WO2000015989A1 - Valve - Google Patents
Valve Download PDFInfo
- Publication number
- WO2000015989A1 WO2000015989A1 PCT/EP1999/006797 EP9906797W WO0015989A1 WO 2000015989 A1 WO2000015989 A1 WO 2000015989A1 EP 9906797 W EP9906797 W EP 9906797W WO 0015989 A1 WO0015989 A1 WO 0015989A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- valve body
- compressed air
- channel
- blow
- Prior art date
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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
Definitions
- the present invention relates to a valve or a valve device, in particular for use in a system for the explosive expansion of a solid / liquid gas mixture.
- the valve according to the invention which can be used in particular in a plant for the explosive expansion of a solid / liquid gas mixture, comprises a valve housing with a valve channel, a valve body which closes the valve channel in a closed position to close the valve, and in one Retraction position releases the valve channel to open the valve, the valve body executing a translational movement, and an actuating device which is translationally movable by means of a fluid, in particular compressed air, and is coupled to the valve body in order to remove the valve body from it when exposed to fluid Retreat position to be in its closed position to move the valve body from its closed position to its retracted position because of and / or when fluid is applied.
- the valve according to the invention opens the valve channel or product channel at high speed and in a correspondingly short time, typically within about 30 ms, as a result of which the product flow through the valve channel is prevented.
- the short opening times of the valve according to the invention avoid an undesired hindrance in the event of an explosive expansion of the product or solid / liquid gas mixture through the valve channel.
- the actuating device preferably has an actuating cylinder with a chamber and a separating piston which can be moved back and forth in the chamber by means of compressed air and is coupled to the valve body in order to transmit its movement to the valve body.
- valve body and the valve seat are preferably conical and are matched to one another in such a way that the conical valve body fits into the conical valve seat in a sealing position. This eliminates the need for special sealants and a self-adjusting seal is achieved. In addition, there is almost no friction when opening the valve in the conical piston or valve body.
- a blow-out device working with compressed air or nitrogen is preferably provided, which removes material residues, in particular in the case of fibrous materials, from the valve by blow-out, as a result of which the valve is self-cleaned.
- the valve body can be designed such that it closes a compressed air supply channel for blowing out when it is in its retracted position and releases the compressed air supply channel again so that material residues can be blown out when the valve body is in its closed position.
- the valve body then also serves as a valve for the compressed air supply.
- the blow-out device can have a blow-out valve which closes the compressed air supply duct when the pressure in the valve duct and / or in a valve body duct in which the valve body can be moved back and forth is higher than the pressure of the compressed air, and which the compressed air supply duct (18) releases to blow out material residues when the pressure in the valve channel and / or in the valve body channel becomes lower than the pressure of the compressed air.
- the valve body is preferably held in its closed position and / or in its retracted position by means of a force which is based on constantly present compressed air, as a result of which the sealing function of the valve body in its valve seat can be readjusted independently of temperature expansion and wear effects.
- FIG. 1 shows a sectional view through a preferred embodiment of the valve according to the invention, seen along the section line I-I of FIG. 2;
- Figure 2 is a side view of the valve housing of the embodiment of Figure 1, in Seen in the direction of arrow II of Figure 1;
- Figure 3 is a plan view of the valve housing of Figure 2, seen in the direction of arrow III of Figure 1;
- FIG. 4 shows a perspective view of the valve housing with a valve body in the closed position
- Figure 5 is a sectional view of a connecting part of the embodiment of Figure 1;
- Figure 6 is a side view of a valve body of the embodiment of Figure 1;
- FIG. 7 shows a sectional view of a ring hole nozzle of the embodiment in FIG. 1.
- valve device 1 to 3 show a preferred embodiment of the valve device according to the invention, which essentially comprises a valve housing 1, an actuating device with actuating cylinder 3 or pneumatic cylinder, a connecting part 2, which is arranged between the valve housing 1 and the actuating cylinder 3, a valve body 4 and has a blow-out device for removing material residues from the valve.
- the valve housing 1 (see also FIG. 4) is arranged, for example, between the reaction chamber of a pressure reactor in which a solid reacts with a liquefied gas under pressure, for example pulp with liquid ammonia with the addition of urea, and an expansion tank which is arranged below the pressure reactor is and in its expansion chamber the solid / liquid gas mixture expands explosively out of the reaction chamber.
- the valve according to the invention thus serves as an outlet valve between the reaction chamber and the expansion chamber.
- the valve housing 1 has a valve channel 10 which, when the valve is open, connects the reaction chamber of the pressure reactor with the chamber of the expansion tank continuously for the solid / liquid mixture.
- valve housing 1 comprises a continuous valve body channel 11 which extends essentially at right angles to the valve channel 10 and crosses the valve channel 10.
- the valve body 4 can be moved back and forth in a translatory or linear manner in order to close the valve channel 10 or to open or open the valve channel 10.
- a valve seat 15 is defined by the adjacent wall regions of valve housing 1, valve body channel 11 in the area of the valve seat viewed along the longitudinal axis of valve body channel 11 in the direction of the closing movement of the valve body 4 has a conically narrowing cross section.
- the valve channel 10 opens coming from the reaction chamber of the pressure reactor and narrows conically into the valve seat area, while the valve channel 10 widens in a funnel shape towards the expansion chamber in an outlet area 20.
- the funnel-shaped outlet area 20 is connected to the valve body channel 11 via blow-out channels 12, 12. 1 of the blow-out device, which open at right angles into the valve body channel 11. Residues of solid or the solid / liquid gas mixture as material residues, which may be located in the valve body channel 11, can be blown out of the valve body channel 11 by means of compressed air via the blow-out channels.
- the compressed air is supplied to the valve body channel 11 via compressed air supply channels 16, 17, 18, a continuous compressed air connection being formed between the compressed air supply channels 16, 17, 18, the valve body channel 11 and the blow-out channels 12, 12.1 for blowing out the solid residues.
- the valve body 4 is essentially designed as a cylindrical piston (cf. FIG. 6) which has an end face 41, a flange face 42 and a peripheral face 45.
- the peripheral side 45 or peripheral surface is in a cylinder section 43 and a cone section 44, the cone section 44 adjoining the cylinder section 43 and extending to the end face 41 of the valve body 4.
- the cylinder section 43 has a cross section with a constant diameter, while the cone section 44 tapers from the cylinder section 43 to the end face 41 of the valve body 4, tapering approximately at an angle of 3 °, and ends obtusely in the end face 41.
- the cylinder section 43 of the valve body 4 fits into the valve body channel 11 in order to obtain precise guidance of the valve body 4 in the valve body channel 11 during the reciprocating movement of the valve body 4.
- the cone section 43 of the valve body fits into the conically tapering valve seat region of the valve body channel 11 in order to obtain a self-sealing and self-adjusting seat of the valve body 4 in the valve seat 15 independently of the effects of temperature expansion and material wear.
- the connecting part 2 (see FIG. 5) has a continuous connecting part channel 5, the clear cross section of which corresponds to the clear cross section of the valve body channel 11 and represents a continuation of the valve body channel 11 of the valve housing 1 in the connecting part 2 when the connecting part 2 is fastened or screwed to the valve housing 1 .
- the valve body 4 can consequently be moved from the connecting part channel 5 of the connecting part 2 into the valve body channel 11 of the valve housing 1 or vice versa.
- the compressed air supply channels 16, 17 are formed, which open into the connecting part channel 5.
- the valve body 4 closes the compressed air supply ducts 16, 17 in its retracted position, as shown in FIG. 1.
- the actuating cylinder 3 has a cylinder chamber 13 in which a separating piston 14 can be moved back and forth.
- the separating piston 14 is rigidly connected via a flanged rod 21 to the flange side 42 of the valve body 4, to which it is also flanged.
- a translatory back and forth movement of the separating piston 14 in the chamber 13 of the actuating cylinder 3 results in a corresponding movement of the valve body 4.
- Separating piston 14, rod 21, valve body 4, connecting part duct 5 and valve body duct 11 are axially aligned.
- the separating piston 14 divides the chamber 13 of the Stellzy cylinder 3 into a section acted upon by compressed air and a section not acted upon by compressed air.
- the actuating cylinder 3 is supplied with compressed air via a left-hand bore 22 which is arranged on the left-hand side of the separating piston 14. Another hole
- the cylinder chamber 13 is arranged on the left side of the separating piston 14. The introduced compressed air is discharged from the right side of the thrust piston 14.
- the valve according to the invention further comprises an annular hole nozzle 19 (see FIG. 7), which is fastened diametrically opposite to the connecting part 2 on the valve housing 1 and closes the valve body channel 11.
- the ring hole nozzle 19 has a compressed air supply channel 18 in order to supply compressed air for blowing out solid residues through the blow-out channel 12.1 to the valve body channel 11.
- the ring hole nozzle 19 has a tubular extension 24 which fits into the valve body channel 11 of the valve housing 1.
- a disk-shaped valve piece 25 is movably guided, which has a plurality of radially outer passages 26, via which compressed air can get into the valve body duct 11 and thus into the exhaust duct 18 , if the disc-shaped valve piece 25 does not close the compressed air supply duct 18. If, on the other hand, the valve piece 25 closes the compressed air supply channel 18, the passages 26 of the valve piece 25 are closed and compressed air can no longer get into the valve body passage 11 from the ring-hole nozzle 19. The valve body passage 11 is then closed to the ring hole nozzle 19 or sealed against it.
- valve piece 25 is moved to close the compressed air supply channel 18 of the ring nozzle 19, whereby compressed air is no longer from the
- Ring-hole nozzle 19 can get into the valve housing 1.
- the compressed air is discharged on the right side from the separating piston 14 of the actuating cylinder 3 via the bore 23 and at the same time compressed air is supplied on the left side of the separating piston 14 via the left-hand bore 22 of the chamber 13 on the left side of the separating piston 14, as a result of which the separating piston 14 follows right, moved to the connecting part 2 and, accordingly, the valve body 4 is moved out of its retracted position into the valve seat 15 of the valve housing 1 in order to seal the valve channel 10 of the valve housing 1 in a sealing manner.
- valve seat 15 or valve body channel 10 and valve body 4 cannot lead to a leak in the valve device, since valve body 4 fits conically into its valve seat 15 and, due to the constant pressurization of the actuating cylinder 3 with compressed air, a corresponding self-adjusting adjustment of the valve body 4 is set up in the valve seat 15 or in the valve body channel 11.
- compressed air flows via the compressed air channels 16, 17 of the connecting part 2 along the route from the connecting part channel 5, valve body channel 11 and blow-out channel 12 in order to remove residues of solid matter from this area.
- valve piece 25 of the ring-hole nozzle 19 is moved towards the valve body 4 by the compressed air in the pipe extension 24, whereby the passages 26 of the valve piece 25 are released and compressed air via the compressed air supply duct 18, the passages 26 of the valve piece 25 and the valve body duct 11 into the blow-out duct 12.1, so that residues can also be removed from this area.
- An automatic self-cleaning of the valve seat or the valve device is thus set up during the closing phase of the valve.
- the valve body 4, the valve housing 1 and the connecting part 2 are made of tempered steel.
- the surfaces of the valve body 4, the connecting subchannel 5, the valve body channel 11 and the valve seat 15 are surface-coated, for example by grinding, lapping and subsequent coating, in order to minimize adhesive forces and frictional forces. If this is useful or necessary for the special application, heating grooves can be inserted in suitable positions in the valve housing 1, which can be sealed tightly by flaps.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU64658/99A AU6465899A (en) | 1998-09-14 | 1999-09-14 | Valve |
EP99952452A EP1029188A1 (en) | 1998-09-14 | 1999-09-14 | Valve |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19842037.4 | 1998-09-14 | ||
DE1998142037 DE19842037A1 (en) | 1998-09-14 | 1998-09-14 | Valve |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000015989A1 true WO2000015989A1 (en) | 2000-03-23 |
Family
ID=7880915
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1999/006797 WO2000015989A1 (en) | 1998-09-14 | 1999-09-14 | Valve |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1029188A1 (en) |
AU (1) | AU6465899A (en) |
DE (1) | DE19842037A1 (en) |
WO (1) | WO2000015989A1 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4249560A (en) * | 1979-03-28 | 1981-02-10 | Raque Glen F | Automatic valve clearoff |
EP0177620A1 (en) * | 1984-01-26 | 1986-04-16 | GebràDer Sulzer Aktiengesellschaft | Pressure fluid-actuated valve |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1675445A1 (en) * | 1968-02-06 | 1970-12-10 | De Lorenzo | Piston valve |
CH464628A (en) * | 1968-05-17 | 1968-10-31 | Froelich Martin | Pressure medium controlled valve |
DK151077C (en) * | 1974-10-11 | 1988-04-05 | Dansk Ind Syndikat | FLUIDUM VALVE VALVE |
US4122724A (en) * | 1977-06-24 | 1978-10-31 | The Boeing Company | Swept frequency audible bond tester |
DE3107429C2 (en) * | 1981-02-27 | 1986-11-20 | Otto Tuchenhagen GmbH & Co KG, 2059 Büchen | Cleanable sampling valve |
-
1998
- 1998-09-14 DE DE1998142037 patent/DE19842037A1/en not_active Withdrawn
-
1999
- 1999-09-14 WO PCT/EP1999/006797 patent/WO2000015989A1/en not_active Application Discontinuation
- 1999-09-14 EP EP99952452A patent/EP1029188A1/en not_active Withdrawn
- 1999-09-14 AU AU64658/99A patent/AU6465899A/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4249560A (en) * | 1979-03-28 | 1981-02-10 | Raque Glen F | Automatic valve clearoff |
EP0177620A1 (en) * | 1984-01-26 | 1986-04-16 | GebràDer Sulzer Aktiengesellschaft | Pressure fluid-actuated valve |
Also Published As
Publication number | Publication date |
---|---|
AU6465899A (en) | 2000-04-03 |
DE19842037A1 (en) | 2000-04-06 |
EP1029188A1 (en) | 2000-08-23 |
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