Abstract

Reciprocating pump (1), comprising a casing (2) having guide seats (3) extended along a corresponding radial direction (X), heads (4) mounted on the casing (2) at respective guide seats (3) and each defining a pumping chamber (5), and membranes (6) each delimiting a pumping chamber (5). In addition, the reciprocating pump (1) comprises actuation means (7) housed inside the casing (2) and comprising pistons (8), each of which carrying a membrane (6) fixed thereto and susceptible of sliding in a guide seat (3) between a release position and a compression position, in which the membrane (6) respectively expands and reduces the volume of the pumping chamber (5), and a thrust cam (10) in abutment against the pistons (8) and rotating in order to move them from the release position to the compression position. In addition, the actuation means (7) comprise one or more rocker arms (11), each of which provided with a first lever arm (13) acting on a corresponding piston (8) and an opposite second lever arm (14), and a return cam (15), which is fixed on the drive shaft (9) and is actuatable to rotate around the rotation axis (Y) in order to move each rocker arm (11) around a corresponding pin (12). Each rocker arm (11) is also movable between an operative position, in which the return cam (15) acts against the second lever arm (14) in order to return, by means of the first lever arm (13), the piston (8) to slide from the compression position towards the release position, and a non-operative position, in which the return cam (15) releases the second lever arm (14) in order to free the piston (8) to slide from the release position towards the compression position.

IPC Classes  ?

• F04B 1/0426 - Arrangements for pressing the pistons against the actuated camArrangements for connecting the pistons to the actuated cam
• F04B 1/0439 - Supporting or guiding means for the pistons
• F04B 1/047 - Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the outer ends of the cylinders
• F04B 9/04 - Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
• F04B 43/02 - Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms

Abstract

Alternating pump (1), comprising a casing (2) provided with at least three guide jackets (23), each of which defining a corresponding guide seat (3) extended along a corresponding radial direction (X), at least three heads (4), each of which mounted on the casing (2) at a respective guide seat (3) and defining a pumping chamber (5), and at least three membranes (6), each of which delimiting a pumping chamber (5). In addition, the alternating pump (1) comprises actuation means (7), housed within the casing (2) and comprising at least three pistons (8), each of which carrying, fixed thereto, a corresponding membrane (6) and is susceptible of sliding in a guided manner in a corresponding guide seat (3) between a release position, in which the corresponding membrane (6) expands the volume of the pumping chamber (5) and a compression position, in which the membrane (6) reduces the volume of the pumping chamber (5), and a drive shaft (9) carrying, fixed thereto, at least one thrust cam (10), which abuts against each piston (8) and is actuatable to rotate around a rotation axis (Y) thereof in order to move it from the release position to the compression position. In addition, the actuation means (7) comprise at least three return springs (11), each of which placed to connect between two adjacent pistons (8) in order to move each piston (8) from the compression position to the release position.

IPC Classes  ?

• F04B 9/04 - Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
• F04B 43/02 - Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms

Goods & Services

Pumps [machines]; electrical pumps; volumetric pumps; hydraulic pumps; diaphgram pumps; vacuum pumps [machines]; pumps for machines; fluid pumps; centrifugal pumps; lubricating pumps; compressed air pumps; diaphragm pumps for pumping liquid material; diaphragm pumps for pumping semi-liquid material; irrigation and washing pumps; valves [parts of pumps]; valves for pumps; pressure valves [parts of machines]; pump control valves; pressure controllers [valves] being parts of machines; pressure reducers being parts of machines; valves, in particular for hydraulic circuits; control valves for regulating flow of fluid media; distributors and valves for hydraulic circuits; pressure regulators [parts of machines]; pressure controllers [valves] being parts of machines; pressure reducers [parts of machines]; pulleys [parts of machines]; spraying machines; spray nozzles being parts of machines; spray lances being horticultural implements; motor pumps and electric pumps; oleodynamic pumps; plunger pumps. Control boards; control panels for spraying machines and atomisers; valves control panels; manometers; computers for valves; pressure regulators (gauges); computers for the automatic management of agricultural processes; push button panels (electrical -).

Goods & Services

Electric pumps; volumetric pumps; hydraulic pumps; diaphragm pumps; vacuum pumps; pumps for machines; centrifugal pumps; lubricating pumps; compressed air pumps; diaphragm pumps for pumping liquid material; diaphragm pumps for pumping semi-liquid material; water treatment equipment, namely, pumps for use in irrigation and washing systems; valves for pumps; pressure reducers as parts of machines; pump control valves; pump control valves for use in hydraulic circuits; pump control valves for regulating flow of fluid media; distributors and pump control valves for use in hydraulic circuits; pulleys being parts of machines; spraying machines; machine parts, namely, nozzles which are parts of power-operated sprayers; power-driven spray lances being horticultural implements; motor pumps and electric pumps; plunger pumps

Goods & Services

Pumps [machines]; Electrical pumps; Positive displacement pumps; Hydraulic pumps; Diaphgram pumps; Vacuum pumps [machines]; Vacuum pumps [machines]; Pumps [machines]; Fluid pumps; Centrifugal pumps; Lubricating pumps; Compressed air pumps; Diaphragm pumps for pumping liquid material; Diaphragm pumps for pumping semi-liquid material; Irrigation and washing pumps; Valves; Valves for pumps; Pressure valves [parts of machines]; Pump control valves; Pressure controllers [valves] being parts of machines; Reducers (Pressure -) [parts of machines]; Valves, in particular for hydraulic circuits; Control valves for regulating flow of fluid media; Distributors and valves for hydraulic circuits; Pressure regulators [parts of machines]; Pressure controllers [valves] being parts of machines; Reducers (Pressure -) [parts of machines]; Pulleys [parts of machines]; Sprinkling devices; Spray nozzles being parts of machines; Spray lances being horticultural implements; Motor pumps and Electric pumps; Oleodynamic pumps; Piston pumps. Plugboards; Control panels for sprinkling machines and atomisers; Valve control panels; Manometers; Computers for valves; Pressure regulators; Computers for the automatic management of agricultural processes; Push button panels (Electrical -).

Goods & Services

Inflators, Piston pumps, Centrifugal pumps, Lubricating pumps, Compressed air pumps, Vacuum pumps, Diaphragm pumps, Valves, in particular for hydraulic circuits, pressure regulating valves, flow regulating valves, distributors and valves for oil-hydraulic circuits, Pressure reducers, Pulleys.

Goods & Services

Pumps, centrifugal pumps, lubricating pumps, compressed air pumps, vacuum pumps, diaphragm pumps, valves, pressure valves, discharge valves, pressure reducers.

Goods & Services

(1) Pumps, namely piston pumps, pumps for mistblowers, for spraying machines all for distributing liquid products in agriculture, forestry, horticulture, gardening; centrifugal pumps; lubricating pumps; compressed air pumps; vacuum pumps; diaphragm pumps; valves namely for hydraulic circuits; pressure valves; discharge valves; distributors and valves for oleodynamic circuits; pressure reducers

Goods & Services

Hydraulic pumps for sprayers, for mistblowers, for spraying machines all for distributing liquid products in the agriculture, forestry, horticulture, gardening; volumetric pumps, diaphragm pumps, plunger pumps, all for sprayers, for mistblowers, for spraying machines all for distributing liquid products in the agriculture, forestry, horticulture, gardening; centrifugal pumps; lubricating pumps; vacuum pumps; valves as machine components; distributors for machines, namely, hydraulic distributors for use in hydraulic circuits for sprayers, for mistblowers, for spraying machines all for distributing liquid products in the agriculture, forestry, horticulture, gardening; valves for use in hydraulic circuits for sprayers, for mistblowers, for spraying machines all for distributing liquid products in the agriculture, forestry, horticulture, gardening; valves for pumps; pump control valves; pressure reducers as parts of machines Pressure and discharge relief valves for use in pressure control and for use in flow calibration of liquid products in hydraulic circuits for sprayers, for mistblowers, for spraying machines all for distributing liquid products in the agriculture, forestry, horticulture, gardening

Goods & Services

Pumps, Centrifugal pumps, Lubrication pumps, Compressed air pumps, Vacuum pumps, Pump diaphragms,Valves, in particular for hydraulic circuits, pressure regulating valves, flow regulating valves, distributors and valves for oil-hydraulic circuits, Pressure reducers,Pulleys.