CN201149097Y - Dustproof needle valve - Google Patents
Dustproof needle valve Download PDFInfo
- Publication number
- CN201149097Y CN201149097Y CNU200720302888XU CN200720302888U CN201149097Y CN 201149097 Y CN201149097 Y CN 201149097Y CN U200720302888X U CNU200720302888X U CN U200720302888XU CN 200720302888 U CN200720302888 U CN 200720302888U CN 201149097 Y CN201149097 Y CN 201149097Y
- Authority
- CN
- China
- Prior art keywords
- valve
- dust
- valve rod
- needle
- round handle
- 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
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- Lift Valve (AREA)
Abstract
An anti-dust needle valve comprises a valve rod and an upper valve cover, a round handle is fixedly arranged on the valve rod, the lower end of the round handle is sleeved at the upper part of the valve cover and movably matched with the upper valve cover, when the valve is opened or closed, the lower end of the round handle can not exceed the top end of the upper valve cover all the time. The usage of the structure can utilize the original round handle of the needle valve to directly prevent dust from entering a valve rod thread system, thus preventing the dust from damaging and wearing the lubrication of the valve rod and further improving the sealing effect; furthermore, no other parts are needed, and the structure is simple.
Description
Technical field
The utility model relates to a kind of needle-valve, relates in particular to the improvement of its dustproof construction.
Background technique
Existing needle-valve enters the threaded stem system for preventing dust, and dust cover is set on bonnet.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of dust cover that need not be provided with can prevent that also dust from entering the needle-valve of threaded stem system.
The technical solution that the utility model adopted is: a kind of dustproof needle-valve, comprise valve rod, bonnet, be fixed with round handgrip on the described valve rod, the lower end of circle handgrip is enclosed within the top of valve gap, and be movable with bonnet and cooperate, during valve opening and closing, circle handgrip lower end is no more than the top of bonnet all the time.
Adopt said structure, can utilize the intrinsic bundle of circles hand of needle-valve to prevent that directly dust from entering the threaded stem system, thereby prevent that dust from destroying the lubricated and wearing and tearing of valve rod, further improve sealing effect, and need not add other parts, simple in structure.
The utility model is described in further detail below in conjunction with drawings and Examples.
Description of drawings
Accompanying drawing is the overall structure schematic representation of the dustproof needle-valve of a kind of embodiment of the utility model.
Embodiment
Embodiment as shown in drawings, the utility model needle-valve that prevents dust, comprise valve body 5, valve rod 3, bonnet 4, circle handgrip 1 is fixed on the valve rod 3 by jackscrew 2, and the lower end of circle handgrip 1 is enclosed within the top of bonnet 4, bonnet 4 tops are wrapped up, and be movable with bonnet 4 and cooperate, during valve opening and closing, justify the top that handgrip 1 lower end is no more than bonnet 4 all the time, make dust can not enter the threaded stem system, thereby prevent that dust from destroying the lubricated and wearing and tearing of valve rod.
Claims (1)
- A kind of dustproof needle-valve comprises valve rod (3), bonnet (4), it is characterized in that being fixed with on the described valve rod (3) round handgrip (1), and the lower end of circle handgrip (1) is enclosed within the top of bonnet (4), and is movable with bonnet and cooperates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720302888XU CN201149097Y (en) | 2007-12-11 | 2007-12-11 | Dustproof needle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720302888XU CN201149097Y (en) | 2007-12-11 | 2007-12-11 | Dustproof needle valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201149097Y true CN201149097Y (en) | 2008-11-12 |
Family
ID=40116865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720302888XU Expired - Fee Related CN201149097Y (en) | 2007-12-11 | 2007-12-11 | Dustproof needle valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201149097Y (en) |
-
2007
- 2007-12-11 CN CNU200720302888XU patent/CN201149097Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20081112 Termination date: 20141211 |
|
| EXPY | Termination of patent right or utility model |