Multi-filter-element water purification device

Abstract

The invention discloses a multi-filter-element water purification device which is characterized by comprising a water inlet pump, a water inlet electromagnetic valve, a multi-filter-element filter membrane unit, a water production electromagnetic valve, a backwashing electromagnetic valve, a sewage discharge electromagnetic valve, a backwashing pump, a water production pool and a control unit. Anexternal water source is communicated with a water inlet pipe of the multi-filter-element filter membrane unit sequentially through a water inlet pump and a water inlet electromagnetic valve, a sewagedischarge electromagnetic valve is arranged on a sewage discharge pipe of the multi-filter-element filter membrane unit, and a water production port of the multi-filter-element filter membrane unit is communicated with a water production pool through a water production electromagnetic valve and is communicated with the water production pool sequentially through a backwashing electromagnetic valveand a backwashing pump. The control unit is electrically connected with the water inlet pump, the water inlet electromagnetic valve, the water production electromagnetic valve, the backwashing electromagnetic valve, the sewage discharge electromagnetic valve and the backwashing pump.

Description

technical field [0001] The invention belongs to the technical field of water purification devices, and in particular relates to a multi-filter water purification device. Background technique [0002] In order to meet the water demand of different industries, water purifiers are widely used in industrial and civil fields. The existing single-stage water purifier consists of a membrane shell and a single filter element. The membrane shell is provided with a water inlet and a water outlet. The filter element is placed inside the shell and is generally used for pre-filtering. In order to improve the quality of produced water, generally multiple single-stage water purifiers are connected in series to form a multi-stage filter. The filter element is generally PP cotton, activated carbon, ultrafiltration membrane, nanofiltration membrane or reverse osmosis membrane. Gradually improve. In order to increase the water yield, generally multiple single-stage water purifiers are used i...

AI Technical Summary

Problems solved by technology

However, the cross-flow ceramic membrane filter is suitable for the industrial field. The raw water flows from the inner surface of the ceramic membrane filter tube to the bottom of the cross-flow ceramic membrane filter for circulation, relying on high membrane surface flow velocity to alleviate membrane fouling, high energy consumption, and The sealing requirements for pipelines and equipment are high; the ceramic membrane filter tube needs to be nested and connected with the upper flower plate and the lower flower plate at the same time, and the straightness and installation accuracy of the ceramic membrane filter tube are high; each ceramic membrane filter tube is made of At least two ceramic membrane filter pipes are connected, and the ceramic membrane filter pipes are connected by O-shaped hoops, which may cause a risk of breakage; the filter controls backwashing by pressure difference, and requires high electrical control

[0004] CN107684766B discloses a multi-filter parallel-connected water purifier, which is provided with a plurality of filter element assemblies, a drive mechanism for driving the filter element assemblies, and a brush assembly, which can automatically clean the filter elements, but the water purifier has a complicated structure, a large number of parts, and difficult assembly , not conducive to market application

[0005] CN201404722Y discloses a novel ceramic water filter device, which includes a housing and a plurality of ceramic filter elements connected in parallel. Layers, low space utilization, low water production; the filter element is installed on the filter element mounting plate at the bottom of the cylinder, and the cylinder is deep, resulting in insufficient space for filter element disassembly and assembly operations; each ceramic filter element is connected in series by sub-filter elements, The risk of fracture, adding positioning plates makes the structure more complicated

[0006] To sum up, for the multi-filter water purification device, there are the following defects in the prior art: the structure of the water purifier is complicated, there are many parts, and the assembly is difficult; the space utilization rate is low, and the water production is low;

[0007] In addition, household water purification devices on the market generally do not have a cleaning process, and the filter elements are all disposable. If the water flow rate is lower than a certain level, or the service life is reached, the filter element should be replaced directly.

However, the multi-filter water purification device has multiple built-in filters and produces a large amount of water. It is generally suitable for occasions with large water consumption, such as canteens, factories, railway stations, etc.

After a certain period of use, the filter element will inevitably be polluted, and the water production will gradually decrease. If it is not cleaned in time, the water production may not meet the use requirements

If the filter element is replaced in a short time, the cost will remain high

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