CN107311326A - Reverse osmosis water purifier - Google Patents

Abstract

The invention discloses a reverse osmosis water purifier, which comprises a purification assembly, a waste water outlet assembly and a water purification outlet assembly. The purification assembly is respectively connected to the waste water outlet assembly and the water purification outlet assembly; the purification assembly includes 5 μm PP cotton filters sequentially connected by pipelines , pre-activated carbon filter, 1 μm PP cotton filter, two booster pumps and reverse osmosis filter; two booster pumps are connected in series and connected to the control system, and one of the booster pumps is provided in parallel with it and connected to the Solenoid switch valve of the control system. Two booster pumps are connected in series to realize the dynamic boosting of the water purification channel, avoiding the situation that the reverse osmosis water purifier cannot work due to the low pressure of the user's water flow; the control system controls the connection and disconnection of the electromagnetic switch valve and the boosting The pump works to periodically flush the reverse osmosis filter, and fully flush the reverse osmosis filter through the alternate change of flushing pressure, prolonging the service life of the reverse osmosis filter; reducing the noise during the water purification process.

Description

A reverse osmosis water purifier

technical field

The invention relates to the related technical field of water purifiers, in particular to a reverse osmosis water purifier.

Background technique

Reverse osmosis is a process that uses a pressure higher than the osmotic pressure as the driving force to separate water molecules from solutes from water by using the selective permeability of selective membranes that can only pass through water but not solutes. The reverse osmosis water purifier refers to a machine that uses the above reverse osmosis principle for water treatment.

The reverse osmosis water purifier needs to provide a pressure higher than the osmotic pressure when in use, and the sudden decrease of the user's water flow will lead to a decrease in the water inlet pressure of the reverse osmosis water purifier, which will affect the normal use of the reverse osmosis water purifier . At present, in order to solve the problem of low water inlet pressure for users, a common method is to use a booster pump with a larger flow rate and power, but the cost of this method is high and the noise during operation is relatively large.

When cleaning the reverse osmosis filter element, the currently widely used method is backwashing, that is, using the water flow in the opposite direction to clean the reverse osmosis filter element, but this method will lead to complicated waterways of the reverse osmosis water purifier and increase production costs , The flushing force is so strong that it will affect the service life of the reverse osmosis filter element.

Contents of the invention

The purpose of the present invention is to provide a reverse osmosis water purifier to ensure that the reverse osmosis water purifier can be used normally when the water inlet pressure of the user is too low.

For reaching this purpose, the present invention adopts following technical scheme:

A reverse osmosis water purifier, comprising a purification assembly, a waste water outlet assembly and a water purification outlet assembly, the purification assembly is respectively connected to the waste water outlet assembly and the water purification outlet assembly; the purification assembly includes 5 μm PP cotton filters connected sequentially through pipelines , pre-activated carbon filter, 1 μm PP cotton filter, two booster pumps and reverse osmosis filter; two booster pumps are connected in series and connected to the control system, one of the booster pumps is provided in parallel with it and An electromagnetic switching valve connected to the control system.

Further, the pipeline connecting the pre-activated carbon filter and the 5 μm PP cotton filter is provided with a pressure detector connected to the control system.

Further, the pressure detector is a pressure sensor or a pressure gauge.

Further, the wastewater outlet assembly includes a wastewater ratio switch valve connected to the reverse osmosis filter pipe and connected to the control system.

Further, the wastewater ratio switching valve is provided with a flushing switching valve in parallel with it and connected to the control system.

Further, the water purification outlet assembly includes a pressure storage tank and a water outlet faucet that are both connected to the reverse osmosis filter and arranged in parallel; the connecting pipe between the water outlet faucet and the reverse osmosis filter is provided with Post activated carbon filter for pressurized tanks.

Further, the pressure water storage tank is connected to a control system, and a high-pressure switch connected to the control system is provided on the pipeline connecting the purification component and the water purification outlet component.

Further, the pipeline connecting the pre-activated carbon filter and the 5 μm PP cotton filter is provided with a low pressure switch connected to the control system.

Further, the water inlet pipe of the purification component is provided with a three-way ball valve connected to the control system. Further, the pipeline connecting the pre-activated carbon filter and the 5 μm PP cotton filter is provided with a water inlet switch valve connected to the control system.

Beneficial effects of the present invention: the dynamic pressurization of the water purification channel is realized through two booster pumps connected in series, and the situation that the reverse osmosis water purifier cannot work due to the low water flow pressure of the user is avoided as much as possible; through the control system Control the connection and disconnection of the electromagnetic switch valve and the work of the booster pump to periodically flush the reverse osmosis filter. In each cycle, one booster pump and two booster pumps work alternately to achieve a flushing pressure of "small- A circular flushing effect of "big-small" or "big-small-big", the reverse osmosis filter can be fully flushed through the alternating change of flushing pressure, avoiding the use of complex backwashing structures, and reducing the time spent in the flushing process The damage to the reverse osmosis filter prolongs the service life of the reverse osmosis filter, reduces production and maintenance costs; and reduces the noise generated during the water purification process, reducing the impact of noise on the staff.

Description of drawings

Fig. 1 is a structural principle diagram of the reverse osmosis water purifier of the present invention.

In the picture:

1. Purification component; 11. 5μm PP cotton filter; 12. Pre-activated carbon filter; 13. 1μmPP cotton filter; 14. Booster pump; 15. Reverse osmosis filter; 16. Low pressure switch; 17. Water inlet switch Valve; 18. Three-way ball valve; 19. Electromagnetic switch valve; 2. Clean water outlet assembly; 20. High pressure switch; 21. Outlet faucet; 22. Rear activated carbon filter; 23. Pressure storage tank; ; 31. Waste water ratio switch valve; 32. Flushing switch valve.

detailed description

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

This embodiment provides a reverse osmosis water purifier. As shown in FIG. Waste water and purified water flow into the waste water outlet assembly 3 and the water purification outlet assembly 2 respectively, and the water flowing out of the water purification outlet assembly 2 is purified water, so it can be directly drunk. The water inlet pipe of the purification assembly 1 is provided with a three-way ball valve 18 connected to the control system, and the tap water is divided into two paths through the three-way ball valve 18, one path is normal tap water, and the other path flows into the reverse osmosis water purifier. Under normal circumstances, the three-way ball valve 18 is in a communication state.

The purification assembly 1 includes a 5 μm PP cotton filter 11, a pre-activated carbon filter 12, a 1 μm PP cotton filter 13, two booster pumps 14 and a reverse osmosis filter 15 connected sequentially through pipelines; Remove large particles, rust and sediment in the water, and then remove the odor, color and residual chlorine in the water through the pre-activated carbon filter 12, and then further remove the rust, sediment and large particles in the water through the 1μm PP cotton filter 13 Particulate matter, etc., then enter the reverse osmosis filter 15 to filter after being pressurized by the booster pump 14, and remove heavy metals, bacteria, and organic matter in the water under the pressure of the water.

The two booster pumps 14 are connected in series and connected to the control system, and one of the booster pumps 14 is provided with an electromagnetic switch valve 19 connected in parallel with it and connected to the control system. In order to simplify the pipeline connection, preferably, the electromagnetic switch valve 19 is connected in parallel with the booster pump 14 close to the reverse osmosis filter 15 . When working normally, the electromagnetic switch valve 19 is in a normally open state, that is, the water through another booster pump 14 enters the reverse osmosis filter 15 through the pipeline where the electromagnetic switch valve 19 is located to carry out the next step of purification; When the water machine cannot work because the pressure is too low, the control system will open the electromagnetic switch valve 19 to make it in the closed state, that is, the water flow cannot flow through the pipeline where the electromagnetic switch valve 19 is located, but flows into the booster pump connected in parallel with the electromagnetic switch valve 19 14. The booster pump 14 increases the pressure of the water flow to ensure the normal operation of the reverse osmosis water purifier, and then flows into the reverse osmosis filter 15 for further purification. Through two booster pumps 14 connected in series, the dynamic boosting of the water purification channel is realized, and the situation that the reverse osmosis water purifier cannot work due to too low pressure of the user's water flow is avoided as much as possible.

The water purification outlet assembly 2 includes a pressure water storage tank 23 and a water outlet tap 21 that are connected to the reverse osmosis filter 15 and are arranged in parallel. After the tap 21 is opened, the water is normally discharged. Preferably, the connecting pipe between the water outlet tap 21 and the reverse osmosis filter 15 is provided with a post activated carbon filter 22 connected in series with the water outlet tap 21 and connected in parallel to the pressure water storage tank 23, so that the water that is about to flow out from the water outlet tap 21 Further purification, to further remove the peculiar smell, color and residual chlorine in the water to form clean water.

The pressure water storage tank 23 is connected to the control system, and a high-pressure switch 20 connected to the control system is provided on the pipeline connecting the purification component 1 and the water purification component 2. Specifically, the high-pressure switch 20 is set in the reverse osmosis filter On a water outlet pipeline of the device 15, the high pressure switch 20 is connected in series with the pressure water storage bucket 23 and the water outlet tap 21 respectively, and the pressure water storage bucket 23 is protected by the high pressure switch 20. When the reverse osmosis water purifier purifies water, the high-pressure switch 20 is in a connected state, and the purified water enters the pressure water storage tank 23. When the inlet water pressure is equal to the pressure generated by the pressure water storage tank 23, the reverse osmosis water purifier stops purifying water. The control system will control the high pressure switch 20 to be disconnected; after the faucet 21 is turned on, the pressure in the pipeline connected to the faucet 21, that is, the outlet water pressure is equal to the atmospheric pressure, and the pressure generated in the pressure water storage tank 23 is greater than the atmospheric pressure, and the purified water will pass through the outlet water. The faucet 21 flows out; when the pressure in the pressure water storage tank 23 drops to atmospheric pressure, the clean water will not flow out through the outlet faucet 21. At this time, the control system makes the reverse osmosis water purifier continue to purify the water, and at the same time makes the high pressure switch 20 in the connected state , will continue to repeat the above actions. When the purified water is not needed, the water outlet tap 21 can be closed.

In this embodiment, the pipeline connecting the pre-activated carbon filter 12 and the 5 μm PP cotton filter 11 is provided with a low pressure switch 16 connected to the control system. The booster pump 14 is under low pressure protection through the low pressure switch 16. When the reverse osmosis water purifier purifies water, the low pressure switch 16 is in a connected state. When the pressure in the water flow pipeline of the reverse osmosis water purifier is too low, the control system will control the low pressure switch 16 to disconnect, and perform low pressure protection on the booster pump 14 to prolong the service life of the booster pump 14 .

As a preferred technical solution, the pipeline connecting the pre-activated carbon filter 12 and the 5 μm PP cotton filter 11 is provided with a pressure detector (not shown) connected to the control system, which detects the flow of water in the pipeline by pressure detection Pressure, and send the detection signal to the control system, the control system obtains the pressure value of the water flow in the pipeline, and compares the measured pressure value with the preset value to adjust the working state of the reverse osmosis water purifier. Preferably in this embodiment, the pressure detector is a pressure sensor or a pressure gauge.

When the water flow pressure is lower than the preset value A, the preset value A represents the minimum pressure value at which a booster pump 14 can make the reverse osmosis water purifier work normally. The water purification work of the water machine, the control system will control the electromagnetic switch valve 19 to disconnect and make another booster pump 14 also start to work, thereby ensuring that the reverse osmosis water purifier can carry out the tap water purification work; When the value B is set, the preset value B represents the minimum pressure value at which the two booster pumps 14 can make the reverse osmosis water purifier work. At this time, if the two booster pumps 14 work simultaneously, the reverse osmosis water purifier still cannot At this time, the control system will control the low-pressure switch 16 to close, and simultaneously make the whole reverse osmosis water purifier stop working.

In this embodiment, the wastewater outlet assembly 3 includes a wastewater ratio switch valve 31 connected to the reverse osmosis filter 15 and connected to the control system. During the water purification process of the reverse osmosis water purifier, the waste water ratio switch valve 31 is in a connected state, and the waste water containing impurities generated in the water purification process flows out through the pipeline where the waste water ratio switch valve 31 is located.

The waste water ratio switch valve 31 is provided with a flushing switch valve 32 connected in parallel with it and connected to the control system, and the flushing switch valve 32 is in a communication state during the water purification process of the reverse osmosis water purifier. The reverse osmosis filter 15 of the reverse osmosis water purifier needs to be cleaned regularly during use, and the waste water produced during the cleaning process can flow out through the pipeline where the flush switch valve 32 is located. The amount of waste water produced in the flushing process is relatively large, and most of it flows out through the pipeline where the flushing switch valve 32 is located, and a small part flows out through the pipeline where the waste water ratio switch valve 31 is located.

Preferably, the pipeline connecting the pre-activated carbon filter 12 and the 5 μm PP cotton filter 11 is provided with a water inlet switch valve 17 connected to the control system. When the reverse osmosis water purifier is working, the water inlet switch valve 17 is in a connected state. The control system can control the connection and disconnection of the water inlet switch valve 17 to realize the connection and disconnection of the entire water purification circuit, that is, to control the working state of the reverse osmosis water purifier; at the same time, any component of the reverse osmosis water purifier When a problem occurs, the control system can close the water inlet switch valve 17 to close the entire circuit, which protects the reverse osmosis water purifier.

When the reverse osmosis filter 15 is flushed, the control system controls the connection and disconnection of the electromagnetic switch valve 19 and the operation of the booster pump 14 to realize the flushing of the reverse osmosis filter 15 . Specifically, during the flushing process, a cycle of 5 seconds is used, and one booster pump 14 and two booster pumps 14 are used to work alternately in each cycle to achieve a flushing pressure of "small-big-small" or "big-small". - A cycle flushing effect of "big", the full flushing of the reverse osmosis filter 15 can be realized through the alternating change of the flushing pressure, avoiding the use of a complex backwashing structure, and reducing the damage to the reverse osmosis filter 15 during the flushing process , prolonging the service life of the reverse osmosis filter 15, reducing production and maintenance costs; the flushing time is set to 5s, because the flushing time is too long to cause damage to the reverse osmosis filter, and the flushing time is too short to cause incomplete flushing question.

After many tests, it has been proved that the noise range produced by a reverse osmosis water purifier using a 400G booster pump 14 is 55-58dB(A), while the reverse osmosis water purifier using two 200G booster pumps 14 with the same specifications The noise generated by the machine is in the range of 53-55dB(A), and the latter is about 5% lower than the former, thus reducing the impact of noise on the staff to a certain extent.

Apparently, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, rather than limiting the implementation of the present invention. For those of ordinary skill in the art, on the basis of the above description, other changes or changes in different forms can also be made. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the claims of the present invention.

Claims (10)

1. A reverse osmosis water purifier, comprising a purification assembly (1), a waste water outlet assembly (3) and a water purification outlet assembly (2), and the purification assembly (1) is connected to the waste water outlet assembly (3) and the water purification assembly respectively Water outlet assembly (2); it is characterized in that the purification assembly (1) includes a 5 μm PP cotton filter (11), a pre-activated carbon filter (12), a 1 μm PP cotton filter (13), two Booster pump (14) and reverse osmosis filter (15); Two described booster pumps (14) are connected in series and are all connected to the control system, wherein one of the booster pumps (14) is provided with and connected in parallel with it The electromagnetic switch valve (19) of the control system. 2. The reverse osmosis water purifier according to claim 1, characterized in that, the pipeline connecting the pre-activated carbon filter (12) and the 5 μm PP cotton filter (11) is provided with a valve connected to the control system pressure detector. 3. The reverse osmosis water purifier according to claim 2, wherein the pressure detector is a pressure sensor or a pressure gauge. 4. The reverse osmosis water purifier according to claim 3, characterized in that, the waste water outlet assembly (3) comprises a waste water ratio switch valve connected to the reverse osmosis filter (15) pipeline and connected to the control system (31). 5. The reverse osmosis water purifier according to claim 4, characterized in that the waste water ratio switching valve (31) is provided with a flushing switching valve (32) connected in parallel with it and connected to the control system. 6. The reverse osmosis water purifier according to claim 5, characterized in that, the water purification outlet assembly (2) comprises a pressure storage tank (23) and A water outlet tap (21); the connection pipe between the outlet water tap (21) and the reverse osmosis filter (15) is provided with a post activated carbon filter ( twenty two). 7. The reverse osmosis water purifier according to claim 6, characterized in that, the pressure water storage tank (23) is connected to the control system, connected to the pipeline of the purification component (1) and the water purification component (2) A high voltage switch (20) connected to the control system is provided. 8. The reverse osmosis water purifier according to claim 3, characterized in that, the pipeline connecting the pre-activated carbon filter (12) and the 5 μm PP cotton filter (11) is provided with a valve connected to the control system Low pressure switch (16). 9. The reverse osmosis water purifier according to claim 1, characterized in that, the water inlet pipe of the purification component (1) is provided with a three-way ball valve (18) connected to the control system. 10. The reverse osmosis water purifier according to claim 1, characterized in that, the pipeline connecting the pre-activated carbon filter (12) and the 5 μm PP cotton filter (11) is provided with a valve connected to the control system Water inlet switch valve (17).