CN108374902A - High sealing liquefied gas shut-off valve - Google Patents
High sealing liquefied gas shut-off valve Download PDFInfo
- Publication number
- CN108374902A CN108374902A CN201810436524.3A CN201810436524A CN108374902A CN 108374902 A CN108374902 A CN 108374902A CN 201810436524 A CN201810436524 A CN 201810436524A CN 108374902 A CN108374902 A CN 108374902A
- Authority
- CN
- China
- Prior art keywords
- valve
- nut
- seat
- flap
- deck
- 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
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- 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
- F16K1/48—Attaching valve members to screw-spindles
- F16K1/487—Attaching valve members to screw-spindles by a fixing element extending in the axial direction of the spindle, e.g. a screw
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- 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
- F16K1/36—Valve members
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- 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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- 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
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
- F16K41/04—Spindle sealings with stuffing-box ; Sealing rings with at least one ring of rubber or like material between spindle and housing
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- 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
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
- F16K41/06—Spindle sealings with stuffing-box ; Sealing rings with at least one ring attached to both spindle and housing
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
A kind of high sealing liquefied gas shut-off valve, it is characterized in that including valve body, flap, valve rod, bonnet nut, valve deck, Packing seat, composite filling, gland, valve stem nut；Gasket seal, bolt, nut, O-ring seal, adjustment spring, bonnet nut, locking nut；Valve body is equipped with inlet and outlet, on an axis, the center of the enterprising outlet flow of valve body is equipped with valve seat to inlet and outlet, and valve rod is connect with the matched flap of valve seat, valve rod drives flap to open and close the keying of corresponding valve on valve seat, and flap is with sealing surface of seat using PTFE composite structures；Valve deck is equipped with above valve body, valve body valve deck is fixed by screw rod, nut, the position of the lower end package valve rod of valve deck is equipped with valve stem nut, valve stem nut is embedded in valve deck, and the top that valve stem nut matches the composite filling of annular with the screw thread on the outside of valve body is the O-ring seal, adjustment spring and bonnet nut being sleeved on valve rod.
Description
Technical field：
The present invention relates to a kind of shut-off valves, especially high sealing liquefied gas shut-off valve.
Background technology：
Least it is exactly readily to seal for the valve of liquefied gas in the media such as oil, chemical industry, chemical fertilizer, and highly dense sealing liquid
Good sealing can be realized by changing gas shut-off valve.This product is suitable for oil, chemical industry, chemical fertilizer, pesticide, chemical fibre, papermaking, sugaring, food
Product, power station, etc. industrial departments and agricultural or even living facilities purifier pipeline control system, pipe-line system is opened
Close the special valve of control.It is best suited for the high soft seal operating mode of the requirement of liquefied gas etc..The deficiency of traditional product is：Tradition is cut
Only valve, intolerant to liquefied gas.It cannot be sealed well in liquefied gas.
Invention content：
Purpose of the present invention is to for traditional shut-off valve, intolerant to liquefied gas.For in the case of liquefied gas cannot well it is close
Envelope, the present invention proposes a kind of high sealing liquefied gas shut-off valve, especially to being equipped with complete sealing knot at flap and valve rod two
Structure.
The technical scheme is that：A kind of high sealing liquefied gas shut-off valve, including valve body, flap, valve rod, valve deck spiral shell
Mother, valve deck, Packing seat, composite filling, gland, valve stem nut；Gasket seal, bolt, nut, O-ring seal adjust bullet
Spring, bonnet nut, locking nut；Valve body is equipped with inlet and outlet, imports and exports on an axis, in the enterprising outlet flow of valve body
Centre is equipped with valve seat, and valve rod is connect with the matched flap of valve seat, and valve rod drives flap to open and close the keying for corresponding to valve, valve on valve seat
Valve uses PTFE composite structures with sealing surface of seat；Valve deck is equipped with above valve body, valve body valve deck is fixed by screw rod, nut, valve
The position of the lower end package valve rod of lid is equipped with valve stem nut, and valve stem nut is embedded in valve deck, valve stem nut and the screw thread on the outside of valve body
Matching；Position above valve deck upper valve stem nut is equipped with Packing seat, annular composite filling and gland, and gland is to valve
Bar packing seal；The top of the composite filling of annular is the O-ring seal, adjustment spring and bonnet nut being sleeved on valve rod；
Bonnet nut is tightened on the internal thread on valve deck top.For adjusting the pressure to gland and composite filling, combination
Filler use graphite and PTFE composite, it is ensured that lubrication of the valve rod in composite filling be slidingly sealed.
Gasket seal and bolt are for installing valve deck and valve body.Valve rod and the matched screw thread of valve stem nut are inverted structures,
When rotatable handle is installed in valve rod upper end, handle can make the up and down motion of valve rod and drive the movement of valve flap, to open and close valve
Door.
Flap uses PTFE composite structures with sealing surface of seat：Circular pressing plate pushes down ring-shaped P TFE gaskets and is fixed on valve
The surface of valve, the outer diameter of PTFE seal pad are slightly larger than the outer diameter of circular pressing plate, and the outer diameter of PTFE seal pad is also slightly larger than valve seat
Inner ring diameter, so that flap PTFE seal pad outer rim and the inner ring of valve seat are compacted.Flap and sealing surface of seat, that is, valve seal
Face is all made of pile-up welding hard alloy, and accurate metalworking obtains again, to ensure the precision of sealing surface and the hardness of material.
Beneficial effects of the present invention：The improved advantage of the present invention：Adjustment spring combines dual packing seal structure, ensures
In the relatively reliable sealing of liquefied gas operating mode, reach long service life.Sealing surface uses PTFE composite structures, ensures liquefying
Sealing performance under gas working condition.Using assembling structure under valve stem nut, whole operation space is saved, is easily installed, operation is held
Easily, sealing effect is more preferable.Valve body sealing surface uses pile-up welding hard alloy, wear-resistant and corrosion resistance strong；It is applied widely.
Description of the drawings：
Fig. 1 is schematic structural view of the invention.
Specific implementation mode
As shown, valve body, 2, nut, 3, elastomeric pad, 4, pressing plate, 5, PTFE seal pad, 6, flap, 7, divided ring,
8, PTFE seal pad, 9 bonnet nuts, 10 mark closely screw, 11 valve rods, 12 valve stem nuts, and 13 mark closely screw, 14 gasket seals, 15,
Valve deck, 16, bolt, 17, nut, 18, composite filling, 19, gland, 20, O-ring seal, 21 adjustment springs, 22 valve deck spiral shells
Mother, 23 locking nuts, 24, O-ring seal, 25 handwheels, 26 nameplates, 27 nuts, 28 gaskets.
High sealing liquefied gas shut-off valve, including valve body, flap, valve rod, bonnet nut, valve deck, Packing seat, composite filling,
Eyelet bolt, nut, gland, gland, valve stem nut, handwheel；Mark closely screw, gasket seal, bolt, nut is O-shaped
Sealing ring, adjustment spring, bonnet nut, locking nut；Valve body is equipped with inlet and outlet, imports and exports on an axis, on valve body
The center for importing and exporting runner is equipped with valve seat, connect valve rod with valve seat matched flap, and valve rod drive flap opens and closes pair on valve seat
The keying of valve, flap is answered to use PTFE composite structures with sealing surface of seat.Valve deck is equipped with above valve body, valve body valve deck passes through spiral shell
Stem nut is fixed, and the position of the lower end package valve rod of valve deck is equipped with valve stem nut, and valve stem nut is embedded in valve deck, valve stem nut and valve
The screw thread matching of external side；Position above valve deck upper valve stem nut is equipped with the gland of Packing seat, annular composite filling
To valve rod packing seal.The top of the composite filling of annular is the O-ring seal being sleeved on valve rod, adjustment spring and valve deck spiral shell
It is female；Bonnet nut is tightened on the internal thread on valve deck top, for adjusting the pressure to gland and composite filling, group
Close filler use graphite and PTFE composite, it is ensured that lubrication of the valve rod in composite filling be slidingly sealed.
Gasket seal, valve deck, bolt is for installing valve deck and valve body.Valve rod and the matched screw thread of valve stem nut are upside-down mounting knots
Structure, when rotatable handle is installed in valve rod upper end, handle can make the up and down motion of valve rod and drive the movement of valve flap, to open and close
Valve.Rotation hand wheel band ovable valve stem is promoted or declines flap in the position of valve seat, valve flow channel thus may be implemented
On or off, to be controlled whether carrying out the output to liquefied gas.
Adjustment spring combines dual packing seal structure, and sealing surface uses PTFE composite structures.Using being filled under valve stem nut
Structure, valve body sealing surface use pile-up welding hard alloy.
Example the above is only the implementation of the present invention is not intended to limit the invention, it is all the present invention spirit and
All any modification, equivalent and improvement made by within principle etc., to be included within protection scope of the present invention.
Claims (4)
1. a kind of high sealing liquefied gas shut-off valve, it is characterized in that including valve body, flap, valve rod, bonnet nut, valve deck, Packing seat,
Composite filling, gland, valve stem nut；Gasket seal, bolt, nut, O-ring seal, adjustment spring, bonnet nut, lock
Tight nut；Valve body is equipped with inlet and outlet, and on an axis, the center of the enterprising outlet flow of valve body is equipped with valve seat to inlet and outlet, with
The matched flap of valve seat connects valve rod, and valve rod drives flap to open and close the keying for corresponding to valve, flap and valve base sealing on valve seat
Face uses PTFE composite structures；Valve deck is equipped with above valve body, valve body valve deck is fixed by screw rod, nut, the lower end package of valve deck
The position of valve rod is equipped with valve stem nut, and valve stem nut is embedded in valve deck, and valve stem nut is matched with the screw thread on the outside of valve body；Valve deck upper valve
Position above stem nut is equipped with Packing seat, annular composite filling and gland, and gland is to valve rod packing seal；
The top of the composite filling of annular is the O-ring seal, adjustment spring and bonnet nut being sleeved on valve rod；Bonnet nut is tightened on
On the internal thread on valve deck top.
2. high sealing liquefied gas shut-off valve according to claim 1, it is characterized in that gasket seal and bolt are for installing valve
Lid and valve body.
3. high sealing liquefied gas shut-off valve according to claim 1, it is characterized in that flap uses PTFE with sealing surface of seat
Composite structure：Ring-shaped P TFE gaskets are pushed down equipped with circular pressing plate and are fixed on the surface of flap, and the outer diameter of PTFE seal pad omits
More than the outer diameter of circular pressing plate, the outer diameter of PTFE seal pad is also slightly larger than the inner ring diameter of valve seat.
4. high sealing liquefied gas shut-off valve according to claim 1, it is characterized in that flap and sealing surface of seat, that is, valve body are close
Cover is all made of pile-up welding hard alloy and accurate metalworking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810436524.3A CN108374902A (en) | 2018-05-09 | 2018-05-09 | High sealing liquefied gas shut-off valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810436524.3A CN108374902A (en) | 2018-05-09 | 2018-05-09 | High sealing liquefied gas shut-off valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108374902A true CN108374902A (en) | 2018-08-07 |
Family
ID=63033214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810436524.3A Pending CN108374902A (en) | 2018-05-09 | 2018-05-09 | High sealing liquefied gas shut-off valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108374902A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117450275A (en) * | 2023-11-30 | 2024-01-26 | 良固阀门集团股份有限公司 | Liquefied gas stop valve with clearance detects cavity function |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202768892U (en) * | 2012-09-14 | 2013-03-06 | 滨海康源精密铸造有限公司 | Improved type stop valve |
-
2018
- 2018-05-09 CN CN201810436524.3A patent/CN108374902A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202768892U (en) * | 2012-09-14 | 2013-03-06 | 滨海康源精密铸造有限公司 | Improved type stop valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117450275A (en) * | 2023-11-30 | 2024-01-26 | 良固阀门集团股份有限公司 | Liquefied gas stop valve with clearance detects cavity function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180807 |
|
| RJ01 | Rejection of invention patent application after publication |