CN201963959U - Ball check valve - Google Patents
Ball check valve Download PDFInfo
- Publication number
- CN201963959U CN201963959U CN2010206273584U CN201020627358U CN201963959U CN 201963959 U CN201963959 U CN 201963959U CN 2010206273584 U CN2010206273584 U CN 2010206273584U CN 201020627358 U CN201020627358 U CN 201020627358U CN 201963959 U CN201963959 U CN 201963959U
- Authority
- CN
- China
- Prior art keywords
- spheroid spool
- valve seat
- passage
- valve
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a ball check valve, which comprises a valve body, a ball valve core, valve seats, a controlling component for the ball valve core, spacing devices for the valve seats, wherein the ball valve core is arranged in a through cavity; a passage for communicating a liquid inlet and a liquid outlet is formed on the ball valve core; through rotating the ball valve core, the liquid inlet and the liquid outlet can be disconnected and connected; a stepped hole is formed on an inner wall of the passage of the ball valve core; a stepped surface of the stepped hole, which is crossed with the inner wall of the passage, is obliquely arranged; and a valve clack is arranged in the passage, hinged with the inner wall of the ball valve core at the upper end of the inclined stepped surface, and tightly leaned against the inclined stepped surface under the gravity action of the valve clack, so as to obstruct the passage. The ball check valve provided by the utility model can disconnect the passage, and can avoid the medium reflux when the valve is opened.
Description
Technical field
The utility model relates to a kind of ball valve, specifically, is a kind of ball valve that can prevent that medium from flowing backwards.
Background technique
The faucet body of ball valve is a spheroid, and the axis of spheroid is provided with manhole or passage.The flow direction that ball valve is mainly used to make cut-out, distributes and change medium in pipeline, it only needs to use very little moment of rotation just can close tightly pipeline the operation that spheroid is rotated 90 degree.The ball valve optimum is made switch, cut-off valve uses.Chinese patent literature CN2349411Y has proposed a kind of single piece type internal thread ball valve.This single piece type internal thread ball valve still have tapped valve body, valve seat, spheroid spool, with the valve rod and the handle thereof of spheroid spool interlock, valve rod mounting hole place, valve body middle part is the boss shape, valve rod is installed hole wall and is set up O type circle.Lack the device that prevents that medium from flowing backwards in the ball valve in the prior art, therefore, be not suitable for to prevent the occasion of medium back flow.
The model utility content
For this reason, technical problem to be solved in the utility model is that ball valve of the prior art can not prevent the problem that medium flows backwards, and provides a kind of and can either cut off medium, prevents the ball check valve of medium back flow in the time of can opening again.
For solving the problems of the technologies described above, a kind of ball check valve of the present utility model comprises
Valve body forms cavity on the described valve body, and the two ends of described cavity are respectively liquid entering hole, and liquid outlet;
The spheroid spool, described spheroid spool is arranged in the described cavity, and form the passage that is communicated with described liquid entering hole and described liquid outlet on the described spheroid spool, by rotating described spheroid spool, thereby realize blocking and opening between described liquid entering hole and the described liquid outlet;
Valve seat form the arc inner wall that suitable described spheroid spool rotates on the inwall of described valve seat within it, and the contacting point of described arc inner wall and described spheroid spool forms contact seal; Described valve seat is provided with two, is oppositely arranged in the described cavity, and described spheroid spool is arranged between the two described valve seats;
Spheroid spool control member, described spheroid spool control member is controlled the rotation of described spheroid spool;
Valve seat limit stoper, described valve seat limit stoper are arranged on the end away from described spheroid spool of described valve seat, and described valve seat limit stoper is provided with two; Form step hole on the described vias inner walls of described spheroid spool, the step surface that intersects with described vias inner walls of described step hole is obliquely installed, be provided with a flap in the described passage, described flap is hinged on the described ball valve in-core wall of tilt table terrace upper end, under the action of gravity of described flap, described flap abuts against on the tilt table terrace, and described passage is blocked.
Described ball check valve, one described valve seat limit stoper is the boss that is molded on the described cavity, another described valve seat limit stoper forms the internal thread that is used with described adjustment volution for adjusting volution on the inwall of the respective end of the residing described cavity of described adjustment volution.
Described ball check valve, the end face that contacts with described tilt table terrace of described flap is provided with sealing gasket.
Technique scheme of the present utility model has the following advantages compared to existing technology, 1, in the utility model, be hinged on the setting of the cooperation of flap on the valve interior wall on passage top and tilt table terrace, make ball valve of the present utility model have the function of non-return, when the spheroid spool rotates to the state of medium circulation, because tilt stage is in the face of the effect that props up of flap, make flap only can open towards a direction, promptly only allow flow direction liquid outlet, stop the liquid return liquid entering hole of liquid outlet from liquid entering hole.
Description of drawings
For the easier quilt of content of the present utility model is clearly understood, according to specific embodiment of the utility model also in conjunction with the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is a ball check valve sectional view of the present utility model.
Reference character is expressed as among the figure: 1-valve body, 2-spheroid spool, 3-valve seat, 4-boss, 5-adjust volution, 6-liquid entering hole, 7-tilt table terrace, 8-liquid outlet, 9-passage.
Embodiment
As shown in Figure 1, a kind of ball check valve of present embodiment comprises
Valve body 1 forms cavity on the described valve body 1, and the two ends of described cavity are respectively liquid entering hole 6, and liquid outlet 8;
Valve seat 3 form the arc inner wall that suitable described spheroid spool 2 rotates on the inwall of described valve seat 3 within it, and the contacting point of described arc inner wall and described spheroid spool 2 forms contact seal; Described valve seat 3 is provided with two, is oppositely arranged in the described cavity, and described spheroid spool 2 is arranged between the two described valve seats 3;
Spheroid spool control member, described spheroid spool control member is controlled the rotation of described spheroid spool 2;
Valve seat limit stoper, described valve seat limit stoper are arranged on the end away from described spheroid spool 2 of described valve seat 3, and described valve seat limit stoper is provided with two; Form step hole on described passage 9 inwalls of described spheroid spool 2, the step surface that intersects with described passage 9 inwalls of described step hole is obliquely installed, be provided with a flap in the described passage, described flap is hinged on described spheroid spool 2 inwalls of tilt table terrace 7 upper ends, under the action of gravity of described flap, described flap abuts against on the tilt table terrace 7, and described passage 9 is blocked.Be hinged on the setting of the cooperation of flap on valve body 1 inwall on described passage 9 tops and tilt table terrace 7, make ball valve of the present utility model have the function of non-return, when spheroid spool 2 rotates to the state of medium circulation, because the effect that props up of 7 pairs of flaps of tilt table terrace, make flap only can open towards a direction, promptly only allow flow direction liquid outlet 8, stop the liquid return liquid entering hole 6 of liquid outlet 8 from liquid entering hole 6.One described valve seat limit stoper is the boss 4 that is molded on the described cavity, and another described valve seat limit stoper forms the internal thread that is used with described adjustment volution 5 for adjusting volution 5 on the inwall of the respective end of described adjustment volution 5 residing described cavities.The end face that contacts with described tilt table terrace 7 of described flap is provided with sealing gasket.
Obviously, the foregoing description only is for example clearly is described, and is not the qualification to mode of execution.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all mode of executions.And conspicuous variation of being extended out thus or change still are among the protection domain of the utility model creation.
Claims (3)
1. a ball check valve comprises
Valve body (1), described valve body forms cavity on (1), and the two ends of described cavity are respectively liquid entering hole (6), and liquid outlet (8);
Spheroid spool (2), described spheroid spool (2) is arranged in the described cavity, and form the passage (9) that is communicated with described liquid entering hole (6) and described liquid outlet (8) on the described spheroid spool (2), by rotating described spheroid spool (2), thereby realize blocking and opening between described liquid entering hole (6) and the described liquid outlet (8);
Valve seat (3) form the arc inner wall that suitable described spheroid spool (2) rotates on the inwall of described valve seat (3) within it, and the contacting point of described arc inner wall and described spheroid spool (2) forms contact seal; Described valve seat (3) is provided with two, is oppositely arranged in the described cavity, and described spheroid spool (2) is arranged between the two described valve seats (3);
Spheroid spool control member, described spheroid spool control member is controlled the rotation of described spheroid spool (2);
Valve seat limit stoper, described valve seat limit stoper are arranged on the end away from described spheroid spool (2) of described valve seat (3), and described valve seat limit stoper is provided with two;
It is characterized in that:
Form step hole on described passage (9) inwall of described spheroid spool (2), the step surface that intersects with described passage (9) inwall of described step hole is obliquely installed, be provided with a flap in the described passage, described flap is hinged on described spheroid spool (2) inwall of tilt table terrace (7) upper end, under the action of gravity of described flap, described flap abuts against on the tilt table terrace (7), and described passage (9) is blocked.
2. ball check valve according to claim 1, it is characterized in that: a described valve seat limit stoper is the boss (4) that is molded on the described cavity, another described valve seat limit stoper forms the internal thread that is used with described adjustment volution (5) for adjusting volution (5) on the inwall of the respective end of the residing described cavity of described adjustment volution (5).
3. ball check valve according to claim 1 and 2 is characterized in that: the end face that contacts with described tilt table terrace (7) of described flap is provided with sealing gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206273584U CN201963959U (en) | 2010-11-23 | 2010-11-23 | Ball check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206273584U CN201963959U (en) | 2010-11-23 | 2010-11-23 | Ball check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201963959U true CN201963959U (en) | 2011-09-07 |
Family
ID=44526496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206273584U Expired - Fee Related CN201963959U (en) | 2010-11-23 | 2010-11-23 | Ball check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201963959U (en) |
-
2010
- 2010-11-23 CN CN2010206273584U patent/CN201963959U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110907 Termination date: 20121123 |