CN1007081B - Eccentric valve - Google Patents
Eccentric valveInfo
- Publication number
- CN1007081B CN1007081B CN 87103337 CN87103337A CN1007081B CN 1007081 B CN1007081 B CN 1007081B CN 87103337 CN87103337 CN 87103337 CN 87103337 A CN87103337 A CN 87103337A CN 1007081 B CN1007081 B CN 1007081B
- Authority
- CN
- China
- Prior art keywords
- valve
- spool
- sealing surface
- seat
- sealing
- 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
Links
- 238000007789 sealing Methods 0.000 claims abstract description 41
- 239000012530 fluid Substances 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 4
- 230000002457 bidirectional effect Effects 0.000 description 3
- 206010033307 Overweight Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000008041 oiling agent Substances 0.000 description 1
- 235000020825 overweight Nutrition 0.000 description 1
- 210000004722 stifle Anatomy 0.000 description 1
Images
Landscapes
- Mechanically-Actuated Valves (AREA)
- Sliding Valves (AREA)
- Multiple-Way Valves (AREA)
Abstract
The eccentric valve mainly comprises a valve body (1), a valve core (4), a valve cover (7) and rotary shafts (3, 9). The valve is divided into a one-way valve and a two-way valve, and belongs to single-side sealing, a valve core (4) is fixed on a valve body (1) and a valve cover (7) through bearings (2 and 8) and can rotate in the valve body, and the rotating angle of the valve core is 0-90 degrees under normal conditions. When the channel where the valve core (4) is screwed is concentric with the valve, the valve core is in a full-open state, and the pressure drop is minimum. Rotation axis O of valve core and rotation axis O of valve seat sealing surface1Or O2The sealing pair at the outlet end is not concentric, and the sealing pair is not contacted or matched only in the closed state, and the sealing pair is not contacted in the rest whole movement, so that no friction phenomenon occurs between the sealing surfaces.
Description
The present invention is a kind of valve that is used for fluid control.
The quality of valve seal and the size of pressure drop are distinguished two essential conditions of valve quality often, and determine the key factor of valve seal and pressure drop, but are the mutual motion modes of spool and valve seat.
The spool of stop valve is done vertical motion to valve seat, and its sealing surface wear is just lighter, also be difficult for leaking, but pressure drop is bigger; The sealing surface of ball valve is turning surface (sphere), and its turning axle overlaps with the turning axle of spool (spheroid), and the turning radius equates again, so when opening and closing, spool just is close to valve seat and is made circumferential slippage; The spool of gate valve is close to valve seat and is done horizontal slip.Wearing and tearing between this two classes valve sealing face are all compared seriously, also leak easily, and advantage is that pressure drop is very little.
The objective of the invention is to maximize favourable factors and minimize unfavourable ones, a kind of fluid control valve-eccentric valve that has improved is provided, it has premium properties such as simple in structure, that pressure drop is little, light abrasion and life-span are long.
The present invention be achieved in that this valve mainly by valve body, valve seat, valve gap, spool and revolve the axle form.The sealing surface of valve seat is turning surface (sphere or cylndrical surface).Spool can rotate in valve body, and turning axle hangs down and overweights the meson flow direction.Respectively install one at the two ends up and down of its rotational axis and revolve axle.By bearing spool is fixed on valve gap and the valve body.On revolve the outside that shaft extension goes out valve gap and be connected with drive unit.But this axle center of revolving axle can be positioned on the axis of valve also off-axis certain distance.Boss is arranged on the spool, and it protrudes in spool and matches with sealing surface of seat, and the revolution of the sealing surface of this boss (outer surface) and sealing surface of seat is just closed the footpath and equated, in the time of in off position, it two fits like a glove.But the sealing surface of boss and its support spool but are also Different Diameter of decentraction.The above three turning axle is all perpendicular to same plane.In this plane, upwards there is certain distance in the revolution axle center of sealing surface of seat and the revolution axle center of spool in the footpath of valve, the side when revolution axle center of sealing surface of seat is positioned at boss with matching and is in opening state, spool revolution axle center is to the distance between the intersection of this plane and sealing surface of seat, by end to end is a variable that increases progressively (subtracting), like this, just contact or identical fully of outlet end two sealing surfaces when valve only is in closed condition, these two sealing surfaces are discontiguous in remaining keying motion, so just there is not the phenomenon of friction to take place between sealing surface.Entry end does not all have friction and takes place no matter have or not seal arrangement.One passage is arranged in the spool, and this passage is concentric with valve seat when valve is in full-gear, so fluid is unimpeded, pressure drop is less.
Drive unit by on revolve the axle can make the spool left rotation and right rotation, so as to opening/shutting valve, its angle of swing under normal circumstances be 0～90 the degree.
Analyze from mechanics, when the turning axle of spool is positioned on the axis of valve, needs to give and revolve the certain torsion of axle and can reach sealing effect, belong to the single face forced seal; When the revolution axle center of spool was positioned at a side of valve axis, borrowing the pressure of medium was to reach sealing effect, belongs to single face from motive sealing.
If described spool be fixed on revolves on the axle, and an outlet end has seal arrangement, meaning one-way eccentric valve; If described spool is in that revolve on the axle can play (or floating), and all there are seal arrangement, meaning bidirectional eccentric valve in the two ends, gateway.
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1 is the structural drawing of a kind of one-way eccentric valve of the present invention.
Fig. 2 is the sectional view of Fig. 1.
As shown in Figure 1, the one-way eccentric valve is mainly by valve body (1), valve seat (6), spool (4), the valve gap (7) of sufficient intensity and toughness with revolve axle (3,9) and form.Spool (4) is separately fixed on valve body (1) and the valve gap (7) with bearing (2,8) by fixing revolve spool (3,9) on it.Revolve axle (9) and expose by stuffing box packing (10), be connected with drive unit (not drawing among the figure), this spool can rotate in valve body by drive unit, and its angle of swing under normal circumstances is between 0～90 degree.Valve gap (7) uses bolton on valve body (1), and stuffing box packing (11) is arranged in case leak.Sealing surface between the boss (5) on valve seat (6) and the spool all is a turning surface, and their turning radius equates that in the time of in off position, two axle center coincide with O
1Point, the two sealing surfaces (see figure 2) that matches.The revolution axle center O of spool (4) is positioned at O
1Downside, spool has a passage in (4), it can be isometrical with valve seat, because spool that should example revolution axle center O departs from the axis of valve, so that the pressure of reliable medium reaches this meaning of effect (scheme right arrow show MEDIA FLOW to) of sealing is unidirectional from motive sealing; If the revolution axle center O of spool is positioned on the axis of valve, that is only executed and revolves axle one enough torsion and can seal, and this calls unidirectional forced seal (picture).
When drive unit by revolving axle (9) in the direction of the clock during rotary spool (4), the meaning opening movement is fixed boss (5) on it when circumference turns clockwise, and has also just left the valve seat front cover; Continue to rotate to passage in the spool and concentric the time, be the full-gear (shown in the dotted line of Fig. 2) of valve with valve, then be closing movement when being rotated counterclockwise, boss (5) is when circumference is rotated counterclockwise, also just near sealing surface of seat; When continuing to rotate to two sealing surfaces and coincideing, be the closed condition of valve.
Revolving axle (3) is to be in closed state in this example, an outlet can be opened in its lower end, other establishes a stifle (not drawing among the figure) with anti-leak, this sample is in maintenance, in order to improve lubrication effect, can in the middle of bearing and spool, establish separator (not drawing among the figure), in case medium and oiling agent soak into mutually.
Fig. 3 is the structure chart of a kind of bidirectional eccentric valve of the present invention.
Fig. 4 is the cutaway view of Fig. 3.
Shown in Fig. 3,4, bidirectional eccentric valve and one-way eccentric valve are basic identical, and difference is that the two ends, gateway (scheme right arrow show MEDIA FLOW to) of this valve all have sealing device (comprise 5,6 and 5 ', 6 '); Spool valve axially on can play, the revolution axle center of spool (4) is positioned on the axis of valve, valve seat (6) and (6) they are as rotational symmetric take the spool gyroaxis. In the plane perpendicular to gyroaxis, the revolution axle center O of sealing surface of seat1Or O2Upwards with the axis of valve certain distance is arranged in the footpath of valve, it could contact when making the sealing surface of the port of export only have in off position or coincide, and does not all contact in moving and open and close at remaining, does not therefore also just have the phenomenon generation that rubs; Axle center O1With O2Between be the shifting amount of spool (4) in valve body (1) in the distance that valve shaft makes progress. Arrival end in off position the time distance between two sealing surfaces just equal this amount of altering, it makes this two sealing surface avoid contact, thereby is in idle state. Spool (4) is not fastened on the spin axis (3,9), but is installed on the spin axis by square groove (12,13). Spool (4) to spin axis (3,9) only accurate valve axially on play, and forbidden to have relative rotation. When meson flowed to right-hand member from left end, spool (4) just moved (or play) to the right, and this moment, the right-hand member sealing device was just started working, left end then be in idle state.
Other device and keying motion and precedent are omitted together.
Claims (4)
1, a kind of valve that is used for fluid control, mainly by valve body (1), valve seat (6 or 6 '), the spool (4) of sufficient intensity and toughness with revolve spool (3,9) and form, wherein sealing surface of seat and spool revolves a decentraction, is alternation to the intersection distance perpendicular to face that revolves axle and sealing surface of seat by end to end from revolving a center, it is characterized in that the sealing surface on the spool (4) is a boss (5 or 5 '), this boss sealing surface and its support spool, i.e. also Different Diameter of decentraction.
2, by the described valve of claim 1, the turning radius that it is characterized in that the sealing surface (outer surface) of boss (5 or 5 ') equates with the turning radius of sealing surface of seat, and the boss that is in outlet end only just contact with the valve seat front cover when valve is in closed condition or be identical.
3, by the described valve of claim 1, it is characterized in that spool (4) respectively installs one and revolve axle (3,9) in two ends up and down, it can be fastening on it, also can be loaded in the square groove (12,13).
4, by the described valve of claim 1, it is characterized in that revolving axle (3,9) and be fixed on valve body (1) and the valve gap (7) by bearing (2,8), revolve axle (9) and expose by stuffing box packing (10), be connected with drive unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87103337 CN1007081B (en) | 1987-04-28 | 1987-04-28 | Eccentric valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87103337 CN1007081B (en) | 1987-04-28 | 1987-04-28 | Eccentric valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN87103337A CN87103337A (en) | 1988-03-09 |
| CN1007081B true CN1007081B (en) | 1990-03-07 |
Family
ID=4814392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87103337 Expired CN1007081B (en) | 1987-04-28 | 1987-04-28 | Eccentric valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1007081B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201713435D0 (en) | 2017-08-22 | 2017-10-04 | Cummins Ltd | Valve |
| CN111434958A (en) * | 2019-01-14 | 2020-07-21 | 伊利诺斯工具制品有限公司 | Multi-channel valve |
| CN113028093B (en) * | 2021-03-29 | 2023-06-13 | 金昌道 | An eccentric valve and its application system |
-
1987
- 1987-04-28 CN CN 87103337 patent/CN1007081B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN87103337A (en) | 1988-03-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| CI01 | Publication of corrected invention patent application |
Correct: Huo Jianchen False: Huo Jianzhen Number: 10 Page: 36 Volume: 4 |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| ERR | Gazette correction |
Free format text: CORRECT FROM: HUO JIANZHEN TO: HUO JIANCHEN |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |