CN201228808Y

CN201228808Y - Ball-cock

Info

Publication number: CN201228808Y
Application number: CNU2008200878228U
Authority: CN
Inventors: 卓旦春
Original assignee: ZHEJIANG WOERDA COPPER INDUSTRY Co Ltd
Current assignee: ZHEJIANG WOERDA COPPER INDUSTRY Co Ltd
Priority date: 2008-05-28
Filing date: 2008-05-28
Publication date: 2009-04-29
Anticipated expiration: 2018-05-28

Abstract

The utility model provides a ball float valve, which belongs to the technical field of valves. The ball float valve resolves problems that the existing ball float valve is relatively poor in sealing property, and is complicate in replacing parts. The ball float valve comprises a valve stem, a ball float and a valve body with an water inlet and a water outlet, the valve body is internally provided with a fluid passage which communicates with the water inlet and the water outlet, the valve body is connected with a fixing part, the valve stem is hinged to the fixing part, one end of the valve stem is connected with the ball float, a sealing part is arranged between the valve body and the fixing part, when the valve stem swings, the sealing part can contact with the fluid passage to seal under the action of the valve stem. The ball float valve inwardly pushes a rubber gasket through a piston head to enable the rubber gasket to block the fluid passage, and the piston head is relatively short in stroke and fine in sealing property, thereby increasing the stability of operation. Further, the whole ball float valve is simple and compact in structure and convenient in installation and operation, thereby bringing convenience to replace and repair parts.

Description

A kind of float valve

Technical field

The utility model belongs to valve technology field, relates to a kind of float valve, particularly a kind of float valve that is used on high level water tank, pond and the water tower.

Background technique

At some automatic feed liquor bodies with need generally all to need to use float valve in the facility of fixing liquid level.As the float valve that uses on water tank, water tower and the water closet mainly is to utilize buoyancy of water to control, and when liquid level descended, float valve was opened liquid entering hole automatically, and along with the rising of liquid level, float valve can be closed liquid entering hole again automatically.

As the disclosed a kind of float valve of Chinese patent literature [publication number: CN201031957], comprise the valve body that has water intake and water outlet, be used to drive the lever that opens not busy parts work in the described valve body, and the ball float that is fixed in described lever one end, in described valve body, be provided with the fixedly barricade that has through hole, keying parts in the described valve body are a valve plates, and the top of described valve plates is fixedly connected on described valve plates by the other end that is parallel to described water outlet cross section and is horizontally disposed with described lever.This valve mainly is to push the opening and closing that valve plates realizes valve open by lever, but because float valve uses frequently, float valve uses a period of time late gate plate just can not block fixedly barricade, sealing is relatively poor, and part is mounted in valve inner in case damage also is inconvenient to keep in repair.Existing other technological scheme also exists similar problem.

Summary of the invention

The purpose of this utility model is at existing existing the problems referred to above, and a kind of simple in structure, effectively throttle down, installation and operation are convenient, sealing reliability is high float valve is provided.

The purpose of this utility model can realize by following technical proposal: a kind of float valve, comprise valve rod, ball float and have water intake and the valve body of water outlet, has the fluid passage that water intake and water outlet are connected in the described valve body, be connected with fixed block on the described valve body, valve rod is hinged on the fixed block and valve rod one end is connected with ball float, it is characterized in that, between valve body and fixed block, be provided with Sealing, when valve rod is swung, can contact and form sealing with the fluid passage under the above-mentioned effect of Sealing at valve rod.

This float valve is arranged on water tower or the water tank.At first the water intake of valve body is connected with pipeline during use.Wherein have the fluid passage that water intake and water outlet are connected in the valve body, water just can flow out from water outlet by the fluid passage from the water intake back of coming in again like this.Fixed block is the connection that makes things convenient for valve rod, and valve rod is hinged on the fixed block, and valve rod just can be swung on fixed block like this.When water level was in certain altitude, buoyancy held up ball float, thereby drove upwards swing of valve rod, and the just inside always roof pressure Sealing of an end of valve rod makes Sealing contact and form sealing with the fluid passage.Drawdown after the water in water tower, water tank or the water reservoir is discharged from, at this moment thereby ball float falls to driving valve rod to lower swing, an end of valve rod just breaks away from Sealing like this, that is to say and Sealing between do not have active force, at this moment the flowing water passage in the valve body is reopened, and water just enters in the liquid storage tank.

In above-mentioned float valve, described Sealing comprises rubber sheet gasket and piston head, and described piston head is arranged between rubber sheet gasket and the fixed block, and an end of piston head contacts with rubber sheet gasket, and the other end contacts with valve rod.Here be to act on by valve rod to make piston head roof pressure rubber sheet gasket make it seal up the fluid passage on the piston head,, guaranteed the sealability of float valve like this because rubber sheet gasket has certain elasticity.

In above-mentioned float valve, offer prong on the described fixed block, described valve rod one end is stuck in the prong and can swings in prong.Be that valve rod swings up and down for convenience like this.

In above-mentioned float valve, have groove on the described fixed block, above-mentioned piston head is installed in this groove and portion's slip within it.Make things convenient for piston head inside roof pressure rubber sheet gasket under the effect of valve rod like this.

In above-mentioned float valve, the contacted end in described rubber sheet gasket and fluid passage is coniform.Make rubber pad when float valve is in closed condition, keep high-seal like this, preventing to produce and leak.

In above-mentioned float valve, described valve body is provided with valve gap, and above-mentioned fixed block is connected on the valve body by valve gap.When the part of inside needs repairing, only need to screw out valve gap, replacing is reinstalled and is got final product.

In above-mentioned float valve, the water outlet place of described valve body is connected with flexible pipe.

Compared with prior art, the advantage of this float valve is to make it stop up the fluid passage by the inside roof pressure rubber sheet gasket of piston head, and the stroke of piston head is shorter, has improved the stability of work, good seal performance.Whole in addition floating ball valve structure is simple and compact, installation and operation is convenient, conveniently carries out the replacing and the maintenance of part.

Description of drawings

Fig. 1 is the perspective view of this float valve.

Fig. 2 is the sectional structure schematic representation of this float valve.

Among the figure, valve body 1, water intake 1a, water outlet 1b, valve rod 2, ball float 3, fluid passage 4, flexible pipe 5, fixed block 6, prong 6a, groove 6b, valve gap 7, Sealing 8, rubber sheet gasket 8a, piston head 8b.

Embodiment

Below be specific embodiment of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.

As depicted in figs. 1 and 2, this float valve comprises valve rod 2, ball float 3 and has water intake 1a and the valve body 1 of water outlet 1b, has the fluid passage 4 that water intake 1a and water outlet 1b are connected in valve body 1, and the water outlet 1b place of valve body 1 is connected with flexible pipe 5.During use water intake 1a is connected with the inlet pipeline of water tower or water tank, flexible pipe 5 is positioned at water tower or water tank liquid storage tank.

Be connected with fixed block 6 on the described valve body 1, valve body 1 is provided with valve gap 7, and above-mentioned fixed block 6 is connected on the valve body 1 by valve gap 7.Described valve rod 2 is the L type, and valve rod 2 is hinged on the fixed block 6 and valve rod 2 one ends are connected with ball float 3, offers prong 6a on the fixed block 6, and described valve rod 2 the other ends are stuck in the prong 6a and can swing in prong 6a.

Between valve body 1 and fixed block 6, be provided with Sealing 8, sealing part 8 comprises rubber sheet gasket 8a and piston head 8b, described piston head 8b is arranged between rubber sheet gasket 8a and the fixed block 6, and the end of piston head 8b contacts with rubber sheet gasket 8a, and the other end contacts with valve rod 2.Have groove 6b on the fixed block 6, above-mentioned piston head 8b is installed in this groove 6b and portion's slip within it.

Above-mentioned Sealing 8 can contact and form sealing with fluid passage 4 under the effect of valve rod 2 when valve rod 2 swing, mainly is here to act on by valve rod 2 to make piston head 8b roof pressure rubber sheet gasket 8a make it seal up fluid passage 4 on the piston head 8b to realize closing of float valve.Certainly for rubber pad keeps high-seal when float valve is in closed condition, described rubber sheet gasket 8a and 4 contacted ends, fluid passage are to be coniform.

During the work of this float valve, drawdown after the water in water tower or the water tank is discharged from, at this moment thereby ball float 3 falls to driving valve rod 2 to lower swing, at this moment water just enters into fluid passage 4 from water intake 1a, effect lower piston head 8b at hydraulic pressure outwards moves, at this moment rubber sheet gasket 8a just separates with fluid passage 4, and current just enter into liquid storage tank behind water outlet 1b.When water level is in certain altitude, buoyancy is upwards swung ball float 3 picking-ups thereby drive valve rod 2, thereby the just inside always roof pressure piston head 8b of an end of valve rod 2 makes rubber sheet gasket 8a contact and form sealing with fluid passage 4, fluid passage 4 is closed, played water level control.

Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.

Although this paper has used terms such as valve body 1, water intake 1a, water outlet 1b, valve rod 2, ball float 3, fluid passage 4, flexible pipe 5, fixed block 6, prong 6a, groove 6b, valve gap 7, Sealing 8, rubber sheet gasket 8a, piston head 8b morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.

Claims

1, a kind of float valve, comprise valve rod (2), ball float (3) and have water intake (1a) and the valve body (1) of water outlet (1b), has the fluid passage (4) that water intake (1a) and water outlet (1b) are connected in the described valve body (1), be connected with fixed block (6) on the described valve body (1), valve rod (2) is hinged on the fixed block (6) and valve rod (2) one end is connected with ball float (3), it is characterized in that, be provided with Sealing (8) between valve body (1) and fixed block (6), Sealing (8) above-mentioned when valve rod (2) is swung can contact and form sealing with fluid passage (4) under the effect of valve rod (2).

2, float valve according to claim 1, it is characterized in that, described Sealing (8) comprises rubber sheet gasket (8a) and piston head (8b), described piston head (8b) is arranged between rubber sheet gasket (8a) and the fixed block (6), and an end of piston head (8b) contacts with rubber sheet gasket (8a), and the other end contacts with valve rod (2).

3, float valve according to claim 1 and 2 is characterized in that, offers prong (6a) on the described fixed block (6), and described valve rod (2) one ends are stuck in the prong (6a) and can swing in prong (6a).

4, float valve according to claim 1 and 2 is characterized in that, has groove (6b) on the described fixed block (6), and above-mentioned piston head (8b) is installed in this groove (6b) and portion's slip within it.

5, float valve according to claim 2 is characterized in that, described rubber sheet gasket (8a) is coniform with contacted end, fluid passage (4).

6, float valve according to claim 1 is characterized in that, described valve body (1) is provided with valve gap (7), and above-mentioned fixed block (6) is connected on the valve body (1) by valve gap (7).

7, float valve according to claim 1 is characterized in that, the water outlet (1b) of described valve body (1) locates to be connected with flexible pipe (5).