CN109826968A - The attachment device of spool and valve rod - Google Patents
The attachment device of spool and valve rod Download PDFInfo
- Publication number
- CN109826968A CN109826968A CN201910193472.6A CN201910193472A CN109826968A CN 109826968 A CN109826968 A CN 109826968A CN 201910193472 A CN201910193472 A CN 201910193472A CN 109826968 A CN109826968 A CN 109826968A
- Authority
- CN
- China
- Prior art keywords
- spool
- valve rod
- transition sleeve
- valve
- key
- 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.)
- Pending
Links
- 230000007704 transition Effects 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000956 alloy Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 230000001351 cycling effect Effects 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 208000004141 microcephaly Diseases 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The present invention relates to the attachment devices of a kind of spool and valve rod, it includes valve rod, transition sleeve, spool and connecting key；External screw thread is equipped on the outer wall of valve rod, internal screw thread is equipped on the inner wall of transition sleeve, valve rod, which is screwed with transition sleeve by internal and external threads, makes the two combine closely, key slot of valve rod is offered in the lower end surface of valve rod, spool keyway is offered in the upper surface of spool, connecting key is equipped in key slot of valve rod and spool keyway, valve rod is connected with spool by flat key, valve rod limits the movement of spool radial direction by connecting key, the forming wrapping set of necking shape is connected in the lower end of transition sleeve, forming wrapping set limits the axial movement of spool, there is valve core sealed cover on the spool below forming wrapping set.The invention avoids spool because directly screw need to process spool screw thread caused by process risk improve and processing cost increase；The whole design size of spool can greatly reduce in the present invention, substantially reduce so that the production cost of spool is available.
Description
Technical field
The present invention relates to the device on a kind of valve, the attachment device of specifically a kind of spool and valve rod.
Background technique
Traditional hard alloy spool is mainly used in the valve of Heisui River, Heisui River valve be specific to coal chemical industry bad working environments and
The valve of manufacture is developed, high intensity is resistant to and washes away, is corrosion-resistant, being suitble to High Pressure Difference system.Heisui River valve is mainly used for coal chemical industry technique
Middle gasification and pulp water treatment process realize that control gasification furnace and carbon wash the liquid level of tower, and carry out Multi-stage flash to the Heisui River of discharge
It steams, to recycle buck and heat.It is particularly important in the structure of such harsh operating condition lower valve, to ensure to realize control loop
Normal regulating control and the stable longtime running of equipment safety, just must stability to valve core structure and reliability propose
Requirements at the higher level.
Currently, tradition applies the hard alloy core assembly washed away in operating condition in high intensity, mostly use valve rod and flap straight
The mode that screw thread machinery is fastenedly connected is connect, flap material is integral sintered hard alloy.Since medium is in high speed impact or vibration
Under dynamic operating condition, flap hardness is high, brittleness is big, and shatter, initiation in use sometimes is easy in the operating condition lower Disc of cycling cycling vibration
It resonates bigger to the destructiveness of flap；Simultaneously because flap is hard alloy, hardness is higher, and the mode for processing screw thread is more special
Very, cause the cost for processing screw thread also larger；Simultaneously existing processing solid carbide thread mode precision it is also not high, cause valve rod and
It is larger that flap assembles post gap, is more easier that there is a phenomenon where embrittlement under High Pressure Difference operating condition.From this it can be concluded that traditional
Valve rod and the direct screw thread machinery fastening structure of flap can not reliably meet the application of such operating condition.
Summary of the invention
The purpose of the present invention is overcoming the deficiencies in the prior art, spool processing ruler can be greatly reduced by providing one kind
The attachment device of spool and valve rod very little, that substantially reduce spool processing cost.
According to technical solution provided by the invention, the attachment device of the spool and valve rod, it include valve rod, transition sleeve,
Spool and connecting key；It is equipped with external screw thread on the outer wall of valve rod, internal screw thread, valve rod and transition sleeve are equipped on the inner wall of transition sleeve
Being screwed by internal and external threads makes the two combine closely, and offers key slot of valve rod in the lower end surface of valve rod, opens in the upper surface of spool
Equipped with spool keyway, connecting key is equipped in key slot of valve rod and spool keyway, valve rod is connected with spool by flat key, and valve rod passes through
Connecting key limits the movement of spool radial direction, is connected with the forming wrapping set of necking shape in the lower end of transition sleeve,
Forming wrapping set limits the axial movement of spool, has valve core sealed cover on the spool below forming wrapping set.
Valve rod pin hole is offered on valve rod, transition sleeve pin hole is offered on transition sleeve, in transition sleeve pin hole and valve rod
Check pin is fitted in pin hole.
There are a distances between the lower end and valve core sealed cover of the forming wrapping set.
The forming wrapping set has microcephaly end internal conical surface directed downwardly, and spool has small head end outer conical surface directed downwardly,
Internal conical surface is bonded with outer conical surface so that forming wrapping set limits the axial movement of spool.
The invention has the advantages that
1, spool is connected with valve rod by the bound edge threaded engagement mode of transition sleeve, is avoided spool and is needed to process because directly screwing
Risk is processed caused by spool screw thread and is improved increases with processing cost；It also avoids simultaneously because spool accuracy of screw machining is not high
And the fit-up gap generated is excessive, and then further threatens the risk of the normal use of valve.
2, due between the sealing surface of spool and forming wrapping set there are a distance, tiny seal spool surface damage,
Meet the requirement of valve and sealing surface being processed by reusing, maintenance utilization rate is high.
3, due to the form using transition sleeve, the whole design size of spool can be greatly reduced, so that the life of spool
Produce that cost is available substantially reduces.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Specific embodiment
The present invention is further explained in the light of specific embodiments.
The attachment device of the spool and valve rod, it includes valve rod 1, transition sleeve 2, spool 3 and connecting key 4；In the outer of valve rod 1
Wall is equipped with external screw thread, internal screw thread is equipped on the inner wall of transition sleeve 2, valve rod 1 and transition sleeve 2 are screwed by internal and external threads makes two
Person combines closely, and offers key slot of valve rod in the lower end surface of valve rod 1, spool keyway is offered in the upper surface of spool 3, in valve rod
Connecting key 4 is equipped in keyway and spool keyway, valve rod 1 is connected with spool 3 by flat key 4, and valve rod 1 is limited by connecting key 4
The movement of 3 radial direction of spool is connected with the forming wrapping set 21 of necking shape, forming wrapping in the lower end of transition sleeve 2
Set 21 limits the axial movement of spool 3, has valve core sealed cover 31 on the spool 3 below forming wrapping set 21.
Valve rod pin hole is offered on valve rod 1, transition sleeve pin hole is offered on transition sleeve 2, in transition sleeve pin hole and valve
Check pin 5 is fitted in lever pin hole.It can prevent from occurring between the internal screw thread on the external screw thread on valve rod 1 and transition sleeve 2 in this way
Loose phenomenon.
There are a distances between the lower end and valve core sealed cover 34 of the forming wrapping set 21.In this way convenient for washing away
The damage of cavitation erosion back valve core sealing surface 34 is repaired.
The forming wrapping set 21 has small head end internal conical surface 22 directed downwardly, and spool 3 has small head end outer circle directed downwardly
The conical surface 32, internal conical surface 22 is bonded with outer conical surface 32 so that forming wrapping set 21 limits the axial movement of spool 3.
When installation, first that valve rod 1 is horizontal fixed, then spool 2 is connected with valve rod 1, makes spool 2 and valve by connecting key 4
Bar 1 is relatively fixed.By rotating transition sleeve 2, valve rod 1 is slowly screwed with transition sleeve 2 by internal and external threads, at the same time, at
Type bound edge set 21 gradually fixes spool 3 during internal and external threads screw.When the external screw thread of valve rod 1 is screwed into end, valve
Core 3 is fitted closely with valve rod 1.Increase straight pin 5 in the engaging portion of valve rod 1 and spool 3, it is therefore an objective to prevent screw thread from occurring loosening now
As.
In order to facilitate transition sleeve 2 and valve rod 1, the outer wall of transition sleeve 2 can be designed to regular hexagon shape, by transition sleeve
Certain section of valve rod 1 of 2 tops is designed to the shape with a pair of of parallel surface.
Claims (4)
1. the attachment device of a kind of spool and valve rod, it includes valve rod (1), transition sleeve (2), spool (3) and connecting key (4)；Its
It is characterized in: is equipped with external screw thread on the outer wall of valve rod (1), internal screw thread, valve rod (1) and mistake is equipped on the inner wall of transition sleeve (2)
Crossing set (2) and being screwed by internal and external threads makes the two combine closely, and key slot of valve rod is offered in the lower end surface of valve rod (1), in spool
(3) upper surface offers spool keyway, and connecting key (4), valve rod (1) and spool are equipped in key slot of valve rod and spool keyway
(3) it is connected by flat key (4), valve rod (1) limits the movement of spool (3) radial direction by connecting key (4), in transition sleeve
(2) lower end is connected with the forming wrapping set (21) of necking shape, and forming wrapping set (21) limits the axial direction of spool (3)
It moves, there are valve core sealed cover (31) on the spool (3) below forming wrapping set (21).
2. the connection structure of spool as described in claim 1 and valve rod, it is characterized in that: offering valve lever pin on valve rod (1)
Hole offers transition sleeve pin hole on transition sleeve (2), and check pin (5) are housed in transition sleeve pin hole and valve rod pin hole interpolation.
3. the connection structure of spool as described in claim 1 and valve rod, it is characterized in that: the lower end of the forming wrapping set (21)
There are a distances between portion and valve core sealed cover (34).
4. the connection structure of spool as described in claim 1 and valve rod, it is characterized in that: the forming wrapping set (21) is with small
Head end internal conical surface directed downwardly (22), spool (3) have small head end outer conical surface directed downwardly (32), internal conical surface (22) and outer circle
The conical surface (32) is bonded so that forming wrapping set (21) limits the axial movement of spool (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910193472.6A CN109826968A (en) | 2019-03-14 | 2019-03-14 | The attachment device of spool and valve rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910193472.6A CN109826968A (en) | 2019-03-14 | 2019-03-14 | The attachment device of spool and valve rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109826968A true CN109826968A (en) | 2019-05-31 |
Family
ID=66869007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910193472.6A Pending CN109826968A (en) | 2019-03-14 | 2019-03-14 | The attachment device of spool and valve rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109826968A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151558A (en) * | 2021-11-29 | 2022-03-08 | 重庆川仪调节阀有限公司 | Valve core and valve rod connecting mechanism and assembling method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201909048U (en) * | 2010-11-22 | 2011-07-27 | 神华集团有限责任公司 | Globe valve |
| CN206329811U (en) * | 2016-12-14 | 2017-07-14 | 吴忠仪表有限责任公司 | High Pressure Difference fluid condition resistance to erosion valve element |
| CN207195694U (en) * | 2017-08-05 | 2018-04-06 | 玉环迅琪阀门制造有限公司 | A kind of novel cutoff valve |
| CN207297921U (en) * | 2017-10-18 | 2018-05-01 | 自贡中兴耐磨新材料有限公司 | A kind of valve core valve stem component of control valve |
| CN209943554U (en) * | 2019-03-14 | 2020-01-14 | 无锡智能自控工程股份有限公司 | Connecting device of valve core and valve rod |
-
2019
- 2019-03-14 CN CN201910193472.6A patent/CN109826968A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201909048U (en) * | 2010-11-22 | 2011-07-27 | 神华集团有限责任公司 | Globe valve |
| CN206329811U (en) * | 2016-12-14 | 2017-07-14 | 吴忠仪表有限责任公司 | High Pressure Difference fluid condition resistance to erosion valve element |
| CN207195694U (en) * | 2017-08-05 | 2018-04-06 | 玉环迅琪阀门制造有限公司 | A kind of novel cutoff valve |
| CN207297921U (en) * | 2017-10-18 | 2018-05-01 | 自贡中兴耐磨新材料有限公司 | A kind of valve core valve stem component of control valve |
| CN209943554U (en) * | 2019-03-14 | 2020-01-14 | 无锡智能自控工程股份有限公司 | Connecting device of valve core and valve rod |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151558A (en) * | 2021-11-29 | 2022-03-08 | 重庆川仪调节阀有限公司 | Valve core and valve rod connecting mechanism and assembling method |
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