is lowered due to a change in the pressure difference, and a cut inclined surface, to be inclined in the direction of the grain conveyer pipe, is formed at the lower part of the front end of the grain discharge pipe, so as to cover the upper part thereof in order not to be influenced by the air discharged to the exhaust pipe connected to the upper side of the separation pipe, and allows the grains to be discharged to the lower side of the horizontal part of the separation pipe having a large inner diameter.

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 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.

Method for conveying and handling waste material in the channel section of a pneumatic wastes conveying system, in which method solid waste material or recycleable material fed into a conveying pipe is conveyed in the conveying pipe of the pneumatic pipe transport system for material along with the transporting air flow to the delivery end of the material conveying system, where the material is separated from the transporting air. In the method the material is acted upon in the conveying pipe by stopping the speed of movement of the material being conveyed in the conveying pipe by means of a stopper arranged between the separating device of the delivery end and the material being handled, or against the stopper at, or in the proximity of, the delivery end of the material conveying system and by bringing about in the channel space of the conveying pipe volumetric compression in at least a part of the material being conveyed by means of the stopper arranged between the separating device of the delivery end and the material being handled, or against the stopper, by means of a pressure difference acting on the different sides of the material being handled, such as by the combined effect of suction and replacement air, before transportation of the material onwards in the conveying pipe into a container of the separating device arranged at the delivery end of the pneumatic transport system for wastes.

Method for conveying and handling waste material in the channel section of a pneumatic wastes conveying system, in which method solid waste material or recycleable material fed into a conveying pipe is conveyed in the conveying pipe of the pneumatic pipe transport system for material along with the transporting air flow to the delivery end of the material conveying system, where the material is separated from the transporting air. In the method the material is acted upon in the conveying pipe by stopping the speed of movement of the material being conveyed in the conveying pipe by means of a stopper arranged between the separating device of the delivery end and the material being handled, or against the stopper at, or in the proximity of, the delivery end of the material conveying system and by bringing about in the channel space of the conveying pipe volumetric compression in at least a part of the material being conveyed by means of the stopper arranged between the separating device of the delivery end and the material being handled, or against the stopper, by means of a pressure difference acting on the different sides of the material being handled, such as by the combined effect of suction and replacement air, before transportation of the material onwards in the conveying pipe into a container of the separating device arranged at the delivery end of the pneumatic transport system for wastes.

A pneumatic transport system (10), comprising at least one material transport carrier for transporting a pneumatic transportable material (M) in the pneumatic system (10) by means of a pneumatic device (1a) adapted to operate with negative pressure on the material transport carrier to transport the pneumatic transportable material (M) in the pneumatic system (10) comprising one or more tubes (13) forming a continuous transport path (CL), wherein a pressure-drop monitoring element (3a) is provided and adapted to monitor filter performance of a separating filter (16) provided in the transport path (CL) and adapted to separate the material transport carrier and the transportable material (M) in the transport path (CL).

A pneumatic conveying apparatus operable to transport material from a supply source to a process which requires a rate of change of feed rate far in excess of what is possible from a typical pneumatic conveying system and pipeline alone, and for a process where storage of large volumes of material directly adjacent to the process feed point is either not possible or disadvantageous. The pneumatic conveying apparatus (100; 101;102) comprises at least one conduit (11) and a compression device (8) operable to supply and transport pneumatic media through at least one conduit (11). The supply source (1) may be a feed hopper and is operable to discharge material into the pneumatic conveying system downstream of the supply source. In the pneumatic conveying system at least one vessel (9; 9A, 9B; 20) is arranged to receive material from the supply source (1) and to discharge material to at least one conduit (11). The system also includes a filter receiver (4), which is configured to simultaneously receive and discharge material and pneumatic media from at least conduit. The filter receiver has a working volume or capacity which is very small in relation to the feed rate, typically 1 to 2 minutes storage when operating at the maximum discharge rate, and with a volume typically th to th of the volume of the vessels feeding material into the start of the pneumatic conveying pipeline. The filter receiver is equipped with a discharge device operable to increase the discharge rate to the process from the minimum feed rate to the maximum feed rate in a time period of 2 to 30 seconds. The filter receiver (4) is configured and operable to separate material and pneumatic media such that the material can be discharged from the filter receiver to the downstream process (2), in order to separate the conveying apparatus from the process and provide further advantages described within the invention. The apparatus includes a control system (19) that is operable to maintain a target weight and/or level within the filter receiver, and recover the target weight and/or level in the filter receiver, by measuring the weight and/or level and the rate of change of weight or level, of all storage vessels discharging material to the pneumatic conveying pipeline and process and incorporating aspects of closed loop control methodologies.