Abrégé

This vertical shaft pump 10 is provided with: a pump casing 12 which is disposed in a water suction tank 1 so as to extend in the vertical direction; a vane wheel 25 which is disposed in an upper part of a duct tube 16 inside the pump casing 12; and a first air supply pipe 30 which is disposed outside the pump casing 12. An air intake opening 30a of the first air supply pipe 30 is positioned higher than a highest water level that is higher than a water discharge initiation position LWL, while an air supply opening 30b of the first air supply pipe 30 is connected to the duct tube 16. The duct tube 16 is provided with an outer tube 17 and an inner tube 18 having a flared portion 18b, while the air supply opening 30b of the first air supply pipe 30 is connected to this flared portion 18b of the inner tube 18.

Classes IPC  ?

• F04D 13/00 - Installations ou systèmes de pompage

Abrégé

A vertical shaft pump 10 is provided with: a pump casing 12 disposed in a water intake tank 1; an impeller 25 disposed so as to be located at a water discharge start water level LWL; swirl prevention piping 30 which suppresses the generation of an air intake swirl Sv; and air supply piping 38 for supplying air into the pump casing 12. The swirl prevention piping 30 is provided with: an annular horizontal pipe 32 which surrounds the pump casing 12; and a first vertical pipe 35A, the lower end of which is connected to the horizontal pipe 32 and the upper end of which is closed. The air supply piping 38 is provided with: a first air intake pipe 40, one end of which is disposed at the water discharge start water level LWL in the water intake tank 1, and the other end of which is disposed within the first vertical pipe 35A; and an air supply pipe 50, one end of which is connected to the horizontal pipe 32, and the other end of which is connected to the pump casing 12 at a position below the impeller 25.

Classes IPC  ?

• F04D 29/66 - Lutte contre la cavitation, les tourbillons, le bruit, les vibrations ou phénomènes analogues; Equilibrage
• F04D 13/00 - Installations ou systèmes de pompage

Abrégé

A control device (40) is provided with a switching valve mechanism (41) and first and second actuators (71, 79). The switching valve mechanism (41) is provided with a valve element (61) for switching which is located within a casing (42). The valve element (61) can linearly move between an open position at which first and second pressure change chambers (45, 47) of the casing (42) are communicated with each other and a closed position at which the communication is interrupted. The valve element (61) is held at the open position and the closed position by a first holding mechanism (toggle spring (70)). When a float (72) ascends to a first water level (HWL), the first actuator (71) moves the valve element (61) from the closed position to the open position. When the degree of vacuum within a pressure detection chamber (94) becomes a second degree (P2) of vacuum or less, the second actuator (79) moves the valve element (61) from the open position to the closed position.

Classes IPC  ?

• E03F 5/22 - Adaptations d'installations de pompage pour remonter les eaux d'égout
• E03F 7/00 - Autres installations ou appareillage pour le fonctionnement des égouts, p.ex. pour empêcher ou signaler son arrêt; Vidange des fosses d'aisances

Produits et services

Pumps for use in power-generating plants; Pumps for use in seawater desalination plants; Pumps for use in petrochemical plants; Pumps for use in water supply (waterworks) equipment; Pumps for use in the sewage treatment equipment; Agricultural pump stations; Drainage pump for flood control; Feed pumps; Pumps for air-conditioning and/or air-heating/cooling apparatus; Pumps (machines); Pumps (parts of machines, engines or motors); Blowers (machines); Pneumatic or hydraulic machines and instruments; Pumping units (machines); Pump installations; Machines and apparatus for use in power plants; Wind-powered electricity generators; Water-powered electricity generators; Power generating apparatus utilizing biomass gases; Power generating apparatus for cogeneration systems; Power generating machines; Power installations (generators); Motors, electric, other than for land vehicles; Machines for water drainage; Apparatus for waste sewage treatment (machines); Water distribution machines; Machines and apparatus for waste disposal; Motors, other than for land vehicles; Turbines, other than for land vehicles; Hydraulic engines and motors; Hydraulic turbines; Non-electric prime movers (not for land vehicles); Molds (parts of machines); Metalworking machines and tools; Bearings (parts of machines); Bearing brackets for machines; Ball rings for bearings; Gears for machines; Machine wheelwork; Oil rings (parts of machines); Grease boxes (parts of machines); Joints (parts of engines); Universal joints (Cardan joints); Shaft couplings (machines); Journal boxes (parts of machines); Pulleys; Speed governors for machines, engines and motors; Transmission shafts, other than for land vehicles; Transmissions, other than for land vehicles; Journals (parts of machines); Piston segments; Piston rings; Pistons (parts of machines or engines); Machine elements (not for land vehicles); Heat exchangers (parts of machines); Vapor condensers (parts of machines); Controllers for machines, motors or engines; Control cables for machines, motors or engines; Guards (parts of machines); Guidance apparatus for machines; Holders for machine tools; Hoods (parts of machines); Housings (parts of machines); Machinery mounts; Heat pumps (parts of machines); Chemical processing machines and apparatus; all aforementioned goods not being or consisting of valves;  Parts and fittings for all the aforesaid goods not being or consisting of valves. Desalination plants; Apparatus for waste sewage treatment (installations); Sewage treatment plants; Sludge treatment apparatus; Waste water purification tanks; Tanks for disposable of human waste; Apparatus and installations for sewage purification; Water intake apparatus; Water purification apparatus; Water supply installations; Water sterilizers; Water distribution installations; Irrigation devices (machines) for agricultural use; Automatic watering installations; Air-heating/cooling apparatus utilizing cogeneration systems; Air conditioning apparatus; Air deodorizing apparatus; Air-heating/cooling apparatus; Heat pumps; Boilers, other than parts of machines; Industrial or domestic water heaters utilizing cogeneration systems; Solar water heaters; Power plants;  all aforementioned goods not being or consisting of valves; Parts and fittings for all the aforesaid goods not being or consisting of valves. Mechanical seal; Gaskets; Junctions for pipes (not of metal); Packings; Sealant materials. Repair, maintenance, checking and installation of pumps; Repair, maintenance, checking and installation of air heating/cooling apparatus and air conditioning apparatus; Repair, maintenance, checking and installation of irrigation machines and apparatus; Repair, maintenance, checking and installation of electric motors; Repair, maintenance, checking and installation of power generating apparatus; Repair, maintenance, checking and installation of apparatus for sewage water treatment and sludge treatment; Repair, maintenance, checking and installation of desalination plants; Repair, maintenance, checking and installation of water distribution installations; Proving information relating to all the aforesaid services; Consultancy and advisory services relating to all the aforesaid services.

Produits et services

Pumps for use in power-generating plants; Pumps for use in seawater desalination plants; Pumps for use in petrochemical plants; Pumps for use in water supply (waterworks) equipment; Pumps for use in the sewage treatment equipment; Agricultural pump stations; Drainage pump for flood control; Feed pumps; Pumps for air-conditioning and/or air-heating/cooling apparatus; Pumps (machines); Pumps (parts of machines, engines or motors); Blowers (machines); Pneumatic or hydraulic machines and instruments; Pumping units (machines); Pump installations; Machines and apparatus for use in power plants; Wind-powered electricity generators; Water-powered electricity generators; Power generating apparatus utilizing biomass gases; Power generating apparatus for cogeneration systems; Power generating machines; Power installations (generators); Motors, electric, other than for land vehicles; Machines for water drainage; Apparatus for waste sewage treatment (machines); Water distribution machines; Machines and apparatus for waste disposal; Motors, other than for land vehicles; Turbines, other than for land vehicles; Hydraulic engines and motors; Hydraulic turbines; Non-electric prime movers (not for land vehicles); Molds (parts of machines); Metalworking machines and tools; Bearings (parts of machines); Bearing brackets for machines; Ball rings for bearings; Gears for machines; Machine wheelwork; Oil rings (parts of machines); Grease boxes (parts of machines); Joints (parts of engines); Universal joints (Cardan joints); Shaft couplings (machines); Journal boxes (parts of machines); Pulleys; Speed governors for machines, engines and motors; Transmission shafts, other than for land vehicles; Transmissions, other than for land vehicles; Journals (parts of machines); Piston segments; Piston rings; Pistons (parts of machines or engines); Machine elements (not for land vehicles); Heat exchangers (parts of machines); Vapor condensers (parts of machines); Controllers for machines, motors or engines; Control cables for machines, motors or engines; Guards (parts of machines); Guidance apparatus for machines; Holders for machine tools; Hoods (parts of machines); Housings (parts of machines); Machinery mounts; Heat pumps (parts of machines); Chemical processing machines and apparatus; all aforementioned goods not being or consisting of valves; Parts and fittings for all the aforesaid goods not being or consisting of valves. Desalination plants; Apparatus for waste sewage treatment (installations); Sewage treatment plants; Sludge treatment apparatus; Waste water purification tanks; Tanks for disposable of human waste; Apparatus and installations for sewage purification; Water intake apparatus; Water purification apparatus; Water supply installations; Water sterilizers; Water distribution installations; Irrigation devices (machines) for agricultural use; Automatic watering installations; Air-heating/cooling apparatus utilizing cogeneration systems; Air conditioning apparatus; Air deodorizing apparatus; Air-heating/cooling apparatus; Heat pumps; Boilers, other than parts of machines; Industrial or domestic water heaters utilizing cogeneration systems; Solar water heaters; Power plants;  all aforementioned goods not being or consisting of valves; Parts and fittings for all the aforesaid goods not being or consisting of valves. Mechanical seal; Gaskets; Junctions for pipes (not of metal); Packings; Sealant materials. Repair, maintenance, checking and installation of pumps; Repair, maintenance, checking and installation of air heating/cooling apparatus and air conditioning apparatus; Repair, maintenance, checking and installation of irrigation machines and apparatus; Repair, maintenance, checking and installation of electric motors; Repair, maintenance, checking and installation of power generating apparatus; Repair, maintenance, checking and installation of apparatus for sewage water treatment and sludge treatment; Repair, maintenance, checking and installation of desalination plants; Repair, maintenance, checking and installation of water distribution installations; Proving information relating to all the aforesaid services; Consultancy and advisory services relating to all the aforesaid services.

Produits et services

Repair, maintenance and installation of pumps [ ; Repair, maintenance and installation of air heating/cooling apparatus and air conditioning apparatus; Repair, maintenance and installation of irrigation machines and apparatus; Repair, maintenance and installation of electric motors; Repair, maintenance and installation of power generating apparatus; Repair, maintenance and installation of apparatus for sewage water treatment and sludge treatment; Repair, maintenance and installation of desalination plants; Repair, maintenance and installation of water distribution installations; Proving information on the repair, maintenance and installation of all the aforesaid goods; Consultation services on the repair, maintenance and installation of all the aforesaid goods ] [ Product testing, namely, testing of pumps, heating/cooling apparatus and air conditioning apparatus, irrigation machines and apparatus, electric motors, power generating apparatus, apparatus for sewage water treatment and sludge treatment, desalination plants and water distribution installations ]

Produits et services

Repair, maintenance and installation of pumps; [ Repair, maintenance and installation of air heating/cooling apparatus and air conditioning apparatus; Repair, maintenance and installation of irrigation machines and apparatus; Repair, maintenance and installation of electric motors; Repair, maintenance and installation of power generating apparatus; Repair, maintenance and installation of apparatus for sewage water treatment and sludge treatment; Repair, maintenance and installation of desalination plants; Repair, maintenance and installation of water distribution installations; Providing information on the repair, maintenance and installation of all the aforesaid goods; Consultation services on the repair, maintenance and installation of all the aforesaid goods ] [ Product testing, namely, testing of pumps, heating/cooling apparatus and air conditioning apparatus, irrigation machines and apparatus, electric motors, power generating apparatus, apparatus for sewage water treatment and sludge treatment, desalination plants and water distribution installations ]