CN104676025A - Highly sealed needle valve - Google Patents
Highly sealed needle valve Download PDFInfo
- Publication number
- CN104676025A CN104676025A CN201310653630.4A CN201310653630A CN104676025A CN 104676025 A CN104676025 A CN 104676025A CN 201310653630 A CN201310653630 A CN 201310653630A CN 104676025 A CN104676025 A CN 104676025A
- Authority
- CN
- China
- Prior art keywords
- valve
- control hole
- hole
- valve body
- funnel
- 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
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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/42—Valve seats
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
A highly sealed needle valve comprises a valve body, an upper valve cover, a valve rod, a handle, a sealing ring and a baffle ring; the valve body is provided with an air inlet hole, an air outlet hole and a control hole; the interior of the control hole is provided with steps which are matched with the end surface of the valve rod to block the control hole. The highly sealed needle valve is characterized in that the steps of the control hole are provided with a thin wall funnel-shaped metal gasket; the funnel-shaped metal gasket is made of metal which is good in ductility; the metal which is soft and easy to deform comprises pure copper, lead and the like; at least one end of the upper end and the lower end of the funnel-shaped metal gasket is fixed on the valve body wall.
Description
Technical field:
The present invention relates to valve manufacture field, especially a kind of needle type valve of high-seal.
Background technique
Needle type valve has high pressure resistant, compact structure, long service life advantage, it is valve conventional in industrial production, its sealing principle relies on the conical surface of valve rod and the taper fit of valve seat to realize switch, this just requires that valve rod conical surface is consistent with valve seat conical surface shape height, could realize sealing like this.Valve seat is divided into hard seat and soft seat two kinds.Hard seat is that employing is metal, and soft seat is that organic synthesis and nylon etc. are made.Hard seat valve seat high temperature high voltage resistant, but poor sealing, soft seat valve seat good airproof performance, but withstand voltage high temperature resistant difference.
Summary of the invention
The invention provides the needle type valve of a kind of good seal performance, high temperature high voltage resistant, long service life, to overcome the defect that existing soft seat hard seat needle type valve exists.
Technological scheme of the present invention is: a kind of needle type valve of high-seal, comprise valve body, bonnet, valve rod, handle, seal ring, back-up ring, valve body there are inlet hole, air outlet hole and control hole, have in control hole and coordinate with valve rod end face the step blocked by control hole, it is characterized in that: control hole step has a thin-walled funnel-shaped metal packing ring.
The needle type valve of above-mentioned high-seal, is characterized in that: funnel form metal washer makes with the metal with good ductility.The soft yielding metal such as fine copper, lead such as can be adopted to make, use the thin-wall metal packing ring that this metalloid is made, easily deformable under the conical surface extruding of valve stem top, so just can fill up the small spaces between valve rod conical surface and base reliably.
The needle type valve of above-mentioned high-seal, is characterized in that: in the upper and lower end of funnel form metal washer, at least one end is fixed on valve body wall.The object done like this is that funnel form metal washer can be fixed on valve body wall and can not rotate with valve rod, and metal washer is formed with valve rod conical surface after the powerful extruding of valve rod first time and closely cooperates elsewhere, formation reliable sealing.
Usefulness of the present invention is effectively to improve the sealing, wear-resisting withstand voltage of needle type valve, and be also applicable to vacuum seal, stable performance, the life-span is long.
Accompanying drawing explanation
Fig. 1 is the needle type valve structural representation of high-seal of the present invention
Fig. 2 is the partial enlarged drawing that valve rod and metal washer coordinate
1-valve body, 2-inlet hole, 3-air outlet hole, 4-control hole, 5-valve rod, 6-step, 7-funnel form metal washer, 8-compress gasket, 9-gasket seal, 10-bonnet 11---handle 12---soldering point
Embodiment
As shown in Figure 1, this is the needle type valve schematic diagram of high-seal of the present invention, and by valve body 1, bonnet 10, valve rod 5, compress gasket 8, gasket seal 9, handle 11 form.Valve body there are inlet hole 2, air outlet hole 3, control hole 4, control hole there is step 6, funnel form metallic shim 7 is had between step 6 and the termination of valve rod 5, metallic shim 7 is made up of fine copper, wall thickness 0.15 millimeter, valve body and valve rod are made up of stainless steel, below and the control hole circular hole wall of copper metallic shim 7 weld together, such metallic shim 7 can not rotate along with the rotation of valve rod 5, certainly also can being welded on the wall of control hole 4 above metallic shim, welding manner can spot welding also can full weld.Valve stem tip can scholar conical, also can be hemispheric.
Claims (3)
1. the needle type valve of a high-seal, comprise valve body, bonnet, valve rod, handle, seal ring, back-up ring, valve body there are inlet hole, air outlet hole and control hole, have in control hole and coordinate with valve rod end face the step blocked by control hole, it is characterized in that: control hole step has a thin-walled funnel-shaped metal packing ring.
2. the needle type valve of high-seal according to claim 1, is characterized in that: funnel form metal washer makes with the metal with good ductility.
3. the needle type valve of high-seal according to claim 1, is characterized in that: in the upper and lower end of funnel form metal washer, at least one end is fixed on valve body wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310653630.4A CN104676025A (en) | 2013-12-03 | 2013-12-03 | Highly sealed needle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310653630.4A CN104676025A (en) | 2013-12-03 | 2013-12-03 | Highly sealed needle valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104676025A true CN104676025A (en) | 2015-06-03 |
Family
ID=53311452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310653630.4A Pending CN104676025A (en) | 2013-12-03 | 2013-12-03 | Highly sealed needle valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104676025A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4441689A (en) * | 1981-12-10 | 1984-04-10 | Tomozo Kato | Bonnetless compact design globe valve |
| CN1952455A (en) * | 2006-11-10 | 2007-04-25 | 金进星 | Flexible hard seat needle type valve with O-shape ring |
| CN201145049Y (en) * | 2007-12-11 | 2008-11-05 | 金进星 | Needle valve sealing structure |
| CN102109053A (en) * | 2011-04-02 | 2011-06-29 | 西安长庆科技工程有限责任公司 | Low-pressure control drain system |
| CN201963894U (en) * | 2011-01-04 | 2011-09-07 | 凯迈（洛阳）气源有限公司 | High-temperature, high-pressure and high-flow needle valve |
-
2013
- 2013-12-03 CN CN201310653630.4A patent/CN104676025A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4441689A (en) * | 1981-12-10 | 1984-04-10 | Tomozo Kato | Bonnetless compact design globe valve |
| CN1952455A (en) * | 2006-11-10 | 2007-04-25 | 金进星 | Flexible hard seat needle type valve with O-shape ring |
| CN201145049Y (en) * | 2007-12-11 | 2008-11-05 | 金进星 | Needle valve sealing structure |
| CN201963894U (en) * | 2011-01-04 | 2011-09-07 | 凯迈（洛阳）气源有限公司 | High-temperature, high-pressure and high-flow needle valve |
| CN102109053A (en) * | 2011-04-02 | 2011-06-29 | 西安长庆科技工程有限责任公司 | Low-pressure control drain system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150603 |