Alternating one-way valve
By adding a buffer reinforcement plate and a limit pin structure to the alternating check valve, the problem of excessive deformation of the spring under impact force is solved, the durability and reliability of the product are improved, and the maintenance frequency and cost are reduced.
Patent Information
- Application Number
- CN202520237056.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-14
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-02-14
AI Technical Summary
In traditional alternating check valves, the spring is easily subjected to strong impact forces when the fluid flow changes suddenly or the pressure fluctuates, leading to excessive deformation and fatigue damage, which reduces the reliability and lifespan of the product.
A buffer reinforcement plate is added to the spring. The first and second limit pins cooperate with the buffer reinforcement plate to form a stable limiting structure, which absorbs the impact force caused by sudden changes in fluid flow or pressure fluctuations and prevents the spring from moving excessively.
This effectively reduces excessive deformation and damage to the springs, significantly improves the product's durability and reliability, and reduces maintenance frequency and costs.
Smart Images
Figure CN223923428U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an alternating one-way valve. Background Technology
[0002] Alternating check valves are primarily used in hydraulic systems to control the alternating opening and closing of fluid circuits, enabling unidirectional fluid flow. In traditional alternating check valves, the spring is a core component, driving the movement of the valve stem. During actual operation, when the fluid flow changes suddenly or the pressure fluctuates significantly, the spring is subjected to strong impact forces. These impact forces can cause excessive deformation or even over-movement (movement beyond the normal operating range), accelerating spring fatigue and damage. This significantly reduces the spring's lifespan, necessitating frequent disassembly and maintenance, and severely compromising product reliability. Therefore, improvements and optimizations are implemented to address these issues. Utility Model Content
[0003] To solve the above problems, the technical problem to be solved by this utility model is to provide an alternating one-way valve.
[0004] The technical solution adopted by this utility model of alternating one-way valve is as follows: It includes a one-way valve body and a one-way valve core assembly disposed within the one-way valve body. The one-way valve core assembly comprises a one-way valve connector, a one-way valve stem, a spring, a buffer reinforcing plate, a first limiting pin, and a second limiting pin. The buffer reinforcing plate is provided with an auxiliary limiting port and a second through hole. The one-way valve connector has a connector water passage hole. From the inside to the outside, the one-way valve connector sequentially comprises a connector mating part, a connector receiving part, a connector connecting part, and a connector threaded part. The connector connecting part has a connector connecting hole. The one-way valve stem includes a valve stem. The valve column includes a docking section and a valve column sealing section. The outer wall of the valve column docking section is provided with a valve column receiving platform and a through valve column connecting hole. The center of the valve column docking section is provided with a valve column guide port that communicates with the valve column connecting hole and is used for positioning the buffer reinforcement plate. The first limiting pin connects the joint connecting hole and the auxiliary limiting port together. The second limiting pin connects the valve column connecting hole and the second through hole of the reinforcement plate together. The spring is sleeved on the buffer reinforcement plate, with one end abutting against the joint receiving section and the other end abutting against the valve column receiving platform.
[0005] One end of the auxiliary limiting port is provided with a first through hole in the reinforcing plate for the first limiting pin to pass through, and the middle part of the first limiting pin is provided with a first limiting pin guide groove corresponding to the auxiliary limiting port.
[0006] The connector receiving part is provided with a connector anti-detachment groove to prevent the spring from falling off.
[0007] The one-way valve body has a valve body communication cavity for the operation of the one-way valve stem, a first liquid inlet and a liquid outlet respectively communicating with the valve body communication cavity, and a connector mounting port for installing the one-way valve connector. The connector mounting port has a valve body thread groove for threaded connection of the connector threaded part.
[0008] The advantages of this utility model of alternating one-way valve are: by adding a buffer reinforcement plate to the spring, the impact force caused by sudden changes in fluid flow or pressure fluctuations is effectively absorbed, the excessive deformation and excessive movement of the spring are reduced, the durability and reliability of the product are significantly improved, and the maintenance frequency and cost are significantly reduced. Attached Figure Description
[0009] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0010] Figure 1 This is a half-sectional view of the alternating one-way valve of this utility model;
[0011] Figure 2 This is an exploded view of the valve core assembly of the one-way valve of this utility model;
[0012] Figure 3 This is a schematic diagram of the structure of the buffer reinforcement plate of this utility model;
[0013] Figure 4 This is a schematic diagram of the structure of the one-way valve connector of this utility model;
[0014] Figure 5 This is a schematic diagram of the structure of the one-way valve stem of this utility model;
[0015] Figure 6 This is a schematic diagram of the structure of the first limiting pin of this utility model;
[0016] Figure 7 This is a half-sectional view of the valve body of the one-way valve of this utility model. Detailed Implementation
[0017] like Figure 1-7As shown, the alternating one-way valve of this utility model includes a one-way valve body 1 and a one-way valve core assembly 2 disposed within the one-way valve body 1. The one-way valve core assembly 2 includes a one-way valve connector 3, a one-way valve stem 4, a spring 5, a buffer reinforcing plate 6, a first limiting pin 7, and a second limiting pin 8. The buffer reinforcing plate 6 is provided with an auxiliary limiting port 10 and a second through hole 11. The one-way valve connector 3 is provided with a connector water passage hole 18. The one-way valve connector 3 is provided with a connector mating part 14, a connector receiving part 15, a connector connecting part 16, and a connector threaded part 17 from the inside to the outside. The connector connecting part 16 is provided with a connector connecting hole 19. The one-way valve stem 4 includes a valve stem mating part 22 and a valve stem sealing part 23. The outer wall of the valve stem mating part 22 is provided with a valve stem receiving platform 24 and a through valve stem connecting hole 25. The center of the valve stem mating part 22 is provided with a valve stem connecting hole 25. The valve column guide port 26, which is used for positioning the buffer reinforcement plate 6, is connected by the first limiting pin 7, which connects the connector connection hole 19 and the auxiliary limiting port 10. The second limiting pin 8 connects the valve column connection hole 25 and the second through hole 11 of the reinforcement plate. The spring 5 is sleeved on the buffer reinforcement plate 6, with one end abutting against the connector receiving part 15 and the other end abutting against the valve column receiving platform 24. This makes the compression and release process of the spring 5 smoother and extends the service life of the spring. The buffer reinforcement plate 6 is provided with the auxiliary limiting port 10 and the second through hole 11 of the reinforcement plate. It works in conjunction with the first limiting pin 7 and the second limiting pin 8 to form a stable limiting structure. This design not only enhances the buffering capacity of the spring, but also prevents the spring from being damaged due to excessive movement, significantly improving the durability and reliability of the product, and significantly reducing the maintenance frequency and cost.
[0018] The auxiliary limiting port 10 has a first through hole 12 in the reinforcing plate for the first limiting pin 7 to pass through. The first limiting pin 7 has a first limiting pin guide groove 28 in the middle corresponding to the auxiliary limiting port 10, so that the movement of the first limiting pin 7 on the buffer reinforcing plate 6 is more stable and reliable.
[0019] The connector receiving part 15 is provided with a connector anti-dislodgement groove 20 to prevent the spring 5 from falling off, ensuring that the spring is subjected to uniform force during operation and avoiding fatigue damage caused by uneven load or local stress concentration.
[0020] The valve body 1 of the one-way valve is provided with a valve body communicating cavity 30 for the operation of the one-way valve stem 4, a first liquid inlet 31 and a liquid outlet 32 respectively communicating with the valve body communicating cavity 30, and a connector mounting port 33 for the installation of the one-way valve connector 3. The connector mounting port 33 is provided with a valve body thread groove 34 for the threaded connection of the connector threaded part 17. The structure layout is reasonable and easy to install and disassemble.
[0021] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model are included within the protection scope of the present utility model.
Claims
1. An alternating check valve comprising a check valve body (1) and a check valve spool assembly (2) disposed within the check valve body (1), characterized by: The one-way valve core assembly (2) comprises a one-way valve joint (3), a one-way valve stem (4), a spring (5), a buffer reinforcing plate (6), a first limiting pin (7) and a second limiting pin (8), the buffer reinforcing plate (6) is provided with an auxiliary limiting opening (10) and a reinforcing plate second through hole (11), the one-way valve joint (3) is provided with a joint water passing hole (18) inside, the one-way valve joint (3) is sequentially provided with a joint butt joint part (14), a joint receiving part (15), a joint connecting part (16) and a joint threaded part (17) from inside to outside, the joint connecting part (16) is provided with a joint connecting hole (19), the one-way valve stem (4) comprises a valve stem butt joint part (22) and a valve stem sealing part (23), the valve stem butt joint part (22) is provided with a valve stem receiving table (24) and a valve stem connecting hole (25) penetratingly arranged on the outer wall, the valve stem butt joint part (22) is provided with a valve stem guide opening (26) in the center and communicated with the valve stem connecting hole (25) and used for positioning the buffer reinforcing plate (6), the first limiting pin (7) connects the joint connecting hole (19) and the auxiliary limiting opening (10) together, the second limiting pin (8) connects the valve stem connecting hole (25) and the reinforcing plate second through hole (11) together, the spring (5) is sleeved on the buffer reinforcing plate (6), one end of the spring (5) abuts against the joint receiving part (15) and the other end of the spring (5) abuts against the valve stem receiving table (24).
2. The alternating check valve of claim 1, wherein: One end of the auxiliary limiting opening (10) is provided with a reinforcing plate first through hole (12) for penetrating the first limiting pin (7), the middle part of the first limiting pin (7) is provided with a first limiting pin guide groove (28) corresponding to the auxiliary limiting opening (10).
3. The alternating check valve of claim 1, wherein: The joint receiving part (15) is provided with a joint anti-falling groove (20) for preventing the spring (5) from falling off.
4. The alternating check valve of claim 1, wherein: The one-way valve body (1) is internally provided with a valve body communication cavity (30) for the action of the one-way valve stem (4), a first liquid inlet (31), a liquid outlet (32) respectively communicated with the valve body communication cavity (30) and a joint mounting opening (33) for mounting the one-way valve joint (3), the joint mounting opening (33) is provided with a valve body threaded groove (34) for threaded connection of the joint threaded part (17).