CN201407409Y

CN201407409Y - Vent valve

Info

Publication number: CN201407409Y
Application number: CN2009201433921U
Authority: CN
Inventors: 汪军平
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-03-14
Filing date: 2009-03-14
Publication date: 2010-02-17
Anticipated expiration: 2019-03-14

Abstract

The utility model discloses a vent valve, which comprises a valve body (1), an floating barrel (2) and a floating ring (3), wherein a valve cap (4) is arranged above the valve body (1); the floating barrel (2) is a hollow sealed body and is positioned in the valve body (1); a guide shaft (15) is fixed in the center of the floating barrel; the two ends of the guide shaft (15) are respectively positioned in the central through holes of an upper bracket (13) and a lower bracket (15); the floating ring (3) is also a hollow sealed body and is positioned above a step in the valve body; a plurality of apertures (8) are formed above the floating ring (3); a seal ring (10) is arranged on the floating ring (3); a main air vent (16) is formed in the central position of the valve cap (4); and a planematched with the seal ring (7) is arranged above the floating barrel (2), so that when the floating barrel (2) rises and is squeezed on the seal ring (7), the main air vent (16) is closed. The utilitymodel can guarantee safety in the pipeline, and effectively avoid damage caused by pump stoppage due to sudden power failure.

Description

A kind of outlet valve

Technical field

The utility model relates to a kind of outlet valve, the outlet valve that especially a kind of water supply line is used.

Background technique

Outlet valve is mainly used on the various liquid medium pipelines, and its function is the air in the offtake piping system, improves the transfer efficiency of water pump, and sucks air when negative pressure appears in pipe-line system, guarantees the safety of pipe-line system.The valve body inner float ball of existing outlet valve rises under the buoyancy of water effect and forms sealing pair with the relief opening rubber ring and block the method that relief opening prevents that medium from leaking and realize allomeric function, with the efficient and the unlikely distortion of protection pipeline that improve transporting water equipment, break.But when having gas to produce in the valve body once more, ball float but can't descend because of the buoyancy of water effect, can not open once more with the relief opening rubber seal, lost the function of continuous exhaust pneumatic wallop, safety to pipeline has caused influence, if run into fault simultaneously, occurs having a power failure suddenly, can not in time enter gas in the pipeline, easily agree with damaging.

The model utility content

The purpose of this utility model be exactly solve existing outlet valve can not continuous exhaust pneumatic wallop and burst cause the problem of damage when shutting down to pipeline.

The technical solution adopted in the utility model is: a kind of outlet valve, it is characterized in that it comprises valve body, keg float and floating ring, the top of valve body is provided with the valve gap that is connected with valve seal, be respectively equipped with upper bracket and lower support frame on valve body and the valve gap, the center of two stands is provided with coaxial through hole, and keg float is that the seal of hollow is positioned at valve body, and center fixation has the axis of guide, the two ends of the axis of guide lay respectively in upper bracket and the lower support frame central through bore, and keg float is moved up and down guiding; Valve body is the different ring-shaped steps that form of diameter up and down, and floating ring also is the seal of hollow, and floating ring is positioned on the step; The corresponding valve gap in floating ring top is provided with several apertures, floating ring is provided with the seal ring corresponding with aperture, make floating ring can seal up aperture when rising, the middle position of valve gap is provided with main vent, be fixed with seal ring around the main vent of valve gap, the keg float top is provided with the plane that cooperates with seal ring, makes keg float rise when being squeezed on the seal ring, seals main vent.

Adopt technique scheme, valve body is fixed on the pipeline during use, and gas in the pipeline and water enter in the valve body from the lower end of valve body, along with increasing of gas and water, keg float will float, and main vent will be sealed in the upper end of keg float, when water continues to rise, floating ring also floats and seals aperture, thereby makes valve body become Seal cage, and the gas that discharges in the liquid will be in the valve body inner accumulated, after pressure acquires a certain degree, floating ring descends under action of gravity, opens several apertures simultaneously, in time discharges gas.Keg float still rests on closed position under the pressure effect in pipeline.When outage during termination of pumping, or when negative pressure occurring in the pipeline, the liquid level in the outlet valve descends rapidly, and keg float falls under self gravitation and the effect of valve external and internal pressure difference, opens main vent, sucks a large amount of air.

For making convenient the flowing of liquid in the valve body, lower support frame is provided with sphere shape air guide sleeve.Make the hydraulic flow in the valve body more smooth by air guide sleeve.

For preventing that dust from entering aperture from the top, seal aperture, the valve gap top is provided with dust-proof cover, and dust-proof cover is fixed on the valve gap by column.

In sum, the beneficial effects of the utility model are: because this reality has novel aperture can discharge the interior gas of valve body at any time, therefore can ensure the pressure security in the pipeline; Owing to be provided with main vent, can prevent the damage that the sudden power termination of pumping causes effectively.

Description of drawings

Fig. 1 is the utility model structural representation.

Among the figure, 1, valve body, 2, keg float, 3, floating ring, 4, valve gap, 5, column, 6, dust-proof cover, 7, seal ring, 8, aperture, 9, O type circle, 10, seal ring, 11, air guide sleeve, 12, pad blob of viscose, 13, upper bracket, 14, lower support frame, 15, the axis of guide, 16, main vent.

Embodiment

A kind of outlet valve of the utility model, as shown in Figure 1, it comprises valve body 1, keg float 2 and floating ring 3, and the top of valve body 1 is provided with the valve gap 4 that is connected with valve seal, and valve gap 4 is by the sealing of O type circle 9 realizations with valve body 1.Be respectively equipped with upper bracket 13 and lower support frame 14 on valve body 1 and the valve gap 4, the center of two stands is provided with coaxial through hole, keg float 2 is positioned at valve body 1 for the seal of hollow, center fixation has the axis of guide 15, the two ends of the axis of guide 15 lay respectively in upper bracket 13 and lower support frame 14 central through bores, and keg float 2 is moved up and down guiding; Valve body is the different ring-shaped steps that form of diameter about in the of 1, and floating ring 3 also is the seal of hollow, and floating ring 3 is positioned on the step; The corresponding valve gap in floating ring top is provided with several apertures 8, floating ring 3 is provided with the seal ring 10 corresponding with aperture 8, make floating ring 3 can seal up aperture 8 when rising, the middle position of valve gap 4 is provided with main vent 16, be fixed with seal ring 7 around the main vent of valve gap 4, keg float 2 tops are provided with the plane that cooperates with seal ring 7, make keg float 2 rise when being squeezed on the seal ring 7, seal main vent 16.Lower support frame 14 is provided with sphere shape air guide sleeve 11.Valve gap 4 tops are provided with dust-proof cover 6, and dust-proof cover 6 is fixed on the valve gap by column 5.For making 2 times shift-ins of keg float not clash into air guide sleeve 11, above lower support frame 14, be provided with pad blob of viscose 12, buffering when keg float 2 is fallen.

Claims

1, a kind of outlet valve, it is characterized in that it comprises valve body [1], keg float [2] and floating ring [3], the top of valve body [1] is provided with the valve gap [4] that is connected with valve seal, be respectively equipped with upper bracket [13] and lower support frame [14] on valve body [1] and the valve gap [4], the center of two stands is provided with coaxial through hole, keg float [2] is positioned at valve body [1] for the seal of hollow, center fixation has the axis of guide [15], the two ends of the axis of guide [15] lay respectively in upper bracket [13] and lower support frame [14] central through bore, and keg float [2] is moved up and down guiding; Valve body [1] is the different ring-shaped steps that form of diameter up and down, and floating ring [3] also is the seal of hollow, and floating ring [3] is positioned on the step; The corresponding valve gap [4] in floating ring [3] top is provided with several apertures [8], floating ring [3] is provided with the seal ring [10] corresponding with aperture [8], make floating ring [3] can seal up aperture [8] when rising, the middle position of valve gap [4] is provided with main vent [16], the main vent [16] of valve gap [4] is fixed with seal ring [7] on every side, keg float [2] top is provided with the plane that cooperates with seal ring [7], makes when keg float [2] rising is squeezed on the seal ring [7], seals main vent [16].

2, outlet valve according to claim 1 is characterized in that lower support frame [14] is provided with sphere shape air guide sleeve [11].

3, outlet valve according to claim 1 and 2 is characterized in that described valve gap [4] top is provided with dust-proof cover [6], and dust-proof cover [6] is fixed on the valve gap [4] by column [5].