CN202001617U

CN202001617U - Float ball valve

Info

Publication number: CN202001617U
Application number: CN2011200248719U
Authority: CN
Inventors: 朱铁强; 腾达; 左正良
Original assignee: HUNAN PUMP VALVE MANUFACTORY CO Ltd
Current assignee: HUNAN PUMP VALVE MANUFACTORY CO Ltd
Priority date: 2011-01-26
Filing date: 2011-01-26
Publication date: 2011-10-05
Anticipated expiration: 2021-01-26

Abstract

The utility model discloses a float ball valve comprising a valve body, a valve plate on the valve body, and a valve rod on the valve plate. The float ball valve is characterized in that a bracket is arranged in the valve body, the valve rod is sheathed on the bracket and matched with the bracket in a sliding manner, a guide rod is installed on the valve body, a floating body is arranged below the valve plate and contacted with the valve plate, a guiding ear hole is arranged on the floating body and matched with the guide rod in a sliding manner, and the floating body is provided with a ball valve and an exhaust valve for introducing and discharging water. The float ball valve is characterized in that the floating body is in non-rigid-connection with the valve plate, the opening of the valve plate is realized according to the self gravity and the impulsive force of water flow, and the closing of the valve plate is realized by the thrust force of the floating body. The swaying and the blocking caused by washing the floating body due to the water flow when the valve is switched on is eliminated due to the non rigid connection, so that the running stability of the valve is improved; in addition, the buoyancy of the floating body of the valve can be adjusted. The float ball valve is suitable for low-pressure or ultra-low-pressure work conditions, reliable in running, stable in performance, easy to maintain, long in service life, and low in construction cost.

Description

A kind of float valve

Technical field

The utility model relates to a kind of valve, particularly relates to a kind of water storage container water level float valve of control automatically that is used for.

Technical background

Chinese patent 92235376.X discloses a kind of piston type float valve, is characterized in that flange one end that is equivalent to the valve plug parts is provided with elastic plug, and the other end stretches out sleeve pipe and connects firmly buoyancy aid outward.Utilize the suffered buoyancy of buoyancy aid to promote valve plug and seal or open valve automatically.

But in the practical application, there are two big defectives in above structure: the one, and the structure that buoyancy aid is fixedlyed connected with the valve plug part, because when medium pours container by valve, can in container, produce big wave, buoyancy aid is subjected to impacting bigger in container, and operation jam even fracture appear in the bar that buoyancy aid is connected with valve plug; The 2nd, buoyancy aid is a whole obturator, and buoyancy is unadjustable.So the float valve of above structural type is not safe and reliable when practical application.

The model utility content

Technical problem to be solved in the utility model provide a kind of can shock resistance, reliable, stable performance, the float valve of safeguarding easily.

In order to solve the problems of the technologies described above, the float valve that the utility model provides, comprise the valve plate on valve body, the valve body, valve plate is provided with valve rod, is provided with support in the valve body, and valve stem casing is located on the support and is slidingly matched with support, guide rod is installed on the valve body, be provided with buoyancy aid below valve plate, buoyancy aid contacts with valve plate, and buoyancy aid is provided with the guiding earhole and guide rod is slidingly matched.

As improvement of the present utility model, described buoyancy aid is provided with the ball valve of into water and draining and is provided with outlet valve.

Replenish as one of the present utility model, its buoyancy aid number can be single also can be a plurality of, when adopting a plurality of buoyancy aids to be positioned at the valve plate below, connect by connected element between each buoyancy aid, and contact with valve plate by connected element, perhaps a plurality of buoyancy aids are positioned at the top of valve plate, and each buoyancy aid is connected with connected element by compliant member, and this connected element is fixedlyed connected with valve plate.

Characteristics of the present utility model are buoyancy aids with valve plate between adopt non-rigid the connection, the unlatching of valve plate relies on deadweight and impulsive force to realize, then relies on the thrust of buoyancy aid when closing.Current washed away buoyancy aid and rocking and jam of causing when non-rigid connection can be eliminated valve opening, improved the valve operation stability.

The buoyancy that another characteristics of the present utility model are buoyancy aids is adjustable.Because valve is mainly realized sealing by the buoyancy of buoyancy aid, buoyancy is slightly larger than calculates the gained sealing force, and the calculating of sealing force can be greater than actual seal pressure, thus when practical application often valve just closed being lower than the more position of design water level, cause the waste in pool volume space.After ball valve and outlet valve are set on the buoyancy aid, can be similar to boats and ships, submarine come-up, dive principle according to the actual water level requirement, by in buoyancy aid, adding water or draining,, and then can reach the pond design water level fully with adjusting buoyancy.And when sealed member is aging, when needing to increase seal pressure and just can close sealing tight, the buoyancy aid emptying can be made the buoyancy that is imbued with discharge again, and then prolong valve working life.

In sum, adopt the float valve of technique scheme, having can shock resistance, and reliable, stable performance safeguards that easily advantages such as buoyancy can regulate can be applied to the water storage container water level and control automatically.

Description of drawings

Fig. 1 is an angie type floating ball valve structure schematic representation of the present utility model.

Fig. 2 is an axial flow floating ball valve structure schematic representation of the present utility model.

Fig. 3, Fig. 4 are respectively the different many float types floating ball valve structure schematic representation of the utility model.

Embodiment

Referring to Fig. 1 or Fig. 2, the utility model comprises valve body 1, valve plate 6 on the valve body 1, valve plate 6 is provided with valve rod 3, wherein valve body 1 top form can be angie type (referring to Fig. 1), also can be axial flow (referring to Fig. 2), be provided with support 2 in the valve body 1, valve rod 3 is set on the support 2 and is slidingly matched with support 2, valve body 1 bottom is provided with flange plate 4, and guide rod 5 is installed on the flange plate 4, is provided with buoyancy aid 9 below valve plate 6, buoyancy aid 9 contacts with valve plate 6, buoyancy aid 9 can adopt the spherical structure that also can adopt cylindrical and other enclosed cavities, and buoyancy aid 9 is provided with guiding earhole 8 and is slidingly matched with guide rod 5, and guide rod 5 can be provided with many according to valve body 1 caliber size; Buoyancy aid 9 is provided with the ball valve 10 of into water and draining and is provided with outlet valve 7; can be by in buoyancy aid 9, adding water or buoyancy is regulated in draining; when improving the valve applicability, prolong valve working life; ball valve 10 and outlet valve 7 no specific mounting points; so long as adopt buoyancy aid 9 to regulate the design of buoyancy, all fall into the utility model protection domain by filling, arrange medium.

Working principle:

Buoyancy aid 9 is split type with valve rod 3 in the present embodiment, and the unlatching of valve plate 6 relies on deadweight and impulsive force, then relies on buoyancy aid 9 thrusts when closing.Drive valve: when water level in water pool reduces, buoyancy aid 9 is with drawdown, and valve plate 6 is tried hard to recommend down moving at gravity and upper waters, open downwards, and the upstream MEDIA FLOW is gone into the pond; Close valve: when water level in water pool goes up, buoyancy aid 9 rises with water level, promoting valve plate 6 contacts until sealing with valve body 1, if water level is promptly realized sealing with valve body 1 at lower position buoyancy aid 9, can in buoyancy aid 9, charge into medium by opening outlet valve 7 and ball valve 10 again, thereby offset part buoyancy, make water level reach desired location, close outlet valve 7 and ball valve 10 again.If because the wearing and tearing of sealing with aging, need to increase buoyancy when just salable, then open outlet valve 7 and ball valve 10 in the use afterwards, make that media flow out in the buoyancy aid 9, can discharge the buoyancy that is imbued with, prolong valve working life.

In the utility model buoyancy aid 9 numbers can be single also can be a plurality of, when adopting a plurality of buoyancy aids 9 to be positioned at valve plate 6 belows, as shown in Figure 3, connect by connected element 12 between each buoyancy aid 9, and contact with valve plate 6 by connected element 12, valve body 1 bottom is provided with many guide rods 5 and the guiding earhole 8 that is located on the connected element 12 is slidingly matched; When adopting a plurality of buoyancy aids 9 to be positioned at the top of valve plate 6, as shown in Figure 4, each buoyancy aid 6 is connected with connected element 12 by compliant member 11, this connected element 12 is fixedlyed connected with valve plate 6, compliant member 11 can be a chain, also can adopt other flexible connecting structure or materials such as hinge, rubber bar, and compliant member 11 also is a kind of non-rigid connection, current wash away buoyancy aid and rocking and jam of causing in the time of can playing the elimination valve opening, improve the effect of valve operation stability.The principle of a plurality of buoyancy aid 9 open and close valves is identical with the principle of single buoyancy aid 9 open and close valves.

Claims

1. float valve, comprise the valve plate on valve body, the valve body, valve plate is provided with valve rod, it is characterized in that being provided with in the valve body support, valve stem casing is located on the support and is slidingly matched with support, and guide rod is installed on the valve body, is provided with buoyancy aid below valve plate, buoyancy aid contacts with valve plate, and buoyancy aid is provided with the guiding earhole and guide rod is slidingly matched.

2. float valve as claimed in claim 1 is characterized in that described buoyancy aid is provided with the ball valve of into water and draining and is provided with outlet valve.

3. float valve as claimed in claim 1 or 2, it is characterized in that its buoyancy aid number can be single also can be a plurality of, when adopting a plurality of buoyancy aids to be positioned at the valve plate below, connect by connected element between each buoyancy aid, and contact with valve plate by connected element, perhaps a plurality of buoyancy aids are positioned at the top of valve plate, and each buoyancy aid is connected with connected element by compliant member, and this connected element is fixedlyed connected with valve plate.