CN104676096A - Liquefied dimethyl ether cylinder valve - Google Patents
Liquefied dimethyl ether cylinder valve Download PDFInfo
- Publication number
- CN104676096A CN104676096A CN201510103725.8A CN201510103725A CN104676096A CN 104676096 A CN104676096 A CN 104676096A CN 201510103725 A CN201510103725 A CN 201510103725A CN 104676096 A CN104676096 A CN 104676096A
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- gland
- dimethyl ether
- described 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.)
- Pending
Links
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 238000007789 sealing Methods 0.000 claims abstract description 28
- 210000004907 gland Anatomy 0.000 claims description 27
- 239000004809 Teflon Substances 0.000 claims description 23
- 229920006362 Teflon® Polymers 0.000 claims description 23
- 239000011888 foil Substances 0.000 claims description 12
- 238000012856 packing Methods 0.000 claims description 12
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 11
- -1 polytetrafluoroethylene Polymers 0.000 abstract 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract 5
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract 5
- 229910000831 Steel Inorganic materials 0.000 description 2
- 244000309464 bull Species 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a liquefied dimethyl ether cylinder valve which comprises a valve body, wherein a valve cavity is arranged in the valve body; a valve rod is also arranged in the valve cavity; the upper part of the valve rod penetrates out of the valve cavity; a hand wheel sleeves the head of the valve rod; a nut is arranged at the upper end of the valve rod in a screwing way; a pressure spring is arranged between the nut and the hand wheel; a pressing cap is arranged at the upper end of the valve cavity in the screwing way; the valve rod penetrates through the pressing cap; a pressing cover positioned above the pressing cap is also arranged on the valve rod in a sleeving way; the pressing cover is positioned below the hand wheel; the pressing cover is downwards pressed under the downward pressure of the pressure spring; a polytetrafluoroethylene sealing ring sleeves the valve rod between the pressing cover and the pressing cap; when the pressing cover is downwards pressed, the polytetrafluoroethylene sealing ring is pressed, so that the pressing cover, the pressing cap and the valve rod which are in contact with the polytetrafluoroethylene sealing ring are sealed by the polytetrafluoroethylene sealing ring. According to the liquefied dimethyl ether cylinder valve disclosed by the invention, the better sealing effect is achieved by using the polytetrafluoroethylene sealing ring sleeving the valve rod between the pressing cover and the pressing cap.
Description
Technical field
The present invention relates to a kind of liquefied dimethyl ether cylinder valve.
Background technique
Liquefied dimethyl ether cylinder valve generally adopts valve of liquified gas bomb, but the sealing mechanism in valve of liquified gas bomb adopts rubber, the gas corrosion and rubber can be liquefied, therefore sealing can not be guaranteed, therefore also there is the special cylinder valve of liquefied dimethyl ether, such as application number is that the Chinese invention patent application of 201310323228.X just provides a kind of liquefied dimethyl ether cylinder valve, it adopts teflon seal ring to seal, dimethyl ether can not produce corrosion to teflon seal ring, but sealing effect need to strengthen.
Summary of the invention
In order to overcome the above-mentioned deficiency of existing liquefied dimethyl ether cylinder valve, the invention provides a kind of liquefied dimethyl ether cylinder valve of seal ring better effects if.
The technological scheme that the present invention solves its technical problem is: a kind of liquefied dimethyl ether cylinder valve, comprises valve body, and the side of described valve body is provided with gas port, and the bottom surface of described valve body is provided with interface;
In described valve body, there is valve pocket, described gas port and interface all with described valve pocket UNICOM, in described valve pocket, spiral shell is provided with valve cast, and the lower end of described valve cast is provided with valve pad, and described valve cast is descending thus sealed the connection position of interface and valve pocket by described valve pad;
Be positioned at the valve rod above described valve cast in described valve pocket in addition, the top of described valve rod passes outside described valve pocket, and the valve rod described in rotation can drive described valve cast to rotate;
The head cover of described valve rod has handwheel, and the upper end spiral shell of described valve rod is provided with nut, is provided with stage clip between described nut and described handwheel;
The upper end spiral shell of described valve pocket is provided with pressure cap, described valve rod is through described pressure cap, described valve rod is also arranged with the gland be positioned at above described pressure cap, described gland is positioned at the below of described handwheel, and gland described under the downforce of described stage clip is pressed downward tightly;
Valve rod between described gland and described pressure cap overlaps and has teflon seal ring, when gland is pressed downward, described teflon seal ring is compressed, thus the gland be in contact with it, pressure cap, valve rod place seal by this teflon seal ring.
Further, foil foil paper packing ring is provided with between described gland and described handwheel.
Further, described valve rod is provided with sealing bulge loop, the lower end of described pressure cap is provided with the seal recess corresponding with described sealing bulge loop, described sealing bulge loop is positioned at described seal recess, is filled with the secondary packing ring of teflon between described sealing bulge loop and the side of described seal recess, bottom surface.
Further, on described valve body, interference penetrates pin, and the afterbody of described pin penetrates in described pressure cap.
Further, anaerobic adhesive is scribbled between described nut and described valve rod.
The present invention is in use, the same with existing liquefied dimethyl ether cylinder valve, is connected to by interface on steel cylinder, is given vent to anger by gas port.In order to itself and valve of liquified gas bomb be made a distinction easily, interface and gas port all can be set to outside thread mouth.Rotate handwheel, band ovable valve stem rotates, and valve rod drives valve cast to rotate, and valve cast is elevated under threaded function, is sealed when valve cast declines by the connection position of valve pad by interface and valve pocket, and when valve cast rises, the connection position of interface and valve pocket is opened, and can give vent to anger.Valve rod drives the mode of valve cast to be generally establish a rectangle transit in the upper end of valve cast, is provided with the rectangle bull stick stretched in rectangle transit in the lower end of valve rod, valve cast can be driven to rotate by the valve rod rotated.
Sealing place of the present invention is mainly teflon seal ring sheathed on the valve rod between gland and pressure cap, reaches sealing effect by this teflon seal ring.The secondary packing ring of teflon and be provided with foil foil paper packing ring between gland and handwheel and play auxiliary seal effect.
Beneficial effect of the present invention is: teflon seal ring sheathed on the valve rod between gland and pressure cap, reaches sealing effect by this teflon seal ring, and its sealing effect is better.The secondary packing ring of teflon and be provided with foil foil paper packing ring between gland and handwheel and play auxiliary seal effect, can reach better sealing effect.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
With reference to Fig. 1, a kind of liquefied dimethyl ether cylinder valve, comprises valve body 1, and the side of described valve body 1 is provided with gas port 2, and the bottom surface of described valve body 1 is provided with interface 3.
In described valve body 1, there is valve pocket, described gas port 2 and interface 3 all with described valve pocket UNICOM, in described valve pocket, spiral shell is provided with valve cast 4, and the lower end of described valve cast 4 is provided with valve pad 5, and described valve cast 4 is descending thus sealed the connection position of interface 3 with valve pocket by described valve pad 5.
Be positioned at the valve rod 6 above described valve cast 4 in described valve pocket in addition, the top of described valve rod 6 passes outside described valve pocket, and the valve rod 6 described in rotation can drive described valve cast 4 to rotate.Valve rod 6 drives the mode of valve cast 4 to be generally establish a rectangle transit 7 in the upper end of valve cast 4, is provided with the rectangle bull stick 8 stretched in rectangle transit 7 in the lower end of valve rod, valve cast 4 can be driven to rotate by the valve rod 6 rotated.
The head cover of described valve rod 6 has handwheel 9, and the upper end spiral shell of described valve rod is provided with nut 10, is provided with stage clip 11 between described nut 10 and described handwheel 9.Nut 10 described in the present embodiment and scribble anaerobic adhesive between described valve rod 6, can prevent nut from getting loose.
The upper end spiral shell of described valve pocket is provided with pressure cap 12, described valve rod 6 is through described pressure cap 12, described valve rod 6 is also arranged with the gland 13 be positioned at above described pressure cap 12, described gland 13 is positioned at the below of described handwheel 9, and gland 13 described under the downforce of described stage clip 11 is pressed downward tightly.
Valve rod between described gland 14 and described pressure cap 12 overlaps and has teflon seal ring 14, when gland 14 is pressed downward, described teflon seal ring 14 is compressed, thus the gland be in contact with it, pressure cap, valve rod place seal by this teflon seal ring 14.
In use, the same with existing liquefied dimethyl ether cylinder valve, interface 3 is connected on steel cylinder, is given vent to anger by gas port 2.In order to be gone valve of liquified gas bomb to make a distinction easily, interface 3 and gas port 2 all can be set to outside thread mouth.Rotate handwheel 9, band ovable valve stem 6 rotates, and valve rod 6 drives valve cast 4 to rotate, valve cast 4 is elevated under threaded function, sealed by the connection position of valve pad 5 by interface and valve pocket when valve cast 4 declines, when valve cast 4 rises, the connection position of interface and valve pocket is opened, and can give vent to anger.Sealing place of the present invention is mainly teflon seal ring 14 sheathed on the valve rod between gland and pressure cap, reaches sealing effect by this teflon seal ring 14.
In the present embodiment, between described gland 13 and described handwheel 9, be provided with foil foil paper packing ring 15.Described valve rod is provided with sealing bulge loop 16, the lower end of described pressure cap is provided with the seal recess corresponding with described sealing bulge loop 16, described sealing bulge loop 16 is positioned at described seal recess, is filled with the secondary packing ring 17 of teflon between described sealing bulge loop 16 and the side of described seal recess, bottom surface.The secondary packing ring 17 of teflon and be provided with foil foil paper packing ring 15 between gland and handwheel and play auxiliary seal effect.
In the present embodiment, on described valve body 1, interference penetrates pin 18, and the afterbody of described pin 18 penetrates in described pressure cap 12.The afterbody of pin 18 can directly to insert or not interference is inserted in pressure cap 12 in interference, also can be provided with a circle slot on pressure cap 12, and the afterbody of pin 18 such as to insert in this slot at the structure.The meaning arranging pin 18 is: liquefied dimethyl ether cylinder valve is a kind of device forbidding secondary to use, non-dismountable, re-use after having dismantled and there is great danger, if rotate pressure cap intention after arranging pin 18 valve is taken apart, valve body 1 will be destroyed, thus cannot re-use, the situation that artificial secondary uses can be avoided.
Claims (5)
1. a liquefied dimethyl ether cylinder valve, comprises valve body, and the side of described valve body is provided with gas port, and the bottom surface of described valve body is provided with interface;
In described valve body, there is valve pocket, described gas port and interface all with described valve pocket UNICOM, in described valve pocket, spiral shell is provided with valve cast, and the lower end of described valve cast is provided with valve pad, and described valve cast is descending thus sealed the connection position of interface and valve pocket by described valve pad;
Be positioned at the valve rod above described valve cast in described valve pocket in addition, the top of described valve rod passes outside described valve pocket, and the valve rod described in rotation can drive described valve cast to rotate;
The head cover of described valve rod has handwheel, and the upper end spiral shell of described valve rod is provided with nut, is provided with stage clip between described nut and described handwheel;
It is characterized in that: the upper end spiral shell of described valve pocket is provided with pressure cap, described valve rod is through described pressure cap, described valve rod is also arranged with the gland be positioned at above described pressure cap, described gland is positioned at the below of described handwheel, and gland described under the downforce of described stage clip is pressed downward tightly;
Valve rod between described gland and described pressure cap overlaps and has teflon seal ring, when gland is pressed downward, described teflon seal ring is compressed, thus the gland be in contact with it, pressure cap, valve rod place seal by this teflon seal ring.
2. liquefied dimethyl ether cylinder valve as claimed in claim 1, is characterized in that: be provided with foil foil paper packing ring between described gland and described handwheel.
3. liquefied dimethyl ether cylinder valve as claimed in claim 1 or 2, it is characterized in that: described valve rod is provided with sealing bulge loop, the lower end of described pressure cap is provided with the seal recess corresponding with described sealing bulge loop, described sealing bulge loop is positioned at described seal recess, is filled with the secondary packing ring of teflon between described sealing bulge loop and the side of described seal recess, bottom surface.
4. liquefied dimethyl ether cylinder valve as claimed in claim 1 or 2, it is characterized in that: on described valve body, interference penetrates pin, the afterbody of described pin penetrates in described pressure cap.
5. liquefied dimethyl ether cylinder valve as claimed in claim 1 or 2, is characterized in that: scribble anaerobic adhesive between described nut and described valve rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510103725.8A CN104676096A (en) | 2015-03-10 | 2015-03-10 | Liquefied dimethyl ether cylinder valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510103725.8A CN104676096A (en) | 2015-03-10 | 2015-03-10 | Liquefied dimethyl ether cylinder valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104676096A true CN104676096A (en) | 2015-06-03 |
Family
ID=53311516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510103725.8A Pending CN104676096A (en) | 2015-03-10 | 2015-03-10 | Liquefied dimethyl ether cylinder valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104676096A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2404014Y (en) * | 2000-01-05 | 2000-11-01 | 陆丰市光辉合成液化气厂 | Gas supply device for liquefied gas cylinder |
| EP1456568B1 (en) * | 2001-11-22 | 2007-04-18 | Tour & Andersson AB | Valve, particularly balancing valve for central heating plants |
| CN201386793Y (en) * | 2009-04-08 | 2010-01-20 | 扬州市安宜阀门有限公司 | Dimethyl ether non-removable cylinder valve |
| CN201982957U (en) * | 2011-01-18 | 2011-09-21 | 广东盈泉钢制品有限公司 | Liquefied dimethyl ether steel cylinder |
| CN202140576U (en) * | 2011-07-01 | 2012-02-08 | 宁波三安制阀有限公司 | Low-temperature stop valve |
| CN102182835B (en) * | 2011-01-30 | 2012-07-04 | 张家港富瑞特种装备股份有限公司 | Low-temperature stop valve |
| CN103410989A (en) * | 2013-07-30 | 2013-11-27 | 江苏民生特种设备集团有限公司 | Liquefied dimethyl ether cylinder valve |
| CN203395342U (en) * | 2013-07-25 | 2014-01-15 | 宁波金佳佳阀门有限公司 | Liquefied oil cylinder valve with inflatable protection device |
| CN204512641U (en) * | 2015-03-10 | 2015-07-29 | 宁波金佳佳阀门有限公司 | A kind of liquefied dimethyl ether cylinder valve |
-
2015
- 2015-03-10 CN CN201510103725.8A patent/CN104676096A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2404014Y (en) * | 2000-01-05 | 2000-11-01 | 陆丰市光辉合成液化气厂 | Gas supply device for liquefied gas cylinder |
| EP1456568B1 (en) * | 2001-11-22 | 2007-04-18 | Tour & Andersson AB | Valve, particularly balancing valve for central heating plants |
| CN201386793Y (en) * | 2009-04-08 | 2010-01-20 | 扬州市安宜阀门有限公司 | Dimethyl ether non-removable cylinder valve |
| CN201982957U (en) * | 2011-01-18 | 2011-09-21 | 广东盈泉钢制品有限公司 | Liquefied dimethyl ether steel cylinder |
| CN102182835B (en) * | 2011-01-30 | 2012-07-04 | 张家港富瑞特种装备股份有限公司 | Low-temperature stop valve |
| CN202140576U (en) * | 2011-07-01 | 2012-02-08 | 宁波三安制阀有限公司 | Low-temperature stop valve |
| CN203395342U (en) * | 2013-07-25 | 2014-01-15 | 宁波金佳佳阀门有限公司 | Liquefied oil cylinder valve with inflatable protection device |
| CN103410989A (en) * | 2013-07-30 | 2013-11-27 | 江苏民生特种设备集团有限公司 | Liquefied dimethyl ether cylinder valve |
| CN204512641U (en) * | 2015-03-10 | 2015-07-29 | 宁波金佳佳阀门有限公司 | A kind of liquefied dimethyl ether cylinder valve |
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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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150603 |