CN204430997U - A kind of novel valve device for grinding sealing face - Google Patents
A kind of novel valve device for grinding sealing face Download PDFInfo
- Publication number
- CN204430997U CN204430997U CN201520099547.1U CN201520099547U CN204430997U CN 204430997 U CN204430997 U CN 204430997U CN 201520099547 U CN201520099547 U CN 201520099547U CN 204430997 U CN204430997 U CN 204430997U
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- Prior art keywords
- taper shank
- grinding
- transition disc
- abrasive disk
- eccentric
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Abstract
The utility model discloses a kind of novel valve device for grinding sealing face, taper shank power transmission shaft outer setting has taper shank housing, taper shank case inside is provided with spring, spring bottom is connected with eccentric shaft, eccentric shaft outer setting has eccentric bushing, screw is provided with between taper shank housing and eccentric bushing, transition disc is connected with bottom eccentric shaft, be connected with active coiling bottom transition disc, active dish is connected with abrasive disk, the utility model instead of traditional lapping device, grinding efficiency is high, labour intensity can be reduced, the good product quality of simultaneous grinding, adopt lapping device of the present utility model, because before the relative velocity ratio between friction box and abrasive disk, a kind of mode is much smaller, efficiently reduce the wearing and tearing between friction box and abrasive disk, transition disc bronze manufactures, the running-in ability enhanced between transition disc and active dish reduces the wearing and tearing between them, transition disc is not directly and absorption surface, can reduce because trade union college is out-of-level, and to the harmful effect that attrition process is brought.
Description
[technical field]
The utility model relates to valve processing technique field, specifically a kind of novel valve device for grinding sealing face.
[background technology]
The sealing of valve realizes by valve seat and flap, in order to ensure the sealing property of valve, requires that valve seat and flap work in-process have higher surface roughness and flatness, therefore needs to grind its sealing surface.The quality of attrition process and efficiency, will directly affect quality and the production efficiency of valve, therefore, the processing of flap and valve seat in valve is the key during valve is produced.The quality of attrition process and efficiency, will directly affect quality and the production efficiency of valve.
The attrition process at initial stage adopts the mode of hand lapping, its milling tool is made up of abrasive disk and handle, abrasive disk cylinder iron makes, handle is housed thereon, move handle with hand to grind, this lapping mode has the shortcoming that labour intensity is large, production efficiency is low, is the Ginding process of initial stage.
For the shortcoming of elementary Ginding process, particularly for the feature of large bore valves sealing surface, and then have developed mechanical polishing tool, its structure is made up of taper shank power transmission shaft, transition disc, abrasive disk.Taper shank power transmission shaft is connected with radial drilling machine main shaft.Drive shaft axis and transition disc axis are eccentric, and its offset is determined according to the size of sealing surface.When drill press spindle rotates, taper shank power transmission shaft and transition disc is driven to rotate.Transition disc drives abrasive disk to rotate by frictional force and makes it to grind workpiece.Due to the effect of bias, abrasive disk produces to rotate and moves with oscillating quantity kind.Form non-Circular test, be conducive to attrition process.It is good that this milling tool has Grinding Quality, efficiency advantages of higher, and significantly reduce labour intensity.But there are some shortcomings in this lapping mode: between transition disc and abrasive disk, relative motion is comparatively large, thus can produce larger frictional force, cause transition disc and abrasive disk serious wear.If processed trade union college levelness is not high, cause abrasive disk and absorption surface area little, grinding efficiency decline, therefore require that workpiece has higher installation accuracy.
Therefore, for overcome above-mentioned technology deficiency and design a efficiently reduce friction box and abrasive disk between wearing and tearing, grinding efficiency is high, and labour intensity is little, the measured a kind of novel valve device for grinding sealing face of abrasive product matter, inventor's problem to be solved just.
[utility model content]
For the deficiencies in the prior art, the purpose of this utility model is to provide a kind of novel valve device for grinding sealing face, and its structure is simple, use, efficiently reduce the wearing and tearing between friction box and abrasive disk, grinding efficiency is high, labour intensity is little, and abrasive product quality is good.
The utility model solves the technical scheme that its technical problem adopts: a kind of novel valve device for grinding sealing face, it comprises taper shank housing, taper shank power transmission shaft, screw, spring, eccentric shaft, eccentric bushing, friction box, transition disc, active dish, abrasive disk, described taper shank power transmission shaft outer setting has taper shank housing, described taper shank case inside is provided with spring, described spring bottom is connected with eccentric shaft, described eccentric shaft outer setting has eccentric bushing, screw is provided with between described taper shank housing and eccentric bushing, transition disc is connected with bottom described eccentric shaft, be connected with active coiling bottom transition disc, described active dish is connected with abrasive disk, described abrasive disk outer setting has friction box.
Further, described friction box and abrasive disk junction are provided with fastening bolt.
Further, the hole of described eccentric shaft and eccentric bushing is eccentric structure.
Further, described transition disc is bronze saw lumber matter.
The beneficial effects of the utility model are:
1, the utility model instead of traditional lapping device, grinding efficiency is high, labour intensity can be reduced, the good product quality of simultaneous grinding, adopt lapping device of the present utility model, because before the relative velocity ratio between friction box and abrasive disk, a kind of mode is much smaller, efficiently reduce the wearing and tearing between friction box and abrasive disk, transition disc bronze manufactures, the running-in ability enhanced between transition disc and active dish reduces the wearing and tearing between them, transition disc is not directly and absorption surface, can reduce because trade union college is out-of-level, and to the harmful effect that attrition process is brought.
[accompanying drawing explanation]
Fig. 1 is the utility model lapping device structural representation.
Description of reference numerals: 1-taper shank housing; 2-taper shank power transmission shaft; 3-screw; 4-spring; 5-eccentric shaft; 6-eccentric bushing; 7-fastening bolt; 8-rubs box; 9-transition disc; The active dish of 10-; 11-abrasive disk.
[detailed description of the invention]
Below in conjunction with specific embodiment, set forth the utility model further, should be understood that these embodiments are only not used in restriction scope of the present utility model for illustration of the utility model.In addition should be understood that those skilled in the art can make various changes or modifications the utility model after the content of having read the utility model instruction, these equivalent form of values drop on application appended claims limited range equally.
See Fig. 1, for a kind of novel valve device for grinding sealing face of the utility model structural representation, it comprises taper shank housing 1, taper shank power transmission shaft 2, screw 3, spring 4, eccentric shaft 5, eccentric bushing 6, fastening bolt 7, friction box 8, transition disc 9, active dish 10, abrasive disk 11, described taper shank power transmission shaft 2 outer setting has taper shank housing 1, spring 4 is provided with inside described taper shank housing 1, be connected with eccentric shaft 5 bottom described spring 4, described eccentric shaft 5 outer setting has eccentric bushing 6, screw 3 is provided with between described taper shank housing 1 and eccentric bushing 6, transition disc 9 is connected with bottom described eccentric shaft 5, be connected with active dish 10 bottom transition disc 9, described active dish 10 is connected with abrasive disk 11, described abrasive disk 11 outer setting has friction box 8.
Friction box 8 is provided with fastening bolt 7 with abrasive disk 11 junction, and eccentric shaft 5 is eccentric structure with the hole of eccentric bushing 6, and transition disc 9 is bronze saw lumber matter.
Process of lapping, lap tool and sealing ring surface well fit together, and lap tool does complicated grinding campaign along coating surface.Grinding agent is placed with between lap tool and sealing surface surface, when lap tool and the relative motion of sealing ring surface, part in grinding agent is ground grain and is slided between lap tool and sealing ring surface or roll, cut the layer of metal that sealing ring is very thin on the surface, first convex peak part on sealing ring surface is ground off, and then gradually meets the requirements of geometry.The mechanical processing process of abrasive material to metal is not only in grinding, also has chemical action simultaneously.Grease in grinding agent can make surface to be machined form oxide-film, thus accelerates process of lapping.
The general principle of sealing surface grinding comprises process of lapping, grinding motion, grinding rate, grinding pressure and grind five aspects.
Grinding motion, when lap tool and the relative motion of sealing ring surface, sealing ring on the surface every bit all should be identical to the relative sliding distance of lap tool.Further, the direction of relative motion should constantly be changed.The continuous change of the direction of motion makes each abrasive particle can not repeat the track of oneself motion on the surface at sealing ring, in order to avoid cause obvious polishing scratch and increase the roughness on sealing ring surface.In addition, the continuous change of the direction of motion can also make grinding agent distribute more even, thus cuts the metal on sealing ring surface more equably.Although grinding motion is complicated, although the direction of motion is in change, but grinding motion is carry out along the coating surface on lap tool and sealing ring surface all the time, no matter be hand lapping or mechanical lapping, the geometrical precision on sealing ring surface is then mainly by the geometrical precision of lap tool and the impact of grinding motion.
Grinding rate, the speed of grinding motion is faster, and the efficiency of grinding is also higher.Grinding rate is fast, and the abrasive particle within the unit interval, surface of the work passed through is many, and the metal cut is also many.The grinding rate of valve sealing face is relevant with the material of sealing surface, and the grinding rate of copper and cast iron sealing surface is 10 ~ 45m/min; Hardened steel and carbide alloy sealing surface are 25 ~ 80m/m; Austenitic stainless steel sealing surface is 10 ~ 25m/min.
Grinding pressure, grinding efficiency improves with the increase of grinding pressure, and grinding pressure can not be excessive, is generally 0.01 ~ 0.1MPa.When grinding the sealing surface of cast iron, copper and austenitic stainless steel material, grinding pressure is 0.1 ~ 0.3MPa; Hardened steel and carbide alloy sealing surface are 0.15 ~ 0.4MPa, get higher value, get smaller value during lappingout when slightly grinding.
Grind, because grinding is skin processing operation, therefore cutting output is very little.The size of grind depends on and the machining accuracy of last process and surface roughness.Ensureing that under the prerequisite removed last process cutter trade and revise sealing ring error in geometrical form, grind is better less.Should through fine grinding as sealing surface grinding is last.Sealing surface after fine grinding can direct lappingout, and its minimum grind is: diameter surplus is 0.008 ~ 0.020mm; Demifacet surplus is 0.006 ~ 0.015mm.Hand lapping or material hardness higher time get the small value, mechanical lapping or material hardness lower time take large values.Valve body sealing surface inconvenience grinding, can adopt finish turning, the sealing surface after finish turning slightly must grind and just can carry out lappingout afterwards, and its plane surplus is 0.012 ~ 0.050mm.
Be the utility model structural representation see Fig. 1, have a spring 4, make the pressure adjustable of grinding between taper shank housing 1 and eccentric bushing 6, eccentric shaft 5 is all processed into eccentric structure with the hole of eccentric bushing 6.When eccentric direction is consistent, maximum offset can be reached, otherwise then offset is minimum.Offset can be stepless between maximum and minimum adjustment.
Regulated rear screw 3 to lock, transition disc 9 drives active dish 10 to rotate, and realizes attrition process.Because before the relative velocity ratio between friction box 8 and abrasive disk 11, a kind of mode is much smaller, efficiently reduce the wearing and tearing between friction box and abrasive disk, transition disc 9 bronze manufactures, the running-in ability enhanced between transition disc 9 and active dish 10 reduces the wearing and tearing between them, because transition disc 9 is not direct and absorption surface, can reduce because trade union college is out-of-level, and to the harmful effect that attrition process is brought, therefore lower to the required precision that is installed of workpiece.
Claims (4)
1. a novel valve device for grinding sealing face, it is characterized in that: it comprises taper shank housing, taper shank power transmission shaft, screw, spring, eccentric shaft, eccentric bushing, friction box, transition disc, active dish, abrasive disk, described taper shank power transmission shaft outer setting has taper shank housing, described taper shank case inside is provided with spring, described spring bottom is connected with eccentric shaft, described eccentric shaft outer setting has eccentric bushing, screw is provided with between described taper shank housing and eccentric bushing, transition disc is connected with bottom described eccentric shaft, be connected with active coiling bottom transition disc, described active dish is connected with abrasive disk, described abrasive disk outer setting has friction box.
2. a kind of novel valve device for grinding sealing face according to claim 1, is characterized in that: described friction box and abrasive disk junction are provided with fastening bolt.
3. a kind of novel valve device for grinding sealing face according to claim 1, is characterized in that: the hole of described eccentric shaft and eccentric bushing is eccentric structure.
4. a kind of novel valve device for grinding sealing face according to claim 1, is characterized in that: described transition disc is bronze saw lumber matter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520099547.1U CN204430997U (en) | 2015-02-07 | 2015-02-07 | A kind of novel valve device for grinding sealing face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520099547.1U CN204430997U (en) | 2015-02-07 | 2015-02-07 | A kind of novel valve device for grinding sealing face |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204430997U true CN204430997U (en) | 2015-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520099547.1U Expired - Fee Related CN204430997U (en) | 2015-02-07 | 2015-02-07 | A kind of novel valve device for grinding sealing face |
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| CN (1) | CN204430997U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106670923A (en) * | 2016-11-25 | 2017-05-17 | 南通龙源电站阀门有限公司 | Grinding method for valve sealing elements |
| CN106695537A (en) * | 2016-11-25 | 2017-05-24 | 南通龙源电站阀门有限公司 | Eccentric grinding tool for sealing face of valve sealing part |
| CN107127677A (en) * | 2017-06-03 | 2017-09-05 | 哈电集团哈尔滨电站阀门有限公司 | A kind of valve flat seal face grinding tool |
| CN108581691A (en) * | 2018-05-15 | 2018-09-28 | 芜湖杰诺科技有限公司 | A kind of valve outer surface curved surface grinding device |
| CN109702599A (en) * | 2018-11-27 | 2019-05-03 | 大唐湘潭发电有限责任公司 | A kind of mechanical seal dynamic and static ring arrangement for grinding |
| CN109719589A (en) * | 2018-12-20 | 2019-05-07 | 中国海洋石油集团有限公司 | A kind of grinding prosthetic device of sealing surface of safety valve |
| CN111906685A (en) * | 2020-08-11 | 2020-11-10 | 三门核电有限公司 | A grinder for narrow and small space |
-
2015
- 2015-02-07 CN CN201520099547.1U patent/CN204430997U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106670923A (en) * | 2016-11-25 | 2017-05-17 | 南通龙源电站阀门有限公司 | Grinding method for valve sealing elements |
| CN106695537A (en) * | 2016-11-25 | 2017-05-24 | 南通龙源电站阀门有限公司 | Eccentric grinding tool for sealing face of valve sealing part |
| CN107127677A (en) * | 2017-06-03 | 2017-09-05 | 哈电集团哈尔滨电站阀门有限公司 | A kind of valve flat seal face grinding tool |
| CN108581691A (en) * | 2018-05-15 | 2018-09-28 | 芜湖杰诺科技有限公司 | A kind of valve outer surface curved surface grinding device |
| CN108581691B (en) * | 2018-05-15 | 2020-09-15 | 芜湖杰诺科技有限公司 | Outer surface curved surface grinding device for valve |
| CN109702599A (en) * | 2018-11-27 | 2019-05-03 | 大唐湘潭发电有限责任公司 | A kind of mechanical seal dynamic and static ring arrangement for grinding |
| CN109719589A (en) * | 2018-12-20 | 2019-05-07 | 中国海洋石油集团有限公司 | A kind of grinding prosthetic device of sealing surface of safety valve |
| CN111906685A (en) * | 2020-08-11 | 2020-11-10 | 三门核电有限公司 | A grinder for narrow and small space |
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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: 20150701 Termination date: 20160207 |