CN219194714U - A pre-ultrafiltration backwashing system for whole house water purification - Google Patents

Abstract

A pre-ultrafiltration backwashing system for whole-house water purification, comprising a water inlet system, an ultrafiltration filter element, a backwashing system and a drainage system connected in sequence, the ultrafiltration filter element is provided with a water purification end, and the water purification end It is connected with the backwashing system, and the backwashing system is provided with a backwashing end and a flushing assembly connected with the backwashing end, and the flushing assembly is used for backwashing the ultrafiltration filter element. The utility model transports the pure water produced in the water purification process to the pure water storage container, and then flushes the surface of the ultrafiltration filter element through the backwash end on the backwash system, and the flushed waste water is discharged through the drainage system to achieve removal The purpose of the impurities adhering to the ultrafiltration filter element is to prolong the service life of the ultrafiltration filter element, avoid frequent replacement of the ultrafiltration filter element, and greatly facilitate the daily use of users.

Description

A pre-ultrafiltration backwashing system for whole house water purification

technical field

The utility model relates to the technical field of water purification systems, in particular to a pre-ultrafiltration backwashing system for whole house water purification.

Background technique

As people pay more and more attention to water health, water purification equipment is gradually used by the majority of users. In the existing water purification system, the water purification process is usually: pre-filtration device → ultrafiltration device → reverse osmosis device, the raw water becomes purified water containing minerals through the ultrafiltration device, and becomes pure water through the reverse osmosis device. The large particles in the raw water are removed through the pre-filtration device, and the ultra-filtration device intercepts microorganisms, colloids, suspended solids and macromolecular organic matter, etc., and the water filtered by the ultra-filtration device becomes purified water containing minerals, and the reverse osmosis device Remove ions and small molecules in water to become pure water. The ultrafiltration device of the existing water purification system generally only has the conventional positive flushing function, and can only remove part of the impurities adhering to the ultrafiltration device. Usually, the ultrafiltration device is used It needs to be replaced in about 3-6 months. Frequent purchase of filter elements and professional replacement is required, which brings a lot of inconvenience to users and increases the cost of use.

Utility model content

Aiming at the above-mentioned technical problem that the conventional positive flushing of the ultrafiltration filter element in the prior art is not thorough, and the filter element needs to be purchased frequently and replaced by a professional, which increases the cost of use, the utility model adopts a technical solution to solve the technical problem yes:

A pre-ultrafiltration backwashing system for whole-house water purification, comprising a water inlet system, an ultrafiltration filter element, a backwashing system and a drainage system connected in sequence, the ultrafiltration filter element is provided with a water purification end, and the water purification end It is connected with the backwashing system, and the backwashing system is provided with a backwashing end and a flushing assembly connected with the backwashing end, and the flushing assembly is used for backwashing the ultrafiltration filter element.

Further, the flushing assembly includes a flushing end connected to the backwashing end, and the flushing end is sequentially provided with a pure water storage container, a variable frequency pump, a backwashing solenoid valve and a one-way valve.

Further, the flushing assembly also includes a water system connected to the flushing end, the water system is arranged between the variable frequency pump and the backwash solenoid valve, and the water system is provided with a water solenoid valve.

Further, the backwashing system also includes a water production system with one end connected to the clean water end, and the other end of the water production system connected with a pure water storage container.

Further, the water production system is sequentially provided with a solenoid valve of the water production system, a first activated carbon filter element, a booster pump and a reverse osmosis filter element, and the backwash end is arranged between the solenoid valve of the water production system and the water purification end. between.

Further, the water production system further includes a booster pump arranged between the first activated carbon filter element and the reverse osmosis filter element.

Further, the water production system further includes a second activated carbon filter element arranged between the reverse osmosis filter element and the pure water storage container.

Further, the water production system also includes a concentrated water connection end arranged between the drainage system and the reverse osmosis filter element, and the concentrated water connection end is sequentially provided with an adjustable wastewater ratio solenoid valve and a check valve.

Further, the drainage system is connected to the ultrafiltration element, and the drainage system is provided with a flushing solenoid valve.

Further, the water inlet system is sequentially provided with a self-priming valve, a water inlet ball valve and a pre-filter device, and a pre-filter connection end is provided between the drainage system and the pre-filter device, and the pre-filter There is a flushing ball valve at the connection end.

The beneficial effects of the utility model are as follows:

1. The utility model transports the pure water produced in the water purification process to the pure water storage container, and then flushes the surface of the ultrafiltration filter element through the backwash end on the backwash system, and the flushed wastewater is discharged through the drainage system. On the basis of conventional positive flushing, the ultrafiltration filter element is washed by backwashing to achieve the purpose of removing impurities adhering to the ultrafiltration element, prolonging the service life of the ultrafiltration element and eliminating frequent replacement of the ultrafiltration element, which is very convenient daily use by users;

2. The utility model stores pure water during the normal water production process. After the water production is stopped, the stored pure water is used to flush the surface of the ultrafiltration filter element through the backwash end, and the pulse is realized by controlling the start and stop of the flushing solenoid valve. The switching process of flushing, water production and backwashing is fully automatic without manual operation, which greatly facilitates the customer's experience.

In the figure: 1. Water inlet system, 2. Ultrafiltration filter element, 3. Backwash system, 4. Drainage system, 11. Self-priming valve, 12. Water inlet ball valve, 13. Pre-filter device, 21. Water purification terminal , 31. Backwash end, 32. Flush assembly, 33. Water system, 41. Pre-filter connection end, 42. Flush solenoid valve, 321. Flush end, 322. Water system, 331. Water system solenoid valve, 332. First activated carbon filter element, 333. Booster pump, 334. Reverse osmosis filter element, 335. Second activated carbon filter element, 336. First TDS detector, 337. Concentrated water connection end, 338. Second TDS detector, 411 .Rinse ball valve, 3211. Pure water storage container, 3212. Frequency conversion pump, 3213. Backwash solenoid valve, 3214. Check valve, 3221. Water solenoid valve, 3222. Flow meter, 3371. Adjustable waste water ratio solenoid valve, 3372 .Return valve, 32111. First pure water level detector, 32112. Second pure water level detector, 32113. Ozone generator, 32114. Breathing valve for pure water storage container, 32115. Sterilizer.

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is a schematic diagram of a pre-ultrafiltration backwashing system for whole house water purification of the present invention.

Fig. 2 is a schematic diagram of Embodiment 2 of the present utility model.

Detailed ways

Below in conjunction with accompanying drawing, the embodiment of the present utility model is described in detail.

A kind of pre-ultrafiltration backwashing system of whole house water purification as shown in Figure 1, comprises water inlet system 1, ultrafiltration filter element 2, backwash system 3 and drainage system 4 connected in sequence, described ultrafiltration filter element 2 A clean water end 21 is provided, and the clean water end 21 is connected to the backwash system 3, and the backwash system 3 is provided with a backwash end 31 and a flushing assembly 32 connected to the backwash end 31, The flushing assembly 32 is used for backwashing the ultrafiltration element 2 . The utility model transports the pure water produced in the water purification process to the pure water storage container, and then flushes the surface of the ultrafiltration filter element through the backwash end on the backwash system, and the flushed waste water is discharged through the drainage system. On the basis of flushing, the ultrafiltration filter element is washed by backwashing to achieve the purpose of removing impurities adhering to the ultrafiltration element, prolonging the service life of the ultrafiltration element and eliminating frequent replacement of the ultrafiltration element, which greatly facilitates the user daily use.

As shown in Figure 1, a pre-ultrafiltration backwashing system for whole house water purification, the flushing assembly 32 includes a flushing end 321 connected to the backwashing end 31, and the flushing end 321 is sequentially provided with pure water Storage container 3211, frequency conversion pump 3212, backwash solenoid valve 3213 and one-way valve 3214, the flushing assembly 32 also includes a water system 322 connected to the flushing end 321, the water system 322 is set on the frequency conversion pump 3212 Between the backwashing solenoid valve 3213 , the watering system 322 is provided with a watering solenoid valve 3221 , the drainage system 4 is connected to the ultrafiltration element 2 , and the drainage system 4 is provided with a flushing solenoid valve 42 . With this design, when backwashing is performed, the variable frequency pump is turned on, the water solenoid valve on the water system is closed, the flushing solenoid valve and the backwashing solenoid valve are turned on, and the pure water in the pure water storage container passes through the single valve in the flushing system. The reverse valve enters the backwash end, and the pure water washes the surface of the ultrafiltration filter element from the backwash end, and the flushed wastewater is discharged into the drainage system. When the water is produced normally, the flushing solenoid valve and the backwash solenoid valve are closed. With a check valve, the clean water filtered by the ultrafiltration filter element will not enter the pure water storage container from the flushing end. Furthermore, the water system is also equipped with a flow meter. When water is needed, the frequency conversion pump is turned on to provide pressure, and the water electromagnetic The valve is opened, the flushing solenoid valve and the backwashing solenoid valve are closed, the pure water in the pure water storage container can be output as drinking water through the water system, and the flow meter on the water system can measure the flow rate of the output drinking water. It is equipped with a first pure water level detector, a second pure water level detector, an ozone generator, a pure water storage container breathable valve, a sterilizer, and a pure water storage container breathable valve is used to balance the pressure in the pure water storage container, and the ozone The generator sterilizes the outer side of the pure water storage container, and the sterilizer sterilizes the inner side of the pure water storage container. When the pure water in the pure water storage container is less than the first pure water level detector, the water production starts, and when the pure water in the pure water storage container is higher than the second pure water level detector, the water production stops.

A pre-ultrafiltration backwash system for whole house water purification as shown in Figure 1, the backwash system 3 also includes a water production system 33 connected to the water purification terminal 21 at one end, the water production system 33 The other end of the water system is connected to the pure water storage container 3211. The water system 33 is sequentially provided with a water system solenoid valve 331, a first activated carbon filter element 332, a booster pump 333 and a reverse osmosis filter element 334. The backwash end 31 is provided with Between the solenoid valve 331 of the water production system and the water purification terminal 21, the water production system 33 further includes a booster pump 333 arranged between the first activated carbon filter element 332 and the reverse osmosis filter element 334 . With this design, when the solenoid valve of the water system is opened, the purified water filtered from the ultrafiltration filter element flows into the water system. The purified water is first filtered through the first activated carbon filter element and pressurized by the booster pump to make the filtered The water can be transported to the reverse osmosis filter element, the reverse osmosis filter element removes ions and small molecules in the purified water, the purified water is converted into pure water, and the purified pure water is transported to the pure water storage container. The first TDS detector and the second TDS detector, the first TDS detector is set between the first activated carbon filter element and the reverse osmosis filter element, the second TDS detector is set between the reverse osmosis filter element and the second activated carbon filter element, the first TDS detection The detector is used to detect the total amount of various soluble mineral salts contained in the purified water after passing through the first activated carbon filter element. The total amount of mineral salts.

As shown in Figure 1, a pre-ultrafiltration backwashing system for whole house water purification, the water system 33 also includes a second filter element arranged between the reverse osmosis filter element 334 and the pure water storage container 3211 Activated carbon filter element 335. With this design, when the solenoid valve of the water system is opened, the purified water filtered from the ultrafiltration filter element flows into the water system. The purified water is first filtered through the first activated carbon filter element and pressurized by the booster pump to make the filtered The water can be sent to the reverse osmosis filter element, the reverse osmosis filter element removes ions and small molecules in the purified water, the purified water is converted into pure water, and then the pure water is sent to the second activated carbon filter element to further improve the taste, and the purified pure water is sent to Pure water storage container.

As shown in Figure 1, a pre-ultrafiltration backwash system for whole house water purification, the water system 33 also includes a concentrated water connection end arranged between the drainage system 4 and the reverse osmosis filter element 334 337, the concentrated water connection end 337 is provided with an adjustable wastewater ratio solenoid valve 3371 and a check valve 3372 in sequence. With this design, when the water is produced normally, the adjustable wastewater ratio solenoid valve is opened, and the concentrated water generated by the reverse osmosis filter element enters the drainage system through the concentrated water connection end. The setting of the check valve can avoid the ultrafiltration filter element The discharged waste water enters the reverse osmosis filter element through the drainage system.

As shown in Figure 1, a pre-ultrafiltration backwashing system for whole house water purification, the water inlet system 1 is provided with a self-priming valve 11, a water inlet ball valve 12 and a pre-filter device 13 in sequence, and the drainage system 4 and the pre-filter device 13 are provided with a pre-filter connection end 41, and the pre-filter connection end 41 is provided with a flushing ball valve 411. With this design, during the water production process, the self-priming pump is turned on, the raw water enters the pre-filter device from the water inlet system through the water inlet ball valve, and the raw water treated by the pre-filter device enters the ultrafiltration filter element, and the pre-filter The waste water generated by the device will enter the drainage system through the flushing ball valve at the pre-filter connection end.

The implementation mode of this embodiment is as follows:

As shown in Figure 1, the detailed working process of the forward and reverse flushing ultrafiltration water purification system for whole house water purification will be described in detail below through Example 1.

Water production process: when the pure water in the pure water storage container 3211 is lower than the first pure water level detector 32111, the water production starts, and under the action of the self-priming pump 11, the raw water passes through the water inlet ball valve of the water inlet system 1 12 enters the pre-filter device 13, the pre-filter device 13 removes large particles in the raw water, and the water treated by the pre-filter device 13 enters the ultrafiltration filter element 2, and the ultrafiltration filter element 2 removes microorganisms, colloids, and suspended solids and macromolecular organic matter are intercepted, and the water filtered by the ultrafiltration filter element 2 becomes purified water containing minerals. At this time, the electromagnetic valve 331 of the water system is opened, the flushing electromagnetic valve 42 and the backwashing electromagnetic valve 3213 are closed, and the purified water Enter the first activated carbon filter element 332 for filtration, and under the action of the booster pump 333, the treated clean water enters the reverse osmosis filter element 334, and the reverse osmosis filter element 334 removes ions and small molecules in the water, and the purified water is transformed into Pure water, after being treated by the second activated carbon filter element 3342, the pure water enters the pure water storage container 3211. When water is needed, the water solenoid valve 3221 and the frequency conversion pump 3212 are opened, and the backwash solenoid valve 3213 and the flushing solenoid valve 42 are closed. Pure water is discharged from the water system 322 .

During the water production process, the adjustable wastewater ratio solenoid valve 3371 is opened, and the concentrated water generated by the inner membrane of the reverse osmosis filter element 334 enters the drainage system 4 through the concentrated water connection port 337, and the concentrated water is directly discharged.

Positive flushing process: the raw water enters the pre-filter device 13 through the water inlet ball valve 12 of the water inlet system 1, and the water treated by the pre-filter device 13 enters the ultrafiltration filter element 2, and rinses the surface of the ultrafiltration filter element 2. At this time, the solenoid valve 331 of the water system is closed, the backwash solenoid valve 3213 is closed, and the flushing solenoid valve 42 is opened. The flushed wastewater enters the drainage system 4 through the ultrafiltration element 2 and is discharged. Microorganisms, colloids, suspended solids and macromolecular organic matter adhered to the surface of filter element 2.

Backwashing process: when the pure water in the pure water storage container 3211 is higher than the second pure water level detector 32112, the water production is stopped. At this time, the frequency conversion pump 3212 is turned on, the water solenoid valve 3221 is turned off, the backwash solenoid valve 3213 is turned on, the flushing solenoid valve 42 is turned on, the pure water enters from the pure water storage container 3211 to the flushing end 321, and the pure water enters through the one-way valve 3214 To the backwash end 31, pure water washes the microbes, colloids, suspended solids and macromolecular organic matter adhered to the ultrafiltration filter element 2, and the flushed waste water enters the drainage system 4 through the ultrafiltration filter element 2 and is discharged, and is controlled by the backwash solenoid valve 321 The start and stop of the pump realize pulse flushing. After the backwashing is completed, the frequency conversion pump 3212 stops running, and the backwashing solenoid valve 3213 and the flushing solenoid valve 42 are closed. A part of the foreign matter on the surface of the ultrafiltration filter element 2 is removed by multiple forward flushing, and then the microbes, colloids, suspended solids and macromolecular organic matter adhered to the surface of the ultrafiltration filter element 2 are removed by backwashing, which can improve the flushing effect and effectively improve the performance of the ultrafiltration filter element. service life.

As shown in Figure 2, the detailed working process of the forward and reverse flushing ultrafiltration water purification system for whole house water purification will be described in detail below through Example 2.

Water production process: when the pure water in the pure water storage container 3211 is lower than the first pure water level detector 32111, the water production starts, and under the action of the self-priming pump 11, the raw water passes through the water inlet ball valve of the water inlet system 1 12 enters the pre-filter device 13, the pre-filter device 13 removes large particles in the raw water, and the water treated by the pre-filter device 13 enters the ultrafiltration filter element 2, and the ultrafiltration filter element 2 removes microorganisms, colloids, and suspended solids and macromolecular organic matter are intercepted, and the water filtered by the ultrafiltration filter element 2 becomes purified water containing minerals. At this time, the electromagnetic valve 331 of the water system is opened, the flushing electromagnetic valve 42 and the backwashing electromagnetic valve 3213 are closed, and the purified water Enter the first activated carbon filter element 332 for filtration, and under the action of the booster pump 333, the treated clean water enters the reverse osmosis filter element 334, and the reverse osmosis filter element 334 removes ions and small molecules in the water, and the purified water is transformed into Pure water, pure water directly enters the pure water storage container 3211. When water is needed, the water solenoid valve 3221 and the frequency conversion pump 3212 are opened, the backwash solenoid valve 3213 and the flush solenoid valve 42 are closed, and the pure water is discharged from the water system 322.

During the water production process, the adjustable wastewater ratio solenoid valve 3371 is opened, and the concentrated water generated by the inner membrane of the reverse osmosis filter element 334 enters the drainage system 4 through the concentrated water connection port 337, and the concentrated water is directly discharged.

Positive flushing process: the raw water enters the pre-filter device 13 through the water inlet ball valve 12 of the water inlet system 1, and the water treated by the pre-filter device 13 enters the ultrafiltration filter element 2, and rinses the surface of the ultrafiltration filter element 2. At this time, the solenoid valve 331 of the water system is closed, the backwash solenoid valve 3213 is closed, and the flushing solenoid valve 42 is opened. The flushed wastewater enters the drainage system 4 through the ultrafiltration element 2 and is discharged. Microorganisms, colloids, suspended solids and macromolecular organic matter adhered to the surface of filter element 2.

Backwashing process: when the pure water in the pure water storage container 3211 is higher than the second pure water level detector 32112, the water production is stopped. At this time, the frequency conversion pump 3212 is turned on, the water solenoid valve 3221 is turned off, the backwash solenoid valve 3213 is turned on, the flushing solenoid valve 42 is turned on, the pure water enters from the pure water storage container 3211 to the flushing end 321, and the pure water enters through the one-way valve 3214 To the backwash end 31, the pure water washes the microorganisms, colloids, suspended solids and macromolecular organic matter adhered to the ultrafiltration filter element 2, and the flushed waste water enters the drainage system 4 through the ultrafiltration filter element 2 and is discharged, and is controlled by the backwash solenoid valve 321 The start and stop of the pump realize pulse flushing. After the backwashing is completed, the frequency conversion pump 3212 stops running, and the backwashing solenoid valve 3213 and the flushing solenoid valve 42 are closed. A part of the foreign matter on the surface of the ultrafiltration filter element 2 is removed by multiple positive flushes, and then the microbes, colloids, suspended solids and macromolecular organic matter adhered to the surface of the ultrafiltration filter element 2 are removed by backwashing, which can improve the effect of flushing and effectively improve the performance of the ultrafiltration filter element. service life.

The raw water mentioned in the utility model is suitable for tap water in cities and towns. The pre-ultrafiltration and backwashing system of the whole house water purification in the utility model can also be used for the pretreatment system of the laboratory pure water machine and other Commercial occasions.

The above only uses examples to further illustrate the technical content of the utility model, so that readers can understand it more easily, but it does not mean that the implementation of the utility model is limited to this, and any technical extension or re-creation done according to the utility model shall be Protected by the utility model. The scope of protection of the utility model shall be determined by the claims.

Claims (10)

1. A pre-ultrafiltration backwashing system for whole house water purification, comprising a water inlet system (1), an ultrafiltration filter element (2), a backwashing system (3) and a drainage system (4) connected in sequence, its characteristics In that: the ultrafiltration filter element (2) is provided with a clean water end (21), the water clean end (21) is connected to the backwash system (3), and the backwash system (3) is provided with a backwash A flushing end (31), and a flushing assembly (32) connected to the backwashing end (31), the flushing assembly (32) is used for backwashing the ultrafiltration filter element (2). 2. A pre-ultrafiltration backwashing system for whole-house water purification according to claim 1, characterized in that: the flushing assembly (32) includes a flushing end connected to the backwashing end (31) ( 321), the flushing end (321) is sequentially provided with a pure water storage container (3211), a variable frequency pump (3212), a backwash solenoid valve (3213) and a one-way valve (3214). 3. A pre-ultrafiltration backwashing system for whole house water purification according to claim 2, characterized in that: said flushing assembly (32) also includes a water system ( 322), the water system (322) is arranged between the variable frequency pump (3212) and the backwash solenoid valve (3213), and the water system (322) is provided with a water solenoid valve (3221). 4. A pre-ultrafiltration backwashing system for whole-house water purification according to claim 2, characterized in that: the backwashing system (3) also includes a filter with one end connected to the water purification end (21) A water production system (33), the other end of the water production system (33) is connected to a pure water storage container (3211). 5. The pre-ultrafiltration backwashing system of a whole house water purification according to claim 4, characterized in that: the water system (33) is sequentially provided with a water system solenoid valve (331), a first Activated carbon filter element (332), booster pump (333) and reverse osmosis filter element (334), the backwash end (31) is arranged between the solenoid valve (331) of the water system and the water purification end (21) between. 6. The pre-ultrafiltration backwashing system for whole-house water purification according to claim 5, characterized in that: the water production system (33) also includes A booster pump (333) between the reverse osmosis filter elements (334). 7. The pre-ultrafiltration backwashing system for whole house water purification according to claim 5, characterized in that: the water production system (33) also includes The second activated carbon filter element (335) between the pure water storage container (3211). 8. A pre-ultrafiltration backwashing system for whole house water purification according to claim 5, characterized in that: said water production system (33) also includes The concentrated water connection end (337) between the reverse osmosis filter elements (334), the concentrated water connection end (337) is provided with an adjustable wastewater ratio solenoid valve (3371) and a check valve (3372) in sequence. 9. A pre-ultrafiltration backwash system for whole house water purification according to claim 1, characterized in that: the drainage system (4) is connected to the ultrafiltration filter element (2), and the drainage system (4) a flushing solenoid valve (42) is provided. 10. A pre-ultrafiltration backwashing system for whole-house water purification according to claim 1, characterized in that: the water inlet system (1) is sequentially provided with a self-priming valve (11), a water inlet ball valve ( 12) and a pre-filter device (13), a pre-filter connection end (41) is provided between the drainage system (4) and the pre-filter device (13), and the pre-filter connection end (41 ) is equipped with a flushing ball valve (411).

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