CN204187007U - Safety type packing seal structure - Google Patents
Safety type packing seal structure Download PDFInfo
- Publication number
- CN204187007U CN204187007U CN201420637422.5U CN201420637422U CN204187007U CN 204187007 U CN204187007 U CN 204187007U CN 201420637422 U CN201420637422 U CN 201420637422U CN 204187007 U CN204187007 U CN 204187007U
- Authority
- CN
- China
- Prior art keywords
- packing
- seal structure
- safety type
- gland
- braided
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- 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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Abstract
This patent belongs to the valve technology field with stuffing box, safety type packing seal structure, comprise the Gland of closed valve gap packing cavity upper end-hole, packing cavity bottom is provided with heelpiece, liner, V-arrangement tetrafluoro filler, lower liner, braided packing is disposed with from top to bottom between Gland and heelpiece, this braided packing inside is provided with drainage spacer ring, and valve gap lid is provided with the conduction hole communicated with drainage spacer ring position, the external drainage pipe with negative pressure pump of this conduction hole.This patent can improve the sealability of filler, is applicable to oxygen, hydrogen or has the liquid and other medium of particle.
Description
Technical field
The utility model belongs to the valve technology field with stuffing box.
Background technique
Valve is the controlling component in fluid delivery system, has cut-off, adjustment, water conservancy diversion, prevents the functions such as adverse current, voltage stabilizing, shunting or overflow pressure relief.Valve generally comprises valve seat, valve gap, spool and valve rod, and valve seat and valve gap are connected to form the chamber holding spool, and valve rod outer termination power mechanism, valve rod the inner is run through valve gap and is connected with spool, and valve rod band movable valve plug moves up and down and valve is opened and closed gradually.
Valve rod leaks to not make the medium in valve body, and the valve rod in being kept in motion needs to carry out motive sealing with valve gap.The sealing of valve rod adopts the form of stuffing box usually, between valve rod and stuffing box, place filler.Existing stuffing box is generally gland type, and comprise Gland, swing bolt, Packing seat, Gland is connected by swing bolt with valve gap.But this common filling-material structure cannot meet the conveying of some special medias, especially when the liquid carried containing particle or the medium such as oxygen, hydrogen, higher to the sealing requirements of filling-material structure, in addition, in oxygen and hydrogen, the molecule be mingled with in moisture or liquid can be brought into filler part by valve rod, filler part is infiltrated or larger wearing and tearing, affect the sealing of whole filler part; In addition, be probably mingled with other corrosive gas in the gas such as oxygen or hydrogen, time long, use can corrode filler part, makes to occur between valve rod and valve gap that fugacity is revealed.
Model utility content
The utility model is intended to provide a kind of and improves Reliability of Packing Seal, has the safety type packing seal structure of anticorrosive effect.
Safety type packing seal structure in this programme, comprise the Gland of closed valve gap packing cavity upper end-hole, packing cavity bottom is provided with heelpiece, liner, V-arrangement tetrafluoro filler, lower liner, braided packing is disposed with from top to bottom between Gland and heelpiece, this braided packing inside is provided with drainage spacer ring, valve gap lid is provided with the conduction hole communicated with drainage spacer ring position, the external drainage pipe with negative pressure pump of this conduction hole.
The beneficial effects of the utility model: be provided with O RunddichtringO on the inwall of Gland, about serving good sealing, prevent valve rod from movement process, taking medium to Gland place and reveal between valve rod and Gland; In addition, sandwiched V-arrangement tetrafluoro filler between upper liner and lower liner, the tetrafluoro filler of V-arrangement has certain elasticity, can compress valve rod diametrically, makes the motive sealing that valve rod can be good in movement process; Finally, arrange drainage spacer ring at braided packing inwall, steam or other impurity are brought in this drainage spacer ring and are stored by valve rod, and drainage pipe, by the material sucking-off at this place, prevents it from affecting the sealing of filling-material structure.
Further, set up nockbush between at the bottom of the described heelpiece at packing cavity and packing cavity chamber, this nockbush passes into the cleaning medium higher than pipeline medium 0.05-0.1Mpa, can prevent particulate matter in medium from entering in filling-material structure.
Further, described braided packing is the braided packing of carbon fibre dipping teflon, has good corrosion resistance, is applicable to the sealing of the media such as weak acid, weak base, organic solvent.
Further, the V-arrangement of described V-arrangement tetrafluoro filler is opening down, because whole packing seal structure loads from the upper end of valve rod, therefore by the opening surface of V-arrangement tetrafluoro filler down, when making packing seal structure load valve rod, V-arrangement tetrafluoro filler and valve rod friction make its V angle open completely, and V-arrangement tetrafluoro filler and braided packing fit tightly, and prevent their axis from occurring space.
Accompanying drawing explanation
Fig. 1 is that the structure of the utility model safety type packing seal structure embodiment looks schematic diagram.
Embodiment
Below by embodiment, the utility model is described in further detail:
Reference character in Figure of description 1 comprises: the braided packing of 1-Gland, 2-O RunddichtringO, the upper liner of 3-, 4-lower liner, 5-V shape tetrafluoro filler, 6-carbon fibre dipping teflon, 7-drainage spacer ring, 8-drainage pipe, 9-nockbush, 10-valve rod, 11-valve gap.
Embodiment is substantially as shown in Figure 1: safety type packing seal structure, is positioned at the packing cavity of valve gap 11, and valve rod 10 axially runs through this packing cavity.Safety type packing seal structure in the present embodiment, comprise Gland 1, Gland 1 is positioned at the upper end-hole of packing cavity and this upper end-hole is closed, Gland 1 only leaves the valve rod hole moved for valve rod 10, the valve rod hole inwall of Gland 1 opens Packed groove, loads O RunddichtringO 2 in this groove.
Install a nockbush 9 at the bottom of packing cavity chamber, this nockbush 9 passes into the cleaning medium higher than pipeline medium 0.05-0.1Mpa, can prevent particulate matter in medium from entering in filling-material structure.Liner 3 is loaded from top to bottom successively between filler depression bar and nockbush 9, V-arrangement tetrafluoro filler 5, lower liner 4, carbon fibre dipping teflon braided packing 6, the V-arrangement of V-arrangement tetrafluoro filler 5 is opening down, containing drainage spacer ring 7 in carbon fibre dipping teflon braided packing 6, carbon fibre is flooded teflon braided packing 6 and is separated into two sections by this drainage spacer ring 7, valve gap 11 lid has the conduction hole communicated with drainage spacer ring 7 position, the external drainage pipe 8 of this conduction hole, drainage pipe 8 is connected with the negative pressure pump outside valve, the liquid brought into when valve rod 10 or the alluvial of other impurity are at drainage spacer ring 7, then can by pneumatic negative pressure pump by the material sucking-off at this place.
Above-described is only embodiment of the present utility model, and in scheme, the general knowledge such as known concrete structure and characteristic does not do too much description at this.Should be understood that; for a person skilled in the art, under the prerequisite not departing from the utility model structure, some distortion and improvement can also be made; these also should be considered as protection domain of the present utility model, and these all can not affect effect and the practical applicability of the utility model enforcement.The protection domain that this application claims should be as the criterion with the content of its claim, and the embodiment in specification etc. record the content that may be used for explaining claim.
Claims (4)
1. safety type packing seal structure, comprise the Gland of closed valve gap packing cavity upper end-hole, it is characterized in that, packing cavity bottom is provided with heelpiece, liner, V-arrangement tetrafluoro filler, lower liner, braided packing is disposed with from top to bottom between Gland and heelpiece, this braided packing inside is provided with drainage spacer ring, and valve gap lid is provided with the conduction hole communicated with drainage spacer ring position, the external drainage pipe with negative pressure pump of this conduction hole.
2. safety type packing seal structure according to claim 1, is characterized in that: set up nockbush between at the bottom of the heelpiece and packing cavity chamber of described packing cavity.
3. safety type packing seal structure according to claim 2, is characterized in that: described braided packing is the braided packing of carbon fibre dipping teflon.
4. safety type packing seal structure according to claim 3, is characterized in that: the V-arrangement of described V-arrangement tetrafluoro filler is opening down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420637422.5U CN204187007U (en) | 2014-10-30 | 2014-10-30 | Safety type packing seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420637422.5U CN204187007U (en) | 2014-10-30 | 2014-10-30 | Safety type packing seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204187007U true CN204187007U (en) | 2015-03-04 |
Family
ID=52619009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420637422.5U Expired - Fee Related CN204187007U (en) | 2014-10-30 | 2014-10-30 | Safety type packing seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204187007U (en) |
-
2014
- 2014-10-30 CN CN201420637422.5U patent/CN204187007U/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: 20150304 Termination date: 20151030 |
|
| EXPY | Termination of patent right or utility model |