CN205446869U - Motorised valve and valve -stem nut thereof - Google Patents
Motorised valve and valve -stem nut thereof Download PDFInfo
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- CN205446869U CN205446869U CN201620227540.8U CN201620227540U CN205446869U CN 205446869 U CN205446869 U CN 205446869U CN 201620227540 U CN201620227540 U CN 201620227540U CN 205446869 U CN205446869 U CN 205446869U
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Abstract
The utility model relates to a motorised valve and valve -stem nut thereof to the valve -stem nut of motorised valve damages the back and dismantles and change difficult problem among the solution prior art. For solving this technical problem, the utility model discloses a motorised valve has linked firmly the bush at this internal detachably of nut, bush cartridge coaxially is originally internal at the nut, screw nut drive mechanism has been constituteed with valve rod threaded connection to the bush, so the time nut body transmit the valve rod with drive valve rod axial displacement with the rotation of motor via the bush, the part of directly bearing the axial force that valve rod axial translation causes at this in -process is the bush but not the nut body, the bush because of the long term operation damage the back only need to take off the bush of more renewing again with the bush on by the nut body can, need not to change the nut body, correspondingly dismantlement and installation with regard to also not carrying out the bearing, simplified greatly and carried out the speed of maintaining to the motorised valve.
Description
Technical field
This utility model relates to a kind of electrodynamic valve and valve stem nut thereof.
Background technology
Electrodynamic valve is mainly made up of electric device and valve two parts, the motion of the electric device valve stem nut through being connected therewith is transferred to valve rod, valve stem nut and valve rod constitute feed screw nut width with by valve stem nut circumferentially rotate be converted into valve rod move axially drive valve opening and closing.And find that during axial force after valve stem nut is for a long time, helicitic texture is the most destroyed, in turn results in the locked of valve stem nut and valve rod, this not only lowers the service life of part at work, also dismounting, trimming for parts bring great inconvenience.
Chinese patent CN204533728U discloses the gate valve of a kind of band blow down valve, the middle part of the valve stem nut of this gate valve has the flange of the annular concentric with valve stem nut, the lower section of the outer peripheral face upper flange of valve stem nut is arranged with the first flat thrust bearing, the top of the outer peripheral face upper flange of valve stem nut is arranged with the second flat thrust bearing, and make the lower circle of the first flat thrust bearing coordinate with the diapire block of rack groove, the bearing gland for limiting the second axial position of thrust bearing it is installed with above the second thrust bearing, by the flat thrust bearing that undertake axial force sheathed at the two ends of valve stem nut, also the driving power of valve rod it is effectively improved while reducing axial force suffered by valve stem nut.But valve stem nut is still directly spirally connected with valve rod in the scheme disclosed in this patent, valve stem nut should undertake gearing and undertake again and valve rod moves axially the axial force transmission that causes to the intermal force of thrust bearing, the flank being chronically at this kind of operating mode lower valve rod nut is the most impaired, if the flank of valve stem nut is destroyed, need to remain a need for during the valve stem nut more renewed thrust bearing being dismantled and reinstalling, and difficult to dismounting and the replacing of valve stem nut in electrodynamic valve, the maintenance for electrodynamic valve is made troubles.
Summary of the invention
The purpose of this utility model is the problem providing a kind of electrodynamic valve to solve to dismantle and change difficulty after the valve stem nut of electrodynamic valve damages in prior art；The purpose of this utility model also resides in provides the valve stem nut used in said electric valve.
For solving this technical problem, electrodynamic valve valve stem nut of the present utility model by the following technical solutions:
Electrodynamic valve valve stem nut, for being fixedly connected with a motor shaft and be transferred to by the power of motor valve rod to control valve opening and closing, described valve stem nut includes the nut body being fixed on motor shaft and is removably connected in the lining on nut body, described nut body includes the bearing mounting structure that arch thrust bearing is installed, it is opened in the valve rod installation through hole passed through for valve rod in the middle part of nut body and the groove that for lining embed installation coaxial with described valve rod installation through hole being opened on nut body end face, described lining is arranged in described groove and coaxial with nut body, the inner surface of described lining has the thread segment that the correspondent section with valve rod matches, described thread segment cooperatively forms screw nut driven mechanism with described threaded stem and circumferentially rotating of lining is converted into moving axially of valve rod.
Described groove is opened in the lower surface of nut body and its degree of depth is identical with the length of described lining, it is concordant with the lower surface of nut body that lining is inserted in this groove and its lower surface with being completely embedded into, be coated with at the lower surface that lining engages with nut body that axis extends up and down lining to be fixed on the screw on described nut body.
On the outer peripheral face of described lining and nut body groove inwall on offer the flank that is mutually matched with Screw assembly both realizing.
Electrodynamic valve of the present utility model is by the following technical solutions:
nullA kind of electrodynamic valve，Including for controlling the valve rod of valve opening and closing and for the power of motor being transferred to the valve stem nut of valve rod，Valve stem nut is fixedly connected with a motor shaft，It is characterized in that: described valve stem nut includes the nut body being fixed on motor shaft and is removably connected in the lining on nut body，Described nut body includes the bearing mounting structure that arch thrust bearing is installed、It is opened in the valve rod installation through hole passed through for valve rod in the middle part of nut body and the groove that for lining embed installation coaxial with described valve rod installation through hole being opened on nut body end face，Described lining is arranged in described groove and coaxial with nut body，The inner surface of described lining has the thread segment that the correspondent section with valve rod matches，Described thread segment cooperatively forms screw nut driven mechanism with described threaded stem and circumferentially rotating of lining is converted into moving axially of valve rod.
Described groove is opened in the lower surface of nut body and its degree of depth is identical with the length of described lining, it is concordant with the lower surface of nut body that lining is inserted in this groove and its lower surface with being completely embedded into, be coated with at the lower surface that lining engages with nut body that axis extends up and down lining to be fixed on the screw on described nut body.
On the outer peripheral face of described lining and nut body groove inwall on offer the flank that is mutually matched with Screw assembly both realizing.
Analysis to the beneficial effects of the utility model: in electrodynamic valve of the present utility model, valve stem nut includes nut body and is removably connected in the lining on nut body, lining is inserted in nut body coaxially, lining is connected with threaded stem and constitutes screw nut driven mechanism, so time nut body by the rotation of motor via lining be delivered to valve rod with drive valve rod move axially, the part directly taking on the axial force caused by valve rod axial translation in the process is lining rather than nut body, lining only need to be by lining by taking off the lining the most more renewed on nut body after damaging because of long-term work, without changing nut body, the most just it is not required to carry out dismounting and the installation of bearing, enormously simplify the speed that electrodynamic valve is keeped in repair.
Accompanying drawing explanation
Fig. 1 is the structural representation that an embodiment of electrodynamic valve valve stem nut in this utility model is connected with valve rod and electric device.
Detailed description of the invention
The embodiment of electrodynamic valve:
Electrodynamic valve includes motor part 1 and valve, the power driving motor in motor part 1 is transferred to valve rod 3 through valve stem nut, and by valve rod 3 drive flap along valve seat move axially realize valve keying control, valve stem nut includes nut body 5 and lining 4, and the structural representation that valve stem nut is connected with motor part and valve rod is as shown in Figure 1.
Being fixed with support 2 between motor part and valve gap, support 2 is connected in motor part by bolt, and the middle part of support 2 offers opening up groove 21, and the bottom of groove 21 offers the middle through-hole that can pass for valve rod 3.The upper end of valve rod 3 is through this middle through-hole 32 and stretches into the opening of groove 21, and the shaft part stretched in groove 21 of valve rod 3 has external screw thread；Lining 4 thread set coaxially matched with its flank in the upper end of valve rod 3, lining 4 have external screw thread face and coaxially thread cartridge on the inner surface of nut body 5；The middle part of nut body 5 has the valve rod installation through hole passed for valve rod 3 and its upper end is fixed with motor shaft, the lower end of nut body 5 offers and is completely embedded into the thread groove of installation for lining 4, and coaxial and thread groove the degree of depth of through hole installed by thread groove with valve rod, and identical with the height of lining 4 to be installed on the lower surface of this thread groove back bush with guarantee lining 4 embedding concordant with the lower surface of nut body 5.Joint on lining 4 lower surface with nut body 5 offers vertically extending screwed hole 8, and screw is installed in screwed hole 8 and realizes lining 4 and be connected with the fixing of nut body 5.Having the flange 51 of annular on the outer peripheral face of nut body 5, the upper and lower of flange 51 is provided with two dual thrust bearings 6, the bearing gland 7 being also arranged above axial displacement for limiting bearing of the dual thrust bearing 6 of top.
The erection sequence of this part valve stem nut is as follows: be first fully screwed into by lining 4 in the thread groove of nut body 5 so that both lower surface flush, in the screwed hole of both joints, install screw again realize both fixing connections, the both sides up and down of the flange 51 again two dual thrust bearings 6 being closely installed on nut body 5, the overall spinning assembled on the top of valve rod 3 and is covered bearing gland 7, finally the upper end of nut body 5 and motor shaft fixed and powered part is connected in through bolt the top of support 2, completing assembling.
In other embodiments: also can be connected by pin, form that is bonded or that snap connection realizes nut body and is connected with the fixing of lining；Lining is not also to be fully inserted in nut body but part is inlaid in nut body with exposing.
The embodiment of valve stem nut:
The concrete structure of valve stem nut is identical with the concrete structure of valve stem nut in the embodiment of electrodynamic valve, is not described in detail in this.
Claims (6)
1. electrodynamic valve valve stem nut, for being fixedly connected with a motor shaft and be transferred to by the power of motor valve rod to control valve opening and closing, it is characterized in that: described valve stem nut includes the nut body being fixed on motor shaft and is removably connected in the lining on nut body, described nut body includes the bearing mounting structure that arch thrust bearing is installed, it is opened in the valve rod installation through hole passed through for valve rod in the middle part of nut body and the groove that for lining embed installation coaxial with described valve rod installation through hole being opened on nut body end face, described lining is arranged in described groove and coaxial with nut body, the inner surface of described lining has the thread segment that the correspondent section with valve rod matches, described thread segment cooperatively forms screw nut driven mechanism with described threaded stem and circumferentially rotating of lining is converted into moving axially of valve rod.
Electrodynamic valve valve stem nut the most according to claim 1, it is characterized in that: described groove is opened in the lower surface of nut body and its degree of depth is identical with the length of described lining, it is concordant with the lower surface of nut body that lining is inserted in this groove and its lower surface with being completely embedded into, be coated with at the lower surface that lining engages with nut body that axis extends up and down lining to be fixed on the screw on described nut body.
Electrodynamic valve valve stem nut the most according to claim 2, it is characterised in that: on the outer peripheral face of described lining and nut body groove inwall on offer the flank that is mutually matched with Screw assembly both realizing.
null4. an electrodynamic valve，Including for controlling the valve rod of valve opening and closing and for the power of motor being transferred to the valve stem nut of valve rod，Valve stem nut is fixedly connected with a motor shaft，It is characterized in that: described valve stem nut includes the nut body being fixed on motor shaft and is removably connected in the lining on nut body，Described nut body includes the bearing mounting structure that arch thrust bearing is installed、It is opened in the valve rod installation through hole passed through for valve rod in the middle part of nut body and the groove that for lining embed installation coaxial with described valve rod installation through hole being opened on nut body end face，Described lining is arranged in described groove and coaxial with nut body，The inner surface of described lining has the thread segment that the correspondent section with valve rod matches，Described thread segment cooperatively forms screw nut driven mechanism with described threaded stem and circumferentially rotating of lining is converted into moving axially of valve rod.
Electrodynamic valve the most according to claim 4, it is characterized in that: described groove is opened in the lower surface of nut body and its degree of depth is identical with the length of described lining, it is concordant with the lower surface of nut body that lining is inserted in this groove and its lower surface with being completely embedded into, be coated with at the lower surface that lining engages with nut body that axis extends up and down lining to be fixed on the screw on described nut body.
Electrodynamic valve the most according to claim 5, it is characterised in that: on the outer peripheral face of described lining and nut body groove inwall on offer the flank that is mutually matched with Screw assembly both realizing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620227540.8U CN205446869U (en) | 2016-03-23 | 2016-03-23 | Motorised valve and valve -stem nut thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620227540.8U CN205446869U (en) | 2016-03-23 | 2016-03-23 | Motorised valve and valve -stem nut thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205446869U true CN205446869U (en) | 2016-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620227540.8U Active CN205446869U (en) | 2016-03-23 | 2016-03-23 | Motorised valve and valve -stem nut thereof |
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| CN (1) | CN205446869U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641414A (en) * | 2016-12-05 | 2017-05-10 | 常熟市虞菱机械有限责任公司 | Valve driving device capable of being arranged on electric executing mechanism |
| CN107061862A (en) * | 2017-06-01 | 2017-08-18 | 东方电气集团东方汽轮机有限公司 | A kind of valve crosshead connecting structure |
| CN107654681A (en) * | 2017-08-28 | 2018-02-02 | 铜陵百锐设备配件有限公司 | A kind of Novel-parallel gate valve |
| CN108942740A (en) * | 2018-08-07 | 2018-12-07 | 德维阀门铸造（苏州）股份有限公司 | A kind of valve rod torque detection fixture of more turning valves |
| CN110561032A (en) * | 2018-06-06 | 2019-12-13 | 中国石油天然气股份有限公司 | valve copper bush dismounting method and valve copper bush replacing method |
-
2016
- 2016-03-23 CN CN201620227540.8U patent/CN205446869U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106641414A (en) * | 2016-12-05 | 2017-05-10 | 常熟市虞菱机械有限责任公司 | Valve driving device capable of being arranged on electric executing mechanism |
| CN107061862A (en) * | 2017-06-01 | 2017-08-18 | 东方电气集团东方汽轮机有限公司 | A kind of valve crosshead connecting structure |
| CN107654681A (en) * | 2017-08-28 | 2018-02-02 | 铜陵百锐设备配件有限公司 | A kind of Novel-parallel gate valve |
| CN110561032A (en) * | 2018-06-06 | 2019-12-13 | 中国石油天然气股份有限公司 | valve copper bush dismounting method and valve copper bush replacing method |
| CN108942740A (en) * | 2018-08-07 | 2018-12-07 | 德维阀门铸造（苏州）股份有限公司 | A kind of valve rod torque detection fixture of more turning valves |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |