CN202569962U - Flushable external pressure type ultrafiltration filter element assembly and water purifier - Google Patents

Abstract

The utility model discloses a washable external pressure ultrafiltration filter element assembly and a water purifier. The ultrafiltration filter element assembly includes a filter shell and a filter element placed in the filter shell, and a raw water general inlet is arranged at the water inlet end of the filter shell , the water outlet end of the filter housing is provided with a total outlet for clean water and a total outlet for sewage discharge. The filter element includes a water purification chamber and a hollow fiber ultrafiltration membrane. The nozzle at one end of the fiber ultrafiltration membrane is closed, and the nozzle at the other end is connected to the water purification outlet. The main water outlet is connected; there is also a sewage chamber between the water purification chamber and the end cover of the water outlet of the filter shell. The sewage chamber is located on the side of the water purification chamber facing away from the water purification chamber. Export connection. The flushable external pressure type ultrafiltration filter element assembly of the utility model can prolong the service life of the filter element, increase the total clean water volume, and reduce the use cost of consumers.

Description

Flushable external pressure ultrafiltration element assembly and water purifier

technical field

The utility model relates to a water treatment device, in particular to a flushable external pressure ultrafiltration element assembly and a water purifier using the flushable external pressure ultrafiltration element assembly.

Background technique

At present, the ultrafiltration filter element is divided into two types: internal pressure type and external pressure type. The internal pressure ultrafiltration filter element has a flushable structure, can be washed repeatedly, and has a long service life; however, the internal pressure ultrafiltration filter element is prone to bursting, and the safety of drinking water cannot be fully guaranteed. The external pressure ultrafiltration filter element has no danger of breaking the hollow fiber ultrafiltration membrane, but it does not have a flushable structure, or it needs to be equipped with a recoil valve and electric control to flush it, while the ultrafiltration membrane only needs sufficient water pressure to work. But, powering up seems very cumbersome.

my country's water quality is worse than that of Europe, America, Japan, South Korea and other countries, and the impurities in the water are about 30% more than those of Japan and other countries. However, the ultrafiltration membrane is easy to pollute, and its service life is drastically reduced in a poor water quality environment. The standard water passing capacity of the ultrafiltration filter element is 2t (current technology), and the current experiment and actual use is generally about 1.5t, and it is less than 1t in the case of poor tap water quality.

At present, the flushable filter element can effectively increase the total water purification volume, prolong the life of the filter element, avoid frequent replacement of the filter element, and reduce the cost of use for consumers, but the flushing effect is not very satisfactory.

Contents of the invention

In view of the above-mentioned current state of the art, the first technical problem to be solved by the utility model is to provide a washable external pressure ultrafiltration element assembly with a long service life, so as to reduce the cost of use for consumers.

The second technical problem to be solved by the utility model is to provide a water purifier using the above flushable external pressure ultrafiltration element assembly.

The technical scheme adopted by the utility model to solve the above-mentioned first technical problem is: a flushable external pressure ultrafiltration filter element assembly, including a filter housing and a filter element placed in the filter housing, one end of the filter housing is an inlet The water end, the other end is the water outlet, the raw water main inlet is set at the water inlet end of the filter shell, and the clean water main outlet and the sewage main outlet are set at the water outlet end of the filter shell, and the filter element includes a filter element formed in the filter shell The water purification chamber and the hollow fiber ultrafiltration membrane silk placed in the water purification chamber, the wall of the water purification chamber is provided with a raw water inlet, a water purification outlet and a sewage outlet, and the tube at one end of the hollow fiber ultrafiltration membrane silk The nozzle at the other end is connected to the water purification outlet, and a water purification chamber is provided between the water purification chamber and the end cover of the water outlet of the filter housing, and the water purification chamber is connected to the water purification outlet and the water purification outlet The main outlet of the water purification is connected; a sewage chamber is also provided between the water purification chamber and the end cover of the water outlet of the filter housing, and the sewage chamber is located on the side of the water purification chamber facing away from the water purification chamber. And the sewage chamber communicates with the sewage outlet and the main sewage outlet.

In one of the embodiments, a first sealing head and a second sealing head are respectively sealed and connected in the water inlet end and the water outlet end of the filter housing, and the inner wall of the filter housing, the first sealing head and the The second head encloses the clean water chamber, and the raw water inlet is set on the first head, the clean water outlet and the sewage outlet are set on the second head, and A partition is arranged between the second head and the end cover of the water outlet of the filter housing, and the partition divides the chamber between the second head and the end cover of the water outlet of the filter housing into the The clean water chamber and the sewage chamber.

In one of the embodiments, there are more than two sewage outlets.

In one of the embodiments, there are three sewage outlets, and the three sewage outlets are evenly distributed along the circumferential direction around the geometric center of the second head.

In one of the embodiments, the hollow fiber ultrafiltration membrane filament is arranged axially along the filter housing, and its two ends are respectively fixed on the first sealing head and the second sealing head.

In one of the embodiments, the raw water inlet and the sewage outlet are arranged eccentrically.

In one of the embodiments, both the first sealing head and the second sealing head are made of cured epoxy resin.

In one of the embodiments, the filter housing includes a cylindrical body with openings at both ends, a first end cap and a second end cap respectively sleeved outside the two ends of the cylindrical body, and the first end cap is provided with The raw water main inlet is provided with a clean water main outlet and a sewage main outlet on the second end cover.

In one of the embodiments, a mechanical flushing switch is installed at the main sewage outlet.

The technical solution adopted by the utility model to solve the above-mentioned second technical problem is: a water purifier, which includes at least one flushable external pressure ultrafiltration element assembly described in any one of the above-mentioned embodiments.

Compared with the prior art, the flushable external pressure ultrafiltration element assembly provided by the utility model is provided with a sewage cavity away from the water purification chamber for collecting sewage, so that the clean water and sewage are separated At the same time, the distance between the hollow fiber ultrafiltration membrane and the pollutants is increased, and the hollow fiber ultrafiltration membrane is far away from the pollutants, which reduces the risk of pollutants returning to pollute the hollow fiber ultrafiltration membrane again, which can prolong the life of the filter element and increase the total Reduce the amount of purified water and reduce the cost of use for consumers, which can play a positive role in the promotion of water purifiers.

In addition, the flushable external pressure ultrafiltration element assembly provided by the utility model can be provided with more than two sewage outlets due to the increased sewage chamber, so that the sewage can be discharged more thoroughly and the flushing effect can be improved.

Description of drawings

Fig. 1 is a schematic cross-sectional structure diagram of a flushable external pressure ultrafiltration element assembly in one embodiment of the present invention.

In the above figures, 100-filter housing, 110-cylinder body, 120-first end cover, 121-general raw water inlet, 130-second end cover, 131-general outlet of purified water, 132-general sewage outlet, 200- Filter element, 210-First head, 211-Raw water inlet, 220-Second head, 221-Water purification outlet, 222-Sewage outlet, 230-Hollow fiber ultrafiltration membrane wire, 240-Clean water chamber, 300-Separation Board, 310-clean water chamber, 320-sewage chamber, 400-flushing switch.

Detailed ways

The utility model is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

In one embodiment of the present invention, a flushable external pressure ultrafiltration filter element assembly is provided. Referring to FIG. 1, the flushable external pressure ultrafiltration filter element assembly in this embodiment includes a filter housing 100 and a The inner filter element 200.

One end of the filter housing 100 is the water inlet, and the other end is the water outlet. At the water inlet of the filter housing 100, a raw water main inlet 121 is provided, and at the water outlet of the filter housing 100, a clean water main outlet 131 and a sewage main are provided. Exit 132. In one of the embodiments, the filter housing 100 includes a cylinder body 110 with both ends open, a first end cap 120 and a second end cap 130 respectively sleeved on the outside of the two ends of the cylinder body 110, and the first end cap 120 is provided with the raw water main inlet 121 , and the second end cover 130 is provided with a clean water main outlet 131 and a sewage main outlet 132 .

The filter element 200 includes a water purification chamber 240 formed in the filter housing 100 and a plurality of hollow fiber ultrafiltration membrane filaments 230 placed in the water purification chamber 240, and the wall of the water purification chamber 240 is provided with The raw water inlet 211 connected to the raw water main inlet 121, the clean water outlet 221 connected to the clean water main outlet 131, and the sewage outlet 222 connected to the sewage main outlet 132, one end of the hollow fiber ultrafiltration membrane filament 230 The mouth of the pipe is closed, and the mouth of the other end communicates with the water purification outlet 221; between the water purification chamber 240 and the end cover of the water outlet of the filter housing 100, there are mutually independent water purification chambers 310 and sewage chambers 320 , the water purification chamber 310 is close to the water purification chamber 240, and communicates with the purification water outlet 221 and the main water purification outlet 131, and the sewage chamber 320 is far away from the water purification chamber 240, and communicates with the sewage outlet 222 communicates with the main sewage outlet 132. Tap water enters the clean water chamber 240 from the raw water main inlet 121 and the raw water inlet 211. Under the pressure of the tap water, the water molecules pass through the hollow fiber ultrafiltration membrane 230, and flow from the inner tube of the membrane to the water outlet, and the impurities are removed. The hollow fiber ultrafiltration membrane wire 230 is blocked inside the water purification chamber 240 . When flushing, the flushing switch 400 is turned on, because the resistance of the sewage discharge outlet is small, and the resistance of the hollow fiber ultrafiltration membrane wire 230 is large, most of the water flows out through the sewage discharge outlet, taking away the impurities left by the water production, so as to flush the hollow fiber ultrafiltration membrane The effect of silk 230. The purified water produced by the filter element 200 is collected in the purified water cavity 310 and discharged through the total purified water outlet 131 . The main function of the sewage chamber 320 is to gather the sewage into one place, so that the clean water and the sewage are separated, and at the same time, the distance between the hollow fiber ultrafiltration membrane and the pollutants is increased, and the hollow fiber ultrafiltration membrane Keep away from pollutants, reducing the risk of pollutants returning to contaminate the hollow fiber ultrafiltration membrane again.

In one of the embodiments, a first seal head 210 and a second seal head 220 are respectively sealed and connected in the water inlet end and the water outlet end of the filter housing 100, and the inner wall of the filter housing 100, the first seal head The head 210 and the second head 220 enclose the clean water chamber 240, and the raw water inlet 211 is arranged on the first head 210, and the The clean water outlet 221 and the sewage outlet 222 are provided with a partition 300 between the second head 220 and the second end cover 130 of the filter housing 100, and the second head is closed by the partition 300. The chamber between the second end cover 130 of the filter housing 100 is divided into the clean water chamber 310 and the sewage chamber 320 .

Preferably, there are more than two sewage outlets 222 . Further preferably, there are three sewage outlets 222 , and the three sewage outlets 222 are evenly distributed along the circumferential direction centered on the geometric center of the second sealing head 220 . The beneficial effect of using more than two sewage outlets 222 is that since each flushing is not as thorough as desired, after each flushing, pollutants will be deposited at the sewage outlets, and the sediment can be removed by increasing the number of sewage outlets. More dispersed, relatively speaking, it is equivalent to increasing the number of flushing, making the sewage discharge more thorough and improving the flushing effect.

Preferably, the hollow fiber ultrafiltration membrane filament 230 is arranged axially along the filter housing, and its two ends are respectively fixed on the first sealing head 210 and the second sealing head 220 .

Preferably, the raw water inlet 211 and the sewage outlet 222 are arranged eccentrically, so as to achieve the purpose of sufficient flushing.

Preferably, the first sealing head 210 and the second sealing head 220 are cured by epoxy resin. Use epoxy resin to block the nozzle of the hollow fiber ultrafiltration membrane wire 250 near the water inlet.

Preferably, the flushing switch 400 is a mechanical switch, so that the entire flushable external pressure ultrafiltration element assembly can work without power on.

In another embodiment of the present invention, a water purifier is provided, which includes the flushable external pressure ultrafiltration element assembly of the above embodiment.

The above-mentioned embodiments only express several implementations of the utility model, and the description thereof is relatively specific and detailed, but it should not be construed as limiting the patent scope of the utility model. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (10)

1. flushable external-compression type ultrafiltration element kit; Comprise filter housing and the filter core that places in this filter housing, an end of said filter housing is a water inlet end, and the other end is the water side; Water inlet end at filter housing is provided with former water general import; Be provided with water purification general export and blowdown general export in the water side of filter housing, said filter core comprises the water purifying chamber that is formed in the said filter housing and places the hollow fiber ultrafiltration membrane silk this water purifying chamber in, the wall of said water purifying chamber to be provided with original water inlet, pure water inlet and blowdown to export; The mouth of pipe sealing of said hollow fiber ultrafiltration membrane silk one end; The other end mouth of pipe is communicated with said pure water inlet, between the end cap of said water purifying chamber and said filter housing water side, is provided with water-purifying cavity, and this water purifying chamber is communicated with said pure water inlet and said water purification general export; It is characterized in that between the end cap of said water purifying chamber and said filter housing water side, also be provided with soil chamber, this soil chamber is positioned at the side of said water-purifying cavity back to said water purifying chamber, and this soil chamber is communicated with said blowdown outlet and said blowdown general export.

2. flushable external-compression type ultrafiltration element kit according to claim 1; It is characterized in that; In the water inlet end of said filter housing and water side, be sealedly connected with first end socket and second end socket respectively; Surround said water purifying chamber by said filter housing inwall, said first end socket and said second end socket, and said first end socket is provided with said original water inlet, said second end socket is provided with said pure water inlet and said blowdown outlet; Between the end cap of said second end socket and said filter housing water side, be provided with dividing plate, the chamber between the end cap of said second end socket and said filter housing water side be divided into said water-purifying cavity and said soil chamber by this dividing plate.

3. flushable external-compression type ultrafiltration element kit according to claim 2 is characterized in that, said blowdown outlet is more than two.

4. flushable external-compression type ultrafiltration element kit according to claim 3 is characterized in that, said blowdown outlet is three, and three blowdown outlets are that the center is along circumferentially being uniformly distributed with the geometric center of said second end socket.

5. flushable external-compression type ultrafiltration element kit according to claim 2 is characterized in that, said hollow fiber ultrafiltration membrane silk axially is provided with along said filter housing, and its two ends are separately fixed on said first end socket and said second end socket.

6. flushable external-compression type ultrafiltration element kit according to claim 2 is characterized in that, said original water inlet and the eccentric setting of said blowdown outlet.

7. flushable external-compression type ultrafiltration element kit according to claim 2 is characterized in that said first end socket and said second end socket form by epoxy resin cure.

8. according to each described flushable external-compression type ultrafiltration element kit in the claim 2 to 7; It is characterized in that; Said filter housing comprises the cylindrical shell of both ends open, is socketed on this cylindrical shell two ends outside first end cap and second end cap respectively; Said first end cap is provided with said former water general import, and said second end cap is provided with water purification general export and blowdown general export.

9. flushable external-compression type ultrafiltration element kit according to claim 8 is characterized in that the place is equipped with the mechanical type flush switch in said blowdown general export.

10. a water purifier is characterized in that: comprise that at least one is like any described flushable external-compression type ultrafiltration element kit in the claim 1 to 9.

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