CN111115867A

CN111115867A - Water purifier

Info

Publication number: CN111115867A
Application number: CN201811288955.6A
Authority: CN
Inventors: 桂鹏; 李杨敏; 郑跃东
Original assignee: Midea Group Co Ltd; Foshan Shunde Midea Water Dispenser Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Foshan Shunde Midea Water Dispenser Manufacturing Co Ltd
Priority date: 2018-10-31
Filing date: 2018-10-31
Publication date: 2020-05-08

Abstract

The invention discloses a water purifier, which comprises: composite filter element, inlet tube, waste water pipe, pure water pipe, booster pump, water intaking valve and waste water valve. The composite filter element comprises a shell, a central liquid film separating pipe group, a waterway conversion cover group and a post-filtration piece. The central liquid film separating pipe group is formed by winding a plurality of membrane bags around a central pipe group, and the central pipe group comprises a central pipe and a plurality of waste water collecting pipes. The water path conversion cover group is internally provided with a wastewater diversion channel and a filtered water diversion channel, the wastewater diversion channel is respectively communicated with the wastewater collecting pipe and the wastewater outlet on the shell, and the filtered water diversion channel is respectively communicated with the central pipe and the pure water outlet on the shell. The post-filter is arranged in the filtered water flow guide channel. According to the water purifier disclosed by the embodiment of the invention, through the design of the flow channel of the composite filter element, the water channel system of the water purifier can be simplified, the water purifying and filtering efficiency of the water purifier is improved, and the water purifying and filtering effect of the water purifier is improved.

Description

Water purifier

Technical Field

The invention relates to the technical field of water purification, in particular to a water purifier.

Background

In the related technology, the water purification equipment adopts PP cotton, activated carbon and the like as a preposed filter element, and then is connected with an RO filter element and the like in series to form a water system connected by a multi-stage filter element for water purification treatment. The whole system has complex pipeline connection, inconvenient installation and replacement, multi-joint connection and many water leakage risk points. More importantly, the service lives of the multi-stage filter elements are inconsistent, the filter elements required to be replaced by consumers are more than three to five stages, the filter elements are required to be frequently purchased and replaced by professional installation personnel, the experience of the consumers is poor, and the comprehensive cost is high.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the water purifier which is simple in waterway system, high in water purification and filtration efficiency and good in water purification and filtration effect.

The water purifier comprises a composite filter element, a water inlet pipe, a waste water pipe, a pure water pipe, a booster pump, a water inlet valve and a waste water valve, wherein the composite filter element comprises a shell, a central liquid film separating pipe group, a waterway conversion cover group and a rear filter piece, and a raw water inlet, a pure water outlet and a waste water outlet are formed in the shell; the center divides the liquid membrane nest of tubes to establish in the casing, the periphery wall of center branch liquid membrane nest of tubes with inject the raw water runner between the casing, the raw water import intercommunication the raw water runner, the center divides the liquid membrane nest of tubes to include: a central tube set and a plurality of membrane bags, wherein the central tube set comprises a central tube and a plurality of waste water collecting tubes which are arranged at intervals, the plurality of waste water collecting tubes are arranged around the central tube, filter water inlet holes are arranged on the tube wall of the central tube, waste water inlet holes are arranged on the tube wall of the waste water collecting tubes, the membrane bags are provided with a first part which is positioned inside the central tube set and a second part which is positioned outside the central tube set, each waste water collecting tube and the central tube are separated by the first part of at least one membrane bag, the second parts of the plurality of membrane bags form a multilayer membrane assembly which surrounds the central tube set, a filter water circulation cavity is defined in the central tube, and a waste water circulation cavity is defined in the waste water collecting tube; the utility model discloses a water purification device, including water route conversion lid, water route conversion lid group establishes in the casing, water route conversion lid is organized is equipped with waste water diversion channel and drainage diversion channel, waste water diversion channel's both ends communicate respectively waste water circulation chamber waste water outlet, the both ends of drainage diversion channel communicate respectively drainage circulation chamber pure water outlet, rearmounted filter is established in the drainage diversion channel, advance water piping connection on the casing the raw water import, the waste water union coupling on the casing waste water outlet, pure water union coupling on the casing pure water outlet, the booster pump series connection is in on the inlet tube, water intaking valve series connection is in on the inlet tube, waste water valve series connection is in on the waste water pipe.

According to the water purifier disclosed by the embodiment of the invention, through the design of the flow channel of the composite filter element, water can pass through the membrane from the radial direction, the water purifying and filtering efficiency of the composite filter element on the water is improved, and the purpose of purifying water with large flux is realized. Water can carry out multiple purification filtration in composite filter element, can improve the purification and filtration effect of water, and composite filter element core as an organic whole, the convenient change through the runner design to the water purifier, can be so that the water purifier has comparatively simple waterway system, and control is simple, convenient operation.

In addition, the water purifier according to the present invention may further have the following additional technical features:

in some embodiments of the present invention, the water purifier further comprises a pre-filter connected in series to the water inlet pipe.

In some examples of the invention, the pre-filter is connected upstream of the fill valve.

In some examples of the invention, the pre-filter comprises: leading shell and filter screen of straining, leading shell of straining can open and shut, filter screen detachably sets up in the leading shell of straining.

In some embodiments of the invention, the water purifier further comprises a high pressure switch connected in series with the plain water pipe, the high pressure switch being electrically coupled to the water inlet valve.

In some embodiments of the present invention, the water purifier further comprises a check valve connected in series to the plain water pipe.

In some embodiments of the present invention, the water purifier further comprises a water tap connected to an end of the plain water pipe.

In some embodiments of the invention, the waste valve is an adjustable waste valve, and the waste valve is an accumulative flush or a standby flush.

In some embodiments of the invention, the waterway conversion cover set comprises: the water path conversion inlet cover is covered at the end part of the central liquid film distributing pipe group, and is provided with a waste water inlet communicated with the waste water circulating cavity and a filtered water inlet communicated with the filtered water circulating cavity; the water path conversion inner outlet cover is covered on the water path conversion inlet cover, a filtered water flow guide channel is defined between the water path conversion inner outlet cover and the water path conversion inlet cover, and an inner cover port connected with the pure water outlet is arranged on the water path conversion inner outlet cover; waterway conversion goes out the lid, waterway conversion goes out the lid and is in go out in the waterway conversion and cover, the periphery of waterway conversion goes out the lid along with waterway conversion advances to cover and links to each other, waterway conversion goes out the lid in the waterway conversion go out the lid with inject between the waterway conversion advances the lid waste water diversion channel, waterway conversion go out the lid with waterway conversion goes out to inject between the lid and is connected waste water outlet's enclosing cover mouth.

In some embodiments of the invention, the membrane bag is a reverse osmosis membrane, and the outer side of the multilayer membrane assembly rolled by the reverse osmosis membrane is rolled with a front filter cylinder.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a water purifier according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of an embodiment of a composite filter element according to an embodiment of the invention;

FIG. 3 is an enlarged view of a portion of another embodiment of a composite filter element according to the present invention;

FIG. 4 is a schematic top view of a composite filter element according to one embodiment of the invention;

FIG. 5 is a schematic cross-sectional view of a center liquid dividing tube set with covers at both ends according to an embodiment of the present invention, wherein the spirally wound structure of the multilayer film assembly is drawn as a cylinder with omission;

FIG. 6 is a schematic perspective view of a center tube set according to one embodiment of the present invention;

FIG. 7 is a top view of a membrane bag in combination with a center tube and a waste header in accordance with one embodiment of the present invention;

FIG. 8 is a schematic top view of a center liquid dividing tube set in accordance with one embodiment of the present invention;

FIG. 9 is a schematic view of a waterway conversion inlet cover according to an embodiment of the present invention;

FIG. 10 is a cross-sectional schematic view of a waterway conversion access cover in accordance with an embodiment of the present invention;

FIG. 11 is a schematic bottom view of a waterway conversion cover according to one embodiment of the present invention;

fig. 12 is a schematic top view of a waterway conversion access cover according to an embodiment of the present invention.

Reference numerals:

a water purifier 1000,

A composite filter element 100,

A shell 1, a bottle body 11, a bottle cap 12, a raw water inlet 121, a pure water outlet 122, a waste water outlet 123, an inner connecting pipe 124, an outer connecting pipe 125, a sealing ring 128, a raw water flow passage 101,

A central liquid film separating pipe group 2, a central pipe group 20,

A central tube 21, a filtered water inlet hole 211, a filtered water flowing chamber 210,

A waste water header 22, a waste water inlet 221, a waste water circulation chamber 220,

A membrane bag 23, a pre-filter 24,

A waterway conversion cover group 4, a waterway conversion inlet cover 41, an inlet half cylinder 411, an outlet half cylinder 412, a cylinder connecting pipe 413, a waterway conversion inner outlet cover 42, an inner end pipe 421, a waterway conversion outer cover 43, an outer end pipe 431, an inner cover port 44, an outer cover port 45, a wastewater diversion channel 46, a filtered water diversion channel 47, a water outlet pipe 412, a water outlet half cylinder, a cylinder connecting pipe 413, a waterway conversion inner outlet cover 42, an inner end pipe,

A wastewater connecting pipe 5, a wastewater inlet 51, a filtered water connecting pipe 6, a filtered water inlet 61, a filtered water outlet 62,

A post-filter element 7, a sealing plate 9, a plug 91,

A water inlet pipe 301, a waste water pipe 302, a pure water pipe 303, a booster pump 304, a water inlet valve 305, a waste water valve 306, a prefilter 307, a high-pressure switch 308, a one-way valve 309 and a water tap 300.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "radial", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referenced devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, are not to be construed as limiting the present invention.

A water purifier 1000 according to an embodiment of the present invention is described below with reference to fig. 1 to 12.

As shown in fig. 1, a water purifier 1000 according to an embodiment of the present invention includes a composite filter element 100, a water inlet pipe 301, a waste water pipe 302, a pure water pipe 303, a pressurizing pump 304, a water inlet valve 305, and a waste water valve 306.

The composite filter element 100 is a main component of purified water. As shown in fig. 2 and 3, the composite filter element 100 includes a casing 1, a central liquid membrane tube group 2, a waterway conversion cover group 4 and a post-filter 7, wherein the casing 1 is provided with a raw water inlet 121, a pure water outlet 122 and a waste water outlet 123.

The central liquid film separating pipe group 2, the waterway conversion cover group 4 and the post-filtration piece 7 are all arranged in the shell 1, and the shell 1 forms an integral packaging structure of the composite filter element 100 and has the functions of supporting, protecting, positioning and installing internal parts. The housing 1 has various structural forms, and in the example of fig. 2, the housing 1 includes a bottle body 11 having one end opened and a cap 12 coupled to the opened end of the bottle body 11 to seal the bottle body 11, and in this example, as shown in fig. 4, a raw water inlet 121, a pure water outlet 122 and a waste water outlet 123 are provided on the cap 12. In other embodiments, the bottle body 11 may be open at both ends and the bottle cap 12 may be two, or the entire housing 1 may be formed as a structure that is half-split from the middle, and the housing 1 includes only two half-shells, which is not limited herein.

As shown in fig. 2, a raw water flow passage 101 is defined between the outer peripheral wall of the central liquid-dividing tube group 2 and the inner wall of the casing 1, and a raw water inlet 121 communicates with the raw water flow passage 101.

As shown in fig. 5 to 8, the center liquid dividing film tube group 2 includes: a central tube set 20 and a plurality of membrane bags 23, the central tube set 20 comprising a central tube 21 and a plurality of spaced apart waste headers 22, the plurality of waste headers 22 being arranged around the central tube 21. The central tube 21 has filtered water inlet holes 211 in the wall thereof, the waste water header 22 has waste water inlet holes 221 in the wall thereof, the membrane bags 23 have a first portion located inside the central tube group 20 and a second portion located outside the central tube group 20, each waste water header 22 and the central tube 21 are separated by the first portion of at least one membrane bag 23, and the second portions of the plurality of membrane bags 23 form a multi-layered membrane module around the periphery of the central tube group 20. The center pipe 21 defines therein a filtered water flow chamber 210 communicating with the filtered water inlet hole 211, and the waste water header 22 defines therein a waste water flow chamber 220 communicating with the waste water inlet hole 221. That is, the raw water introduced through the raw water inlet 121 flows from the raw water flow passage 101 to the outer circumferential side of the center liquid-dividing membrane tube group 2, and after the raw water passes through the multi-layered membrane module formed by rolling the membrane bag 23, the filtered water filtered through the membrane bag 23 flows into the center tube 21 through the filtered water inlet hole 211 and is collected in the filtered water flow chamber 210, and the waste water that does not pass through the membrane bag 23 flows into the waste water header 22 through the waste water inlet hole 221 and is collected in the waste water flow chamber 220.

As shown in fig. 3, the water path conversion cover group 4 covers one axial end of the central liquid film separating tube group 2, and the post-filter 7 is arranged in the water path conversion cover group 4. Of course, in some embodiments of the present invention, two water path conversion cover sets 4 may also be provided and respectively cover the two axial ends of the central liquid film separating tube set 2, and here, the description is given by only using the case where one water path conversion cover set 4 is provided, and the case where the water path conversion cover sets 4 are provided at both ends can be directly derived from this, and details are not repeated.

Specifically, as shown in fig. 3, a waste water flow guide channel 46 and a filtered water flow guide channel 47 are arranged in the waterway conversion cover group 4, two ends of the waste water flow guide channel 46 are respectively communicated with the waste water flow cavity 220 and the waste water outlet 123, two ends of the filtered water flow guide channel 47 are respectively communicated with the filtered water flow cavity 210 and the pure water outlet 122, and the post-filter 7 is arranged in the filtered water flow guide channel 47.

That is, after the raw water is filtered and separated by the central liquid-separating membrane tube group 2, the obtained filtered water flows into the filtered water guide channel 47 of the water passage switching cap group 4, and the obtained wastewater flows into the wastewater guide channel 46 of the water passage switching cap group 4. The wastewater entering the wastewater diversion channel 46 can be further purified from the wastewater outlet 123 by the post-filter 7 in the filtered water diversion channel 47 to form pure water more suitable for people. It should be noted that the raw water, the filtered water, and the pure water mentioned herein are not limited to the components of water, but are distinguished and named for convenience of describing the water purification process, wherein the water that is not passed through the center liquid-dividing membrane tube group 2 is referred to as raw water, the water that is branched by the center liquid-dividing membrane tube group 2 and flows into the center tube 21 is referred to as filtered water (i.e., water obtained by primary filtration of raw water), the water that is branched by the center liquid-dividing membrane tube group 2 and flows into the waste water header 22 is referred to as waste water, and the water that is filtered by the post-filter 7 is referred to as pure water (i.e., water obtained by secondary.

In the composite filter element 100 according to the embodiment of the present invention, the structural design of the composite filter element 100 allows raw water to pass through the multilayer film bag 23 in the radial direction after entering the raw water flow passage 101 and then to be wound into a multilayer film assembly. Most of water flow entering the raw water flow channel 101 flows along the circumferential direction and the axial direction and is dispersed on the periphery of the central liquid film separating pipe group 2, and in the process of flowing along the circumferential direction and the axial direction, the water flow scours impurities on the surface of the film, so that the surface of the film can be prevented from being blocked, and the filtering capacity is improved.

Then raw water passes through the multilayer membrane assembly along the radial direction, most of water flow is close to the membrane penetrating along the normal direction, the positive pressure of the membrane penetrating is large, and the water flow path in the radial direction is short. That is, the filtered water obtained by filtering through the central liquid separation membrane tube group 2 can quickly flow out of the central liquid separation membrane tube group 2.

Compared with the scheme of passing through the central liquid film separating pipe group 2 along the axial direction, the scheme greatly reduces the resistance of filtering water flow and shortens the time of water flow passing through the film, thereby realizing the purpose of preparing purified water with large flux and improving the water purification efficiency.

Through the center divide the setting of liquid membrane nest of tubes 2 and water route conversion lid group 4, can effectively separate pure water and waste water, and further set up rearmounted 7 of filtering in water route conversion lid group 4, improve the purification degree, can satisfy people's needs better.

It should be noted that in the conventional purification structure, the filter element with the post-filtering member 7 and the filter element with the central liquid membrane tube group 2 are usually connected in series and connected by a pipeline. However, the embodiment of the invention improves the scheme, and the post-filter element 7 is integrated in the composite filter element 100 by using the waterway conversion cover group 4, so that the pipeline connection is saved, the whole purification path is shortened, and the filter element cost is saved. And the composite filter element 100 is integrated, so that the structure of the purification system is greatly simplified. When a user needs to disassemble, assemble and replace the core, the operation is convenient, and the user experience is improved.

In some embodiments, as shown in fig. 2, the composite filter element 100 further includes a pre-filter member 24, the pre-filter member 24 has a cylindrical shape with both ends open, the pre-filter member 24 is disposed outside the membrane bag 23, and the raw water flow passage 101 is annular and surrounds the outside of the pre-filter member 24. The raw water is filtered by at least three layers to form pure water, and the quality of the formed pure water is higher.

Alternatively, when a plurality of membrane bags 23 are rolled to form a multi-layered membrane module, the pre-filter 24 may be rolled concentrically with the multi-layered membrane module to form a pre-filter cartridge for ease of installation. The pre-filter 24 can be made of non-woven fabric, PP cotton and carbon fiber, and can purify and filter raw water in advance, effectively intercept iron filings, silt, organic matters, residual chlorine and the like in water.

In some embodiments, the pre-filter 24 is wrapped around the multi-layer membrane module without an intermediate frame therebetween, i.e., the outer ends of the multi-layer membrane module are directly attached to the inner wall of the pre-filter 24, which saves parts.

In some embodiments of the present invention, the cap 12 is non-releasably attached to the body 11, for example, the cap 12 may be welded to the body 11.

In some embodiments of the present invention, a cap 12 is openably and closably coupled to the bottle body 11, and a waterway conversion cap assembly 4 is coupled between the cap 12 and the central liquid distribution tube assembly 2. The water path conversion cover group 4 and the central liquid film separating pipe group 2 are detachably connected in the shell 1, so that possibility and convenience are provided for core replacement, and compared with a traditional disposable filter element assembly, the replacement cost is reduced.

Here, the form of the opening and closing design may be a covering form, a threaded connection form, or a plug-in fastening form, and is not limited specifically here. In the example of fig. 2, the cap 12 is threaded onto the body 11 with a seal 128 therebetween. Optionally, the seal ring 128 is an O-ring, and at least one seal ring 128 is provided.

Further, waterway conversion cover group 4 is connected to bottle cap 12, and waterway conversion cover group 4 can rotate relative to bottle cap 12. The openable bottle cap 12 inevitably needs to be tightly covered or loosened by rotation in the opening and closing process, and even when the bottle cap 12 is screwed on the bottle body 11, the waterway conversion cap group 4 can rotate relative to the bottle cap 12, so that the waterway conversion cap group 4 cannot be damaged. In addition, the bottle cap 12 can press the waterway conversion cover group 4 and the central liquid film separating pipe group 2 in the process of pressing and screwing, so that the assembling quality of the internal structure is improved, and the waterway conversion cover group 4 needs to be arranged to be rotatable relative to the bottle cap 12.

In the embodiment of the present invention, as shown in fig. 5 and 8, the plurality of film bags 23 of the center liquid dividing film tube group 2 are formed in a cylindrical shape after the center tube group 20 is wound. The plurality of film bags 23 are rolled in one direction, so that a spiral outer flow passage is formed between the second parts of two adjacent film bags 23, and a spiral inner flow passage is formed inside the second part of each film bag 23. Advantageously, the inner flow passage and the outer flow passage are both provided with separation nets, so that the diaphragms are prevented from being tightly attached.

It is conceivable that the raw water is filtered through one membrane each time when flowing into the center liquid membrane tube group 2 in the radial direction, and thus the filtering effect of the center liquid membrane tube group 2 is secured. Most of the impurities are blocked in the outer flow passage by the membrane sheet in the process of raw water flowing. Here, the impurities in the outer flow channels are also driven to flow in a spiral direction toward the center tube group 20 during the flow of the water toward the center tube group 20, and finally reach the waste water header 22.

The central liquid film separating pipe group 2 adopts a lateral flow water-saving film, and water flows in through a lateral flow, so that the surface flow velocity of the film is improved, the higher pure water recovery rate is ensured, and the longer service life of the film bag 23 is prolonged.

Alternatively, the central liquid membrane separation tube group 2 can be a reverse osmosis membrane element and also can be an ultrafiltration membrane component. Namely, the membrane bag 23 can be made of a reverse osmosis membrane known in the market, or an ultrafiltration membrane known in the market. The principles and techniques of ultrafiltration and reverse osmosis are well known to those skilled in the art and will not be described in detail herein.

In some embodiments, one axial end of the central liquid film separating tube group 2 is sealed by the waterway conversion cover group 4, so that raw water is prevented from directly flowing to the central tube group 20 from the end face, and filtering water and waste water are prevented from mixing at the end face.

Specifically, as shown in fig. 2, the other axial end of the central liquid-dividing tube group 2 is sealed by the sealing plate 9, so that the raw water is prevented from directly flowing to the central tube group 20 from the end face, and the filtered water and the waste water are prevented from mixing at the end face.

Furthermore, the waterway conversion cover group 4 and the closing plate 9 are respectively glued at the axial end part of the central liquid film separating pipe group 2, so that the assembly is convenient, and the membrane can be prevented from being damaged. Optionally, the waterway conversion cover group 4 and the closing plate 9 are respectively connected to the end of the central liquid-separating membrane tube group 2 in a sealing manner through a circle of hot melt adhesive.

Specifically, the central tube 21 and the waste water header 22 are through tubes, and the sealing cover 9 is provided with a plurality of plugs 91 which are respectively connected to the ends of the central tube 21 and the waste water header 22 in an inserting manner, so as to play a role in sealing and avoid the mixing of filtered water and waste water.

In some embodiments of the present invention, as shown in fig. 3, waterway conversion cover set 4 includes waterway conversion inlet cover 41, waterway conversion inlet cover 42, and waterway conversion outlet cover 43. The waterway conversion inlet cover 41 is covered on the end part of the central liquid film separating pipe group 2, the waterway conversion inlet cover 41 is provided with a waste water inlet 51 communicated with the waste water circulation cavity 220, and the waterway conversion inlet cover 41 is provided with a filtered water inlet 61 communicated with the filtered water circulation cavity 210. The waterway conversion inner outlet cover 42 is covered on the waterway conversion inlet cover 41, a filtered water diversion channel 47 is defined between the waterway conversion inner outlet cover 42 and the waterway conversion inlet cover 41, and an inner cover port 44 connected with a pure water outlet 122 is arranged on the waterway conversion inner outlet cover 42. Waterway conversion outlet cover 43 is covered on waterway conversion inner outlet cover 42, the periphery of waterway conversion outlet cover 43 is connected with waterway conversion inlet cover 41, wastewater diversion channels 46 are defined among waterway conversion outlet cover 43, waterway conversion inner outlet cover 42 and waterway conversion inlet cover 41, and outer cover port 45 connected with wastewater outlet 123 is defined between waterway conversion outlet cover 43 and waterway conversion inner outlet cover 42.

That is, wastewater may enter the waterway conversion cap assembly 4 through the wastewater inlet 51 from the wastewater flow chamber 220, and filtered water may enter the waterway conversion cap assembly 4 through the filtered water inlet 61 from the filtered water flow chamber 210. The waterway conversion inlet cover 41 and the waterway conversion inner outlet cover 42 may separate filtered water from waste water. A filtered water flow guide 47 is defined between the waterway conversion inlet cap 41 and the waterway conversion inner outlet cap 42, the filtered water flows along the filtered water flow guide 47 toward the inner cap port 44, the inner cap port 44 is connected to the pure water outlet 122, and pure water can flow out from the pure water outlet 122. A waste water guide channel 46 is defined between the waterway conversion outlet cover 43, the waterway conversion inner outlet cover 42 and the waterway conversion inlet cover 41, waste water flows to the outer cover port 45 along the waste water guide channel 46, the outer cover port 45 is connected with the waste water outlet 123, and waste water can flow out from the waste water outlet 123.

Through the cooperation of the waterway conversion inlet cover 41, the waterway conversion inner outlet cover 42 and the waterway conversion outer outlet cover 43, a filtered water flow guide channel 47 which can be provided with the post-filtration member 7 is defined, and the wastewater and the filtered water which are branched by the central liquid-dividing membrane tube group 2 can be respectively guided to the pure water outlet 122 and the wastewater outlet 123, so that the structure is simple.

The waterway conversion cover group 4 has very strong assembly performance, greatly simplifies the assembly process and shortens the assembly time.

In some embodiments of the present invention, as shown in fig. 9 and 10, waterway switch inlet cover 41 includes an inlet half-cylinder 411, an outlet half-cylinder 412, and a cylinder connection 413.

The inlet half cylinder 411 is open at one end toward the center liquid dividing tube group 2, the waste water inlet 51 and the filtered water inlet 61 are provided in the inlet half cylinder 411, one end of the center liquid dividing tube group 2 is fitted to the inner peripheral side of the inlet half cylinder 411, and the water passage switching outlet cover 43 is connected to the outer peripheral side of the inlet half cylinder 411.

The outlet half cylinder 412 is opened at the end far away from the central liquid film separating tube group 2, the outlet half cylinder 412 is spaced apart from the inlet half cylinder 411, the waterway conversion inner outlet cover 42 is connected with the peripheral wall of the outlet half cylinder 412, and the outlet half cylinder 412 is provided with a filtered water outlet 62. The cylinder connecting pipe 413 is connected between the inlet half cylinder 411 and the outlet half cylinder 412, and one end of the cylinder connecting pipe 413 is connected to the filtered water inlet 61 and the other end is connected to the filtered water outlet 62.

That is, the inlet half cylinder 411 and the outlet half cylinder 412 are open on opposite sides, and are connected by a cylinder connecting pipe 413. The hole of the inlet half cylinder 411 communicating with the cylinder connecting pipe 413 is a filtered water inlet 61, and the hole of the outlet half cylinder 412 communicating with the cylinder connecting pipe 413 is a filtered water outlet 62. And a waste water inlet 51 is arranged at the position of the inlet end half cylinder 411 deviating from the cylinder connecting pipe 413, and the waste water inlet 51 is not communicated with the cylinder connecting pipe 413.

The reason why the inlet-end half cylinder 411 is formed in a cylindrical shape with one open end is to facilitate the fitting with the end of the center liquid-distributing pipe group 2, thereby increasing the reliability of the sealing of the end of the center liquid-distributing pipe group 2. And the cylindrical inlet half-cylinder 411 can tightly hoop the rolled multilayer film assembly to avoid scattering.

The outlet half cylinder 412 is formed into a cylinder with an open end, so that the outlet half cylinder 412 is conveniently connected with the waterway conversion inner outlet cover 42, and the outlet half cylinder 412 is combined with the waterway conversion inner outlet cover 42, so that the contact area is large, the sealing performance is good, and the streaming is avoided.

The outlet half cylinder 412 is spaced apart from the inlet half cylinder 411 to facilitate the flow of wastewater, and the wastewater guide channel 46 formed at this time is communicated with the wastewater inlet 51 of the inlet half cylinder 411.

Here, it is mentioned that connecting the waterway conversion outlet cover 43 to the outer peripheral side of the inlet half cylinder 411 can facilitate positioning and assembling on the one hand, and can form a good sealing connection between the waterway conversion outlet cover 43 and the inlet half cylinder 411 on the other hand. It can be understood that, during the water flow filtration process, the water pressure in the raw water channel 101 is obviously significantly higher than the internal water pressure of the central liquid-dividing membrane tube group 2 and the water pressure in the waste water diversion channel 46 because of the large pressure loss of the membrane. At this time, the water path switching outlet cover 43 is fitted around the outer periphery of the inlet half cylinder 411, and the water path switching outlet cover 43 is brought into close contact with the outer periphery of the inlet half cylinder 411 by the pressure difference, thereby achieving a good sealing effect.

As can be seen in fig. 9 and 3, a stepped surface is formed on the wall of the inlet half cylinder 411 so as to be positioned with the waterway conversion outlet cover 43.

Optionally, the inlet half cylinder 411, the outlet half cylinder 412 and the cylinder connecting pipe 413 are integrally formed, so that the structural sealing performance is easily guaranteed.

Of course, in the embodiment of the present invention, the inlet half cylinder 411, the outlet half cylinder 412, and the cylinder connecting pipe 413 may also be connected by welding, and even the three may be connected by screw threads on the premise of ensuring the sealing performance, which is not limited herein.

In the embodiment of the present invention, as shown in fig. 3, the waterway conversion inside and outside cover 42 is formed in an inverted water channel shape, the waterway conversion outside cover 43 is also formed in an inverted water channel shape, and the dimension of the waterway conversion outside cover 43 is larger than that of the waterway conversion inside and outside cover 42, so that the waterway conversion outside cover 43 can be buckled on the waterway conversion inside and outside cover 42, and a certain gap can be formed between the waterway conversion outside and inside cover to form the waste water diversion channel 46.

In fig. 3, the lower end periphery of the water passage switching inner outlet cover 42 is connected to the peripheral wall of the outlet half cylinder 412, and the upper end opening of the water passage switching inner outlet cover 42 constitutes the inner cover port 44.

The lower peripheral edge of the water path conversion outlet cover 43 is connected with the peripheral wall of the inlet half cylinder 411, the upper peripheral edge of the water path conversion outlet cover 43 is sleeved outside the upper peripheral edge of the water path conversion inner outlet cover 42, and an annular opening formed between the two forms the outer cover opening 45.

Preferably, as shown in fig. 9, the radial dimension of the inlet half-cylinder 411 is greater than the radial dimension of the outlet half-cylinder 412. With this arrangement, the lower end of the waterway conversion outlet cover 43 needs to be larger than the lower end of the waterway conversion inner outlet cover 42, so as to facilitate the assembly of the waterway conversion cover group 4.

In one embodiment, as shown in fig. 6, the thickness of the joint between the outlet half cylinder 412 and the waterway conversion inner outlet cover 42 is reduced, and the cross section of the contact surface of the outlet half cylinder and the waterway conversion inner outlet cover is formed into a Z-shape, so that the contact area can be increased, and the sealing effect can be improved.

Optionally, waterway conversion internal outlet cover 42 is welded to waterway conversion inlet cover 41, for example, waterway conversion internal outlet cover 42 is screwed to outlet half-cylinder 412. The reason for this is that the pure water outlet 122 communicates with the inside of the waterway conversion internal outlet cover 42, and the composite filter cartridge 100 is disabled in case of water leakage. Therefore, the welding connection can ensure the connection strength and improve the sealing durability.

In one embodiment, waterway conversion outlet cover 43 is adhesively connected to waterway conversion inlet cover 41, and the waterway conversion outlet cover 43 is adhesively connected, so that on one hand, the process is simple, the cost is low, and the processing is fast, and on the other hand, the waterway conversion outlet cover 43 can be tightly attached to waterway conversion inlet cover 41 due to the difference between the inside and the outside of waterway conversion outlet cover 43.

Specifically, as shown in fig. 3, the filtered water flow guide 47 is disposed coaxially with the central liquid-distributing pipe group 2, and the waste water flow guide 46 is externally fitted over the filtered water flow guide 47. The filtered water filtered in the central liquid film-separating pipe group 2 flows to the filtered water flow guide channel 47 in a straight line, and the water amount of the filtered water is usually far larger than that of the waste water, which is beneficial to the flow efficiency of the filtered water. In addition, the arrangement increases the discharge resistance of the wastewater, and the increased water pressure of the wastewater causes more filtered water in the wastewater to flow to the filtered water flow guide channel 47 in the central liquid membrane tube assembly 2, thereby improving the purification rate. The cross section of each part of each waterway conversion cover group 4 can be conveniently and basically circular by the arrangement, and the waterway conversion cover group is convenient to manufacture.

In addition, in the structure of the waterway conversion cover group 4, the waterway conversion cover group 4 is assembled from inside to outside when being assembled, and the post-filter member 7 is arranged in the central filtered water guide channel 47, so that the post-filter member 7 is easy to assemble and position. In fig. 3, the diameter of the filtered water flow guiding channel 47 between the outlet half cylinder 412 and the waterway conversion outlet cover 43 is large, and the water flow passing performance is not affected by the post-filter 7.

Of course, in other embodiments of the present invention, the waterway conversion cover set 4 may also take other shapes, for example, the waterway conversion cover set 4 forms a barrel shape, the middle of the barrel shape is separated by a partition (similar to the middle of a mandarin duck chafing dish is separated by a partition), half of the barrel shape is used for flowing waste water, and the other half is used for flowing filtered water.

In some examples of the present invention, as shown in fig. 10 and 11, a side of the waterway conversion inlet cover 41 facing the central liquid-distributing pipe group 2 is provided with a waste water connection pipe 5 and a filtered water connection pipe 6, a pipe orifice of the waste water connection pipe 5 is a waste water inlet 51, and a pipe orifice of the filtered water connection pipe 6 is a filtered water inlet 61. The waste water circulation cavity 220 is communicated with the waste water connecting pipe 5, and waste water flows out of the waste water circulation cavity 220 and then enters the waterway conversion cover group 4 along the waste water connecting pipe 5. The filtered water flowing chamber 210 is communicated with the filtered water connecting pipe 6, and the filtered water flows out from the filtered water flowing chamber 210 and then enters the waterway conversion cover group 4 along the filtered water connecting pipe 6.

Specifically, as shown in fig. 3, the central tube 21 is inserted into the filtered water pipe 6, and the waste water header 22 is inserted into the waste water pipe 5, so that the waterway conversion cover group 4 and the central liquid film separating tube group 2 have a centering function, and are prevented from deflecting, and can be connected through the insertion tube, thereby ensuring the sealing performance of the connection part and avoiding series flow.

Specifically, the waste water connection pipes 5 are plural, and the plural waste water headers 22 are inserted in the plural waste water connection pipes 5 in a one-to-one correspondence. The one-to-one correspondence provides for convenient positioning of the center tube set 20.

Of course, the structure of the present invention is not limited to this, for example, the filtering water connection pipe 6 and the waste water connection pipe 5 may be eliminated on the premise that the sealing performance is ensured, the central pipe 21 is directly inserted into the filtering water inlet 61, and the waste water header 22 is directly inserted into the waste water inlet 51.

In some embodiments of the present invention, as shown in fig. 3, the bottle cap 12 is provided with an inner connection pipe 124 and an outer connection pipe 125, the outer connection pipe 125 is sleeved on the inner connection pipe 124, the waterway conversion inner outlet cover 42 is connected to the inner connection pipe 124, and the waterway conversion outer outlet cover 43 is connected to the outer connection pipe 125. Thus, the inner cover port 44 can be conveniently communicated with the pure water outlet 122, and the outer cover port 45 can be conveniently communicated with the waste water outlet 123. Wherein, a space is arranged between the external connecting pipe 125 and the internal connecting pipe 124, and water can flow through.

Specifically, as shown in fig. 3, the waterway conversion inner outlet cover 42 is formed into a tubular shape at an end away from the central liquid membrane separation tube group 2, and the tubular shape is called an inner end tube 421, and the inner end tube 421 is sleeved on the inner tube 124, and an inner sealing ring (not shown) is arranged between the two, which is beneficial to improving the sealing performance.

Specifically, as shown in fig. 3, the waterway conversion outlet cover 43 is formed in a tubular shape at an end away from the central liquid membrane separation tube group 2, and the tubular shape is referred to as an outer end tube 431, and the outer end tube 431 is sleeved on the outer connection tube 125 with an outer sealing ring (not shown) therebetween, which is beneficial to improving the sealing performance.

In some embodiments of the invention, the post-filter 7 is a carbon core in the shape of a cake or rod. The carbon core can effectively remove organic matters, residual chlorine and other radioactive substances in water, can also intercept particles larger than 10-20 microns in liquid, and has double effects of purifying and filtering water. The post-filter 7 is formed into a cake shape or a rod shape, so that the assembly and the fixation are convenient.

Of course, in the embodiment of the present invention, the post-filter member 7 may be formed in other shapes, and the post-filter member is made of other filtering materials, for example, a multi-layer film structure, or a cylindrical structure, so that the filtered water passes through the post-filter member from the inside to the outside for filtering, which is not limited in particular.

Referring to fig. 1, a water inlet pipe 301 is connected to a raw water inlet 121 of the housing 1, a waste water pipe 302 is connected to a waste water outlet 123 of the housing 1, and a pure water pipe 303 is connected to a pure water outlet 122 of the housing 1. The booster pump 304 is connected in series to the water inlet pipe 301, and the booster pump 304 can boost the pressure of the water. The water inlet valve 305 is connected in series with the water inlet pipe 301, and the water inlet valve 305 can control the on-off of the water inlet pipe 301. The waste valve 306 is connected in series with the waste 302, and the waste valve 306 can control the on-off of the waste 302.

That is, when the water inlet valve 305 is opened, water can flow from the water inlet pipe 301 to the raw water inlet 121, and when the water flows to the booster pump 304, the booster pump 304 can increase the pressure of the water, which is advantageous for the composite filter element 100 to obtain high pressure water, thereby performing water purification filtration, after the water flows into the composite filter element 100 from the raw water inlet 121, the composite filter element 100 performs water purification filtration, and separates the water into pure water and wastewater, the pure water flows from the pure water outlet 122 to the pure water pipe 303, thereby facilitating the use of the user, and the wastewater flows from the wastewater outlet 123 to the wastewater pipe 302. When the waste water valve 306 is opened, waste water can be discharged along the waste water pipe 302, which is beneficial to the discharge of waste water, and when the waste water valve 306 is closed, water can only flow out from the pure water pipe 303, so that the pressure of water in the composite filter element 100 is increased, the water purification and filtration efficiency of the composite filter element 100 to water is improved, the discharge of waste water is reduced, and water resources are saved.

According to the water purifier 1000 of the embodiment of the invention, the water purification efficiency of the composite filter element 100 is improved by designing the flow channel of the composite filter element 100, and large-flux water purification can be realized. The water can be purified and filtered in the composite filter element 100 for multiple times, and the purification quality of the water can be improved. The composite filter element 100 is integrated into a whole, is convenient to replace, and can enable the water purifier 1000 to have a simpler waterway system through the design of a flow channel of the water purifier 1000, so that the water purifier is simple to control and convenient to operate.

In some embodiments of the present invention, as shown in fig. 1, the water purifier 1000 further comprises a pre-filter 307, and the pre-filter 307 is connected to the water inlet pipe 301 in series, so as to further improve the filtering effect. And the pre-filter 307 is arranged at the upstream of the composite filter element 100, so that the entering of large-particle impurities is reduced, and the service life of the composite filter element 100 can be prolonged.

Optionally, the prefilter 307 includes a front filter housing and a filter screen, the front filter housing can be opened and closed, and the filter screen is detachably disposed in the front filter housing. The filter screen can remove impurities such as large particles, suspended matters, rust, silt and the like in water, and reduce the purifying and filtering pressure of the composite filter element 100. It is understood that the pre-filter 307 may also be filter cotton, other filter elements, etc., and is not limited herein. Wherein, leading the shell of straining is opened, can make things convenient for the filter screen to install in leading the shell of straining or demolish from leading the shell of straining, and leading the shell of straining is closed can carry on spacingly to the filter screen, prevents that the filter screen is not hard up, reduces the filter effect. The dismouting filter screen can conveniently wash the filter screen, prevents that too much impurity from blockking in the position of filter screen, increases the resistance of hydrologic flow.

Alternatively, as shown in fig. 1, the pre-filter 307 is connected upstream of the water inlet valve 305, where upstream refers to the position where the first of the two positions flows upstream in the flow direction of water. By providing the pre-filter 307 upstream of the inlet valve 305, the pre-filter 307 may filter some of the contaminants, preventing excess contaminants from entering the inlet valve 305 and blocking the inlet valve 305.

Alternatively, as shown in fig. 1, the water flows through the pre-filter 307 on the water inlet pipe 301, then flows through the water inlet valve 305, and the water passing through the water inlet valve 305 flows to the booster pump 304, so that the pre-filter 307 can protect the water inlet valve 305 and the booster pump 304 from being clogged with impurities at the same time.

The water purifier 1000 can withstand a certain water pressure, and when the water pressure is too high, the water purifier 1000 is easily damaged, and it is necessary to avoid the water pressure of the water purifier 1000 from being too high. In some embodiments of the present invention, as shown in FIG. 1, the water purifier 1000 further comprises a high pressure switch 308 connected in series to the plain water pipe 303, the high pressure switch 308 being electrically coupled to the water inlet valve 305. That is, the high pressure switch 308 may detect the water pressure of the deionized water pipe 303 and may set a preset value, and when the water pressure of the deionized water pipe 303 is higher than the preset value, the high pressure switch 308 may control the water inlet valve 305 such that the water inlet valve 305 is closed, thereby stopping the operation of the water purifier 1000.

In some embodiments of the present invention, as shown in FIG. 1, the water purifier 1000 further comprises a check valve 309 connected in series to the deionized water pipe 303, so that the water in the deionized water pipe 303 cannot flow back after passing through the check valve 309, thereby preventing the reverse flow in the composite filter element 100.

In some embodiments of the present invention, as shown in FIG. 1, the water purifier 1000 further comprises a faucet 300 connected to the end of the deionized water pipe 303, and water flows out through the faucet 300 to be taken by a user. Here, check valve 309 is established at the upstream of tap 300, when stopping to get water, can make check valve 309 to the position of tap 300 can remain part of water, can the person of facilitating the use open tap 300 water and can flow out, need not to wait for, improves user's experience and feels, simultaneously, can also prevent that impurity in the air from getting into pure water pipe 303 in, blocks pure water pipe 303.

Alternatively, the switch of the water tap 300, the water inlet valve 305 and the booster pump 304 are electrically connected, the water tap 300 is opened, the water inlet valve 305 is also opened, the booster pump 304 starts to work, and the composite filter element 100 starts to purify filtered water, so that the operation is simple and the control is convenient.

In some embodiments of the present invention, the waste valve 306 is an adjustable waste valve 306, and the flow rate of the waste water is controlled by adjusting the size of the waste valve 306. When the large-flow water flows through the waste water valve 306, impurities are easily washed away, and the waste water valve 306 is prevented from being invalid.

Optionally, the waste water valve 306 is configured to be flushed in an accumulation mode or in a standby mode, so that waste water can flow out after being accumulated to a certain extent, frequent opening and closing to reduce filtering efficiency is avoided, impurities are also prevented from being accumulated, and the service life of the membrane bag 23 is ensured. Of course, the waste valve 306 may have other embodiments, which are not limited herein.

Other configurations of the water purifier 1000, such as the booster pump 304, etc., and operations thereof, according to embodiments of the present invention, are known to those of ordinary skill in the art and will not be described in detail herein.

In the description herein, references to the description of the term "some embodiments," "some examples," or "optionally," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A water purifier, characterized by comprising:

a composite filter element, the composite filter element comprising:

the device comprises a shell, a water tank;

the center divides the liquid membrane nest of tubes, the center divide the liquid membrane nest of tubes to establish in the casing, the periphery wall of center branch liquid membrane nest of tubes with inject the raw water runner between the casing, raw water import intercommunication the raw water runner, the center divides the liquid membrane nest of tubes to include: a central tube set and a plurality of membrane bags, wherein the central tube set comprises a central tube and a plurality of waste water collecting tubes which are arranged at intervals, the plurality of waste water collecting tubes are arranged around the central tube, filter water inlet holes are arranged on the tube wall of the central tube, waste water inlet holes are arranged on the tube wall of the waste water collecting tubes, the membrane bags are provided with a first part which is positioned inside the central tube set and a second part which is positioned outside the central tube set, each waste water collecting tube and the central tube are separated by the first part of at least one membrane bag, the second parts of the plurality of membrane bags form a multilayer membrane assembly which surrounds the central tube set, a filter water circulation cavity is defined in the central tube, and a waste water circulation cavity is defined in the waste water collecting tube;

the water path conversion cover group is arranged in the shell, a wastewater diversion channel and a filtered water diversion channel are arranged in the water path conversion cover group, two ends of the wastewater diversion channel are respectively communicated with the wastewater circulation cavity and the wastewater outlet, and two ends of the filtered water diversion channel are respectively communicated with the filtered water circulation cavity and the pure water outlet;

the post-filtration member is arranged in the filtered water flow guide channel; and the number of the first and second groups,

the water inlet pipe is connected with the raw water inlet on the shell;

a waste pipe connected to the waste outlet on the housing;

the pure water pipe is connected with the pure water outlet on the shell;

the booster pump is connected to the water inlet pipe in series;

the water inlet valve is connected to the water inlet pipe in series;

the waste water valve is connected in series to the waste water pipe.

2. The water purifier according to claim 1, further comprising: the prefilter, prefilter series connection is in on the inlet tube.

3. The water purifier of claim 2 wherein the pre-filter is connected upstream of the inlet valve.

4. The water purifier according to claim 2, wherein the pre-filter comprises: leading shell and filter screen of straining, leading shell of straining can open and shut, filter screen detachably sets up in the leading shell of straining.

5. The water purifier according to claim 1, further comprising: and the high-pressure switch is connected to the pure water pipe in series and is electrically connected with the water inlet valve.

6. The water purifier according to claim 1, further comprising: the check valve is connected in series with the pure water pipe.

7. The water purifier according to claim 1, further comprising: a water tap connected with the tail end of the pure water pipe.

8. The water purifier of claim 1 wherein the waste valve is an adjustable waste valve, the waste valve being an accumulation mode flush or a standby flush.

9. The water purifier of claim 1, wherein the waterway conversion cover set comprises:

the water path conversion inlet cover is covered at the end part of the central liquid film distributing pipe group, and is provided with a waste water inlet communicated with the waste water circulating cavity and a filtered water inlet communicated with the filtered water circulating cavity;

the water path conversion inner outlet cover is covered on the water path conversion inlet cover, a filtered water flow guide channel is defined between the water path conversion inner outlet cover and the water path conversion inlet cover, and an inner cover port connected with the pure water outlet is arranged on the water path conversion inner outlet cover;

waterway conversion goes out the lid, waterway conversion goes out the lid and is in go out in the waterway conversion and cover, the periphery of waterway conversion goes out the lid along with waterway conversion advances to cover and links to each other, waterway conversion goes out the lid in the waterway conversion go out the lid with inject between the waterway conversion advances the lid waste water diversion channel, waterway conversion go out the lid with waterway conversion goes out to inject between the lid and is connected waste water outlet's enclosing cover mouth.

10. The water purifier according to claim 1, wherein the membrane bag is a reverse osmosis membrane, and a pre-filter cartridge is wound outside the multi-layer membrane module wound with the reverse osmosis membrane.