WO2018036064A1

WO2018036064A1 - Spiral wound reverse osmosis membrane element, filter element and reverse osmosis water purifier

Info

Publication number: WO2018036064A1
Application number: PCT/CN2016/113101
Authority: WO
Inventors: 蔡雪刚; 桂鹏; 郑防震; 宋国栋
Original assignee: 佛山市顺德区美的饮水机制造有限公司
Priority date: 2016-08-26
Filing date: 2016-12-29
Publication date: 2018-03-01
Also published as: CN106110894B; CN106110894A

Abstract

A spiral wound reverse osmosis membrane element (700), filter element and reverse osmosis water purifier, the spiral wound reverse osmosis membrane element (700) comprising: a multi-leaf reverse osmosis membrane set (100), a center tube set (200), a first end cap (300) and a second end cap (400); the center tube set (200) comprises a pure water tube (210) and a plurality of waste water tubes (220) that are arranged in intervals to each other, and the plurality of waste water tubes (220) are arranged around the pure water tube (210); each reverse osmosis membrane set (100) has a first part located in the center tube set (200) and a second part located outside of the center tube set (200), and each of the waste water tubes (220) and the pure water tube (210) are separated by a first portion of a reverse osmosis membrane set (100); the second part of the plurality of reverse osmosis membrane sets (100) forms a multi-layer membrane assembly surrounding the center tube group (200); the first end cap (300) and the second end cap (400) are respectively sheathed on both ends of the center tube set (200) and the multi-leaf reverse osmosis membrane set (100); the center tube set (200) corresponding to the first end cap (300) or the second end cap (400) is provided with a pure water outlet (320) and a waste water outlet (310).

Description

螺旋卷式反渗透膜元件、滤芯和反渗透*** Spiral reel type reverse osmosis membrane element, filter element and reverse osmosis water purifier

技术领域Technical field

本发明涉及反渗透净水技术领域，特别涉及一种螺旋卷式反渗透膜元件、滤芯和反渗透***。The invention relates to the field of reverse osmosis water purification technology, in particular to a spiral wound reverse osmosis membrane element, a filter element and a reverse osmosis water purifier.

背景技术Background technique

螺旋卷式反渗透膜元件又称卷式反渗透膜元件，是水处理技术中的常用元件，它一般包括一根带有多个孔的中心管以及卷在中心管上的交替层叠的多层反渗选膜和导流网。中心管与壳体两端通过连接器连接。在使用时，原水从壳体一端进入壳体，在压力的作用下一部分经过反渗透膜的作用形成浓度较低的水，进入中心管之后从中心管一端或两端流出，这部分水可称作产水或纯水；另一部分从壳体另一端流出，可称作废水、浓水。 A spiral wound reverse osmosis membrane element, also known as a roll-type reverse osmosis membrane element, is a commonly used component in water treatment technology and generally comprises a central tube with a plurality of holes and an alternating stack of layers wound on the central tube. Reverse osmosis membrane and diversion network. The center tube and the two ends of the housing are connected by a connector. In use, the raw water enters the casing from one end of the casing, and a part of the water passes through the reverse osmosis membrane to form a lower concentration of water under the action of the pressure. After entering the central pipe, the water flows out from one end or both ends of the central pipe. Produce water or pure water; another part flows out from the other end of the shell, which can be called wastewater and concentrated water.

现有技术中的这种螺旋卷式反渗透膜元件，原水经处理之后，很大一部分作为废水排出，只有一小部分成为纯水，特别是大通量的螺旋卷式反渗透膜元件，纯水量在原水量中占的比例相对更小，原水回收率低，造成了原水的浪费。In the spiral rolled reverse osmosis membrane element of the prior art, after the raw water is treated, a large part is discharged as waste water, and only a small part becomes pure water, especially a large-flux spiral wound reverse osmosis membrane element, pure The proportion of water in the amount of raw water is relatively small, and the recovery rate of raw water is low, resulting in waste of raw water.

发明内容Summary of the invention

本发明的主要目的是提供一种螺旋卷式反渗透膜元件，旨在提高原水回收率，实现高节水。The main object of the present invention is to provide a spiral wound reverse osmosis membrane element which aims to improve the recovery rate of raw water and achieve high water saving.

为实现上述目的，本发明提出的螺旋卷式反渗透膜元件，包括中心管组、多页反渗透膜片组、第一端盖和第二端盖；所述中心管组包括纯水管以及多个相互间隔设置的废水管，多个所述废水管环绕所述纯水管排布，所述纯水管的周壁上开设有连通所述纯水管的内部通道的纯水入水孔，每一所述废水管的周壁上开设有连通所述废水管的内部通道的废水入水孔；每一个所述反渗透膜片组均具有位于所述中心管组内部的第一部分和位于所述中心管组外部的第二部分，每一所述废水管和所述纯水管被一个所述反渗透膜片组的第一部分隔开；多个所述反渗透膜片组的第二部分形成围绕在所述中心管组的周围的多层薄膜组件；所述第一端盖和第二端盖分别套设于所述中心管组和所述多页反渗透膜片组的两端，以对所述中心管组和所述反渗透膜片组进行定位；其中，所述第一端盖设有废水排出口和纯水排出口；或者，所述第一端盖设有废水排出口，所述第二端盖设有纯水排出口；所述废水管连通废水排出口设置，所述纯水管连通所述纯水排出口设置。In order to achieve the above object, a spiral wound reverse osmosis membrane element provided by the present invention comprises a central tube group, a multi-page reverse osmosis membrane group, 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, a plurality of the waste water pipes are arranged around the pure water pipe, and a peripheral wall of the pure water pipe is provided with a pure water inlet hole communicating with the internal passage of the pure water pipe, and each a peripheral wall of the waste water pipe is provided with a wastewater inlet hole communicating with an internal passage of the waste pipe; each of the reverse osmosis membrane groups has a first portion located inside the central pipe group and located at the central pipe a second portion external to the group, each of said waste water pipe and said pure water pipe being separated by a first portion of said reverse osmosis membrane group; a plurality of said second portion of said reverse osmosis membrane group being formed around a multilayer film assembly around the central tube set; the first end cover and the second end cover are respectively sleeved on the two ends of the central tube set and the multi-page reverse osmosis membrane group, Positioning the central tube set and the reverse osmosis membrane group; The first end cover is provided with a waste water discharge port and a pure water discharge port; or the first end cover is provided with a waste water discharge port, and the second end cover is provided with a pure water discharge port; The waste water discharge port is disposed, and the pure water pipe is connected to the pure water discharge port.

优选地，所述废水排出口和所述纯水排出口均设置于所述第一端盖上。Preferably, the waste water discharge port and the pure water discharge port are both disposed on the first end cover.

优选地，所述第一端盖的内侧涂覆有密封胶，所述第一端盖与所述反渗透膜片组之间通过密封胶粘合密封；和/或，所述第二端盖的内侧涂覆有密封胶，所述第二端盖与所述反渗透膜片组之间通过密封胶粘合密封。Preferably, the inner side of the first end cap is coated with a sealant, and the first end cap and the reverse osmosis membrane group are sealed by a sealant; and/or the second end cap The inner side is coated with a sealant, and the second end cap is sealed with the reverse osmosis membrane sheet by a sealant.

优选地，所述第一端盖的内侧对应所述废水管的位置和数量凸设有多个连通所述废水排出口的第一伸入管，所述第一伸入管伸入至对应的所述废水管中，并连通所述废水排出口和对应的所述废水管；所述第一端盖的内侧对应所述纯水管的位置凸设有连通所述纯水排出口的第二伸入管，所述第二伸入管伸入至所述纯水管中，并连通所述纯水排出口和所述纯水管。Preferably, the inner side of the first end cover has a plurality of first extending pipes communicating with the waste water discharge port corresponding to the position and the quantity of the waste water pipe, and the first extending pipe extends into the corresponding The waste water pipe is connected to the waste water discharge port and the corresponding waste water pipe; the inner side of the first end cover is convexly disposed at a position corresponding to the pure water pipe and is connected to the second water supply outlet Extending into the tube, the second extension tube extends into the pure water pipe and communicates with the pure water discharge port and the pure water pipe.

优选地，所述第二端盖的内侧对应所述废水管的位置和数量凸设有多个第一定位凸起，所述第一定位凸起伸入至对应的所述废水管中设置；所述第二端盖的内侧对应所述纯水管的位置凸设有第二定位凸起，所述第二定位凸起伸入至所述纯水管中设置。Preferably, a plurality of first positioning protrusions are protruded from the inner side of the second end cover corresponding to the position and the quantity of the waste water pipe, and the first positioning protrusions are protruded into the corresponding waste pipe; A second positioning protrusion is protruded from an inner side of the second end cover corresponding to the position of the pure water pipe, and the second positioning protrusion extends into the pure water pipe.

优选地，所述纯水管远离所述第一端盖的一端管口被封堵，以使得纯水向所述第一端盖的纯水排出口流动；所述废水管远离所述第一端盖的一端管口被封堵，以使得废水向所述第一端盖的废水排出口流动。Preferably, the pure water pipe is blocked away from one end of the first end cover, so that pure water flows to the pure water discharge port of the first end cover; the waste pipe is away from the first One end of the end cap is blocked to allow waste water to flow to the waste water discharge port of the first end cap.

优选地，每一个所述反渗透膜片组包括反渗透膜片、进水导流网以及纯水导流网；每一个所述反渗透膜片组的反渗透膜片正面向内对折设置，多个所述反渗透膜片组的第二部分叠合并共同沿周向缠绕所述中心管组；同一所述反渗透膜片正面夹层之间形成进水流道；相邻两个所述反渗透膜片的反面夹层之间形成产水流道；所述进水导流网和所述废水管位于进水流道中，所述纯水导流网位于产水流道中。Preferably, each of the reverse osmosis membranes comprises a reverse osmosis membrane, an influent diversion network, and a pure water diversion network; each of the reverse osmosis membranes has a reverse osmosis membrane disposed inwardly inwardly, a second portion of the plurality of the reverse osmosis membrane sheets is stacked and wound circumferentially around the central tube group; an inflow channel is formed between the front interlayer of the same reverse osmosis membrane; two adjacent reverse osmosis A water producing flow path is formed between the opposite sandwich layers of the diaphragm; the influent diversion net and the waste water pipe are located in the influent flow channel, and the pure water diversion net is located in the product water flow channel.

优选地，所述产水流道除靠近所述纯水管的侧边以外的其他侧边均闭合密封，以使得所述产水流道仅具有朝向所述纯水管的纯水出口。Preferably, the water producing flow passage is closedly sealed except for the side edges adjacent to the side of the pure water pipe, so that the water producing flow path has only a pure water outlet toward the pure water pipe.

优选地，所述废水管的数量为N个，N大于或等于3；所述纯水管的横截面呈N边形设置，并对应具有N个侧表面，每一所述侧表面上均设有所述纯水入水孔；每一个所述废水管对应一个所述侧表面的位置设置。Preferably, the number of the waste water pipes is N, and N is greater than or equal to 3; the cross section of the pure water pipe is N-shaped and correspondingly has N side surfaces, each of which is provided on the side surface The pure water is introduced into the water hole; each of the waste water pipes is disposed corresponding to a position of the side surface.

优选地，每一所述侧表面上均间隔设有多个所述纯水入水孔，且多个所述纯水入水孔沿所述纯水管的长度方向均匀排布，和/或，每一所述废水管上均间隔设有多个所述废水入水孔，且多个所述废水入水孔沿所述废水管的长度方向均匀排布。Preferably, each of the side surfaces is spaced apart from the plurality of pure water inlet holes, and the plurality of pure water inlet holes are evenly arranged along the length direction of the pure water pipe, and/or each A plurality of the wastewater inlet holes are disposed on the waste pipe, and a plurality of the wastewater inlet holes are evenly arranged along the longitudinal direction of the waste pipe.

优选地，所述纯水管的横截面呈圆形设置，所述纯水管的周壁沿其周向对应多个所述废水管划分为多个弧面段，每一所述弧面段上均设有所述纯水入水孔；每一所述废水管对应一个所述弧面段的位置设置。Preferably, the pure water pipe has a circular cross section, and the peripheral wall of the pure water pipe is divided into a plurality of arc surface segments corresponding to the plurality of the waste water pipes in a circumferential direction thereof, and each of the arc surface segments is The pure water inlet holes are respectively provided; each of the waste water pipes is disposed corresponding to a position of one of the curved surface segments.

优选地，每一所述弧面段上均间隔设有多个所述纯水入水孔，且多个所述纯水入水孔沿所述纯水管的长度方向均匀排布，和/或，每一所述废水管上均间隔设有多个所述废水入水孔，且多个所述废水入水孔沿所述废水管的长度方向均匀排布。Preferably, each of the curved surface segments is spaced apart from the plurality of pure water inlet holes, and the plurality of pure water inlet holes are evenly arranged along the length direction of the pure water pipe, and/or A plurality of the waste water inlet holes are disposed on each of the waste water pipes, and a plurality of the waste water inlet holes are evenly arranged along a longitudinal direction of the waste water pipe.

优选地，所述废水管的周壁上开设有废水导流槽，所述废水入水孔设于所述废水导流槽内。Preferably, a waste water guiding groove is defined in a peripheral wall of the waste water pipe, and the wastewater inlet water hole is disposed in the waste water guiding groove.

优选地，所述纯水管的周壁上开设有沿所述纯水管长度方向延伸的第一让位开口。Preferably, the peripheral wall of the pure water pipe is provided with a first letting opening extending along the length of the pure water pipe.

优选地，所述第一让位开口内设有第一加强筋，所述第一加强筋的两端分别连接所述第一让位开口的不同的两条边。Preferably, a first reinforcing rib is disposed in the first retaining opening, and two ends of the first reinforcing rib are respectively connected to different two sides of the first letting opening.

优选地，所述废水管的周壁上开设有沿所述废水管长度方向延伸的第二让位开口。Preferably, the peripheral wall of the waste pipe is provided with a second yielding opening extending along the length of the waste pipe.

优选地，所述第二让位开口内设有第二加强筋，所述第二加强筋的两端分别连接所述第二让位开口的不同的两条边。Preferably, a second reinforcing rib is disposed in the second retaining opening, and two ends of the second reinforcing rib are respectively connected to different two sides of the second retaining opening.

优选地，所述纯水管和多个所述废水管共同组合形成圆柱体形。Preferably, the pure water pipe and the plurality of waste water pipes are combined to form a cylindrical shape.

本发明还提出一种滤芯，该滤芯包括壳体、水路转换器和螺旋卷式反渗透膜元件，该螺旋卷式反渗透膜元件包括中心管组、多页反渗透膜片组、第一端盖和第二端盖；所述中心管组包括纯水管以及多个相互间隔设置的废水管，多个所述废水管环绕所述纯水管排布，所述纯水管的周壁上开设有连通所述纯水管的内部通道的纯水入水孔，每一所述废水管的周壁上开设有连通所述废水管的内部通道的废水入水孔；每一个所述反渗透膜片组均具有位于所述中心管组内部的第一部分和位于所述中心管组外部的第二部分，每一所述废水管和所述纯水管被一个所述反渗透膜片组的第一部分隔开；多个所述反渗透膜片组的第二部分形成围绕在所述中心管组的周围的多层薄膜组件；所述第一端盖和第二端盖分别套设于所述中心管组和所述多页反渗透膜片组的两端，以对所述中心管组和所述反渗透膜片组进行定位；其中，所述第一端盖设有废水排出口和纯水排出口；或者，所述第一端盖设有废水排出口，所述第二端盖设有纯水排出口；所述废水管连通废水排出口设置，所述纯水管连通所述纯水排出口设置。The invention also provides a filter cartridge comprising a casing, a waterway converter and a spiral wound reverse osmosis membrane element, the spiral wound reverse osmosis membrane element comprising a central tube group, a multi-page reverse osmosis membrane group, and a first end a cover and a second end cover; the central tube set includes a pure water pipe and a plurality of waste water pipes arranged at a distance, and the plurality of waste water pipes are arranged around the pure water pipe, and the peripheral wall of the pure water pipe is opened a pure water inlet hole communicating with the internal passage of the pure water pipe, and a peripheral wall of each of the waste water pipes is provided with a waste water inlet hole communicating with an internal passage of the waste pipe; each of the reverse osmosis membrane groups is Having a first portion located inside the central tube group and a second portion located outside the center tube group, each of the waste water tube and the pure water tube being separated by a first portion of one of the reverse osmosis membrane groups a plurality of the second portion of the reverse osmosis membrane group forming a multilayer film assembly surrounding the central tube set; the first end cover and the second end cover are respectively sleeved on the central tube set And at both ends of the multi-page reverse osmosis membrane group, Positioning the central tube set and the reverse osmosis membrane group; wherein the first end cover is provided with a waste water discharge port and a pure water discharge port; or 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 waste water pipe is connected to the waste water discharge port, and the pure water pipe is connected to the pure water discharge port.

本发明还提出一种反渗透***，该反渗透***包括滤芯；该滤芯包括壳体、水路转换器和螺旋卷式反渗透膜元件，该螺旋卷式反渗透膜元件包括中心管组、多页反渗透膜片组、第一端盖和第二端盖；所述中心管组包括纯水管以及多个相互间隔设置的废水管，多个所述废水管环绕所述纯水管排布，所述纯水管的周壁上开设有连通所述纯水管的内部通道的纯水入水孔，每一所述废水管的周壁上开设有连通所述废水管的内部通道的废水入水孔；每一个所述反渗透膜片组均具有位于所述中心管组内部的第一部分和位于所述中心管组外部的第二部分，每一所述废水管和所述纯水管被一个所述反渗透膜片组的第一部分隔开；多个所述反渗透膜片组的第二部分形成围绕在所述中心管组的周围的多层薄膜组件；所述第一端盖和第二端盖分别套设于所述中心管组和所述多页反渗透膜片组的两端，以对所述中心管组和所述反渗透膜片组进行定位；其中，所述第一端盖设有废水排出口和纯水排出口；或者，所述第一端盖设有废水排出口，所述第二端盖设有纯水排出口；所述废水管连通废水排出口设置，所述纯水管连通所述纯水排出口设置。The invention also provides a reverse osmosis water purifier comprising a filter element; the filter element comprises a casing, a water path converter and a spiral wound reverse osmosis membrane element, the spiral wound reverse osmosis membrane element comprising a central tube a group, a multi-page reverse osmosis membrane group, a first end cap and a second end cap; the central tube set comprises a pure water pipe and a plurality of waste water pipes arranged at a distance, and the plurality of waste water pipes surround the pure water a pipe arrangement, the peripheral wall of the pure water pipe is provided with a pure water inlet hole communicating with the internal passage of the pure water pipe, and the peripheral wall of each of the waste pipe is provided with a waste water connecting the internal passage of the waste pipe a water inlet hole; each of the reverse osmosis membrane groups has a first portion located inside the central tube group and a second portion located outside the center tube group, each of the waste water tube and the pure water tube being a first portion of the reverse osmosis membrane group is spaced apart; a plurality of the second portion of the reverse osmosis membrane group forming a multilayer film assembly surrounding the central tube set; the first end cap and The second end caps are respectively sleeved on the central tube set The two ends of the multi-page reverse osmosis membrane group are positioned to position the central tube group and the reverse osmosis membrane group; wherein the first end cover is provided with a waste water discharge port and a pure water discharge port; Or 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 waste water pipe is connected to the waste water discharge port, and the pure water pipe is connected to the pure water discharge port. .

本发明技术方案的螺旋卷式反渗透膜元件的中心管组包括纯水管和多个环绕纯水管的废水管；螺旋卷式反渗透膜元件的每一废水管对应一页反渗透膜片组，从而可以实现多膜页卷取，可以增加流道数量，有利于提高原水通量，并解决膜片过长渗透压不足导致部分膜片并未达到过滤目的的问题，通过第一端盖和第二端盖分别夹紧中心管组和反渗透膜片组的两端以进行定位，同时在第一端盖上设置纯水排出口和废水排出口，形成与中心管组对应管路连通的流道；在第一端盖和第二端盖密封该些反渗透膜片组两端后，由于该中心管组被多页反渗透膜片组卷绕在中心位置，可以形成多页反渗透膜片组外侧边侧流进水，中间废水管排出废水的原水水路；本发明的螺旋卷式反渗透膜元件，原水通过侧流进水，流道变窄，进水面积减小，还可以采用低厚度的进水导流网，继续减少进水面积，而流程也大大增长，因此可以增加原水与反渗透膜片接触的时间，提高原水回收率；同时，因为减小了原水进水面积，可以加大反渗透膜片表面水流速度，因而能够减小反渗透膜表面浓差极化，降低该螺旋卷式反渗透膜元件的污染速度，有利于提高原水回收率，从而改善原水的浪费问题，实现高节水。The central tube set of the spiral wound reverse osmosis membrane element of the technical solution of the present invention comprises a pure water pipe and a plurality of waste water pipes surrounding the pure water pipe; each of the waste water pipes of the spiral wound reverse osmosis membrane element corresponds to a reverse osmosis membrane Group, which can realize multi-film sheet winding, can increase the number of flow channels, is beneficial to increase the raw water flux, and solve the problem that the diaphragm is too long and the osmotic pressure is insufficient, so that some of the diaphragms do not achieve the filtering purpose, through the first end cover And the second end cover respectively clamps the two ends of the central tube group and the reverse osmosis membrane group for positioning, and at the same time, a pure water discharge port and a waste water discharge port are arranged on the first end cover to form a communication line with the corresponding pipeline of the central pipe group; After the first end cover and the second end cover seal the two ends of the reverse osmosis membrane group, since the central tube group is wound around the center position by the multi-page reverse osmosis membrane group, a multi-page reverse can be formed The raw water channel in which the outer side of the permeable membrane group flows into the water and the intermediate waste water discharges the waste water; the spiral wound reverse osmosis membrane element of the present invention, the raw water flows into the water through the side stream, the flow passage is narrowed, and the water inlet area is reduced. Low thickness water can also be used The flow net continues to reduce the inflow area, and the flow is greatly increased. Therefore, the contact time between the raw water and the reverse osmosis membrane can be increased, and the recovery rate of the raw water can be increased. Meanwhile, the reverse osmosis membrane can be enlarged because the original water inlet area is reduced. The surface water flow velocity of the sheet can reduce the concentration polarization of the reverse osmosis membrane surface, reduce the pollution speed of the spiral wound reverse osmosis membrane element, and improve the recovery rate of the raw water, thereby improving the waste of raw water and achieving high water saving.

附图说明DRAWINGS

图1为本发明螺旋卷式反渗透膜元件一实施例的结构示意图；1 is a schematic structural view of an embodiment of a spiral wound reverse osmosis membrane element of the present invention;

图2为沿图1中A-B-C-D的剖面图；Figure 2 is a cross-sectional view taken along line A-B-C-D of Figure 1;

图3为图2中E处的放大图；Figure 3 is an enlarged view of E in Figure 2;

图4为图2中F处的放大图；Figure 4 is an enlarged view of the portion F in Figure 2;

图5为图1所示螺旋卷式反渗透膜元件的第一端盖的结构示意图；Figure 5 is a schematic view showing the structure of the first end cover of the spiral wound reverse osmosis membrane element shown in Figure 1;

图6为图1所示螺旋卷式反渗透膜元件的反渗透膜片组和中心管组的卷膜示意图；Figure 6 is a schematic view showing the winding film of the reverse osmosis membrane group and the central tube group of the spiral wound reverse osmosis membrane element shown in Figure 1;

图7为图1所示螺旋卷式反渗透膜元件的一页反渗透膜片组与一个废水管和一个纯水管配合的俯视图；Figure 7 is a plan view of a reverse osmosis membrane group of the spiral wound reverse osmosis membrane element shown in Figure 1 in cooperation with a waste water pipe and a pure water pipe;

图8为图1所示螺旋卷式反渗透膜元件的中心管组的结构示意图；Figure 8 is a schematic structural view of a central tube set of the spiral wound reverse osmosis membrane element shown in Figure 1;

图9为图8所示中心管组的俯视图；Figure 9 is a plan view of the central tube set of Figure 8;

图10为图1所示螺旋卷式反渗透膜元件的纯水管的结构示意图；Figure 10 is a schematic view showing the structure of a pure water pipe of the spiral wound reverse osmosis membrane element shown in Figure 1;

图11为图1所示螺旋卷式反渗透膜元件的废水管的结构示意图；Figure 11 is a schematic structural view of a waste water pipe of the spiral wound reverse osmosis membrane element shown in Figure 1;

图12为本发明螺旋卷式反渗透膜元件另一实施例的中心管组俯视图；Figure 12 is a plan view showing a central tube set of another embodiment of the spiral wound reverse osmosis membrane element of the present invention;

图13为本发明滤芯的分解结构示意图。Figure 13 is a schematic exploded view of the filter element of the present invention.

附图标号说明：Description of the reference numerals:

标号Label	名称name	标号Label	名称name
100100	反渗透膜片组Reverse osmosis membrane group	110110	反渗透膜片Reverse osmosis membrane
120120	进水导流网Influent diversion network	130130	纯水导流网Pure water diversion network
200200	中心管组Central tube group	210或210’210 or 210’	纯水管Pure water pipe
220或220’220 or 220’	废水管Waste water pipe	211211	纯水入水孔Pure water into the water hole
221221	废水入水孔Waste water into the water hole	212212	侧表面Side surface
213213	弧面段Curved section	214214	第一让位开口First yielding opening
215215	第一加强筋First stiffener	222222	废水导流槽Wastewater drainage channel
223223	第二让位开口Second yielding opening	224224	第二加强筋Second stiffener
300300	第一端盖First end cap	400400	第二端盖Second end cap
310310	废水排出口Wastewater discharge	320320	纯水排出口Pure water discharge
311311	第一伸入管First extension tube	321321	第二伸入管Second extension tube
401401	第一定位凸起First positioning projection	402402	第二定位凸起Second positioning projection
700700	螺旋卷式反渗透膜元件Spiral wound reverse osmosis membrane element	800800	水路转换器Waterway converter
900900	壳体case

本发明目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。The implementation, functional features, and advantages of the present invention will be further described in conjunction with the embodiments.

具体实施方式detailed description

下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

需要说明，若本发明实施例中有涉及方向性指示（诸如上、下、左、右、前、后……），则该方向性指示仅用于解释在某一特定姿态（如附图所示）下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。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 invention, the directional indication is only used to explain in a certain posture (as shown in the drawing) The relative positional relationship between the components, the motion situation, and the like, if the specific posture changes, the directional indication also changes accordingly.

另外，若本发明实施例中有涉及“第一”、“第二”等的描述，则该“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本发明要求的保护范围之内。In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of the "first", "second", etc. is used for the purpose of description only, and is not to be construed as an Its relative importance or implicit indication of the number of technical features indicated. Thus, features defining "first" or "second" may include at least one of the features, either explicitly or implicitly. In addition, the technical solutions between the various embodiments may be combined with each other, but must be based on the realization of those skilled in the art, and when the combination of the technical solutions is contradictory or impossible to implement, it should be considered that the combination of the technical solutions does not exist. It is also within the scope of protection required by the present invention.

本发明提出一种螺旋卷式反渗透膜元件。The invention provides a spiral wound reverse osmosis membrane element.

请参阅图1和图2，其中，带箭头的实线指示的是面或者孔、口等空间；在本发明实施例中，该螺旋卷式反渗透膜元件700包括：多页反渗透膜片组100、中心管组200、第一端盖300和第二端盖400，所述中心管组200包括纯水管210以及多个相互间隔设置的废水管220，多个所述废水管220环绕所述纯水管210排布，所述纯水管210的周壁上开设有连通所述纯水管210的内部通道的纯水入水孔211，每一所述废水管220的周壁上开设有连通所述废水管220的内部通道的废水入水孔221；每一个所述反渗透膜片组100均具有位于所述中心管组200内部的第一部分和位于所述中心管组200外部的第二部分，每一所述废水管220和所述纯水管210被一个所述反渗透膜片组100的第一部分隔开；多个所述反渗透膜片组100的第二部分形成围绕在所述中心管组200的周围的多层薄膜组件；所述第一端盖300和第二端盖400分别套设于所述中心管组200和所述多页反渗透膜片组100的两端，以对所述中心管组200和所述反渗透膜片100组进行定位；所述第一端盖300设有废水排出口310和纯水排出口320（请参阅图1和图2）；或者，所述第一端盖300设有废水排出口，所述第二端盖400设有纯水排出口（此种设置方式未示出）；所述废水管220连通废水排出口310设置，所述纯水管210连通所述纯水排出口320设置。Referring to FIG. 1 and FIG. 2, the solid line with an arrow indicates a space such as a face or a hole, a mouth, etc. In the embodiment of the present invention, the spiral roll reverse osmosis membrane element 700 includes: a multi-page reverse osmosis membrane The group 100, the central tube set 200, the first end cap 300 and the second end cap 400, the central tube set 200 includes a pure water pipe 210 and a plurality of waste water pipes 220 spaced apart from each other, and the plurality of waste water pipes 220 surround The pure water pipe 210 is arranged, and the peripheral wall of the pure water pipe 210 is provided with a pure water inlet hole 211 communicating with the internal passage of the pure water pipe 210, and the peripheral wall of each of the waste water pipes 220 is opened for communication. The wastewater of the internal passage of the waste water pipe 220 is introduced into the water hole 221; each of the reverse osmosis membrane groups 100 has a first portion located inside the center tube group 200 and a second portion located outside the center tube group 200 Each of the waste water pipe 220 and the pure water pipe 210 is separated by a first portion of the reverse osmosis membrane group 100; a plurality of the second portion of the reverse osmosis membrane group 100 is formed around the a multilayer film assembly around the central tube set 200; the first end cap 300 and the The end caps 400 are respectively sleeved on the two ends of the central tube set 200 and the multi-page reverse osmosis membrane group 100 to position the central tube set 200 and the reverse osmosis membrane 100 group; The first end cover 300 is provided with a waste water discharge port 310 and a pure water discharge port 320 (please refer to FIG. 1 and FIG. 2); or the first end cover 300 is provided with a waste water discharge port, and the second end cover 400 is provided. There is a pure water discharge port (not shown in this way); the waste water pipe 220 is connected to the waste water discharge port 310, and the pure water pipe 210 is connected to the pure water discharge port 320.

本发明技术方案的螺旋卷式反渗透膜元件700的中心管组200包括纯水管210和多个环绕纯水管210的废水管220；螺旋卷式反渗透膜元件700的每一废水管220对应一页反渗透膜片组100，从而可以实现多膜页卷取，可以增加流道数量，有利于提高原水通量，并解决反渗透膜片110过长渗透压力不足导致部分反渗透膜片110并未达到过滤目的的问题；通过第一端盖300和第二端盖400分别夹紧中心管组200和反渗透膜片组100的两端以进行定位，同时在第一端盖300上设置纯水排出口320和废水排出口310，形成与中心管组200对应管路连通的流道；在第一端盖300和第二端盖400密封该些反渗透膜片组100两端后，由于该中心管组200被多页反渗透膜片组100卷绕在中心位置，可以形成多页反渗透膜片组100外侧边侧流进水，中间废水管220排出废水的原水水路；本发明的螺旋卷式反渗透膜元件700使用时，原水通过侧流进水，流道变窄，进水面积减小，还可以采用低厚度的进水导流网120，继续减少进水面积，而流程也大大增长，因此可以增加原水与反渗透膜片110接触的时间，提高原水回收率；同时，因为减小了原水进水面积，可以加大反渗透膜片110表面水流速度（在进水通量一定时，进水通量Q与水流速度V之间的关系是V=Q/S；其中，S为进水面积，具体的，S=Ld；L为进水端膜片长度，d为截面厚度，侧流主要是减小了L，另外用小的进水导流网120自然减小了厚度d），因而能够减小反渗透膜片110表面浓差极化，降低该螺旋卷式反渗透膜元件700的污染速度，有利于提高原水回收率，从而改善原水的浪费问题，实现高节水。The central tube set 200 of the spiral wound reverse osmosis membrane element 700 of the technical solution of the present invention comprises a pure water pipe 210 and a plurality of waste water pipes 220 surrounding the pure water pipe 210; each waste water pipe 220 of the spiral wound reverse osmosis membrane element 700 Corresponding to one page of reverse osmosis membrane group 100, multi-film sheet winding can be realized, the number of flow channels can be increased, the raw water flux can be improved, and the reverse osmosis membrane 110 can be solved for excessive reverse osmosis pressure, resulting in partial reverse osmosis membrane. 110 does not achieve the problem of filtering purposes; the first end cap 300 and the second end cap 400 respectively clamp the ends of the central tube set 200 and the reverse osmosis membrane group 100 for positioning while being on the first end cap 300 The pure water discharge port 320 and the waste water discharge port 310 are disposed to form a flow path communicating with the corresponding pipeline of the central pipe group 200; after the first end cover 300 and the second end cover 400 seal the ends of the reverse osmosis membrane group 100 Since the central tube set 200 is wound around the center position by the multi-page reverse osmosis membrane group 100, the outer side water flowing into the multi-page reverse osmosis membrane group 100 can be formed, and the intermediate waste water pipe 220 discharges the raw water water path of the wastewater; The spiral wound reverse osmosis membrane element 700 of the present invention When used, the raw water enters the water through the side stream, the flow channel is narrowed, the water inlet area is reduced, and the low-inflow water guiding net 120 can be used to continue to reduce the water inlet area, and the flow is also greatly increased, so that the raw water can be increased. The contact time of the reverse osmosis membrane 110 increases the recovery rate of the raw water; meanwhile, since the water inlet area of the raw water is reduced, the surface water velocity of the reverse osmosis membrane 110 can be increased (the influent flux Q when the influent flux is constant) The relationship with the water flow velocity V is V=Q/S; where S is the inlet water area, specifically, S=Ld; L is the length of the inlet end diaphragm, d is the section thickness, and the side stream is mainly reduced. L, in addition, the small inflow water guiding net 120 naturally reduces the thickness d), thereby reducing the concentration polarization of the surface of the reverse osmosis membrane 110 and reducing the contamination speed of the spiral wound reverse osmosis membrane element 700. It is beneficial to improve the recovery rate of raw water, thereby improving the waste of raw water and achieving high water saving.

请参阅图2、图10和图11，该中心管组200中，所述纯水管210的周壁上开设有连通所述纯水管210的内部通道的纯水入水孔211；每一所述废水管220的周壁上开设有连通所述废水管220的内部通道的废水入水孔221。纯水和废水分别通过纯水入水孔211和废水入水孔221进入相应的通道中。其中，废水管220的具体数量决定了反渗透膜片组100的页数，也决定了纯水管210的尺寸，具体的，一页反渗透膜片组100对应一个废水管220设置，废水管220越多则反渗透膜片组100的页数越多，对应的螺旋卷式反渗透膜元件700的通量也越大，而纯水管210的尺寸也相应越大。废水管220的具体数量、形状以及对应纯水管210的形状可以参照本发明的具体实施例，并根据实际情况设置。Referring to FIG. 2, FIG. 10 and FIG. 11, in the central tube set 200, a pure water inlet hole 211 is formed in the peripheral wall of the pure water pipe 210 to communicate with the internal passage of the pure water pipe 210; A waste water inlet hole 221 that communicates with the internal passage of the waste water pipe 220 is opened on the peripheral wall of the waste water pipe 220. The pure water and the wastewater enter the corresponding passage through the pure water inlet hole 211 and the waste water inlet hole 221, respectively. The specific quantity of the waste water pipe 220 determines the number of pages of the reverse osmosis membrane group 100, and also determines the size of the pure water pipe 210. Specifically, one page of the reverse osmosis membrane group 100 corresponds to one waste water pipe 220, and the waste water pipe The more the 220, the more the number of pages of the reverse osmosis membrane group 100, the larger the flux of the corresponding spiral wound reverse osmosis membrane element 700, and the larger the size of the pure water pipe 210. The specific number and shape of the waste water pipe 220 and the shape of the corresponding pure water pipe 210 can be referred to the specific embodiment of the present invention and set according to actual conditions.

废水排出口310和纯水排出口320可以设置在同一端盖（第一端盖300或第二端盖400）上，也可以分别设置在不同的端盖上，都能起到导出废水和纯水的目的，在本实施例中，请参阅图1、图2和图5，优选地，所述废水排出口310和所述纯水排出口320均设置于所述第一端盖300上。此时废水排出口310和纯水排出口320都设置在同一侧，在对应的滤芯进行水路设计时，仅需要对应第一端盖300设置一个水路转换器800即可，因而有利于简化对应的滤芯的结构。The waste water discharge port 310 and the pure water discharge port 320 may be disposed on the same end cover (the first end cover 300 or the second end cover 400), or may be respectively disposed on different end covers, and both can be used to discharge waste water and pure For the purpose of water, in the present embodiment, referring to FIG. 1, FIG. 2 and FIG. 5, preferably, the waste water discharge port 310 and the pure water discharge port 320 are disposed on the first end cover 300. At this time, the wastewater discharge port 310 and the pure water discharge port 320 are both disposed on the same side. When the corresponding filter element is designed for the water path, only one water path converter 800 needs to be disposed corresponding to the first end cover 300, thereby facilitating the simplification of the corresponding The structure of the filter element.

为了使得第一端盖300和第二端盖400的固定更可靠，在本实施例中，可以设置，所述第一端盖300的内侧涂覆有密封胶，所述第一端盖300与所述反渗透膜片组100之间通过密封胶粘合密封，类比第一端盖300的设置情况；在本实施例中，所述第二端盖400的内侧均的内侧涂覆有密封胶，所述第二端盖400与所述反渗透膜片组100之间通过密封胶粘合密封，粘合后，第一端盖300、第二端盖400不容易脱落，安装可靠性大大提高，同时，密封胶对反渗透膜片组100的两端进行密封，阻挡水朝第一端盖300或第二端盖400流动，从而实现一侧进水中间出水的水路。In order to make the fixing of the first end cover 300 and the second end cover 400 more reliable, in this embodiment, it may be provided that the inner side of the first end cover 300 is coated with a sealant, and the first end cover 300 is The reverse osmosis membrane group 100 is sealed by a sealant, similar to the arrangement of the first end cover 300; in the embodiment, the inner side of the second end cover 400 is coated with a sealant. The second end cover 400 and the reverse osmosis membrane group 100 are sealed and sealed by a sealant. After bonding, the first end cover 300 and the second end cover 400 are not easily detached, and the installation reliability is greatly improved. At the same time, the sealant seals both ends of the reverse osmosis membrane group 100, and blocks the water from flowing toward the first end cap 300 or the second end cap 400, thereby realizing the water path of the water flowing out in the middle of one side.

请参阅图3和图5，为了实现废水管220与废水出水口310的对接，所述第一端盖300的内侧对应所述废水管220的位置和数量凸设有多个连通所述废水排出口310的第一伸入管311，所述第一伸入管311伸入对应所述废水管220中以连通所述废水排出口310和所述废水管220；具体的，第一伸入管311的一端伸入废水管220中与废水管220连通，第一伸入管311的另一端连通废水排出口310，可靠的实现了水路的连通，同时第一伸入管311还具有定位功能，能够辅助第一端盖300与中心管组200的对准，提高螺旋卷式反渗透膜元件700的结构紧凑性和可靠性。为了实现纯水管210与纯水排出口320的对接，所述第一端盖300的内侧对应所述纯水管210的位置凸设有连通所述纯水排出口320的第二伸入管321，所述第二伸入管321伸入所述纯水管210中以连通所述纯水排出口320和所述纯水管210。第二伸入管321的作用和效果可以类比第一伸入管311，在此不再赘述。Referring to FIG. 3 and FIG. 5, in order to realize the docking of the waste water pipe 220 and the waste water outlet 310, the inner side of the first end cover 300 has a plurality of communicating with the waste water discharge corresponding to the position and the quantity of the waste water pipe 220. a first extending tube 311 of the outlet 310, the first extending tube 311 extending into the corresponding waste water pipe 220 to communicate the waste water discharge port 310 and the waste water pipe 220; specifically, the first extending pipe One end of the 311 extends into the waste water pipe 220 to communicate with the waste water pipe 220, and the other end of the first extended pipe 311 communicates with the waste water discharge port 310, thereby reliably achieving the connection of the waterway, and the first extending pipe 311 also has a positioning function. The alignment of the first end cap 300 with the central tube set 200 can be assisted to improve the structural compactness and reliability of the spiral wound reverse osmosis membrane element 700. In order to achieve the abutment between the pure water pipe 210 and the pure water discharge port 320, the inner side of the first end cover 300 is convexly disposed at a position corresponding to the pure water pipe 210 to be connected to the second water inlet pipe 320. The second extension pipe 321 extends into the pure water pipe 210 to communicate the pure water discharge port 320 and the pure water pipe 210. The action and effect of the second extension tube 321 can be analogized to the first extension tube 311, and will not be described herein.

为了方便第二端盖400安装；请参阅图4，在本实施例中，所述第二端盖400的内侧对应所述废水管220的位置和数量凸设有多个第一定位凸起401，所述第一定位凸起401伸入对应所述废水管220中；所述第二端盖400的内侧对应所述纯水管210的位置凸设有第二定位凸起402，所述第二定位凸起402伸入所述纯水管210中。通过第一定位凸起401与废水管220配合、第二定位凸起402与纯水管210配合，能够简化第二端盖400的对准操作，同时中心管组200与第二端盖400通过第一定位凸起401和第二定位凸起402连接，可以进一步提高整个螺旋卷式反渗透膜元件700的结构紧凑性和可靠性。In order to facilitate the installation of the second end cover 400, please refer to FIG. 4. In the embodiment, a plurality of first positioning protrusions 401 are protruded from the inner side of the second end cover 400 corresponding to the position and the quantity of the waste water pipe 220. The first positioning protrusion 401 extends into the corresponding waste pipe 220; the inner side of the second end cover 400 is convexly disposed with a second positioning protrusion 402 corresponding to the position of the pure water pipe 210. Two positioning projections 402 extend into the pure water pipe 210. The first positioning protrusion 401 is engaged with the waste water pipe 220, and the second positioning protrusion 402 is engaged with the pure water pipe 210, so that the alignment operation of the second end cover 400 can be simplified, and the central tube set 200 and the second end cover 400 pass. The first positioning protrusion 401 and the second positioning protrusion 402 are connected to further improve the structural compactness and reliability of the entire spiral wound reverse osmosis membrane element 700.

在有需要时，第二端盖400也可以类比第一端盖300设计对应的出水口，从而在第二端盖400处也形成纯水流路或/和废水流路。请进一步参阅图2，在本实施例中，为了简化水路，第二端盖400并没有设置出水口，第二端盖400与中心管组密封配合时，纯水管210内的纯水和废水管220中废水不会朝第二端盖400流动以排出，但是当第二端盖400与中心管200之间的密封效果不佳时，纯水和废水还是有可能向第二端盖400流动以排出到滤芯的壳体中，从而影响净化效率；为了避免这种情况，在本实施例中，所述纯水管210的远离所述第一端盖300的一端管口被封堵，以使得纯水向所述第一端盖300的纯水排出口320流动；所述废水管220的远离所述第一端盖300的一端管口被封堵，以使得废水向所述第一端盖300流动。请参阅图2，此时，纯水流动方向一定，能够可靠的收集纯水，封堵后，废水流动方向一定，能够可靠的收集废水。在实际使用时，螺旋卷式反渗透膜元件700一般是竖直放置的，此时，对应的所述纯水管210和多个所述废水管220也沿竖直方向摆放，第一端盖300在上方，第二端盖400在下方，设置所述纯水管210的下端口被封堵，多个所述废水管220的下端口均被封堵，从上端收集纯水和废水，水流均匀，且便于管路的设计。The second end cap 400 can also be designed to correspond to the water outlet of the first end cap 300 when needed, so that a pure water flow path or/and a waste water flow path is also formed at the second end cover 400. Please refer to FIG. 2 . In this embodiment, in order to simplify the water path, the second end cover 400 is not provided with a water outlet, and the pure water and the waste water in the pure water pipe 210 are sealed when the second end cover 400 is sealed with the central pipe set. The waste water in the tube 220 does not flow toward the second end cap 400 to be discharged, but when the sealing effect between the second end cap 400 and the center tube 200 is not good, pure water and waste water may flow to the second end cap 400. In order to avoid this, in the present embodiment, the end of the pure water pipe 210 away from the first end cover 300 is blocked. Pure water is caused to flow to the pure water discharge port 320 of the first end cap 300; the end of the waste water pipe 220 remote from the first end cover 300 is blocked, so that the waste water is directed to the first end The cover 300 flows. Please refer to Figure 2. At this time, the pure water flows in a certain direction, and the pure water can be collected reliably. After the plugging, the flow direction of the wastewater is constant, and the wastewater can be collected reliably. In actual use, the spiral wound reverse osmosis membrane element 700 is generally placed vertically, in which case the corresponding pure water pipe 210 and the plurality of the waste water pipes 220 are also placed in a vertical direction, the first end The cover 300 is above, the second end cover 400 is below, the lower port of the pure water pipe 210 is blocked, and the lower ports of the plurality of waste pipes 220 are blocked, and pure water and waste water are collected from the upper end. The water flow is uniform and the piping design is convenient.

请参阅图6和图7，每一个所述反渗透膜片组包括反渗透膜片110、进水导流网120以及纯水导流网130；进水导流网120和纯水导流网130分别设置在所述反渗透膜片110的正反两面，原水在反渗透膜片110的正面流动，并在渗透压力的作用下，从反渗透膜片110的正面向反渗透膜片110的反面渗透纯水，纯水产生在反渗透膜片110的反面并在纯水导流网130的导流作用下向纯水管210流动。其中，反渗透膜片110可以通过对折使得正面与正面邻接，反面与反面邻接，避免不必要的接触，从而防止纯水被污染；实际操作时，反渗透膜片110的对折时可以是正面向内对折也可以是反面向内对折，根据实际情况进行合理选取即可。请进一步参阅图7，在本实施例中，每一个所述反渗透膜片组100的反渗透膜片110正面向内对折设置，多个所述反渗透膜片组100的第二部分叠合并共同沿周向缠绕所述中心管组200；同一所述反渗透膜片110正面夹层之间形成进水流道；相邻两个所述反渗透膜片110的反面夹层之间形成产水流道；所述进水导流网120和所述废水管220位于进水流道中，所述纯水导流网130位于产水流道中。此时，进水流道与产水流道之间相互独立，并彻底隔离，能够有效的保证每一个所述反渗透膜片组100的进水导流网120不与所述纯水管210和其他的所述反渗透膜片组100的反渗透膜片110的反面接触；每一个所述反渗透膜片组100的纯水导流网130不与所述废水管220和其他的所述反渗透膜片组100的反渗透膜片110的正面接触；原水只在进水流道中流动最后由废水管220排出，纯水只在产水流道中流动最后由纯水管210排出，从而避免纯水污染，保证净化效果。Referring to FIG. 6 and FIG. 7, each of the reverse osmosis membrane groups includes a reverse osmosis membrane 110, an influent diversion network 120, and a pure water diversion network 130; an influent diversion network 120 and a pure water diversion network. 130 are respectively disposed on the front and back sides of the reverse osmosis membrane 110, the raw water flows on the front surface of the reverse osmosis membrane 110, and under the action of the osmotic pressure, from the front surface of the reverse osmosis membrane 110 to the reverse osmosis membrane 110 The reverse side penetrates the pure water, and the pure water is generated on the reverse side of the reverse osmosis membrane 110 and flows to the pure water pipe 210 under the diversion of the pure water flow guiding net 130. Wherein, the reverse osmosis membrane 110 can be adjacent to the front surface by folding in the opposite direction, and the reverse surface and the reverse surface are adjacent to each other to avoid unnecessary contact, thereby preventing the pure water from being contaminated; in actual operation, the reverse osmosis membrane 110 can be folded in frontally and inwardly. The fold can also be reversed inwardly and folded in half, and can be reasonably selected according to the actual situation. Please refer to FIG. 7. In this embodiment, the reverse osmosis membrane 110 of each of the reverse osmosis membrane groups 100 is folded inwardly in the front direction, and the second partial fusion of the plurality of the reverse osmosis membrane groups 100 is combined. The central tube group 200 is wound together in a circumferential direction; an inflow channel is formed between the front interlayers of the reverse osmosis membrane 110; and a water production channel is formed between the opposite sandwich layers of the two adjacent reverse osmosis membranes 110; The influent diversion network 120 and the waste water pipe 220 are located in an influent flow channel, and the pure water diversion net 130 is located in a product water flow channel. At this time, the inlet flow passage and the production water flow passage are independent from each other and completely isolated, and can effectively ensure that the inlet water guiding net 120 of each of the reverse osmosis membrane groups 100 is not associated with the pure water pipe 210 and the like. The reverse osmosis membrane 110 of the reverse osmosis membrane group 100 is in reverse contact; the pure water flow grid 130 of each of the reverse osmosis membrane groups 100 is not associated with the waste water pipe 220 and other said reverse osmosis The front side of the reverse osmosis membrane 110 of the membrane group 100 is in contact; the raw water flows only in the influent water channel and is finally discharged by the waste water pipe 220. The pure water flows only in the water producing flow passage and is finally discharged by the pure water pipe 210, thereby avoiding pure water pollution. Guarantee the purification effect.

为了能够顺利的将纯水导出，在本实施例中，可以设置所述产水流道除靠近所述纯水管210的侧边以外的其他侧边均闭合密封，以使得所述产水流道仅具有朝向所述纯水管210的纯水出口；此时产水流道形成一个三侧密封一侧开口的膜袋，膜袋口对着纯水管210，限定膜袋内的纯水只能朝纯水管210流动；原水在反渗透膜片110的作用后产生纯水，纯水形成在膜袋内并流动到袋口进入纯水管210中。实际操作时，可以通过卷膜操作时进行实现密封，同时两端的密封位置还可以利用第一端盖300和第二端盖400的密封胶的密封效果进行第二次密封，进而实现更好的密封效果。In order to be able to smoothly drain the pure water, in the present embodiment, the water producing flow passage may be closed and sealed except for the side adjacent to the side of the pure water pipe 210, so that the water producing flow path is only Having a pure water outlet toward the pure water pipe 210; at this time, the product water flow channel forms a membrane bag with a three-side sealed side opening, and the membrane bag mouth faces the pure water pipe 210, and the pure water in the film bag can only be defined The pure water pipe 210 flows; the raw water generates pure water after the action of the reverse osmosis membrane 110, and the pure water is formed in the membrane bag and flows into the bag opening into the pure water pipe 210. In actual operation, the sealing can be achieved by the operation of the film winding, and the sealing position of the two ends can also be sealed for a second time by the sealing effect of the sealing glue of the first end cover 300 and the second end cover 400, thereby achieving better sealing. Sealing effect.

请具体参阅图6、图8和图9，在本发明的一实施例中，所述废水管220的数量为N个，N大于或等于3；所述纯水管210的横截面呈N边形设置，并对应具有N个侧表面，每一所述侧表面212上均设有所述纯水入水孔211；每一个所述废水管220对应一个所述侧表面212的位置设置。此时每一个所述废水管220朝向该侧表面212的一侧可以是平面，方便反渗透膜片组100伸入和卷绕。具体的，本实施例中，N=5，即废水管220的数量为5个，纯水管210的横截面大致呈正五边形设置，对应具有五个侧表面212，每一个所述废水管220对应一个所述侧表面212的位置设置。这种设置方式可以保证每个废水管220单独对应纯水管210的一个侧表面212，进行卷膜操作时互相之间不会彼此干扰，方便卷膜操作。为了保证每一个废水管220对应的反渗透膜片组100出产的纯水都能够及时的收集到纯水管210中，优选设置每一所述侧表面212上均间隔设有多个所述纯水入水孔211，且多个所述纯水入水孔211沿所述纯水管210的长度方向均匀排布，由此，每个位置的纯水都能够快速的流动到较近的纯水入水孔211中；为了能够及时排除废水，每一所述废水管220上均间隔设有多个所述废水入水孔221进入废水管220的内部通路，且多个所述废水入水孔221沿所述废水管220的长度方向均匀排布，保证每个位置的废水都能够快速的流动到较近的废水入水孔221中进入废水管220的内部通路。Referring to FIG. 6, FIG. 8 and FIG. 9, in an embodiment of the invention, the number of the waste water pipes 220 is N, N is greater than or equal to 3; the cross section of the pure water pipe 210 is N sides. The plurality of side surfaces are disposed on the side surface 212, and each of the side surfaces 212 is provided with the pure water inlet hole 211; and each of the waste water pipes 220 is disposed corresponding to a position of the side surface 212. At this time, the side of each of the waste water pipes 220 facing the side surface 212 may be a flat surface for facilitating the penetration and winding of the reverse osmosis membrane group 100. Specifically, in the embodiment, N=5, that is, the number of the waste water pipes 220 is five, and the cross section of the pure water pipe 210 is substantially in the shape of a regular pentagon, corresponding to five side surfaces 212, each of the waste water pipes. 220 corresponds to the positional setting of one of the side surfaces 212. This arrangement ensures that each of the waste water pipes 220 individually corresponds to one side surface 212 of the pure water pipe 210, and does not interfere with each other during the film winding operation, facilitating the operation of the film winding. In order to ensure that the pure water produced by the reverse osmosis membrane group 100 corresponding to each of the waste water pipes 220 can be collected into the pure water pipe 210 in time, it is preferable to provide a plurality of the pure ones on each of the side surfaces 212. The water enters the water hole 211, and a plurality of the pure water inlet holes 211 are evenly arranged along the length direction of the pure water pipe 210, whereby the pure water at each position can quickly flow to the near pure water into the water. In the hole 211, in order to be able to remove the waste water in time, each of the waste water pipes 220 is spaced apart from the internal passage of the waste water inlet hole 221 into the waste water pipe 220, and a plurality of the waste water inlet holes 221 are along The length direction of the waste water pipe 220 is evenly arranged, so that the waste water at each position can be quickly flowed into the internal passage of the waste water inlet hole 221 into the waste water pipe 220.

请参阅图12，在本发明的另一实施例中，所述纯水管210’的横截面呈圆形设置，所述纯水管210’的周壁沿其周向对应多个所述废水管220’划分为多个弧面段213，每一所述弧面段213上均设有所述纯水入水孔（未图示）；每一所述废水管220’对应一个所述弧面段213的位置设置。本实施例中，废水管220’的数量为6个，纯水管210’的周壁沿其周向对应多个所述废水管220’划分为6个弧面段213，每一个所述废水管220’对应一个所述弧面段213的位置设置。这种设置方式可以保证每个废水管220’单独对应纯水管210’的一个弧面段213，进行卷膜操作时互相之间不会彼此干扰，方便卷膜操作。为了保证每一个废水管220’对应的反渗透膜片组100出产的纯水都能够及时的收集到纯水管210’中，优选设置每一所述弧面段213上均间隔设有多个所述纯水入水孔（未图示），且多个所述纯水入水孔沿所述纯水管210’的长度方向均匀排布，由此，每个位置的纯水都能够快速的流动到较近的纯水入水孔中；为了能够及时排除废水，每一所述废水管220’上均间隔设有多个所述废水入水孔（未图示）进入废水管220’的内部通路，且多个所述废水入水孔沿所述废水管220’的长度方向均匀排布，保证每个位置的废水都能够快速的流动到较近的废水入水孔中进入废水管220’的内部通路。Referring to FIG. 12, in another embodiment of the present invention, the pure water pipe 210' has a circular cross section, and the peripheral wall of the pure water pipe 210' corresponds to a plurality of the waste pipes along the circumferential direction thereof. The 220' is divided into a plurality of curved surface segments 213, and each of the curved surface segments 213 is provided with the pure water inlet holes (not shown); each of the waste water pipes 220' corresponds to one of the curved surface segments Position setting of 213. In this embodiment, the number of the waste water pipes 220' is six, and the peripheral wall of the pure water pipe 210' is divided into six arc surface segments 213 corresponding to the plurality of the waste water pipes 220' in the circumferential direction thereof, and each of the waste water pipes 220' corresponds to the position setting of one of the arcuate segments 213. This arrangement ensures that each of the waste water pipes 220' individually corresponds to a curved surface section 213 of the pure water pipe 210', and does not interfere with each other during the film winding operation, facilitating the operation of the film winding. In order to ensure that the pure water produced by the reverse osmosis membrane group 100 corresponding to each waste water pipe 220' can be collected into the pure water pipe 210' in time, it is preferable to provide a plurality of intervals on each of the curved surface segments 213. The pure water enters a water hole (not shown), and a plurality of the pure water inlet holes are evenly arranged along the length direction of the pure water pipe 210', whereby the pure water at each position can flow rapidly To the nearest pure water inlet hole; in order to be able to remove the waste water in time, each of the waste water pipes 220' is spaced apart from a plurality of the waste water inlet holes (not shown) into the internal passage of the waste water pipe 220'. And a plurality of the wastewater water inlet holes are evenly arranged along the length direction of the waste water pipe 220', so that the wastewater at each position can be quickly flowed into the internal passage of the near waste water inlet hole into the waste water pipe 220'.

为了方便卷膜操作，可以设置所述纯水管210和多个所述废水管220共同组合形成圆柱体形；卷膜时，中心管组200旋转时比较均匀，不容易发生歪斜，同时卷制成品的外观也会比较均匀，便于卷制成品的安装到螺旋卷式反渗透膜元件700的壳体中，也便于螺旋卷式反渗透膜元件700的端盖与卷制成品的对准和密封。In order to facilitate the operation of the film winding, the pure water pipe 210 and the plurality of the waste water pipes 220 may be combined to form a cylindrical shape; when the film is wound, the central pipe group 200 is relatively uniform when rotated, is not prone to skew, and is rolled up at the same time. The appearance of the article will also be relatively uniform, facilitating the mounting of the rolled product into the housing of the spiral wound reverse osmosis membrane element 700, and also facilitating the alignment of the end cap of the spiral wound reverse osmosis membrane element 700 with the rolled product. And sealed.

请参阅图8和图11，为了达到更好的导流效果，在本发明的螺旋卷式反渗透膜元件700的中心管组200中，所述废水管220的周壁上开设有废水导流槽222，所述废水入水孔221设于所述废水导流槽222内。废水导流槽222的具体设置位置、形状和数量，可以根据具体情况选取，在本实施例中，该废水管220上间隔设有多个沿废水管220周向延伸的废水导流槽222，每一废水导流槽222内都设有一个废水入水孔221，废水导流槽222具有集水和导流的效果，能够帮助废水更准确快速的进入废水管220中。其他形状的废水导流槽222也能够实现集水和导流的效果，在此不做进一步限定。Referring to FIG. 8 and FIG. 11, in order to achieve a better flow guiding effect, in the central tube set 200 of the spiral wound reverse osmosis membrane element 700 of the present invention, a waste water guiding groove is opened on the peripheral wall of the waste water pipe 220. 222. The wastewater inlet hole 221 is disposed in the waste water guiding channel 222. The specific position, shape and quantity of the waste water guiding channel 222 can be selected according to the specific situation. In the embodiment, the waste water pipe 220 is provided with a plurality of waste water guiding channels 222 extending along the circumferential direction of the waste water pipe 220. Each of the wastewater guiding channels 222 is provided with a wastewater inlet hole 221. The wastewater guiding channel 222 has the effects of collecting water and diverting water, and can help the wastewater to enter the wastewater pipe 220 more accurately and quickly. Other shapes of the waste water guiding groove 222 can also achieve the effects of water collecting and guiding, and are not further limited herein.

实际生产纯水管210时，由于纯水管210一般长度较长，而半径较小，因此生产时内滑块沿轴向抽芯困难，导致纯水管210无法快速量产，为了解决这个问题，请参阅图10，在本实施例的中心管组200中，该纯水管210的周壁上开设有沿所述纯水管210长度方向延伸的第一让位开口214，生产该纯水管210时整个内滑块可以拆分为上中下三个滑块，中滑块可以通过第一让位开口214侧向抽芯，上下两个滑块可以分别通过两端管口抽芯，大大减小了生产难度，有利于纯水管210的快速量产。同时，第一让位开口214还能够起到纯水进水孔的功能，供纯水通过进入到纯水管210的内部通道中。由于纯水管210的整个外周壁在卷膜时都会受到挤压，为了防止膜片受压后在第一让位开口214处变形导致压伤，在本实施例中，所述第一让位开口214内设有第一加强筋215，所述第一加强筋215的两端分别连接所述第一让位开口214的不同的两条边。通过第一加强筋215对反渗透膜片组100的膜片进行支撑，能够有效防止反渗透膜片组100的膜片压伤。在本实施例中，第一加强筋215沿长度方向延伸，第一加强筋215的两端分别连接所述第一让位开口214的两个短边；显然第一加强筋215的设置方式不限于本实施例的具体方式，只要能够是实现支撑、不影响水路通畅并且不影响生产成型的结构都可以应用于本发明的技术方案中，第一加强筋215的具体设置数量、位置、形状都可以根据实际需要进行选取，在此不再赘述。When the pure water pipe 210 is actually produced, since the pure water pipe 210 generally has a long length and a small radius, it is difficult to draw the core in the axial direction during production, which causes the pure water pipe 210 to be mass-produced in a rapid manner, in order to solve this problem. Referring to FIG. 10, in the central tube set 200 of the embodiment, the first retaining opening 214 extending along the length of the pure water pipe 210 is opened on the peripheral wall of the pure water pipe 210 to produce the pure water pipe. At 210 o'clock, the entire inner slide can be split into upper, middle and lower three sliders. The middle slide can be pulled laterally through the first letment opening 214, and the upper and lower slides can be respectively pulled through the nozzles at both ends. The production difficulty is reduced, which is beneficial to the rapid mass production of the pure water pipe 210. At the same time, the first yielding opening 214 can also function as a pure water inlet hole for the pure water to pass into the internal passage of the pure water pipe 210. Since the entire outer peripheral wall of the pure water pipe 210 is pressed at the time of winding the film, in order to prevent the film from being deformed at the first yielding opening 214 after being pressed, the first insufficiency is caused. A first reinforcing rib 215 is disposed in the opening 214 , and two ends of the first reinforcing rib 215 are respectively connected to different two sides of the first letting opening 214 . The diaphragm of the reverse osmosis membrane group 100 is supported by the first rib 215, and the diaphragm crush of the reverse osmosis membrane group 100 can be effectively prevented. In this embodiment, the first reinforcing rib 215 extends along the length direction, and the two ends of the first reinforcing rib 215 are respectively connected to the two short sides of the first letting opening 214; obviously, the first reinforcing rib 215 is not disposed. The specific number, position, and shape of the first reinforcing rib 215 are all applicable to the technical solution of the present invention as long as it can be applied to the technical solution of the present invention as long as it can be supported without affecting the water passage and does not affect the production molding. It can be selected according to actual needs, and will not be described here.

生产废水管220时，考虑到抽芯问题，可以参考上述纯水管210的设置方式，请参阅图11，在所述废水管220的周壁上开设有沿所述废水管220长度方向延伸的第二让位开口223，减小废水管220的生产难度，有利于废水管220的快速量产。同时，第二让位开口223还能够起到废水入水孔221的功能，供废水通过进入到废水管220的内部通道中。为了废水管220处的膜片受压后在第二让位开口223处变形导致压伤，在本实施例中，所述第二让位开口223设于所述废水管220朝向纯水管210的一侧，这个位置受力相对较小，不容易发生损伤。还可以在第二让位开口223内设置第二加强筋224，所述第二加强筋224的两端分别连接所述第二让位开口223的不同的两条边。通过第二加强筋224对反渗透膜片组100的膜片进行支撑，能够有效防止反渗透膜片组100的膜片在过滤过程中压入第一让位开口214中导致压伤，进而导致脱盐率降低的问题；只要能够是实现支撑、不影响水路通畅并且不影响生产成型的第二加强筋224结构都可以应用于本发明的技术方案中，第二加强筋224的具体设置数量、位置、形状都可以根据实际需要进行选取，在此不再赘述。When the waste water pipe 220 is produced, in consideration of the core pulling problem, reference may be made to the arrangement of the pure water pipe 210. Referring to FIG. 11, the circumferential wall of the waste water pipe 220 is opened along the length of the waste water pipe 220. The second yielding opening 223 reduces the production difficulty of the waste water pipe 220, and is beneficial to the rapid mass production of the waste water pipe 220. At the same time, the second yielding opening 223 can also function as a waste water inlet hole 221 for the wastewater to pass into the internal passage of the waste water pipe 220. In the present embodiment, the second yielding opening 223 is disposed in the waste water pipe 220 toward the pure water pipe 210, so that the diaphragm at the waste water pipe 220 is deformed at the second retaining opening 223 to cause crushing. On one side, this position is relatively small and is not susceptible to damage. A second reinforcing rib 224 is further disposed in the second retaining opening 223, and two ends of the second reinforcing rib 224 are respectively connected to different two sides of the second retaining opening 223. Supporting the diaphragm of the reverse osmosis membrane group 100 by the second reinforcing rib 224 can effectively prevent the membrane of the reverse osmosis membrane group 100 from being pressed into the first yielding opening 214 during the filtration process, thereby causing crushing, thereby causing The problem of the reduction of the salt rejection rate; as long as the second reinforcement rib 224 structure capable of achieving the support, not affecting the water passage and not affecting the production molding can be applied to the technical solution of the present invention, the specific number and position of the second reinforcement rib 224 The shapes and shapes can be selected according to actual needs, and will not be described here.

请参阅图13，本发明还提出一种滤芯，该滤芯包括壳体900、水路转换器800和螺旋卷式反渗透膜元件700，该螺旋卷式反渗透膜元件700的具体结构参照上述实施例，由于本滤芯采用了上述所有实施例的全部技术方案，因此同样具有上述实施例的技术方案所带来的所有有益效果，在此不再一一赘述。所述螺旋卷式反渗透膜元件700容置于所述壳体900内；所述水路转换器800设有两条独立的水路，其中一条所述水路与所述废水排出口310相连通，另一条所述水路与所述纯水排出口320相连通。从端盖处流出的纯水和废水经过水路转换器800的引导排出到不同的管路中。本实施例中，壳体900包括容置部910和盖设于容置部910上的滤芯头920，螺旋卷式反渗透膜元件700的第二端盖400朝内伸入容置部910中，水路转换器800安装第一端盖300和滤芯头920之间。Referring to FIG. 13 , the present invention further provides a filter cartridge including a housing 900, a waterway converter 800, and a spiral wound reverse osmosis membrane element 700. The specific structure of the spiral wound reverse osmosis membrane element 700 is referred to the above embodiment. Since all the technical solutions of all the above embodiments are adopted, the present invention also has all the beneficial effects brought about by the technical solutions of the foregoing embodiments, and details are not described herein again. The spiral wound reverse osmosis membrane element 700 is housed in the casing 900; the waterway converter 800 is provided with two independent waterways, one of which is connected to the waste water discharge outlet 310, and the other One of the water passages communicates with the pure water discharge port 320. The pure water and waste water flowing out from the end cover are discharged to different pipes through the guidance of the water circuit converter 800. In this embodiment, the housing 900 includes a receiving portion 910 and a filter head 920 disposed on the receiving portion 910. The second end cover 400 of the spiral rolled reverse osmosis membrane element 700 extends inwardly into the receiving portion 910. The waterway converter 800 is mounted between the first end cap 300 and the filter head 920.

本发明还提出一种反渗透***，该反渗透***包括滤芯，该滤芯的具体结构参照上述实施例，由于本反渗透***采用了上述所有实施例的全部技术方案，因此同样具有上述实施例的技术方案所带来的所有有益效果，在此不再一一赘述。The present invention also provides a reverse osmosis water purifier, the reverse osmosis water purifier comprising a filter element, the specific structure of the filter element is referred to the above embodiment, and since the reverse osmosis water purifier adopts all the technical solutions of all the above embodiments, All the beneficial effects brought about by the technical solutions of the above embodiments are not repeated here.

应当说明的是，本发明的各个实施例的技术方案可以相互结合，但是必须是以本领域的技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当人认为这种技术方案的结合不存在，也不在本发明要求的保护范围之内。It should be noted that the technical solutions of the various embodiments of the present invention may be combined with each other, but must be based on the realization of those skilled in the art, and should be considered when the combination of technical solutions is contradictory or impossible to implement. The combination of the schemes does not exist and is not within the scope of protection required by the present invention.

以上所述仅为本发明的优选实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。The above description is only a preferred embodiment of the present invention, and thus does not limit the scope of the invention, and the equivalent structural transformations made by the description of the present invention and the contents of the drawings are directly or indirectly applied to other related technical fields. The same is included in the scope of patent protection of the present invention.

Claims

一种螺旋卷式反渗透膜元件，其特征在于，包括： A spiral wound reverse osmosis membrane element characterized by comprising:

中心管组，所述中心管组包括纯水管以及多个相互间隔设置的废水管，多个所述废水管环绕所述纯水管排布，所述纯水管的周壁上开设有连通所述纯水管的内部通道的纯水入水孔，每一所述废水管的周壁上开设有连通所述废水管的内部通道的废水入水孔；a central pipe group comprising a pure water pipe and a plurality of waste water pipes arranged at a distance, wherein the plurality of waste water pipes are arranged around the pure water pipe, and a communication center is opened on a peripheral wall of the pure water pipe a pure water inlet hole of the internal passage of the pure water pipe, and a peripheral wall of each of the waste water pipes is provided with a waste water inlet hole connecting the internal passage of the waste pipe;

多页反渗透膜片组，每一个所述反渗透膜片组均具有位于所述中心管组内部的第一部分和位于所述中心管组外部的第二部分，每一所述废水管和所述纯水管被一个所述反渗透膜片组的第一部分隔开；多个所述反渗透膜片组的第二部分形成围绕在所述中心管组的周围的多层薄膜组件；a multi-page reverse osmosis membrane group, each of said reverse osmosis membrane groups having a first portion located inside said central tube group and a second portion located outside said central tube group, each said wastewater tube and chamber The pure water pipe is separated by a first portion of the reverse osmosis membrane group; the second portion of the plurality of reverse osmosis membrane groups forms a multilayer film assembly surrounding the central tube group;

第一端盖和第二端盖，所述第一端盖和第二端盖分别套设于所述中心管组和所述多页反渗透膜片组的两端，以对所述中心管组和所述反渗透膜片组进行定位；a first end cover and a second end cover, the first end cover and the second end cover are respectively sleeved on the two ends of the central tube set and the multi-page reverse osmosis membrane group to face the central tube The group and the reverse osmosis membrane group are positioned;

其中，所述第一端盖设有废水排出口和纯水排出口；或者，所述第一端盖设有废水排出口，所述第二端盖设有纯水排出口；所述废水管连通废水排出口设置，所述纯水管连通所述纯水排出口设置。Wherein, the first end cover is provided with a waste water discharge port and a pure water discharge port; or the first end cover is provided with a waste water discharge port, and the second end cover is provided with a pure water discharge port; The waste water discharge port is disposed, and the pure water pipe is connected to the pure water discharge port.
如权利要求1所述的螺旋卷式反渗透膜元件，其特征在于，所述废水排出口和所述纯水排出口均设置于所述第一端盖上。A spiral wound reverse osmosis membrane element according to claim 1, wherein said waste water discharge port and said pure water discharge port are both disposed on said first end cap.
如权利要求1所述的螺旋卷式反渗透膜元件，其特征在于，所述第一端盖的内侧涂覆有密封胶，所述第一端盖与所述反渗透膜片组之间通过密封胶粘合密封；和/或，The spiral wound reverse osmosis membrane element according to claim 1, wherein an inner side of said first end cap is coated with a sealant, and said first end cap passes between said reverse osmosis membrane group Sealant adhesive seal; and / or,

所述第二端盖的内侧涂覆有密封胶，所述第二端盖与所述反渗透膜片组之间通过密封胶粘合密封。The inner side of the second end cap is coated with a sealant, and the second end cap is sealed with the reverse osmosis membrane sheet by a sealant.
如权利要求2所述的螺旋卷式反渗透膜元件，其特征在于，The spiral wound reverse osmosis membrane element according to claim 2, wherein

所述第一端盖的内侧对应所述废水管的位置和数量凸设有多个连通所述废水排出口的第一伸入管，所述第一伸入管伸入至对应的所述废水管中，并连通所述废水排出口和对应的所述废水管；a first extension tube communicating with the waste water discharge port is protruded from an inner side of the first end cover corresponding to the position and the quantity of the waste water pipe, and the first extension pipe extends into the corresponding wastewater And communicating with the waste water discharge port and the corresponding waste water pipe;

所述第一端盖的内侧对应所述纯水管的位置凸设有连通所述纯水排出口的第二伸入管，所述第二伸入管伸入至所述纯水管中，并连通所述纯水排出口和所述纯水管。a second extension tube communicating with the pure water discharge port is protruded from an inner side of the first end cover corresponding to the position of the pure water pipe, and the second extension pipe extends into the pure water pipe. And connecting the pure water discharge port and the pure water pipe.
如权利要求2所述的螺旋卷式反渗透膜元件，其特征在于，The spiral wound reverse osmosis membrane element according to claim 2, wherein

所述第二端盖的内侧对应所述废水管的位置和数量凸设有多个第一定位凸起，所述第一定位凸起伸入至对应的所述废水管中设置；a plurality of first positioning protrusions are protruded from the inner side of the second end cover corresponding to the position and the quantity of the waste water pipe, and the first positioning protrusions are protruded into the corresponding waste pipe;

所述第二端盖的内侧对应所述纯水管的位置凸设有第二定位凸起，所述第二定位凸起伸入至所述纯水管中设置。A second positioning protrusion is protruded from an inner side of the second end cover corresponding to the position of the pure water pipe, and the second positioning protrusion extends into the pure water pipe.
如权利要求2所述的螺旋卷式反渗透膜元件，其特征在于，The spiral wound reverse osmosis membrane element according to claim 2, wherein

所述纯水管远离所述第一端盖的一端管口被封堵，以使得纯水向所述第一端盖的纯水排出口流动； The pure water pipe is blocked away from the end of the first end cover, so that pure water flows to the pure water discharge port of the first end cover;

所述废水管远离所述第一端盖的一端管口被封堵，以使得废水向所述第一端盖的废水排出口流动。The waste pipe is sealed away from the end of the first end cover to allow the waste water to flow to the waste water discharge port of the first end cover.
如权利要求1所述的螺旋卷式反渗透膜元件，其特征在于，每一个所述反渗透膜片组包括反渗透膜片、进水导流网以及纯水导流网；The spiral wound reverse osmosis membrane element according to claim 1, wherein each of said reverse osmosis membrane groups comprises a reverse osmosis membrane, an influent diversion network, and a pure water diversion network;

每一个所述反渗透膜片组的反渗透膜片正面向内对折设置，多个所述反渗透膜片组的第二部分叠合并共同沿周向缠绕所述中心管组；同一所述反渗透膜片正面夹层之间形成进水流道；相邻两个所述反渗透膜片的反面夹层之间形成产水流道；所述进水导流网和所述废水管位于进水流道中，所述纯水导流网位于产水流道中。The reverse osmosis membrane of each of the reverse osmosis membrane groups is disposed inwardly and inwardly, and the second portions of the plurality of reverse osmosis membrane groups are stacked and wound circumferentially around the central tube group; An inlet flow passage is formed between the front interlayers of the permeable membrane; a water producing flow passage is formed between the opposite sandwich layers of the two adjacent reverse osmosis membranes; the inlet water guiding net and the waste water pipe are located in the inlet flow passage The pure water diversion network is located in the water production channel.
如权利要求7所述的螺旋卷式反渗透膜元件，其特征在于，所述产水流道除靠近所述纯水管的侧边以外的其他侧边均闭合密封，以使得所述产水流道仅具有朝向所述纯水管的纯水出口。A spiral wound reverse osmosis membrane element according to claim 7, wherein said water producing flow passage is closed and sealed except for the side edges adjacent to the side of said pure water pipe, so that said water producing flow path There is only a pure water outlet towards the pure water pipe.
如权利要求1所述的螺旋卷式反渗透膜元件，其特征在于，所述废水管的数量为N个，N大于或等于3；The spiral wound reverse osmosis membrane element according to claim 1, wherein the number of the waste water pipes is N, and N is greater than or equal to 3;

所述纯水管的横截面呈N边形设置，并对应具有N个侧表面，每一所述侧表面上均设有所述纯水入水孔；The cross section of the pure water pipe is N-shaped and correspondingly has N side surfaces, and each of the side surfaces is provided with the pure water inlet hole;

每一个所述废水管对应一个所述侧表面的位置设置。Each of the waste pipes is disposed corresponding to a position of one of the side surfaces.
如权利要求9所述的螺旋卷式反渗透膜元件，其特征在于，每一所述侧表面上均间隔设有多个所述纯水入水孔，且多个所述纯水入水孔沿所述纯水管的长度方向均匀排布，和/或，每一所述废水管上均间隔设有多个所述废水入水孔，且多个所述废水入水孔沿所述废水管的长度方向均匀排布。The spiral wound reverse osmosis membrane element according to claim 9, wherein each of said side surfaces is spaced apart from said plurality of said pure water inlet holes, and said plurality of said pure water inlet holes are provided The length direction of the pure water pipes is evenly arranged, and/or each of the waste water pipes is spaced apart from the plurality of the waste water inlet holes, and a plurality of the waste water inlet holes are along the length direction of the waste water pipe Evenly arranged.
如权利要求1所述的螺旋卷式反渗透膜元件，其特征在于，The spiral wound reverse osmosis membrane element according to claim 1, wherein

所述纯水管的横截面呈圆形设置，所述纯水管的周壁沿其周向对应多个所述废水管划分为多个弧面段，每一所述弧面段上均设有所述纯水入水孔；The cross section of the pure water pipe is circularly disposed, and the peripheral wall of the pure water pipe is divided into a plurality of arc surface segments corresponding to the plurality of the waste water pipes in a circumferential direction thereof, and each of the arc surface segments is provided The pure water is introduced into the water hole;

每一所述废水管对应一个所述弧面段的位置设置。Each of the waste water pipes is disposed corresponding to a position of one of the arcuate segments.
如权利要求11所述的螺旋卷式反渗透膜元件，其特征在于，每一所述弧面段上均间隔设有多个所述纯水入水孔，且多个所述纯水入水孔沿所述纯水管的长度方向均匀排布，和/或，每一所述废水管上均间隔设有多个所述废水入水孔，且多个所述废水入水孔沿所述废水管的长度方向均匀排布。The spiral wound reverse osmosis membrane element according to claim 11, wherein each of said curved surface sections is provided with a plurality of said pure water inlet holes, and said plurality of pure water inlet holes are spaced apart The length direction of the pure water pipes is evenly arranged, and/or each of the waste water pipes is spaced apart from the plurality of the waste water inlet holes, and the plurality of waste water inlet holes are along the length of the waste water pipe The direction is evenly arranged.
如权利要求1所述的螺旋卷式反渗透膜元件，其特征在于，所述废水管的周壁上开设有废水导流槽，所述废水入水孔设于所述废水导流槽内。The spiral wound reverse osmosis membrane element according to claim 1, wherein a waste water guiding groove is formed in a peripheral wall of the waste water pipe, and the wastewater inlet water hole is disposed in the waste water guiding groove.
如权利要求1所述的螺旋卷式反渗透膜元件，其特征在于，所述纯水管的周壁上开设有沿所述纯水管长度方向延伸的第一让位开口。The spiral wound reverse osmosis membrane element according to claim 1, wherein a peripheral wall of the pure water pipe is provided with a first letting opening extending in a longitudinal direction of the pure water pipe.
如权利要求14所述的螺旋卷式反渗透膜元件，其特征在于，所述第一让位开口内设有第一加强筋，所述第一加强筋的两端分别连接所述第一让位开口的不同的两条边。The spiral wound reverse osmosis membrane element according to claim 14, wherein a first reinforcing rib is disposed in the first retaining opening, and two ends of the first reinforcing rib are respectively connected to the first letting The different two sides of the opening.
如权利要求1所述的螺旋卷式反渗透膜元件，其特征在于，所述废水管的周壁上开设有沿所述废水管长度方向延伸的第二让位开口。The spiral wound reverse osmosis membrane element according to claim 1, wherein a peripheral wall of the waste water pipe is provided with a second yielding opening extending in a longitudinal direction of the waste water pipe.
如权利要求16所述的螺旋卷式反渗透膜元件，其特征在于，所述第二让位开口内设有第二加强筋，所述第二加强筋的两端分别连接所述第二让位开口的不同的两条边。The spiral wound reverse osmosis membrane element according to claim 16, wherein a second reinforcing rib is disposed in the second retaining opening, and two ends of the second reinforcing rib are respectively connected to the second letting The different two sides of the opening.
如权利要求1所述的螺旋卷式反渗透膜元件，其特征在于，所述纯水管和多个所述废水管共同组合形成圆柱体形。A spiral wound reverse osmosis membrane element according to claim 1, wherein said pure water pipe and said plurality of said waste water pipes are combined to form a cylindrical shape.
一种滤芯，其特征在于，包括壳体、水路转换器和如权利要求1所述的螺旋卷式反渗透膜元件；所述螺旋卷式反渗透膜元件容置于所述壳体内；所述水路转换器设有两条独立的水路，其中一条所述水路与所述第一端盖的废水排出口相连通，另一条所述水路与所述第一端盖的纯水排出口相连通。A filter cartridge, comprising: a housing, a waterway converter, and the spiral wound reverse osmosis membrane element according to claim 1; the spiral wound reverse osmosis membrane element is housed in the housing; The waterway converter is provided with two independent waterways, one of which is in communication with the waste water discharge outlet of the first end cap, and the other of the waterway is in communication with the pure water discharge outlet of the first end cap.
一种反渗透***，其特征在于，包括如权利要求19所述的滤芯。A reverse osmosis water purifier characterized by comprising the filter element of claim 19.