Reverse osmosis filter element and filter device

Abstract

The utility model discloses a reverse osmosis filter element and a filtering device, the reverse osmosis filter element comprises a filtering assembly and an opening and closing assembly, an inflow channel, a purified water channel and a waste water channel are arranged in the filtering assembly, and the inflow channel is respectively communicated with the purified water channel and the waste water channel; the opening and closing assembly comprises a blocking piece and an elastic piece, the blocking piece and the elastic piece are both arranged in the purified water channel, and the elastic piece is connected with the blocking piece, so that the blocking piece abuts against the inner wall of the purified water channel and is attached to the inner wall of the purified water channel to seal the purified water channel. The opening and closing assembly is arranged in the water purification channel, the opening and closing assembly comprises the resisting piece and the elastic piece, the resisting piece abuts against the inner wall of the water purification channel under the action of the elastic piece so that the water purification channel can be closed in a one-way mode to avoid backflow of purified water, a one-way valve does not need to be additionally arranged, and the internal structure of the reverse osmosis membrane filter element is simpler; and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to filter device technical field especially relates to a kind of reverse osmosis filter element and filter device. BACKGROUND

[0002] Current filter device is widely used, especially water purification equipment market is huge. With the development of science and technology, more and more filter device and other products appear. Filter element is the core in filter device, reverse osmosis membrane filter element is usually provided with one-way valve, and the water outlet direction is controlled by one-way valve. But using one-way valve, it will make the internal structure of reverse osmosis membrane filter element more complex, and objectively increase the production cost, especially in the trend of miniaturization of water purifier and other products, this kind of filter element structure can not meet the market demand more and more. SUMMARY

[0003] To solve the problem that setting one-way valve makes the internal structure of reverse osmosis membrane filter element more complex in the prior art, the utility model provides a kind of reverse osmosis filter element and filter device.

[0004] A kind of reverse osmosis filter element provided by the application includes filter assembly and open-close component, the filter assembly is internally provided with inflow channel, clean water channel and wastewater channel, the inflow channel is communicated with the clean water channel and the wastewater channel respectively;The open-close component includes stopper and elastic piece, the stopper and the elastic piece are all arranged in the clean water channel, the elastic piece is connected with the stopper, to make the stopper and the inner wall of the clean water channel tightly fit and close the clean water channel.

[0005] In some embodiments, the clean water channel is internally provided with guide head, the edge of the guide head is sealingly connected with the inner wall of the clean water channel, the middle part of the guide head is provided with flow port, the side of the guide head away from water flow direction is provided with end face, the elastic piece abuts against the stopper, to make the stopper and the end face abut, to close the flow port.

[0006] In some embodiments, the open-close component further includes seat body, the seat body is connected with the inner wall of the clean water channel, the elastic piece is sleeved on the seat body, one end of the elastic piece is tightly fit with the seat body, the other end is fixedly connected with the stopper, and the stopper is pressed tightly on the end face.

[0007] In some embodiments, the edge of the stopper close to the side of the guide head is provided with round corner structure.

[0008] In some embodiments, the stopper includes first part and second part, the first part and the second part are connected, the first part is tightly fit with the end face, and the second part is externally sleeved with the elastic piece.

[0009] The seat body is provided with a movable cavity on the side opposite to the resistance piece, and the second part and the elastic piece are at least partially arranged inside the movable cavity;

[0010] The elastic piece is in abutment with the bottom surface of the movable cavity at one end and in abutment with the first part at the other end, and the second part can reciprocate radially along the movable cavity.

[0011] In some embodiments, a gap is formed between the seat body and the resistance piece, and the gap is in communication with the movable cavity;

[0012] The opening and closing assembly further comprises a sealing piece connected with the resistance piece and the seat body respectively, the sealing piece surrounds the outside of the gap and covers the gap.

[0013] In some embodiments, a limiting part is arranged on the opposite surface of the seat body and the resistance piece, and the limiting part is used to abut the resistance piece to limit the activity range of the resistance piece.

[0014] In some embodiments, a sealing ring is arranged on one of the end surface and the resistance piece, and the sealing ring is used to enhance the sealing property when the resistance piece abuts and fits the end surface.

[0015] In some embodiments, a notch is arranged on the outside of the seat body;

[0016] The sealing piece comprises a sealing part and a fixing rib, both of which are made of elastic material and have good shrinkability, the fixing rib is arranged on the edge of the sealing part, the fixing rib is tightly fitted on the notch, and the end of the sealing part away from the fixing rib is sealingly connected with the resistance piece.

[0017] The application further provides a filtering device comprising the reverse osmosis filter core.

[0018] Compared with the prior art, the reverse osmosis filter core has the beneficial effects that: the opening and closing assembly is arranged inside the water purification channel, the opening and closing assembly comprises a resistance piece and an elastic piece, the resistance piece is tightly fitted with the inner wall of the water purification channel under the action of the elastic piece to unidirectionally close the water purification channel, when the water pressure inside the water purification channel reaches a predetermined degree, the water flow can flush open the resistance piece to make the purified water flow out, if the water flow inside the water purification channel appears a reverse flow trend, the reverse water pressure will press the resistance piece and the inner wall of the water purification channel more tightly, thereby achieving the purpose of preventing reverse flow, without the need for additionally arranging a check valve, the structure inside the reverse osmosis membrane filter core is simpler, and the production cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1is a cross-sectional structure schematic diagram of a reverse osmosis membrane filter element of one embodiment of the present application;

[0020] Figure 2 is a working principle schematic diagram of an opening and closing assembly provided in one embodiment of the present application;

[0021] Figure 3 is Figure 2 is an enlarged schematic diagram of structure at A in the middle;

[0022] Figure 4 is a working principle schematic diagram of an opening and closing assembly provided in another embodiment of the present application;

[0023] Figure 5 is Figure 4 is an enlarged schematic diagram of structure at B in the middle.

[0024] 10, filter assembly; 101, inflow channel; 102, clean water channel; 103, waste water channel; 11, filter material; 12, sealing ring; 13, opening and closing assembly; 131, resisting piece; 01, first part; 011, round corner structure; 02, second part; 132, seat body; 03, movable cavity; 04, limiting part; 05, notch; 133, elastic piece; 134, sealing piece; 1341, sealing part; 1342, fixing rib; 14, guide head; 141, end face; 142, flow port; S, gap. DETAILED DESCRIPTION

[0025] In order for those skilled in the art to better understand the technical scheme of the present application, the present application will be described in detail below in combination with the drawings, and the description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present application.

[0026] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0027] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0028] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0030] The present invention will now be described in further detail with reference to the accompanying drawings.

[0031] like Figure 1 , Figure 2 The reverse osmosis filter element shown includes a filter assembly 10 and an opening / closing assembly 13. The filter assembly 10 is provided with an inflow channel 101, a clean water channel 102 and a wastewater channel 103. The inflow channel 101 is connected to the clean water channel 102 and the wastewater channel 103 respectively. In addition to the above structure, the filter assembly 10 is also provided with filter media 11 and a reverse osmosis membrane. During use, the water to be filtered enters the filter assembly 10 through the inflow channel 101. Part of the water enters the clean water channel 102 after being filtered by the filter media 11 and the reverse osmosis membrane, while the other part of the water flows into the wastewater channel 103.

[0032] Please see Figure 2 The opening and closing component 13 includes a stop member 131 and an elastic member 133. Both the stop member 131 and the elastic member 133 are disposed inside the water purification channel 102. The elastic member 133 can be specifically a spring. One end of the elastic member 133 is connected to the stop member 131 and presses the stop member 131 against the inner wall of the water purification channel 102 so that the water purification channel 102 is closed. When the water pressure on the side of the stop member 131 opposite to the water flow direction reaches a predetermined level, the stop member 131 separates from the inner wall of the water purification channel 102, and the elastic member 133 is compressed. At this time, the water purification channel 102 opens, and the purified water can flow out of the water purification channel 102. If the water flow inside the water purification channel 102 tends to flow back, the stop member 131 is subjected to pressure in the opposite direction of the water flow, which will make the stop member 131 press more tightly against the inner wall of the water purification channel 102, thereby sealing the water purification channel 102 to prevent water backflow. This can act as a one-way valve, so that the reverse osmosis filter element does not need to be equipped with an additional one-way valve, which simplifies the internal structure of the reverse osmosis filter element and also reduces the production cost.

[0033] In some implementations, such as Figure 2As shown, the water purification channel 102 is internally provided with a guide head 14, the edge of the guide head 14 is sealingly connected with the inner wall of the water purification channel 102, the middle part of the guide head 14 is provided with a flow port 142, the purified water in the inflow channel 101 flows through the flow port 142 from the guide head 14, the side of the guide head 14 away from the water flow direction is provided with an end face 141, and the elastic member 133 abuts against the end face 141 to seal the flow port 142. In actual application, the purified water is first collected on the side of the guide head 14 away from the end face 141 when flowing out, and when the water pressure on the side of the guide head 14 away from the end face 141 reaches a preset degree, the stop piece 131 slides away from the end face 141, so that the purified water can flow out of the water purification channel 102. If the purified water in the water purification channel 102 appears a reflux trend, the water pressure on the side of the guide head 14 away from the end face 141 is smaller than that on the side of the end face 141, and the stop piece 131 abuts against the end face 141 more tightly under the action of the water pressure, so that the purified water in the water purification channel 102 is prevented from flowing back, and the function of a one-way valve is achieved.

[0034] In summary, the opening and closing assembly 13 cooperates with the guide head 14 to achieve the function of a one-way valve, so that the reverse osmosis filter element does not need to be additionally provided with a one-way valve, the overall structure of the reverse osmosis filter element is simpler during installation and use, and the production cost of the reverse osmosis filter element is reduced.

[0035] In some embodiments, as shown in Figure 2 As shown, the opening and closing assembly 13 further includes a seat body 132 fixed on the inner wall of the water purification channel 102, and the elastic member 133 is sleeved on the seat body 132, one end of the elastic member 133 abuts against the seat body 132, and the other end is fixedly connected with the stop piece 131. The stop piece 131 abuts against the end face 141 under the action of the elastic member 133. Through the above design, the elastic member 133 can move along the radial direction of the seat body 132, and the position deviation of the elastic member 133 during the movement of abutting against the stop piece 131 can be avoided, so that the stop piece 131 and the end face 141 can always abut against each other at the most appropriate relative position, and the backflow of the purified water can be more stably and effectively prevented.

[0036] In some embodiments, as shown in Figure 2 As shown, the edge of the side of the stop piece 131 close to the guide head 14 is provided with a rounded structure 011. Through this design, the purified water in the water purification channel 102 can smoothly flow along the rounded structure 011 of the stop piece 131 during the flow process, the turbulent flow caused by the sudden change of the flow direction is avoided, the impact of the water flow on the components when the water flows out is reduced, the noise generated when the water flows out is reduced, and the user experience of the reverse osmosis filter element in actual application is improved.

[0037] In some embodiments, as shown in Figure 4 The abutment 131 includes a first part 01 and a second part 02, which are connected to each other. In actual application, the first part 01 and the second part 02 can be molded as a whole. The first part 01 is used to abut against the end face 141, and the second part 02 is used to cover the elastic member 133. In addition, the seat body 132 is provided with a movable cavity 03 on the side opposite to the abutment 131. The elastic member 133 is inserted into the movable cavity 03 together with the second part 02 after being covered by the second part 02. One end of the elastic member 133 abuts against the bottom surface of the movable cavity 03, and the other end abuts against the first part 01. Under the action of the elastic member 133, the abutment 131 can reciprocally and elastically slide along the radial direction of the movable cavity 03. Through the above design, the movable cavity 03 can limit the angle of the abutment 131, and can also protect the elastic member 133. The abutment 131 can better abut against the end face 141, and can more stably and effectively prevent the backflow of pure water.

[0038] In some embodiments, as shown in Figure 4 , Figure 5 A gap S is formed between the seat body 132 and the abutment 131. The gap S makes the movable cavity 03 and the pure water channel 102 inside be in a communication state. The pure water in the pure water channel 102 can enter the movable cavity 03 through the gap S, so that the elastic member 133 is soaked in the pure water. Long-term soaking may have adverse effects on the elastic member 133. Therefore, in order to avoid the above-mentioned adverse situation, please refer to Figure 4 The opening and closing assembly 13 further includes a sealing member 134, which is sealingly connected with the abutment 131 and the seat body 132, and surrounds and covers the gap S so as to completely cover the gap S. A sealed space is formed between the abutment 131, the sealing member 134 and the seat body 132. The gap S is isolated from the water flow in the pure water channel 102, effectively preventing the pure water in the pure water channel 102 from entering the movable cavity 03 through the gap S. The elastic member 133 in the movable cavity 03 can be prevented from being soaked in water, prolonging the service life of the elastic member 133, and facilitating the opening and closing assembly 13 to better function as a check valve.

[0039] In some embodiments, as shown in Figure 4 , Figure 5As shown, the outer side surface of the seat body 132 is provided with an annular notch 05, and the sealing member 134 includes a sealing portion 1341 and a fixing rib 1342. The fixing rib 1342 and the sealing portion 1341 can be made of elastic materials such as rubber and silica gel, and have very good elasticity. The fixing rib 1342 is tightly attached to the inside of the notch 05, and the fixing rib 1342 is integrally formed with the sealing portion 1341 and located at the edge of the sealing portion 1341. In this way, the sealing property of the closed sealing space formed between the resisting member 131, the sealing member 134 and the seat body 132 can be ensured, and the components of the opening and closing assembly 13 can be easily assembled and disassembled, which facilitates production, processing and replacement.

[0040] In some embodiments, as shown in Figure 2 , Figure 3 The seat body 132 and the first part 01 are provided with a limiting portion 04 on the opposite surface. The limiting portion 04 can abut against the first part 01 to limit the movement range of the resisting member 131. In actual application, when the water flow pushes the resisting member 131 away, the resisting member 131 moves away from the end surface 141. During the movement of the resisting member 131, the elastic member 133 is compressed. When the resisting member 131 moves to a predetermined position, the limiting portion 04 abuts against the resisting member 131, so that the resisting member 131 cannot continue to move away from the end surface 141. In this way, the elastic member 133 is prevented from being excessively compressed and damaged, and the service life of the elastic member 133 is prolonged, which is beneficial to the opening and closing assembly 13 to better play the role of a one-way valve.

[0041] In some embodiments, as shown in Figure 4 The end surface 141 is provided with a sealing ring 12. It can be understood that the sealing ring 12 can also be arranged on the opposite surface of the resisting member 131 and the end surface 141. The sealing ring 12 can enhance the sealing property of the resisting member 131 when abutting against the end surface 141, and more effectively prevent the backflow of pure water in the pure water channel 102, which is beneficial to the opening and closing assembly 13 to better play the role of a one-way valve.

[0042] The application also provides a filtering device, which comprises the reverse osmosis filter element.

[0043] In the description of the utility model, still need to explain, unless another explicit provision and limitation, term " set ", " install ", " link ", " connect " should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can pass through intermediate medium indirectly connected, can be two element inside the intercommunication.For ordinary skilled person in the art, can understand the concrete meaning of above-mentioned term in the utility model with specific circumstances.

[0044] It should be noted that in this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Additionally, unless otherwise indicated, the terms "one" and "the" are open-ended, i.e., to "one or more" and "one or the other or both" respectively.

[0045] While embodiments of the present application have been shown and described with reference to particular embodiments thereof, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the application. The scope of the application is thus defined by the appended claims and their equivalents.

Claims

1. A reverse osmosis filter cartridge, characterized by, The utility model relates to a filter assembly (10) is provided with inflow channel (101), pure water channel (102) and waste water channel (103) inside, inflow channel (101) is communicated with pure water channel (102) and waste water channel (103) respectively, The opening and closing assembly (13) includes a blocking piece (131) and a resilient piece (133), the blocking piece (131) and the resilient piece (133) are arranged inside the pure water channel (102), the resilient piece (133) is connected with the blocking piece (131), so that the blocking piece (131) is tightly fitted with the inner wall of the pure water channel (102) to unidirectionally close the pure water channel (102), The opening and closing assembly further includes a seat body (132), the seat body (132) is connected with the inner wall of the pure water channel (102), the seat body (132) is oppositely arranged with the blocking piece (131), the resilient piece (133) is a spring and is sleeved on the seat body (132), the elastic force direction of the resilient piece (133) is consistent with the relative direction of the seat body (132) and the blocking piece (131), The opening and closing assembly (13) further includes a sealing piece (134), the sealing piece (134) is connected with the blocking piece (131) and the seat body (132) respectively to seal the resilient piece (133), so that the resilient piece (133) is isolated from water flow, The seat body (132) and the blocking piece (131) form a gap (S) therebetween, the spring is arranged inside the gap (S), the sealing piece (134) is arranged around the spring, the sealing piece (134) is sealingly connected with the blocking piece (131) and the seat body (132) respectively and wraps the gap (S) to completely cover the gap (S). The pure water channel (102) is provided with a guide head (14) inside, the edge of the guide head (14) is sealingly connected with the inner wall of the pure water channel (102), the middle part of the guide head (14) is provided with a flow port (142), the side of the guide head (14) away from the water flow direction is provided with an end face (141), the resilient piece (133) abuts against the blocking piece (131), so that the blocking piece (131) abuts against the end face (141) to close the flow port (142).

2. The reverse osmosis cartridge of claim 1, wherein, The edge of the blocking piece (131) close to the side of the guide head (14) is provided with a rounded structure (011).

3. The reverse osmosis cartridge of claim 2, wherein, The blocking piece (131) includes a first part (01) and a second part (02), the first part (01) and the second part (02) are connected, the first part (01) is tightly fitted with the end face (141), the second part (02) is sleeved with the resilient piece (133) on the outer side surface; 4. The reverse osmosis cartridge of claim 2, wherein, The seat body (132) is provided with a movable cavity (03) on the opposite side of the blocking piece (131), the second part (02) and the resilient piece (133) are at least partially arranged inside the movable cavity (03). ​ One end of the elastic member (133) is in abutment with the bottom surface of the movable cavity (03), and the other end is in abutment with the first part (01), and the second part (02) can reciprocate along the radial direction of the movable cavity (03).

5. The reverse osmosis cartridge of claim 4, wherein, The gap (S) is in communication with the movable cavity (03); The sealing member (134) surrounds the outside of the gap (S) and covers the gap (S).

6. The reverse osmosis cartridge of claim 5, wherein, The seat body (132) is provided with a notch (05) on the outside; The sealing member (134) includes a sealing part (1341) and a fixing rib (1342), both of which are made of elastic material and have good shrinkability, the fixing rib (1342) is arranged at the edge of the sealing part (1341), the fixing rib (1342) is tightly attached to the notch (05), and one end of the sealing part (1341) away from the fixing rib (1342) is sealingly connected with the stop piece (131).

7. The reverse osmosis cartridge of claim 4, wherein, The opposite surfaces of the seat body (132) and the stop piece (131) are provided with a limiting part (04), which is used to abut the stop piece (131) to limit the movement range of the stop piece (131).

8. The reverse osmosis cartridge of claim 4, wherein, One of the end face (141) and the stop piece (131) is provided with a sealing ring (12), which is used to enhance the sealing property of the stop piece (131) and the end face (141) when they are tightly attached.

9. A filter device, characterized in that The filter device comprises the reverse osmosis filter element in any one of claims 1 to 8.

Images