Safety valve element with adjustable fluid pressure and water outlet device

Abstract

The invention provides a fluid pressure adjustable safety valve element and a water outlet device, and relates to the technical field of sanitary products, the fluid pressure adjustable safety valve element comprises a shell, a valve rod, a movable piece and a fixed piece, the shell is provided with a water inlet, a water outlet and a positioning groove, a positioning part is arranged or formed on the valve rod, and the positioning part is inserted in the positioning groove so that the valve rod can be limited in the axial direction of the shell; the valve rod is driven in an operable mode to link the moving plate to move or rotate, so as to correspondingly control the connection and disconnection of the water inlet and the water outlet; a hollow part is formed in the position, above the positioning groove, of the shell, so that the pressure borne by the position, right opposite to the hollow part, of the positioning groove is smaller than that borne by other positions, when the fluid pressure is too large, the positioning part preferentially crushes the positioning groove right opposite to the hollow part to move upwards, the movable piece and the fixed piece are promoted to be separated, and therefore the fluid pressure borne by the valve element is adjusted; the valve core is prevented from blasting. The explosion-proof structure is simple, and the problems that an existing explosion-proof structure is complex and high in cost are solved.

Description

Technical Field

[0001] This invention relates to the field of bathroom product technology, and more specifically, to a safety valve core with adjustable fluid pressure and a water outlet device. Background Technology

[0002] Most water outlet devices control the flow of water between the inlet and outlet channels using a built-in valve core. Therefore, the valve core is a crucial component in the water supply process. However, sometimes due to excessively high water pressure in the supply system, the fluid pressure can exceed the valve core's pressure tolerance, causing it to fly out and spill water. This is especially dangerous when no one is home, leading to flooding and severely impacting the building structure, walls, and floors, potentially causing collapse. It can also affect other floors, damaging wallpaper and wooden floors. Furthermore, it can seep into electrical wires, switches, and other fixtures within the walls, posing a short circuit or fire risk. In summary, a burst valve core can cause significant environmental damage and substantial property loss. Moreover, the damaged structure connecting the valve core to the water outlet device makes repair and replacement difficult. Therefore, existing water outlet devices often incorporate water pressure sensors, such as the one disclosed in Chinese Patent CN205898353U and the structure and valve body disclosed in CN220418717U for improving the lifespan of pressure sensors, to monitor fluid pressure. However, this type of solution requires not only a water pressure sensor but also control valves for water flow switching, resulting in a complex structure with numerous components. This increases mold, parts, and assembly costs, leading to a higher overall cost for the water outlet device and hindering market promotion. Furthermore, water pressure sensors can only detect fluid pressure and cannot regulate it; therefore, they only provide early warning and lack explosion-proof capabilities, failing to prevent valve core bursting. Summary of the Invention

[0003] This invention discloses a safety valve core with adjustable fluid pressure, which aims to improve the problems of complex and high cost of existing explosion-proof structures.

[0004] The present invention adopts the following solution: A fluid pressure adjustable safety valve core includes a housing, a valve stem, a moving plate, and a fixed plate. The housing has an inlet, an outlet, and a positioning groove. The valve stem is equipped with or formed with a positioning part, which is inserted into the positioning groove to limit the valve stem along the axial direction of the housing and to cause the valve stem to abut against the moving plate and fit against the fixed plate. The valve stem can be operably driven to move or rotate the moving plate, thereby controlling the opening and closing of the inlet and outlet. The housing has a perforated portion formed above the positioning groove so that the pressure that the positioning groove can withstand at the position directly opposite the perforated portion is less than at other positions. When the fluid pressure in the water supply system is too high, the positioning part first breaks through the positioning groove directly opposite the perforated portion to move upward, causing the moving plate and the fixed plate to separate, thereby adjusting the fluid pressure on the valve core and preventing the valve core from bursting.

[0005] As a further improvement, the positioning part is configured to rotate with the valve stem and cooperate with the positioning groove to limit the rotation angle of the valve stem. When the valve core is closed, the positioning part is located directly below the hollow part.

[0006] As a further improvement, the positioning part is rod-shaped, with its middle part passing through the valve stem and its two ends inserted into positioning grooves provided along the side wall of the housing.

[0007] As a further improvement, the positioning part is thicker in the middle and thinner at both ends, with the middle section having an interference fit with the shaft hole on the valve stem, and a clearance groove provided on the middle section.

[0008] As a further improvement, a positioning groove is provided on each side of the housing, and a hollow part is formed above each positioning groove, and the distance between the bottom end of the two hollow parts and the top surface of the positioning groove is different.

[0009] As a further improvement, the hollow portion is a hollow hole provided along the side wall of the housing, and the hollow hole has a straight edge at least on the side near the top of the positioning groove.

[0010] As a further improvement, the sidewall connecting the hollow hole and the straight edge is arc-shaped, and the positions where the two ends of the straight edge connect with the arc are all transitioned by an arc.

[0011] As a further improvement, the water inlet is located on the side of the housing, the bottom of the housing is equipped with a base, the water outlet is located on the base, the fixed plate has a water outlet hole communicating with the water outlet, and the movable plate has a water sealing part for blocking the communication between the water outlet hole and the water inlet. The movable plate is rotated by the valve stem to control the opening and closing of the water outlet and the water inlet.

[0012] As a further improvement, the outer wall of the housing is provided with a protrusion, which is used to cooperate with the mounting cavity of the water outlet device for positioning.

[0013] Another water outlet device is provided, including a water outlet body and a fluid pressure adjustable safety valve core as described in any of the preceding claims disposed within the water outlet body.

[0014] By adopting the above technical solution, the present invention can achieve the following technical effects: 1. This application can promptly adjust the fluid pressure on the valve core when the fluid pressure is too high. It has fewer components, a simpler structure, and lower cost, which helps improve the market competitiveness of the valve core. Specifically, by forming a hollow section above the positioning groove, when the fluid pressure exceeds the pressure that the positioning groove at the position directly opposite the hollow section can withstand, it will preferentially break through the groove wall at that position to connect with the hollow section. This allows the positioning section to move towards the hollow section, forcing the moving plate to move upward and separate from the fixed plate. At this time, the inlet and outlet are connected, and water flows out from the outlet, thereby adjusting the fluid pressure on the valve core. This prevents the fluid pressure from exceeding the valve core's withstand pressure, which could cause the valve core to burst and fly out of the water outlet device, reducing damage to the water outlet device and the surrounding environment when the fluid pressure is too high.

[0015] 2. A positioning groove is provided on each side of the shell, and a hollow part is formed above each positioning groove. The distance between the bottom end of the two hollow parts and the top surface of the positioning groove is different, so that the positioning part is in an inclined state after the hollow part is crushed, which causes the moving piece to be tilted, thus avoiding the fixed piece and the moving piece from adhering to each other and causing them to be unable to separate. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of one embodiment of the present invention; Figures 2 to 4 These are cross-sectional views along different sections of one embodiment of the present invention; Figure 5 This is a partial cross-sectional view of one embodiment of the present invention when the valve core is open; Figure 6 This is a cross-sectional view along another section when the valve core is open, according to one embodiment of the present invention; Figure 7 and Figure 8 This is a schematic diagram of the housing structure of one embodiment of the present invention from different perspectives; Figure 9This is a schematic diagram of the valve stem structure according to one embodiment of the present invention; Figure 10 This is a schematic diagram of the structure of a fixed piece according to one embodiment of the present invention; Figure 11 and Figure 12 This is a schematic diagram of the structure of the moving piece in one embodiment of the present invention from different viewing angles; Figure 13 This is a schematic diagram of the positioning part according to one embodiment of the present invention; Figure 14 This is an exploded view of one embodiment of the present invention; Figure 15 This is a schematic diagram of the positioning part crushing the hollow part in one embodiment of the present invention.

[0018] icon: 1-Shell; 11-Inlet; 12-Outlet; 13-Positioning groove; 14-Hollowed-out section; 141-Straight edge; 142-Side wall; 143-Circular transition; 15-Limiting groove; 16-Protrusion; 2-Valve stem; 21-Positioning part; 211-Middle section; 212-Void groove; 22-Shaft hole; 23-First limiting part; 24-Sealing ring; 25-Gasket; 3-Moving plate; 31-Sealing part; 32-Second limiting part; 4-Fixed plate; 41-Water outlet; 42-Limiting protrusion; 5-Base; 51-Seal; 52-Retaining ring. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to represent selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] The terms “top,” “bottom,” “upper,” “lower,” “left,” “right,” “front,” “back,” and similar expressions used in this document are for illustrative purposes only. The terms “first,” “second,” etc., are only used to distinguish different objects and should not be construed as indicating or implying relative importance or the quantity, specific order, or primary or secondary relationship of the indicated technical features. The term “several” means one or more, and “multiple” means two or more, unless otherwise explicitly specified. Example

[0021] Combination Figures 1 to 15 This embodiment provides a safety valve core with adjustable fluid pressure, including a housing 1, a valve stem 2, a moving plate 3, and a fixed plate 4. The housing 1 has an inlet 11, an outlet 12, and a positioning groove 13. A positioning part 21 is installed or formed on the valve stem 2. The positioning part 21 is inserted into the positioning groove 13 to limit the valve stem 2 along the axial direction of the housing 1 and to make the valve stem 2 abut against the moving plate 3 to fit with the fixed plate 4. The valve stem 2 is driven to move or rotate in a operative manner to control the opening and closing of the inlet 11 and the outlet 12. The housing 1 has a hollow part 14 formed above the positioning groove 13 so that the pressure that the positioning groove 13 can withstand at the position directly opposite the hollow part 14 is less than that at other positions. When the fluid pressure of the water supply system is too high, the positioning part 21 first breaks the positioning groove 13 directly opposite the hollow part 14 to move upward, causing the moving plate 3 and the fixed plate 4 to separate, thereby adjusting the fluid pressure on the valve core and preventing the valve core from bursting.

[0022] When the valve core is open, the inlet 11 and outlet 12 are connected, and water flows in from the inlet channel and into the inlet 11, then flows from the outlet 12 to the outlet channel. When the valve core is closed, the inlet 11 and outlet 12 are separated, and water cannot flow from the inlet 11 into the housing 1 to the outlet 12. For example, the valve core can withstand a fluid pressure of 3.5 MPa. When the fluid pressure of the water supply system exceeds 3.5 MPa, the valve core will burst, causing water to overflow. The perforated part 14 is designed so that when the fluid pressure is 3 MPa or other pressure less than 3.5 MPa, the positioning part 21 will preferentially crush the positioning groove 13 below the perforated part 14, thereby preventing the fluid pressure from reaching a pressure that the valve core cannot withstand, causing the valve core to burst or fly out of the water outlet device.

[0023] It should be noted that in this embodiment, the fluid pressure on the valve core can be adjusted in a timely manner when the fluid pressure is too high. It has fewer components, a simpler structure, and lower cost, which helps improve the market competitiveness of the valve core. Specifically, by forming a hollow portion 14 above the positioning groove 13, when the fluid pressure exceeds the pressure that the positioning groove 13 directly opposite the hollow portion 14 can withstand, it will preferentially break the groove wall of the positioning groove 13 at that position to connect with the hollow portion 14. This allows the positioning part 21 to move towards the hollow portion 14, forcing the moving piece 3 to move upwards to separate from the fixed piece 4. At this time, the inlet 11 and outlet 12 are connected, and water flows out from the outlet 12, thereby adjusting the fluid pressure on the valve core and preventing the fluid pressure from exceeding the pressure that the valve core can withstand, thus avoiding the problem of valve core bursting and reducing damage to the water outlet device and the surrounding environment when the fluid pressure is too high.

[0024] In a preferred embodiment, the positioning part 21 is configured to rotate with the valve stem 2 and cooperate with the positioning groove 13 to limit the rotation angle of the valve stem 2. When the valve core is closed, the positioning part 21 is located directly below the hollow part 14. The positioning part 21 not only limits the valve stem 2 along the axial direction of the housing 1 but also restricts the rotation angle of the valve stem 2. Simultaneously, it positions the valve stem 2 and the moving plate 3 relative to the fixed plate 4, ensuring the accuracy of the closed and open positions, resulting in a simple structure. Furthermore, in the closed position, the positioning part 21 is located below the hollow part 14, ensuring pressure protection for the valve core when it is closed.

[0025] Furthermore, the positioning part 21 is rod-shaped, with its middle section penetrating the valve stem 2 and its two ends inserted into the positioning grooves 13 provided along the side wall of the housing 1. That is, the valve stem 2 is hung on the housing 1 via the positioning part 21. During installation, the valve stem 2 is fitted into the housing 1, and then the positioning part 21 is inserted from the side wall, facilitating easy assembly and disassembly. Preferably, the middle section 211 of the positioning part 21 is thicker than both ends, with the middle section 211 having an interference fit with the shaft hole 22 on the valve stem 2, and a clearance groove 212 provided on the middle section 211. The positioning part 21 can be made of stainless steel to ensure its strength. The interference fit of the middle section 211 prevents the positioning part 21 from shifting, and the clearance groove 212 ensures proper assembly, reduces the interference fit, and prevents the shaft hole 22 from breaking.

[0026] In another embodiment, a positioning groove 13 is provided on each side of the housing 1, and a hollow part 14 is formed above each positioning groove 13. The bottom end of the two hollow parts 14 is at a different distance from the top surface of the positioning groove 13, so that the positioning part 21 is in an inclined state after the hollow part 14 is crushed, which causes the moving piece 3 to deflect, thus preventing the fixed piece 4 from adsorbing with the moving piece 3 and causing a situation where they cannot be separated.

[0027] For example, the perforated portion 14 is a perforated hole provided along the side wall of the housing 1, and the perforated hole has a straight edge 141 at least on the side near the top of the positioning groove 13. The angle between the straight edge 141 of the two perforated holes and the top surface of the positioning groove 13 on the same side is different, so that the two perforated holes can be crushed one after the other rather than simultaneously, ensuring the separation of the moving piece 3 and the fixed piece 4. This is not limited to this and is not specifically limited. Preferably, the side wall 142 connecting the perforated hole and the straight edge 141 is arc-shaped, and the positions where both ends of the straight edge 141 connect to the arc are all transitioned by arcs 143. The arc-shaped side wall 142 and the arc transition 143 can avoid stress concentration, prevent the housing 1 from cracking as a whole, ensure that when the positioning portion 21 crushes the perforated portion 14, it will not cause other parts of the housing 1 to crack, and ensure the sealing between the housing 1 and the mounting cavity and between the housing 1 and the valve stem 2 after the perforated portion 14 is crushed. Preferably, the sealing ring 24 on the valve stem 2 is configured to remain between the inlet 11 and the positioning groove 13 after the positioning part 21 crushes the hollow part 14, to prevent water from overflowing from the positioning groove 13. Meanwhile, a gasket 25 is fitted onto the shoulder of the valve stem 2. The gasket 25 not only cooperates with the positioning part 21 during assembly to limit the axial movement of the valve stem 2, but also can be compressed when the positioning part 21 crushes the hollow part 14 to provide space for the valve stem 2 to move upwards.

[0028] Based on the above embodiments, in an optional embodiment of the present invention, the inlet 11 is located on the side of the housing 1, the bottom of the housing 1 is equipped with a base 5, the outlet 12 is located on the base 5, the fixed plate 4 has an outlet hole 41 communicating with the outlet 12, and the movable plate 3 has a sealing part 31 for blocking the communication between the outlet hole 41 and the inlet 11. The movable plate 3 is rotated by the valve stem 2 to control the opening and closing of the outlet 12 and the inlet 11. For example, when the sealing part 31 is aligned with the outlet hole 41, the inlet 11 and the outlet 12 are separated; when the sealing part 31 is misaligned with the outlet hole 41, the inlet 11 and the outlet 12 are connected. The base 5 includes a sealing member 51 and a fixing ring 52 sleeved in the sealing member 51. The sealing member 51 is made of soft rubber, and the fixing ring 52 is preferably a stainless steel ring. Under the action of the fixing ring 52, the sealing member 51 is interference-fitted with the housing 1 to prevent the base 5 from slipping. During installation, the valve stem 2, moving plate 3, and fixed plate 4 are sequentially placed into the housing 1, then the base 5 is installed to press the fixed plate 4 firmly, and the positioning part 21 is inserted into the valve stem 2 along the positioning groove 13. The valve stem 2 is provided with a first limiting part 23, and the moving plate 3 is provided with a second limiting part 32. The first limiting part 23 and the second limiting part 32 are interlocked to allow the moving plate 3 to rotate synchronously with the valve stem 2. A limiting protrusion 42 is provided along the circumference of the fixed plate 4. This limiting protrusion 42 is used to fit and position itself with the limiting groove 15 on the inner wall of the housing 1 to restrict the rotation of the fixed plate 4.

[0029] It should be mentioned that this embodiment is easy to install. After the hollow part 14 is crushed, only the shell 1 needs to be replaced, which is conducive to maintenance and replacement and can save maintenance costs.

[0030] In other embodiments, a protrusion 16 is provided on the outer wall of the housing 1, which is used to cooperate with the mounting cavity of the water outlet device for positioning. For example, the mounting cavity is provided with a groove that matches the protrusion 16, and the protrusion 16 and the groove are fitted together to position the valve core. Then, the housing 1 is pressed together by the pressure cap to fix the valve core.

[0031] The present invention also provides a water outlet device, including a water outlet body and a fluid pressure adjustable safety valve core as described in any of the preceding claims, disposed within the water outlet body. The water outlet body can be an angle valve, a faucet, etc., and is not specifically limited thereto. The water outlet device has an installation cavity, and the safety valve core is installed within the installation cavity to prevent the valve body from bursting and damaging the water outlet body when the fluid pressure is too high, thereby reducing losses caused by excessive water pressure.

[0032] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions that fall within the scope of the present invention are within the scope of protection of the present invention.

Claims

1. A safety valve core with adjustable fluid pressure, characterized in that, The device includes a housing, a valve stem, a moving plate, and a fixed plate. The housing has an inlet, an outlet, and a positioning groove. The valve stem is equipped with or formed with a positioning part, which is inserted into the positioning groove to limit the valve stem along the axial direction of the housing and to make the valve stem abut against the moving plate to fit against the fixed plate. The valve stem can be driven in an operable manner to move or rotate the moving plate in conjunction with it, thereby controlling the opening and closing of the inlet and outlet. The housing has a hollowed-out portion formed above the positioning groove, so that the pressure that the positioning groove can withstand at the position directly opposite the hollowed-out portion is less than that at other positions. When the fluid pressure of the water supply system is too high, the positioning portion will first break the positioning groove directly opposite the hollowed-out portion to move upward, causing the moving plate and the fixed plate to separate, thereby adjusting the fluid pressure on the valve core and preventing the valve core from bursting.

2. The fluid pressure adjustable safety valve core according to claim 1, characterized in that, The positioning part is configured to rotate with the valve stem and cooperate with the positioning groove to limit the rotation angle of the valve stem. When the valve core is closed, the positioning part is located directly below the hollow part.

3. The fluid pressure adjustable safety valve core according to claim 1, characterized in that, The positioning part is rod-shaped, with its middle part passing through the valve stem and its two ends inserted into positioning grooves provided along the side wall of the housing.

4. The fluid pressure adjustable safety valve core according to claim 3, characterized in that, The positioning part is thicker in the middle and thinner at both ends. The middle section is interference-fitted with the shaft hole on the valve stem, and a clearance groove is provided on the middle section.

5. The fluid pressure adjustable safety valve core according to claim 2, characterized in that, The housing has a positioning groove on each side and a hollow part is formed above each positioning groove, and the distance between the bottom end of the two hollow parts and the top surface of the positioning groove is different.

6. The fluid pressure adjustable safety valve core according to claim 5, characterized in that, The hollowed-out portion is a hollowed-out hole provided along the side wall of the housing, and the hollowed-out hole has a straight edge at least on the side near the top of the positioning groove.

7. The fluid pressure adjustable safety valve core according to claim 6, characterized in that, The sidewall connecting the hollow hole and the straight edge is arc-shaped, and the connection points between the two ends of the straight edge and the arc are all transitioned by arcs.

8. The fluid pressure adjustable safety valve core according to claim 2, characterized in that, The water inlet is located on the side of the housing, and a base is installed at the bottom of the housing. The water outlet is located on the base. The fixed plate has a water outlet hole that communicates with the water outlet. The movable plate has a water sealing part for blocking the communication between the water outlet hole and the water inlet. The movable plate is rotated by the valve stem to control the opening and closing of the water outlet and the water inlet.

9. The fluid pressure adjustable safety valve core according to claim 1, characterized in that, The outer wall of the housing is provided with a protrusion, which is used to cooperate with the mounting cavity of the water outlet device for positioning.

10. A water outlet device, characterized in that, It includes a water outlet body and a fluid pressure adjustable safety valve core as described in any one of claims 1-9, disposed within the water outlet body.

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