CN213171591U - Reverse osmosis filter element group spare and purifier - Google Patents

Abstract

The utility model provides a reverse osmosis filter element group spare and purifier. The reverse osmosis filter element group spare includes the reverse osmosis filter core, and the axial direction's of reverse osmosis filter core terminal surface is dense water outlet end, and reverse osmosis filter element group spare still includes end cap and elastic sheet, and the end cap cover is on dense water outlet end, and the elastic sheet is connected to the end cap in the outside of end cap, still is provided with the through-hole on the end cap, and the elastic sheet covers the through-hole, and at least part of elastic sheet outwards perks under water pressure to expose the through-hole. Set up the flexure strip on the end cap and can separate most dense water in the reverse osmosis filter element subassembly with the pure water, effectively reduce the ion total amount that can disperse in the reverse osmosis filter element subassembly in to the pure water, effectively reduce the ion concentration of the first cup of water that the user accepted. Further, when adopting pure water bubble membrane technique, can also reduce the quantity of the water of the low TDS of replacement raw water and dense water, the water economy resource, the water of required low TDS still less when again because of pure water bubble membrane can reduce the volume of adopting the purifier of this reverse osmosis filter core subassembly.

Description

Reverse osmosis filter element group spare and purifier

Technical Field

The utility model relates to a technical field of aqueous cleaning specifically, relates to reverse osmosis filter element group spare and purifier that has it.

Background

With the pursuit of quality of life by the public, the quality of drinking water is beginning to attract much attention. Reverse osmosis water purifiers are becoming more popular because the purified water produced by them is fresher, more sanitary and safer.

The raw water has higher TDS (soluble solid total amount) more, and reverse osmosis filter element group spare can be under the effect of booster pump, and block a large amount of ions in the raw water before reverse osmosis membrane, and make the TDS of the water through reverse osmosis membrane accord with the standard of straight drinking water. Meanwhile, the reverse osmosis filter element component can also discharge high-TDS concentrated water according to a certain proportion when preparing direct drinking water. In a shutdown state, a small amount of concentrated water and raw water still exist in the reverse osmosis filter element assembly in front of the reverse osmosis membrane. The TDS of concentrated water and raw water is higher than the pure water in the reverse osmosis filter element group spare far away, and the back of shutting down for a long time, the ion in raw water and the concentrated water can be to the pure water diffusion that purifies behind the membrane, leads to the user when next water intaking, and the water that connects to get will have higher TDS.

In order to reduce the ion concentration of the first cup of water after a long-time standby, some existing water purifiers use the technology of pure water bubble membranes, namely, the concentrated water and the raw water in the reverse osmosis filter core assembly are replaced by the water with low TDS after the water purifier is shut down, so that the reverse osmosis filter core assembly is completely filled with the water with low TDS during standby. Like this, just need all utilize the water of low TDS of preparing in advance to replace the thick water and the raw water in the intermediate layer of between filter core and the filter flask and reverse osmosis membrane bag all after shutting down at every turn, consequently need use the water of a large amount of low TDS to wash reverse osmosis filter core subassembly, cause the waste of water resource, also improved the produced energy consumption of the water of the low TDS who prepares the pure water bubble membrane and used. Moreover, since the amount of water required for flushing with low TDS is large, a water storage container (e.g., a pressure tank) having a large volume has to be provided in the water purifier, resulting in an increase in the volume of the water purifier.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that exists among the prior art at least partially, according to the utility model discloses an aspect provides a reverse osmosis filter element group spare, including the reverse osmosis filter core, the axial direction's of reverse osmosis filter core terminal surface is dense water outlet end, and reverse osmosis filter element group spare still includes end cap and flexure strip, and the end cap cover is on dense water outlet end, and the flexure strip is connected to the end cap in the outside of end cap, still is provided with the through-hole on the end cap, and the flexure strip covers the through-hole, and at least a part of flexure strip outwards perks under water pressure to expose the through-hole.

Set up the elastic sheet on the end cap that the cover was established on dense water goes out water end and can separate most dense water and pure water in the reverse osmosis filter element group spare, promptly, only in the space between end cap and the dense water play water end and a small amount of dense water that exists in the intermediate layer of membrane bag still can contact with the pure water, and the dense water of the interior dense water passageway storage of the lateral wall of reverse osmosis filter element and the inside wall of casing then can't contact with the pure water because the isolation of elastic sheet. The quantity of concentrated water stored in the space and the interlayer is much less than that of the concentrated water stored in the concentrated water channel, so that the total quantity of ions which can be diffused into pure water in the reverse osmosis filter core component is effectively reduced. Therefore, even under the condition that the reverse osmosis filter element assembly is in standby for a long time, compared with the prior art, the ion concentration of the first cup of water taken by a user can be effectively reduced.

In order to realize the pure water bubble membrane process, the prior art needs to replace all the raw water and the concentrated water in the reverse osmosis filter element assembly by the water with low TDS in the storage device, namely, the water with low TDS is replaced in the shell. The scheme only needs to replace the concentrated water before the raw water and the elastic sheet, and the raw water and the concentrated water existing between the elastic sheet and the concentrated water port can not enter the reverse percolation core after the elastic sheet is sealed.

Therefore, the water consumption of the low-TDS water for replacing the raw water and the concentrated water can be greatly reduced, the water resource is saved, and the energy consumption for preparing the low-TDS water for preparing the pure water bubble film is reduced. And because the water of required low TDS is still less during pure water bubble membrane, so adopt this reverse osmosis filter core subassembly's purifier can adopt the water storage device that the volume is littleer, and then can reduce the volume of adopting this reverse osmosis filter core subassembly's purifier.

Illustratively, the area of the outer surface of the end cap covered by the resilient sheet is bowl-shaped, wherein the bowl mouth of the area faces the outside of the end cap; and/or the surface of the elastic sheet covering the end cap is bowl-shaped, wherein the bowl opening of the surface faces the inner side of the end cap.

In the absence of water flow, the elastic sheet covers the area of the end cap, and in one form, the area is recessed inwardly of the end cap, so that the elastic sheet and end cap only abut at the edges of the area, the abutting area being linear, i.e. forming a line seal. In another embodiment, the area covered by the elastic sheet on the end cap is a plane, but the elastic sheet is bowl-shaped, and the joint area of the elastic sheet and the end cap is also linear, i.e. a linear seal is formed. Of course, the two structures can be combined, namely the surface of the elastic sheet and the area of the end cap are bowl-shaped, and compared with the surface sealing that the elastic sheet is completely attached to the outer surface of the end cap, the sealing effect of the linear sealing is better, and in the aspect of processing and manufacturing, the precision requirement is lower, and the cost is lower.

Illustratively, the center of the elastic sheet is connected to the end cap.

It will be appreciated that the elastomeric sheet of this construction has a better integrity than if the elastomeric sheet were attached to the end cap by a peripheral edge. The structural strength of the elastic sheet is also better because there are no openings in the elastic sheet. Therefore, after long-time use, the novel electric heating wire is not damaged and has long service life. And the elastic sheet with the structure has fewer connection points with the end cap, so that the connection form is more convenient, and the elastic sheet can be easily connected with the end cap.

Illustratively, the number of the through holes is a plurality, and the through holes are evenly distributed around the center of the elastic sheet.

On the one hand, the water quantity flowing through the through holes is more uniform when the water flows through the through holes. On the other hand, compare and set up the great through-hole of an area on the end cap, the flexure strip can be connected with the end cap more conveniently, can not reduce the structural strength that the end cap lies in the flexure strip junction moreover.

Illustratively, the end cap is provided with a mounting hole, and the elastic piece has a connecting rod inserted into the mounting hole.

Adopt the end cap and the flexure strip of this structure, it has the convenient advantage of connection to, when being connected the flexure strip with the end cap, this structure still has the guidance quality, can install the accurate position with the flexure strip better, thereby guarantees when not having water pressure, and the flexure strip can be with the fine shutoff of through-hole, avoids appearing the phenomenon of leaking.

Illustratively, the connecting rod includes a head portion and a neck portion connected to each other, the neck portion being received in the mounting hole, the head portion being located outside the mounting hole, and an outer diameter of the head portion being greater than an inner diameter of the mounting hole.

After the connecting rod of the elastic sheet is inserted into the mounting hole, the elastic sheet can be clamped on the end cap through the head. In the design, the head part can also be made of elastic materials, so that when the elastic sheet is installed, the head part is only required to be extruded into the installation hole with force, and the installation process of the elastic sheet is further simplified.

Illustratively, the reverse osmosis filter element is plugged into the end cap, and the outer peripheral surface of the reverse osmosis filter element is connected with the inner peripheral surface of the end cap in a sealing manner.

The end cap is sleeved on the end part of the concentrated water outlet end of the reverse osmosis filter element, and the end cap and the end part can be connected together in a sealing manner by using an adhesive or an adhesive tape, so that the outer peripheral surface of the reverse osmosis filter element can be connected with the inner peripheral surface of the end cap in a sealing manner. Like this, can firmly be connected end cap and reverse osmosis filter core, simultaneously, the end cap can also tighten the reverse osmosis filter core, prevents that the reverse osmosis filter core is in the use, owing to receive the effect of pressure, and loose. In addition, the connection mode has a simple structure and is convenient to process and manufacture.

Illustratively, the reverse osmosis cartridge assembly further comprises a center tube around which the reverse osmosis cartridge is wrapped, the ends of the center tube being secured to the end caps.

Reverse osmosis filter element group spare is further fixed through center tube and end cap, and on the one hand, the center tube can play the guide effect to the installation of end cap, and on the other hand, the end cap can also play limiting displacement to the center tube, consequently makes this reverse osmosis filter element group spare's structure more stable.

According to another aspect of the present invention, there is provided a water purifier, comprising any one of the above reverse osmosis filter element assemblies.

Exemplarily, the water purifier still includes the solenoid valve of intaking, booster pump and water storage equipment, the delivery port intercommunication of the solenoid valve of intaking to the water inlet of booster pump, the delivery port intercommunication of booster pump to the former mouth of a river of reverse osmosis filter core subassembly, water storage equipment includes the pressure bucket, the pure water side of this pressure bucket communicates to the former mouth of a river of reverse osmosis filter core subassembly through first pipeline, the pure water side of pressure bucket still communicates to the pure mouth of a river of reverse osmosis filter core subassembly through the second pipeline, wherein be provided with first check valve on the first pipeline, the switching-on direction of first check valve is from the pressure bucket to former mouth of a river, be provided with the second check valve on the second pipeline, the switching-on direction of second check valve is from the pure mouth of a.

Utilize the pressure bucket to store the water of low TDS as water storage equipment to have the higher former water of ion concentration and dense water replacement in the reverse osmosis filter element subassembly, can realize the pure water bubble membrane. With the reverse osmosis filter element assembly having the end cap described above, the low TDS water can be utilized to drain only the concentrate in the reverse osmosis filter element that is in front of the flexible sheet, without having to drain all of the concentrate in the reverse osmosis filter element assembly. From this, can realize utilizing the water of less low TDS to accomplish the pure water bubble membrane, reduce the waste of water resource, reduce the use cost of product. In addition, the water storage quantity of the water storage device can be reduced, the size of the water storage device is reduced, and the size of the water purifier is reduced.

A series of concepts in a simplified form are introduced in the disclosure, which will be described in further detail in the detailed description section. The summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

The advantages and features of the present invention are described in detail below with reference to the accompanying drawings.

Drawings

The following drawings of the present invention are used herein as part of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions thereof, which are used to explain the principles of the invention. In the drawings, there is shown in the drawings,

fig. 1 is an exploded view of a reverse osmosis cartridge assembly according to an exemplary embodiment of the present invention;

FIG. 2 is a cross-sectional view of the reverse osmosis cartridge assembly of FIG. 1 with arrows showing the direction of water flow;

FIG. 3 is an enlarged view of a portion of the reverse osmosis cartridge assembly of FIG. 2;

FIG. 4 is a perspective view of the reverse osmosis cartridge assembly of FIG. 1;

fig. 5 is a perspective view of an elastic sheet according to an exemplary embodiment of the present invention;

fig. 6 is a perspective view of an elastic sheet according to another exemplary embodiment of the present invention;

fig. 7 is an exploded view of a reverse osmosis filter element and end cap according to an exemplary embodiment of the present invention;

fig. 8 is an exploded view of a reverse osmosis filter element and end cap according to another exemplary embodiment of the present invention;

fig. 9 is a schematic water path diagram of a water purifier according to an exemplary embodiment of the present invention; and

fig. 10 is a schematic water path diagram of a water purifier according to another exemplary embodiment of the present invention.

Wherein the figures include the following reference numerals:

100. a reverse osmosis filter element assembly; 110. a housing; 101. a raw water port; 102. a pure water port; 103. a dense water port; 104. a concentrated water channel; 105. a space; 200. a reverse osmosis filter element; 201. a concentrated water outlet end; 300. an end cap; 301. a through hole; 302. mounting holes; 303. a central tube mounting hole; 304. an area; 400. 400', an elastic sheet; 401. a surface; 410. a connecting rod; 411. a head portion; 412. a neck portion; 500. a central tube; 610. a water inlet electromagnetic valve; 620. a booster pump; 630. a water storage device; 631. a first pipeline; 632. a second pipeline; 633. pure water side; 634. raw water side; 640. a first check valve; 650. a second check valve.

Detailed Description

In the following description, numerous details are provided to provide a thorough understanding of the present invention. One skilled in the art, however, will understand that the following description illustrates only a preferred embodiment of the invention and that the invention may be practiced without one or more of these details. In addition, some technical features that are well known in the art are not described in detail in order to avoid obscuring the present invention.

As shown in fig. 1-4, the present invention provides a reverse osmosis cartridge assembly 100 comprising a reverse osmosis cartridge 200. The reverse osmosis cartridge 200 is wound around the center tube 500 and is received in the housing 110. The reverse osmosis cartridge 200 is a component of the reverse osmosis cartridge assembly 100 that performs a filtration function. The housing 110 is provided with a raw water port 101, a pure water port 102 and a concentrate water port 103, as shown in fig. 2. Raw water enters the reverse osmosis filter element 200 from the raw water port 101, and a part of the raw water is filtered to generate pure water which is collected in the central tube 500 and is provided to a user through the pure water port 102; the other part of the unfiltered water becomes concentrated water and is discharged through the concentrated water port 103. On the axial end face of the reverse osmosis filter element 200, a concentrate outlet end 201 is provided, the concentrate outlet end 201 being generally disposed on the end face away from the raw water port 101, the pure water port 102 and the concentrate outlet port 103, and the raw water inlet end 202 being disposed on the end face close to these three ports. The raw water inlet end 202 is communicated with the raw water port 101, and the concentrated water outlet end 201 is communicated with the concentrated water port 103.

The reverse osmosis cartridge assembly 100 also includes an end cap 300 and a resilient sheet 400. The end cap 300 can cover the concentrate outlet end 201, and the space 105 between the end cap 300 and the concentrate outlet end 201 can collect the concentrate discharged from the concentrate outlet end 201. The end cap 300 may be provided with a through hole 301, and the through hole 301 is used to discharge the concentrated water. That is, the concentrated water generated from the reverse osmosis cartridge 200 can be discharged only through the through-hole 301. The discharged concentrated water is conveyed to the concentrated water port 103 to be discharged through an annular concentrated water passage 104 between the outer side wall of the reverse osmosis filter element 200 and the inner side wall of the housing 110. The elastic sheet 400 is disposed outside the end cap 300 and coupled to the end cap 300. When no concentrated water is discharged from the reverse osmosis filter element 200, the elastic sheet 400 can cover the through hole 301, and the through hole 301 is blocked, at this time, the elastic sheet 400 can prevent the water flow outside the reverse osmosis filter element 200 from entering the reverse osmosis filter element 200 from the through hole 301. When the concentrated water is discharged from the reverse osmosis filter element 200, at least a portion of the elastic sheet 400 is tilted outward under the action of water pressure to expose the through hole 301, so that the concentrated water outlet end 201 of the reverse osmosis filter element 200 is communicated with the outside of the reverse osmosis filter element 200, and the concentrated water is discharged.

In one embodiment, as shown in fig. 6, the elastic sheet 400' may be a rubber sheet having an opening at the center. In the embodiment shown, the opening is cruciform, bisecting the elastic sheet 400'. The outer periphery of the elastic sheet 400' is connected to the end cap 300, for example, by bonding. The outer circumference is fixed, and the through hole is closed or opened by the edge of the opening abutting against the end cap 300 or tilting up with respect to the end cap 300. When no concentrate is discharged from the reverse osmosis cartridge 200, i.e., when there is no water pressure, the elastic sheet 400' assumes a closed state with the edge of the opening abutting against the end cap 300. The through hole 301 is blocked by the elastic piece 400'. When the concentrated water is discharged, that is, under the action of water pressure, the opening can be tilted towards the outer side of the reverse osmosis filter element 200, so that the concentrated water can be discharged from the through hole 301 and the tilted gap at the edge of the opening in sequence. In other embodiments, the elastic piece 400 ' may have various shapes, for example, the opening may be divided into two equal parts of the elastic piece 400 ' or three equal parts of the elastic piece 400 ', and the through hole 301 may be closed when no concentrated water is discharged and opened when concentrated water is discharged.

It is known that the ion concentration of the concentrated water generated during the water production process of the reverse osmosis filter element 200 is much higher than that of the raw water, and the ion concentration of the pure water collected in the central tube 500 after filtration is the lowest. Therefore, the elastic sheet 400 arranged on the end cap 300 sleeved on the concentrated water outlet end 201 can separate most of the concentrated water in the reverse osmosis filter element assembly 100 from the pure water, that is, only a small amount of concentrated water existing in the space 105 between the end cap 300 and the concentrated water outlet end 201 and the interlayer of the membrane bag still contacts with the pure water, and the concentrated water stored in the concentrated water channel 104 between the outer side wall of the reverse osmosis filter element 200 and the inner side wall of the housing 110 cannot contact with the pure water due to the isolation effect of the elastic sheet 400. The amount of concentrate stored in this space 105 and the interlayer is much smaller than the total amount of concentrate stored in the concentrate passage 104, thereby effectively reducing the total amount of ions that can diffuse into pure water in the reverse osmosis cartridge assembly 100. Therefore, even under the condition that the reverse osmosis filter element assembly 100 is standby for a long time, compared with the prior art, the ion concentration of the first cup of water received by the user can be effectively reduced.

Further, when the pure water bubble membrane technology is adopted, it is necessary to replace the raw water and the concentrated water in the reverse osmosis filter element 200 with the water having a low TDS. Under the action of external pressure, the water with low TDS can enter the reverse osmosis filter element 200 to replace the raw water in the reverse osmosis filter element 200 and the concentrated water in front of the elastic sheet 400, so that the raw water and the concentrated water are discharged. In the replacement process, under the action of water pressure, the through hole 301 is opened by the elastic sheet 400, and the replaced raw water and the concentrated water are discharged from the through hole 301 through the concentrated water outlet end 201. After the concentrate before the elastic sheet 400 is replaced, the input of the low TDS water into the reverse osmosis filter core assembly 100 can be stopped, so that the pressures before and after the elastic sheet 400 are basically the same, and the through hole is blocked by the elastic sheet 400. The resilient member 400 will prevent the concentrate behind the resilient member 400 from flowing back into the reverse osmosis cartridge 200, and therefore only low TDS water will be present in the reverse osmosis cartridge 200. Because there is not concentration difference in the reverse osmosis filter core 200, the diffusion phenomenon can not appear, consequently even stop the time for a long time and can not lead to the TDS of head cup water to rise.

In order to realize the pure water membrane soaking process, the raw water and the concentrated water in the reverse osmosis filter core assembly 100 are completely replaced by the water with low TDS in the water storage device in the prior art, that is, the water with low TDS is replaced in the shell 110. In the scheme, only the raw water and the concentrated water in front of the elastic sheet 400 need to be replaced, and the raw water and the concentrated water stored between the elastic sheet 400 and the concentrated water port can not enter the reverse osmosis filter element 220 after the elastic sheet 400 is sealed.

To sum up, this scheme can significantly reduce the quantity of the water of the low TDS of replacement raw water and dense water, has practiced thrift the water resource, has also reduced the produced energy consumption of the water of the low TDS who prepares the pure water bubble membrane and uses. And because the water of required low TDS is still less when pure water bubble membrane, so adopt this reverse osmosis filter core subassembly 100's purifier can adopt the water storage device that the volume is littleer, and then can reduce the volume of adopting this reverse osmosis filter core subassembly 100's purifier.

Illustratively, the region 304 of the outer surface of the end cap 300 covered by the elastomeric sheet 400 may be bowl-shaped. Wherein the bowl opening of the region 304 faces the outside of the end cap 300. That is, the center of the region 304 is recessed toward the inside of the end cap 300. In this embodiment, it is defined that the outer side of the end cap 300 is a side facing the elastic sheet 400, and the inner side of the end cap 300 is a side facing the reverse osmosis filter cartridge 200. As shown in fig. 3, when there is no water flow, the elastic sheet 400 covers the region 304 of the end cap 300, but since the region 304 is recessed toward the inside of the end cap 300, the elastic sheet 400 and the end cap 300 are attached only to the edge of the region 304, and the attached region is linear, i.e., a line seal is formed. Compared with the face sealing that the elastic sheet 400 is completely attached to the outer surface of the end cap 300, the sealing effect of the line sealing is better, and in the aspect of processing and manufacturing, the precision requirement is lower and the cost is lower.

Illustratively, the surface 401 of the elastomeric sheet 400 covering the endcap 300 may be bowl-shaped. Wherein the bowl of the surface 401 faces the inside of the end cap 300. That is, the center of the surface 401 is recessed toward the outside of the end cap 300. As shown in fig. 3, the elastic piece 400 is buckled to the end cap 300 when there is no water flow. Thus, even if the area 304 of the end cap 300 covered by the elastic sheet 400 is flat, the area where the elastic sheet 400 is attached to the end cap 300 is linear, i.e., a linear seal is formed. Compared with the surface sealing that the surface 401 of the elastic sheet 400 is planar and completely attached to the outer surface of the end cap 300, the sealing effect of the linear sealing is better, so that the precision requirement is lower and the cost is lower in processing and manufacturing.

Of course, it is also possible to combine the two structures, i.e. the surface 401 of the resilient sheet 400 and the area 304 of the end cap 300 are both bowl-shaped.

Illustratively, the center of the elastic sheet 400 is connected to the end cap 300. The elastic sheet 400 may have a shape as shown in fig. 5. The center of the elastic piece 400 is fixed to the end cap 300, and the elastic piece 400 is tilted by its own deformation under the action of water pressure, and a gap is generated between the edge of the elastic piece 400 and the end cap 300, and the through hole 301 can be opened and closed by the gap. The arrows in fig. 2 show the direction of flow of the water flow within the reverse osmosis cartridge assembly 100.

It can be seen that resilient plate 400 of this construction has greater integrity than resilient plate 400 connected to end cap 300 by a peripheral edge. The structural strength of the elastic sheet 400 is also better since there is no opening in the elastic sheet 400. Therefore, after long-time use, the novel electric heating wire is not damaged and has long service life. In addition, since the elastic sheet 400 having such a structure has a small number of connection points with the end cap 300, the connection form is more convenient, and the elastic sheet 400 can be easily connected with the end cap 300.

Illustratively, the number of the through holes 301 is plural, and is uniformly distributed around the center of the elastic sheet 400. That is, as shown in fig. 4, the plurality of through holes 301 are equidistant from the center of the elastic sheet 400, and the distances between two adjacent through holes 301 are equal. Thus, on the one hand, when the water flows through the through holes 301, the water amount flowing through the plurality of through holes 301 can be more uniform. On the other hand, compared to providing a through hole 301 with a larger area on the end cap 300, the elastic sheet 400 can be more conveniently connected with the end cap 300 without reducing the structural strength of the end cap 300 at the connection of the elastic sheet 400.

Referring to fig. 4-5, for example, an end cap 300 is provided with mounting holes 302. The elastic sheet 400 has a connection bar 410. The connecting rod 410 may be inserted into the mounting hole 302. The elastic piece 400 may fix the elastic piece 400 to the end cap 300 by the connection between the connection rod 410 and the mounting hole 302. Meanwhile, the connecting rod 410 and the mounting hole 302 can be connected through threads, can also be connected through a buckle, and can also be adhered after the connecting rod 410 is inserted into the mounting hole 302 through an adhesive. Adopt the end cap 300 and the flexure strip 400 of this structure, have the convenient advantage of connection to, when being connected flexure strip 400 with end cap 300, this structure still has the guidance quality, can install the accurate position with flexure strip 400 better, thereby guarantees when not having water pressure that flexure strip 400 can be with the fine shutoff of through-hole 301, avoids appearing the phenomenon of leaking.

Further, the connecting rod 410 includes a head portion 411 and a neck portion 412 connected to each other. The neck portion 412 is received in the mounting hole 302, the head portion 411 is located outside the mounting hole 302, and the outer diameter of the head portion 411 is larger than the inner diameter of the mounting hole 302. After the connecting rod 410 of the elastic piece 400 is inserted into the mounting hole 302, the elastic piece 400 is clamped on the end cap 300 through the head 412. In design, the head 411 may also be made of a material with elasticity, so that when the elastic sheet 400 is installed, the head 411 is only required to be forcibly pushed into the installation hole 302, thereby further simplifying the installation process of the elastic sheet 400.

Illustratively, the reverse osmosis cartridge 200 may be plugged into the end cap 300, and an outer circumferential surface of the reverse osmosis cartridge 200 is sealingly connected with an inner circumferential surface of the end cap 300, as shown in fig. 7. The end cap 300 encloses the end of the reverse osmosis cartridge 200 where the concentrate outlet end 201 is located. The end cap 300 is fitted over the end of the reverse osmosis filter element 200 and the two may be sealingly connected together using an adhesive or tape. In this way, the end cap 300 can be firmly connected to the reverse osmosis filter element 200, and the end cap 300 can also tighten the reverse osmosis filter element 200 to prevent the reverse osmosis filter element 200 from loosening due to the pressure applied thereto during the use process. In addition, the connection mode has a simple structure and is convenient to process and manufacture.

As shown in fig. 8, the reverse osmosis cartridge assembly 100 further includes a center tube 500, as previously described. The reverse osmosis cartridge 200 may be wrapped around the center tube 500. The generated pure water filtered by the reverse osmosis filter cartridge 200 may be discharged through the central tube 500. Wherein the end of the center tube 500 may be secured to the end cap 300. Further, an end of the center tube 500 protrudes out of the reverse osmosis filter element 200, and a center tube installation hole 303 may be provided on the end cap 300, and the end cap 300 may be fixed to the reverse osmosis filter element 200 by inserting the center tube 500 into the center tube installation hole 303. Alternatively, the central tube 500 may extend a small portion of the concentrate outlet end 201 of the reverse osmosis cartridge 200, and a groove may be provided on the inner side of the end cap 300, into which the extended portion of the central tube 500 may be inserted. Thus, the center tube 500 does not have to extend through the end cap 300, saving material and providing both a securing and positioning function.

Of course, the center tube 500 may not be fixed to the end cap 300, and the outer circumferential surface of the reverse osmosis filter element 200 and the inner circumferential surface of the end cap 300 may be sealingly connected to each other to fix them together.

Reverse osmosis cartridge assembly 100 is further fixed with end cap 300 through center tube 500, and on the one hand, center tube 500 can play the guide effect to the installation of end cap 300, and on the other hand, end cap 300 can also play limiting displacement to center tube 500, consequently makes this reverse osmosis cartridge assembly 100's structure more stable.

Illustratively, the number of the elastic sheets 400 is plural, and is distributed around the center tube 500. Since the concentrate outlet end 201 is disposed at the end of the reverse osmosis cartridge 200, the concentrate can be discharged through the through-holes 301 of the end cap 300. A plurality of through holes 301 may be provided on the end cap 300, with an elastic sheet 400 provided on each through hole 301. Thus, the flow rate of the concentrate out of the reverse osmosis filter cartridge 200 can be increased. And the water yield of each position of the reverse osmosis filter element 200 in the circumferential direction can be ensured to be uniform, and the water outlet efficiency of the reverse osmosis filter element 200 is improved.

According to another aspect of the present invention, there is provided a water purifier, comprising any one of the reverse osmosis filter element assemblies 100 described above.

Illustratively, the water purifier further comprises a water inlet electromagnetic valve 610, a booster pump 620 and a water storage device 630. The water outlet of the water inlet solenoid valve 610 is communicated to the water inlet of the booster pump 620, and the water outlet of the booster pump 620 is communicated to the raw water port 101 of the reverse osmosis filter element assembly. Wherein the water storage device 630 may store water of low TDS. The reverse osmosis cartridge assembly 100 is flushed with low TDS water stored therein. The water storage device 630 comprises a pressure tank, the pure water side 633 of the pressure tank is communicated to the raw water port 101 of the reverse osmosis filter element assembly 100 through a first pipeline 631, and the pure water side 633 of the pressure tank can also be communicated to the pure water port 102 of the reverse osmosis filter element assembly 100 through a second pipeline 632. The first pipeline 631 is provided with a first check valve 640, the first check valve 640 is conducted from the pressure tank to the raw water port 101, the second pipeline 632 is provided with a second check valve 650, and the second check valve 650 is conducted from the pure water port 102 to the pressure tank.

Utilize the pressure tank to store the water of low TDS as water storage device 630 to replace the higher raw water and the dense water that have ion concentration in reverse osmosis filter core subassembly 100, realize the effect of pure water bubble membrane. In the case of the reverse osmosis cartridge assembly 100 having the end cap 300 described above, the concentrate in the reverse osmosis cartridge 200 just before the flexible sheet 400 of the end cap 300 may be discharged using the low TDS water without discharging all of the concentrate in the reverse osmosis cartridge assembly 100. From this, can realize utilizing the water of less low TDS to accomplish the pure water bubble membrane, reduce the waste of water resource, reduce the use cost of product. In addition, the water storage amount of the water storage device 630 can be reduced, so that the volume of the water storage device 630 is reduced, and the size of the water purifier is reduced.

In one embodiment, as shown in fig. 9, the water storage device 630 may comprise a pneumatic pressure tank. A bladder may be provided within the pneumatic pressure barrel to squeeze the low TDS water within the plain water side 633 out through the expansion of the bladder. The pure water side 633 of the pneumatic pressure tank is connected to the raw water port 101 through a first conduit 631. The pure water side 633 of the pneumatic pressure tank may also be communicated to the pure water port 102 via a second line 632. The first pipe 631 is provided with a first check valve 640, and the first check valve 640 is communicated from the pneumatic pressure tank to the raw water port 101. A second check valve 650 is disposed on the second conduit 632. The second check valve 650 is conducted from the pure water port 102 to the pneumatic pressure tank.

When the in-process of storing the water of low TDS in the pure water side 633 to pneumatic pressure bucket, the water of low TDS can get into pneumatic pressure bucket through second pipeline 632 in, extrude the gasbag, the gasbag compression. When the purifier stops to impound to pneumatic pressure tank in, the user stops the water receiving to when entering the stage of pure water bubble membrane, the gasbag will promote the water discharge of the low TDS of the pure water side 633 of pneumatic pressure tank, until the pressure in the gasbag is the same with atmospheric pressure, stop the drainage.

Therefore, the water purifier adopting the pneumatic pressure barrel is simple in water path structure, the pneumatic pressure barrel can be only connected with the reverse osmosis filter element assembly 100, the water path is reduced, and the water leakage risk caused by the arrangement of the water pipe is reduced.

Pneumatic pressure barrels having bladders are well known to those skilled in the art and the method of use is well within the skill of those skilled in the art and will not be described in detail.

In another embodiment, as shown in FIG. 10, the water storage device 630 may comprise a water-driven pressure drum. The water-driven pressure drum may be drained by hydraulically driving the low TDS water in the clean water side 633. During the process of introducing low TDS water into the pure water side 633 of the water drive pressure barrel, the low TDS water will squeeze the raw water in the raw water side 634 to discharge. In one embodiment, the pure water side 633 of the water-driving pressure tank is communicated to the raw water port 101 through a first pipe 631, and the pure water side 633 of the water-driving pressure tank is also communicated to the pure water port 102 through a second pipe 632. The first pipe 631 is provided with a first check valve 640, and the first check valve 640 is communicated from the water driving pressure tank to the raw water port 101. The second pipeline 632 is provided with a second check valve 650, and the second check valve 650 is conducted from the pure water port 102 to the water drive pressure tank. The raw water side 634 of the water drive pressure tank communicates to the water inlet of the water inlet solenoid valve 610.

In the process of storing the low TDS water in the water drive pressure tank, the pressure of the pure water side 633 rises, and the raw water on the raw water side 634 is squeezed and discharged. The discharged raw water enters the booster pump 620 through the water inlet electromagnetic valve 610, and the raw water in the water drive pressure barrel can be reused. The raw water side 634 is connected to the water inlet of the water inlet solenoid valve 610, i.e., to the tap water pipe. The water driving pressure tank can inject water to the raw water side 634 by using the pressure in the tap water pipe in the process of flushing the reverse osmosis filter core assembly 100, and the water with low TDS on the pure water side 633 is squeezed and discharged. Water drive pressure bucket is when using because former water side 634 links to each other with the running water, and its pushing pressure can keep certain, like this, at the water exhaust's of low TDS in-process, just can guarantee that the play water speed of the water of low TDS keeps invariable, avoids at the end of the water discharge of low TDS, and the pressure is not enough to appear, causes the pressure bucket to reverse osmosis filter core subassembly 100 and washes incomplete phenomenon.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front", "rear", "upper", "lower", "left", "right", "horizontal", "vertical", "horizontal" and "top", "bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner" and "outer" refer to the interior and exterior relative to the contours of the components themselves.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe the spatial relationship of one or more components or features shown in the figures to other components or features. It is to be understood that the spatially relative terms are intended to encompass not only the orientation of the component as depicted in the figures, but also different orientations of the component in use or operation. For example, if an element in the drawings is turned over in its entirety, the articles "over" or "on" other elements or features will include the articles "under" or "beneath" the other elements or features. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". Further, these components or features may also be positioned at various other angles (e.g., rotated 90 degrees or other angles), all of which are intended to be encompassed herein.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, elements, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many more modifications and variations are possible in light of the teaching of the present invention and are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (10)

1. The utility model provides a reverse osmosis filter element group spare, includes reverse osmosis filter core (200), reverse osmosis filter core's axial direction's terminal surface is dense water play water end (201), a serial communication port, reverse osmosis filter element group spare still includes end cap (300) and flexure strip (400), the end cap cover is in dense water goes out the water and serves, the flexure strip is in the outside of end cap is connected to the end cap, still be provided with through-hole (301) on the end cap, the flexure strip covers the through-hole, at least part of flexure strip outwards perks under water pressure, in order to expose the through-hole.

2. The reverse osmosis filter cartridge assembly of claim 1, wherein

The area (304) of the outer surface of the end cap (300) covered by the resilient sheet (400) is bowl-shaped, wherein the bowl mouth of the area faces the outside of the end cap; and/or

The surface (401) of the resilient sheet covering the end cap is bowl-shaped, wherein the bowl mouth of the surface faces the inside of the end cap.

3. The reverse osmosis cartridge assembly of claim 1, wherein the center of the resilient sheet (400) is connected to the end cap (300).

4. The reverse osmosis cartridge assembly according to claim 3, wherein the number of through holes (301) is multiple and evenly distributed around the center of the elastic sheet (400).

5. The reverse osmosis cartridge assembly according to claim 1, wherein the end cap (300) is provided with a mounting hole (302), and the elastic sheet (400) has a connecting rod (410) inserted into the mounting hole.

6. The reverse osmosis cartridge assembly of claim 5, wherein the connecting rod (410) comprises a head (411) and a neck (412) connected to each other, the neck being received within the mounting hole (302), the head being located outside the mounting hole and the head having an outer diameter greater than an inner diameter of the mounting hole.

7. The reverse osmosis cartridge assembly of claim 1, wherein the reverse osmosis cartridge is inserted into the end cap with an outer peripheral surface of the reverse osmosis cartridge sealingly connected with an inner peripheral surface of the end cap.

8. The reverse osmosis cartridge assembly of claim 7, further comprising a center tube (500) around which the reverse osmosis cartridge (200) is wound, an end of the center tube being secured to the end cap (300).

9. A water purification machine, comprising a reverse osmosis cartridge module (100) according to any one of claims 1 to 8.

10. The water purifier according to claim 9, further comprising a water inlet solenoid valve (610), a booster pump (620) and a water storage device (630), wherein a water outlet of the water inlet solenoid valve is communicated to a water inlet of the booster pump, a water outlet of the booster pump is communicated to a raw water port (101) of the reverse osmosis filter core assembly (100), the water storage device comprises a pressure barrel, a pure water side (633) of the pressure barrel is communicated to a raw water port of the reverse osmosis filter core assembly through a first pipeline (631), a pure water side (633) of the pressure barrel is also communicated to a pure water port of the reverse osmosis filter core assembly through a second pipeline (632), wherein a first check valve (640) is arranged on the first pipeline, a conducting direction of the first check valve is from the pressure barrel to the raw water port, and a second check valve (650) is arranged on the second pipeline, the conduction direction of the second check valve is from the pure water port to the pressure barrel.

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