CN2070846U - Piston sluice valve - Google Patents
Piston sluice valve Download PDFInfo
- Publication number
- CN2070846U CN2070846U CN 90214730 CN90214730U CN2070846U CN 2070846 U CN2070846 U CN 2070846U CN 90214730 CN90214730 CN 90214730 CN 90214730 U CN90214730 U CN 90214730U CN 2070846 U CN2070846 U CN 2070846U
- Authority
- CN
- China
- Prior art keywords
- valve
- spool
- passage
- fluoran stream
- valve core
- 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.)
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Abstract
The utility model relates to a piston sluice valve, which comprises a valve seat, a valve cover, a valve core, a valve stem and a controlled mechanism of the valve stem. The utility model is characterized in that the flow receiving surface of the valve core is a curved face. The sluice valve of the utility model has the advantages of small fluid resistance, small valve core corrosion, good seal performance, low cost and long service life.
Description
The utility model relates to a kind of valve, especially a kind of gate valve.
Existing gate valve generally is made of valve seat, valve gap, spool, valve rod and valve rod operating mechanism, and spool is connected with valve rod.In valve seat, be provided with the passage of fluid turnover and the passage of valve core movement, the valve core movement passage joins mutually with the fluid passage, handle stem movement by the valve rod operating mechanism, and then the drive spool moves the sealing and the unlatching of realization convection cell passage in the valve core movement passage.In addition, be provided with Sealing, occur leaking when the sealing preventing in its closed position of spool convection cell passage.Because existing gate valve adopts the straight line type passage usually, therefore when it was in full-gear, bending did not appear in runner, and the flow resistance of fluid is little.Simultaneously, through-type runner also is convenient to clear up pipeline, can not influence passing through of spherical pig, wiper because of the setting of valve body.So existing gate valve has certain advantage.But, because the spool of existing gate valve normally cross section is the flashboard of rectangle, its fluoran stream surface is the plane, in the Open valve process or valve when maintaining semi-open state, rapid variation will take place in the flow direction of flowing medium of spool of flowing through, the suffered resistance of fluid is bigger, and serious to the erosion of spool.Therefore, existing gate valve exists certain defective.
The purpose of this utility model provides the gate valve that a kind of convection cell resistance is little, spool is difficult for erosion, good seal performance.
Gate valve of the present utility model improves on the basis of existing gate valve.In the utility model, except that valve seat, valve gap, valve rod and the valve rod operating mechanism of still continuing to use existing gate valve, will have plate spool especially now and change the spool that fluoran stream surface is a curved surface into.The spool fluoran stream surface is changed into after the curved surface, and the fluidised form in the time of can improving flowing medium by spool effectively reduces the resistance of spool convection cell.Simultaneously, this improvement can be lowered the erosion of flowing medium to spool, avoids causing because of the spool erosive wear leakage of valve, reduces the spoilage of valve member.In the utility model, the spool fluoran stream surface can adopt that circular arc, ellipse arc or other not only be convenient to process, but also the curved surface form that helps reducing resistance, reduce the spool erosion.Angle from further improving fluidised form and being convenient to process can also be set to curved surface with the lee side of spool.Usually can make cylindrical the profile of spool or elliptical cylinder-shape, promptly make piston-shaped.Adopt cylindrical or elliptical cylinder-shape spool, especially the cylindrical spool processing and fabricating is easy, and maintain and replace is for just, thereby can reduce manufacture cost and cost of use.In the utility model, leak in order to prevent that the junction of spool and fluid passage produces when the valve closing, be embedded in the side seal of spool sidewall except being provided with, also be provided with the communication passage of passing valve core inside at the back of spool fluoran stream surface and above-mentioned side seal especially at this place.Like this, when valve was in closed condition, the hydrodynamic pressure before the valve put on the back of side seal by this communication passage, makes side seal be close to the sidewall of fluid passage, thereby strengthens sealing effect.When actual fabrication spool of the present utility model, the linear path that is communicated with spool fluoran stream surface and side seal back both can directly be set, also can earlier spool be made into spool on an empty stomach, be provided with respectively at the back of spool fluoran stream surface and side seal again and lead to spool through hole on an empty stomach, thereby constitute the communication passage of winding form.In addition, for fear of causing spool to be not closed completely because of fluid applies upward pressure to the spool bottom.Valve rod and valve rod operating mechanism carry excessive and phenomenons wearing and tearing, prolong the working life of valve, in the utility model, also are provided with the communication passage of passing valve core inside especially between spool fluoran stream surface and spool top.The setting of this communication passage can make flowing medium enter between spool top and the valve gap by passage, and the spool top is applied a downward pressure, and this pressure can be offset by the aforementioned upward pressure that spool is suffered, thereby improves the stress of spool.And the communication passage between spool fluoran stream surface and the side seal back is similar, and the communication passage between spool fluoran stream surface and the spool top both can be form of straight lines, also can be winding form.
Gate valve of the present utility model is compared with existing gate valve, has that the convection cell resistance is little, the spool erosion is little, characteristics of good seal performance, low cost of manufacture and long service life.
Content of the present utility model illustrates further in conjunction with the embodiments.
Fig. 1 is the structural representation of gate valve among the embodiment.
Fig. 2 is the A-A sectional view.
Shown in Fig. 1-2, the gate valve of present embodiment is made of valve seat 1, valve gap 2, spool 3, valve rod 4, hand-wheel-type valve rod operating mechanism 5, lip ring 6, side seal 13, support 7 and closure plate 8.Spool 3 is connected with valve rod 4.In valve seat 1, be provided with straight line type fluid access way 9 and valve core movement path 10.In the present embodiment, spool is the empty stomach spool, and its profile is the cylindrical body of piston-like.Be respectively arranged with the through hole 12,14 and 15 that leads to the spool empty stomach at spool fluoran stream surface 11, side seal 13 and spool top.Through hole 12, spool empty stomach and through hole 14 have constituted the passage that is communicated with spool fluoran stream surface and side seal back.Through hole 12, spool empty stomach and 15 of through holes have constituted the passage that is communicated with spool fluoran stream surface and spool top.When using the gate valve of present embodiment, by rotation hand wheel 5 valve rod 4 is moved up and down, and then drive spool 3 move up and down the keying of realization convection cell access way 9.
Claims (5)
1, Piston sluice valve, constitute by valve seat (1), valve gap (2), spool (3), valve rod (4) and valve rod operating mechanism (5), spool (3) is connected with valve rod (4), in valve seat (1), be provided with fluid into and out of straight line type passage (9) and valve core movement passage (10), valve core movement passage (10) joins mutually with fluid passage (9), spool (3) matches with valve core movement passage (10), and the fluoran stream surface (11) that it is characterized in that spool (3) is a curved surface.
2, gate valve as claimed in claim 1, the fluoran stream surface (11) that it is characterized in that spool (3) is the circular arc type curved surface.
3, gate valve as claimed in claim 2, the profile that it is characterized in that spool (3) is a cylindrical body.
4, as claim 1,2,3.Described gate valve is characterized in that at spool fluoran stream surface (11) and is embedded between the back of side seal (13) of spool sidewall being provided with the communication passage of passing valve core inside.
5, as claim 1,2,3.Described gate valve is characterized in that being provided with the communication passage of passing valve core inside between spool fluoran stream surface (11) and spool top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90214730 CN2070846U (en) | 1990-07-04 | 1990-07-04 | Piston sluice valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90214730 CN2070846U (en) | 1990-07-04 | 1990-07-04 | Piston sluice valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2070846U true CN2070846U (en) | 1991-02-06 |
Family
ID=4894083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90214730 Withdrawn CN2070846U (en) | 1990-07-04 | 1990-07-04 | Piston sluice valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2070846U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113187916A (en) * | 2021-05-27 | 2021-07-30 | 深圳市伙伴气动精密机械有限公司 | Pneumatic throttle valve and application method thereof |
-
1990
- 1990-07-04 CN CN 90214730 patent/CN2070846U/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113187916A (en) * | 2021-05-27 | 2021-07-30 | 深圳市伙伴气动精密机械有限公司 | Pneumatic throttle valve and application method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |