CN201582486U - Undamped self-sealing device realized by multi-stage valve rod - Google Patents
Undamped self-sealing device realized by multi-stage valve rod Download PDFInfo
- Publication number
- CN201582486U CN201582486U CN2009201885187U CN200920188518U CN201582486U CN 201582486 U CN201582486 U CN 201582486U CN 2009201885187 U CN2009201885187 U CN 2009201885187U CN 200920188518 U CN200920188518 U CN 200920188518U CN 201582486 U CN201582486 U CN 201582486U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve rod
- self
- handle shaft
- multistage
- 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
Links
Images
Landscapes
- Mechanically-Actuated Valves (AREA)
Abstract
The utility model discloses an undamped self-sealing device realized by multi-stage valve rod, comprising a valve body which is internally provided with a ball body or a valve plate; the top end of the valve body is provided with a valve cover; the ball body or the valve plate is connected with the multi-stage valve rod; the other end of a central valve rod of the multi-stage valve rod is movably connected with a handle shaft; the other end of the handle shaft is fixed with a spring; and the upper surfaces protruding out of two sides of the tail end of the handle shaft and the lower surface of the valve cover form the self-sealing device. The umdamped self-sealing device has the benefits of simple structure, no need of high accuracy, low processing cost and no friction resistance of the sealing surface; and the inside and the outside of the valve have no leakage of hand wheels, thus saving labor and power, omitting a valve bracket, reducing the total height size of the valve, being beneficial to operation, reducing the weight and reducing the cost. Compared with similar valves, the undamped self-sealing device can prolong the service life by tens of times.
Description
Technical field
The present invention relates to a kind of without hindrance self-seal device, the design principle of particularly a kind of overlapping valve rod and batter post nut body can be applied directly in the sealing surface of semispherical valve, two halves ball valve, gate valve and butterfly valve, does not have the device of metal self-sealing between surface friction drag and hand wheel shaft when opening and closing.
Background technique
As everyone knows, the sealing surface of ball valve, gate valve and butterfly valve opens and closes by friction (slippage).Particularly bigbore valve, the increase of seal pressure, the life-span of valve in the increase of surface friction drag, serious threat.Also have the stroke of valve rod to increase, the filler frictional loss is also just increased, the degree of finish height of valve rod is directly judged the grade of valve; The handle of the stopcock that half-twist opens and closes, ball valve, butterfly valve, this cries economizes merit, rotates the worm screw handwheel that tens of circles open and close, and this cries laborsaving.Do not have a kind of not only laborsaving but also economize the handle of merit or the mechanical actuating mechanism of hand-wheel-type comes to be the valve adequate and systematic service.
Content of the present invention
Shortcoming at existing self-seal device, the invention provides in the middle of the keying that can be applied directly to semispherical valve, two halves ball valve, gate valve and butterfly valve of a kind of overlapping valve rod and batter post nut body, when opening and closing, do not have the device of metal self-sealing between surface friction drag and hand wheel shaft.
To achieve these goals, the measure that the present invention taked:
The multistage valve rod of a kind of usefulness is realized without hindrance self-seal device, comprise valve body, be provided with spheroid or flashboard in the described valve body, the top of valve body is provided with valve gap, described spheroid or flashboard are connected with multistage valve rod, the other end of described multistage valve rod center valve rod is connected with handle shaft, and the other end of described handle shaft is fixed with spring, and the upper surface that protrude the terminal both sides of handle shaft contacts the composition self-seal device with the lower surface of valve gap.
Described multistage valve rod is made up of valve rod and nut, valve rod outside loading nut, nut outside dress valve rod and the multistage valve rod formed.
The first order of described multistage valve rod is that the Stem Mut of central shaft valve rod is a closely-pitched, and second level Stem Mut is a coarse thread, and third level valve rod is a bull tooth distance.
It is by being made of welded connection that described handle shaft and valve gap are formed self-seal device.
The spring on described handle shaft top is fixed with nut, and the handle shaft top also is provided with handle or handwheel.
Beneficial effect of the present invention: simple in structure, need not highi degree of accuracy, processing cost is low, and sealing surface does not have surface friction drag.It is not only laborsaving but also economize merit that the inside and outside nothing of valve is leaked handwheel, and save valve rack, reduce valve height overall size, favourable operation, weight reduction reduces cost.Compare with similar valve, can improve tens of times of working lifes.
Description of drawings
Fig. 1, the without hindrance metal self-sealing semispherical valve of two-stage valve rod batter post nut of the present invention single-direction balls face seal application structure intention.
Fig. 2, the two-way plane sealing of the without hindrance gate valve of three grades of valve rod level Four of the present invention speed change mechanism application structure intention.
The structure intention that Fig. 3, the present invention implement on spherical butterfly valve.
Embodiment
As shown in Figure 1: the present invention program's two-stage valve rod three-step gear shift metal self-sealing semispherical valve comprises that valve body 1 and valve gap 11 form the shape chamber of a sealing.Valve gap 11 is heads in screwing in screw, seals with " O " shape cushion rubber 15 in order to prevent the screw thread seepage.Valve rod and handle shaft 10 disconnect, with coupled axle-pin 9 series connection, with the direct built-up welding of cemented carbide in valve gap 11 and handle shaft 10, on the two the plane of sealing surface 16, grind mutually with mill cream, surface finishment such as minute surface, hardness is more than the HRC60, handle shaft 10 disconnects with stem shaft 8, handle shaft 10 is under the effect of nut 12 and butterfly spring 13, sealing surface 16 is realized pre-sealed, under the effect of pressure medium, make sealing surface 16 selfsealings more effectively, simultaneously under the effect of coupled axle-pin 9, the quiet dense envelope of handle shaft 10 same maintenances, all right directly transferring power operating valve lever 8, valve rod 8 is a first order Stem Mut, the tooth distance is a closely-pitched, valve rod 7 internal thread teeth in the second level are apart from being complementary for closely-pitched and valve rod 8, outside thread is that multiple thread and batter post bull nut 6 are complementary, and long band chain 5 is set on bull nut 6 batter posts, is contained in hemisphere 4 inclined holes corresponding with groove, when handle 14 reverses, by coupled axle-pin 9 drive 8 rotations of first order valve rods make second level valve rod 7 rise until with 8 rotations of first valve rod, make second valve rod 7 rise until with first valve rod and tight after, continue to reverse until bull nut 6 and rise and the second valve rod inclined-plane 17 and tight, under the effect of long band chain 5, drive hemisphere, rotate 45 °, under the effect of position limit pin 2, make the hemisphere standard-sized sheet, spacing hemisphere rotation, the orientation of handle 14 is engraved mark, be the standard-sized sheet mark of this valve; Because spheroid has limit stoper, make the two-stage valve rod mutually and after tight when opening, spheroid can positive and negatively rotate freely 90 °.When opening, clockwise 90 ° of handle 14 clockwise spheroids, again by position limit pin 2 spacing rotations, handle 14 continues afterburning rotation, spheroid stops operating, batter post bull nut 6 is moved downward fast, under the effect of batter post and spheroid inclined hole, when ball face sealing face 18 contacts with the sealing surface 18 of sphere valve seat 21, when multiple-threaded load surpasses first order Stem Mut and tight surface friction drag, second level valve rod stops operating automatically, and when making the afterburning rotation of first order valve rod closely-pitched 2-3 circle, the ball face sealing specific pressure rises till handle forwards closing flag to.This valve is thoroughly closed.Valve seat 21 is to screw in debugging with coarse thread, and metallic packing ring (or " O " shape cushion rubber) 19 is to screw in valve seat by closely-pitched with trim ring 20.The anti-cylinder ball seat 2 that blows out is to screw after adding sealing gasket with cover cap 22 from valve inner threading outside to get final product.
As Fig. 2, the application of the two-way plane sealing of the without hindrance gate valve of three grades of valve rod level Four of the present invention speed change mechanism, because what gate valve was different with ball valve is that the keying stroke is too high, height dimension is more much bigger than ball valve, it is same that also to satisfy handwheel both laborsaving, economize the requirement of merit again, so the two-stage valve rod is increased to three grades of valve rods 31, purpose is to finish the highest stroke with the shortest size.First order valve rod 8 teeth are apart from be closely-pitched, and the tooth of second level valve rod 7 is apart from being coarse thread or double thread screw, and the tooth distance of third level valve rod 31 is the large screw pitch of three or four-head.Four batter post hole nuts 24 are only limited to inner chamber at flashboard 30 along under four operations of batter post 23 at multistage valve rod, move up and down under the principle of batter post, inclined hole, nut moves downward, flashboard 30 is close to sealing surface of seat 29, improves specific pressure and realizes sealing, and nut 24 moves upward, when being close to the top cabinet of flashboard 30, sealing surface 29 unclamps, and is standard-sized sheet when flashboard goes upward to stop, and simultaneously multistage Stem Mut one-level one-level ground is also tight automatically; Another level one-level ground unclamps automatically under the effect of handwheel and thickness tooth, thoroughly closes until flashboard.The flashboard 30 here is a double disc parallel seat, these two flashboards altogether beam overall only less than the valve seat space less than half millimeter.The rule that this flashboard moves up and down is: earlier altogether after upstream or downstream again, to opening again after bottom dead center.Sealing surface does not have mechanical specific pressure friction.Improved the working life of sealing surface widely.Metal hard-sealing also makes the height overall of gate valve be reduced to the limit between hand wheel shaft.The 34th, the storage area that flashboard is up.
As Fig. 3, the present invention for example, is designed to two to batter post cover 6 on sphere dish valve, each one up and down, middle valve rod has become connecting rod, 6 one-tenth in the batter post at two cover piston, with seal ring 15 two piston stroke spaces 39,43 have up and down been become two cylinder bodies, when handwheel keying butterfly plate, piston stroke space 39,43 can produce malleation or negative pressure up and down, intangibly increase resistance, waste energy, have to respectively open a hole on two cylinder bodies up and down for this reason at valve body 1.Last hole is 35, and following hole is 40, helps air or fluid and passes in and out naturally, reduces the handwheel negative load.Do not prevent in the middle of valve body, opening again two screws for this reason, it is flow-in hole 38, flow-out hole 36 refills a three-way valve below handwheel, to two cylinder bodies 35 up and down with pipeline, 40 and advance drain hole 38,36 and be communicated with, on the threeway handle, indicate two marks of switch, the meaning is to open by threeway, be to open upper cylinder half 35 influent streams, connect 40 flow direction dischargings 36 simultaneously and allow down cylinder 40 discharge, under the effect of pressure medium, make upper piston descending, push away batter post cover 6, the axis of cone 23 and last tapered sleeve 6 thereof make butterfly plate 37 under the effect of butterfly plate inclined hole at two about in the of 37, ball face sealing face 18 increases seal pressure, till the sealing stop.Realize valve in the leading type valve, little valve is driven big valve.Butterfly plate is thoroughly closed.If close the little valve of threeway, open down cylinder 40. exactly and make fluid promotion lower piston up, be communicated with upper cylinder half 35 simultaneously, connect discharge orifice 36, under the pressure of interior media, butterfly plate is opened automatically.Here the tapering of the tapered sleeve 6 of indication is not more than 3 °, be equivalent to that is to say at 30: 1 that flowing medium is to a thirtieth of the total pressure of butterfly plate, add tapered sleeve and taper hole wall load frictional force, the a thirtieth more again diameter of cylinder (piston diameter) that just equals that is equivalent to the valve latus rectum also has handwheel also can help to open and close to do suitable merit, and this three-way cock is sensitive switch again.This leading type principle at first is will be designed to the safety check principle to valve, lean on the power of media flow as power source when closing, carry out automatic-closing valve, when opening, explosive force by pressure release real moment promotes the piston acting, guiding groove 42 when mobile up and down, allow the slippage up and down in guiding groove of dish plate, rotate 90 °; Promptly open or close.Till making sealing reach suitable specific pressure.A forced filling oil cup 33 is adorned at the center of handwheel 14, and the center fuel supply line 45 from hand wheel shaft 8 is lubricated lubricant oil to each Stem Mut, with antirust reality.O shape cushion rubber (or filler) 15 also can be considered to improve wear-resisting seal element with metal elastic-sealed circle, is static seal metallic piston ring.The present invention's this leading type fine motion principle of automatic control and method thereof are implemented valve in the valve for example on butterfly valve, add between overlap valve stem nut mechanism and hand wheel shaft and be applied on the structure of butterfly valve with the metal hard-sealing method, make butterfly valve seem very exquisite, but also improved the practicability of valve widely.
Beneficial effect of the present invention: simple in structure, need not highi degree of accuracy, processing cost is low, and sealing surface does not have surface friction drag.It is not only laborsaving but also economize merit that the inside and outside nothing of valve is leaked handwheel, and save valve rack, reduce valve height overall size, favourable operation, weight reduction reduces cost.Compare with similar valve, can improve tens of times of working lifes.
Can be widely applied to gate valve, ball valve, stop valve and various valve field with regard to the leading type principle.
Claims (5)
1. realize without hindrance self-seal device with multistage valve rod for one kind, comprise valve body, be provided with spheroid or flashboard in the described valve body, the top of valve body is provided with valve gap, it is characterized in that described spheroid or flashboard are connected with multistage valve rod, the other end of described multistage valve rod center valve rod is connected with handle shaft, the other end of described handle shaft is fixed with spring, and the upper surface that protrude the terminal both sides of handle shaft contacts the composition self-seal device with the lower surface of valve gap.
2. the multistage valve rod of a kind of usefulness according to claim 1 is realized without hindrance self-seal device, it is characterized in that, described multistage valve rod is made up of valve rod and nut, valve rod outside loading nut, nut outside dress valve rod and the multistage valve rod formed.
3. the multistage valve rod of a kind of usefulness according to claim 2 is realized without hindrance self-seal device, it is characterized in that, the first order of described multistage valve rod is that the Stem Mut of central shaft valve rod is a closely-pitched, and second level Stem Mut is a coarse thread, and third level valve rod is a bull tooth distance.
4. the multistage valve rod of a kind of usefulness according to claim 1 is realized without hindrance self-seal device, it is characterized in that, it is to be made of welded connection that described handle shaft and valve gap are formed self-seal device.
5. realize without hindrance self-seal device according to claim 1 or the multistage valve rod of 4 described a kind of usefulness, it is characterized in that the spring on described handle shaft top is fixed with nut, and the handle shaft top also is provided with handle or handwheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201885187U CN201582486U (en) | 2009-08-07 | 2009-08-07 | Undamped self-sealing device realized by multi-stage valve rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201885187U CN201582486U (en) | 2009-08-07 | 2009-08-07 | Undamped self-sealing device realized by multi-stage valve rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201582486U true CN201582486U (en) | 2010-09-15 |
Family
ID=42724485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201885187U Expired - Fee Related CN201582486U (en) | 2009-08-07 | 2009-08-07 | Undamped self-sealing device realized by multi-stage valve rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201582486U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277528A (en) * | 2013-06-05 | 2013-09-04 | 温州市捷宇阀门制造有限公司 | Low-torque quick-opening gate valve stem structure |
-
2009
- 2009-08-07 CN CN2009201885187U patent/CN201582486U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277528A (en) * | 2013-06-05 | 2013-09-04 | 温州市捷宇阀门制造有限公司 | Low-torque quick-opening gate valve stem structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104913080B (en) | Ball valve is pressurized without abrasion | |
| CN201141445Y (en) | Bidirectional hard-sealing non-abrasion rail butterfly valve | |
| CN202280884U (en) | Stop-check valve | |
| CN201582486U (en) | Undamped self-sealing device realized by multi-stage valve rod | |
| CN201621307U (en) | Non-rising stem butterfly knife gate valve | |
| CN101988602A (en) | Application for realizing unobstructed self-sealing device by using multi-stage valve rod | |
| CN204437296U (en) | Embedded forging Y type is without bonnet stop valve | |
| CN208816703U (en) | A kind of double plate double-valve-seat bidirectional metals or the butterfly valve of nonmetallic sealing | |
| CN111237499B (en) | Intelligent ceramic valve | |
| CN202209430U (en) | Hydraulic control switch valve | |
| CN201071938Y (en) | Dual-purpose valve | |
| CN104373606A (en) | Elastic stop valve and operation method thereof | |
| CN208268448U (en) | A kind of flat gate valve of cavitation prevention | |
| CN203131081U (en) | High-tightness flat gate valve | |
| CN104976369A (en) | Soft-seal non-rising stem discharge valve | |
| CN2906237Y (en) | Double-sealing parallel gate valve | |
| CN209622120U (en) | A kind of four-way reversing globe valve | |
| CN209725332U (en) | A kind of cut-off two purpose valve | |
| CN209100689U (en) | A kind of deformation spherical surface eccentric valve | |
| CN204900902U (en) | Dark pole baiting valve of soft seal | |
| CN201502730U (en) | Cock-type mud valve | |
| CN207297967U (en) | A kind of adjustable copper valve of double fluid | |
| CN201902573U (en) | Multipurpose eccentric soft-hard seal wafer-type butterfly valve | |
| CN108413056A (en) | A kind of flat gate valve of cavitation prevention | |
| CN205841823U (en) | A kind of pottery steam valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| DD01 | Delivery of document by public notice |
Addressee: Shi Ming Document name: Approval notice for cost mitigation |
|
| DD01 | Delivery of document by public notice |
Addressee: Shi Ming Document name: Notification of Passing Examination on Formalities |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Shi Ming Document name: Notification to Pay the Fees |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100915 Termination date: 20110807 |