HRP20202003T1 - Device for supplying water in a pressurised water system for use at washing facilities - Google Patents

Claims (3)

1. A device for supplying water in a pressurized water system for use in washing facilities, wherein the pressurized water system comprises a circuit (4) including at least one water pump (5) rotated by a motor (8), and a sprayer for washing (7) with an output nozzle (7a) from which water flows when said sprayer (7) is activated due to the action of a trigger (7b) built into the sprayer (7); characterized by: - consists of a first pressure switch (1) and a second pressure switch (2) together with a check valve (6) and a three-way discharge valve with double position (3) having a hydraulic pilot (3a) acting against the resistance of the spring (3b) ), these two valves (3), (6) are inserted between the drive pump (5) and the sprayer (7), while at the outlet of the drive pump (5) there is a discharge part (4b) of the circuit where the discharge valve (3) is mounted first accompanied by a non-return valve (6); characterized by: - the discharge valve (3) is also connected to one end of the lateral diversion (4d), while the other end of this lateral diversion (4d) is directly connected to the inflow part (4a) which is connected to the outflow part (4b) of the circuit (4), the inflow part (4a), the outflow part (4b) and the lateral diversion (4d) which create a closed circuit and the driving pump (5) are located between these two parts (4a), (4b); while water flows from the outlet nozzle (7a) of the sprayer (7), two pressure switches (1), (2) detect the pressure in the circuit (4) and said pressure switches generate electrical signals that keep the motor (8) rotating, at why when the flow of water from the nozzle (7a) of the sprayer (7) stops, the pressure in the outlet part (4b) drops, due to which the discharge valve (3) takes another position due to which the water circulates through the lateral deflection when its hydraulic pilot (3a) deactivated, the first electrical switch will send an electrical signal communicating that there is no pressure, the electrical signal activates a time delay before the rotation of the motor (8) is stopped. 2. Device for supplying water in a pressurized water system for use in washing facilities, according to claim 1, characterized in that: - the first pressure switch (1) is connected to the outlet part (4b) of the circuit (4) at the outlet of the drive pump (5), before the discharge valve (3); wherein the drop in water pressure in said outlet part (4b) of the circuit (4) is detected by the first pressure switch (1), which generates an electrical signal that stops the rotation of the motor (8) that drives the drive pump (5) when the trigger (7b) of the sprayer (7) dismisses; - the second pressure switch (2) is connected to the terminal part (4c) of the circuit (4) to which the sprayer (7) is connected, the terminal part (4c) starting from the non-return valve (6); the sprayer (7) and the second pressure switch (2) are connected to the terminal part (4c) of the circuit (4), whereby the pressure drop in the water in said terminal part (4c) is detected by the second pressure switch (2). 3. Device for supplying water in a water system under pressure for use in washing facilities, according to claim 1, characterized in that the hydraulic pilot (3a) of the discharge valve (3) is connected to the outlet part (4b) of the circuit (4) at a place located between the discharge valve (3) and the non-return valve (6).