CN203516816U - Low-torque and large-caliber ball valve - Google Patents
Low-torque and large-caliber ball valve Download PDFInfo
- Publication number
- CN203516816U CN203516816U CN201320589392.0U CN201320589392U CN203516816U CN 203516816 U CN203516816 U CN 203516816U CN 201320589392 U CN201320589392 U CN 201320589392U CN 203516816 U CN203516816 U CN 203516816U
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- valve
- valve body
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- ball core
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Abstract
The utility model relates to ball valves and discloses a low-torque and large-caliber ball valve. The low-torque and large-caliber ball valve comprises a valve body, a ball core of an inner cavity of the valve body, a valve seat at the joining position between the ball core and the valve body, and a valve rod installed in the valve body and connected with the ball core, wherein the valve body comprises a main valve body and auxiliary valve bodies arranged on the two sides of an inlet-outlet of the main valve body; a groove is formed above the ball core; one end of the valve rod is inserted into the groove; the other end of the valve rod extends out of the main valve body; the valve rod is provided with an upper oilless bearing; a bottom shaft is arranged below the ball core and provided with a lower oilless bearing; the valve seat is pre-tightened through a valve seat spring and sealed through a sealing ring, and the sealing performance between the valve seat and the ball core is enhanced; padding is arranged above the upper oilless bearing and located between the valve rod and the main valve body to prevent media from being leaked; a pressing plate is arranged above the padding. According to the low-torque and large-caliber ball valve, the opening and closing torque of the large-caliber ball valve is effectively reduced, the opening and closing speed and the closing performance of the valve are improved, and the service life of the low-torque and large-caliber ball valve is prolonged greatly.
Description
Technical field
The utility model relates to ball valve, especially a kind of low moment of torsion big-diameter ball valve.
Background technique
Ball valve is widely used with its unique structural feature, it is constituent element important in valve, big-diameter ball valve ubiquity in the market that switch is hard, moment of torsion is larger, affect switching speed and the problem of closing leakproofness, have a strong impact on the working life of valve, cannot meet growing automatic demand for control.For above deficiency, a kind of open and close torque, raising switching speed and valve closing performance that reduces big-diameter ball valve of necessary design, the low moment of torsion big-diameter ball valve that greatly extends the working life of valve.
Summary of the invention
The shortcoming that the utility model is used for prior art Large diameter ball valve, has designed a kind of low moment of torsion big-diameter ball valve.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:
Low moment of torsion big-diameter ball valve, the valve seat of junction point and be installed on the valve rod being connected with ball core in valve body between the ball core, ball core that comprises valve body, body cavity and valve body, valve body comprises main valve body and is located at the auxiliary valve body that main valve body is imported and exported both sides, ball core top is provided with one end of groove valve rod and inserts in groove, the other end stretches out main valve body, valve rod is provided with oilless bearing, and ball core below is provided with lower shaft, and lower shaft is provided with lower oilless bearing.
As preferably, above ball core, be provided with in one end insertion groove of groove valve rod, the other end stretches out main valve body, and valve rod is provided with oilless bearing, and ball core below is provided with lower shaft, and lower shaft is provided with lower oilless bearing.Insert in the groove of ball core top valve rod one end, the valve rod the other end stretches out valve body and is fixedly connected on actuator shaft by connecting sleeve, and along with the complete opening and closing that 90 ° of angles rotatablely move to change runner between ball core and valve seat are made by actuator, ball core is fixed by valve rod and lower shaft, while closing, under the pressure-acting that medium produces, ball core can not produce displacement, and on valve rod and lower shaft, be respectively equipped with oilless bearing and lower oilless bearing or rolling bearing, the frictional force of axle journal while opening and closing to reduce, switching torque is little, improve switching speed and valve closing performance.
As preferably, in valve seat, be provided with seating spring and seal ring.Valve seat adopts metal to be combined with plastic materials, and carries out pretension by seating spring, and seal ring seals, and guarantees that valve seat is close to ball core, enhancing sealing.
As preferably, main valve body is connected and fixed by stud and nut with the auxiliary valve body of importing and exporting both sides, is provided with the first pad between stud and nut.Guarantee valve body soundness and sealing.
As preferably, above upper oilless bearing, between valve rod and main valve body, be provided with filler, filler below is provided with Packing seat.Filler has good sealing and compared with friction coefficient, prevents medium leakage, and filler below is provided with Packing seat and plays the effect of supporting filler.
As preferably, filler is V-type polytetrafluoroethylene packing, and Packing seat is polytetrafluoroethylene packing pad.Teflon has minimum friction factor and excellent self lubricity, is a kind of good sealing material, prevents that modulating valve from leaking outside.
As preferably, above filler, be provided with pressing plate.Pressing plate compresses filler, guarantees its sealing, and filler hold-down mechanism extends filler working life.
As preferably, below main valve body, be provided with bolt fixedly lower shaft and main valve body, be inside provided with the second pad.Improve sealing.
According to the technical solution of the utility model, low moment of torsion big-diameter ball valve, comprise valve body, the ball core of body cavity, the valve seat of junction point and be installed on the valve rod being connected with ball core in valve body between ball core and valve body, valve body comprises main valve body and is located at the auxiliary valve body that main valve body is imported and exported both sides, ball core top is provided with one end of groove valve rod and inserts in groove, the other end stretches out main valve body, valve rod is provided with oilless bearing, ball core below is provided with lower shaft, lower shaft is provided with lower oilless bearing, valve seat adopts metal to be combined with plastic materials, and carry out pretension by seating spring, seal ring seals, strengthen the sealing between valve seat and ball core, upper oilless bearing top, between valve rod and main valve body, be provided with filler, there is good sealing and compared with friction coefficient, prevent medium leakage.The utility model can effectively reduce the open and close torque of big-diameter ball valve, improves switching speed and valve closing performance, extends greatly the working life of valve.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is valve seat construction schematic diagram in Fig. 1.
The toponym that in accompanying drawing, each number designation refers to is as follows: oilless bearing, 10-ball core, 11-valve seat, 12-seating spring, 13-seal ring, 14-valve rod, the upper oilless bearing of 15-, 16-Packing seat, 17-filler, 18-pressing plate, 101-groove under 1-bolt, 2-the second pad, 3-lower shaft, 4-stud, 5-nut, 6-the first pad, 7-main valve body, 8-auxiliary valve body, 9-.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail:
Low moment of torsion big-diameter ball valve, as shown in Fig. 1～2, comprise valve body, the ball core 10 of body cavity, the valve seat 11 of junction point and be installed on the valve rod 14 being connected with ball core 10 in valve body between ball core 10 and valve body, valve body comprises main valve body 7 and is located at the auxiliary valve body 8 that main valve body 7 is imported and exported both sides, ball core 10 tops are provided with groove 101, insert in groove 101 one end of valve rod 14, the other end stretches out main valve body 7, valve rod 14 is provided with oilless bearing 15, ball core 10 belows are provided with lower shaft 3, lower shaft 3 is provided with lower oilless bearing 9, in valve seat 11, be provided with seating spring 12 and seal ring 13, main valve body 7 is connected and fixed by stud 4 and nut 5 with the auxiliary valve body 8 of both sides, 5, stud 4 and nut are provided with the first pad 6.Upper oilless bearing 13 tops, are provided with filler 17 between valve rod 14 and main valve body 7, and filler 17 belows are provided with Packing seat 16, and filler 17 tops are provided with pressing plate 18.Main valve body 7 belows are provided with bolt 1, and fixedly lower shaft 3 and main valve body 7, be inside provided with the second pad 2.
In a word, the foregoing is only preferred embodiment of the present utility model, all equalizations of doing according to the utility model claim change and modify, and all should belong to the covering scope of the utility model patent.
Claims (7)
1. low moment of torsion big-diameter ball valve, comprise valve body, the ball core (10) of body cavity, the valve seat (11) of junction point and be installed on the valve rod (14) being connected with ball core (10) in valve body and it is characterized in that between ball core (10) and valve body: valve body comprises main valve body (7) and is located at the auxiliary valve body (8) of main valve body (7) import and export both sides, ball core (10) top is provided with groove (101), insert in groove (101) one end of valve rod (14), the other end stretches out main valve body (7), valve rod (14) is provided with oilless bearing (15), ball core (10) below is provided with lower shaft (3), lower shaft (3) is provided with lower oilless bearing (9).
2. low moment of torsion big-diameter ball valve according to claim 1, is characterized in that: in valve seat (11), be provided with seating spring (12) and seal ring (13).
3. low moment of torsion big-diameter ball valve according to claim 1, it is characterized in that: main valve body (7) is connected and fixed by stud (4) and nut (5) with the auxiliary valve body (8) of both sides, between stud (4) and nut (5), is provided with the first pad (6).
4. low moment of torsion big-diameter ball valve according to claim 1, is characterized in that: upper oilless bearing (15) top, between valve rod (14) and main valve body (7), be provided with filler (17), and below filler (17), be provided with Packing seat (16).
5. low moment of torsion big-diameter ball valve according to claim 4, is characterized in that: filler (17) is V-type polytetrafluoroethylene packing, and Packing seat (16) is polytetrafluoroethylene packing pad.
6. low moment of torsion big-diameter ball valve according to claim 4, is characterized in that: filler (17) top is provided with pressing plate (18).
7. low moment of torsion big-diameter ball valve according to claim 1, is characterized in that: main valve body (7) below is provided with bolt (1), and bolt (1) is lower shaft (3) and main valve body (7) fixedly, is provided with the second pad (2) in bolt (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320589392.0U CN203516816U (en) | 2013-09-23 | 2013-09-23 | Low-torque and large-caliber ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320589392.0U CN203516816U (en) | 2013-09-23 | 2013-09-23 | Low-torque and large-caliber ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203516816U true CN203516816U (en) | 2014-04-02 |
Family
ID=50375748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320589392.0U Expired - Fee Related CN203516816U (en) | 2013-09-23 | 2013-09-23 | Low-torque and large-caliber ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203516816U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105402436A (en) * | 2015-12-31 | 2016-03-16 | 上海高中压阀门股份有限公司 | Large-diameter bolted connection ball valve |
| CN105422976A (en) * | 2015-12-21 | 2016-03-23 | 中国海洋石油总公司 | Blowing-in preventing structure of valve rod of underwater ball valve |
| CN106641321A (en) * | 2017-02-23 | 2017-05-10 | 江苏明江阀业有限公司 | Ball valve with oilless bearing |
| CN108278382A (en) * | 2018-04-10 | 2018-07-13 | 博莱阀门（常州）有限公司 | A kind of floating ball valve |
-
2013
- 2013-09-23 CN CN201320589392.0U patent/CN203516816U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422976A (en) * | 2015-12-21 | 2016-03-23 | 中国海洋石油总公司 | Blowing-in preventing structure of valve rod of underwater ball valve |
| CN105402436A (en) * | 2015-12-31 | 2016-03-16 | 上海高中压阀门股份有限公司 | Large-diameter bolted connection ball valve |
| CN106641321A (en) * | 2017-02-23 | 2017-05-10 | 江苏明江阀业有限公司 | Ball valve with oilless bearing |
| CN108278382A (en) * | 2018-04-10 | 2018-07-13 | 博莱阀门（常州）有限公司 | A kind of floating ball valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20190923 |