CN206045525U - Filter assembly - Google Patents

Abstract

The utility model discloses a filter element assembly, which comprises: a filter element joint, a filter cylinder body, a water-saving membrane, a lower end cover of the water-saving membrane and an upper end cover of the water-saving membrane, wherein the filter element joint has a raw water joint and a pure water joint And the waste water joint; the upper end of the filter element cylinder is open and the lower end is closed, and the upper end of the filter element cylinder is closed by the filter element joint; the water-saving membrane is set in the filter element cylinder; the lower end cover of the water-saving membrane covers the lower end of the water-saving membrane; the upper end of the water-saving membrane The cover covers the upper end of the water-saving membrane, and the upper end cover of the water-saving membrane has a waste water outlet and a pure water outlet, the waste water outlet is connected to the waste water joint, and the pure water outlet is connected to the pure water joint. According to the filter element assembly of the utility model, the waste water production rate can be reduced, and the effect of water saving can be realized. At the same time, the installation space of the filter element assembly can be reduced, the pipeline can be simplified, and the risk of water leakage can be reduced.

Description

Filter assembly

technical field

The utility model relates to the technical field of water purification equipment, in particular to a filter element assembly.

Background technique

The concept of water saving is in line with the status quo of the industry and is the development trend of technology. However, when the water purification equipment in related technologies produces 1 ton of pure water, it will produce 1 ton of waste water, causing great waste.

Utility model content

The utility model aims at at least solving one of the technical problems existing in the prior art. Therefore, the utility model is to provide a filter element assembly, which can simplify pipelines and save water.

According to the filter element assembly of the present invention, it includes: a filter element joint, the filter element joint has a raw water joint, a pure water joint and a waste water joint; a filter element cylinder, the upper end of the filter element cylinder is open and the lower end is closed, the filter element cylinder body The upper end is closed by the filter element joint; a water-saving membrane, the water-saving membrane is set in the filter element cylinder; a lower end cover of the water-saving membrane, the lower end cover of the water-saving membrane covers the lower end of the water-saving membrane; The upper end cover of the membrane, the upper end cover of the water-saving membrane covers the upper end of the water-saving membrane, the upper end cover of the water-saving membrane has a waste water outlet and a pure water outlet, the waste water outlet is connected to the waste water joint, and the pure water The outlet communicates with the pure water connector.

According to the filter element assembly of the utility model, by applying the water-saving film, the waste water production rate can be reduced to realize the effect of water saving, and at the same time, the installation space of the filter element assembly can be reduced, the pipeline can be simplified, and the risk of water leakage can be reduced.

In some embodiments, the filter element assembly further includes: a waterway conversion part, the waterway conversion part is connected to the upper end of the water-saving membrane, the outer side of the waterway conversion part defines a raw water channel, and the raw water channel is connected to the The raw water joint communicates with and extends to the outer periphery of the water-saving membrane, and the waste water outlet and the pure water outlet on the upper end cover of the water-saving membrane are both located inside the waterway conversion piece.

Further, the lower end of the waterway conversion piece is sleeved on the upper end of the water-saving membrane, and the upper end of the waterway conversion piece is connected to the filter element joint.

Further, a guide cylinder is provided inside the filter element joint, the upper end of the waterway conversion piece is sealed and sleeved inside the guide cylinder, and at least a part of the upper end periphery of the waterway conversion piece is in contact with the filter element joint. The inner top surfaces are spaced apart.

In some embodiments, the filter element assembly further includes: a switching valve, the switching valve is located inside the waterway switching piece, and the switching valve is respectively communicated with the pure water outlet and the pure water joint, so A waste water channel is defined between the switching valve and the waterway conversion piece, and the waste water channel is respectively communicated with the waste water outlet and the waste water joint.

Further, the upper end cover of the water-saving membrane includes: a cover body, the cover body covers the upper end of the water-saving membrane and covers the end surface and the peripheral surface of the upper end of the water-saving membrane, the waste water outlet and The pure water outlet is formed on the top wall of the cover plate main body; the pure water outlet pipe is connected to the cover plate main body and communicated with the pure water outlet, and the waste water outlet is located at the The outer side of the pure water outlet pipe, wherein the lower end of the switching valve is sleeved on the outer side of the pure water outlet pipe.

Further, the main body of the cover plate is provided with ribs, the ribs abut against the upper end surface of the water-saving membrane, and the top wall of the main body of the cover plate is spaced apart from the upper end surface of the water-saving membrane .

Optionally, the upper end of the conversion valve is provided with a flange, and the flange cooperates with the waterway adapter to define a pure water channel spaced apart from the waste water channel above the flange, and the The pure water channel communicates with the pure water connector.

In some embodiments, a pure water inlet communicating with the pure water channel is provided on the inner top surface of the filter element joint, and the pure water joint communicates with the pure water inlet.

In some embodiments, the upper end of the switching valve is provided with a pure water conduit, the pure water conduit communicates with the inner space of the switching valve, and the upper end of the pure water conduit communicates with the pure water channel.

In some embodiments, the upper end of the switching valve is provided with a waste water conduit, the waste water conduit communicates with the waste water channel, and the upper end of the waste water conduit communicates with the waste water joint.

In some embodiments, the center of the filter element joint is provided with a waste water inlet connected to the waste water joint, and the upper end of the waste water conduit is sleeved in the waste water inlet.

In some embodiments, the raw water connector, the pure water connector and the waste water connector are arranged on the same side of the filter element connector and arranged side by side.

In some embodiments, the filter element cylinder is connected to the filter element joint by screw welding.

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

Description of drawings

1 is a schematic diagram of a filter element assembly according to an embodiment of the present invention;

Fig. 2 is a partially enlarged view of the filter element assembly shown in Fig. 1;

Fig. 3 is a schematic diagram of the filter element joint shown in Fig. 1;

FIG. 4 is a schematic diagram of another angle of the filter element joint shown in FIG. 3 .

Reference signs:

filter element assembly 100,

Raw water channel 101, pure water channel 102, waste water channel 103,

Filter connector 1,

Raw water connector 111, pure water connector 112, waste water connector 113,

Raw water inlet, pure water inlet 122, waste water inlet 123,

guide cylinder 13,

Filter cartridge body 2, water-saving membrane 3, water-saving membrane lower end cover 4,

The upper end cover 5 of the water-saving membrane, the main body of the cover plate 51, the ribs 511,

Pure water outlet pipe 52, second boss 521, second sealing ring 522,

Waterway conversion piece 6, first boss 61, first sealing ring 62,

Switching valve 7, flange 71, pure water conduit 72,

waste water conduit 73, the third boss 731, the third sealing ring 732,

Pure water central pipe 8, waste water central pipe 9.

detailed description

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

The following describes a filter element assembly 100 according to an embodiment of the present invention with reference to FIGS. 1-4 .

As shown in FIG. 1 and FIG. 2 , the filter element assembly 100 according to the embodiment of the present invention includes: a filter element joint 1 , a filter element cylinder 2 , a water-saving membrane 3 , a lower end cover 4 of the water-saving membrane and an upper end cover 5 of the water-saving membrane.

Specifically, the filter joint 1 has a raw water joint 111, a pure water joint 112 and a waste water joint 113; the raw water joint 111 can introduce an external water source (such as tap water) into the filter core assembly 100 for filtration, and the pure water joint 112 can filter the filter core assembly 100 to obtain The pure water is drawn out for drinking by the user, and the waste water filtered by the filter element assembly can be discharged from the waste water joint 113.

The upper end of the filter cylinder 2 is open and the lower end is closed, and the upper end of the filter cylinder 2 is closed by the filter joint 1; the water-saving membrane 3 is arranged in the filter cylinder 2; the lower end cover 4 of the water-saving membrane covers the lower end of the water-saving membrane 3; The upper end cover 5 of the water-saving membrane covers the upper end of the water-saving membrane 3 . The upper end cover 5 of the water-saving membrane has a waste water outlet and a pure water outlet. Thereby, the cross-flow of raw water, pure water and waste water can be prevented.

Raw water enters the filter element cylinder 2 of the filter element assembly 100 from the raw water connector 111, and is filtered by the water-saving membrane 3 located in the filter element cylinder 2, and the pure water obtained after filtration flows out from the pure water outlet on the end cover 5 of the water-saving membrane. Then the filter element assembly 100 is drawn from the pure water joint 112 for drinking by the user; meanwhile, the waste water generated by the filtration of the water-saving membrane 3 flows out from the waste water outlet on the end cover 5 of the water-saving membrane, and is discharged from the waste water joint 113 outside the filter assembly.

According to the filter element assembly 100 of the embodiment of the present invention, by applying the water-saving membrane 3, the waste water production rate can be reduced to realize the effect of water saving. At the same time, the installation space of the filter element assembly 100 can be reduced, the pipeline can be simplified, and the risk of water leakage can be reduced.

In one embodiment of the present utility model, as shown in Figure 1 and Figure 2, the filter element assembly 100 can also include: a waterway conversion piece 6, the waterway conversion piece 6 can be connected with the upper end of the water-saving membrane 3, the waterway conversion piece 6 The outer side and the inner wall of the filter element joint 1 and the inner wall of the filter element cylinder 2 jointly define a raw water channel 101, the raw water channel 101 communicates with the raw water joint 111, and the raw water channel 101 extends to the outer periphery of the water-saving membrane 3, and the upper end cover of the water-saving membrane The waste water outlet on the 5 and the pure water outlet are all positioned at the inboard of the waterway conversion part 6. Therefore, the pure water and waste water can be separated from the raw water through the waterway conversion part 6, effectively avoiding water crossing.

Further, as shown in Figure 2, the lower end of the waterway conversion piece 6 can be sleeved on the upper end of the water-saving membrane 3, thereby limiting the waste water outlet and the pure water outlet to the inner side of the waterway conversion piece 6, so as to avoid the pure water and waste water from interacting with the raw water. String water. And the upper end of the waterway conversion part 6 is connected with the filter element joint 1, so as to guide the pure water and waste water to the pure water joint 112 and the waste water joint 113 of the filter element joint 1 to lead out.

In conjunction with Fig. 2, the lower end of the waterway conversion part 6 is cylindrical, and the lower end of the waterway conversion part 6 is sleeved on the outer wall surface of the water-saving membrane upper end cover 5, and the lower end of the waterway conversion part 6 is in contact with the water-saving membrane upper end cover 5 For example, the waterway conversion piece 6 can be fixed with the upper end cover of the water-saving membrane 3 by ultrasonic welding, thereby effectively preventing the pure water and waste water from crossing with the raw water.

In some embodiments of the present utility model, as shown in FIG. 2 , a guide cylinder 13 may be provided in the filter joint 1 , and the upper end of the waterway conversion member 6 is sealed and sleeved on the inner side of the guide cylinder 13 to prevent the inside of the filter joint 1 . Raw water strings into the inside of the water flow conversion piece. In addition, at least a part of the periphery of the upper end of the waterway conversion member 6 is spaced apart from the inner top surface of the filter element joint 1 . Therefore, it is convenient to socket the upper end of the waterway conversion member 6 with the guide cylinder 13 .

Referring to FIG. 2 , a guide cylinder 13 extending vertically downward is provided inside the filter element joint 1 , and a first boss 61 protruding outward and surrounding the waterway conversion piece 6 is formed on the outer peripheral wall of the upper end of the waterway conversion piece 6 . The first bosses 61 may include multiple ones arranged at intervals along the axial direction of the waterway conversion member 6 (the up-and-down direction shown in FIG. 2 ), and the radial dimension of the first bosses 61 is smaller than the inner diameter of the guide cylinder 13 . A first groove is defined between adjacent first bosses 61, and a first sealing ring 62 may be provided in the first groove, and the outer side of the first sealing ring 62 is against the inner peripheral wall of the guide cylinder 13, thereby , not only can facilitate the socketing of the guide cylinder 13 and the waterway conversion part 6, but also can ensure the sealing performance between the guide cylinder 13 and the waterway conversion part 6, thereby effectively preventing the water crossing between the raw water and the pure water.

In some embodiments, as shown in Fig. 1 and Fig. 2, the filter element assembly 100 may further include: a switching valve 7, which may be located inside the waterway switching member 6, and the switching valve 7 is connected to the upper end cover 5 of the water-saving membrane respectively. The pure water outlet on the top is in communication with the pure water joint 112 on the filter element joint 1, so that the pure water filtered by the water-saving membrane 3 can be diverted to the pure water joint 112 to flow out. A waste water channel 103 may be defined between the conversion valve 7 and the waterway conversion member 6 , and the waste water channel 103 communicates with the waste water outlet and the waste water joint 113 respectively. Therefore, the waste water generated by the water-saving membrane 3 is drained to the waste water joint 113 for discharge. Thereby, the pure water and the waste water can be further separated, effectively preventing water crossing between the pure water and the waste water, and improving the sealing performance.

In some embodiments of the present utility model, as shown in FIG. 2 , the upper end cover 5 of the water-saving membrane may include: a cover body 51 and a pure water outlet pipe 52, wherein the cover body 51 may cover the water-saving membrane 3 The upper end, and the cover plate main body 51 can cover the end surface and the peripheral surface of the upper end of the water-saving membrane 3 to avoid water leakage from the end surface of the water-saving membrane 3 and ensure the normal filtration of the filter element assembly 100 . Waste water outlet and pure water outlet are formed on the top wall of cover plate main body 51; On the outside, thus, the pure water filtered by the water-saving membrane 3 can be separated from the waste water, so as to avoid the cross-flow of pure water and waste water.

Wherein, the lower end of the switching valve 7 is sleeved on the outside of the pure water outlet pipe 52 . Further, the conversion valve 7 is tightly socketed with the pure water outlet pipe 52 . Specifically, as shown in FIG. 2 , the radial dimension of the upper end of the pure water outlet pipe 52 is smaller than the inner diameter of the lower end of the switching valve 7 , so that the switching valve 7 is sleeved on the outside of the pure water outlet pipe 52 . And the outer peripheral surface of the upper end of the pure water outlet pipe 52 is formed with a second boss 521 that protrudes outward and surrounds the pure water outlet pipe 52 for a week. The second boss 521 may include a plurality of A second groove is defined between adjacent second bosses 521, and a second sealing ring 522 may be provided in the second groove, and the outer end of the second sealing ring 522 is against the inner peripheral surface of the lower end of the switching valve 7 Above, to realize the sealing connection between the inner wall surface of the switching valve 7 and the outer peripheral surface of the pure water outlet pipe 52, thereby effectively separating the pure water channel 102 and the waste water channel 103, and preventing the pure water and waste water from crossing over.

Preferably, the peripheral surface of the cover body 51 and the water-saving membrane 3 can be sealed and connected by glue, thus, the reliability and sealing performance of the connection between the cover body 51 and the water-saving membrane 3 can be further improved, and the raw water and pure water can be avoided. Water strings water.

Further, as shown in FIG. 2 , the cover main body 51 may be provided with ribs 511 , the ribs 511 are against the upper surface of the water-saving membrane 3 , and the top wall of the cover main body 51 is in contact with the upper surface of the water-saving membrane 3 . The end faces are spaced apart. Thus, it is beneficial for the waste water to flow from the gap between the end faces to the waste water outlet for discharge.

In some embodiments of the present utility model, as shown in FIG. 2 , a flange 71 may be provided on the upper end of the switching valve 7, and the flange 71 extends radially outward along the switching valve 7, and the flange 71 may be connected to the waterway adapter Matching, for example, the outer end surface of the flange 71 can abut against the inner wall surface of the waterway adapter to define a pure water channel 102 spaced apart from the waste water channel 103 above the flange 71, and the pure water channel 102 communicates with pure water Connector 112. Thereby effectively avoiding pure water and waste water crossing water.

Preferably, as shown in FIG. 3 , a pure water inlet 122 communicating with the pure water channel 102 may be provided on the inner top surface of the filter element connector 1 , and the pure water connector 112 may communicate with the pure water inlet 122 . Thus, the pure water in the pure water channel 102 can flow into the pure water connector 112 through the pure water inlet 122 and be drawn out for drinking by users.

In some embodiments of the present invention, as shown in Figure 1 and Figure 2, the upper end of the switching valve 7 can be provided with a pure water conduit 72, the pure water conduit 72 communicates with the inner space of the switching valve 7, and the pure water conduit 72 The upper end communicates with the pure water channel 102. Thus, the pure water inside the switching valve 7 can be introduced into the pure water channel 102 through the pure water conduit 72 , and finally flows from the pure water inlet 122 to the pure water joint 112 .

Optionally, as shown in FIG. 2 , a waste water conduit 73 may be provided at the upper end of the switching valve 7 , and the waste water conduit 73 may communicate with the waste water channel 103 , and the upper end of the waste water conduit 73 may communicate with the waste water joint 113 . Therefore, the waste water in the waste water channel 103 can be introduced into the waste water joint 113 through the waste water conduit 73 to be discharged.

Preferably, as shown in FIG. 2 and FIG. 3 , a waste water inlet 123 connected to the waste water joint 113 may be provided at the center of the filter element connector 1 , and the upper end of the waste water conduit 73 is sleeved in the waste water inlet 123 . In order to facilitate the waste water in the waste water conduit 73 to be led to the waste water joint 113 to be discharged through the waste water inlet 123 .

Further, as shown in FIG. 2 , the waste water conduit 73 can be tightly socketed with the waste water inlet 123 . Specifically, the outer wall surface of the upper end of the waste water conduit 73 is formed with a third boss 731 that protrudes outward and surrounds the waste water pipe 73 for a week. A third groove is defined between the third bosses 731, the radial dimension of the third boss 731 is smaller than the radial dimension of the waste water inlet 123, a third sealing ring 732 is arranged in the third groove, and the third sealing ring The outer side of 732 abuts against the inner peripheral wall of the waste water inlet 123 , so that the waste water conduit 73 is tightly socketed with the waste water inlet 123 .

In some embodiments of the present invention, as shown in FIG. 3 , the raw water connector 111 , the pure water connector 112 and the waste water connector 113 can be arranged on the same side of the filter element connector 1 and arranged side by side. In this way, it is convenient to connect external pipelines, facilitate the installation of the filter element assembly 100, save installation space, and make the structure of the inner filter element assembly 100 more compact.

In some embodiments of the present utility model, the filter cartridge body 2 is connected to the filter cartridge joint 1 by screw welding. Thus, the reliability and sealing performance of the connection between the filter element joint 1 and the filter element cylinder 2 can be improved.

A filter element assembly 100 according to a specific embodiment of the present invention will be described below with reference to FIGS. 1-4 .

Referring to Fig. 1, the filter element assembly 100 includes: filter element joint 1, filter element cylinder 2, water-saving membrane 3, water-saving membrane lower end cap 4, water-saving membrane upper end cap 5, waterway conversion piece 6, conversion valve 7, pure water center pipe 8 and waste water central pipe 9, wherein, water-saving film 3, water-saving film lower end cover 4, water-saving film upper end cover 5, waterway conversion piece 6, conversion valve 7, pure water central pipe 8 and waste water central pipe 9, all set In the filtering space jointly defined by the filter element joint 1 and the filter element cylinder 2 .

Specifically, as shown in Figure 1, the filter element joint 1 has a raw water joint 111, a pure water joint 112 and a waste water joint 113; The outer peripheral surfaces of the raw water joint 111, the pure water joint 112 and the waste water joint 113 are provided with embedded grooves. When the raw water joint 111, the pure water joint 112 and the waste water joint 113 are connected to external water pipes, seals can be provided in the embedded grooves. Realize the sealing socket connection between the raw water connector 111, the pure water connector 112 and the waste water connector 113 and the external water pipe to prevent water leakage.

The filter element connector 1 is provided with a raw water inlet 121 , a pure water inlet 122 and a wastewater inlet 123 respectively connected to the raw water connector 111 , the pure water connector 112 and the wastewater connector 113 . The wastewater inlet 123 is located at the center of the filter connector 1 . A guide cylinder 13 extending downward is formed in the filter element joint 1

The upper end of the filter element cylinder 2 is open and the lower end is closed, and the upper end of the filter element cylinder 2 is connected with the filter element joint 1 by rotary welding.

The water-saving film 3 is rolled on the outside of the pure water central pipe 8 and the waste water central pipe 9, and the upper end and the lower end of the water-saving film 3 are respectively glued to the upper end cover 5 of the water-saving film and the lower end cover 4 of the water-saving film to prevent water from passing through. , to ensure normal filtering.

The upper end cover 5 of the water-saving membrane includes a cover body 51 and a pure water outlet pipe 52. The cover body 51 covers the end surface and the peripheral surface of the upper end of the water-saving membrane 3. The top wall of the cover body 51 is formed with a waste water outlet and a pure water outlet. The outlet, the pure water outlet and the waste water outlet are connected with the pure water central pipe 8 and the waste water central pipe 9 respectively, the pure water outlet pipe 52 is connected with the cover plate main body 51 and runs through the cover plate main body 51 in the up and down direction, the pure water outlet pipe 52 is connected with the pure water The water outlet is connected, and the waste water outlet is located outside the pure water outlet pipe 52 .

The cover main body 51 is provided with ribs 511 , the ribs 511 abut against the upper end surface of the water-saving membrane 3 , and the top wall of the cover main body 51 is spaced apart from the upper end surface of the water-saving membrane 3 .

The lower end of the waterway conversion piece 6 is sleeved on the outside of the cover plate main body 51 and is attached to the cover plate main body 51. The upper end of the waterway conversion piece 6 is tightly socketed with the guide cylinder 13 in the filter element joint 1, and the upper end of the waterway conversion piece 6 is surrounded by At least a part of the edge is spaced from the inner top surface of the filter element joint 1 . A raw water channel 101 is defined between the outer side of the waterway conversion piece 6 and the filter element joint 1 and the filter element cylinder 2. The raw water channel 101 communicates with the raw water joint 111 and extends to the outer periphery of the water-saving membrane 3. The waste water outlet is located on the inner side of the waterway conversion piece 6. .

The switching valve 7 is located inside the waterway conversion piece 6, and the lower end of the switching valve 7 is sealed and sleeved on the outside of the upper end of the pure water outlet pipe 52. A waste water channel 103 communicating with the waste water outlet is defined between the switching valve 7 and the waterway conversion piece 6. The upper end of the conversion valve 7 is provided with a flange 71, and the flange 71 cooperates with the waterway adapter to define a pure water channel 102 spaced apart from the waste water channel 103 above the flange 71, and the upper end of the conversion valve 7 is provided with a spaced water channel 102. The pure water conduit 72 and the waste water conduit 73, the pure water conduit 72 communicates with the inner space of the switching valve 7, and the upper end of the pure water conduit 72 communicates with the pure water channel 102. The waste water conduit 73 communicates with the waste water channel 103 , and the upper end of the waste water pipe 73 is sealed and sleeved in the waste water inlet 123 .

The raw water entering from the raw water connector 111 can enter the raw water channel 101 through the raw water inlet 121, the water in the raw water channel 101 passes through the water-saving membrane 3, and after being filtered by the water-saving membrane 3, the obtained pure water enters the pure water central pipe 8 , the pure water in the pure water central pipe 8 can enter the pure water outlet pipe 52 from the pure water outlet, enter the pure water conduit 72 through the inner space of the switching valve 7 at the upper end of the pure water outlet pipe 52, and then enter the pure water outlet pipe 72, and then enter the The pure water channel 102 connected by the conduit 72 finally enters the pure water joint 112 from the pure water inlet 122 and flows out. The waste water produced by the filtration of the water-saving membrane 3 enters the waste water central pipe 9, and the waste water in the waste water central pipe 9 enters the waste water channel 103 from the waste water outlet, then flows into the waste water conduit 73 on the switching valve 7, and finally enters the waste water joint from the waste water inlet 123 113 discharge.

According to the filter element assembly 100 of the embodiment of the present invention, the water-saving membrane 3 elements are used to simplify the pipeline and save water, which greatly reduces the risk of water leakage, and the filter element assembly 100 can be used in conjunction with the waterway plate, and the filter element assembly 100 can be integrated replace.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial ", "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying No device or element must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present utility model, "plurality" means two or more, unless otherwise specifically defined.

In this utility model, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, unless otherwise clearly specified and limited. Connection, or integration; it can be mechanical connection, electrical connection, or communication; it can be direct connection or indirect connection through an intermediary, it can be the internal communication of two components or the interaction of two components relation. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and modifications, the scope of the present invention is defined by the claims and their equivalents.

Claims (14)

1. A filter element assembly, characterized in that, comprising: A filter element joint, the filter element joint has a raw water joint, a pure water joint and a waste water joint; A filter cylinder, the upper end of the filter cylinder is open and the lower end is closed, and the upper end of the filter cylinder is closed by the filter joint; A water-saving membrane, the water-saving membrane is arranged in the filter cartridge body; The lower end cover of the water-saving film, the lower end cover of the water-saving film covers the lower end of the water-saving film; The upper end cover of the water-saving film, the upper end cover of the water-saving film covers the upper end of the water-saving film, the upper end cover of the water-saving film has a waste water outlet and a pure water outlet, the waste water outlet is connected to the waste water joint, the The pure water outlet is connected to the pure water connector. 2. The filter element assembly according to claim 1, characterized in that, the filter element assembly further comprises: a waterway conversion piece, the waterway conversion piece is connected to the upper end of the water-saving membrane, and the outer side of the waterway conversion piece defines Out of the raw water channel, the raw water channel communicates with the raw water joint and extends to the outer periphery of the water-saving membrane, the waste water outlet and the pure water outlet on the upper end cover of the water-saving membrane are located inside the waterway conversion piece. 3 . The filter element assembly according to claim 2 , wherein the lower end of the water channel conversion member is sleeved on the upper end of the water-saving membrane, and the upper end of the water channel conversion member is connected to the filter element connector. 4 . 4. The filter element assembly according to claim 3, wherein a guide cylinder is provided inside the filter element joint, the upper end of the waterway conversion piece is sealed and sleeved on the inside of the guide cylinder, and the waterway conversion piece At least a portion of the periphery of the upper end is spaced apart from the inner top surface of the filter joint. 5. The filter element assembly according to any one of claims 2-4, wherein the filter element assembly further comprises: A switching valve, the switching valve is located inside the waterway switching piece, and the switching valve is respectively communicated with the pure water outlet and the pure water joint, and the waterway switching piece is defined between the switching valve and the waterway switching piece A waste water channel, the waste water channel communicates with the waste water outlet and the waste water joint respectively. 6. The filter element assembly according to claim 5, wherein the upper end cover of the water-saving membrane comprises: A cover body, the cover body covers the upper end of the water-saving membrane and covers the end surface and the peripheral surface of the upper end of the water-saving membrane, the waste water outlet and the pure water outlet are formed on the cover body on the top wall of A pure water outlet pipe, the pure water outlet pipe is connected to the cover plate main body and communicated with the pure water outlet, the waste water outlet is located outside the pure water outlet pipe, Wherein, the lower end of the switching valve is sleeved on the outside of the pure water outlet pipe. 7. The filter element assembly according to claim 6, wherein the main body of the cover plate is provided with ribs, and the ribs abut against the upper end surface of the water-saving membrane, and the main body of the cover plate The top wall is spaced apart from the upper end surface of the water-saving membrane. 8. The filter element assembly according to claim 5, wherein a flange is provided on the upper end of the switching valve, and the flange cooperates with the waterway adapter so as to define a space above the flange and the The pure water channel is separated from the waste water channel, and the pure water channel communicates with the pure water joint. 9. The filter element assembly according to claim 8, characterized in that, the inner top surface of the filter element joint is provided with a pure water inlet communicating with the pure water channel, and the pure water joint is connected to the pure water inlet connected. 10. The filter element assembly according to claim 8, characterized in that, the upper end of the switching valve is provided with a pure water conduit, the pure water conduit communicates with the inner space of the switching valve, and the pure water conduit The upper end communicates with the pure water channel. 11. The filter element assembly according to claim 8, wherein the upper end of the switching valve is provided with a waste water conduit, the waste water conduit communicates with the waste water channel, and the upper end of the waste water conduit communicates with the waste water joint . 12 . The filter element assembly according to claim 11 , wherein a waste water inlet connected to the waste water joint is provided at the center of the filter element joint, and the upper end of the waste water conduit is sleeved in the waste water inlet. 13 . 13. The filter element assembly according to claim 1, wherein the raw water connector, the pure water connector and the waste water connector are arranged on the same side of the filter element connector and arranged side by side. 14. The filter element assembly according to claim 1, characterized in that, the filter element cylinder is connected to the filter element joint by screw welding.