Pressure limiting water-break water purifier

Abstract

The invention discloses a pressure limiting water-break water purifier, which is composed of a primary filter group, a water pump 2, a power supply 3, a RO membrane group 4, a high pressure switch 5, and a waste water ratio 10. A concentration water outlet pipe 7 is connected to the waste water ratio 10, the RO membrane group 4 is connected to the concentration water outlet pipe 7 and is connected to a concentration water pressure limiting concentration water valve 8, and a mechanical type pressure limiting valve is used for cutting the concentration water of the water purifier. So that machine cost and failure rate are reduced, the usage is convenient and safe, and the assembly is simple. The mechanical type pressure limiting valve is used for cutting the concentration water of the water purifier.

Description

technical field [0001] The invention relates to a pure water machine, in particular to a pure water machine equipped with a booster water pump without a pressure storage tank or a water pure machine with a pressure tank under the condition that the water inlet pressure is lower than 1 kg. Background technique [0002] Currently on the market, there are ready-to-use pure water equipped with booster pumps, household pure water machines without pressure storage tanks (or pure water machines with pressure tanks when the water inlet pressure is lower than 1 kg), the cut-off of concentrated water The water cut-off method is generally to use the solenoid valve to cut off. When the solenoid valve is in front of the RO membrane casing group, the pressure in the membrane casing will drop to zero after the machine stops, and when the water production is started again, the pressure in the membrane casing will reach There is a process for the water output value, and you need to wait when...

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Problems solved by technology

[0002] Currently on the market, there are ready-to-use pure water equipped with booster pumps, household pure water machines without pressure storage tanks (or pure water machines with pressure tanks when the water inlet pressure is lower than 1 kg), the cut-off of concentrated water The method of water cut-off is generally the way of shutting off the solenoid valve. When the solenoid valve is in front of the RO membrane casing group, after the machine stops, the pressure in the membrane casing will drop to zero. When the water production is restarted, the pressure in the membrane casing will reach There is a process for the water output value, and you need to wait when making water; when the solenoid valve is installed in the concentrated water pipe behind the RO membrane shell group, after the machine stops, the pressure in the membrane shell remains high, which is unsafe; the solenoid valve needs to consume power as an electrical component The current resources of the adapter and the increased power consumption, the cost of the solenoid valve is much higher than the cost of the mechanical valve, which increases the cost of the machine. The solenoid valve needs to be installed at the same time as the circuit and the waterway when the machine is assembled, so the assembly is cumbersome and the failure rate is high.

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