Check valve capable of being automatically opened and closed
By designing an automatically opening and closing check valve, the sliding of the valve core is controlled by fluid pressure, which solves the problem that existing check valves require manual or electric control, achieving automatic opening and closing and pressure stabilization, and reducing pressure shocks.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-31
- Publication Date
- 2026-03-24
AI Technical Summary
Existing flow valves require manual or electronic control systems to operate, which are complex or time-consuming and labor-intensive, and cannot achieve automatic opening and closing.
A one-way valve comprising a valve body, a valve core assembly, and a spring was designed. The opening and closing of the valve core are automatically controlled by fluid pressure, and the automatic opening and closing of the valve is achieved by utilizing the spring force and the fluid pressure difference.
It enables automatic opening and closing of the check valve, maintains stable pressure in the pipeline or container, reduces pressure shock, improves system efficiency, and mitigates water hammer effect.
Smart Images
Figure CN224033168U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a single -flow valve of automatic opening and closing. BACKGROUND
[0002] Single -flow valve (also called check valve, one -way valve) is a kind of valve for controlling fluid one -way flow, its core function is to prevent medium backflow, guarantee system safe and stable operation.
[0003] The existing single -flow valve needs to manually control switch or to control switch by electric control system, the former is time -consuming and labor -intensive, and the latter is complex structure.
[0004] Therefore, a kind of simple structure single -flow valve of automatic opening and closing is needed. SUMMARY
[0005] The utility model discloses a kind of single -flow valves of automatic opening and closing, including valve body, the inside of the valve body is equipped with valve cavity, one side of the valve cavity is equipped with liquid inlet chamber, the liquid inlet chamber is equipped with liquid inlet, the other side of the valve cavity is equipped with liquid outlet chamber, the liquid outlet chamber is equipped with liquid outlet, the valve cavity is horizontally equipped with the liquid passage valve port for intercommunication liquid inlet chamber and liquid outlet chamber, the valve core assembly is movably equipped on the liquid passage valve port, the valve core assembly slides in the valve cavity, the top of the valve cavity is equipped with overhaul valve port, the overhaul valve port is equipped with valve cover, spring is connected between the valve cover and valve core assembly.
[0006] Preferably, the liquid passage valve port is equipped with lower sealing bushing sealed with valve core assembly, the valve core assembly includes valve core body, piston sleeve, upper sealing bushing and fastening nut, the valve core body is equipped with stud, the stud is sequentially equipped with upper sealing bushing, piston sleeve and compression nut from bottom to top, the compression nut is threadedly connected with stud, the piston sleeve is slidingly sealed with the inner wall of valve cavity, the top of the piston sleeve is equipped with boss, the boss is connected with the lower end of spring.
[0007] Preferably, the valve cover is threadedly connected on the overhaul port, the side of the valve cover is equipped with sealing ring, the bottom of the valve cover is equipped with containing recess for accommodating spring, the containing recess is connected with the upper end of spring.
[0008] Preferably, the upper sealing bushing and lower sealing bushing are rubber bushing;The rigidity of the valve core body is greater than the rigidity of the upper sealing bushing and lower sealing bushing.
[0009] Preferably, the bottom of the valve core body is equipped with guide frame matched with the liquid passage valve port.
[0010] The single-way valve capable of automatic opening and closing has the advantages that the single-way valve can be automatically opened and closed according to fluid pressure, the pressure in a pipeline or a container is kept stable, system efficiency is improved, the single-way valve is slowly closed through gradual reduction of fluid pressure, pressure impact can be effectively relieved, and water hammer effect is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 is a schematic view of the utility model.
[0012] Figure 2 is a split schematic view of the utility model. DETAILED DESCRIPTION
[0013] The specific implementation of the utility model is described further below in combination with the drawings and examples.
[0014] The specific implementation of the utility model is described further below in combination with the drawings and examples.
[0015] As shown in Figure 1 and Figure 2 A single-way valve capable of automatic opening and closing, comprising a valve body 1, a valve cavity 2 is arranged inside the valve body 1, a liquid inlet cavity 3 is arranged on one side of the valve cavity 2, a liquid inlet 4 is arranged on the liquid inlet cavity 3, a liquid outlet cavity 5 is arranged on the other side of the valve cavity 2, a liquid outlet 6 is arranged on the liquid outlet cavity 5, a liquid passing valve port 7 for connecting the liquid inlet cavity 3 and the liquid outlet cavity 5 is horizontally arranged in the valve cavity 2, a valve core assembly 8 is movably arranged on the liquid passing valve port 7, the valve core assembly 8 slides up and down in the valve cavity 2, a maintenance valve port 9 is arranged on the top of the valve cavity 2, a valve cover 10 is arranged on the maintenance valve port 9, and a spring 11 is connected between the valve cover 10 and the valve core assembly 8.
[0016] The liquid passing valve port 7 is provided with a lower sealing bush 12 in sealing cooperation with the valve core assembly 8, the valve core assembly 8 comprises a valve core body 81, a piston sleeve 84, an upper sealing bush 83 and a fastening nut 85, studs 82 are arranged on the valve core body 81, the upper sealing bush 83, the piston sleeve 84 and the compression nut 85 are sequentially arranged on the studs 82 from bottom to top, the compression nut 85 is threadedly connected with the studs 82, the piston sleeve 84 is in sliding sealing cooperation with the inner wall of the valve cavity 2, a boss is arranged on the top of the piston sleeve 84, and the boss is connected with the lower end of the spring 11; specifically, the fastening nut 85 is threadedly connected on the studs 82 of the valve core body 81, and the piston sleeve 84 and the upper sealing bush 83 are compressed and fixed on the valve core body 81.
[0017] The valve cover 10 is screwed on the manhole 9, the side of the valve cover 10 is provided with a sealing ring, the bottom of the valve cover 10 is provided with a containing groove 14 for accommodating the spring 11, and the containing groove 14 is connected with the upper end of the spring 11; specifically, the valve cover 10 is used for closing the manhole 9 and mounting the spring 11, and the manhole 9 is convenient for checking the sealing performance of the valve core assembly 8 and the performance of the spring 11.
[0018] The upper sealing bushing 83 and the lower sealing bushing 12 are rubber bushings; the rigidity of the valve core body 81 is greater than that of the upper sealing bushing 83 and the lower sealing bushing 12.
[0019] The bottom of the valve core body 81 is provided with a guide frame 13 matched with the liquid passing valve port 7; specifically, the guide frame 13 moves up and down in the liquid passing valve port 7, which is beneficial to improve the stability of the valve core assembly 8 sliding up and down on the valve cavity 2.
[0020] In use, the spring force of the spring 11 exerts a downward force on the valve core assembly 8; when the fluid pressure is greater than the spring force of the spring 11, the spring 11 is compressed under force, the valve core assembly 8 moves upward along the valve cavity 2, the inlet chamber 3 and the outlet chamber 5 are connected, the check valve is opened, and the fluid flows from the inlet chamber 3 to the outlet chamber 5;
[0021] When the fluid pressure is less than the spring force of the spring 11, the reset force of the spring 11 slowly moves the valve core assembly 8 downward due to the gradual decrease of the fluid pressure, and finally the valve core assembly 8 is blocked on the liquid passing valve port 7, the inlet chamber 3 is disconnected with the outlet chamber 5, the check valve is closed, the slow closing of the check valve is realized, the pressure impact is effectively relieved, and the water hammer effect is reduced.
[0022] The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application.
Claims
1. A one-way valve that can be automatically opened and closed, characterized in that: The valve includes a valve body, which has a valve cavity inside. One side of the valve cavity has an inlet chamber with an inlet, and the other side of the valve cavity has an outlet chamber with an outlet. A liquid-passing valve port for connecting the inlet chamber and the outlet chamber is horizontally arranged inside the valve cavity. A valve core assembly is movably mounted on the liquid-passing valve port and slides up and down inside the valve cavity. A maintenance valve port is provided at the top of the valve cavity, and a valve cover is provided on the maintenance valve port. A spring connects the valve cover and the valve core assembly.
2. The automatically opening and closing single-flow valve according to claim 1, characterized in that, The liquid-passing valve port is provided with a lower sealing bushing that seals with the valve core assembly. The valve core assembly includes a valve core body, a piston sleeve, an upper sealing bushing, and a fastening nut. The valve core body is provided with a stud. The stud passes through the upper sealing bushing, the piston sleeve, and the clamping nut sequentially from bottom to top. The clamping nut is threadedly connected to the stud. The piston sleeve slides and seals against the inner wall of the valve cavity. The top of the piston sleeve is provided with a boss, which is connected to the lower end of the spring.
3. The automatically opening and closing one-way valve according to claim 2, characterized in that, The valve cover is threaded onto the inspection valve port. A sealing ring is provided on the side of the valve cover, and a receiving groove for accommodating the spring is provided at the bottom of the valve cover. The receiving groove is connected to the upper end of the spring.
4. The automatically opening and closing single-flow valve according to claim 3, characterized in that, Both the upper and lower sealing bushings are rubber bushings; the rigidity of the valve core is greater than that of the upper and lower sealing bushings.
5. A one-way valve capable of automatic opening and closing according to claim 4, characterized in that, The bottom of the valve core is provided with a guide frame that cooperates with the liquid-passing valve port.