CA1280396C - Straightway- and shut-off valve - Google Patents
Straightway- and shut-off valveInfo
- Publication number
- CA1280396C CA1280396C CA000504082A CA504082A CA1280396C CA 1280396 C CA1280396 C CA 1280396C CA 000504082 A CA000504082 A CA 000504082A CA 504082 A CA504082 A CA 504082A CA 1280396 C CA1280396 C CA 1280396C
- Authority
- CA
- Canada
- Prior art keywords
- passages
- discs
- valve
- disc
- 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 - Lifetime
Links
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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/04—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members
- F16K3/06—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages
- F16K3/08—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages with circular plates rotatable around their centres
-
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/04—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members
- F16K3/06—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages
- F16K3/08—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages with circular plates rotatable around their centres
- F16K3/085—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages with circular plates rotatable around their centres the axis of supply passage and the axis of discharge passage being coaxial and parallel to the axis of rotation of the plates
Abstract
Abstract Straight-way and Stop Valve The invention provides a straight-way and stop valve with at least three identical discs con-taining passages and acting as sealing and control elements, wherein the two outer discs are stationary while the central one is movable, and wherein the discs have sealing surfaces; in the closed state of the valve the sealing surface or surfaces of the central disc interact with the sealing surface or surfaces of one outer disc, while the passage or passages in the central disc simultaneously remain connected to the passage or passages in the other outer disc.
Description
3~6 The invention relates to a straight-way and stop valve with at least three identical discs containing passages and acting as sealing and control elements, wherein the two outer discs are stationary while the '-central one is movable, and wherein the discs have sealing surfaces.
The disadvantage of known valves of this type is that, when the temperature rises, the fluid which in ,' the closed position is trapped in the passages in the central disc may axpand so much that the discs may be lifted off one another. This danger exists because identical passages and therefore identical sealing ;, surfaces are used, and consequently the passages in the central disc are closed on both sides by the web- ' shaped sealing surfaces of the outer discs in the closed position. A further disadvantage of such con-structions is that the passages cause the flow to be released on entering the pack of discs and thus lead to increased resistance to flow. This construction also has the drawback that in the throttled position at the dischaxge side the fluid flows into the pipe at high speed and with high angular momentum.
The problem underlying the invention is to avoid these disadvantages and to provide a straight-way and stop valve of the above type which is simple in con-struction and reliable in operation.
This aim is achieved, in that in the closed state ~2~3~3~i of the valve the sealing surface or surfaces of the central disc interact with the sealing surface or sur-faces of one outer disc, while the passage or passages in the central disc simultaneously remain connected to the passage or passages in the other outer disc.
The invention ensures that when the fitment is closed fluid can no longer be trapped in the passages in the central disc and thus between the outer discs.
In a preEerred embodiment of the invention the passages in the discs are respective~y widened or tapered from one side to the other, and the tapered sides of the passages can be blocked by the sealing surfaces interrupted by the tapered sides of the pass- i ages, while the sealing surfaces interrupted by the 1, widened sides of the passages are reduced so that they '.
do not cover the tapered or widened sides of the pass-ages. In accordance with the inYention the discs are accordingly arranged relative to one another so that the passages in the first outer disc taper in the direction of flow, thereby as far as possible avoiding a release of flow at the inlet and obtaining a consider-able reduction in the resistance to flow. ~ith this arrangement and the appropriate direction of flow thro~ling takes place substantially between the first two discs with the valve partly open, and the fl~w leaves the movable disc at a considerably reduced speed, because the gap between the movable disc and .
- ., the second, outer disc is larger in the throttl~d position. The angular momentum of the flow i5 also reduced thereby.
A further preferred embodiment is characterised in the claims.
Two examples of;the invention are illustrated in the accompanying drawings, in which:
Fig. 1 shows a straight-way and stop valve in a longitudinal section taken along the line A-A in Fig. 2, ~`
Fig. 2 is a cross-section of the valve, Fig. 3 is a plan view of the discs with the ~, widened sides of the passages, along the line B-B in Fig. 1, Fig. 4 is a section along the portion of a circle B in Fig. 3 with the valve in the closed position, Fig. 5 is a section similar to Fig. 4 but with the valve in the open position, Fig. 6 shows a different embodiment of the discs, in a longitudinal section taken alony the line C-C in Fig. 7, and ' Fig. 7 is a plan view of thedisc pack in Fig. 6.
Figures l and 2 show a valve casing which has two connecting pieces 8 and 9 for a pipe and a central por-tion 10 containing ~he control elements. The control elements can be seen to comprise three discs 11, 12 and ~2~3~i 13, of which the central one 12 is rotatable. The discs ll, 12 and 13 are preferably made of ceramics and are applied directly and tightly to one another.
The two stationary outer dlscs 11 and 13 are pressed by the sealing rings 14 against the movable disc 12, which is ~ounted in matching recesses in the stationary discs 11 and 13 by means of journals 15. The discs 11, 12 and 13 are provided with passages 16.
It will further be seen that the movable disc 12 is connected to an actuating member 17; this has an annular portion 18 extending right round the movable disc 12 and is thus radially secured~ The disc 12 1¦
has lugs 19 engaging in grooves 20 in the annular portion 18 of the actuating member 17 and is positively connected to the member 17 only in respect of the turning moment.
The annular portion 18 is accommodated in a space in the valve casing formed by a groove 21, while the lever-shaped part of the actuating member 17 projects outwardly through a longitudinal slot 22 in the casing.
In the space 21 there are bearing rings 23 in the form of spring washers; these exert a resilient pressure on the annular part 18 of the actuating member 17 in an axial direction, thereby absorbing transverse forces.
The discs 11, 12 and 13 are identical (see Figs.
3 to 7). In accordance with the invention they are constructed and arranged so that when the valve is in the closed position the sealing surfaces 24 of the , -~213~
movable disc 12 interact with the sealing surfaces 25 of one outer disc 11, while the passages in the central disc 12 simultaneously remain connected to the passages in the other outer disc 13.
In the first embodiment shown in Figs. 3 to 5 the passages 16 in the discs 11, 12 and 13 are widened or tapered from one side to the other. The passages 16 through the disc 11 can be blocked at their tapered sides by the sealing surfaces 24, 25, while the seal-ing surfaces 26, 27 at the wide-passage sida of the discs are reduced, so that they can only partly cover the tapered or widened sides of the passages 16.
In the embodiment shown in Figs. 6 and 7 the discs 11, 12 and 13 have a continuous sealing surface 28, 32 , on one side. On the other side they havs a protrud-ing sealing surface 29 which surrounds the passages 16 in the outer section of the discs 11, 12 and 13 and which is in the same plane as a central bearing surface 30, while the web surfaces 31 are set back from that plane.
In accordance with the invention it is impossible -for the fluid to be trapped between the two outer discs 11 and 13.
The valve is not difficult to manufactur~.
Assembly is very easy. The valve is suitable e.g. for pipes conducting water or oil to machines which become heated while running and heat up the pipe system as 3~
well. ~t also avoids trapping gasses under pressure, which would cause the discs to open outwards acciden-tally (lifting of the disc~ when the pipes are vented The embodiments described and illustrated are only examples of the invention; the invention is not restricted to them, and there are other possibilities within the framework of the basic idea o~ the inven-tion, particularly in respect of the construction and arrangement of the discs.
The disadvantage of known valves of this type is that, when the temperature rises, the fluid which in ,' the closed position is trapped in the passages in the central disc may axpand so much that the discs may be lifted off one another. This danger exists because identical passages and therefore identical sealing ;, surfaces are used, and consequently the passages in the central disc are closed on both sides by the web- ' shaped sealing surfaces of the outer discs in the closed position. A further disadvantage of such con-structions is that the passages cause the flow to be released on entering the pack of discs and thus lead to increased resistance to flow. This construction also has the drawback that in the throttled position at the dischaxge side the fluid flows into the pipe at high speed and with high angular momentum.
The problem underlying the invention is to avoid these disadvantages and to provide a straight-way and stop valve of the above type which is simple in con-struction and reliable in operation.
This aim is achieved, in that in the closed state ~2~3~3~i of the valve the sealing surface or surfaces of the central disc interact with the sealing surface or sur-faces of one outer disc, while the passage or passages in the central disc simultaneously remain connected to the passage or passages in the other outer disc.
The invention ensures that when the fitment is closed fluid can no longer be trapped in the passages in the central disc and thus between the outer discs.
In a preEerred embodiment of the invention the passages in the discs are respective~y widened or tapered from one side to the other, and the tapered sides of the passages can be blocked by the sealing surfaces interrupted by the tapered sides of the pass- i ages, while the sealing surfaces interrupted by the 1, widened sides of the passages are reduced so that they '.
do not cover the tapered or widened sides of the pass-ages. In accordance with the inYention the discs are accordingly arranged relative to one another so that the passages in the first outer disc taper in the direction of flow, thereby as far as possible avoiding a release of flow at the inlet and obtaining a consider-able reduction in the resistance to flow. ~ith this arrangement and the appropriate direction of flow thro~ling takes place substantially between the first two discs with the valve partly open, and the fl~w leaves the movable disc at a considerably reduced speed, because the gap between the movable disc and .
- ., the second, outer disc is larger in the throttl~d position. The angular momentum of the flow i5 also reduced thereby.
A further preferred embodiment is characterised in the claims.
Two examples of;the invention are illustrated in the accompanying drawings, in which:
Fig. 1 shows a straight-way and stop valve in a longitudinal section taken along the line A-A in Fig. 2, ~`
Fig. 2 is a cross-section of the valve, Fig. 3 is a plan view of the discs with the ~, widened sides of the passages, along the line B-B in Fig. 1, Fig. 4 is a section along the portion of a circle B in Fig. 3 with the valve in the closed position, Fig. 5 is a section similar to Fig. 4 but with the valve in the open position, Fig. 6 shows a different embodiment of the discs, in a longitudinal section taken alony the line C-C in Fig. 7, and ' Fig. 7 is a plan view of thedisc pack in Fig. 6.
Figures l and 2 show a valve casing which has two connecting pieces 8 and 9 for a pipe and a central por-tion 10 containing ~he control elements. The control elements can be seen to comprise three discs 11, 12 and ~2~3~i 13, of which the central one 12 is rotatable. The discs ll, 12 and 13 are preferably made of ceramics and are applied directly and tightly to one another.
The two stationary outer dlscs 11 and 13 are pressed by the sealing rings 14 against the movable disc 12, which is ~ounted in matching recesses in the stationary discs 11 and 13 by means of journals 15. The discs 11, 12 and 13 are provided with passages 16.
It will further be seen that the movable disc 12 is connected to an actuating member 17; this has an annular portion 18 extending right round the movable disc 12 and is thus radially secured~ The disc 12 1¦
has lugs 19 engaging in grooves 20 in the annular portion 18 of the actuating member 17 and is positively connected to the member 17 only in respect of the turning moment.
The annular portion 18 is accommodated in a space in the valve casing formed by a groove 21, while the lever-shaped part of the actuating member 17 projects outwardly through a longitudinal slot 22 in the casing.
In the space 21 there are bearing rings 23 in the form of spring washers; these exert a resilient pressure on the annular part 18 of the actuating member 17 in an axial direction, thereby absorbing transverse forces.
The discs 11, 12 and 13 are identical (see Figs.
3 to 7). In accordance with the invention they are constructed and arranged so that when the valve is in the closed position the sealing surfaces 24 of the , -~213~
movable disc 12 interact with the sealing surfaces 25 of one outer disc 11, while the passages in the central disc 12 simultaneously remain connected to the passages in the other outer disc 13.
In the first embodiment shown in Figs. 3 to 5 the passages 16 in the discs 11, 12 and 13 are widened or tapered from one side to the other. The passages 16 through the disc 11 can be blocked at their tapered sides by the sealing surfaces 24, 25, while the seal-ing surfaces 26, 27 at the wide-passage sida of the discs are reduced, so that they can only partly cover the tapered or widened sides of the passages 16.
In the embodiment shown in Figs. 6 and 7 the discs 11, 12 and 13 have a continuous sealing surface 28, 32 , on one side. On the other side they havs a protrud-ing sealing surface 29 which surrounds the passages 16 in the outer section of the discs 11, 12 and 13 and which is in the same plane as a central bearing surface 30, while the web surfaces 31 are set back from that plane.
In accordance with the invention it is impossible -for the fluid to be trapped between the two outer discs 11 and 13.
The valve is not difficult to manufactur~.
Assembly is very easy. The valve is suitable e.g. for pipes conducting water or oil to machines which become heated while running and heat up the pipe system as 3~
well. ~t also avoids trapping gasses under pressure, which would cause the discs to open outwards acciden-tally (lifting of the disc~ when the pipes are vented The embodiments described and illustrated are only examples of the invention; the invention is not restricted to them, and there are other possibilities within the framework of the basic idea o~ the inven-tion, particularly in respect of the construction and arrangement of the discs.
Claims (3)
1. A straight-way and stop valve with at least three identical discs containing passages and acting as sealing and control elements, wherein the two outer discs are stationary and the central one is movable, and wherein the discs have sealing surfaces, charac-terised in that in the closed state of the valve the sealing surface or surfaces (24,28) of the central disc (12) interact with the sealing surface or surfaces (25,32) of one outer disc 111), while the passage or passages (16) in the central disc (12) simultaneously remain connected to the passage or passages (16) in the other outer disc (13).
2. The valve of claim 1, characterised in that the passage or passages (16) in the discs (11,12,13) are respectively widened or tapered from one side to the other, and the tapered sides of the passages (16) can be blocked by the sealing surfaces (24,28) interrupted by those sides, while the sealing surfaces (26,27,29) interrupted by the widened sides of the passages are reduced so that they do not cover the tapered or widened sides of the passages (16).
3. The valve of claim 1 or 2, characterised in that the discs (11,12,13) have a continuous sealing surface (28,32) on one side, while on the other side they have a sealing surface (29) which surrounds the passage or passages (16) in the outer section of the discs (11,12, 13), and that the part of the discs containing the passage or passages (16) is set back from the sealing surface (29) on the latter side.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19853509973 DE3509973A1 (en) | 1985-03-20 | 1985-03-20 | 2-WAY AND SHUT-OFF VALVE |
| DEP3509973.9 | 1985-03-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1280396C true CA1280396C (en) | 1991-02-19 |
Family
ID=6265738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000504082A Expired - Lifetime CA1280396C (en) | 1985-03-20 | 1986-03-14 | Straightway- and shut-off valve |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0195178B1 (en) |
| JP (1) | JPS61218870A (en) |
| KR (1) | KR920007226B1 (en) |
| AT (1) | ATE39016T1 (en) |
| CA (1) | CA1280396C (en) |
| CH (1) | CH669246A5 (en) |
| DE (2) | DE3509973A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990009537A1 (en) * | 1989-02-15 | 1990-08-23 | Ideal-Standard Gmbh | Main shut-off valve |
| AT402416B (en) * | 1994-12-02 | 1997-05-26 | Ideal Standard | FLOW THROTTLE |
| CN1116539C (en) * | 1999-06-28 | 2003-07-30 | 周海鹏 | Safety valve |
| CN1336501A (en) * | 2000-08-07 | 2002-02-20 | 崔荀 | Optimized ceramic valve core structure |
| RU191912U1 (en) * | 2019-04-12 | 2019-08-28 | Открытое акционерное общество "КБ Электроприбор" | CONTROL VALVE |
| RU2746682C1 (en) * | 2019-11-28 | 2021-04-19 | Российская Федерация, от имени которой выступает Министерство обороны Российской Федерации | Hot gas flow controller |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2161194A5 (en) * | 1971-11-17 | 1973-07-06 | Guinard Pompes | |
| US4452278A (en) * | 1982-09-30 | 1984-06-05 | Fetterolf Corporation | Spectacle line blind with vent |
| DE3309545A1 (en) * | 1983-03-17 | 1984-09-20 | Ideal-Standard Gmbh, 5300 Bonn | 2-WAY VALVE |
-
1985
- 1985-03-20 DE DE19853509973 patent/DE3509973A1/en not_active Withdrawn
-
1986
- 1986-01-09 DE DE8686100221T patent/DE3661331D1/en not_active Expired
- 1986-01-09 AT AT86100221T patent/ATE39016T1/en not_active IP Right Cessation
- 1986-01-09 EP EP86100221A patent/EP0195178B1/en not_active Expired
- 1986-01-30 CH CH385/86A patent/CH669246A5/en not_active IP Right Cessation
- 1986-03-14 CA CA000504082A patent/CA1280396C/en not_active Expired - Lifetime
- 1986-03-19 KR KR1019860002041A patent/KR920007226B1/en not_active IP Right Cessation
- 1986-03-20 JP JP61061043A patent/JPS61218870A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| EP0195178B1 (en) | 1988-11-30 |
| JPH0240149B2 (en) | 1990-09-10 |
| CH669246A5 (en) | 1989-02-28 |
| EP0195178A2 (en) | 1986-09-24 |
| EP0195178A3 (en) | 1987-03-11 |
| DE3661331D1 (en) | 1989-01-05 |
| KR860007497A (en) | 1986-10-13 |
| KR920007226B1 (en) | 1992-08-28 |
| ATE39016T1 (en) | 1988-12-15 |
| DE3509973A1 (en) | 1986-09-25 |
| JPS61218870A (en) | 1986-09-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |