Self-cleaning flush valve

Abstract

The utility model discloses a self -cleaning type flush valve, include: valve body, the valve body has a water inlet and a water outlet, and the valve body forms a containing space in, and the water inlet and the water outlet all are with containing space intercommunication arrangement, waste water needle, waste water needle sets up in containing space, and one end of waste water needle is close to water inlet setting, and the other end of waste water needle is close to water outlet setting, wherein, one end of waste water needle's inner contour is greater than the other end of waste water needle's inner contour. Through the application of the utility model, provide a flush valve suitable for reverse osmosis water purifier, can realize the internal cleaning of waste water needle when water purifier water, realize the internal and external cleaning of waste water needle when flushing, thereby better complete the cleaning of waste water needle, prevent the problem of plugging from happening, simultaneously need not additional power intervention, reduced use cost, and, under the non -use state, can integrate check function at the water outlet, to effectively prevent the entry of peculiar smell and foreign matter.

Description

Technical Field

[0001] This utility model relates to the field of water purifier technology, and in particular to a self-cleaning flushing valve. Background Technology

[0002] Currently, with increasing demands for higher water quality, reverse osmosis (RO) water purifiers are becoming a popular choice. Existing technologies utilize flushing pipes and valves to periodically flush the filtration components. However, this typically only removes impurities from the RO membrane surface and fails to clean impurities from the wastewater needle in the flushing valve. Therefore, the biggest drawback of these purifiers is the susceptibility to clogging in the wastewater needle of the flushing valve, directly impacting filtration efficiency, reducing RO membrane lifespan, decreasing desalination rate, and significantly affecting consumer drinking water safety and user experience. Utility Model Content

[0003] In view of this, and to solve the above problems, the purpose of this utility model is to provide a self-cleaning flushing valve, comprising:

[0004] The valve body has an inlet and an outlet, and a receiving space is formed inside the valve body. The inlet and the outlet are both connected to the receiving space.

[0005] Wastewater needle, wherein the wastewater needle is disposed within the accommodating space, one end of the wastewater needle is disposed near the inlet, and the other end of the wastewater needle is disposed near the outlet;

[0006] The inner contour of one end of the wastewater needle is larger than the inner contour of the other end of the wastewater needle.

[0007] In another preferred embodiment, the device further includes a unclog guide rod and a reset assembly, the reset assembly being disposed within the accommodating space, one end of the unclog guide rod being connected to the reset assembly, and the other end of the unclog guide rod being used to open or close the other end of the wastewater needle.

[0008] In another preferred embodiment, the reset assembly includes a sleeve and a spring, the sleeve being disposed within the accommodating space, one end of the unblocking guide rod being movably disposed inside the sleeve, and the spring being connected between one end of the unblocking guide rod and the interior of the sleeve.

[0009] In another preferred embodiment, the sleeve is provided with a connecting port, which is connected to the water outlet.

[0010] In another preferred embodiment, the inner wall of the sleeve is formed with a stepped surface, and a sealing ring is provided on the outer side of one end of the unblocking guide rod, the sealing ring matching the stepped surface.

[0011] In another preferred embodiment, the device further includes: an inner shell disposed inside the accommodating space, one end of the inner shell being connected to the water outlet, the reset assembly being disposed inside one end of the inner shell, and the other end of the wastewater needle passing through the other end of the inner shell and extending inward.

[0012] In another preferred embodiment, the device further includes a movable component and a sealing component. The sealing component is disposed inside the accommodating space, which is divided into an upper space and a lower space by the sealing component. The two ends of the lower space are respectively connected to the water inlet and the water outlet. The sealing component has a first hole and a second hole through it. The movable component is used to open or close the second hole. The first hole is connected to the water inlet, and the second hole is connected to the interior of the other end of the inner shell.

[0013] In another preferred embodiment, the movable component includes a movable rod and a driving device, the movable rod being movably disposed within the upper space, and the driving device being used to drive the movement of the movable rod.

[0014] In another preferred embodiment, the inner shell includes a vertically connected vertical portion and a horizontal portion, the upper end of the vertical portion being disposed near the sealing assembly, the upper end of the vertical portion communicating with the second hole, and the interior of the horizontal portion communicating with the water outlet.

[0015] In another preferred embodiment, the axial projection of the second hole overlaps with the other end of the wastewater needle.

[0016] Because this utility model adopts the above-mentioned technical solution, it has the following positive effects compared with the prior art:

[0017] By applying this utility model, a flushing valve suitable for reverse osmosis water purifiers is provided. It can clean the inside of the wastewater needle during water production and clean both the inside and outside of the wastewater needle simultaneously during flushing, thus effectively cleaning the wastewater needle and preventing clogging. At the same time, no additional power is required, reducing the cost of use. Furthermore, when not in use, a backflow preventer function can be integrated at the outlet to effectively prevent the entry of odors and foreign objects. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a self-cleaning flushing valve according to the present invention.

[0019] Figure 2 This is a partial schematic diagram of a self-cleaning flushing valve according to the present invention.

[0020] In the attached image:

[0021] 1. Valve body; 2. Inlet; 3. Outlet; 4. Wastewater needle; 5. Unblocking guide rod; 6. Reset assembly; 7. Sleeve; 8. Spring; 9. Connecting port; 10. Stepped surface; 11. Sealing ring; 12. Inner shell; 13. Moving assembly; 14. Sealing assembly; 15. Upper space; 16. Lower space; 17. First hole; 18. Second hole; 19. Vertical part; 20. Horizontal part; 21. Bushing; 22. Seal; 23. Crosshead structure; 24. Moving rod; 25. Drive device. Detailed Implementation

[0022] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front", "back", "horizontal", and "vertical" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] It should be noted that the terms "horizontal" and "vertical" in this utility model are used to describe approximate positional relationships, and not strictly "horizontal plane" or "vertical plane".

[0025] like Figure 1 and Figure 2 The diagram illustrates a preferred embodiment of a self-cleaning flushing valve, comprising: a valve body 1 having an inlet 2 and an outlet 3, with a receiving space formed within the valve body 1, the inlet 2 and outlet 3 both communicating with the receiving space; and a wastewater needle 4 disposed within the receiving space, one end of the wastewater needle 4 positioned near the inlet 2 and the other end positioned near the outlet 3; wherein the inner contour of one end of the wastewater needle 4 is larger than the inner contour of the other end. Furthermore, by arranging the wastewater needle 4 in a manner that is larger at the front and smaller at the back from the inlet 2 to the outlet 3, i.e., one end of the wastewater needle 4 is flared, the Venturi effect is utilized to increase the fluid velocity, thereby enabling the fluid to flush away residues inside the wastewater needle 4.

[0026] Furthermore, in a preferred embodiment, it further includes: a dredging guide rod 5 and a reset assembly 6. The reset assembly 6 is disposed within the accommodating space. One end of the dredging guide rod 5 is connected to the reset assembly 6, and the other end of the dredging guide rod 5 is used to open or close the other end of the wastewater needle 4. Further, driven by the reset assembly 6, the axial movement of the dredging guide rod 5 causes its other end to extend into the interior of the other end of the wastewater needle 4, thereby closing the wastewater needle 4. And when the force provided by the water flow within the wastewater needle 4 is sufficiently large, the dredging guide rod 5 overcomes the obstruction of the reset assembly 6 and retracts outward, thereby opening the other end of the wastewater needle 4.

[0027] Furthermore, as a preferred embodiment, the other end of the unblocking guide rod 5 extends along the axis to form a crosshead structure 23, which is arranged in a cross shape in the radial cross section. Furthermore, the arrangement of the crosshead structure 23 ensures that a sufficient gap is formed between its circumference and the inner wall of the other end of the wastewater needle 4 to improve water flow efficiency.

[0028] Furthermore, in a preferred embodiment, the reset assembly 6 includes a sleeve 7 and a spring 8. The sleeve 7 is disposed within the accommodating space, and one end of the unblocking guide rod 5 is movably disposed inside the sleeve 7. The spring 8 connects the one end of the unblocking guide rod 5 and the interior of the sleeve 7. Further, the sleeve 7 is configured to limit the axial movement of the unblocking guide rod 5, and the spring 8 provides the unblocking guide rod 5 with its own elastic force, giving it a tendency to move axially towards the wastewater needle 4.

[0029] Furthermore, in a preferred embodiment, the sleeve 7 is provided with a connecting port 9, which is connected to the outlet 3. Further, by appropriately positioning the connecting port 9, after the unblocking guide rod 5 opens the wastewater needle 4, the connecting port 9 inside the sleeve 7 will also open, allowing water to flow further into the outlet 3 after passing through the sleeve 7. More specifically, one end of the unblocking guide rod 5 is movably positioned in a first position and a second position, with the first position being closer to the wastewater needle 4 than the second position. When one end of the unblocking guide rod 5 is in the first position, the other end of the unblocking guide rod 5 extends into the wastewater needle 4, and one end of the unblocking guide rod 5 closes the outlet 3. When one end of the unblocking guide rod 5 is in the second position, the other end of the unblocking guide rod 5 disengages from the wastewater needle 4, and one end of the unblocking guide rod 5 opens the outlet 3.

[0030] Furthermore, as a preferred embodiment, the outer contour dimension of one end of the unblocking guide rod 5 is larger than the outer contour dimension of the other end of the unblocking guide rod 5.

[0031] Furthermore, as a preferred embodiment, the connecting port 9 is preferably provided radially through the sleeve 7, and the connecting port 9 is preferably provided at one end of the sleeve 7 near the wastewater needle 4.

[0032] Furthermore, in a preferred embodiment, the inner wall of the sleeve 7 has a stepped surface 10, and a sealing ring 11 is provided on the outer side of one end of the unblocking guide rod 5, the sealing ring 11 matching the stepped surface 10. Furthermore, when one end of the unblocking guide rod 5 is in the aforementioned first position, the sealing ring 11 contacts the stepped surface 10 in the axial direction of the unblocking guide rod 5, ensuring that the interior of the sleeve 7 is relatively sealed at this time.

[0033] Furthermore, as a preferred embodiment, an annular groove is provided on the outer side of one end of the unblocking guide rod 5, and the sealing ring 11 is fitted into the annular groove.

[0034] Furthermore, as a preferred embodiment, the stepped surface 10 is formed by an inward protrusion of the inner wall of the sleeve 7.

[0035] Furthermore, as a preferred embodiment, the sleeve 7 has a through-hole at one end near the wastewater needle 4, through which the unblocking guide rod 5 passes. The inner contour of the through-hole is larger than the outer contour of the other end of the unblocking guide rod 5, but smaller than the outer contour of one end of the unblocking guide rod 5.

[0036] Furthermore, as a preferred embodiment, the radial section of the sealing ring 11 preferably has a circular outer contour feature, and thus the cross section of the step surface 10 is preferably arc-shaped, so that a better seal can be formed between the step surface 10 and the sealing ring 11.

[0037] Furthermore, as a preferred embodiment, it also includes: an inner shell 12, which is disposed inside the accommodating space, one end of the inner shell 12 is connected to the water outlet 3, the reset component 6 is disposed inside one end of the inner shell 12, and the other end of the wastewater needle 4 passes through the other end of the inner shell 12 and extends inward.

[0038] Furthermore, as a preferred embodiment, it also includes: a movable component 13 and a sealing component 14. The sealing component 14 is disposed inside the accommodating space, and the accommodating space is divided into an upper space 15 and a lower space 16 by the sealing component 14. The two ends of the lower space 16 are respectively connected to the inlet 2 and the outlet 3. A first hole 17 and a second hole 18 are provided through the sealing component 14. The movable component 13 is used to open or close the second hole 18. The first hole 17 is connected to the inlet 2, and the second hole 18 is connected to the interior of the other end of the inner shell 12.

[0039] Furthermore, as a preferred embodiment, the sealing component 14 is preferably a sealing gasket extending in a horizontal direction.

[0040] Furthermore, in a preferred embodiment, the axial projection of the second hole 18 overlaps with the other end of the wastewater needle 4. This overlapping arrangement allows the water flow from the second hole 18 to directly impact the outer surface of the other end of the wastewater needle 4.

[0041] Furthermore, in a preferred embodiment, the movable component 13 includes a movable rod 24 and a driving device 25. The movable rod 24 is movably disposed within the upper space 15, and the driving device 25 is used to drive the movement of the movable rod 24. Further, the lower end of the movable rod 24 is positioned directly opposite the second hole 18, and the lower end of the movable rod 24 forms an end face for closing the second hole 18.

[0042] Furthermore, as a preferred embodiment, the driving device 25 is preferably a coil that can generate a magnetic field when energized to drive the movable rod 24 to move upward.

[0043] Furthermore, as a preferred embodiment, the movable component 13 further includes: a bushing 21, which is fixedly disposed within the upper space 15; a movable rod 24 is disposed on the inner side of the bushing 21 and is movable up and down; and a coil is preferably disposed on the outer side of the bushing 21.

[0044] Furthermore, as a preferred embodiment, the movable component 13 also includes an elastic element for providing a downward movement tendency to the movable rod 24 by means of elasticity.

[0045] Furthermore, in a preferred embodiment, the inner shell 12 includes a vertically connected vertical portion 19 and a horizontal portion 20. The upper end of the vertical portion 19 is disposed near the sealing assembly 14 and is connected to the second hole 18. The interior of the horizontal portion 20 is connected to the water outlet 3.

[0046] Furthermore, in a preferred embodiment, the sleeve 7 is fixedly disposed inside one end of the inner shell 12. More specifically, the sleeve 7 is preferably fixed to the inner side of the end of the horizontal portion 20 of the inner shell 12 away from the vertical portion 19.

[0047] Furthermore, as a preferred embodiment, a gap may be formed between the outer wall of the sleeve 7 and the inner wall of the inner shell 12, the gap extending axially until one end communicates with the water outlet 3, and the communication port 9 is configured to communicate with the gap.

[0048] Furthermore, as a preferred embodiment, a sealing element 22 is provided on the outer side of the sleeve 7 near the wastewater needle 4, and the sealing element 22 is in sealing contact with the inner wall of the horizontal part 20 near the wastewater needle 4.

[0049] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model.

[0050] Based on the above, this utility model also has the following embodiments:

[0051] In a further embodiment of this utility model, the self-cleaning flushing valve is preferably configured in a water purification system to cooperate in realizing the corresponding water production process and flushing process.

[0052] In a further embodiment of this utility model, during the water purification process of the water purification system, the wastewater generated by the system enters through the inlet 2 of the self-cleaning flushing valve. Part of the wastewater flows through the first hole 17 of the sealing assembly 14 into the upper space 15. At this time, the movable assembly 13, under the combined action of the movable rod 24 and the elastic element, blocks the second hole 18. The wastewater in the upper space 15 cannot continue through the second hole 18 after passing through the first hole 17 to enter the outlet 3. The wastewater can only flow away through the wastewater needle 4. Due to the Venturi effect of the wastewater needle 4, the wastewater inside can clean the residual impurities on the needle 4. Simultaneously, the wastewater flow will push open the unblocking guide rod 5, and the wastewater will be discharged from the wastewater outlet. After water purification is completed, the wastewater stops flowing out, and the unblocking guide rod 5 extends into the wastewater needle 4 under the action of the spring 8. Furthermore, each time the consumer performs a water purification process, the wastewater needle 4 is physically unblocked, effectively preventing the accumulation of scale and impurities.

[0053] In a further embodiment of this utility model, during the water production process described above, the upper space 15 and the lower space 16 form a communicating vessel through the first hole 17. The pressure of the upper space 15 and the lower space 16 are consistent. Since F = P * S, the effective area of ​​the upper space 15 is larger than that of the lower space 16 (the vertical part 19 of the inner shell 12 of the lower space 16 is connected to the outlet 3 and has no pressure). Therefore, the pressure exerted by the upper space 15 downward to the sealing component 14 is greater than the pressure exerted by the lower space 16 upward to the sealing component 14. The sealing component 14 and the upper end of the vertical part 19 of the inner shell 12 remain sealed and closed.

[0054] In a further embodiment of this utility model, during the flushing process of the water purification system, the self-cleaning flushing valve is energized for 30 seconds at regular intervals (preferably every 12 hours). The coil is energized to form a magnetic field, which pulls the movable rod 24 upward, opening the second hole 18. Wastewater can then flow from the second hole 18 to the outlet 3. The upper space 15 and the lower space 16 are connected, and wastewater can directly flow from the inlet 2 through the second hole 18 and the wastewater needle 4 to the outlet 3 simultaneously. At this time, the outer surface and the interior of the wastewater needle 4 are simultaneously flushed by the water flow. The unblocking guide rod 5 is pushed open to the right under the action of the water flow, thereby completing a complete cleaning of the wastewater needle 4.

[0055] In a further embodiment of this utility model, during the above-mentioned rinsing process, since the upper space 15 and the lower space 16 are connected through the second hole 18, the pressure exerted by the upper space 15 on the sealing component 14 is equal to or slightly less than the pressure exerted by the lower space 16 on the sealing component 14. The sealing component 14 is allowed to deform and no longer form a sealing function. Therefore, the water flow is also allowed to enter through the inlet 2, pass through the lower space 16 on the outside of the inner shell 12, and directly enter the interior of the inner shell 12 through the upper end position near the upper space 15 and be discharged.

[0056] In a further embodiment of this utility model, after the water purification or flushing process is completed, the unblocking guide rod 5 moves to the left under the action of the spring 8 to close the wastewater needle 4, and under the sealing cooperation of the sealing ring 11 and the sleeve 7, it also closes the outlet 3, thereby forming a check valve principle. Furthermore, since the outlet 3 of this self-cleaning flushing valve is generally connected to the sewer, it can effectively prevent sewer odors and other foreign objects from entering the interior of the above-mentioned water purification system.

[0057] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A self-cleaning flushing valve, characterized in that, include: The valve body has an inlet and an outlet, and a receiving space is formed inside the valve body. The inlet and the outlet are both connected to the receiving space. Wastewater needle, wherein the wastewater needle is disposed within the accommodating space, one end of the wastewater needle is disposed near the inlet, and the other end of the wastewater needle is disposed near the outlet; The inner contour of one end of the wastewater needle is larger than the inner contour of the other end of the wastewater needle.

2. The self-cleaning flushing valve according to claim 1, characterized in that, Also includes: The unblocking guide rod and the reset assembly are provided. The reset assembly is disposed within the accommodating space. One end of the unblocking guide rod is connected to the reset assembly, and the other end of the unblocking guide rod is used to open or close the other end of the wastewater needle.

3. The self-cleaning flushing valve according to claim 2, characterized in that, The reset assembly includes a sleeve and a spring. The sleeve is disposed within the accommodating space. One end of the unblocking guide rod is movably disposed inside the sleeve. The spring is connected between one end of the unblocking guide rod and the inside of the sleeve.

4. The self-cleaning flushing valve according to claim 3, characterized in that, The sleeve has a connecting port, which is connected to the water outlet.

5. The self-cleaning flushing valve according to claim 4, characterized in that, The inner wall of the sleeve has a stepped surface, and a sealing ring is provided on the outer side of one end of the unblocking guide rod, the sealing ring matching the stepped surface.

6. The self-cleaning flushing valve according to claim 2, characterized in that, Also includes: The inner shell is disposed inside the accommodating space. One end of the inner shell is connected to the water outlet. The reset component is disposed inside one end of the inner shell. The other end of the wastewater needle passes through the other end of the inner shell and extends inward.

7. The self-cleaning flushing valve according to claim 6, characterized in that, Also includes: The accommodating space includes a movable component and a sealing component. The sealing component is disposed inside the accommodating space, which is divided into an upper space and a lower space by the sealing component. The two ends of the lower space are respectively connected to the water inlet and the water outlet. The sealing component has a first hole and a second hole through it. The movable component is used to open or close the second hole. The first hole is connected to the water inlet, and the second hole is connected to the interior of the other end of the inner shell.

8. The self-cleaning flushing valve according to claim 7, characterized in that, The movable component includes a movable rod and a driving device. The movable rod is movably disposed within the upper space, and the driving device is used to drive the movement of the movable rod.

9. The self-cleaning flushing valve according to claim 7, characterized in that, The inner shell includes a vertically connected vertical portion and a horizontal portion. The upper end of the vertical portion is disposed near the sealing assembly and is connected to the second hole. The interior of the horizontal portion is connected to the water outlet.

10. The self-cleaning flushing valve according to claim 7, characterized in that, The projection of the second hole along the axial direction overlaps with the other end of the wastewater needle.

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