CN1356486A - Design principle 'sequential close' for valves of light or gas delivering pipeline - Google Patents
Design principle 'sequential close' for valves of light or gas delivering pipeline Download PDFInfo
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- CN1356486A CN1356486A CN 02113208 CN02113208A CN1356486A CN 1356486 A CN1356486 A CN 1356486A CN 02113208 CN02113208 CN 02113208 CN 02113208 A CN02113208 A CN 02113208A CN 1356486 A CN1356486 A CN 1356486A
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- sealing
- valve rod
- hollow valve
- hole
- driving mechanism
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Abstract
A "forward sealing" design principle for valves of liquid or gas delivering pipeline features that the pressure of liquid or gas itself and the spring force are used to realize the sealing of valve. Its sealing surface is at the entrance of gas or liquid channel in valve. The sealing part sleeves the extended end of hollow valve rod. Its advantages include simple structure, high sealing performance and long service life.
Description
Patent of the present invention relates to the sealing principle of the various valves in the liquid letter shoot road.
The various valves that use in the existing liquid letter shoot road, all by following principle design: the outlet port at valve inner liquid gas passage makes sealing surface, uses the mode of " blocking up " to seal, and this sealing principle can be referred to as " contrary envelope ".
Under the prerequisite of " contrary envelope ", exist liquid gas all the time and wash the trend of sealing open with self pressure, that is liquid gas pressure power with seal between be in the state of contradiction and antagonism, this has just strengthened the difficulty of design of Sealing Structure and manufacturing.Simultaneously,, just will inevitably realize that like this, the wearing and tearing between sealing surface are that inevitably this will influence the working life of valve in modes such as rotatablely moving between sealing surface, screw propulsion motions for flow and the break-make of regulating and control liquid gas.
In order to overcome the shortcoming by the various valves of " contrary envelope " principle design, patent of the present invention proposes " along envelope " design principle and typical structure of various valves in the liquid letter shoot road.
The principle of patent of the present invention is: the ingress at valve inner liquid gas passage makes the plane or conical sealing surface, adopt the end to have the hollow valve rod of five equilibrium groove as liquid gas passage, and will be fixed on the entrance point of hollow valve rod with the Sealing that above-mentioned sealing surface matches, constitute the forward basic structure of sealing, i.e. " along envelope " structure.Obviously, under the prerequisite of " along envelope ", liquid gas pressure power has become to help the factor of sealing, and liquid gas pressure power is big more, and the effect of sealing is good more.At this moment, only need to use various forms of mechanisms, promote hollow valve rod along its axis moving linearly, get final product Open valve, liquid gas passes through fast from hollow valve rod.And the motion of reverse throttle down can lean on liquid gas pressure power and secondary spring to finish fully.
The principle and the typical structure of patent of the present invention are described below in conjunction with accompanying drawing.
Figure one is " along envelope " principle schematic.
Figure two is the throughway valve structural drawing by " along envelope " principle design.
Figure three to figure five is the various embodiments of " along envelope " valve.
Among the figure one, 1-press and follow closely 2-rubber sealing boot, 3-valve body, 4-hollow valve rod, 5-stage clip.As can be seen from the figure, stage clip (5) is enclosed within on the cylindrical of hollow valve rod (4), from the through hole of valve body (3), stretch out, with pressing nail (1) that rubber sealing boot (2) is pressed into hollow valve rod (4) fluting end, promptly constituted the forward citation form of sealing again to liquid gas entrance point.Obviously, under the prerequisite of " along envelope ", liquid gas pressure power acts on the rubber sealing boot (2) by pressing nail (1), adds the pressure of stage clip (5), can reach the effect of sealing.And liquid gas pressure power is big more, and the effect of sealing is just good more, so just can reduce the accuracy of manufacturing of the sealing surface of " along envelope ", thereby reduces the cost of production of sequence-closing valve.Simultaneously, the linear reciprocating motion wear extent that hollow valve rod (4) is done in the hole of valve body (3) is less, and its wearing and tearing do not exert an influence to the sealing effect of valve.
" along envelope " formula throughway valve shown in the figure two has just designed the rotating shaft that bottom that an energy rotates has the cylinder that edges up in upright opening, the cylinder that edges up when it rotates promotes hollow valve rod and moves to left, valve promptly is unlocked, and backward rotation is during to position shown in the figure two, and valve promptly is closed.The formula throughway valve is simple, and good sealing effect than " contrary envelope " for this structure, and inside does not have connecting thread, so the life-span is longer, and accuracy of manufacturing is less demanding, and cost of production is low, should be with a wide range of applications.
Figure three to figure five is the various embodiments of " along envelope " valve.
Figure three is the right angle sequence-closing valve that promotes with trapezoidal screw.
Figure four is the straight-through sequence-closing valve that promotes with taper pin.
Figure five is " T shape " sequence-closing valve that promotes with the inclined-plane.
Claims (4)
1, " along envelope " formula design principle of various valves in a kind of liquid letter shoot road, structural feature is that its black box (hollow valve rod, rubber sealing boot, pressure nail etc.) is preposition in valve body, and the control mechanism of valve (the cylinder driving mechanism that edges up, trapezoidal thread driving mechanism, conical surface driving mechanism, inclined-plane driving mechanism etc.) is rearmounted.It is characterized in that: the through hole of valve body (3) is a step hole, and aperture is preceding, macropore after, big bore dia is 1.2～2 times of hole diameter, and makes ring plain or conical sealing surface in the aperture ingress, the drift angle of its conical surface is 60 °～150 °.
2, sealing configuration as claimed in claim 1 is characterized in that: hollow valve rod (4) has a through hole with the shaft coaxial line, and hollow valve rod (4) back segment diameter is 1.2～2 times of shaft diameter, and its leading portion has 2～4 five equilibrium grooves.
3, sealing configuration as claimed in claim 1 is characterized in that: stage clip (5) is enclosed within on the shaft of hollow valve rod (4), and hollow valve rod (4) from the through hole of valve body (3) from after insert forward.
4, sealing configuration as claimed in claim 1, it is characterized in that:, utilize the type conical bench of its front end and the endoporus step of hollow valve rod (4) that rubber sealing boot (2) is fixed on hollow valve rod (4) front end with pressing nail (1) from the hole of rubber sealing boot (2) (or other gravity die sealing material), to pass.The sealing surface of its rubber sealing boot (2) should be corresponding with the sealing surface of valve body (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02113208 CN1356486A (en) | 2002-01-08 | 2002-01-08 | Design principle 'sequential close' for valves of light or gas delivering pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02113208 CN1356486A (en) | 2002-01-08 | 2002-01-08 | Design principle 'sequential close' for valves of light or gas delivering pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1356486A true CN1356486A (en) | 2002-07-03 |
Family
ID=4742506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02113208 Pending CN1356486A (en) | 2002-01-08 | 2002-01-08 | Design principle 'sequential close' for valves of light or gas delivering pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1356486A (en) |
-
2002
- 2002-01-08 CN CN 02113208 patent/CN1356486A/en active Pending
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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 | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |