CN104075018B - Pipeline stop valve piston push rod - Google Patents
Pipeline stop valve piston push rod Download PDFInfo
- Publication number
- CN104075018B CN104075018B CN201410294511.9A CN201410294511A CN104075018B CN 104075018 B CN104075018 B CN 104075018B CN 201410294511 A CN201410294511 A CN 201410294511A CN 104075018 B CN104075018 B CN 104075018B
- Authority
- CN
- China
- Prior art keywords
- endoporus
- screw thread
- external screw
- rod
- push rod
- 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.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1457—Piston rods
Abstract
The invention discloses a kind of pipeline stop valve piston push rod, including head rod, the second connecting rod, intermediate connecting sleeve, head rod includes middle interconnecting piece, the first external screw thread of being connected with middle interconnecting piece two ends, the second external screw thread, the external diameter of middle interconnecting piece is more than the first described external screw thread, the second externally threaded external diameter；Intermediate connecting sleeve is being provided with the first axial endoporus with the link of head rod, it is provided with and the second endoporus of the first female coaxial line at the link with the second connecting rod, first endoporus is provided with the first female thread, intermediate connecting sleeve coordinates with head rod both ends of the surface, and the first external screw thread is connected with piston push rod female thread；Second connecting rod includes union joint, connector, and the outer end of connector is provided with external screw thread, and the cylindrical of connector and the second endoporus are matched in clearance, and union joint is installed in the first endoporus, and external screw thread place is provided with nut。Present configuration is simple, installation, convenient disassembly, and reliability is high, it is possible to ensure the reliably action of spool。
Description
Technical field
The present invention relates to valve switch equipment technical field, particularly to a kind of pipeline stop valve piston push rod。
Background technology
Pipeline stop valve piston push rod of the prior art, structure is complicated, and axiality requires height between each union piece of connecting rod parts, owing to there is the foozle of axiality, connecting rod is being subject to frequently reciprocal load, when being especially in the presence of bigger coaxiality error, make connecting rod be subject to axial force and radial force simultaneously, after connecting rod is subject to bending force radially, connecting rod therein is easily bent deformation, severe patient produces fracture and causes scrapping of whole parts, simultaneously because be subject to the bending force of irregular radial direction, make the piston providing flexible power and push rod mating surface owing to being subject to the effect of power, exacerbate the frictional resistance of relative movement, accelerate the abrasion of fitted seal door between piston and cylinder, make the axial force being supplied to spool not enough, cause the poor reliability of switching spool action, even cause pipeline and equipment fault, cause security incident；Reduce the service life of equipment simultaneously, improve use cost。
Summary of the invention
The purpose of the present invention is exactly for solving the problems referred to above that prior art exists, it is provided that a kind of pipeline stop valve piston push rod；Present configuration is simple, solve in prior art owing to the interconnective various piece of connecting rod exists the breakage problem that the foozle of axiality causes, and piston, cylinder body are because the sealing caused of wearing and tearing is poor, the problem of easy leakage, installation, convenient disassembly, reliability is high, the manufacturing cost of parts is low, it is possible to ensure the reliable and secure ground switch motion of spool。
This invention address that the technical scheme of technical problem is:
A kind of pipeline stop valve piston push rod, including head rod, the second connecting rod, intermediate connecting sleeve, described intermediate connecting sleeve two ends are connected with head rod, the second connecting rod respectively, described head rod is connected with piston push rod, described second connecting rod is connected with spool, described head rod includes middle interconnecting piece, and the first external screw thread of being connected with middle interconnecting piece two ends, the second external screw thread, the external diameter of described middle interconnecting piece is more than the first described external screw thread, the second externally threaded external diameter；Described intermediate connecting sleeve is being provided with the first axial endoporus with the link of head rod, it is provided with and the second endoporus of the first female coaxial line at the link with the second connecting rod, the diameter of described first endoporus is more than the diameter of the second endoporus, described first endoporus is provided with the first female thread, described first female thread and the second external screw thread coordinate, intermediate connecting sleeve coordinates with head rod both ends of the surface, and the first external screw thread is connected with piston push rod female thread；Described second connecting rod includes union joint, connector, the outer end of described connector is provided with external screw thread, the cylindrical of described connector and the second endoporus are matched in clearance, described union joint external diameter is more than the second bore inner diameter, simultaneously less than the internal diameter of the first endoporus, described union joint is installed in the first endoporus, and described external screw thread place is provided with nut。
Described nut is provided with along outer surface to the radially through locking hole of internal thread hole, and locking hole is installed lock-screw。
Described intermediate connecting sleeve is provided with along symmetrically arranged two the first parallel planes of centrage at one end outer round surface connected with the second connecting rod, and described head rod is provided with along symmetrically arranged two the second parallel planes of centrage at outer round surface。
Beneficial effects of the present invention:
1. present configuration is simple, solve in prior art owing to the interconnective various piece of connecting rod exists the breakage problem that the foozle of axiality causes, and piston, cylinder body are because the sealing caused of wearing and tearing is poor, the problem of easy leakage, parts machining, installation, convenient disassembly, reliability is high, and the manufacturing cost of parts is low, it is possible to ensure the reliable and secure ground switch motion of spool, extend the service life of equipment simultaneously, reduce use cost。Particularly when consumable accessory the second connecting rod is damaged or scraps, it is easy to disassembling, assembling and replacing, decrease and prior art need by this component exhaustion and change maintenance, the use cost brought。
2. spool of the present invention is when frequently moving, axial force and radial force threaded engagement that spool is subject to pass to nut, push rod is passed to again through head rod after passing to intermediate connecting sleeve by nut, nut and intermediate connecting sleeve are provided with reserved gap, the inner face of the first endoporus and union joint inner face are provided with predetermined axial gap simultaneously, such second connecting rod is just only subject to the effect of axial force, second connecting rod, and push rod avoids and bears bending force radially, avoid the second connecting rod because the flexural deformation being subject to radial force is even ruptured, it also avoid push rod and piston inner hole simultaneously because local inner surface by radial force frequently and the sealing difference that moves back and forth the concentrated wear caused and cause thus the problem producing leakage。
3. the second connecting rod being connected after putting in place prevents the two from loosening vertically by nut with spool by nut check, is reliably fastenedly connected with external screw thread by nut by lock-screw, it is to avoid produce axially opposing movement and rotation simultaneously。
4. coordinated with spanner respectively by two the first planes, two the second planes, it is simple to the threaded engagement of intermediate connecting sleeve Yu head rod is tightened quickly and easily。
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention。
Detailed description of the invention
In order to be more fully understood that the present invention, explain in detail embodiments of the present invention below in conjunction with accompanying drawing。
As shown in Figure 1, a kind of pipeline stop valve piston push rod, including head rod the 3, second connecting rod 2, intermediate connecting sleeve 1, described intermediate connecting sleeve 1 two ends are connected with head rod the 3, second connecting rod 2 respectively, described head rod 3 is connected with piston push rod, described second connecting rod 2 is connected with spool, described head rod 3 includes middle interconnecting piece 35, first external screw thread the 34, second external screw thread 31 being connected with middle interconnecting piece 35 two ends, the external diameter of described middle interconnecting piece 35 is more than the external diameter of first described external screw thread the 34, second external screw thread 31；Described intermediate connecting sleeve 1 is being provided with the first axial endoporus 11 with the link of head rod 3, it is provided with and the second endoporus 12 of the first endoporus 11 coaxial line at the link with the second connecting rod 2, the diameter of described first endoporus 11 is more than the diameter of the second endoporus 12, described first endoporus 11 is provided with the first female thread 13, described first female thread 13 coordinates with the second external screw thread 31, intermediate connecting sleeve 1 coordinates with head rod 3 both ends of the surface 5, and the first external screw thread 34 is connected with piston push rod female thread；Described second connecting rod 2 includes union joint 22, connector 23, the outer end of described connector 23 is provided with external screw thread 21, cylindrical and second endoporus 12 of described connector 23 are matched in clearance, described union joint 22 external diameter is more than the second endoporus 12 internal diameter, simultaneously less than the internal diameter of the first endoporus 11, and described union joint 22 is installed in the first endoporus 11。Described external screw thread 21 place is provided with nut 4, and described nut 4 is provided with along outer surface to the radially through locking hole 41 of internal thread hole, and locking hole 41 is installed lock-screw。Second connecting rod 2 be connected with spool put in place after prevent the two from loosening vertically by nut 4 locking, nut is reliably fastenedly connected with external screw thread 21 by lock-screw, it is to avoid produce axially opposing movement and rotation simultaneously。
Described intermediate connecting sleeve 1 is provided with along symmetrically arranged two the first parallel planes 14 of centrage at one end outer round surface connected with the second connecting rod 2, and described head rod 3 is provided with along symmetrically arranged two the second parallel planes 32 of centrage at outer round surface。Described 32, two the second planes 14 of two the first planes coordinate with spanner respectively, it is simple to the threaded engagement of intermediate connecting sleeve 1 with head rod 3 tightened。
During use, the first endoporus 11 is stretched into from the end face 5 of intermediate connecting sleeve 1 in external screw thread 21 end of the second connecting rod 2, pass from the second endoporus 12 and be connected with spool, intermediate connecting sleeve 1 and head rod 3 are tightened by threaded engagement, head rod 3 and piston push rod are reliably connected, the second connecting rod 2 is reliably connected with spool, lock-screw on locking nut 4 and locking hole 41, nut 4 and intermediate connecting sleeve 1 are provided with reserved gap, and the inner face 15 of the first endoporus is provided with predetermined axial gap with union joint inner face 24 simultaneously。When piston push rod is in and stretches out state, owing to the inner face 15 of the first endoporus exists axial gap with union joint inner face 24, the cylindrical and the second endoporus 12 that are simultaneously connected with body 23 are matched in clearance, now the right side 42 of nut 4 contacts with the right side 16 of intermediate connecting sleeve 1, push rod overcomes the effect of spring force, make spool pipeline in the conduction state, when spool moves generation axial force, the axial force of spool passes to nut 4 by external screw thread 21, push rod is passed to again through head rod 3 after passing to intermediate connecting sleeve 1 by nut 4, such second connecting rod 2 is just only subject to the effect of axial force, second connecting rod 2, and push rod avoids and bears bending force radially, avoid the second connecting rod 2 because the flexural deformation being subject to radial force is even ruptured, it also avoid push rod and piston inner hole simultaneously because local inner surface by radial force frequently and the sealing difference that moves back and forth the concentrated wear caused and cause thus the problem producing leakage。
When pusher retracted, push rod drives head rod 3, intermediate connecting sleeve 1 is return, the inner face 15 of the first endoporus contacts thus driving the second connecting rod 2 rollback with union joint inner face 24, second connecting rod 2 band movable valve plug moves in the axial direction closedown spool pipeline, the right side 42 of nut 4 disengages with the right side 16 of intermediate connecting sleeve 1, second connecting rod 2 is also only subject to the effect of axial force, avoid the second connecting rod 2 because the flexural deformation being subject to radial force is even ruptured, avoid simultaneously and between push rod and piston hole, produce bending force radially, it also avoid push rod and piston inner hole because local inner surface by radial force frequently and the sealing difference that moves back and forth the concentrated wear caused and cause thus the problem producing leakage。
The detailed description of the invention of invention is described in conjunction with accompanying drawing although above-mentioned; but not limiting the scope of the invention; on the basis of technical scheme, those skilled in the art need not pay various amendments or deformation that creative work can make still within protection scope of the present invention。
Claims (3)
1. a pipeline stop valve piston push rod, it is characterized in that, including head rod, the second connecting rod, intermediate connecting sleeve, described intermediate connecting sleeve two ends are connected with head rod, the second connecting rod respectively, described head rod is connected with piston push rod, described second connecting rod is connected with spool, described head rod includes middle interconnecting piece, the first external screw thread of being connected with middle interconnecting piece two ends, the second external screw thread, the external diameter of described middle interconnecting piece is more than the first described external screw thread, the second externally threaded external diameter；Described intermediate connecting sleeve is being provided with the first axial endoporus with the link of head rod, it is provided with and the second endoporus of the first female coaxial line at the link with the second connecting rod, the diameter of described first endoporus is more than the diameter of the second endoporus, described first endoporus is provided with the first female thread, described first female thread and the second external screw thread coordinate, intermediate connecting sleeve coordinates with head rod both ends of the surface, and the first external screw thread is connected with piston push rod female thread；Described second connecting rod includes union joint, connector, the outer end of described connector is provided with external screw thread, the cylindrical of described connector and the second endoporus are matched in clearance, described union joint external diameter is more than the second bore inner diameter, simultaneously less than the internal diameter of the first endoporus, described union joint is installed in the first endoporus, and the external screw thread place of the outer end of described connector is provided with nut。
2. pipeline stop valve piston push rod as claimed in claim 1, is characterized in that, described nut is provided with along outer surface to the radially through locking hole of internal thread hole, installation lock-screw on locking hole。
3. pipeline stop valve piston push rod as claimed in claim 1, described intermediate connecting sleeve is provided with along symmetrically arranged two the first parallel planes of centrage at one end outer round surface connected with the second connecting rod, and described head rod is provided with along symmetrically arranged two the second parallel planes of centrage at outer round surface。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410294511.9A CN104075018B (en) | 2014-06-26 | 2014-06-26 | Pipeline stop valve piston push rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410294511.9A CN104075018B (en) | 2014-06-26 | 2014-06-26 | Pipeline stop valve piston push rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104075018A CN104075018A (en) | 2014-10-01 |
| CN104075018B true CN104075018B (en) | 2016-06-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410294511.9A Expired - Fee Related CN104075018B (en) | 2014-06-26 | 2014-06-26 | Pipeline stop valve piston push rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104075018B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523192A (en) * | 2016-11-28 | 2017-03-22 | 哈尔滨工程大学 | Reverse actuation type natural gas injection device of gas/dual-fuel engine |
| CN110406963B (en) * | 2019-07-31 | 2021-07-27 | 珠海格力智能装备有限公司 | Push mechanism and production line with same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6352239B1 (en) * | 1999-03-25 | 2002-03-05 | Fmc Corporation | Gate valve actuator override mechanism |
| CN202091092U (en) * | 2011-05-09 | 2011-12-28 | 中阀科技(长沙)阀门有限公司 | Water inflow hydraulic control butterfly valve of water turbine with machine set over-speed protector |
| CN202790566U (en) * | 2012-09-19 | 2013-03-13 | 佛山市海天(高明)调味食品有限公司 | Frequently opened and closed stop valve |
| CN103672057A (en) * | 2013-12-10 | 2014-03-26 | 湖北高中压阀门有限责任公司 | High-pressure safety rapid shut off valve |
| CN203927016U (en) * | 2014-06-26 | 2014-11-05 | 济南大学 | Stop valve piston push rod |
-
2014
- 2014-06-26 CN CN201410294511.9A patent/CN104075018B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6352239B1 (en) * | 1999-03-25 | 2002-03-05 | Fmc Corporation | Gate valve actuator override mechanism |
| CN202091092U (en) * | 2011-05-09 | 2011-12-28 | 中阀科技(长沙)阀门有限公司 | Water inflow hydraulic control butterfly valve of water turbine with machine set over-speed protector |
| CN202790566U (en) * | 2012-09-19 | 2013-03-13 | 佛山市海天(高明)调味食品有限公司 | Frequently opened and closed stop valve |
| CN103672057A (en) * | 2013-12-10 | 2014-03-26 | 湖北高中压阀门有限责任公司 | High-pressure safety rapid shut off valve |
| CN203927016U (en) * | 2014-06-26 | 2014-11-05 | 济南大学 | Stop valve piston push rod |
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| Publication number | Publication date |
|---|---|
| CN104075018A (en) | 2014-10-01 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160622 Termination date: 20210626 |
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| CF01 | Termination of patent right due to non-payment of annual fee |