CN103234052A - Two-position two-way switching valve - Google Patents
Two-position two-way switching valve Download PDFInfo
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- CN103234052A CN103234052A CN2013101517966A CN201310151796A CN103234052A CN 103234052 A CN103234052 A CN 103234052A CN 2013101517966 A CN2013101517966 A CN 2013101517966A CN 201310151796 A CN201310151796 A CN 201310151796A CN 103234052 A CN103234052 A CN 103234052A
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Abstract
The invention belongs to the technical field of steel rolling heating furnaces, and relates to a switching valve arranged in a gas system of a steel rolling heating furnace, in particular to a two-position two-way switching valve which comprises a valve body. A partition plate is arranged in an inner cavity of the valve body, a valve seat is fixedly arranged on the upper end face of the partition plate and corresponds to a valve port, a cylinder is mounted at the top of the valve body, a push rod of the cylinder extends into the inner cavity of the valve body, and a valve plate matched with the valve seat is fixedly arranged at the end of the push rod. By the aid of flat sealing technology, the two-position two-way switching valve is driven by a straight stroke cylinder, is simple in structure and has fewer moving parts, the valve plate and a sealing ring are in hard contact and flexible seal, and relative friction is omitted, so that the valve has the advantages of sealing reliability, short action time, leak tightness, long operating life and the like.
Description
Technical field
The invention belongs to the steel rolling heating furnace technical field, relate to the switching valve that disposes in the steel rolling heating furnace coal gas system, specifically a kind of bi-bit bi-pass switching valve.
Background technique
At present, China's steel rolling heating furnace generally adopts maturation, advanced person's regenerative combustion technology.The air single regenerative mode is also adopted in high-energy fuel burnings, and coal gas system need dispose that the coal gas that matches with air reversing valve " leads to ", " breaking " switching valve in its reversing mechanism.Switching valve is because acting frequently, and reason such as dust loading height is updated, upgraded in the medium.
In prior art, the common valve that coal gas " leads to ", " breaking " switches that is used for mainly contains back seat type switching valve and eccentric sealed type switching valve.Fig. 1 ~ 3rd, basic principle and the seal form of back seat type switching valve as can be seen from the figure are to realize medium-tight under " breaking " state by Sealing shield ring, this structure leakage rate is big.Fig. 4 ~ 6th, the basic principle of eccentric sealed type switching valve and seal form, this structure seals to realize cutting off seal by off-centre or multi-eccentric level, causes the easy jam of valve, the state switch motion time is long simultaneously.There is following shortcoming simultaneously in above-mentioned two kinds of existing switching valves: (1) is long actuation time, and sealing surface, rotatingshaft exist wearing and tearing, inapplicable frequent movement occasion.When (2) mangetic core assembly breaks down, need valve body is removed back maintenance or replacing from pipeline.Jam easily takes place when (3) in the medium rubbish being arranged, and meets medium rotatingshaft and the easier expanded by heating of valve plate and stuck when temperature is arranged.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of bi-bit bi-pass switching valve simple in structure, ingenious, rational is provided, the sealing valve adopts the plane sealing technology, and is by the straight journey air cylinder driven, simple in structure, movement parts is few.
According to technological scheme provided by the invention: a kind of bi-bit bi-pass switching valve, comprise valve body, be characterised in that: in the described body cavity dividing plate is set, offers valve port on the dividing plate, valve port top correspondence is provided with valve seat; The valve body top arranges cylinder, and the push rod of described cylinder stretches in the body cavity, and the push rod end is set with the valve plate that matches with valve seat, and is set with seal ring in the valve plate lower end surface.
As a further improvement on the present invention, described valve seat has boss, and described boss places the seal ring inboard when switching valve is in dissengaged positions.
As a further improvement on the present invention, described valve body top also is provided with suction port, valve body bottom and the coaxial gas port that sets out of suction port.
The present invention compared with prior art, advantage is: bi-bit bi-pass switching valve of the present invention adopts the plane sealing technology, simple in structure, movement parts is few by the straight journey air cylinder driven, valve plate adopts hard contact, soft seal, no relative the friction with seal ring.So this valve has advantages such as sealing is reliable, actuation time is short, nothing leakage, long working life.
Description of drawings
Fig. 1 ~ 3 are back seat type switching valve principle and seal form schematic representation.
Fig. 4 ~ 6 are eccentric sealed type switching valve principle and seal form schematic representation.
Fig. 7 ~ 9 are the principle of the invention and sealing schematic representation.
Embodiment
The invention will be further described below in conjunction with concrete drawings and Examples.
Shown in Fig. 7 ~ 9, cylinder 1, valve body 2, valve plate 3, seal ring 4, dividing plate 5, valve seat 6, valve port 7, push rod 8, suction port 9, air outlet 10, boss 11 etc.
Bi-bit bi-pass switching valve of the present invention comprises valve body 2 shown in Fig. 7 ~ 9, in described valve body 2 inner chambers dividing plate 5 is set, and offers valve port 7 on the dividing plate 5, and valve port 7 top correspondences are provided with valve seat 6; Valve body 2 tops arrange cylinder 1, and the push rod 8 of described cylinder 1 stretches in valve body 2 inner chambers, and push rod 8 ends are set with the valve plate 3 that matches with valve seat 6, and are set with seal ring 4 in valve plate 3 lower end surfaces.
Working principle of the present invention is as follows: it is straight journey that the present invention seals manner of execution, and the stroke weak point can be realized simply, switching fast.Employing arranges the plane sealing form of seal ring 4 at valve plate 3 lower surfaces, there are not wearing and tearing, zero leakage, long service life, and adopt " hard contact, soft seal ", see shown in Fig. 8,9, when the bi-bit bi-pass switching valve is in " cut-out " state, valve plate 3 is pressed on valve seat 6 boss 11, is " hard contact " that seal ring 4 is pressed in valve seat 6 boss 11 belows, be " soft seal " that above-mentioned sealing means can guarantee that seal ring 4 is operated in regime of elastic deformation.In addition, cylinder 1 is provided with can regulate damping, guarantees steadily slowly to compress after valve plate 3 arrives fast.Eliminate the potential risk that is knocked damage of seal ring 4.
Air inlet/outlet of the present invention adopts unique height to advance, hang down structural design, in the time of in off position, can effectively utilize circulation medium pressure to compress valve plate 3.
Mangetic core assembly is cylinder 1, valve plate 3, seal ring 4 and since cylinder 1 by mounting plate by bolton in valve body 2 tops, so mangetic core assembly can overall pulling down, repair the back integral installation, pipeline does not need to do any change in the maintenance process.Even rubbish is arranged in the circulation medium, also be difficult for piling up.
When circulation medium had temperature, valve plate 3 expanded and does not influence valve event and sealability.
Claims (3)
1. a bi-bit bi-pass switching valve comprises valve body (2), it is characterized in that: in described valve body (2) inner chamber dividing plate (5) is set, offers valve port (7) on the dividing plate (5), valve port (7) top correspondence is provided with valve seat (6); Valve body (2) top arranges cylinder (1), the push rod (8) of described cylinder (1) stretches in valve body (4) inner chamber, push rod (8) end is set with the valve plate (3) that matches with valve seat (6), and is set with seal ring (4) in valve plate (3) lower end surface.
2. bi-bit bi-pass switching valve as claimed in claim 1, it is characterized in that: described valve seat (6) has boss (11), and described boss (11) places seal ring (4) inboard when switching valve is in dissengaged positions.
3. bi-bit bi-pass switching valve as claimed in claim 1, it is characterized in that: described valve body (2) top also is provided with suction port (9), valve body (2) bottom and the coaxial gas port (10) that sets out of suction port (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101517966A CN103234052A (en) | 2013-04-26 | 2013-04-26 | Two-position two-way switching valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101517966A CN103234052A (en) | 2013-04-26 | 2013-04-26 | Two-position two-way switching valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103234052A true CN103234052A (en) | 2013-08-07 |
Family
ID=48882104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013101517966A Pending CN103234052A (en) | 2013-04-26 | 2013-04-26 | Two-position two-way switching valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103234052A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112762201A (en) * | 2021-01-27 | 2021-05-07 | 福建龙净环保股份有限公司 | Heat accumulating type thermal oxidation furnace and sealing method thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201202859Y (en) * | 2008-05-08 | 2009-03-04 | 王元清 | Main valve seal structure of high pressure leading safety valve |
| CN201322102Y (en) * | 2008-11-21 | 2009-10-07 | 北京赛能杰高新技术股份有限公司 | On-off two-way change-over valve |
| CN101625035A (en) * | 2008-07-08 | 2010-01-13 | 任史勃 | Valve flap of stop valve |
| CN201916544U (en) * | 2011-01-14 | 2011-08-03 | 北京安信中元科技发展有限公司 | Stop valve for rapidly switching heat accumulating type industrial furnace fuel gas and fume |
| CN201973335U (en) * | 2011-03-28 | 2011-09-14 | 江苏大信环境科技有限公司 | Switch control device and three-way valve using the same |
| CN201973261U (en) * | 2010-12-14 | 2011-09-14 | 江苏江华阀业有限公司 | Dual-soft seal quickly closed valve |
| CN202418774U (en) * | 2011-12-23 | 2012-09-05 | 武汉钢铁(集团)公司 | Pressure relief control valve for dusty gas |
| CN202719144U (en) * | 2012-06-28 | 2013-02-06 | 长沙有色冶金设计研究院有限公司 | Ore pulp flow adjusting valve |
| CN203239943U (en) * | 2013-04-26 | 2013-10-16 | 无锡龙山科技有限公司 | Two-position two-way switching valve |
-
2013
- 2013-04-26 CN CN2013101517966A patent/CN103234052A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201202859Y (en) * | 2008-05-08 | 2009-03-04 | 王元清 | Main valve seal structure of high pressure leading safety valve |
| CN101625035A (en) * | 2008-07-08 | 2010-01-13 | 任史勃 | Valve flap of stop valve |
| CN201322102Y (en) * | 2008-11-21 | 2009-10-07 | 北京赛能杰高新技术股份有限公司 | On-off two-way change-over valve |
| CN201973261U (en) * | 2010-12-14 | 2011-09-14 | 江苏江华阀业有限公司 | Dual-soft seal quickly closed valve |
| CN201916544U (en) * | 2011-01-14 | 2011-08-03 | 北京安信中元科技发展有限公司 | Stop valve for rapidly switching heat accumulating type industrial furnace fuel gas and fume |
| CN201973335U (en) * | 2011-03-28 | 2011-09-14 | 江苏大信环境科技有限公司 | Switch control device and three-way valve using the same |
| CN202418774U (en) * | 2011-12-23 | 2012-09-05 | 武汉钢铁(集团)公司 | Pressure relief control valve for dusty gas |
| CN202719144U (en) * | 2012-06-28 | 2013-02-06 | 长沙有色冶金设计研究院有限公司 | Ore pulp flow adjusting valve |
| CN203239943U (en) * | 2013-04-26 | 2013-10-16 | 无锡龙山科技有限公司 | Two-position two-way switching valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112762201A (en) * | 2021-01-27 | 2021-05-07 | 福建龙净环保股份有限公司 | Heat accumulating type thermal oxidation furnace and sealing method thereof |
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Application publication date: 20130807 |