CN203549013U

CN203549013U - Backflow-preventing one-way valve

Info

Publication number: CN203549013U
Application number: CN201320759743.8U
Authority: CN
Inventors: 周新明; 李春玲; 唐铖; 何斌; 范荣; 杜振东; 范红梅
Original assignee: Suzhou University
Current assignee: Suzhou University
Priority date: 2013-11-26
Filing date: 2013-11-26
Publication date: 2014-04-16
Anticipated expiration: 2023-11-26

Abstract

The utility model discloses a backflow-preventing one-way valve. The backflow-preventing one-way valve comprises a valve body provided with a vertical fluid through hole in the inside, a floating ball is arranged in the fluid through hole, floating ball limiting seats in sealing connection with the valve body and limiting that the floating ball is moved out of the fluid through hole are respectively arranged at the hole positions at the upper and lower ends of the fluid through hole, and fluid inlet-outlet holes communicated with the fluid through hole are formed in the floating ball limiting seats. The backflow-preventing one-way valve is simple in structure and long in service life.

Description

Reverse-filling one-way valve

Technical field

The utility model relates to a kind of reverse-filling one-way valve.

Background technique

One-way valve is widely used in various occasions with its exclusive characteristic.Traditional one-way valve generally comprises the valve body that inside is provided with fluid through-hole, in fluid through-hole in valve body, arrange a spool, valve body two ends are respectively provided with the position limit socket that a restriction spool shifts out, on position limit socket, be shaped with the liquid in-out through hole being communicated with fluid through-hole, in valve body, be also provided with the spring being connected with spool.Under general state, spool is positioned at and is against the fluid passing hole aperture place of one of them position limit socket and fluid through-hole is blocked under spring action; When fluid is from valve body during forward flow, hydrodynamic pressure can make spool to mobile on one side, and spring contraction shortens, and fluid through-hole is opened, liquid positive flow mistake; And when fluid is from valve body during reverse flow, hydrodynamic pressure makes spool block firmly the aperture of liquid in-out through hole, thereby liquid cannot be flow through.

Model utility content

The utility model object is: a kind of simple in structure, long service life is provided, has the one-way valve of reverse-filling function.

The technical solution of the utility model is: described one-way valve, comprise the valve body that is provided with vertical fluid through-hole in it, in described fluid through-hole, be furnished with a ball float, the aperture place at the upper and lower two ends of described fluid through-hole be respectively furnished with one that be connected with valve seal, limit described ball float and shift out the ball float position limit socket outside fluid through-hole, and be all shaped with the fluid passing hole being communicated with described fluid through-hole in each ball float position limit socket.

As preferably, described ball float position limit socket partly stretches out outside described fluid through-hole, and the part that ball float position limit socket stretches out outside fluid through-hole is shaped with outside thread.

As preferably, described ball float position limit socket is connected with valve body screw thread.

As preferably, the aperture of described liquid in-out through hole inner side is conical horn mouth.

The utility model has the advantages that:

1, this one-way valve of the utility model adopts gravity and law of buoyancy, can allow liquid from top to bottom flow, and can not allow liquid from bottom to top flow, it is simple in structure, easy to use, due to the perishable parts such as spring not being set, greatly extended again the working life of this one-way valve.

2, this one-way valve can be used for preventing the anti-filling of indoor floor drain.Turning over 90 degree from second floor to substantially horizontal, the general total sewage pipe of multi-storey building directly connects underground sewage tube, but turning Chang Yi blocks, or flowing water is not smooth, can make like this common sewer horizontal plane raise, once horizontal plane surpasses second floor flooring, sewage is just inevitable to be overflowed from low level pipeline mouths such as second floor floor drains.If second floor be in charge of with common sewer in the middle of, perpendicular to substantially horizontal, seal in this one-way valve, so can guarantee under normal circumstances, be in charge of sewage and flow into smoothly common sewer.Once house steward is smooth or obstruction, house steward's sewage can oppositely not flow into and be in charge of.

3, this one-way valve can be used for preventing that under the low-lying land mouth of pipe of city, water falls to overflow.Because the drainage system in city is interconnection, be equivalent to a connecting vessels, when raining heavily, water tends to flow to low-lying place, causes water logging, so load onto this device in the pipeline in the obvious location of drop, can prevent from being flow to low-lying land by high-order water, alleviate the condition of asking of low-lying land water logging.

4, this one-way valve can be used for the reverse-filling of flood control system.Between sewerage system and moat or lake, load onto this one-way valve, under normal circumstances, urban inner drainage system is generally all high than moat or lake level, can guarantee that the water of sewerage system is discharged peripheral.When flood season, this one-way valve can prevent that the water in moat or lake from pouring in down a chimney to urban inner.

In a word, the utility model this one-way valve application buoyancy and gravity principle are connected on pipe-line system, can guarantee that the direction that fluid is set according to us flows, and controls the flow direction of fluid simply and effectively.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is further described:

The structural representation that Fig. 1 is this one-way valve of the utility model when stoping that fluid is reverse to be reserved;

Fig. 2 is the structural representation of this one-way valve of the utility model when fluid forward reserves;

Fig. 3 is the structural representation of this one-way valve of the utility model when forward pouring in down a chimney without fluid, reverse nothing;

Wherein: 1-valve body, 2-fluid through-hole, 3-ball float, 4-ball float position limit socket, 5-fluid passing hole, 6-the first water pipe, 7-the second water pipe, 8-plash.

Embodiment

Fig. 1, Fig. 2 and Fig. 3 have shown a specific embodiment of this one-way valve of the utility model, and it comprises valve body 1, in this valve body 1, are provided with vertical fluid through-hole 2, and during use, liquid fluid (water) flows through from top to bottom from fluid through-hole.In fluid through-hole 2, be furnished with a ball float 3, so-called " ball float ", refers to that its density is less than the density of liquid in fluid through-hole 2, and at this, for water, the density of ball float is less than 1, thereby ball float 3 can be floated in this liquid.

The aperture place at described fluid through-hole two ends Shang Xia 2 be respectively furnished with one that be tightly connected with valve body 1, for limiting described ball float 3, shift out the ball float position limit socket 4(what is called " being tightly connected " outside fluid through-hole 2, refer to that ball float position limit socket seals no leakage with the cooperation place that is connected of valve body), and the interior liquid in-out through hole 5 being communicated with described fluid through-hole 2 that is all shaped with of each ball float position limit socket 4.In order to facilitate the installation and removal of ball float position limit socket 4, in this example, ball float position limit socket 4 is threaded with valve body 1, and certainly, the two also can adopt other Placement.

In this example, a part for ball float position limit socket 4 is positioned at the inside of fluid through-hole 2, and another part stretches out the outside of fluid through-hole 2, and ball float position limit socket 4 stretch out that part outside fluid through-hole 2 be shaped with outside thread or with pipeline close-fitting, so that this one-way valve is connected with extraneous pipeline, as Fig. 2.

Now in conjunction with Fig. 1～Fig. 3, the working principle of this one-way valve of the present embodiment is as follows:

In Fig. 1～Fig. 3, this plash of plash 8(is generally common sewer, urban sewage house steward, moat etc.) be communicated with by the first water pipe 6 with the bottom of one-way valve, the top of one-way valve is connected with leads to the second extraneous water pipe 7(as indoor floor drain, road of city sewer pipe mouth, flood control pipe-line system etc. in city).Conventionally under state, while normally using, ball float 3 drops on bottom ball float position limit socket 4 under self gravitation effect, as Fig. 3, when fluid is when from top to bottom (in figure A to) flows into, fluid produces buoyancy to ball float 3, ball float 3 is held up, and fluid forward flows out this one-way valve under Action of Gravity Field, as Fig. 2.When the liquid level of catch basin 8 is during higher than one-way valve, fluid is from B to (from bottom to top) reverse inflow one-way valve, the buoyancy of fluid holds up ball float 3, until ball float 3 arrives top ball float position limit socket 4 under floating function, now ball float 3 is tightly fitted with the ball float position limit socket 4 on top, and block the fluid passing hole 5 of top ball float position limit socket, and make the fluid cannot be reverse by this one-way valve, as Fig. 1.

In order to guarantee that ball float 3 can seal well, block fluid passing hole 5, also for fear of ball float 3, by the aperture of liquid in-out through hole 5 inner sides, scratched, this example is special is arranged to conical horn mouth by the aperture of fluid passing hole 5 inner sides, as Fig. 1 simultaneously.

Certainly, above-described embodiment is only explanation technical conceive of the present utility model and feature, and its object is to allow people can understand content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalent transformations of doing according to the Spirit Essence of the utility model main technical schemes or modification, within all should being encompassed in protection domain of the present utility model.

Claims

1. a reverse-filling one-way valve, comprise the valve body (1) that is provided with vertical fluid through-hole (2) in it, it is characterized in that: in described fluid through-hole (2), be furnished with a ball float (3), the place, aperture at the upper and lower two ends of described fluid through-hole (2) be respectively furnished with one that be tightly connected with valve body (1), limit described ball float (3) and shift out fluid through-hole (2) ball float position limit socket (4) outward, and in each ball float position limit socket (4), be all shaped with the fluid passing hole (5) being communicated with described fluid through-hole (2).

2. reverse-filling one-way valve according to claim 1, is characterized in that: described ball float position limit socket (4) part is stretched out outside described fluid through-hole (2), and the part that ball float position limit socket (4) stretches out outside fluid through-hole (2) is shaped with outside thread.

3. reverse-filling one-way valve according to claim 1 and 2, is characterized in that: described ball float position limit socket (4) is threaded with valve body (1).

4. reverse-filling one-way valve according to claim 1 and 2, is characterized in that: the aperture of described fluid passing hole (5) inner side is conical horn mouth.