Anti-falling buckle type electromagnetic valve with filter screen

Abstract

The utility model provides an anti-falling buckle type electromagnetic valve with a filter screen, which comprises a valve shell, a waterway channel is arranged on the valve shell in a penetrating manner, two ends of the waterway channel form a water inlet end and a water outlet end, and the filter screen is arranged in the water inlet end; the filter element further comprises a first buckling piece, the first buckling piece is buckled into the water inlet end and used for preventing the filter screen from being separated from the water inlet end, and the periphery of the first buckling piece is sleeved with a plurality of first sealing rings abutting against the inner wall of the water inlet end. The water inlet pipe further comprises a second buckling piece, the second buckling piece is buckled to the periphery of the water inlet end and used for preventing the first buckling piece from being separated from the water inlet end, and through the double-buckling type structure of the first buckling piece and the second buckling piece, the first buckling piece and the second buckling piece can be prevented from being ejected out or damaged by high-pressure water when the water pressure is high. And the filter screen is prevented from falling off.

Description

Technical Field

[0001] This utility model relates to the field of solenoid valve technology, specifically to a solenoid valve with a filter screen and an anti-detachment snap-on design. Background Technology

[0002] Tap water often contains solid impurities such as sediment, rust, and colloids. When water flows through a solenoid valve, these impurities can easily impact the internal sealing surface, causing seal failure; or wear down rubber seals, leading to leaks, valve malfunctions, and other problems. To solve this problem, a conventional technical solution is to install a filter screen or other filtration device at the inlet of the solenoid valve to intercept impurities and protect the core components of the valve body. For example, the post-solenoid valve and water purifier disclosed in Chinese patent CN222316088U uses this structure, integrating the filter screen with the valve body through welding. However, welding has the following drawbacks:

[0003] Processes such as ultrasonic welding are sensitive to the cleanliness of the workpiece surface and welding parameters. During production, defects such as incomplete welding and weak fusion are prone to occur, resulting in insufficient connection strength between the filter screen and the valve body. Even if the airtightness test is passed, the weld interface may crack due to thermal deformation and stress fatigue under high temperature environment (such as water heater) or high pressure water flow impact, causing the filter screen to fall off. In addition, glue is prone to overflow at the weld, resulting in an unsightly product. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to propose a snap-on solenoid valve with a filter screen to solve the problems mentioned in the background section.

[0005] This utility model is achieved through the following technical solution:

[0006] A snap-fit ​​solenoid valve with a filter screen includes a valve body with a water passage extending through it. The two ends of the water passage form an inlet and an outlet. A filter screen is installed inside the inlet. The valve body also includes a first snap-fit ​​element that snaps into the inlet and prevents the filter screen from detaching from the inlet. Several first sealing rings are fitted around the outer periphery of the first snap-fit ​​element to abut against the inner wall of the inlet. Finally, the valve body includes a second snap-fit ​​element that engages with the outer periphery of the inlet and prevents the first snap-fit ​​element from detaching from the inlet.

[0007] Furthermore, the first fastener includes a plurality of first hooks, and the valve housing is provided with a first engaging surface that engages with the first hooks. The second fastener includes a plurality of second hooks, and the valve housing is provided with a second engaging surface that engages with the second hooks. The second fastener also includes an anti-detachment surface that abuts against the side end face of the first fastener.

[0008] Furthermore, the first fastener also includes several stepped strips, the valve housing is provided with guide grooves to accommodate the stepped strips, and the second fastener is provided with limiting strips to support the stepped strips.

[0009] Furthermore, it also includes a quick-connect assembly, which includes a third fastener, a fourth fastener, and a quick-connect tube. The third fastener is fastened to the outer periphery of the front end of the first fastener, the fourth fastener is fastened into the interior of the third fastener, and the quick-connect tube is inserted into the fourth fastener.

[0010] Furthermore, a plurality of second sealing rings are provided between the quick-connect fitting and the first snap-fit ​​component.

[0011] Furthermore, the filter screen includes a filter section and a storage section arranged around the filter section, where impurities in the water flow are blocked by the filter section and slide into the storage section under the impact of the water flow.

[0012] Furthermore, it also includes a valve core, which is equipped with a plug that can move between blocking and accommodating the water passage.

[0013] The beneficial effects of this utility model are as follows: A snap-on solenoid valve with a filter screen includes a valve body, wherein a water passage is provided through the valve body, and the two ends of the water passage form an inlet end and an outlet end. A filter screen is provided inside the inlet end. It also includes a first snap-on component, which snaps into the interior of the inlet end and is used to prevent the filter screen from detaching from the inlet end. Several first sealing rings abutting against the inner wall of the inlet end are provided on the outer periphery of the first snap-on component. It also includes a second snap-on component, which snaps onto the outer periphery of the inlet end and is used to prevent the first snap-on component from detaching from the inlet end. Through the double snap-on structure of the first and second snap-on components, it can prevent the first and second snap-on components from being pushed out or damaged by high-pressure water under high water pressure, which would cause the filter screen to detach. Attached Figure Description

[0014] Figure 1 This is a perspective view of the present invention.

[0015] Figure 2 This is a cross-sectional view of the present invention.

[0016] Figure 3 This is an exploded view of the present invention.

[0017] Figure 4 This is an exploded view of the present invention from another perspective.

[0018] Figure 5 This is a partial exploded view of the present invention.

[0019] The above figures include the following reference numerals:

[0020] 1. Valve body; 11. Water passage; 12. Inlet; 13. Outlet; 14. First snap-fit ​​surface; 15. Second snap-fit ​​surface; 16. Guide groove; 2. Filter screen; 21. Filter section; 22. Storage section; 3. First snap fastener; 31. First hook; 32. Step strip; 4. First sealing ring; 5. Second snap fastener; 51. Second hook; 52. Limiting strip; 6. Quick-connect assembly; 61. Third snap fastener; 62. Fourth snap fastener; 621. Deformation groove; 63. Quick-connect pipe; 64. Second sealing ring; 7. Valve core; 71. Plug. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. It should be noted that the description of these embodiments is intended to aid in understanding this utility model, but does not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0022] Reference Figures 1 to 5 As shown, a snap-fit ​​solenoid valve with a filter screen 2 includes a valve body 1, through which a water passage 11 is provided. The two ends of the water passage 11 form an inlet end 12 and an outlet end 13. The filter screen 2 is provided inside the inlet end 12. It also includes a first snap-fit ​​member 3, which snaps into the interior of the inlet end 12 and is used to prevent the filter screen 2 from detaching from the inlet end 12. A plurality of first sealing rings 4 are sleeved on the outer periphery of the first snap-fit ​​member 3 to abut against the inner wall of the inlet end 12. It also includes a second snap-fit ​​member 5, which snaps onto the outer periphery of the inlet end 12 and is used to prevent the first snap-fit ​​member 3 from detaching from the inlet end 12.

[0023] Because the first latching member 3 is fastened to the valve body 1, and the second latching member 5 is fastened to the valve body 1 and prevents the first latching member 3 from detaching from the valve body 1 axially, the second latching member 5 acts as a strong support to hold the valve body 1 in place. This prevents the inlet end 12 of the valve body 1 from expanding under high water pressure, thus preventing the first latching member 3 from detaching from the valve body 1 and avoiding the filter screen 2 from falling off. Experiments have shown that the anti-detachment latching solenoid valve of this invention will not detach under water pressures up to 3.5 MPa.

[0024] Furthermore, the water passage is sealed by two first sealing rings 4 to prevent water leakage at the connection between the first snap fastener 3 and the valve body 1.

[0025] The first latching member 3 includes a plurality of first hooks 31, and the valve housing 1 is provided with a first engaging surface 14 that engages with the first hooks 31. The second latching member 5 includes a plurality of second hooks 51, and the valve housing 1 is provided with a second engaging surface 15 that engages with the second hooks 51. The second latching member 5 also includes an anti-detachment surface that abuts against the side end face of the first latching member 3. The anti-detachment surface allows the second latching member 5 to support the first latching member 3, preventing the first latching member 3 from axially detaching from the valve housing 1. The second hooks 51 engage with the second engaging surface 15, preventing the inlet end 12 of the valve housing 1 from expanding under high water pressure. Furthermore, through surface contact, the force direction changes from a single snapping tooth engagement to a uniform abutment between surfaces, significantly improving the pull-out resistance of the connection, making it particularly suitable for long-term stable operation in high-pressure fluid environments.

[0026] The first fastener 3 further includes several stepped strips 32. The valve body 1 is provided with guide grooves 16 to accommodate the stepped strips 32. The second fastener 5 is provided with limiting strips 52 that support the stepped strips 32. The stepped strips 32 and the guide grooves 16 provide positioning and guidance for the assembly of the first fastener 3 and the valve body 1. The side end face of the limiting strip 52 forms the aforementioned anti-disengagement surface and supports the stepped strips 32, thereby increasing the stress-bearing area, reducing local stress concentration, and further enabling the second fastener 5 to support the first fastener 3.

[0027] To facilitate easy assembly and disassembly of the anti-detachment snap-fit ​​solenoid valve of this utility model with the external pipeline, i.e., the quick-connect pipe 63, a quick-connect assembly 6 is also included. The quick-connect assembly 6 includes a third snap-fit ​​member 61, a fourth snap-fit ​​member 62, and a quick-connect pipe 63. The third snap-fit ​​member 61 is fastened to the outer periphery of the front end of the first snap-fit ​​member 3, the fourth snap-fit ​​member 62 is fastened into the interior of the third snap-fit ​​member 61, and the quick-connect pipe 63 is inserted into the fourth snap-fit ​​member 62.

[0028] Specifically, one end of the fourth fastener 62 is provided with a plurality of deformation grooves 621. The end with the deformation grooves 621 is fastened into the third fastener 61, and the third fastener 61 surrounds and encloses the deformation grooves 621 and is fastened to the outer periphery of the front end of the first fastener 3. By inserting the quick-connect pipe 63 into the fourth fastener 62, the assembly of the anti-dislodgement snap-on solenoid valve of this utility model is completed, and the assembly operation is simple.

[0029] A plurality of second sealing rings 64 are provided between the quick-connect pipe 63 and the first fastener 3. The water channel space is sealed by two second sealing rings 64 to prevent water leakage at the connection between the fourth fastener 62 and the quick-connect pipe 63.

[0030] Similarly, a quick-connect component 6 is provided at the water outlet end 13 of the valve housing 1, and a third buckle 61 in the quick-connect component 6 is buckled to the outer periphery of the water outlet end 13 of the valve housing 1.

[0031] The filter net 2 includes a filtering part 21 and a hoarding part 22 arranged around the filtering part 21. Impurities in the water flow are blocked by the filtering part 21 and slide into the hoarding part 22 under the impact of the water flow. The filtering part 21 faces the quick-connect pipe 63 directly. Debris in the water flow is blocked by the filtering part 21, and under the impact of the water flow, the impurities slide along both sides of the filtering part 21 into the hoarding part 22 to be hoarded, preventing the accumulation of debris on the filtering part 21 and affecting the filtering effect. The filter net 2 is in a "ji" shape, the middle part of the "ji" shape forms the filtering part 21, and both sides of the "ji" shape form the hoarding part 22.

[0032] It further includes a valve core 7. The valve core 7 is provided with a plug 71, and the plug 71 can move between a position blocking and a position giving way to the water channel 11. The start and stop of the water flow of the anti-detachment snap-type solenoid valve of the present invention are controlled by the plug 71.

[0033] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0034] In the description of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0035] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A solenoid valve with a filter screen and an anti-detachment snap-on design, characterized in that: Includes a valve housing (1), the valve housing (1) is provided with a water passage (11), the two ends of the water passage (11) form an inlet end (12) and an outlet end (13), and the inlet end (12) is provided with a filter screen (2). It also includes a first fastener (3), which is fastened into the interior of the water inlet (12) and is used to prevent the filter screen (2) from detaching from the water inlet (12). The outer periphery of the first fastener (3) is provided with several first sealing rings (4) that abut against the inner wall of the water inlet (12). It also includes a second fastener (5), which is fastened to the outer periphery of the water inlet (12) and is used to prevent the first fastener (3) from disengaging from the water inlet (12).

2. The anti-detachment snap-on solenoid valve with filter screen according to claim 1, characterized in that: The first fastener (3) includes a plurality of first hooks (31), and the valve housing (1) is provided with a first snap-fit ​​surface (14) that cooperates with the first hooks (31). The second fastener (5) includes a plurality of second hooks (51), and the valve housing (1) is provided with a second snap-fit ​​surface (15) that cooperates with the second hooks (51). The second fastener (5) also includes an anti-detachment surface that abuts against the side end face of the first fastener (3).

3. The anti-detachment snap-on solenoid valve with filter screen according to claim 1, characterized in that: The first fastener (3) further includes a plurality of step strips (32), the valve housing (1) is provided with a guide groove (16) for accommodating the step strips (32), and the second fastener (5) is provided with a limiting strip (52) for supporting the step strips (32).

4. The anti-detachment snap-on solenoid valve with filter screen according to claim 1, characterized in that: It also includes a quick-connect assembly (6), which includes a third fastener (61), a fourth fastener (62), and a quick-connect pipe (63). The third fastener (61) is fastened to the outer periphery of the front end of the first fastener (3), the fourth fastener (62) is fastened into the interior of the third fastener (61), and the quick-connect pipe (63) is inserted into the fourth fastener (62).

5. A solenoid valve with a filter screen and an anti-detachment snap-on design according to claim 4, characterized in that: A plurality of second sealing rings (64) are provided between the quick-connect pipe (63) and the first fastener (3).

6. A snap-on solenoid valve with a filter screen according to any one of claims 1 to 5, characterized in that: The filter screen (2) includes a filter section (21) and a storage section (22) arranged around the filter section (21). Impurities in the water flow are blocked by the filter section (21) and slide into the storage section (22) under the impact of the water flow.

7. A solenoid valve with a filter screen and an anti-detachment snap-on design according to any one of claims 1 to 5, characterized in that: It also includes a valve core (7) with a plug (71) that can move between blocking and accommodating the water passage (11).

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