CN103433704B - A kind of production technology of precise pressure-reducing valve main valve plug - Google Patents

A kind of production technology of precise pressure-reducing valve main valve plug Download PDF

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Publication number
CN103433704B
CN103433704B CN201310364231.6A CN201310364231A CN103433704B CN 103433704 B CN103433704 B CN 103433704B CN 201310364231 A CN201310364231 A CN 201310364231A CN 103433704 B CN103433704 B CN 103433704B
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CN
China
Prior art keywords
valve rod
forcing press
adapter sleeve
steel ball
sulfuration
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Application number
CN201310364231.6A
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Chinese (zh)
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CN103433704A (en
Inventor
胡琼洁
蒋太定
王胜平
Original Assignee
浙江百灵气动科技有限公司
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Priority to CN201310364231.6A priority Critical patent/CN103433704B/en
Publication of CN103433704A publication Critical patent/CN103433704A/en
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Publication of CN103433704B publication Critical patent/CN103433704B/en

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Abstract

The present invention is a kind of precise pressure-reducing valve main valve plug, comprise valve rod, adapter sleeve and steel ball, the end turning of described valve rod has a linkage section, taper is had to accept shoulder in the napex turning of linkage section, shoulder shape step is had in the middle part turning of valve rod, on shoulder shape step, sulfuration has acrylonitrile-butadiene rubber layer, described adapter sleeve one end turning is connecting through hole, be crimped on the linkage section of valve rod by interference fit, other end turning is that end is little, section is the receiving hole of swallow-tail form, be pressed together in receiving hole by described steel ball by interference fit, described steel ball is ball bearing steel ball, the structure of this main valve plug simplifies production technology, ensure that every technical requirement of main valve plug.

Description

A kind of production technology of precise pressure-reducing valve main valve plug
Technical field
The present invention relates to a kind of structure and production technology of precise pressure-reducing valve main valve plug.
Background technology
Precise pressure-reducing valve is the pressure-reducing valve that a kind of technology content is higher, current domestic successful actually rare, its main valve plug of traditional precise pressure-reducing valve adopts overall structure, because its end sphere processing is formed by fine turning lathe turning, its fineness and concentricity requirement are very high, and simultaneously because its structure is more complicated, the sulfuric horizon of main valve plug two shoulder is also difficult to reach technical requirement, cause the passing rate of processing of main valve plug very low, become the successful key of restriction precise pressure-reducing valve.
Summary of the invention
The object of the invention is to the defect overcoming original technology, provide that a kind of structure is simple, the precise pressure-reducing valve main valve plug of handling ease and production technology.
For achieving the above object, the present invention announces a kind of precise pressure-reducing valve main valve plug and production technology, specific as follows:
A kind of precise pressure-reducing valve main valve plug, comprise valve rod, adapter sleeve and steel ball, the end turning of described valve rod has a linkage section, taper is had to accept shoulder in the top turning of linkage section, shoulder shape step is had in the middle part turning of valve rod, on shoulder shape step, sulfuration has acrylonitrile-butadiene rubber layer, described adapter sleeve one end turning is connecting through hole, be crimped on the linkage section of valve rod by interference fit, other end turning is concentric with connecting through hole, end is little, section is the receiving hole of swallow-tail form, be pressed together in receiving hole by described steel ball by interference fit, steel ball described is especially ball bearing steel ball.
The production technology of precise pressure-reducing valve main valve plug is as follows:
The first step: go out valve rod 1 and adapter sleeve 2 with brass turning by drawing and carry out chrome-faced process;
Second step: the sulfuration shoulder step 11 of valve rod 1 being carried out acrylonitrile-butadiene rubber: valve rod 1 shoulder is coated sulfuration glue and put into particular manufacturing craft and carry out sulfuration by vulcanizing press, curing temperature 180 DEG C, cure time 180s, sulfide stress 10Mpa;
3rd step: adapter sleeve is pressed into valve rod with forcing press:
1) operating air pressure having checked forcing press, the work top having cleared up forcing press, adjust the impulse stroke of forcing press, clamped the riveting head of forcing press, made it to meet technological requirement;
2) valve rod 1 after sulfuration is coated 705 glue needing the end contact face of riveted, then valve rod 1 is placed on the work bed die of lock seaming machine;
3) adapter sleeve is placed on valve stem end, starts forcing press, by riveting head by valve rod 1 and adapter sleeve 2 closely pressing;
4th step: the top with forcing press, steel ball being pressed into adapter sleeve:
1) adjust the impulse stroke of forcing press, clamped the riveting head of forcing press, made it to meet technological requirement;
2) valve rod 1 of good for pressing adapter sleeve is placed on the work bed die of lock seaming machine, steel ball 3 is placed on reposefully the top of adapter sleeve 2;
3) start forcing press, by the riveting head of forcing press, steel ball 3 is pressed on the top of adapter sleeve 2.
5th step: product is tested, meets drawing requirement.
The beneficial effect that above Structure and energy brings is: be split type by the structural design of main valve plug, the processing technology of parts is made to become simple, valve rod becomes the cylindrical shape of rule, be easy to locate sulfuration in the particular manufacturing craft of sulfuration, to be difficult to process main valve plug spherical modification be the ball bearing steel ball being easy to buy in city, like this, improve the passing rate of processing of precise pressure-reducing valve main valve plug, make the quality index of primary spools be improved simultaneously.
Accompanying drawing explanation
Fig. 1 is traditional precise pressure-reducing valve main valve plug structure chart.
Fig. 2 is precise pressure-reducing valve main valve plug structure chart of the present invention.
Fig. 3 is precise pressure-reducing valve main valve plug Split type structure figure of the present invention.
Detailed description of the invention
The main valve plug structure of traditional precise pressure-reducing valve is shown in Fig. 1; it adopts monolithic construction; SR3 sphere is generally processed by fine turning lathe; precision and nonconcentricity require very high; simultaneously because overall structure is more complicated; for the sulfuration of its shoulder brings difficulty, therefore this main valve plug qualification rate is lower, is difficult to accomplish scale production.
The main valve plug structure of precise pressure-reducing valve of the present invention is shown in Fig. 2, Fig. 3, comprise valve rod 1, adapter sleeve 2, steel ball 3, the end turning of described valve rod has a linkage section 12, taper is had to accept shoulder 13 in the top turning of linkage section, shoulder shape step 11 is had in the middle part turning of valve rod, on shoulder shape step, sulfuration has acrylonitrile-butadiene rubber layer 14, described adapter sleeve 2 one end turning is connecting through hole 21, be crimped on the linkage section 12 of valve rod by interference fit, other end turning is that end is little, section is the receiving hole 22 of swallow-tail form, be pressed together in receiving hole 22 by described steel ball 3 by interference fit, described steel ball is the ball bearing steel ball meeting national standard, the surface accuracy of this steel ball, the technical indicator such as nonconcentricity and hardness all meets the technical requirement of main valve plug, be easy to buy from the market.
The production technology of precise pressure-reducing valve main valve plug of the present invention is as follows:
The first step: go out valve rod 1 and adapter sleeve 2 with the turning by drawing of H59 brass and carry out chrome-faced process;
Second step: the sulfuration middle part of valve rod 1 shoulder shape step 11 being carried out acrylonitrile-butadiene rubber: after the shoulder shape step 11 of valve rod 1 is coated sulfuration glue, perpendicular fastener carries out sulfuration by vulcanizing press in dedicated vulcanization mould, curing temperature 180 DEG C, cure time 180s, sulfide stress 10Mpa;
3rd step: adapter sleeve 2 is pressed into valve rod 1 by forcing press:
1) operating air pressure having checked forcing press, the work top having cleared up forcing press, adjust the impulse stroke of forcing press, load onto riveting head, make it to meet technological requirement;
2) valve rod 1 after sulfuration is coated 705 glue at the contact surface of linkage section 12, then valve rod 1 is vertically fixed on the work bed die of forcing press;
3) connecting through hole 21 of adapter sleeve 2 is held level with both hands the taper being placed on valve rod quietly to accept on shoulder 13, start forcing press, by riveting head, adapter sleeve 2 interference fit is crimped on the linkage section 12 of valve rod;
4th step: steel ball 3 is pressed in the receiving hole 22 of adapter sleeve by forcing press:
1) adjust the impulse stroke of forcing press, load onto riveting head, make it to meet technological requirement;
2) valve rod 1 having crimped adapter sleeve 2 is vertically fixed on the work bed die of forcing press, steel ball 3 is placed on reposefully in the receiving hole 22 of adapter sleeve 2;
3) start forcing press, by riveting head, steel ball 3 is pressed together in the receiving hole 22 of adapter sleeve 2 by interference fit.
5th step: product is tested, meets drawing requirement.

Claims (1)

1. a production technology for precise pressure-reducing valve main valve plug, its method is as follows:
The first step: go out valve rod and adapter sleeve with brass turning by drawing and carry out chrome-faced process;
Second step: the sulfuration middle part of valve rod shoulder shape step being carried out acrylonitrile-butadiene rubber: after the shoulder shape step of valve rod is coated sulfuration glue, perpendicular fastener carries out sulfuration by vulcanizing press in dedicated vulcanization mould, curing temperature 150 ~ 180 DEG C, cure time 160 ~ 180s, sulfide stress 6 ~ 10Mpa;
3rd step: adapter sleeve is pressed into valve rod by forcing press:
1) operating air pressure having checked forcing press, the work top having cleared up forcing press, adjust the impulse stroke of forcing press, load onto riveting head, make it to meet technological requirement;
2) contact surface of the valve rod after sulfuration at linkage section is applied glue, then valve rod is vertically fixed on the work bed die of forcing press;
3) connecting through hole of adapter sleeve is held level with both hands the taper being placed on valve rod quietly to accept on shoulder, start forcing press, by riveting head, adapter sleeve interference fit is crimped on the linkage section of valve rod;
4th step: steel ball is pressed in the receiving hole of adapter sleeve by forcing press:
1) adjust the impulse stroke of forcing press, load onto riveting head, make it to meet technological requirement;
2) valve rod having crimped adapter sleeve is vertically fixed on the work bed die of forcing press, steel ball is placed in the receiving hole of adapter sleeve reposefully;
3) start forcing press, by riveting head, steel ball is pressed together in the receiving hole of adapter sleeve by interference fit;
5th step: product is tested, meets drawing requirement.
CN201310364231.6A 2013-08-16 2013-08-16 A kind of production technology of precise pressure-reducing valve main valve plug CN103433704B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310364231.6A CN103433704B (en) 2013-08-16 2013-08-16 A kind of production technology of precise pressure-reducing valve main valve plug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310364231.6A CN103433704B (en) 2013-08-16 2013-08-16 A kind of production technology of precise pressure-reducing valve main valve plug

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CN103433704A CN103433704A (en) 2013-12-11
CN103433704B true CN103433704B (en) 2016-02-24

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104057977A (en) * 2014-06-13 2014-09-24 哈尔滨市特多佳调速技术开发中心 Critical speed gearing mechanism for retarder
CN105114673B (en) * 2015-08-20 2017-11-14 宁波市华益气动工程有限公司 A kind of precise pressure-reducing valve
CN106369182A (en) * 2015-11-04 2017-02-01 衡阳中地装备探矿工程机械有限公司 Integral ball valve guide sleeve and machining method thereof
CN105537885A (en) * 2016-03-03 2016-05-04 布志刚 Machining method of valve element
CN106015650A (en) * 2016-07-13 2016-10-12 成都安程通科技有限公司 Natural gas reducing valve
CN106112469B (en) * 2016-08-20 2018-09-04 无锡鹰贝精密轴承有限公司 Spool steel ball assembles and closing device
CN106112441B (en) * 2016-08-20 2018-07-24 无锡鹰贝精密轴承有限公司 Spool steel ball assembly technology

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2827271A1 (en) * 1977-06-22 1979-01-18 Honda Motor Co Ltd MANUFACTURING PROCESS FOR WELDED VALVE CONES
CA2193589A1 (en) * 1995-12-25 1997-06-26 Tomohiro Ono Method of manufacturing pressure regulator
CN200986030Y (en) * 2006-12-04 2007-12-05 江苏苏盐阀门机械有限公司 Floating ball type lines sealing globe valve
CN101992388A (en) * 2010-10-28 2011-03-30 天津悦华工贸有限公司 Method for installing plunger piston and valve rod of stop valve
CN201925552U (en) * 2011-03-17 2011-08-10 浙江百灵气动科技有限公司 Reducing valve

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2827271A1 (en) * 1977-06-22 1979-01-18 Honda Motor Co Ltd MANUFACTURING PROCESS FOR WELDED VALVE CONES
CA2193589A1 (en) * 1995-12-25 1997-06-26 Tomohiro Ono Method of manufacturing pressure regulator
CN200986030Y (en) * 2006-12-04 2007-12-05 江苏苏盐阀门机械有限公司 Floating ball type lines sealing globe valve
CN101992388A (en) * 2010-10-28 2011-03-30 天津悦华工贸有限公司 Method for installing plunger piston and valve rod of stop valve
CN201925552U (en) * 2011-03-17 2011-08-10 浙江百灵气动科技有限公司 Reducing valve

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Address after: 325604 Yueqing Economic Development Zone, Zhejiang, No. eight, No. Road, No. 387

Patentee after: Braun Pneumatic Technology Co., Ltd.

Address before: 325604 Yueqing Economic Development Zone, Zhejiang, No. eight, No. Road, No. 387

Patentee before: Zhejiang BLCH Pneumatic Science & Technology Co., Ltd.

CP01 Change in the name or title of a patent holder