Antifouling one-way valve

Abstract

The utility model relates to an antifouling one-way valve which comprises a valve assembly. The valve assembly comprises an inlet end, an outlet end and a control valve used for controlling water flow change between the inlet end and the outlet end. The device further comprises an anti-fouling assembly. The anti-fouling assembly comprises an anti-fouling assembly carrier, a filter screen, a one-way valve element and an elastic piece. The antifouling assembly carrier is sequentially provided with an antifouling cavity, a one-way valve hole and a one-way valve cavity. The one-way valve cavity communicates with the inlet end; the filter screen is arranged in the antifouling cavity and completely surrounds the one-way valve hole; the two ends of the elastic piece are connected with the one-way valve element and the antifouling assembly carrier correspondingly, so that the one-way valve element directly or indirectly completely shields the one-way valve hole and has the tendency to be close to the filter screen. The utility model has the effects that water output from the outlet end is clean so as to realize pollution prevention, and water leakage and the like caused by complete blockage of the filter screen can be delayed or eliminated.

Description

Technical Field

[0001] The utility model relates to the technical field of one-way valves, in particular to an anti-pollution one-way valve. Background Art

[0002] In order to prevent impurities in the water flow from passing through the traditional valve, a filter is usually set at the inlet or outlet of the valve, and the impurities in the water are filtered through the filter.

[0003] However, after long-term use of traditional valves, the accumulation of impurities on the filter may clog the filter. In addition, the sealing performance of traditional valves also has room for further improvement. Utility Model Content

[0004] One purpose of the utility model is to solve or alleviate the above technical problems.

[0005] The means adopted by the utility model are an anti-fouling one-way valve, which includes a valve assembly; the valve assembly includes an inlet end, an outlet end and a control valve for controlling the change of water flow between the inlet end and the outlet end; and also includes an anti-fouling assembly; the anti-fouling assembly includes an anti-fouling assembly carrier, a filter screen, a one-way valve core and an elastic member; the anti-fouling assembly carrier is sequentially provided with an anti-fouling cavity, a one-way valve hole and a one-way valve cavity; the one-way valve cavity is connected to the inlet end; the filter screen is arranged in the anti-fouling cavity and completely surrounds the one-way valve hole; the one-way valve core is arranged in the one-way valve cavity, and both ends of the elastic member are respectively connected to the one-way valve core and the anti-fouling assembly carrier so that the one-way valve core directly or indirectly completely blocks the one-way valve hole and has a tendency to approach the filter screen.

[0006] The utility model has the following effects: the water outputted from the outlet end is relatively clean and anti-fouling is achieved, and water leakage caused by complete blockage of the filter screen can be delayed or eliminated.

[0007] According to a further technical solution, the filter screen includes a main filter portion, which is generally cylindrical with one end open. The open end of the main filter portion surrounds the one-way valve hole, so that a gap exists between the side wall of the main filter portion and the inner wall of the anti-fouling cavity.

[0008] While increasing the filtration area of ​​the filter, it can also prevent impurities from completely clogging the filter after long-term use.

[0009] According to a further technical solution, the main filter part is cylindrical with one end open, and the other end of the main filter part is hemispherical as a whole.

[0010] According to a further technical solution, one end of the main filter opening extends obliquely away from the one-way valve hole to form a resilient check portion, the cross-section of the anti-fouling cavity is the same, and one end of the check portion abuts against the inner wall of the anti-fouling cavity.

[0011] Facilitates assembly of antifouling components.

[0012] According to a further technical solution, the anti-fouling component also includes a guide member arranged in the one-way valve cavity, the guide member includes a guide platform provided with a guide hole; the one-way valve core includes a sealing portion and a guide column snugly inserted into the guide hole, and the sealing portion is located between the guide platform and the one-way valve hole.

[0013] The moving path of the sealing portion can be ensured to be stable, thereby ensuring the sealing performance of the one-way valve hole.

[0014] According to a further technical solution, the guide member also includes a connecting arm and a fixing ring; the two ends of the connecting arm are fixedly connected to the fixing ring and the guide platform respectively, the diameter of the fixing ring is larger than the diameter of the guide platform, the elastic member is a spring and the two ends are respectively against the sealing part and the fixing ring.

[0015] Facilitates assembly of antifouling components.

[0016] According to a further technical solution, the sealing portion is fixed with an elastic member cone, the elastic member is a conical spring and the end with a smaller diameter is snugly mounted on the elastic member cone, and the end with a larger diameter of the elastic member is against or close to the inner wall of the one-way valve cavity.

[0017] The moving path of the sealing portion can be ensured to be stable, thereby ensuring the sealing performance of the one-way valve hole.

[0018] According to a further technical solution, the one-way valve cavity is provided with a retaining ring groove, in which a retaining ring is arranged.

[0019] It is convenient to fix the guide piece in the one-way valve cavity.

[0020] According to a further technical solution, the sealing portion is disc-shaped and extends outward to form at least three centering protrusions.

[0021] The moving path of the sealing portion can be ensured to be stable, thereby ensuring the sealing performance of the one-way valve hole.

[0022] According to a further technical solution, the anti-fouling component also includes a flexible pad provided with a through hole, the sealing part is fixed with a flexible pad fixing part, the middle part of the flexible pad fixing part passes through the through hole of the flexible pad, so that the sealing part and one end of the flexible pad fixing part clamp the flexible pad, the flexible pad completely covers the one-way valve hole, and one end of the flexible pad fixing part has a part extending into the one-way valve hole.

[0023] While ensuring the sealing performance of the sealing portion, the flow rate of the reverse water flow pulse can be increased to improve the effect of delaying or eliminating complete clogging of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic side view of a part of the anti-fouling one-way valve of the first embodiment in half section.

[0025] Figure 2 1 is a half-section schematic diagram of the anti-fouling component 2 of the first embodiment.

[0026] Figure 3 1 is a schematic side view of the anti-fouling component carrier 21 of the first embodiment.

[0027] Figure 4 It is a side view schematic diagram of the one-way valve core 23 of the first embodiment; line LINE1 represents the boundary of the one-way valve hole 214; line LINE2 represents the boundary of the flexible pad 232; line LINE3 represents the boundary of the one-way valve cavity 213.

[0028] Figure 5 1 is a schematic side view of the guide member 25 of the first embodiment.

[0029] Figure 6 It is a schematic side view of a part of the anti-fouling one-way valve of the second embodiment.

[0030] Designate the drawings in the specification Figure 2 Attached is the abstract.

[0031] Line 1 LINE1; Line 2 LINE2; Line 3 LINE3; Valve assembly 1; Inlet end 11; Outlet end 12; Control valve 13; Anti-fouling assembly 2; Anti-fouling assembly carrier 21; Anti-fouling cavity 212; One-way valve cavity 213; One-way valve hole 214; Mounting portion 219; Filter screen 22; Main filter portion 221; Check portion 222; One-way valve core 23; Sealing portion 231; Flexible pad 232; Flexible pad fixing portion 233; Centering protrusion 234; Water outlet 235; Guide column 236; Elastic member 24; Elastic member cone 241; Guide member 25; Guide hole 251; Guide table 252; Connecting arm 253; Fixing ring 254; Circlip 26; Circlip groove 261; Conversion nozzle 3. DETAILED DESCRIPTION

[0032] The specific implementation of the utility model will be described below with reference to the accompanying drawings of the specification.

[0033] The anti-fouling one-way valve of the first embodiment includes a valve assembly 1; the valve assembly 1 includes an inlet end 11, an outlet end 12, and a control valve 13 for controlling the change of water flow between the inlet end 11 and the outlet end 12. For example, the control valve 13 is a solenoid valve, which is opened and closed to achieve the maximum or zero water flow between the inlet end 11 and the outlet end 12.

[0034] The anti-fouling one-way valve of the first embodiment further includes an anti-fouling component 2 .

[0035] The anti-fouling component 2 includes an anti-fouling component carrier 21 , a filter screen 22 , a one-way valve core 23 and an elastic member 24 .

[0036] The anti-fouling component carrier 21 is provided with an anti-fouling chamber 212, a one-way valve hole 214 and a one-way valve chamber 213 in sequence. It is easy to understand that the anti-fouling chamber 212 and the one-way valve chamber 213 are connected through the one-way valve hole 214. The one-way valve chamber 213 is connected with the inlet end 11. For example, the anti-fouling component carrier 21 is provided with a mounting portion 219, and a screw passes through the mounting portion 219 and is fixedly connected with the valve component 1, so that the one-way valve chamber 213 is connected with the inlet end 11.

[0037] The filter screen 22 is disposed in the anti-fouling cavity 212 and completely surrounds the one-way valve hole 214. It is easy to understand that the filter screen 22 is provided with a plurality of filter holes (not shown in the drawings), and the water flow must pass through the filter holes of the filter screen 22 to pass through the one-way valve hole 214 so that the filter screen 22 completely surrounds the one-way valve hole 214.

[0038] The one-way valve core 23 is disposed in the one-way valve cavity 213, and both ends of the elastic member 24 are respectively connected to the one-way valve core 23 and the anti-fouling component carrier 21, so that the one-way valve core 23 directly or indirectly completely blocks the one-way valve hole 214 and has a tendency to approach the filter screen 22. For example, the one-way valve core 23 is offset against the anti-fouling cavity 212 and the partition wall between the one-way valve cavity 213 (not shown in the drawings), and the water flow cannot pass through the one-way valve hole 214, so that the one-way valve core 23 directly and completely blocks the one-way valve hole 214.

[0039] The working principle is that when the water flow between the inlet end 11 and the outlet end 12 is increased by controlling the control valve 13, the water flows into the anti-fouling chamber 212 and then flows through the filter screen 22, the one-way valve hole 214, the one-way valve chamber 213, the inlet end 11 in sequence, and then flows from the outlet end 12 into the next water supply pipe. For example, the outlet end 12 of the anti-fouling one-way valve of the first embodiment is installed on a water dispenser (not shown in the drawings) to supply water to the water supply pipe of the water dispenser. In this process, the larger water flow (with a larger water pressure) causes the one-way valve core 23 to move away from the filter screen 22 and allow the water to flow through the one-way valve hole 214. It is easy to understand that when the water flows through the filter screen 22, the impurities therein cannot pass through the filter holes of the filter screen 22 and are filtered, so that the water output from the outlet end 12 is relatively clean and anti-fouling is achieved. The filtered impurities are usually attached to the filter screen 22, so that some of the filter holes of the filter screen 22 are completely blocked or partially blocked.

[0040] When the water flow between the inlet end 11 and the outlet end 12 is reduced by the control valve 13, for example, when the water flow between the inlet end 11 and the outlet end 12 is completely closed so that the water flow between the inlet end 11 and the outlet end 12 is zero, the elastic force of the elastic member 24 causes the one-way valve core 23 to approach the filter screen 22 and completely block the one-way valve hole 214 and reset, so that the water flow cannot pass through the one-way valve hole 214. During the process of resetting the one-way valve core 23, the one-way valve core 23 slightly pushes the water flow toward the filter screen 22 to generate a slight reverse water flow pulse, so that the impurities attached to the filter screen 22 are pushed by the slight reverse water flow pulse and at least partially separated from the filter screen 22, and then because the one-way valve core 23 is reset and the one-way valve hole 214 is closed, the water flow in the anti-fouling chamber 212 is stationary, and the impurities separated from the filter screen 22 fall due to their own weight, which can also delay or eliminate the leakage caused by the complete blockage of the filter screen 22.

[0041] As one of the specific implementations, the filter screen 22 includes a main filter part 221, which is in the shape of a cylinder with one end open (i.e., the other end is sealed), and the open end of the main filter part 221 surrounds the one-way valve hole 214, so that there is a gap between the side wall of the main filter part 221 and the inner wall of the anti-fouling cavity 212. While increasing the filtering area of ​​the filter screen 22, the gap between the side wall of the main filter part 221 and the inner wall of the anti-fouling cavity 212 can store impurities that have escaped from the filter screen 22, thereby preventing the filter screen 22 from being completely blocked by impurities after long-term use.

[0042] As one of the specific embodiments, the main filter 221 is cylindrical with one end open, and the other end of the main filter 221 (that is, the other end of the open end of the main filter 221) is hemispherical as a whole.

[0043] As one of the specific implementations, one end of the opening of the main filter 221 extends obliquely in a direction away from the one-way valve hole 214 to form a check portion 222 with elasticity, the anti-fouling cavity 212 has the same cross-section (for example, it is cylindrical and has the same cross-section), and one end of the check portion 222 abuts against the inner wall of the anti-fouling cavity 212. By moving one end of the opening of the main filter 221 toward the one-way valve hole 214, so that one end of the check portion 222 abuts against the inner wall of the anti-fouling cavity 212, the filter screen 22 can be fixed in the anti-fouling cavity 212, which is convenient for assembling the anti-fouling assembly 2.

[0044] As one of the specific embodiments, the anti-fouling assembly 2 further includes a guide member 25 disposed in the one-way valve cavity 213, the guide member 25 includes a guide platform 252 provided with a guide hole 251; the one-way valve core 23 includes a sealing portion 231 and a guide column 236 snugly inserted into the guide hole 251, and the sealing portion 231 is located between the guide platform 252 and the one-way valve hole 214. The moving path of the sealing portion 231 can be ensured to be stable and its sealing performance to the one-way valve hole 214 can be ensured.

[0045] As one of the specific implementations, the guide member 25 also includes a connecting arm 253 and a fixing ring 254; the two ends of the connecting arm 253 are fixedly connected to the fixing ring 254 and the guide platform 252 respectively, the diameter of the fixing ring 254 is larger than the diameter of the guide platform 252, and the elastic member 24 is a spring and the two ends are respectively against the sealing portion 231 and the fixing ring 254. When assembling the anti-fouling component 2, the one-way valve core 23, the elastic member 24, and the guide member 25 can be pre-assembled or sequentially inserted into the one-way valve cavity 213, which is convenient for assembling the anti-fouling component 2.

[0046] As one of the specific implementations, the sealing part 231 is fixedly provided with an elastic member cone 241, the elastic member 24 is a conical spring and the end with a smaller diameter (i.e., the diameter of the spiral of the conical spring) is snugly mounted on the elastic member cone 241, and the end with a larger diameter of the elastic member 24 abuts against or is close to the inner wall of the one-way valve cavity 213. The smaller end of the elastic member 24 and the sealing part 231 driven by it have a tendency to be centered, which can ensure that the moving path of the sealing part 231 is stable and ensure its sealing performance to the one-way valve hole 214.

[0047] As one of the specific implementations, the one-way valve chamber 213 is provided with a retaining ring groove 261 , in which a retaining ring 26 is disposed to abut against the fixing ring 254 , so as to facilitate fixing the guide member 25 in the one-way valve chamber 213 .

[0048] As one of the specific embodiments, the sealing portion 231 is disc-shaped (i.e., a cylindrical shape with a thickness less than a diameter), and the sealing portion 231 extends outward to form at least three centering protrusions 234, and the centering protrusions 234 are respectively against or close to the inner wall of the one-way valve cavity 213. It is easy to understand that there is a water outlet 235 between two adjacent centering protrusions 234 to allow water to flow through. It can ensure that the moving path of the sealing portion 231 is stable and ensure its sealing performance to the one-way valve hole 214.

[0049] As one of the specific embodiments, the anti-fouling component 2 also includes a flexible pad 232 provided with a through hole, and the sealing part 231 is fixedly provided with a flexible pad fixing part 233, and the middle part of the flexible pad fixing part 233 passes through the through hole of the flexible pad 232, so that the sealing part 231 and one end of the flexible pad fixing part 233 (which is cylindrical or truncated cone-shaped, and the one end of the truncated cone-shaped flexible pad fixing part 233 is easier to pass through the through hole of the flexible pad 232) clamp the flexible pad 232, and the flexible pad 232 completely blocks the one-way valve hole 214, so that the sealing part 231 indirectly completely blocks the one-way valve hole 214; one end of the flexible pad fixing part 233 has a part extending into the one-way valve hole 214. While ensuring the sealing performance of the sealing part 231, the sealing part 231 can increase the flow rate of the reverse water flow pulse when resetting, thereby improving the effect of delaying or eliminating the complete blockage of the filter screen 22.

[0050] Second embodiment.

[0051] The anti-fouling one-way valve of the second embodiment further includes a conversion nozzle 3 fixedly connected to the anti-fouling component carrier 21. The conversion nozzle 3 and the anti-fouling chamber 212 have different diameters at both ends, so that the anti-fouling chamber 212 can be connected to pipes of different diameters.

[0052] As used in this utility model, the terms: first, second, etc., do not indicate any order, quantity or importance, but are only used for distinction.

[0053] As used in the present invention, the terms "a", "an", etc. do not indicate a limitation of quantity, but rather indicate the presence of at least one of the referenced object.

[0054] For example, the terms indicating orientation or position used in the present invention, such as top, bottom, side, longitudinal, transverse, middle, center, outside, inside, horizontal, vertical, left, right, above, below, etc., are intended to reflect relative positions rather than absolute positions.

[0055] As used in the present invention, terms such as approximately, overall, approximately, and similar are limiting terms that indicate that a feature exists but a certain deviation is allowed. The amount of the certain deviation allowed may vary depending on the specific context; for example, the specific context that may depend on the deviation of a dimension includes but is not limited to the relevant standards of dimensional tolerance.

Claims

1. An anti-fouling one-way valve, comprising a valve assembly (1); the valve assembly (1) comprising an inlet end (11), an outlet end (12) and a control valve (13) for controlling the change of water flow between the inlet end (11) and the outlet end (12); wherein: The invention also comprises an anti-fouling component (2); the anti-fouling component (2) comprises an anti-fouling component carrier (21), a filter screen (22), a one-way valve core (23) and an elastic member (24); the anti-fouling component carrier (21) is provided with an anti-fouling chamber (212), a one-way valve hole (214) and a one-way valve chamber (213) in sequence; the one-way valve chamber (213) is communicated with the inlet end (11); the filter screen (22) is arranged in the anti-fouling chamber (212) and completely surrounds the one-way valve hole (214); the one-way valve core (23) is arranged in the one-way valve chamber (213), and two ends of the elastic member (24) are respectively connected to the one-way valve core (23) and the anti-fouling component carrier (21) so that the one-way valve core (23) directly or indirectly completely blocks the one-way valve hole (214) and has a tendency to approach the filter screen (22).

2. The anti-fouling one-way valve according to claim 1, characterized in that: The filter screen (22) comprises a main filter portion (221), which is in the shape of a cylinder with one end open. The open end of the main filter portion (221) surrounds the one-way valve hole (214), so that a gap exists between the side wall of the main filter portion (221) and the inner wall of the anti-fouling cavity (212).

3. The anti-fouling one-way valve according to claim 2, characterized in that: The main filter part (221) is cylindrical with one end open, and the other end of the main filter part (221) is hemispherical as a whole.

4. The anti-fouling one-way valve according to claim 3 is characterized in that: One end of the opening of the main filter portion (221) extends obliquely in a direction away from the one-way valve hole (214) to form a resilient check portion (222). The cross-sections of the anti-fouling cavity (212) are all the same, and one end of the check portion (222) abuts against the inner wall of the anti-fouling cavity (212).

5. The anti-fouling one-way valve according to claim 1, characterized in that: The anti-fouling component (2) also includes a guide member (25) disposed in the one-way valve cavity (213), the guide member (25) including a guide platform (252) provided with a guide hole (251); the one-way valve core (23) includes a sealing portion (231) and a guide column (236) snugly inserted into the guide hole (251), the sealing portion (231) being located between the guide platform (252) and the one-way valve hole (214).

6. The anti-fouling one-way valve according to claim 5, characterized in that: The guide member (25) further comprises a connecting arm (253) and a fixing ring (254); two ends of the connecting arm (253) are respectively fixedly connected to the fixing ring (254) and the guide platform (252); the diameter of the fixing ring (254) is larger than the diameter of the guide platform (252); the elastic member (24) is a spring and two ends thereof are respectively against the sealing portion (231) and the fixing ring (254).

7. The anti-fouling one-way valve according to claim 6, characterized in that: The sealing portion (231) is fixedly provided with an elastic member cone (241), the elastic member (24) is a conical spring and the end with a smaller diameter is snugly sleeved on the elastic member cone (241), and the end with a larger diameter of the elastic member (24) is against or close to the inner wall of the one-way valve cavity (213).

8. The anti-fouling one-way valve according to claim 6, characterized in that: The one-way valve cavity (213) is provided with a retaining ring groove (261), and a retaining ring (26) is arranged in the retaining ring groove (261) and abuts against the fixing ring (254).

9. The anti-fouling one-way valve according to claim 5, characterized in that: The sealing portion (231) is disc-shaped, and the sealing portion (231) extends outward to form at least three centering protrusions (234).

10. The anti-fouling one-way valve according to claim 1, characterized in that: The anti-fouling component (2) also includes a flexible pad (232) provided with a through hole, the sealing portion (231) is fixedly provided with a flexible pad fixing portion (233), the middle portion of the flexible pad fixing portion (233) passes through the through hole of the flexible pad (232), so that the sealing portion (231) and one end of the flexible pad fixing portion (233) clamp the flexible pad (232), the flexible pad (232) completely covers the one-way valve hole (214), and one end of the flexible pad fixing portion (233) has a portion extending into the one-way valve hole (214).

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