CN211752927U

CN211752927U - Endogenous backwash system of lamination filter

Info

Publication number: CN211752927U
Application number: CN201922376204.6U
Authority: CN
Inventors: 丁南华; 黄璜; 吴鹏飞; 姜华; 丁青; 蒋磊
Original assignee: Jiangsu New Epoch E P Co ltd; Jiangsu Dagua Water Co ltd
Current assignee: Jiangsu New Epoch E P Co ltd; Jiangsu Dagua Water Co ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-10-27
Anticipated expiration: 2029-12-25

Abstract

The utility model relates to an endogenous backwash system of lamination filter, including producing water pipe and backwash pipe, parallel connection multiunit essence is strained the control assembly between producing water pipe and backwash pipe, and the essence is strained the control assembly and is included first valve, lamination filter unit and the three-way valve of establishing ties, and each essence is strained the three-way valve of control assembly and still is passed through pipeline and inlet tube intercommunication jointly, still passes through pipeline and backwash pump's export intercommunication on the inlet tube, and backwash pump's import intercommunication backwash water tank still sets up the backwash valve on backwash pump and water piping connection's pipeline. The utility model discloses an increase backwash pump and backwash water tank, save the system of the extra backwash pipeline of traditional external source backwash and control flap, need not to increase investment cost and take up an area of to ultrafiltration and reverse osmosis system, reduce the cost and the down time of technical improvement, because backwash pressure does not receive water processing system's restriction, under the big rivers scouring of high pressure, the backwash is effectual, and can add chemical reagent and promote greatly the ability of getting rid of biomembrane and scale deposit.

Description

Endogenous backwash system of lamination filter

Technical Field

The utility model relates to a water treatment facilities field especially relates to endogenous backwash system of lamination filter.

Background

The laminated filter used as a fine filtering device is easily polluted by microorganisms, algae and bacteria can be accumulated in the filtering holes between the laminated sheets and secrete mucus to block the filtering holes. In order to solve the problems, the utility model discloses an online external source back flush or self-source back washing mode, but above-mentioned back flush mode all has following problem:

the external source back washing utilizes a back washing pump to realize back washing, but the external source back washing needs to additionally increase a back washing pump, a back washing water tank, a back washing pipeline and a set of back washing control valves, so the equipment investment is higher, and the occupied area is larger.

And (II) the pressure and flow of self-source backwashing are not enough to thoroughly clean the lamination, and the module needs to be disassembled and the lamination needs to be taken out for manual cleaning, so that the water treatment equipment needs to be stopped for a long time, and the water supply safety is seriously influenced.

And (III) the internal source backwashing structure is simple, the equipment investment is less, the occupied area is small, but the backwashing pressure and the flow are limited by the system pressure, and the phenomena of incomplete and uneven flushing are possible to occur.

SUMMERY OF THE UTILITY MODEL

The present applicant has carried out research improvement to above-mentioned current problem, provides the endogenous backwash system of lamination filter, and it need not increase investment cost and take up an area of, and utilizes the utility model and system do not need the people to drop into ozone, have practiced thrift the water resource.

The utility model discloses the technical scheme who adopts as follows:

the laminated filter internal source backwashing system comprises a water production pipe and a backwashing pipe, wherein a plurality of groups of fine filtration control assemblies are connected between the water production pipe and the backwashing pipe in parallel, each fine filtration control assembly comprises a first valve, a laminated filter unit and a three-way valve which are connected in series, the three-way valves of the fine filtration control assemblies are communicated with a water inlet pipe through pipelines, the water inlet pipe is communicated with the outlet of a backwashing pump through a pipeline, the inlet of the backwashing pump is communicated with a backwashing water tank, a backwashing valve is arranged on the pipeline connecting the backwashing pump and the water inlet pipe, a water production valve and an exhaust valve are arranged on the water production pipe, a water inlet valve is arranged on the water inlet pipe, and a drain valve is arranged on the backwashing pipe.

The utility model has the advantages as follows:

the utility model discloses an increase backwash pump and backwash water tank, save the system of the extra backwash pipeline of traditional external source backwash and control flap, need not to increase investment cost and take up an area of to ultrafiltration and reverse osmosis system, reduce the cost and the down time of technical improvement, because backwash pressure does not receive water processing system's restriction, under the big rivers scouring of high pressure, the backwash is effectual, and can add chemical reagent and promote greatly the ability of getting rid of biomembrane and scale deposit.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Wherein: 1. a fine filtration control assembly; 101. a first valve; 102. a lamination filter unit; 103. a three-way valve; 2. a water production valve; 3. an exhaust valve; 4. a water production pipe; 5. a backwash pipe; 6. a water inlet pipe; 7. a backwash water tank; 8. a backwash pump; 9. a back flush valve; 10. a water inlet valve; 11. a blowoff valve.

Detailed Description

The following describes embodiments of the present invention.

As shown in fig. 1, the laminated filter internal source backwashing system comprises a water production pipe 4 and a backwashing pipe 5, a plurality of groups of fine filtration control assemblies 1 are connected between the water production pipe 4 and the backwashing pipe 5 in parallel, each fine filtration control assembly 1 comprises a first valve 101, a laminated filter unit 102 and a three-way valve 103 which are connected in series, the three-way valves 103 of the fine filtration control assemblies 1 are communicated with a water inlet pipe 6 through pipelines, the water inlet pipe 6 is communicated with an outlet of a backwashing pump 8 through pipelines, an inlet of the backwashing pump 8 is communicated with a backwashing water tank 7, a backwashing valve 9 is arranged on the pipeline connecting the backwashing pump 8 and the water inlet pipe 6, a water production valve 2 and an exhaust valve 3 are arranged on the water production pipe 4, a water inlet valve 10 is arranged on the water inlet pipe 6, a blowdown valve 11 is arranged on the backwashing pipe 5, and the backwashing pump 8 adopts a corrosion-.

As shown in figure 1, the utility model discloses produce water process as follows daily: the backwashing valve 9 is closed, the backwashing pump 8 is stopped, the water inlet valve 10 is opened, each three-way valve 103 points to the inlet water, the inlet water passes through each laminated filter unit 102 and then filters out large-particle suspended matters, at the moment, each first valve 101 is opened, so that the produced water is discharged from the water production valve 2, and the exhaust valve 3 can automatically discharge free gas in the system. The water inlet pressure is 2.5-3 kilograms, the water production pressure is about 2.5 kilograms, the pressure difference of the front end and the rear end of the laminated filter unit 102 is 0.1-0.5 kilogram, and the back washing can be automatically started when the pressure reaches 0.5 kilogram.

The backwashing process of the internal source backwashing system of the laminated filter is as follows:

and closing the production line, closing the water inlet valve 10 and the water production valve 2, adding sodium hypochlorite, sodium hydroxide or hydrochloric acid into the backwashing water tank, and adjusting to the required concentration and temperature. And (4) starting a backwashing pump 8, a backwashing valve 9 and a blow-down valve 11, and adjusting backwashing pressure to 4-5 kg as required. Starting an automatic backwashing program, as shown in figure 1, when one laminated filter unit 102 performs backwashing, the other two laminated filter units 102 keep normal water production, in the laminated filter unit 102 performing backwashing, the flow direction of a three-way valve 103 connected with the laminated filter unit 102 is communicated with a backwashing pipe 5 and is discharged through a blowdown valve 11, and as the inflow water is cut off, the pressure of the water outlet end of a first valve 101 is high (2.5 kg), and the pressure of the blowdown end is low (0 kg), so that the water flow changes direction and flows from the water outlet end to the sewage end, thereby realizing backwashing. After the backwashing is finished, the three-way valve 103 connected with the laminated filter unit 102 is redirected to the water inlet pipe 6, so that the laminated filter unit 102 is recovered to the water production flow, and the backwashing process of the rest laminated filter units 102 is consistent with the steps. And after all the laminated filter units are back flushed, closing the back flushing pump, keeping the pressure of the laminated sheets in the laminated filter units for soaking for 5-6 hours, then opening the back flushing pump, and repeating the third step again.

And closing the backwashing pump 8 and the backwashing valve 9 and discharging residual backwashing water. The production line is opened and the water inlet valve 10 and the water production valve 2 are opened.

The backwashing only needs to be stopped when the laminated filter unit 102 is seriously polluted, does not need to close the production line when the pollution condition is not serious, and only needs to change the three-way valve 103 below the laminated filter unit 102 to be cleaned to be communicated with the backwashing pipe 5, so that water flows from the water production end to the sewage end to realize backwashing.

The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made without departing from the basic structure of the invention.

Claims

1. Endogenous backwash system of lamination filter which characterized in that: comprises a water production pipe (4) and a back flushing pipe (5), a plurality of groups of fine filtration control components (1) are connected in parallel between the water production pipe (4) and the back flushing pipe (5), the fine filtration control assembly (1) comprises a first valve (101), a lamination filter unit (102) and a three-way valve (103) which are connected in series, the three-way valve (103) of each fine filtration control assembly (1) is also communicated with the water inlet pipe (6) through a pipeline, the water inlet pipe (6) is also communicated with the outlet of the backwashing pump (8) through a pipeline, the inlet of the backwashing pump (8) is communicated with the backwashing water tank (7), a back washing valve (9) is also arranged on a pipeline connecting the back washing pump (8) and the water inlet pipe (6), a water production valve (2) and an exhaust valve (3) are also arranged on the water production pipe (4), a water inlet valve (10) is further arranged on the water inlet pipe (6), and a blowdown valve (11) is further arranged on the backwashing pipe (5).