A kind of one-way valve
Technical field
The utility model relates to a kind of valve, especially a kind of one-way valve that is used for the residential care product.
Background technique
Along with science and technology is constantly progressive, one-way valve is in the different field extensive use.One-way valve as folk prescription to controller, very high to one-way valve sealing and stability requirement.But there are a lot of shortcomings in existing one-way valve because design is unreasonable.Such as: pressure transient, there is potential safety hazard or the like problem in gas leakage.For example on July 7th, 2010, disclosed Chinese patent CN201521688U disclosed a kind of one-way valve; This one-way valve comprises upper connection, rubber pad, fastener, spring, lower contact successively, is respectively equipped with water inlet and osculum on the upper and lower joint, and an end of rubber pad is used to seal the water inlet of upper connection; The other end is connected with fastener; Three water chutes evenly are set on the outer circle wall of fastener, and an end of spring is connected with fastener, and the other end is connected to the osculum bottom of lower contact.It mainly is to have utilized fastener to make rubber pad can not produce inclination, thereby guarantees the seal of valve.But, because its fastener adopts the sleeve shape structure to match with the internal diameter of upper connection bottom, when its matching gap is too small, cause obstruction or stuck easily, thereby cause one-way valve to lose efficacy, cause and leak or leak gas; And when its matching gap is excessive, back and forth be easy to generate skew again in the active procedure, make that the pressure that acts on the rubber pad is unbalanced, thereby cause poor sealing, pressure transient etc.
The model utility content
The purpose of the utility model is to overcome the shortcoming of existing technology, and a kind of good airproof performance is provided, the one-way valve that stability is high.
The technological scheme that realizes the utility model is: a kind of one-way valve; Comprise and be provided with central passage and interconnective first joint and second joint; Corresponding first positioning step and second positioning step of being provided with in the passage of first joint and second joint is provided with elastic sealing device between first positioning step and second positioning step, and realizes being communicated with or separation of first joint and the second joint central passage through this elastic sealing device; It is characterized in that; Said elastic sealing device comprises seal ring, rigid spheres and pressure spring, and a side of said seal ring is fitted on first positioning step, and rigid spheres is arranged on the opposite side of seal ring; One end overhead of pressure spring is on rigid spheres and make rigid spheres compress seal ring, and the other end overhead of pressure spring is on second positioning step.
The leading portion of said second joint is plugged in first joint, and the front-end face of second joint contacts with seal ring, and seal ring is positioned on first positioning step.
The periphery of the said second joint leading portion is provided with annular groove, is arranged with second seal ring on the said annular groove, and by the sealing between the realization of second seal ring and first joint.
As the further improvement of the utility model, the angle angle of cut between said second joint front-end face and the central passage is a fillet, and central passage is at the size at this place diameter greater than rigid spheres.Like this when the rigid spheres pressurized, avoid rigid spheres caused stopping.
Said one-way valve is arranged on the water inlet path or steam passage of steam generator Heating core.Perhaps said one-way valve is arranged on the water inlet path of water pump or goes out on the water passage.Perhaps said one-way valve is arranged on the water inlet path or steam passage of steam iron.
The beneficial effect of the utility model is: owing to adopt rigid spheres to replace fastener; Because spheroid is not easy to produce skew and clamping stagnation; Thereby improve the sealing and stability of one-way valve; Avoided clamping stagnation or obstruction between fastener and the joint, inhomogeneous to rubber pad pressure when having avoided the fastener skew in addition avoids hidden danger such as gas leakage, inefficacy.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment one-way valve.
Embodiment
Be further described below in conjunction with the embodiment of accompanying drawing the utility model.
Shown in accompanying drawing 1, it comprises first joint, 1, the second joint 2 one-way valve in the present embodiment, rigid spheres 3, pressure spring 4, seal ring 5, second seal ring 6.First joint 1 and second joint 2 are provided with central passage, are provided with the periphery that is provided with the leading portion of second positioning step, 21, the second joints 2 in first positioning step, 11, the second joints in first joint 1 and are provided with annular groove 22, are arranged with second seal ring 6 on the annular groove 22.The angle angle of cut between second joint, 2 front-end faces and the central passage is a fillet 23, and central passage is at the size at this place diameter greater than rigid spheres.During assembling; Seal ring 5 is installed on first positioning step 11; Pressure spring 4 is installed on second positioning step 21, places rigid spheres 3 then, the leading portion of second joint 2 is plugged in first joint 1; And the front-end face of second joint 2 contacts with seal ring 5, and seal ring 5 is positioned on first positioning step 11.Simultaneously, realize sealing through second seal ring 6 between first joint 1 and second joint 2, and can link into an integrated entity through modes such as screw thread or buckle or welding.When as figure shown in A side's pressure during greater than B side, pressure spring 4 can shrink by pressurizeds, rigid spheres 3 can be separated with seal ring 5, central passage can be opened.When the B side's pressure shown in the figure was equal to or greater than A side, rigid spheres 3 can reset, and presses hard with seal ring 5, and central passage can be closed.Because what adopt is rigid spheres 3; When pressurized is inhomogeneous; Spheroid itself can rotate be regulated, and therefore can not cause unbalanced to seal ring 5 pressure, simultaneously also owing to adopt the sphere structure and second joint 2 to adopt fillets 23 structures; Therefore also be not easy to produce clamping stagnation and blocking phenomenon the generation of the situation of avoiding leaking gas, leak.
This one-way valve can be used for the Heating core of steam generator.For example one-way valve is arranged on the water inlet path or steam passage of steam generator Heating core.Perhaps this one-way valve can be used for water pump, for example is arranged on one-way valve on the water inlet path of water pump or goes out on the water passage.Perhaps this one-way valve can be used for steam iron, for example one-way valve is arranged on the water inlet path or steam passage of steam iron.