Water-saving electricity-saving reverse osmosis water purifying machine

Abstract

A water-saving and power-saving reverse osmosis pure water machine, which includes a pretreatment filter element, a high-pressure pump, a reverse osmosis filter element, a waste water ratio, a solenoid valve, a normal pressure intermediate water tank and a normal pressure pure water tank, and the water treated by the pretreatment filter element Enter the normal pressure intermediate water tank, the high pressure pump absorbs water from the normal pressure intermediate water tank, the effluent of the reverse osmosis filter element enters the normal pressure pure water tank, and the sewage of the reverse osmosis filter element returns to the intermediate water tank after being depressurized by the waste water ratio. Compared with the prior art, the advantages of the water-saving and power-saving reverse osmosis pure water machine of the present invention are: it can prevent high-pressure pumps from idling without water and frequent start and stop phenomena, the service life of high-pressure pumps is long, energy is saved, and raw water utilization rate is high , It can provide the function of water supply by quality, basically no waste water discharge, the system runs stably and the manufacturing cost is low.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a water-saving and power-saving reverse osmosis pure water machine. Background technique [0002] Reverse osmosis is a relatively mature pure water manufacturing technology. At present, the utilization rate of raw water for large-scale reverse osmosis water production equipment is relatively high, while the utilization rate of raw water for small-scale reverse osmosis water production equipment is low, especially for those using a single reverse osmosis filter element. Equipment, such as household reverse osmosis pure water machines sold in large quantities on the market, the water utilization rate is only 25%, or even lower, that is, the production of 1m 3 Purified water needs to consume at least 4m 3 tap water. For today's day by day scarcity of fresh water resources, this kind of waste is really a pity. [0003] Known technology one: figure 1 It is a schematic diag...

AI Technical Summary

Problems solved by technology

[0007] 2. The high-pressure pump 3 has a heavy load and long running time, which not only affects the service life but also wastes electric energy

In this way, the back pressure at the water outlet of the reverse osmosis filter element 4 is gradually increased, so that the load on the high-pressure pump 3 is gradually increased, and the filtering process is becoming more and more difficult, and the water outlet flow rate will also become smaller and smaller accordingly. Extended run time of high pressure pump 3

The consequence is that it not only affects the service life of the high pressure pump 3 but also wastes electric energy

[0009] 3. High manufacturing cost

Both of these increase the manufacturing cost of the water storage tank 6

[0012] 4. The high pressure pump 3 may be damaged due to idling without water or frequent start and stop

[0018] 1. Problems such as short service life of high-pressure pumps, waste of electric energy, inability to prevent high-pressure pumps from idling without water and frequent start and stop, and high manufacturing costs still exist, and the manufacturing cost is further increased due to the increase of the concentrated water pressure storage tank 14

[0019] 2. The system is unstable

[0023] 1. It cannot eliminate the phenomenon of high pressure pump 3 running dry without water, and cannot solve the problems of high pressure pump 3 such as short service life and waste of electric energy

[0024] 2. The system is unstable

When the tap water pressure is high, the back pressure at the outlet of the wastewater ratio 10 will increase accordingly, resulting in poor discharge of concentrated water, increasing the load on the high pressure pump 3 and affecting the normal operation of the high pressure pump 3; when the tap water pressure is low, the water pressure It is difficult to overcome the filtration resistance of the pretreatment filter element 2, so that negative pressure may appear at the inlet of the high-pressure pump 3, which will cause the high-pressure pump 3 to run without water or start and stop frequently, affecting the normal operation of the high-pressure pump 3

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