CN209567850U - reverse osmosis pure water machine - Google Patents

Abstract

The utility model discloses a reverse osmosis pure water machine, which comprises a water inlet electromagnetic valve, a pump and a reverse osmosis filter device which are sequentially arranged according to the direction of water flow. The drain solenoid valve is connected with the outside air; the raw water side of the reverse osmosis filter device is connected with a flushing solenoid valve; when the water inlet solenoid valve is closed and the drain solenoid valve and flushing solenoid valve are opened, the drain solenoid valve is connected with the outside air, and the reverse osmosis valve is pumped. The water in front of the permeable membrane is discharged by the flushing solenoid valve; the pure water side of the reverse osmosis filtration device is connected to the water storage tank, when the flushing solenoid valve is opened, the water inlet solenoid valve and the drain solenoid valve are closed, the pure water in the water storage tank The permeable membrane is backwashed. The above-mentioned reverse osmosis pure water machine, after the water production is completed, first discharges the unfiltered water in front of the membrane, and then backwashes the membrane with pure water in the water storage tank, which solves the problem of high TDS of the first cup of water.

Description

reverse osmosis pure water machine

technical field

The utility model relates to the technical field of water purification, in particular to a reverse osmosis pure water machine.

Background technique

For the existing reverse osmosis pure water machine (RO pure water machine), the raw water flowing into the raw water port is filtered through the reverse osmosis filter device during use, and the pure water flows out from the pure water port. When the water purifier is not in use, the unfiltered raw water stays on the raw water side of the reverse osmosis membrane (RO membrane). When the time reaches a certain level, the salt or other dissolved solids in the water in front of the RO membrane will permeate. The RO membrane then reaches the pure water side of the RO membrane. In this way, when the pure water machine is in use again, the total dissolved solids (TDS) of the first cup of pure water flowing out of the pure water machine when it starts to use is relatively high, resulting in low quality of the first cup of pure water.

Utility model content

Based on this, the technical problem to be solved by the utility model is to provide a reverse osmosis pure water machine which has a simple structure and can effectively reduce the TDS of the first cup of pure water of the pure water machine.

In order to solve the above technical problems, the utility model adopts the following technical solutions to achieve:

A reverse osmosis pure water machine, comprising a water inlet solenoid valve, a pump and a reverse osmosis filter device arranged in sequence according to the water flow direction, the reverse osmosis filter device includes a reverse osmosis membrane, and the water inlet solenoid valve and the pump are provided with a device capable of communicating with the outside air connected drainage solenoid valve; the raw water side of the reverse osmosis filter device is connected with a flushing solenoid valve; when the water inlet solenoid valve is closed, the drain solenoid valve and the flushing solenoid valve are opened, the drain solenoid valve is connected with the outside air, through The pump discharges the water in front of the reverse osmosis membrane through the flushing solenoid valve; the pure water side of the reverse osmosis filter device is connected to a water storage tank, and when the flushing solenoid valve is opened, the water inlet solenoid valve and the drain solenoid valve are closed, the The pure water in the storage tank backwashes the reverse osmosis membrane.

In one of the embodiments, a branch pipeline is connected to the pipeline between the water inlet solenoid valve and the pump, the end of the branch pipeline communicates with the outside air, and the drain solenoid valve is arranged on the branch pipeline.

In one embodiment, the drain solenoid valve is a three-way valve, and the drain solenoid valve is arranged on the pipeline between the water inlet solenoid valve and the pump.

In one embodiment, a one-way valve is arranged between the reverse osmosis filter device and the water outlet of the water purifier, and the water storage tank is arranged between the reverse osmosis filter device and the one-way valve.

In one of the embodiments, a post activated carbon filter device is also arranged between the one-way valve and the water outlet.

In one of the embodiments, a PPF primary filter device, a UDF filter device and a CTO filter device are sequentially arranged between the raw water inlet of the water purifier and the water inlet solenoid valve according to the water flow direction.

Compared with prior art, advantage and positive effect of the present utility model are:

The above-mentioned reverse osmosis pure water machine has a simple structure. By setting the drain solenoid valve and the water storage tank respectively before and after the reverse osmosis filter device, after the water production is completed, the drain solenoid valve is opened, and the pump continues to run to remove the unfiltered water in front of the membrane. After the reverse osmosis membrane is discharged, the pure water in the water storage tank is used to backwash the reverse osmosis membrane, which solves the problem of high TDS of the first glass of water; after the unfiltered water in front of the membrane is discharged, the pure water in the water storage tank does not need A large pressure can flow from the back of the membrane to the front of the membrane to backwash the reverse osmosis membrane.

Description of drawings

Fig. 1 is the structural representation of the utility model reverse osmosis pure water machine;

Explanation of reference signs:

PPF primary filter device 1; UDF filter device 2; CTO filter device 3; water inlet solenoid valve 4; pump 5; reverse osmosis filter device 6; flushing solenoid valve 7; drain solenoid valve 8; water storage tank 9; rear activated carbon Filter device 10; one-way valve 11; water outlet tap 12.

Detailed ways

The specific embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings, but the utility model can be implemented in various ways defined and covered by the claims.

Referring to Fig. 1, the reverse osmosis pure water machine in an embodiment of the present utility model includes a raw water inlet, a PPF primary filter device 1, a UDF filter device 2 and a CTO filter device 3, and a water inlet solenoid valve 4 arranged in sequence according to the water flow direction , pump 5, reverse osmosis filter device 6, post activated carbon filter device 10 and water outlet. The PPF primary filter device 1 pre-treats the tap water to completely remove various tiny impurities such as residual sediment and rust in the water. The UDF filter device 2 can effectively remove harmful substances such as color and odor, residual chlorine, and organic matter in water. The CTO filter device 3 deeply absorbs harmful substances such as residual chlorine, different colors and odors, and suspended solids in the water to further purify the water quality. The reverse osmosis filter device 6 includes a reverse osmosis membrane. Under a certain pressure, water molecules can pass through the reverse osmosis membrane, while impurities such as inorganic salts, heavy metal ions, organic matter, colloids, bacteria, and viruses in raw water cannot pass through the reverse osmosis membrane. Thereby strictly distinguishing the permeable pure water from the impermeable concentrated water.

Wherein, the water inlet solenoid valve 4 and the pump 5 are provided with a drain solenoid valve 8 capable of communicating with outside air. The raw water side of the reverse osmosis filter device 6 is connected with a flushing solenoid valve 7 . When the water from the pure water mechanism ends, control the water inlet solenoid valve 4 to close, the drain solenoid valve 8 and the flushing solenoid valve 7 to open, the drain solenoid valve 8 is connected to the outside air, and the raw water and concentrated water in front of the reverse osmosis membrane are pumped through the pump 5 Together, they are discharged by the flushing solenoid valve 7. After the water is discharged, the pump 5 is closed. When the water production ends, the time for the pump 5 to continue running is determined according to the structure and volume of the actual reverse osmosis filter device 6 . A water storage tank 9 is connected to the pure water side of the reverse osmosis filter device 6 . After the water in front of the reverse osmosis membrane is discharged, the flushing solenoid valve 7 is controlled to open, the water inlet solenoid valve 4 and the drain solenoid valve 8 are closed, and the pure water in the water storage tank 9 flows into the reverse osmosis filter device 6 . Since the water in front of the reverse osmosis membrane has been discharged, the pure water in the water storage tank 9 can slowly flow into the front of the membrane from behind the reverse osmosis membrane without a lot of pressure, and the reverse osmosis membrane is backwashed, and finally the solenoid valve 7 is flushed. discharge. During the water production state, close the connection between the drain solenoid valve 8 and the outside world, open the water inlet solenoid valve 4, close the flushing solenoid valve 7, and run the pump 5.

The above-mentioned reverse osmosis pure water machine has a simple structure. By setting the drainage electromagnetic valve 8 and the water storage tank 9 respectively before and after the reverse osmosis filtration device 6, after the water production is completed, the drainage electromagnetic valve 8 is opened, and the pump 5 continues to operate and first removes the membrane. The unfiltered water in front of the membrane is discharged, and then the reverse osmosis membrane is backwashed by pure water in the water storage tank 9, which solves the problem of high TDS of the first cup of water; after the unfiltered water in front of the membrane is discharged, the storage The pure water in the water tank 9 can backwash the reverse osmosis membrane before flowing into the membrane from behind the membrane without great pressure.

In this embodiment, a branch pipeline is connected to the pipeline between the water inlet solenoid valve 4 and the pump 5, and the end of the branch pipeline communicates with the outside air, and the drain solenoid valve 8 is arranged on the branch pipeline.

In another embodiment, the drain solenoid valve 8 can also be a three-way valve, and the drain solenoid valve 8 is arranged on the pipeline between the water inlet solenoid valve 4 and the pump 5 . The drain electromagnetic valve 8 realizes communication with the outside air or closing by switching the flow direction.

A one-way valve 11 is arranged between the reverse osmosis filter device 6 and the water outlet of the water purifier, and the one-way valve 11 is used to prevent backflow of the purified water at the water outlet. The water storage tank 9 is arranged between the reverse osmosis filter device 6 and the one-way valve 11 . A water outlet 12 is arranged at the water outlet, and the water outlet 12 is preferably a bacteriostatic outlet.

The above-mentioned embodiments only express several implementations of the utility model, and the description thereof is relatively specific and detailed, but it should not be construed as limiting the patent scope of the utility model. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (6)

1. A reverse osmosis pure water machine, comprising a water inlet electromagnetic valve, a pump and a reverse osmosis filter device arranged successively according to the water flow direction, the reverse osmosis filter device comprises a reverse osmosis membrane, it is characterized in that the water inlet solenoid valve and the pump A drainage electromagnetic valve capable of communicating with the outside air is provided; a flushing electromagnetic valve is connected to the raw water side of the reverse osmosis filtration device; when the water inlet electromagnetic valve is closed, the drainage electromagnetic valve and the flushing electromagnetic valve are opened, the drainage electromagnetic valve It is connected with the outside air, and the water in front of the reverse osmosis membrane is discharged by the flushing solenoid valve through the pump; the pure water side of the reverse osmosis filter device is connected with a water storage tank, the flushing solenoid valve is opened, the water inlet solenoid valve and the drainage solenoid valve When the valve is closed, the pure water in the water storage tank backwashes the reverse osmosis membrane. 2. The reverse osmosis pure water machine according to claim 1, characterized in that, a branch pipeline is connected to the pipeline between the water inlet solenoid valve and the pump, and the end of the branch pipeline communicates with the outside air, so that The drain solenoid valve is arranged on the branch pipeline. 3. The reverse osmosis pure water machine according to claim 1, characterized in that, the drain solenoid valve is a three-way valve, and the drain solenoid valve is arranged on the pipeline between the water inlet solenoid valve and the pump. 4. The reverse osmosis pure water machine according to any one of claims 1-3, characterized in that, a one-way valve is arranged between the reverse osmosis filter device and the water outlet of the pure water machine, and the water storage tank It is arranged between the reverse osmosis filter device and the one-way valve. 5. The reverse osmosis pure water machine according to claim 4, characterized in that, a post activated carbon filter device is also arranged between the one-way valve and the water outlet. 6. reverse osmosis pure water machine according to claim 5, it is characterized in that, between the raw water inlet of pure water machine and described water inlet electromagnetic valve, be provided with PPF initial effect filtering device, UDF filtering device and CTO filter unit.