CN101254967A - Pure water machine and its working method - Google Patents

Abstract

The invention relates to a water treatment device, in particular to a water-saving long-acting pure water machine with automatic flushing and double-membrane purification and a working method of the water purifier. The pure water machine includes a water inlet, a water outlet, a filter device arranged between the water inlet and the water outlet, a pre-treatment device, a post-treatment device, an automatic flushing device and a concentrated water discharge port, a booster pump, and a pre-treatment device. The device is an ultrafiltration membrane filter, the post-treatment device is a reverse osmosis filter, and the filter device has an N-KDF filter element; the automatic flushing device includes a set between the concentrated water discharge port and the pre-treatment device concentrated water port and between the concentrated water discharge port and the pre-treatment device. Two solenoid valves between the concentrated water ports of the aftertreatment device. The working method of the pure water machine is that the solenoid valve connected to the pre-processing device works regularly, and each work is alternately opened and closed, and the number of opening and closing of each work is at least twice; the solenoid valve connected to the post-processing device is always Work, its working mode is alternately open and close.

Description

Pure water machine and its working method

technical field

The invention relates to a water treatment device, in particular to a water-saving long-acting pure water machine with automatic flushing and double-membrane purification and a working method of the water purifier.

Background technique

In view of the increasingly serious pollution of the natural environment and ecology, people can no longer drink tap water directly, and must be purified before drinking. Chinese patent document CN1686834A discloses a water-saving, leak-proof pure water machine, which stores and supplies concentrated water according to the demand for washing water by adding a concentrated water pressure storage tank device, or directly sets a water tank connected by a concentrated water pressure switch. Concentrated water uses a valve to achieve 100% recycle of concentrated water. However, this patented technology has the following disadvantages as the prior art: the reverse osmosis pretreatment filter element has a short service life and needs to be replaced frequently; the pretreatment precision is limited, the reverse osmosis membrane cannot be effectively protected, and the membrane is easily fouled; The design may be too fine, which leads to low precision of water purification treatment in the prior art. The working method of the existing pure water machine is that water enters from one side of the filter element and exits from the other side, and the dirt accumulates in the filter element; this working method is not only difficult to guarantee the quality of pure water, but also the life of the filter element is very short.

Contents of the invention

The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art, and provide a water-saving long-acting pure water machine with automatic flushing and double-membrane purification. Another object of the present invention is to provide a working method of a pure water machine that can ensure good quality of pure water and long service life of the filter element.

The purpose of the present invention can be achieved through the following technical solutions:

The pure water machine includes a water inlet, a water outlet, and a filter device arranged between the water inlet and the water outlet, and is characterized in that it also includes a pre-processing device, a post-processing device, an automatic flushing device and a concentrated water discharge port, and the pre-processing device It is set between the water inlet and the filter device, the post-processing device is set between the filter device and the water outlet, and the automatic flushing device is set between the concentrated water discharge port and the pre-treatment device and the post-treatment device; it also includes a booster pump, increasing The pressure pump is set between the filter device and the post-treatment device; the pre-treatment device is an ultrafiltration membrane filter, the post-treatment device is a reverse osmosis filter, and the filter device has an N-KDF filter element; the automatic flushing device includes Two solenoid valves between the outlet and the concentrated water port of the pre-treatment device and between the concentrated water discharge port and the concentrated water port of the after-treatment device.

The pure water machine is characterized in that a water inlet electromagnetic valve is arranged between the pre-treatment device and the filter device.

The pure water machine is characterized in that a post-filter is provided between the post-processing device and the water outlet, and the post-filter has an activated carbon filter element.

The pure water machine is characterized in that the water outlet port of the post-processing device is also connected to a pure water storage tank through a high-pressure switch.

The pure water machine is characterized in that it also includes a one-way valve connected between the water inlet port of the booster pump and the concentrated water port of the post-processing device. The one-way valve is set so that water can only flow to the water inlet port of the booster pump.

The pure water machine is characterized in that a flushing water storage tank is connected between the water outlet port of the pretreatment device and the water inlet solenoid valve.

The pure water machine is characterized in that the N-KDF filter element includes a filter element shell, and the inner cavity of the filter element shell is filled with a filter material made of diatomite copper and zinc materials, and a sponge layer is arranged on the water inlet side of the filter material axially. A non-woven fabric is arranged on the water outlet side of the axial direction.

The pure water machine is characterized in that the pre-treatment device is an ultrafiltration membrane filter, the post-treatment device is a reverse osmosis filter, and the filter device has an N-KDF filter element; Two solenoid valves between the concentrated water port and the concentrated water port of the post-processing device; a water inlet solenoid valve is provided between the pre-processing device and the filter device; a post-filter is provided between the post-processing device and the water outlet, and the post-processing The filter has an activated carbon filter element; the water outlet port of the post-processing device is also connected to a pure water storage tank through a high-pressure switch; it also includes a one-way valve connected between the water inlet port of the booster pump and the concentrated water port of the post-processing device. The setting direction is such that water can only flow to the water inlet port of the booster pump; a flushing water storage tank is also connected between the water outlet port of the pre-treatment device and the water inlet solenoid valve; the N-KDF filter element includes a filter element shell, and the inner cavity of the filter element shell is filled with silicon The filter material made of algae earth copper and zinc materials, the sponge layer is arranged on the water inlet side of the filter material axially, and the non-woven fabric is arranged on the water outlet side of the filter material axially.

The purpose of the present invention can also be achieved through the following technical solutions:

The working method of the pure water machine is used for the pure water machine described in any one of the preceding claims, characterized in that the solenoid valve connected to the pre-treatment device works regularly, and each work is alternately opened and closed, and each work The number of opening and closing times is at least twice; the solenoid valve connected to the post-processing device is always working, and its working mode is alternately opening and closing.

The working method of the pure water machine is characterized in that the solenoid valve connected to the pre-treatment device works once every 4 to 12 hours, and works for 20 seconds each time. The action sequence is to open for 2 seconds and then close for 2 seconds, a total of 5 cycles; The solenoid valve of the post-processing device is always working, and the action sequence is every 30 to 120 seconds, and it is opened for 4 to 20 seconds.

The working method of the pure water machine is characterized in that the solenoid valve connected to the pre-treatment device works once every 8 hours, and works for 20 seconds each time. The action sequence is to open for 2 seconds and then close for 2 seconds, a total of 5 cycles; The solenoid valve of the device is always working, and the action sequence is 60 seconds apart, open for 5 seconds.

The pure water machine involved in the present invention has an automatic flushing device, which regularly flushes the filter element of the pre-processing device and flushes the filter element of the post-processing device in real time, and the concentrated water is discharged through the concentrated water discharge port. Compared with the existing technology, the filter element is not easy to block, so that a finer filter element can be used to achieve a better water treatment effect; on the other hand, due to the automatic flushing device, the fouling can be removed in time, thus prolonging the reverse osmosis process. filter life.

The working method of the pure water machine involved in the present invention maintains the cleanliness of the filter element through regular flushing of the pre-processing device and real-time flushing of the post-processing device. Water quality and filter life.

Compared with the prior art, the present invention also has the following advantages:

By replacing the traditional PP filter element with an ultrafiltration membrane (or microfiltration membrane), the ultrafiltration membrane (or microfiltration membrane) can be flushed forward by tap water, and can also be reverse flushed by an external flushing water storage tank to make it It can maintain the flux of the ultrafiltration membrane and prolong the service life. The N-KDF filter element is used to replace the traditional activated carbon filter element, and silicon-phosphorus crystals are added to prevent the formation of scale, so that it can adapt to different water quality in various places, thus greatly prolonging the service life of the pretreatment filter element, and truly eliminating the need to replace the filter element. Influent water is first treated by ultrafiltration membrane (or microfiltration membrane) filter and then enters reverse osmosis membrane filter, so that the water quality of reverse osmosis membrane can be greatly optimized, fouling of reverse osmosis membrane can be avoided, and the service life of reverse osmosis membrane can be greatly extended. service life. Compared with activated carbon filter, N-KDF filter element has the advantages of longer life and no bacteria breeding. The invention adopts intermittent flushing and the post-processing device can be equipped with a concentrated water reuse device, so it also has the advantage of saving water.

Description of drawings

Fig. 1 is a schematic diagram of the first embodiment of the present invention.

Fig. 2 is a circuit diagram of a first embodiment of the present invention.

Fig. 3 is a schematic diagram of a second embodiment of the present invention.

Fig. 4 is a circuit diagram of a second embodiment of the present invention.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings.

The first embodiment of the present invention is a pure water machine. With reference to Fig. 1 and Fig. 2, the pure water machine comprises a water inlet 101, a water outlet 102, a filtering device 106 arranged between the water inlet 101 and the water outlet 102, and Including a pre-processing device 104, a post-processing device 108, an automatic flushing device and a concentrated water discharge port 103, the pre-processing device 104 is arranged between the water inlet 101 and the filtering device 106, and the post-processing device 108 is arranged between the filtering device 106 and the water outlet 102 Among them, the automatic flushing device is set between the concentrated water discharge port 103 and the pre-processing device 104 and the post-processing device 108; a booster pump 107 is also included, and the booster pump 107 is set between the filtering device 106 and the post-processing device 108. The pre-treatment device 104 is an ultrafiltration membrane filter, the post-treatment device 108 is a reverse osmosis filter, and the filter device 106 has an N-KDF filter element; the automatic flushing device includes two electromagnetic valves, which are connected to the concentrated water discharge port 103 and the pre-treatment The solenoid valve 114 between the concentrated water port 1043 of the device 104, and the solenoid valve 113 connected between the concentrated water discharge port 103 and the concentrated water port 1083 of the aftertreatment device 108; Water solenoid valve 105; post-processing device 108 and water outlet 102 are provided with post-filter 111, and post-processing device 111 has activated carbon filter element; post-processing device 108 water outlet port also connects a pure water storage water by high pressure switch 109 Tank 110, the pure water storage tank 110 has a pressurized air bag; it also includes a one-way valve 112 connected between the water inlet port 1071 of the booster pump 107 and the concentrated water port 1083 of the aftertreatment device 108, and the setting direction of the one-way valve 112 is Water can only flow to the water inlet port of the booster pump 107, and the one-way valve 112 is a one-way valve with a flow-limiting function, which also plays a role in stabilizing the pressure in the pure water machine. The electromagnetic valve 114 of the pure water machine of the present invention is connected to the pre-processing device 104 and works once every 4 to 12 hours, and works for 20 seconds each time. The action sequence is to open for 2 seconds and then close for 2 seconds, a total of 5 cycles; The electromagnetic valve 113 of the device 108 is always working, and the action sequence is to open for 4 to 20 seconds at intervals of 30 to 120 seconds.

The working process of the double-membrane purification and automatic flushing water purifier is as follows:

1. Normal water production status

The tap water first enters the ultrafiltration membrane filter through the water inlet and is filtered, and the water outlet from the ultrafiltration membrane filter is filtered through the water inlet solenoid valve and the N-KDF filter element, and then enters the booster pump. After pressurization, the water enters the reverse osmosis membrane filter. The pure water effluent of the reverse osmosis membrane filter enters the pure water storage tank and is connected to the pure water outlet. The road is connected to the flow limiting control device---the water inlet of the wastewater ratio (one-way valve 112) inlet booster pump device, so as to realize the recovery and utilization of concentrated water.

2. Ultrafiltration flushing state

This model adopts the ultrafiltration intermittent automatic flushing and discharging valve, which is connected in parallel to the circuit without interference with other circuits. Then it will automatically open the rinse.

The second embodiment of the present invention is also a pure water machine. With reference to Fig. 3 and Fig. 4, the difference between this embodiment and the first embodiment lies in the A flushing water storage tank 301 is connected between them, and the flushing water storage tank 301 has a pressure air bag, which can ensure the stability of flushing water pressure and water supply. Another difference from the first embodiment of the present invention is that the solenoid valve 314 connected to the pre-processing device is controlled by the main electric control device 391, while the solenoid valve 313 connected to the post-processing device is controlled by the secondary electric control device 392. The connection mode of the switch 309, the water inlet solenoid valve 305 and the booster pump 307 is the same as that of the first embodiment.

The third embodiment of the present invention is a working method of a pure water machine. Using the pure water machine described in the first embodiment of the present invention, the opening of the solenoid valve connected to the pre-treatment device and the solenoid valve connected to the post-treatment The specific work sequence is that the solenoid valve connected to the pre-processing device works once every 8 hours, and works for 20 seconds each time. The action sequence is to open for 2 seconds and then close for 2 seconds, a total of 5 cycles; after connection The solenoid valve of the processing device is always working, and the action sequence is 5 seconds at intervals of 60 seconds. With this setting, the pure water machine of the first embodiment of the present invention is set, and the trial proves that the filter element does not accumulate dirt, and the quality of pure water and the service life of the filter element are improved.

The above descriptions are only preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the claims of the present invention shall fall within the scope of the claims of the present invention.

Claims (11)

1, water purification machine, comprise water-in, water outlet, be arranged at the filtration unit between water-in and the water outlet, it is characterized in that, also comprise pretreating device, after-treatment device, automatic flushing device and concentrated water discharge mouth, pretreating device is arranged between water-in and the filtration unit, after-treatment device is arranged between filtration unit and the water outlet, and automatic flushing device is arranged between concentrated water discharge mouth and pretreating device and the after-treatment device; Also comprise topping-up pump, topping-up pump is arranged between filtration unit and the after-treatment device; Pretreating device is the ultrafiltration membrance filter device, and after-treatment device is a reverse osmosis filter, and filtration unit has the N-KDF filter core; Automatic flushing device comprises and is arranged between concentrated water discharge mouth and the pretreating device concentrated water spout respectively and two magnetic valves between concentrated water discharge mouth and the after-treatment device concentrated water spout.

2, according to the described water purification machine of claim 1, it is characterized in that, be provided with entering water electromagnetic valve between pretreating device and the filtration unit.

According to the described water purification machine of claim 1, it is characterized in that 3, be provided with post-filter between after-treatment device and the water outlet, post-filter has activated carbon cartridge.

According to the described water purification machine of claim 1, it is characterized in that 4, after-treatment device water outlet port also connects a pure water water tank by high-voltage switch gear.

5, according to the described water purification machine of claim 1, it is characterized in that, also comprise the check valve that is connected between topping-up pump entry port and the after-treatment device concentrated water spout, the direction that is provided with of check valve is that water can only flow to the topping-up pump port of intaking.

6, according to the described water purification machine of claim 2, it is characterized in that, also be connected a flushing water tank between pretreating device water outlet port and the entering water electromagnetic valve.

According to the described water purification machine of claim 1, it is characterized in that 7, the N-KDF filter core comprises filter-core shell, the filter-core shell inner chamber is filled the filtrate of being made by diatomite copper, Zinc material, the filtrate spongy layer that a side is provided with of axially intaking, and axial water outlet one side of filtrate is provided with non-woven fabrics.

According to the described water purification machine of claim 1, it is characterized in that 8, pretreating device is the ultrafiltration membrance filter device, after-treatment device is a reverse osmosis filter, and filtration unit has the N-KDF filter core; Automatic flushing device comprises two magnetic valves that are connected between concentrated water discharge mouth and dense water end (W.E.) mouth of pretreating device and the dense water end (W.E.) mouth of after-treatment device; Be provided with entering water electromagnetic valve between pretreating device and the filtration unit; Be provided with post-filter between after-treatment device and the water outlet, post-filter has activated carbon cartridge; After-treatment device water outlet port also connects a pure water water tank by high-voltage switch gear; Also comprise the check valve that is connected between topping-up pump entry port and the after-treatment device concentrated water spout, the direction that is provided with of check valve is that water can only flow to the topping-up pump port of intaking; Also be connected a flushing water tank between pretreating device water outlet port and the entering water electromagnetic valve; The N-KDF filter core comprises filter-core shell, and the filter-core shell inner chamber is filled the filtrate of being made by diatomite copper, Zinc material, the filtrate spongy layer that a side is provided with of axially intaking, and axial water outlet one side of filtrate is provided with non-woven fabrics.

9, water purification machine method of work, be used for aforementioned any described water purification machine of claim, it is characterized in that, connect the magnetic valve timing working of pretreating device, each work is the opening and closing that hocket, and the opening and closing number of times of each work is at least secondary; The magnetic valve that connects after-treatment device is then worked always, and its mode of operation is the opening and closing that hocket.

10, water purification machine method of work according to claim 9 is characterized in that, worked once in the every interval of magnetic valve that connects pretreating device in 4 to 12 hours, worked 20 seconds at every turn, and sequence of operation was closed 2 seconds for drawing back 2 seconds again, totally 5 circulations; The magnetic valve that connects after-treatment device is being worked always, and sequence of operation is every interval 30 to 120 seconds, opens 4 to 20 seconds.

11, water purification machine method of work according to claim 10 is characterized in that, worked once in the every interval of magnetic valve that connects pretreating device in 8 hours, worked 20 seconds at every turn, and sequence of operation was closed 2 seconds for drawing back 2 seconds again, totally 5 circulations; The magnetic valve that connects after-treatment device is being worked always, and sequence of operation is every interval 60 seconds, opens 5 seconds.

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