Integrated reverse osmosis composite filter element

Abstract

The present invention relates to the field of filtration technology, specifically an integrated reverse osmosis composite filter element, including a water storage cylinder, the water storage cylinder having a sealed end and an open end, the open end of the water storage cylinder being connected to the surface of a spacer and covered on the outside of a perforation, the side wall of the water storage cylinder being evenly provided with a plurality of water outlet holes, an extrusion piece being slidably connected inside the water storage cylinder; the pure water channel of the filter element body injects pure water into the water storage cylinder in a water-making state, the water-making state being that the sewage outlet is closed and the raw water inlet is connected; the water storage cylinder injects pure water into the pure water channel in a cleaning state, the cleaning state being that the sewage outlet is connected and the raw water inlet is closed. The present invention changes the traditional method of discharging wastewater while filtering, adopts a one-time cleaning after the water use is finished and the wastewater is discharged at one time, overcomes certain technical prejudices, and the cleaning from inside to outside after the water use is finished can also ensure the cleanliness of the membrane surface and reduce the amount of wastewater.

Description

Technical Field

[0001] The invention relates to the field of filtration technology, in particular to an integrated reverse osmosis composite filter element. Background Art

[0002] A reverse osmosis filter element is a membrane separation operation that uses pressure difference as the driving force to separate the solvent from the solution. Pressure is applied to the liquid on one side of the membrane. When the pressure exceeds its osmotic pressure, the solvent will reversely permeate in the opposite direction of natural osmosis. It is usually installed in a water purifier. Raw water is filtered through the reverse osmosis membrane to form pure water outflow, and the reverse osmosis membrane intercepts impurities in the raw water and forms wastewater outflow along with some of the water that has not passed through the membrane, forming continuous filtration. However, the current national standard filtration efficiency is 60%, which means that for every three cups of pure water produced, two cups of wastewater are produced, and the amount of wastewater is relatively large.

[0003] Therefore, an integrated reverse osmosis composite filter element is urgently needed to solve the above problems. Summary of the invention

[0004] The present invention aims to solve the problem of large amount of wastewater in the reverse osmosis filter element in the prior art, and provides an integrated reverse osmosis composite filter element. The specific technical solution is as follows:

[0005] The integrated reverse osmosis composite filter element comprises a housing, wherein the housing has a sewage outlet, a raw water inlet and a pure water outlet, and the sewage outlet and the raw water inlet are both equipped with electromagnetic valves for control;

[0006] A spacer, the spacer is arranged in the shell and divides its internal space into a mixing chamber and a pure water chamber, the mixing chamber is connected to the sewage outlet and the raw water inlet, the pure water chamber is connected to the pure water outlet, and a perforation is opened inside the spacer;

[0007] A filter element body, wherein the filter element body is disposed in the mixing chamber and has a pure water channel inside the filter element body;

[0008] A water storage cylinder, the water storage cylinder having a sealed end and an open end, the open end of the water storage cylinder being connected to the surface of the spacer and covered outside the perforation, the side wall of the water storage cylinder being provided with a plurality of groups of water outlet holes evenly provided, and an extrusion piece being slidably connected inside the water storage cylinder;

[0009] The pure water channel of the filter element body injects pure water into the water storage cylinder in the water production state, wherein the sewage outlet is closed and the raw water inlet is connected;

[0010] The water storage cylinder injects pure water into the pure water channel in a clean state, and the clean state is that the sewage outlet is connected and the raw water inlet is closed.

[0011] Through the above technical scheme, the traditional filter element discharges wastewater while filtering, with the aim of ensuring the cleanliness of the membrane surface and extending its service life. The present application changes the traditional method of discharging wastewater while filtering, and adopts a one-time cleaning after the water use is finished and discharges the wastewater at one time, overcoming certain technical prejudices. The cleaning from the inside to the outside after the water use is finished can also ensure the cleanliness of the membrane surface and reduce the amount of wastewater.

[0012] As a further technical solution of the present invention, a plurality of reflux channels are evenly arranged in the spacer, one end of the reflux channel is connected with the perforation, the other end of the reflux channel is connected with the mixing chamber and faces between the filter element body and the inner wall of the shell, and a one-way valve is arranged in the reflux channel, and the one-way valve controls the one-way flow of the reflux channel, and the flow direction is from the perforation to the mixing chamber.

[0013] Through the above technical solution, on the one hand, impurities are prevented from entering the surface of the filter element body for the second time. On the second hand, the surface of the filter element body is fully adsorbed and cleaned. On the third hand, the forward osmosis problem is solved to avoid the TDS value of the "first cup of water" being too high.

[0014] As a further technical solution of the present invention, a plug is slidably connected inside the perforation, and the plug includes a sealing body and a flow guide. The sealing body matches the shape of the perforation, and the side wall of the sealing body fits the reflux channel and forms a blockage thereon, and a flow hole is opened in the plug.

[0015] Through the above technical solution, the reflux channel is blocked in the water production state to avoid the backflow of pure water in the water production state.

[0016] As a further technical solution of the present invention, the plug further includes a flow guide, which is connected to one end of the sealing body. The flow guide is designed to be conical, and the pointed end of the flow guide faces the water storage cylinder.

[0017] Through the above technical solution, the backflow water flows evenly into the multiple groups of reflux channels, thereby improving the flushing effect of the reflux channels on the mixing chamber.

[0018] As a further technical solution of the present invention, the inner wall of the perforation is connected to a limiting ring, and when the plug is in contact with the limiting ring, the reflux channel is blocked.

[0019] Through the above technical solution, the moving range of the plug is limited to prevent the plug from being separated from the perforation.

[0020] As a further technical solution of the present invention, the flow hole includes a main channel and a branch channel, the main channel is opened at one end of the plug, one end of the branch channel is connected to the side wall of the main channel, the other end of the branch channel is extended to the curved surface of the guide member and is connected to the water storage cylinder, and the branch channels are provided in multiple groups, and the multiple groups of branch channels are evenly distributed around the main channel.

[0021] The above technical solution improves the convenience of flushing out blockages with pure water.

[0022] As a further technical solution of the present invention, the extruded part is a composite structure.

[0023] Through the above technical solution, the sealing effect of the extruded component when sliding in the water storage cylinder is improved.

[0024] As a further technical solution of the present invention, a spring is arranged in the water storage cylinder, one end of the spring is connected to the extrusion piece, and the other end of the spring is connected to the wall of the water storage cylinder.

[0025] By means of the above technical solution, the downward extrusion force of the extrusion piece is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0027] Figure 2 It is a three-dimensional cross-sectional structural schematic diagram of the present invention;

[0028] Figure 3 It is a schematic diagram of a three-dimensional cross-sectional structure of a water storage cylinder of the present invention;

[0029] Figure 4 It is a schematic diagram of a three-dimensional cross-sectional structure of a spacer of the present invention;

[0030] Figure 5 It is a schematic diagram of the three-dimensional cross-sectional structure of the plug of the present invention.

[0031] Description of the drawings: 110, shell; 111, sewage outlet; 112, raw water inlet; 113, pure water outlet; 114, mixing chamber; 115, pure water chamber; 120, filter element body; 121, pure water channel; 130, spacer; 131, perforation; 132, reflux channel; 133, one-way valve; 134, limit ring; 140, water storage cylinder; 141, water outlet; 142, extrusion piece; 143, spring; 150, plug; 151, sealing body; 152, guide piece; 160, flow hole; 161, main channel; 162, branch channel. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0033] Aiming at the problem of large amount of wastewater in the filtration method in the existing technology; Figure 1 A schematic diagram of the three-dimensional structure in this embodiment is shown; Figure 2 A schematic diagram of a three-dimensional cross-sectional structure in this embodiment is shown; Figure 3 A schematic diagram of a three-dimensional cross-sectional structure of a water storage cylinder in this embodiment is shown; Figure 4 A schematic diagram of a three-dimensional cross-sectional structure of a spacer in this embodiment is shown; Figure 5 The figure shows a schematic diagram of a three-dimensional cross-sectional structure of the plug in this embodiment; Figure 1-5 In the embodiment, the integrated reverse osmosis composite filter element comprises a housing 110, a filter element body 120, a spacer 130 and a water storage cylinder 140. The housing 110 has a sewage outlet 111, a raw water inlet 112 and a pure water outlet 113. Solenoid valves are installed in the sewage outlet 111 and the raw water inlet 112 for control. The spacer 130 is arranged in the housing 110 and its internal space is divided into a mixing chamber 114 and a pure water chamber 115. The mixing chamber 114 is connected to the sewage outlet 111 and the raw water inlet 112, and the pure water chamber 115 is connected to the pure water outlet 113. A perforation 131 is opened inside the spacer 130. The filter element body 120 is arranged in the mixing chamber 114. The main body 120 has a pure water channel 121 inside, and the water storage cylinder 140 has a sealed end and an open end. The open end of the water storage cylinder 140 is connected to the surface of the spacer 130 and is covered on the outside of the perforation 131. The side wall of the water storage cylinder 140 is evenly provided with multiple groups of water outlet holes 141, and an extrusion piece 142 is slidably connected inside the water storage cylinder 140. The pure water channel 121 of the filter element main body 120 injects pure water into the water storage cylinder 140 in the water making state. The water making state is that the sewage outlet 111 is closed and the raw water inlet 112 is connected. The water storage cylinder 140 injects pure water into the pure water channel 121 in the cleaning state. The cleaning state is that the sewage outlet 111 is connected and the raw water inlet 112 is closed.

[0034] In some specific embodiments, the extrusion member 142 may be a double-layer structure of a plate material and a rubber pad.

[0035] In some other specific embodiments, the extrusion member 142 may be a three-layer structure of a plate, a rubber pad, and a plate.

[0036] In some other specific embodiments, the extrusion member 142 may be a three-layer structure of a rubber pad, a plate, and a rubber pad.

[0037] In the water production state, the sewage outlet 111 is closed by controlling the electromagnetic valve, and the raw water inlet 112 is connected. The high-pressure raw water enters the mixing chamber 114 through the raw water inlet 112 and is filtered by the filter element main body 120. The pure water enters the pure water channel 121 and enters the water storage cylinder 140 through the perforation 131 and pushes the extrusion piece 142 to slide in the water storage cylinder 140. When the lower edge of the extrusion piece 142 is higher than the lower edge of the water outlet 141, the pure water flows into the pure water chamber 115 from the water outlet 141 and finally flows out from the pure water outlet 113, while the waste water continues to stay in the mixing chamber 114 and forms a mixed liquid between the waste water and the raw water with the raw water that enters subsequently and enters the filter element main body 120 for filtration again, and this cycle repeats.

[0038] In the cleaning state, the sewage outlet 111 is controlled to be connected through the solenoid valve, and the raw water inlet 112 is closed. Due to the gravity of the extrusion piece 142 cooperating with the static pressure of the water, the extrusion piece 142 slides in the water storage cylinder 140. When the lower edge of the extrusion piece 142 is lower than the lower edge of the water outlet 141, the pure water stored in the water storage cylinder 140 enters the pure water channel 121 through the perforation 131, and flushes the impurities adhering to the surface of the filter element main body 120 from the inside to the outside, forming self-cleaning. At the same time, the mixed liquid in the mixing chamber 114 connects the impurities and is squeezed out through the sewage outlet 111.

[0039] In order to improve the flushing effect, multiple groups of reflux channels 132 are evenly opened in the spacer 130. One end of the reflux channel 132 is connected to the perforation 131, and the other end of the reflux channel 132 is connected to the mixing chamber 114 and faces between the filter element body 120 and the inner wall of the shell 110. A one-way valve 133 is arranged in the reflux channel 132. The one-way valve 133 controls the one-way flow of the reflux channel 132, and the flow direction is from the perforation 131 to the mixing chamber 114.

[0040] In the cleaning state, when the pure water in the water storage cylinder 140 flows back, a part of the water flows into the pure water channel 121 through the perforation 131 to rinse the filter element body 120 and then flows into the mixing chamber 114, and the other part of the water flows directly into the mixing chamber 114 through the reflux channel 132 and rinses along the trajectory of the filter element body 120.

[0041] On the one hand, the water flow rushing out of the reflux channel 132 cooperates with the water flow in the pure water channel 121. The water flow in the pure water channel 121 rushes directly from the inside to the outside to lift up the impurities, and the water flow rushing out of the reflux channel 132 directly takes away the lifted impurities, preventing the impurities from entering the surface of the filter element main body 120 for the second time.

[0042] Secondly, when the water flow flushed out of the reflux channel 132 moves along the trajectory of the surface of the filter element main body 120, negative pressure is generated, which sucks in and takes away the impurities on the surface of the filter element main body 120. When flushing, the uniform multiple groups of reflux channels 132 can form an enclosing adsorption channel on the surface of the filter element main body 120, thereby comprehensively adsorbing and cleaning the surface of the filter element main body 120.

[0043] Thirdly, the water flow from the reflux channel 132 generates an extrusion force on the mixed liquid, which can push the mixed liquid out of the sewage outlet 111, so that the mixing chamber 114 is filled with pure water, solving the forward osmosis problem and avoiding the TDS value of the "first cup of water" being too high.

[0044] In order to prevent pure water from flowing back from the reflux channel 132 when water is produced, a plug 150 is slidably connected inside the perforation 131. The plug 150 includes a sealing body 151 and a flow guide 152. The sealing body 151 matches the shape of the perforation 131. The side wall of the sealing body 151 fits the reflux channel 132 and blocks it. A flow hole 160 is opened in the plug 150.

[0045] In the water production state, the plug 150 is impacted by the pure water and slides in the through hole 131 , the side wall of the sealing body 151 blocks the reflux channel 132 , and the pure water flows into the water storage cylinder 140 through the flow hole 160 .

[0046] In the cleaning state, the pure water in the water storage cylinder 140 flows back and presses the plug 150 , causing the plug 150 to slide in the perforation 131 , thereby releasing the blockage of the reflux channel 132 , diverting the backflowing pure water, and allowing part of the pure water to enter the reflux channel 132 .

[0047] The plug 150 further includes a guide member 152 . The guide member 152 is connected to one end of the sealing body 151 . The guide member 152 is designed to be conical, and the pointed end of the guide member 152 faces the water storage cylinder 140 .

[0048] In the cleaning state, the backflowing pure water is evenly guided by the sealing body 151 into the multiple groups of reflux channels 132, so that the pure water is evenly distributed, thereby improving the comprehensiveness of flushing.

[0049] The inner wall of the through hole 131 is connected to a limiting ring 134 , and when the plug 150 is in contact with the limiting ring 134 , the reflux channel 132 is blocked.

[0050] When the plug 150 is impacted by the pure water in the pure water channel 121 and moves along the trajectory of the through hole 131 , the limiting ring 134 limits the plug 150 to prevent the plug 150 from being separated from the through hole 131 .

[0051] The flow hole 160 includes a main channel 161 and a branch channel 162. The main channel 161 is opened at one end of the plug 150. One end of the branch channel 162 is connected to the side wall of the main channel 161. The other end of the branch channel 162 is extended to the curved surface of the guide member 152 and is connected to the water storage cylinder 140. There are multiple groups of branch channels 162, and the multiple groups of branch channels 162 are evenly distributed around the main channel 161.

[0052] After entering the main channel 161 , the pure water can directly impact the end wall of the main channel 161 , thereby easily pushing the plug 150 to move along the trajectory of the through hole 131 .

[0053] A spring 143 is disposed in the water storage cylinder 140 , one end of the spring 143 is connected to the extrusion piece 142 , and the other end of the spring 143 is connected to the wall of the water storage cylinder 140 .

[0054] When pure water pushes up the extrusion piece 142 , the spring 143 is squeezed and deformed. When the raw water inlet 112 is closed, the elastic force of the spring 143 can cooperate with the gravity of the extrusion piece 142 and the static pressure of the water to pour the pure water stored in the water storage cylinder 140 back into the perforation 131 .

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. The integrated reverse osmosis composite filter element is characterized by: include: A housing (110), the housing (110) having a sewage outlet (111), a raw water inlet (112) and a pure water outlet (113), and solenoid valves are installed in the sewage outlet (111) and the raw water inlet (112) for control; a spacer (130), the spacer (130) being arranged in the housing (110) and dividing its internal space into a mixing chamber (114) and a pure water chamber (115), the mixing chamber (114) being connected to the sewage outlet (111) and the raw water inlet (112), the pure water chamber (115) being connected to the pure water outlet (113), and a perforation (131) being provided inside the spacer (130); A filter element body (120), the filter element body (120) being arranged in the mixing chamber (114), and having a pure water channel (121) inside the filter element body (120); A water storage cylinder (140), the water storage cylinder (140) having a sealed end and an open end, the open end of the water storage cylinder (140) being connected to the surface of the spacer (130) and covering the outside of the perforation (131), a plurality of groups of water outlet holes (141) being evenly arranged on the side wall of the water storage cylinder (140), and an extrusion piece (142) being slidably connected inside the water storage cylinder (140); The pure water channel (121) of the filter element body (120) injects pure water into the water storage cylinder (140) in a water production state, wherein the sewage outlet (111) is closed and the raw water inlet (112) is connected; The water storage cylinder (140) injects pure water into the pure water channel (121) in a clean state, wherein the sewage outlet (111) is connected and the raw water inlet (112) is closed; A plurality of groups of reflux channels (132) are evenly arranged in the spacer (130); one end of the reflux channel (132) is in communication with the through hole (131); the other end of the reflux channel (132) is in communication with the mixing chamber (114) and faces between the filter element body (120) and the inner wall of the housing (110); a one-way valve (133) is arranged in the reflux channel (132); the one-way valve (133) controls the one-way flow of the reflux channel (132); the flow direction is from the through hole (131) to the mixing chamber (114); A plug (150) is slidably connected inside the through hole (131), and the plug (150) comprises a sealing body (151) and a flow guide (152). The sealing body (151) matches the shape of the through hole (131), and the side wall of the sealing body (151) fits the reflux channel (132) to form a blockage thereon. A flow hole (160) is provided inside the plug (150).

2. The integrated reverse osmosis composite filter element according to claim 1, characterized in that: The plug (150) further comprises a flow guide (152), wherein the flow guide (152) is connected to one end of the sealing body (151), and the flow guide (152) is designed to be conical, with the pointed end of the flow guide (152) facing the water storage cylinder (140).

3. The integrated reverse osmosis composite filter element according to claim 2, characterized in that: The inner wall of the through hole (131) is connected to a limiting ring (134), and when the plug (150) is in contact with the limiting ring (134), the reflux channel (132) is blocked.

4. The integrated reverse osmosis composite filter element according to claim 3, characterized in that: The flow hole (160) comprises a main channel (161) and a branch channel (162); the main channel (161) is opened at one end of the plug (150); one end of the branch channel (162) is connected to the side wall of the main channel (161); the other end of the branch channel (162) is extended to the curved surface of the flow guide (152) and is connected to the water storage cylinder (140); a plurality of groups of branch channels (162) are provided, and the plurality of groups of branch channels (162) are evenly distributed around the main channel (161).

5. The integrated reverse osmosis composite filter element according to claim 4, characterized in that: The extrusion piece (142) is a composite structure. A spring (143) is arranged inside the water storage cylinder (140). One end of the spring (143) is connected to the extrusion piece (142), and the other end of the spring (143) is connected to the wall of the water storage cylinder (140).

6. The integrated reverse osmosis composite filter element according to claim 4, characterized in that: A spring (143) is arranged in the water storage cylinder (140); one end of the spring (143) is connected to the extrusion piece (142), and the other end of the spring (143) is connected to the wall of the water storage cylinder (140).

Images