CN206463789U - Counter-infiltration filter core, reverse osmosis purified water system and anti-penetration water purifier - Google Patents

Abstract

The utility model discloses a reverse osmosis filter element, a reverse osmosis water purification system and a reverse osmosis water purifier, wherein the reverse osmosis filter element includes a membrane element and a casing, and the membrane element includes a central tube group, a plurality of reverse osmosis membrane groups, a first The end cover and the second end cover, the central tube group includes a pure water pipe and a plurality of waste water pipes; a plurality of reverse osmosis membrane groups are arranged around the central tube group; the first end cover and the second end cover respectively cover the multiple reverse osmosis The two ends of the permeable membrane group and the central tube group; the first end cover is provided with a waste water discharge port; the second end cover is provided with a pure water discharge port; the shell includes a bottle body and a cover body, the membrane element is installed in the shell body, and the cover body A waste water chamber is provided, and the waste water chamber is sealed and communicated with the waste water discharge port; the bottle body is provided with a pure water chamber and a raw water chamber, and the pure water chamber is connected with the pure water discharge port, and the raw water chamber and the gap between the membrane element and the bottle body are connected. The technical scheme of the utility model can simplify the structure at the cover of the casing of the reverse osmosis filter element.

Description

Reverse Osmosis Filters, Reverse Osmosis Water Purification Systems and Reverse Osmosis Water Purifiers

technical field

The utility model relates to the technical field of reverse osmosis water purification, in particular to a reverse osmosis filter element, a reverse osmosis water purification system and a reverse osmosis water purifier.

Background technique

A reverse osmosis filter element is used in a reverse osmosis water purifier to purify water. The reverse osmosis filter element generally includes a shell and a reverse osmosis membrane element. An existing reverse osmosis membrane element with side flow water feeds raw water, pure water and Waste water is separated, so that the inlet and outlet of raw water, pure water and waste water are all concentrated on the cover of the shell, resulting in a complicated structure at the cover of the shell of the reverse osmosis filter element.

Utility model content

The main purpose of the utility model is to provide a reverse osmosis filter element, aiming at simplifying the structure of the cover body of the reverse osmosis filter element shell.

In order to achieve the above object, the reverse osmosis filter element proposed by the utility model includes a membrane element and a casing, and the membrane element includes a central tube group, a plurality of reverse osmosis diaphragm groups, a first end cover and a second end cover, and the center The pipe group includes a pure water pipe and a plurality of waste water pipes arranged at intervals, and a plurality of waste water pipes are arranged around the pure water pipe; a plurality of reverse osmosis membrane groups are arranged around the central pipe group; the first The end cap and the second end cap respectively cover the two ends of the length direction of the plurality of reverse osmosis diaphragm groups and the central tube group, and are respectively sealed and connected with the plurality of reverse osmosis diaphragm groups; The first end cover is provided with a waste water outlet connected to the waste water pipe; the second end cover is provided with a pure water outlet connected to the pure water pipe; the shell includes a bottle body and a cover Fit the cover of the bottle body, the membrane element is installed in the housing, the cover is docked with the first end cover, and the cover is provided with waste water cavities respectively communicated with the external waterway, so The waste water cavity is sealed and communicated with the waste water outlet; the bottle body is docked with the second end cap, and the bottle body is provided with a pure water cavity and a raw water cavity communicated with an external waterway, and the pure water cavity and the The pure water discharge port is in sealing communication, and the raw water chamber is in communication with the gap between the membrane element and the bottle body.

Preferably, the end of the pure water pipe away from the pure water outlet is blocked, so that the pure water flows toward the pure water outlet; and/or, the end of the waste water pipe away from the waste water outlet is blocked so that waste water flows towards the waste water outlet.

Preferably, the number of waste water pipes is N, and N is greater than or equal to 3; the cross-section of the pure water pipe is arranged in an N-gon, and has N side surfaces correspondingly, and each side surface is provided with There is a pure water inlet hole connected to the inner pipeline of the pure water pipe; each of the waste water pipes is set corresponding to a position on the side surface.

Preferably, the cover body includes a top wall and a cover edge extending from the edge of the top wall toward the bottle body, and a first annular rib protrudes from the inner surface of the top wall, and the first annular rib The inner peripheral wall is arranged to form the waste water cavity; the surface of the first end cap facing the waste water pipe is protruded with a plurality of first protruding pipes extending into the waste water pipe and communicating with the waste water pipe, the first The surface of the end cap facing the cover body is provided with a first connecting pipe, and a plurality of the first extending pipes communicate with the first connecting pipes respectively, and the first connecting pipes extend into the waste water cavity and communicate with the first connecting pipes. The first annular rib is in sealing contact, and the mouth of the first connecting pipe facing the cover constitutes the waste water outlet.

Preferably, the bottom of the bottle body is provided with a second annular rib protruding inward, the inner peripheral wall of the second annular rib surrounds the pure water chamber, and the outer peripheral wall of the second annular rib is in contact with the bottle The surrounding walls of the body together form the raw water cavity; the second end cover protrudes toward the surface of the pure water pipe and is provided with a second protruding pipe extending into the pure water pipe and communicating with the pure water pipe , the surface of the second end cap facing the cover is provided with a second connecting pipe, the second extending pipe communicates with the second connecting pipe, the second connecting pipe extends into the pure water cavity and Sealed against the second annular rib, the nozzle of the second connecting pipe facing the bottom of the bottle constitutes the pure water outlet.

Preferably, each of the reverse osmosis membrane sets has a first part located inside the central tube set and a second part located outside the central tube set, and each of the waste water pipes and the pure water pipes is enclosed by The first part of one reverse osmosis membrane group is separated; the second part of multiple reverse osmosis membrane groups surrounds the center tube group.

Preferably, each of the reverse osmosis membrane sets includes a reverse osmosis membrane, an inlet water diversion net and a pure water diversion net; The second parts of the plurality of reverse osmosis membrane groups are stacked and collectively wound around the central tube group in the circumferential direction; a water inlet channel is formed between the front interlayers of the same reverse osmosis membrane; two adjacent reverse osmosis membranes A water production flow channel is formed between the interlayers on the reverse side of the membrane; the water inlet flow channel and the waste water pipe are located in the water intake flow channel, and the pure water flow guide network is located in the water production flow channel.

The utility model also proposes a reverse osmosis water purification system, the reverse osmosis water purification system includes a water inlet pipeline, a pure water pipeline, a waste water pipeline and a reverse osmosis filter element; the reverse osmosis filter element includes a membrane element and a shell, and the The membrane element includes a central tube group, a plurality of reverse osmosis membrane groups, a first end cover and a second end cover, the central tube group includes a pure water pipe and a plurality of waste water pipes arranged at intervals, and a plurality of the waste water pipes Arranged around the pure water pipe; a plurality of reverse osmosis diaphragm groups are arranged around the central tube group; the first end cap and the second end cap are respectively covered with the plurality of reverse osmosis diaphragm groups and the two ends of the length direction of the central tube group, and are respectively sealed and connected with the plurality of reverse osmosis membrane groups; the first end cover is provided with a waste water outlet connected to the waste water pipe; the The second end cap is provided with a pure water outlet connected to the pure water pipe; the shell includes a bottle body and a cover that is closed to the bottle body, and the membrane element is installed in the shell, so The cover body is docked with the first end cover, and the cover body is provided with waste water cavities respectively connected with the external waterway, and the waste water cavity is in sealing communication with the waste water outlet; the bottle body is connected with the second end The cover is docked, and the bottle body is provided with a pure water chamber and a raw water chamber that communicate with the external water circuit. The pure water chamber is in sealing communication with the pure water discharge port. The gap between them is connected; the waste water line is connected with the waste water cavity of the cover, the water inlet line is connected with the raw water cavity of the bottle, and the pure water line is connected with the bottle The pure water cavity is connected.

Preferably, the water inlet pipeline is sequentially provided with a pre-composite filter element, a water inlet valve and a booster pump along the water inlet direction; the pure water pipeline is sequentially provided with a rear granular carbon filter element, a one-way valve and a A high-pressure switch, a waste water valve is provided on the waste water pipeline; the reverse osmosis water purification system also includes a water outlet device, and the water outlet device communicates with the nozzle of the pure water pipeline away from the reverse osmosis filter element.

The utility model also proposes a reverse osmosis water purifier, the reverse osmosis water purification system includes a water inlet pipeline, a pure water pipeline, a waste water pipeline and a reverse osmosis filter element; the reverse osmosis filter element includes a membrane element and a shell, and the The membrane element includes a central tube group, a plurality of reverse osmosis membrane groups, a first end cover and a second end cover, the central tube group includes a pure water pipe and a plurality of waste water pipes arranged at intervals, and a plurality of the waste water pipes Arranged around the pure water pipe; a plurality of reverse osmosis diaphragm groups are arranged around the central tube group; the first end cap and the second end cap are respectively covered with the plurality of reverse osmosis diaphragm groups and the two ends of the length direction of the central tube group, and are respectively sealed and connected with the plurality of reverse osmosis membrane groups; the first end cover is provided with a waste water outlet connected to the waste water pipe; the The second end cap is provided with a pure water outlet connected to the pure water pipe; the shell includes a bottle body and a cover that is closed to the bottle body, and the membrane element is installed in the shell, so The cover body is docked with the first end cover, and the cover body is provided with waste water cavities respectively connected with the external waterway, and the waste water cavity is in sealing communication with the waste water outlet; the bottle body is connected with the second end The cover is docked, and the bottle body is provided with a pure water chamber and a raw water chamber that communicate with the external water circuit. The pure water chamber is in sealing communication with the pure water discharge port. The gap between them is connected; the waste water line is connected with the waste water cavity of the cover, the water inlet line is connected with the raw water cavity of the bottle, and the pure water line is connected with the bottle The pure water cavity is connected.

In the technical solution of the utility model, the waste water outlet of the membrane element is arranged on the first end cover, and the pure water outlet is arranged on the second end cover, so that pure water and waste water can be discharged from different directions. The body only needs to be provided with a waste water chamber connected to the external waterway, without the need for a pure water chamber and a raw water chamber, which simplifies the structure of the cover body. The waterway converter can realize the separation of the waterway, which is convenient for the alignment and sealing installation of the cover, and simplifies the assembly of the entire reverse osmosis filter element; through the waste water chamber and the waste water discharge outlet, the raw water chamber and the membrane element are connected with the bottle body. The gap between the pure water chamber and the pure water outlet is sealed and connected, realizing the water channel structure in which the filter element cover enters raw water, discharges waste water, and the bottle body discharges pure water, which can better distinguish pure water and waste water, and the smaller pure water is Risk of wastewater contamination.

Description of drawings

Fig. 1 is the structural representation of an embodiment of the utility model reverse osmosis filter element;

Fig. 2 is a schematic diagram of an exploded structure of the reverse osmosis filter element shown in Fig. 1;

Fig. 3 is the sectional structural representation along A-A ' of reverse osmosis filter element shown in Fig. 1;

Fig. 4 is the sectional structure schematic diagram of the membrane element of the reverse osmosis filter element shown in Fig. 3;

Fig. 5 is the schematic structural view of the central tube group of the reverse osmosis filter element shown in Fig. 1;

Fig. 6 is the plan view that a reverse osmosis membrane group cooperates with a waste water pipe and a pure water pipe in the membrane element of the reverse osmosis filter element shown in Fig. 1;

Fig. 7 is a structural schematic diagram of an embodiment of the reverse osmosis water purification system of the present invention.

Explanation of reference numbers:

The realization of the purpose of the utility model, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present utility model, the directional indication is only used to explain the position in a certain posture (as shown in the accompanying drawing). If the relative positional relationship, movement conditions, etc. between the components shown in the figure below are changed, if the specific posture changes, the directional indication will also change accordingly.

In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. Implying their relative importance or implying the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In addition, the technical solutions of the various embodiments can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist , also not within the scope of protection required by the utility model.

The utility model provides a reverse osmosis filter element.

Please refer to Fig. 1 to Fig. 3, the direction indicated by the arrow in Fig. 3 is the direction of water flow, in the embodiment of the present utility model, the reverse osmosis filter element 900 includes a membrane element 100 and a housing 200, and the membrane element 100 includes a central tube group 110, a plurality of reverse osmosis membrane groups 120, a first end cover 130 and a second end cover 140, the central tube group 110 includes a pure water pipe 111 and a plurality of waste water pipes 112 arranged at intervals, and a plurality of the The waste water pipe 112 is arranged around the pure water pipe 111; a plurality of reverse osmosis diaphragm groups 120 are arranged around the central pipe group 110; the first end cap 130 and the second end cap 140 are respectively covered on the The plurality of reverse osmosis membrane groups 120 and the two ends in the length direction of the central tube group 110 are sealed and connected to the plurality of reverse osmosis membrane groups 120 respectively; the first end cap 130 is provided with the The waste water outlet 131 (see FIG. 4 ) that is connected to the pure water pipe 111; the second end cover 140 is provided with a pure water outlet 141 (see FIG. 4 ) that is connected to the waste water pipe 112; The casing 200 includes a bottle body 210 and a cover body 220 that covers the bottle body 210, the membrane element 100 is installed in the casing 200, and the cover body 220 is docked with the first end cap 130, so The cover body 220 is provided with a waste water cavity communicating with the external waterway, and the waste water cavity is sealed and communicated with the waste water outlet 131; the bottle body 210 is docked with the second end cap 140, and the bottle body 210 is provided with The pure water chamber and the raw water chamber respectively communicated with the external water circuit, the pure water chamber is in sealing communication with the pure water outlet 141, and the raw water chamber is connected with the gap between the membrane element 100 and the bottle body 210 .

In the technical solution of the utility model, the waste water outlet 131 of the membrane element 100 is arranged on the first end cover 130, and the pure water outlet 141 is arranged on the second end cover 140, so that pure water and waste water can be discharged from different directions, so , the cover 220 only needs to be provided with a waste water chamber communicated with the external waterway, without the need for a pure water chamber and a raw water chamber, which simplifies the structure of the cover 220. At the same time, the bottle body 210 is provided with pure water chambers communicated with the external waterway respectively. The water chamber and the raw water chamber can realize the separation of the waterway without the aid of a waterway converter, which facilitates the alignment and sealing installation of the cover body 220, and simplifies the assembly of the entire reverse osmosis filter element 900; the waste water chamber is connected to the waste water outlet 131 in a sealed manner , the raw water chamber is connected with the gap between the membrane element 100 and the bottle body 210, and the pure water chamber is sealed and connected with the pure water discharge port 141, realizing the water channel structure in which the filter element cover 220 discharges waste water, the bottle body 210 enters raw water and exits pure water , can better distinguish pure water and waste water, and reduce the risk of pure water being polluted by waste water.

Wherein, the central pipe set 110 of the reverse osmosis membrane element 100 includes a pure water pipe 111 and a plurality of waste water pipes 112 surrounding the pure water pipe 111; each waste water pipe 112 of the reverse osmosis membrane element 100 corresponds to a reverse osmosis membrane set 120 , so that multi-membrane coiling can be realized, the number of flow channels can be increased, which is conducive to improving the raw water flux, and solves the problem that part of the reverse osmosis membrane 121 does not achieve the purpose of filtration due to too long reverse osmosis membrane 121 and insufficient osmotic pressure; Since the central tube set 110 is wound at the center by the multi-page reverse osmosis membrane set 120, after the first end cap 130 and the second end cap 140 seal the two ends of these reverse osmosis membrane sets 120, multiple sheets can be formed. The reverse osmosis membrane group 120 outside side flows into the raw water channel, and the middle waste water pipe 112 discharges the raw water of the waste water; when the reverse osmosis filter element 900 is used, the raw water enters through the side flow, the flow channel is narrowed, and the water inlet area is reduced. And flow process also increases greatly, therefore can increase the time that raw water contacts with reverse osmosis membrane 121, improves raw water recovery rate; Simultaneously, because reduced raw water inflow area, can increase reverse osmosis membrane 122 surface flow velocity (in inlet When the water flux is constant, the relationship between the water inlet flux Q and the water flow velocity V is V=Q/S; where, S is the water inlet area, specifically, S=Ld; L is the length of the diaphragm at the water inlet, d is the thickness of the section, and the side flow mainly reduces L, and the thickness d) can be reduced by using the water inlet diversion net 122 with a small thickness, so that the concentration polarization on the surface of the reverse osmosis membrane 121 can be reduced, and the reverse osmosis membrane 121 can be reduced. The pollution rate of the osmotic membrane element 100 is beneficial to improve the recovery rate of raw water, thereby improving the waste of raw water.

Please refer to Fig. 3, in order to facilitate the collection of pure water, the end of the pure water pipe 111 away from the pure water outlet 141 can be blocked so that the pure water flows towards the pure water outlet 141; at this time, The pure water flows in a certain direction and can collect pure water reliably. In order to facilitate the export of waste water, it is possible to design at least one end of the waste water pipe 112 away from the waste water outlet 131 to be blocked, so that the waste water flows toward the waste water outlet 131. After blocking, the direction of waste water flow is certain, which can be reliably collection of waste water. In actual use, the reverse osmosis membrane element 100 is generally placed vertically, and the corresponding pure water pipe 111 and a plurality of waste water pipes 112 are also placed in the vertical direction. At this time, waste water is collected from the upper end and Waste water is collected at the lower end, the water flow is uniform, and it is conducive to the sealing of the waterway, so as to avoid the mixing or pollution of pure water and waste water, which is convenient for the design of the reverse osmosis water system. For specific flow conditions, please refer to 3, where the dotted line with the arrow indicates the direction of water flow, pure water enters the pure water pipe 111 from the pure water inlet hole 113 (see Figure 4), and flows out of the pure water along the pure water pipe 111. Pipe 111; waste water enters the waste water pipe 112 from the waste water inlet hole 114 (please refer to FIG. 5 ), and flows out of the waste water pipe 112 along the waste water pipe 112. Please refer to Fig. 2 and Fig. 4, in order to realize the separation of raw water and waste water, a ring of sealing ribs 134 can be arranged on the outer wall of the first end cover 130, and the sealing ribs 134 are close to the bottle body 210, which can prevent the raw water from flowing to In the cover body 220, the raw water is prevented from being polluted by the waste water at the cover body.

The specific number of waste water pipes 112 determines the number of reverse osmosis diaphragm sets 120 and also determines the size of the pure water pipe 111. Specifically, one reverse osmosis diaphragm set 120 corresponds to one waste water pipe 112. The more waste water pipes 112, the more The more the number of reverse osmosis membrane sets 120 is, the greater the flux of the corresponding reverse osmosis membrane element 100 is, and the size of the pure water pipe 111 is correspondingly larger. The specific number and shape of the waste water pipes 112 and the shape of the corresponding pure water pipes 111 can be set according to the actual situation. Please refer to FIG. 5 and understand in conjunction with FIG. 4 . N, where N is greater than or equal to 3; the cross section of the pure water pipe 111 is arranged in an N-gon shape, and correspondingly has N side surfaces, and each of the side surfaces is provided with a pipe connected to the inside of the pure water pipe 111 The pure water inlet hole 113 of the pipeline; each of the waste water pipes 112 is set corresponding to a position of the side surface, and each of the waste water pipes 112 is provided with a pipe that communicates with the internal pipeline of the waste water pipe 112 . At this time, the side of each of the waste water pipes 112 facing the side surface can be a plane, so that the reverse osmosis membrane set 120 can be inserted and wound conveniently. Specifically, in this embodiment, N=5, that is, the number of waste water pipes 112 is 5, and the cross-section of the pure water pipe 111 is roughly set in a regular pentagon, correspondingly having five side surfaces, and each of the waste water pipes 112 It is set corresponding to the position of one side surface. This arrangement can ensure that each waste water pipe 112 corresponds to one side surface of the pure water pipe 111 alone, and will not interfere with each other during the film rolling operation, which facilitates the film rolling operation. In order to ensure that the pure water produced by the reverse osmosis membrane group 120 corresponding to each waste water pipe 112 can be collected in the pure water pipe 111 in a timely manner, a plurality of pure water inlet holes 113 are arranged on each side surface at intervals , and a plurality of pure water inlet holes 113 are evenly arranged along the length direction of the pure water pipe 111, thus, the pure water at each position can quickly flow into the nearer pure water inlet holes 113; in order to be able to To remove waste water in time, each of the waste water pipes 112 is provided with a plurality of internal passage waste water inlet holes 114 connected to the waste water pipe 112 at intervals, and a plurality of waste water inlet holes 114 are evenly discharged along the length direction of the waste water pipe 112. Cloth, to ensure that the waste water at each position can quickly flow into the nearby waste water inlet hole 114 and enter the internal passage of the waste water pipe 112.

In order to facilitate the film rolling operation, the pure water pipe 111 and a plurality of the waste water pipes 112 can be combined to form a cylindrical shape; when the film is rolled, the central tube group 110 is relatively uniform when rotating, and it is not easy to be skewed. The appearance of the product will also be relatively uniform, which is convenient for installing the rolled product into the shell of the reverse osmosis membrane element 100, and also facilitates the alignment and sealing of the end cover of the reverse osmosis membrane element 100 and the rolled product.

The pure water chamber can be formed by ribs arranged in the cover 220, or can be formed by digging a groove in the top wall 221, please refer to FIG. 3. In this embodiment, the cover 220 includes a top wall 221 And the cover edge 222 extending from the edge of the top wall 221 toward the bottle body 210, the cover edge 222 is sealed and connected with the bottle body 210 to realize the sealing of the shell, and the inner surface of the top wall 221 is protruded with a first ring Rib 223, the inner peripheral wall of the first annular rib 223 is surrounded to form the waste water cavity; the waste water cavity can be formed by a first annular rib 223 arranged in a ring, the structure is simple, it is convenient for production and manufacture, and it is also convenient for reverse osmosis Assembly of filter element 900. The surface of the first end cover 130 facing the waste water pipe 112 is protruded with a plurality of first extending pipes 132 extending into the waste water pipe 112 and communicating with the waste water pipe 112. The first extending pipes 132 are connected to the The waste water pipes 112 are provided in one-to-one correspondence, and the first end cap 130 is connected to the waste water pipe 112 through the first extension pipe 132, and the waste water pipe 112 can be positioned. The surface is provided with a first connecting pipe 133, and a plurality of the first extending pipes 132 communicate with the corresponding first connecting pipes 133, and the waste water collected by each waste water pipe 112 flows into the first connecting pipe 132 through the corresponding first extending pipe 132. A connecting pipe 133 is collected in the first connecting pipe 133. The first connecting pipe 133 extends into the waste water chamber and is in sealing contact with the first annular rib 223. The first connecting pipe 133 faces The mouth of the cover 220 constitutes the waste water outlet 131. After the first connecting pipe 133 is sealed with the first annular rib 223, the waste water can flow from the waste water pipe 112 to the first cover 220 and then to the waste water chamber. , the entire waste water flow path is independently sealed.

The pure water chamber and the raw water chamber can also be formed and distinguished by ribs arranged at the bottom of the bottle body 210. Please refer to FIG. 3 further. In this embodiment, the bottom of the bottle body 210 is provided with a second Two annular ribs 211, the inner peripheral wall of the second annular rib 211 surrounds the pure water cavity, the outer peripheral wall of the second annular rib 211 and the peripheral wall of the bottle body 210 jointly surround the raw water cavity , the pure water cavity can be formed by a second annular rib 211 arranged in a ring, and then the raw water cavity is formed by the surrounding wall of the bottle body 210 and the second annular rib 211. The structure of the bottle body 210 is simple and easy to produce and manufacturing; the second end cover 140 protrudes toward the surface of the pure water pipe 111 and is provided with a second extending pipe 142 extending into the pure water pipe 111 and communicating with the pure water pipe 111, through the second The extension pipe 142 realizes the docking between the second end cover 140 and the pure water pipe 111, and can position the pure water pipe 111. The second end cover 140 is provided with a second connecting pipe 143 on the surface facing the cover body 220, The second extending pipe 142 communicates with the second connecting pipe 143, and the pure water is reliably guided out from the pure water pipe 111 through the second extending pipe 142 and the second connecting pipe 143. The second connecting pipe 143 protrudes into the pure water chamber and is in sealing contact with the second annular rib 211 , the mouth of the second connecting pipe 143 toward the bottom of the bottle body 210 constitutes the pure water discharge port 141 , the second After the sealing connection between the connecting pipe 143 and the second annular rib 211, the pure water can flow from the pure water pipe 111 to the second cover body 220 and then into the pure water cavity. The entire pure water flow path is independently sealed and will not be affected by waste water and Pollution of raw water.

In order to more smoothly separate pure water from waste water and form a water flow channel, please refer to FIG. The second part located outside the central tube group 110, each of the waste water pipes 112 and the pure water pipe 111 is separated by a first part of the reverse osmosis membrane group 120; a plurality of the reverse osmosis membranes A second portion of the sheet set 120 surrounds the central tube set 110 . The first part of the reverse osmosis membrane set 120 separates the pure water pipe 111 from the waste water pipe 112, which is beneficial for the pure water pipe 111 and the waste water pipe 112 to receive pure water and waste water respectively. The second part of the reverse osmosis membrane set 120 is wound on Around the center tube group 110, an annular water flow channel is formed, through which the supply water flows and the pure water is separated through the reverse osmosis membrane, so that pure water and waste water can be distinguished to ensure the water purification effect.

Please refer to Fig. 6 further, each of the reverse osmosis diaphragm groups 120 includes a reverse osmosis diaphragm 121, an inlet water diversion net 122 and a pure water diversion net 123; an inlet water diversion net 122 and a pure water diversion net 123 They are respectively arranged on the front and back sides of the reverse osmosis membrane 121, and the raw water flows on the front side of the reverse osmosis membrane 121, and under the action of osmotic pressure, flows from the front side of the reverse osmosis membrane 121 to the reverse side of the reverse osmosis membrane 121. The pure water is permeated, and the pure water is generated on the reverse side of the reverse osmosis membrane 121 and flows to the pure water pipe 111 under the diversion action of the pure water diversion net 123 . Wherein, the reverse osmosis membrane 121 can be folded in half so that the front side is adjacent to the front side, and the back side is adjacent to the back side, so as to avoid unnecessary contact, thereby preventing the pure water from being polluted; Fold in half can also be folded in half with the reverse side facing inward, and a reasonable choice can be made according to the actual situation. In this embodiment, the reverse osmosis membrane 121 of each of the reverse osmosis membrane groups 120 is folded inward, and the second parts of the plurality of reverse osmosis membrane groups 120 are stacked and wound together in the circumferential direction. The central tube group 110; the water inlet channel is formed between the front interlayers of the same reverse osmosis membrane 121; the water production flow channel is formed between the reverse interlayers of two adjacent reverse osmosis membranes 121; the inlet water diversion The net 122 and the waste water pipe 112 are located in the water inlet channel, and the pure water diversion net 123 is located in the produced water channel. At this time, the water inlet flow channel and the water production flow channel are independent of each other and completely isolated, which can effectively ensure that the water inlet guide net 122 of each reverse osmosis membrane group 120 does not interfere with the pure water pipe 111 and other The reverse osmosis diaphragm 121 of the reverse osmosis diaphragm group 120 is in contact with the opposite surface; the pure water guide net 123 of each reverse osmosis diaphragm group 120 is not in contact with the waste water pipe 112 and other reverse osmosis The reverse osmosis membrane 121 of the membrane group 120 is in front contact; the raw water only flows in the water inlet flow channel and is finally discharged by the waste water pipe 112, and the pure water only flows in the produced water flow channel and is finally discharged by the pure water pipe 111, thereby avoiding pure water pollution. Guaranteed cleansing effect. In order to be able to export pure water smoothly, in this embodiment, the sides of the produced water flow channel except the side close to the pure water pipe 111 can be set to be closed and sealed, so that the produced water flow channel can only There is a pure water outlet facing the pure water pipe 111; at this time, the produced water flow channel forms a membrane bag with three sides sealed and one side open, and the mouth of the membrane bag faces the pure water pipe 111, so that the pure water in the membrane bag can only be directed toward The pure water pipe 111 flows; the raw water produces pure water after the action of the reverse osmosis membrane 121, and the pure water is formed in the membrane bag and flows to the mouth of the bag to enter the pure water pipe 111.

Please refer to Fig. 7 and understand it in conjunction with Fig. 1 and Fig. 3. The utility model also proposes a reverse osmosis water purification system, which includes a water inlet pipeline 600, a pure water pipeline 700, and a waste water pipeline 800 And the reverse osmosis filter element 900, the specific structure of the reverse osmosis filter element 900 refers to the above-mentioned embodiment, because this reverse osmosis water purification system has adopted all the technical solutions of all the above-mentioned embodiments, so it also has the advantages brought by the technical solutions of the above-mentioned embodiments All beneficial effects will not be repeated here. Wherein, the water inlet pipeline 600 communicates with the raw water cavity of the bottle body of the reverse osmosis filter element 900, the waste water pipeline 800 communicates with the waste water cavity of the cover body of the reverse osmosis filter element 900, and the pure water The pipeline 700 communicates with the pure water chamber of the bottle body of the reverse osmosis filter element 900 . The raw water flows into the raw water cavity from the water inlet pipe 600, and finally flows between the shell and the side of the membrane element to realize side flow water inflow. The raw water flows under the action of osmotic pressure and permeates to produce pure water, and the waste water enters the waste water pipe and flows to the cover. The waste water cavity then flows into the waste water pipeline 800 to be discharged, and the pure water enters the pure water pipe and flows to the pure water cavity at the bottom of the bottle body, and then flows into the pure water pipeline for delivery to users.

Please refer to Fig. 7 further, the water inlet pipeline 600 is provided with a pre-composite filter element 610, a water inlet valve 620 and a booster pump 630 sequentially along the water inlet direction; the pure water pipeline 700 is provided with a rear Granular carbon filter element 710, one-way valve 720 and high pressure switch 730, the waste water pipeline 800 is provided with a waste water valve 810; the reverse osmosis water purification system also includes a water outlet device 500, the water outlet device 500 is connected with the pure water The pipeline is communicated with the nozzle away from the reverse osmosis filter element 900 . The water inlet pipeline 600 is connected to an external water source, and the booster pump 630 provides power for the water flow, so that the raw water is purified by the reverse osmosis filter element 900 under the action of pressure. In order to control the size of the water flow, generally a The water inlet valve 620, the water inlet valve 620 may be a solenoid valve. In this embodiment, the water inlet pipeline 600 is further provided with a pre-composite filter element 610 ; The pre-composite filter element 610 generally includes a polypropylene fiber filter layer and an activated carbon filter layer, which can filter out large particles of impurities and some colored impurities in the water, and prevent impurities in the water from damaging the water inlet valve 620, the booster pump 630 and the reverse osmosis filter element 900 and other original parts, thereby effectively improving the service life of the reverse osmosis water purification system. After the raw water is purified by the reverse osmosis filter element 900, pure water and waste water are produced, and the pure water is output to the user through the pure water pipeline. In order to prevent the pure water from flowing backward, in this embodiment, the pure water pipeline 700 is provided with a check valve 720 and a high pressure switch 730, and the check valve 720 is connected in series between the high pressure switch 730 and the pure water Between the water outlets; by setting the one-way valve 720 and the high-pressure switch 730, the pure water is assisted to discharge, and the pure water is prevented from flowing backward. In order to further improve the water quality, a rear granular carbon filter element 710 can be installed on the pure water pipeline 800; the rear granular carbon filter element 710 is connected in series between the one-way valve 720 and the pure water outlet , to further filter the pure water flowing through, and filter out particulate impurities and some colored impurities in the water. The water outlet device 500 is in communication with the end of the pure water pipeline 700 away from the reverse osmosis filter element 900; the user directly operates and receives water on the water outlet device 500; the water outlet device 500 is generally a faucet, and in this embodiment, The water outlet device 500 is a UV sterilizing faucet, which can sterilize the pure water and improve the safety and sanitation of the pure water.

The utility model also proposes a reverse osmosis water purifier, which includes a reverse osmosis water purification system. The specific structure of the reverse osmosis water purification system refers to the above-mentioned embodiments. All the technical solutions of all the embodiments, therefore, also have all the beneficial effects brought by the technical solutions of the above embodiments, and will not be repeated here.

It should be noted that the technical solutions of the various embodiments of the present invention can be combined with each other, but it must be based on the realization of those skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, people should consider this The combination of technical solutions does not exist, nor is it within the scope of protection required by the utility model.

The above are only preferred embodiments of the present utility model, and are not therefore limiting the patent scope of the present utility model. All equivalent structural transformations made by using the utility model specification and accompanying drawings are directly or indirectly used in other related technologies. Fields are all included in the scope of patent protection of the utility model in the same way.

Claims (10)

1. A reverse osmosis filter element, characterized in that, comprising: The membrane element includes a central tube group, a plurality of reverse osmosis diaphragm groups, a first end cover and a second end cover, the central tube group includes a pure water pipe and a plurality of waste water pipes arranged at intervals, and many The waste water pipes are arranged around the pure water pipes; a plurality of reverse osmosis membrane groups are arranged around the central pipe group; the first end cap and the second end cap are respectively covered on the plurality of The two ends in the length direction of the reverse osmosis membrane group and the central tube group are respectively sealed and connected to the plurality of reverse osmosis membrane groups; the first end cap is provided with a waste water pipe connected to the waste water pipe outlet; the second end cover is provided with a pure water outlet connected to the pure water pipe; An outer casing, the outer casing includes a bottle body and a cover body that covers the bottle body; the membrane element is installed in the outer casing, the cover body is docked with the first end cap, and the cover body is provided with The waste water cavities respectively communicated with the external waterway, the waste water cavities are sealed and communicated with the waste water outlet; the bottle body is connected with the second end cap, and the bottle body is provided with a pure water chamber and a water tank connected with the external waterway. The raw water chamber, the pure water chamber is in sealing communication with the pure water outlet, and the raw water chamber is in communication with the gap between the membrane element and the bottle body. 2. The reverse osmosis filter element according to claim 1, wherein the end of the pure water pipe away from the pure water outlet is blocked, so that pure water flows toward the pure water outlet; and/ or, The end of the waste water pipe away from the waste water discharge port is blocked, so that the waste water flows toward the waste water discharge port. 3. the reverse osmosis filter element as claimed in claim 1, is characterized in that, the quantity of described waste water pipe is N, and N is greater than or equal to 3; The cross-section of the pure water pipe is arranged in an N-gon, and correspondingly has N side surfaces, and each side surface is provided with a pure water inlet hole that communicates with the inner pipeline of the pure water pipe; Each of the waste water pipes is set corresponding to a position of the side surface. 4. The reverse osmosis filter element according to claim 1, wherein the cover body includes a top wall and a cover edge extending from the edge of the top wall towards the bottle body, and the inner surface of the top wall is convex. A first annular rib is provided, and the inner peripheral wall of the first annular rib is arranged to form the waste water cavity; the surface of the first end cover facing the waste water pipe is protruded with a plurality of ribs extending into the waste water pipe and The first extension pipe connected to the waste water pipe, the first end cap facing the surface of the cover is provided with a first connection pipe, and a plurality of the first extension pipes are respectively connected with the first connection pipe, so The first connecting pipe extends into the waste water chamber and is in sealing contact with the first annular rib, and the mouth of the first connecting pipe facing the cover constitutes the waste water outlet. 5. The reverse osmosis filter element according to claim 1, characterized in that, the bottom of the bottle is inwardly protruded with a second annular rib, and the inner peripheral wall of the second annular rib is surrounded to form the pure water cavity , the outer peripheral wall of the second annular rib and the peripheral wall of the bottle body are jointly arranged to form the raw water chamber; the second end cap protrudes toward the surface of the pure water pipe and has a The second extension pipe communicated with the pure water pipe, the second end cover is provided with a second connection pipe on the surface facing the cover body, the second extension pipe communicates with the second connection pipe, so The second connecting pipe extends into the pure water cavity and is in sealing contact with the second annular rib, and the nozzle of the second connecting pipe facing the bottom of the bottle constitutes the pure water outlet. 6. The reverse osmosis filter element according to claim 1, wherein each of the reverse osmosis membrane groups has a first part positioned inside the central tube group and a second part positioned outside the central tube group , each of the waste water pipe and the pure water pipe is separated by a first part of the reverse osmosis membrane group; a plurality of second parts of the reverse osmosis membrane group surround the center pipe group . 7. The reverse osmosis filter element according to claim 6, wherein each said reverse osmosis membrane group comprises a reverse osmosis membrane, an inlet water diversion net and a pure water diversion net; The reverse osmosis diaphragm of each said reverse osmosis diaphragm group is folded inwards and arranged in half, and the second parts of a plurality of said reverse osmosis diaphragm groups are stacked and jointly wound around said central tube group along the circumferential direction; the same said reverse osmosis diaphragm group A water inlet channel is formed between the front interlayers of the osmotic membrane; a water production channel is formed between the reverse interlayers of two adjacent reverse osmosis membranes; the water inlet diversion net and the waste water pipe are located in the water inlet channel, and the The pure water diversion net is located in the produced water channel. 8. A reverse osmosis water purification system, characterized in that it comprises a water inlet pipeline, a pure water pipeline, a waste water pipeline and the reverse osmosis filter element as claimed in claims 1 to 7; the waste water pipeline and the cover The waste water cavity of the body is connected, the water inlet pipeline is connected with the raw water cavity of the bottle body, and the pure water pipeline is connected with the pure water cavity of the bottle body. 9. The reverse osmosis water purification system according to claim 8, wherein the water inlet pipeline is provided with a pre-composite filter element, a water inlet valve and a booster pump in sequence along the water inlet direction; the pure water pipeline is arranged along the water outlet direction A rear granular carbon filter element, a one-way valve and a high-pressure switch are arranged in sequence, and a waste water valve is arranged on the waste water pipeline; the reverse osmosis water purification system also includes a water outlet device, which is far away from the pure water pipeline The nozzles of the reverse osmosis filter element are connected. 10. A reverse osmosis water purifier, characterized in that it comprises the reverse osmosis water purification system according to claim 8 or 9.