A tail gas exhausting pressure stabilization control system is provided. The system can control the pressure and the flow rate of a gas and a driving gas inputted therein, such that when the gas and the driving gas are mixed and outputted to a tail gas exhausting outlet, the pressure thereof can be controlled under a predetermined pressure. Besides, when the back pressure is generated because of the exhausted gases from the outlet, an energy-saving pressure regulator can adjust the pressure of the driving gas outputted to an eductor in accordance with the detecting result of the back pressure in order to resist the back pressure. Thus, the exhausted gases from the outlet can be still under the predetermined pressure between the gas and a gas distribution tube so as to stabilize the pressure and flow rate of the exhausted gases from the outlet and save the driving gas.

A tail gas exhausting pressure stabilization control system is provided. The system can control the pressure and the flow rate of a gas and a driving gas inputted therein, such that when the gas and the driving gas are mixed and outputted to a tail gas exhausting outlet, the pressure thereof can be controlled under a predetermined pressure. Besides, when the back pressure is generated because of the exhausted gases from the outlet, an energy-saving pressure regulator can adjust the pressure of the driving gas outputted to an eductor in accordance with the detecting result of the back pressure in order to resist the back pressure. Thus, the exhausted gases from the outlet can be still under the predetermined pressure between the gas and a gas distribution tube so as to stabilize the pressure and flow rate of the exhausted gases from the outlet and save the driving gas.

A dual direction vacuum apparatus for creating vacuum and purging obstructions from a vacuum port of the apparatus. The apparatus provides a housing having an air passageway, wherein the air passageway has a first end and a second end. A vacuum pressure inlet is formed in the housing and is adaptable to receive pressurized air from a pressurized air source to create vacuum in the vacuum port and establish a vacuum mode. A purge pressure inlet is formed in the housing and adaptable to receive pressurized air from a pressurized air source to direct pressurized air toward the vacuum port to establish a purge mode and dislodge any obstructions from the vacuum port.

A dual direction vacuum apparatus for creating vacuum and purging obstructions from a vacuum port of the apparatus. The apparatus provides a housing having an air passageway, wherein the air passageway has a first end and a second end. A vacuum pressure inlet is formed in the housing and is adaptable to receive pressurized air from a pressurized air source to create vacuum in the vacuum port and establish a vacuum mode. A purge pressure inlet is formed in the housing and adaptable to receive pressurized air from a pressurized air source to direct pressurized air toward the vacuum port to establish a purge mode and dislodge any obstructions from the vacuum port.

A dual direction vacuum apparatus for creating vacuum and purging obstructions from a vacuum port of the apparatus. The apparatus provides a housing having an air passageway, wherein the air passageway has a first end and a second end. A vacuum pressure inlet is formed in the housing and is adaptable to receive pressurized air from a pressurized air source to create vacuum in the vacuum port and establish a vacuum mode. A purge pressure inlet is formed in the housing and adaptable to receive pressurized air from a pressurized air source to direct pressurized air toward the vacuum port to establish a purge mode and dislodge any obstructions from the vacuum port.

A dual direction vacuum apparatus for creating vacuum and purging obstructions from a vacuum port of the apparatus. The apparatus provides a housing having an air passageway, wherein the air passageway has a first end and a second end. A vacuum pressure inlet is formed in the housing and is adaptable to receive pressurized air from a pressurized air source to create vacuum in the vacuum port and establish a vacuum mode. A purge pressure inlet is formed in the housing and adaptable to receive pressurized air from a pressurized air source to direct pressurized air toward the vacuum port to establish a purge mode and dislodge any obstructions from the vacuum port.

A vacuum device for a material handling system includes a vacuum device body and a sealing element. The vacuum device body has a vacuum passageway in which H vacuum is generated in response to activation of a pressurized air supply that forces pressurized air through a venturi device. The sealing element moves to a sealing position to substantially seal the vacuum passageway when the air supply is activated, and is urged toward the sealing position via pressurized air that is diverted from an inlet of the vacuum device to the sealing element. The sealing element moves to substantially vent the vacuum passageway when the air supply is deactivated. The vacuum passageway may be in fluid communication with a vacuum cup, which seals against the object when the sealing element is at the sealing position and the vacuum generating device generates at least a partial vacuum in the vacuum passageway.

A vacuum device for a material handling system includes a vacuum device body and a sealing element. The vacuum device body has a vacuum passageway in which H vacuum is generated in response to activation of a pressurized air supply that forces pressurized air through a venturi device. The sealing element moves to a sealing position to substantially seal the vacuum passageway when the air supply is activated, and is urged toward the sealing position via pressurized air that is diverted from an inlet of the vacuum device to the sealing element. The sealing element moves to substantially vent the vacuum passageway when the air supply is deactivated. The vacuum passageway may be in fluid communication with a vacuum cup, which seals against the object when the sealing element is at the sealing position and the vacuum generating device generates at least a partial vacuum in the vacuum passageway.

A method for controlling a vacuum generator (3) in a vacuum system (10) for transportation of objects, which vacuum system (10) comprises a vacuum generator (3) driven by a compressed air flow via a first on/off valve (1), wherein the vacuum generator (3) is arranged to be brought in flow connection with the vacuum gripper means (6) comprised in the vacuum system (10), in order to supply vacuum to the vacuum gripper means (6) in result of the compressed air flow, wherein the vacuum system (10) comprises a second valve (2), which is arranged to supply compressed air into the vacuum system (10); one centralized pressure sensor (4) used for monitoring a system pressure (P) inside the vacuum system (10) and for adaptive blow-off; and a vacuum system controller (5), wherein if the on/off valve (1) is not flowing air to the vacuum generator (3), the vacuum system controller (5) indicates a state of no vacuum generation, and the second valve (2) is activated, allowing an amount of compressed air to flow into the vacuum-system (10) for blow-off, using vacuum system properties being characterized with respect to volume and flow-restriction in relation to the blow-off capacity of the blow-off function and for every release cycle wherein blow-off is terminated and excessive air injected into the system is released through the vacuum gripper means, analyzing pressure propagation following blow-off for calculating a duration of when the vacuum system (10) is being fully pressure-equalized (E) in parts of the vacuum gripper means by using a compensation factor (k), wherein the compensation factor (k) is stored and used for the next release cycle.

The invention relates to energy saving in vacuum systems by means of a method and a controller enabling to consider the fluctuation in system-pressure of a system by determining a maximum system-pressure S2H and a minimum system-pressure S2h for each working cycle W.sub.C based on a determined target system-pressure p.sub.n.sup.− and a pre-set system-pressure p.sub.0.sup.− for the current working cycle W.sub.Cn (n=1, 2, 3, . . . ). The method is especially adapted to fluctuations in system-pressure level of a vacuum system comprising a vacuum gripper tool.