A fast-opening valve core with a check valve and a corresponding faucet

Abstract

The utility model provides a kind of quick-opening valve core with check valve and corresponding faucet, belong to faucet field. Including quick-opening shell, check shell, quick-opening shell is fixedly connected with check shell, it is the cavity that quick-opening shell and check shell are all communicated up and down in, the side wall of quick-opening shell is equipped with valve core water outlet, adjusting handle, dial, moving piece, fixed piece are installed from top to bottom in quick-opening shell;Check shell bottom is valve core water inlet, check shell is equipped with check valve, and the upper end of check shell is in abutment with fixed piece. The utility model integrates quick-opening valve core and check valve, this quick-opening valve core has switch flow regulating and anti-reflux function, avoid quick-opening valve core inner leakage or water pressure variation caused water backflow phenomenon, corresponding faucet's faucet body only needs to be provided with a valve core cavity, does not need to additionally set the cavity for accommodating check valve, also does not need additional check valve locking structure, so greatly simplify the structure of faucet body.

Description

Technical Field

[0001] This utility model belongs to the field of faucets, specifically relating to a quick-opening valve core with a check valve and a corresponding faucet. Background Technology

[0002] Faucets are widely used in home decoration and public water supply systems, and are ubiquitous water control devices in modern buildings. Faucets generally use a quick-opening valve core located at their outlet to control the on / off switching and flow regulation of water. Water flow is quickly turned on or off by rotating or pressing the handle. For example, a Chinese patent discloses a quick-opening valve core and faucet (application number: 2024204993737), including a valve body, a valve stem, and a moving valve plate and a stationary valve plate installed within the valve body. The valve body has an inlet and an outlet. The valve stem is rotatably fitted onto the valve body and connected to the moving valve plate. The stationary valve plate has a first water passage hole connecting to the inlet of the valve body, and the moving valve plate has a second water passage hole. The stationary valve plate and the moving valve plate are fitted together. The moving valve plate rotates with the valve stem, causing its second water passage hole to correspond to or offset from the first water passage hole, thus controlling the flow of water.

[0003] In actual use, faucets are usually connected to water-using appliances. When the faucet is turned off, residual water may remain in the appliances, causing the water pressure at the faucet's outlet to exceed the pressure at the inlet. This can lead to backflow into the appliances and the faucet, resulting in cross-contamination of the water source or damage to the appliances. To address this, check valves are typically installed on the faucet's piping. For example, a safe hot and cold water faucet disclosed in Chinese patent application number 2023104846954 has check valves installed on both its left and right inlet pipes. Check valves prevent backflow, ensuring unidirectional water flow. The inlet of the faucet equipped with a check valve and the water source are not contaminated by backflowing water, effectively guaranteeing the cleanliness of the water source.

[0004] Currently, faucets typically have separate quick-opening valve cores and check valves. The check valve is usually located at the inlet, while the quick-opening valve core is located at the outlet. These two valves work together to ensure unidirectional water flow and control the flow. For example, a mechanical secondary control water-saving quick-opening faucet disclosed in Chinese patent application number 2017203350805 includes a primary control component, a secondary control component, a faucet body, and a spout. The primary control component is equivalent to the quick-opening valve core assembly for turning the faucet on and off, and the secondary control component is equivalent to the check valve assembly. This requires two cavities on the faucet body to house the quick-opening valve core and check valve respectively, resulting in difficulties in manufacturing and assembly, which necessitates improvement. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned shortcomings and provide a structure that integrates the quick-opening valve core and the check valve into one piece, thereby simplifying the faucet body structure and faucet assembly.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows.

[0007] A quick-opening valve core with a check valve includes a quick-opening housing and a check housing. The quick-opening housing and the check housing are fixedly connected. Both the quick-opening housing and the check housing have cavities that are open vertically. A valve core outlet is provided on the side wall of the quick-opening housing. An adjusting handle, a dial, a moving plate, and a fixed plate are installed inside the quick-opening housing from top to bottom. The bottom of the check housing is the valve core inlet. A check valve is installed inside the check housing. The upper end of the check housing abuts against the fixed plate.

[0008] Furthermore, the upper part of the inner cavity of the check valve housing has a reduced-diameter inner check ring step, which the check valve can abut against.

[0009] Furthermore, the top of the shell wall of the check valve housing has a downwardly recessed first sealing ring groove, in which a first sealing ring is placed, and the first sealing ring abuts against the bottom surface of the fixed plate.

[0010] Furthermore, the bottom end of the shell wall of the check valve housing has an upwardly recessed second sealing ring groove, in which a second sealing ring is placed.

[0011] Furthermore, the bottom end of the outer groove wall of the second sealing ring groove extends radially inward to form a hook ring.

[0012] Furthermore, the outer side of the second sealing ring is provided with a protruding sealing ring protrusion. After the second sealing ring is inserted into the second sealing ring groove, the sealing ring protrusion will be hooked by the hook ring.

[0013] Furthermore, the top sidewall of the check valve housing is recessed to form an outer check valve step, which can abut against the bottom of the quick-opening housing.

[0014] Furthermore, the upper part of the outer groove wall of the first sealing ring groove extends radially outward to form an annular hook, and the bottom of the quick-opening housing is correspondingly provided with a hook-shaped quick-opening hook. The quick-opening hook cooperates with the annular hook to snap the check housing and the quick-opening housing together.

[0015] Furthermore, a third sealing ring is fitted onto the outer wall of the check valve.

[0016] This utility model also provides a faucet, including a faucet body, on which a water inlet channel and a water outlet channel are provided. A valve core cavity is provided between the water inlet channel and the water outlet channel. One end of the valve core cavity is connected to the water inlet channel and the other end is connected to the water outlet channel. The valve core cavity is open. The aforementioned quick-opening valve core with a check valve is installed inside the valve core cavity. When installing the quick-opening valve core with the check valve, it is directly inserted into the valve core cavity so that the valve core inlet is opposite to the water inlet channel and the valve core outlet is opposite to the water outlet channel.

[0017] Compared with existing technologies, this utility model provides a new design concept, integrating the quick-opening valve core and the check valve into a single unit. The check valve is placed directly below the fixed plate of the quick-opening valve core, allowing water to flow through the check valve first, then from the fixed plate to the moving plate, and finally out of the quick-opening valve core. In this way, the quick-opening valve core combines on / off flow regulation and backflow prevention functions, avoiding water backflow caused by leakage within the quick-opening valve core or changes in water pressure, thus ensuring water source cleanliness. The corresponding faucet body only needs one valve core cavity, eliminating the need for an additional cavity to house the check valve or an additional check valve locking structure. This greatly simplifies the faucet body structure, reduces manufacturing difficulty, simplifies assembly, lowers manufacturing costs, and enhances product competitiveness. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the quick-opening valve core in an embodiment of this utility model.

[0019] Figure 2 This is a cross-sectional view of the quick-opening valve core in an embodiment of this utility model.

[0020] Figure 3 This is a cross-sectional view of the check valve housing in an embodiment of this utility model.

[0021] In the diagram, 1. Quick-opening housing; 11. Valve core outlet; 2. Check valve housing; 21. Valve core inlet; 22. Check valve inner ring step; 23. First sealing ring groove; 231. Annular hook; 24. Second sealing ring groove; 241. Hook ring; 25. Check valve outer step; 3. Adjusting handle; 4. Dial; 5. Moving plate; 6. Fixed plate; 7. Check valve; 81. First sealing ring; 82. Second sealing ring; 83. Third sealing ring. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] like Figure 1-3As shown, this embodiment provides a quick-opening valve core with a check valve, including a quick-opening housing 1 and a check housing 2. The quick-opening housing 1 and the check housing 2 are fastened and fixed together. Both the quick-opening housing 1 and the check housing 2 have cavities that communicate vertically. The quick-opening housing 1 is equipped with an adjusting handle 3, a dial 4, a moving plate 5, and a fixed plate 6 from top to bottom. The check housing 2 is equipped with a check valve 7 (it should be noted that...). Figure 2 The check valve shown in the diagram is for illustrative purposes only. As it is a commonly used component, its internal structure is not detailed. The upper end of the check housing 2 abuts against the fixed plate 6.

[0024] Adjustment handle 3, dial 4, moving plate 5, and fixed plate 6 are all existing accessories, and their specific structures will not be described in detail.

[0025] In this embodiment, the moving and stationary plates of the quick-opening valve core are installed at the rear end of the check valve, which can protect the check valve and prevent it from being affected by the direct impact of the backflow water.

[0026] The quick-opening housing 1 has a valve core outlet 11 on its side wall. By rotating the adjusting handle 3, the dial 4 and the moving plate 5 are driven to rotate synchronously, so that the water inlet on the moving plate 5 is connected to the water inlet hole on the stationary plate 6 and the valve core outlet 11, so that water can flow.

[0027] The bottom of the check housing 2 is the valve core inlet 21. The upper part of the inner cavity of the check housing 2 has a reduced-diameter inner ring step 22 for the check valve 7 to be positioned and installed against it. When the check valve 7 is installed, a third sealing ring 83 is also fitted on its outer wall to prevent water from leaking along the gap between the check valve 7 and the inner cavity of the check housing 2, thus ensuring the one-way water guiding function of the check valve 7.

[0028] The top of the shell wall of the check valve housing 2 has a downwardly recessed first sealing ring groove 23, in which a first sealing ring 81 is placed. The first sealing ring 81 abuts against the bottom surface of the fixed plate 6, so that the check valve housing 2 and the fixed plate 6 are in sealed contact.

[0029] The bottom of the shell wall of the check valve housing 2 has an upwardly recessed second sealing ring groove 24, in which a second sealing ring 82 is placed. When the quick-opening valve core with check valve is installed, the second sealing ring 82 abuts against the bottom of the valve core cavity of the faucet body, thereby sealing the quick-opening valve core with the faucet body. The check valve 7 is confined between the check valve housing 2 and the bottom of the valve core cavity, eliminating the need for additional fasteners to restrict the check valve and simplifying the check valve fastening structure.

[0030] The bottom of the outer groove wall of the second sealing ring groove 24 extends radially inward to form a hook ring 241. In this embodiment, the outer side of the second sealing ring 82 may also be provided with a protruding sealing ring protrusion. After the second sealing ring 82 is inserted into the second sealing ring groove 24, the sealing ring protrusion will be hooked by the hook ring 241, so that the second sealing ring 82 will not easily fall off.

[0031] The top sidewall of the check housing 2 is recessed to form a check outer step 25, which abuts against the bottom of the quick-opening housing 1 for positioning and assembly. The upper part of the outer groove wall of the first sealing ring groove 23 extends radially outward to form an annular hook 231, thus forming a thinner hook structure with a reduced diameter on the outer groove wall of the first sealing ring groove 23, ensuring that the top of the check housing 2 can be inserted into the quick-opening housing 1. The bottom of the quick-opening housing 1 is correspondingly provided with a hook-shaped quick-opening hook 12, which cooperates with the annular hook 231 to snap the check housing 2 and the quick-opening housing 1 together.

[0032] During assembly, the quick-opening valve core with check valve is first inserted into the quick-opening housing 1 in sequence, consisting of the adjusting handle 3, dial 4, moving plate 5, and fixed plate 6. (It is worth noting that the installation of the adjusting handle 3 is existing technology, and in practice, accessories such as snap rings and small O-rings are also required, but this is not the focus of this application and will not be described in detail.) The fixed plate 6 is positioned and installed with the quick-opening housing 1 through a rotation-limiting structure (this is a common technical structure and will not be elaborated here). The first sealing ring 81 is installed in the first sealing ring groove 23 of the check housing 2. Then, the upper part of the check housing 2 is fastened and fixed to the quick-opening housing 1. At this time, the fixed plate 6 and the first sealing ring 81 abut against each other to form a water-proof seal, while also limiting the vertical positioning of the fixed plate 6. Then, the third sealing ring 83 is fitted onto the outside of the check valve 7, with the outlet end of the check valve 7 facing upwards, and inserted into the check housing 2. The top of the outer wall of the check valve abuts against the inner ring step 22 of the check valve. Finally, insert the second sealing ring 82 into the second sealing ring groove 2 at the bottom of the check housing 2, and fit the outer sealing ring 84 on the check housing 1 to prevent water leakage from the top, forming an integral quick-opening valve core with a check valve. (Alternatively, the check valve can be installed on the check housing first and then assembled together with the quick-opening housing.) This embodiment also provides a faucet, including a faucet body with an inlet channel and an outlet channel. A valve core cavity for accommodating a quick-opening valve core with a check valve is provided between the inlet and outlet channels. One end of the valve core cavity is connected to the inlet channel, and the other end is connected to the outlet channel. The valve core cavity is open. During installation, the quick-opening valve core with a check valve is directly inserted into the valve core cavity, with the valve core inlet 21 facing the inlet channel and the valve core outlet 11 facing the outlet channel. Rotating the adjusting handle 3 causes the moving plate 5 to rotate relative to the fixed plate 6, thus realizing the opening and closing of the quick-opening valve core and flow adjustment. Water enters the valve core inlet 21 of the quick-opening valve core with a check valve along the inlet channel of the faucet body, then enters the inlet end of the check valve 7, then exits from the outlet end of the check valve 7 into the fixed plate 6, then exits through the moving plate 5 and the valve core outlet 11, and finally exits from the outlet channel.

[0033] When water leaks from the quick-opening valve core or water pressure changes cause backflow, the check valve 7 acts as a flow stop, preventing water from flowing back from the valve core inlet 21 into the faucet's inlet channel, thus avoiding cross-contamination of the water source or damage to the equipment. This quick-opening valve core also has on / off flow regulation and backflow prevention functions, preventing water backflow caused by leakage from the quick-opening valve core or water pressure changes.

[0034] The above description is only a preferred embodiment of the present utility model and does not limit the scope of the present utility model. All equivalent changes and modifications made in accordance with the scope of the present utility model application should still fall within the scope of the present utility model.

Claims

1. A quick-opening valve core with a check valve, characterized in that, It includes a quick-opening housing (1) and a check housing (2). The quick-opening housing (1) and the check housing (2) are fixedly connected. The quick-opening housing (1) and the check housing (2) are both cavities that are connected vertically. A valve core outlet (11) is provided on the side wall of the quick-opening housing (1). An adjusting handle (3), a dial (4), a moving plate (5), and a fixed plate (6) are installed inside the quick-opening housing (1) from top to bottom. The bottom of the check housing (2) is the valve core inlet (21). A check valve (7) is installed inside the check housing (2). The upper end of the check housing (2) abuts against the fixed plate (6).

2. The quick-opening valve core with check valve as described in claim 1, characterized in that, The upper part of the inner cavity of the check housing (2) has a reduced-diameter inner ring step (22), and the check valve (7) can be offset against the inner ring step (22).

3. The quick-opening valve core with check valve as described in claim 1, characterized in that, The top of the shell wall of the check housing (2) has a downwardly recessed first sealing ring groove (23), in which a first sealing ring (81) is placed, and the first sealing ring (81) abuts against the bottom surface of the fixed plate (6).

4. The quick-opening valve core with check valve as described in claim 3, characterized in that, The bottom of the shell wall of the check housing (2) has an upwardly recessed second sealing ring groove (24), in which a second sealing ring (82) is placed.

5. The quick-opening valve core with check valve as described in claim 4, characterized in that, The bottom end of the outer groove wall of the second sealing ring groove (24) extends radially inward to form a hook ring (241).

6. The quick-opening valve core with check valve as described in claim 5, characterized in that, The outer side of the second sealing ring (82) is provided with a protruding sealing ring protrusion. After the second sealing ring (82) is inserted into the second sealing ring groove (24), the sealing ring protrusion will be hooked by the hook ring (241).

7. The quick-opening valve core with check valve as described in claim 1, characterized in that, The top sidewall of the check housing (2) is recessed to form a check outer step (25), which can abut against the bottom of the quick-opening housing (1).

8. The quick-opening valve core with check valve as described in claim 7, characterized in that, The upper part of the outer groove wall of the first sealing ring groove (23) extends radially outward to form an annular hook (231). The bottom of the quick-opening outer shell (1) is correspondingly provided with a hook-shaped quick-opening hook (12). The quick-opening hook (12) cooperates with the annular hook (231) to snap the check shell (2) and the quick-opening outer shell (1) together.

9. The quick-opening valve core with check valve as described in claim 1, characterized in that, The outer wall of the check valve (7) is also fitted with a third sealing ring (83).

10. A faucet, comprising a faucet body, characterized in that, The faucet body is provided with an inlet channel and an outlet channel. A valve core cavity is provided between the inlet channel and the outlet channel. One end of the valve core cavity is connected to the inlet channel and the other end is connected to the outlet channel. The valve core cavity is open. The valve core cavity is equipped with a quick-opening valve core with a check valve as described in any one of claims 1-9. When installing the quick-opening valve core with the check valve, it is directly inserted into the valve core cavity so that the valve core inlet (21) is opposite to the inlet channel and the valve core outlet (11) is opposite to the outlet channel.

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