CN88200110U - Pilot bellows type relief valve - Google Patents
Pilot bellows type relief valve Download PDFInfo
- Publication number
- CN88200110U CN88200110U CN 88200110 CN88200110U CN88200110U CN 88200110 U CN88200110 U CN 88200110U CN 88200110 CN88200110 CN 88200110 CN 88200110 U CN88200110 U CN 88200110U CN 88200110 U CN88200110 U CN 88200110U
- Authority
- CN
- China
- Prior art keywords
- valve
- bellows
- pilot
- type relief
- relief valve
- 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 - Lifetime
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- Control Of Fluid Pressure (AREA)
Abstract
The utility model discloses a pilot bellows type relief valve, which is mainly used on the steam or air pipelines of the industries of petroleum, chemical engineering, metallurgy, textile, city building, food, etc. The pilot bellows type relief valve is the improvement of a pilot piston type relief valve and is mainly characterized in that the piston component of the pilot piston type relief valve is replaced by a bellows component, and the inlet of a valve body is provided with a filter which is convenient for the assembly and disassembly. The pilot bellows type relief valve has the advantages of strong anti-pollution ability, no block, sensitive regulation, high precision, simple structure, low cost and good succession. Manufacturers producing the pilot piston type relief valves only need to add the production apparatuses of the bellows components.
Description
The utility model relates to a kind of reduction valve.This valve is used for the steam or the air conduit of industry such as oil, chemical industry, metallurgy, weaving, printing and dyeing, urban construction and food, the pressure medium of this valve of flowing through is reduced to setting, and by the energy of medium self its pressure divergence is controlled in the predetermined range.Therefore it also is a kind of self-powering type pressure regulator.
Usually, the self-powering type pressure regulator that adopts on the industrial pipeline have direct effect Diaphragm reducing valve, directly apply piston formula reduction valve, directly act on Bellows reducing valve, guided piston type reduction valve and guide's Diaphragm reducing valve etc.For the guided piston type reduction valve of low pressure small-bore pipeline extensive use, because the requirement on machining accuracy height of piston assembly, this is the cost height not only, and piston assembly is easy to wear, clamping stagnation, and contamination resistance is poor, thereby easily cause regulating poor sensitivity, reduce pressure ineffective and even do not reduce pressure.
The utility model is to the improvement of guided piston type reduction valve and development, and purpose is to provide a kind of contamination resistance strong, can jam, regulate sensitive, decompression precision height, simple in structure, lower-cost a kind of novel reduction valve.Because it has inherited manufacturing mechanism, technology and the experience of most spare parts of guided piston type reduction valve, so producer of every production guided piston type reduction valve, only need increase the manufacturing mechanism of bellows component, needn't set up production line again and just can organize production in enormous quantities rapidly.
The utility model is achieved in that general guided piston type reduction valve is by valve body, valve gap, main spring, main valve clack, main valve seat, driving element--piston assembly, pilot valve, guide valve seat, Regulation spring, adjusting screw, compositions such as diaphragm.This valve only needs to change the driving element piston assembly into bellows component and gets final product, and for further improving contamination resistance, is provided with filter in the valve body ingress.
Concrete structure of the present utility model and working condition are provided by following drawings and Examples.
Fig. 1 is the structural representation of guide's Bellows reducing valve.
Fig. 2 is guide's Bellows reducing valve bellows component structural representation.
Fig. 3 is guide's Bellows reducing valve filter structure schematic representation.
With reference to accompanying drawing 1, this reduction valve is mainly by valve body (4), valve gap (2,17), main spring (5), filter (6), main valve clack (7), main valve seat (9), main valve nut (10), bellows component (11), pilot valve spring (14), pilot valve (15), guide valve seat (16), spring shield (18), adjusting screw (19), dish (21) on the spring, Regulation spring (22), spring lower wall (23), packing ring (24), diaphragm (25), pad (3,8,12), locating stud (13), protective housing (20), plug screw compositions such as (1).
With reference to accompanying drawing 2, bellows component (11) is by last dish (31), interior ring (32), and bellows (33), lower wall (34) and outer shroud (35) are welded.
With reference to accompanying drawing 3, filter (6) is mainly by housing (36), and filter screen (37) is formed, and the two is tied up by steel wire (38) and is fixed, and this is not only simple in structure, and it is low to be convenient to mounting or dismounting, maintenance, cost.
The working principle of the utility model guide Bellows reducing valve is as follows: when Regulation spring (22) when being in free state, main valve and pilot valve are closed, and reduction valve is in off working state.Turn adjusting screw (19), compression adjustment spring (22), so the pressure of Regulation spring is driven diaphragm (25) just, promote pilot valve (15) to overcome the pressure medium of the pressure of pilot valve spring (14) and pilot valve inlet and open, meanwhile, medium is flowed through by valve inlet passage a and is entered the b chamber after the pilot valve decompression, is divided into two-way then: one road flow through diaphragm (25) c chamber, below and flow valves outlet plenum d; The path of another road on bonnet (1-7) enters the inner chamber of bellows component (11), and an aperture e who passes on the bellows component lower wall (34) flows to outlet plenum.Because the effective active area of bellows is more many greatly than the pressure active area of main valve clack, bellows component (11) promotes main valve clack (7) and overcomes main spring (5) power and valve inlet pressure medium and open under the effect of inside and outside differential pressure, so the extensive work medium by the outlet of decompression back, the unlatching slit between main valve clack (7) and main valve seat (9) flow valves, also enters the below inner chamber c of diaphragm (25) simultaneously.Outlet pressure rises to desired numerical value gradually, and the power of the responsive moving system of reduction valve is in state of equilibrium.If outlet pressure increases, originally state of equilibrium is destroyed, the pressure medium of diaphragm (25) below is greater than the pressure of Regulation spring (22), so diaphragm (25) just moves upward, pilot valve (15) moves to closing direction, the medium that flows into bellows component (11) inner chamber is reduced, the bellows chamber pressure also descends thereupon, cause that main valve clack (7) moves to closing direction, so main valve clack (7) aperture reduces, the medium of main valve of flowing through just reduces, and outlet pressure also just descends thereupon, to reach new balance.Vice versa.Like this, guide's Bellows reducing valve just can reduce to inlet pressure the outlet pressure of a certain needs by adjusting.When inlet pressure and flow changed within the specific limits, nationality helped the energy of medium itself, just can keep outlet pressure within the specific limits automatically.
This pilot bellows type relief valve has following advantage:
1, stain resistance is strong, can jam.
2, regulate sensitivity, decompression precision height.
3, inheritance is good, and is simple in structure, and cost is low.
Claims (3)
1, a kind of guide's Bellows reducing valve is mainly by valve body (4), valve gap (2,17), main spring (5), main valve clack (7), main valve seat (9), main valve nut (10), driving element, pilot valve spring (14), pilot valve (15), guide valve seat (16), adjusting screw (19), dish (21) on the spring, spring lower wall (23), Regulation spring (22), packing ring (24), diaphragm (25), pad (3,8,12), locating stud (13), protective housing (20), plug screw compositions such as (1), the driving element that is characterised in that of the present utility model is bellows component (11), and in valve body (4) ingress filter (6) is housed.
2, guide's Bellows reducing valve according to claim 1, its bellows component (11) are characterised in that it is by last dish (31), interior ring (32), and bellows (33), lower wall (34) and outer shroud (35) are welded.
3, guide's Bellows reducing valve according to claim 1 and 2, its filter (6) are characterised in that it has housing (36), filter screen (37), and both tie up with steel wire (38) and form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88200110 CN88200110U (en) | 1988-01-15 | 1988-01-15 | Pilot bellows type relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88200110 CN88200110U (en) | 1988-01-15 | 1988-01-15 | Pilot bellows type relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN88200110U true CN88200110U (en) | 1988-10-19 |
Family
ID=4835599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88200110 Expired - Lifetime CN88200110U (en) | 1988-01-15 | 1988-01-15 | Pilot bellows type relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN88200110U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101000113B (en) * | 2006-12-01 | 2010-11-03 | 华中科技大学 | Middle and high pressure guiding type water pressure reducing valve |
| CN101886710A (en) * | 2009-05-13 | 2010-11-17 | 沛尔兹工程有限公司 | Apparatus and method for mechanically reducing internal pressure of column in refinery or petrochemical process |
| CN101943202A (en) * | 2010-08-22 | 2011-01-12 | 林友根 | Link bolt with pilot type reducing valve |
| CN104048085A (en) * | 2013-12-27 | 2014-09-17 | 李潘宝 | Pilot-operated type pressure regulation valve |
| CN106286917A (en) * | 2016-09-21 | 2017-01-04 | 江苏龙力神精工科技有限公司 | Relief valve |
-
1988
- 1988-01-15 CN CN 88200110 patent/CN88200110U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101000113B (en) * | 2006-12-01 | 2010-11-03 | 华中科技大学 | Middle and high pressure guiding type water pressure reducing valve |
| CN101886710A (en) * | 2009-05-13 | 2010-11-17 | 沛尔兹工程有限公司 | Apparatus and method for mechanically reducing internal pressure of column in refinery or petrochemical process |
| CN101943202A (en) * | 2010-08-22 | 2011-01-12 | 林友根 | Link bolt with pilot type reducing valve |
| CN101943202B (en) * | 2010-08-22 | 2012-03-14 | 林友根 | Link bolt with pilot type reducing valve |
| CN104048085A (en) * | 2013-12-27 | 2014-09-17 | 李潘宝 | Pilot-operated type pressure regulation valve |
| CN104048085B (en) * | 2013-12-27 | 2016-08-03 | 李潘宝 | A kind of pilot-operated type pressure regulator valve |
| CN106286917A (en) * | 2016-09-21 | 2017-01-04 | 江苏龙力神精工科技有限公司 | Relief valve |
| CN106286917B (en) * | 2016-09-21 | 2019-03-19 | 江苏龙力神精工科技有限公司 | Safety valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |