A self-closing flushing valve

Abstract

This utility model relates to the field of bathroom equipment, and in particular to a self-closing flush valve. Its structure includes: a valve body with inlet pipes installed at its upper and lower interfaces; the valve body includes an outer shell; a valve core installed inside the outer shell; the valve core is movably connected to the outer shell; and a push head for pushing is connected to one side of the valve core. A removable inspection cover is also provided on the surface of the outer shell. The outer shell is connected to the inlet and outlet pipes via upper and lower connecting studs. The push head includes a first valve cover and a second valve cover. The improved device uses the first and second valve covers for rotatable engagement. In normal use, pressing the head of the first valve cover will not accidentally touch the second valve cover. In an emergency, the second valve cover can be rotated to press against the surface of the outer shell for forced reset. Furthermore, the sealing through a sealing ring and sealing plate avoids the need for threaded sleeves, preventing jamming during emergency use and making it more convenient to use.

Description

Technical Field

[0001] This utility model relates to a bathroom device, and more particularly to a self-closing flush valve. Background Technology

[0002] A self-closing flush valve is an automatic flushing device used in sanitary facilities such as toilets and latrines. It has an automatic shut-off function, eliminating the need for manual shut-off and effectively saving water and preventing water waste.

[0003] The existing self-closing flushing valve uses a spring to reset the handle during use. However, after prolonged use, the spring may become fatigued and fail to reset, requiring manual reset during use. Furthermore, the pulling force caused by the spring prevents the internal water passage from closing completely, which is quite troublesome. Utility Model Content

[0004] This invention provides a self-closing flushing valve, which can effectively solve the above problems.

[0005] This utility model is implemented as follows:

[0006] A self-closing flushing valve includes: a valve body with inlet pipes installed at its upper and lower interfaces; the valve body includes an outer shell and a valve core installed inside the outer shell, the valve core being movably connected to the outer shell, and a push head for pushing is connected to one side of the valve core; a removable inspection cover is also provided on the surface of the outer shell; the outer shell is connected to the inlet pipe and the outlet pipe via upper and lower connecting studs; the push head includes a first valve cover and a second valve cover, the second valve cover and the threaded sleeve on the surface of the first valve cover being rotatably extended and retracted; a spring is provided inside the first valve cover that abuts against the surface of the outer shell, and the spring pushes the push head to press and reset.

[0007] As a further improvement, the first valve cover is nested with a threaded sleeve.

[0008] As a further improvement, a sealing ring is provided between the first valve cover and the second valve cover, and the sealing ring is made of an elastic material.

[0009] As a further improvement, a sealing plate is bonded to the side of the second valve cover away from the first valve cover.

[0010] As a further improvement, the outer casing has an outwardly protruding column that mates with the pressing head, and the side of the second valve cover with the sealing plate is fitted with the column with a clearance.

[0011] As a further improvement, the movable rod surface of the valve core is provided with threads that engage with the internal threads of the first valve cover, and a nut is also provided to cooperate with the movable rod to lock the first valve cover.

[0012] As a further improvement, the second valve cover rotates away from the first valve cover and can fit against the surface of the housing.

[0013] As a further improvement, the surface of the second valve cover is provided with protrusions.

[0014] As a further improvement, the sealing plate is a rubber ring.

[0015] The beneficial effects of this utility model are: the improved device uses the first valve cover and the second valve cover to rotate and cooperate. In normal use, pressing the head of the first valve cover will not accidentally touch the second valve cover. In an emergency, the second valve cover can be rotated to press against the surface of the outer shell for forced reset. Moreover, the sealing through the sealing ring and sealing plate can avoid the need for threaded sleeves, and can prevent jamming in emergency use, making it more convenient to use. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model 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 a self-closing flushing valve according to the present invention.

[0018] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0019] Figure 3 This is a schematic diagram of the structure of the pressing head of this utility model.

[0020] Figure 4 This is a schematic diagram of the exploded structure of this utility model.

[0021] Figure 5 This is a schematic diagram of the exploded structure of this utility model.

[0022] The attached figures are labeled as follows:

[0023] 1. Inlet pipe; 2. Valve body; 3. Outlet pipe;

[0024] 21. Press head; 22. Valve core; 23. Housing; 24. Connecting stud; 25. Inspection cover;

[0025] 211. First valve cover; 212. Threaded sleeve; 213. Sealing ring; 214. Second valve cover; 215. Sealing plate; 216. Spring. Detailed Implementation

[0026] 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. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0027] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] Existing self-closing flushing valves rely on a spring to reset the handle during use. However, after prolonged use, spring fatigue can prevent it from resetting, necessitating manual reset. Furthermore, the pulling force from the spring prevents the internal water passages from closing completely, which is quite inconvenient. Therefore, to solve the above problems, this paper proposes the following technical solution:

[0029] Reference Figures 1-5 As shown, a self-closing flushing valve includes: a valve body 2, with an inlet pipe 1 installed at the upper and lower interfaces of the valve body 2; the valve body 2 includes a housing 23; a valve core 22 is installed inside the housing 23; the valve core 22 is movably connected to the housing 23; and a push head 21 for pushing is connected to one side of the valve core 22; a detachable inspection cover 25 is also provided on the surface of the housing 23; the housing 23 is connected to the inlet pipe 1 and the outlet pipe 3 through upper and lower connecting studs 24; the push head 21 includes a first valve cover 211 and a second valve cover 214; the second valve cover 214 rotates and extends with the threaded sleeve 212 on the surface of the first valve cover 211; a spring 216 is provided inside the first valve cover 211 that abuts against the surface of the housing 23; the spring 216 pushes the push head 21 to press and reset.

[0030] In this embodiment, the main structure of the device includes a valve body 2. The upper and lower ends of the valve body 2 are respectively provided with an inlet pipe 1 and an outlet pipe 3 for connecting to the wall water pipe. The valve body 2 causes the valve core 22 inside to move by pressing, thereby opening and closing the flow channel in the inner cavity of the outer shell 23. Under the action of the spring 216 of the pressing head 21, the valve core 22 slowly resets and then closes again, realizing self-closing flushing. An inspection cover 25 is provided on one side of the outer shell 23. The valve core 22 can be disassembled and assembled by unscrewing the inspection cover 25. The outer shell 23 is connected to the inlet pipe 1 and the outlet pipe 3 by the upper and lower connecting studs 24.

[0031] Because prolonged use can cause the spring 216 to rebound slowly or not at all, it may fail to reset the valve core 22 when the water pressure is high. To address this, this device is optimized by setting the pressing head 21 into two parts: a first valve cover 211 and a second valve cover 214. The first valve cover 211 and the second valve cover 214 are connected by a threaded sleeve 212 and are engaged by rotation. When the valve core 22 fails to rebound and manual intervention is required, the second valve cover 214 is rotated to press against the surface of the outer shell 23, allowing the pressing head 21 to forcibly pull the valve core 22 to reset.

[0032] During prolonged use, water inevitably seeps into the threaded sleeve 212, causing the threaded sleeve 212 to become stuck in the internal threads of the second valve cover 214. Therefore, the seam between the second valve cover 214 and the first valve cover 211 is sealed by a sealing ring 213. A sealing plate 215 is provided on the other side of the second valve cover 214 for sealing. The sealing plate 215 can cooperate with the movable column of the outer shell 23, and the edge of the sealing plate 215 is relatively thin, so that it can still seal without affecting the movement of the first valve cover 211.

[0033] The improved device uses a rotating engagement between the first valve cover 211 and the second valve cover 214. In normal use, pressing the head of the first valve cover 211 will not accidentally touch the second valve cover 214. In an emergency, the second valve cover 214 can be rotated to press against the surface of the outer casing 23 for forced reset. The sealing ring 213 and the sealing plate 215 can avoid the need for the threaded sleeve 212 to assist, thus preventing jamming during emergency use and making it more convenient to use.

[0034] The above description only outlines the basic principles and preferred embodiments of this utility model. Those skilled in the art can make many changes and improvements based on the above description, and these changes and improvements should fall within the protection scope of this utility model.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A self-closing flush valve, the structure comprising: Valve body (2), wherein the upper and lower interfaces of the valve body (2) are equipped with water inlet pipes (1), characterized in that: The valve body (2) includes a housing (23) and a valve core (22) installed inside the housing (23). The valve core (22) is movably connected to the housing (23), and a push head (21) for pushing is connected to one side of the valve core (22). A detachable maintenance cover (25) is also provided on the surface of the housing (23). The housing (23) is connected to the water inlet pipe (1) and the water outlet pipe (3) through upper and lower connecting studs (24). The push head (21) includes a first valve cover (211) and a second valve cover (214). The second valve cover (214) rotates and extends with the threaded sleeve (212) on the surface of the first valve cover (211). A spring (216) is provided inside the first valve cover (211) that abuts against the surface of the housing (23). The spring (216) pushes the push head (21) to press and reset.

2. A self-closing flush valve as defined in claim 1, wherein: The first valve cover (211) and the threaded sleeve (212) are nested together.

3. A self-closing flush valve as defined in claim 1 wherein: A sealing ring (213) is provided between the first valve cover (211) and the second valve cover (214), and the sealing ring (213) is made of elastic material.

4. A self-closing flush valve as defined in claim 3 wherein: A sealing plate (215) is bonded to the side of the second valve cover (214) away from the first valve cover (211).

5. A self-closing flush valve as defined in claim 1 wherein: The outer casing (23) has a column protruding outwards that cooperates with the pressing head (21), and the second valve cover (214) has a sealing plate (215) installed on one side that is in clearance fit with the column.

6. A self-closing flush valve as defined in claim 1 wherein: The movable rod surface of the valve core (22) is provided with threads that engage with the internal threads of the first valve cover (211), and a nut is also provided to cooperate with the movable rod to lock the first valve cover (211).

7. A self-closing flush valve as defined in claim 5 wherein: The second valve cover (214) rotates away from the first valve cover (211) and can fit against the surface of the housing (23).

8. A self-closing flush valve as defined in claim 7 wherein: The surface of the second valve cover (214) is provided with protrusions.

9. A self-closing flush valve as defined in claim 5 wherein: The sealing plate (215) is a rubber ring.

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