DE2039276A1 - Hydraulic cylinder for exerting particularly high pressing forces - Google Patents
Hydraulic cylinder for exerting particularly high pressing forcesInfo
- Publication number
- DE2039276A1 DE2039276A1 DE19702039276 DE2039276A DE2039276A1 DE 2039276 A1 DE2039276 A1 DE 2039276A1 DE 19702039276 DE19702039276 DE 19702039276 DE 2039276 A DE2039276 A DE 2039276A DE 2039276 A1 DE2039276 A1 DE 2039276A1
- Authority
- DE
- Germany
- Prior art keywords
- pressure
- working cylinder
- hydraulic
- chambers
- spaces
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/0052—Details of, or accessories for, presses; Auxiliary measures in connection with pressing for fluid driven presses
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/18—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
- F16J15/182—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings with lubricating, cooling or draining means
- F16J15/183—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings with lubricating, cooling or draining means using a lantern ring
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sealing Devices (AREA)
Description
Hydraulischer Zylinder zur Ausübung besonders hoher Preßkräfte Zur Abdichtung des Plungers nach Patentanmeldung M 75 643 Tb/aist eine Stoprbilchse rlt einem außen liegenden Stopfbtlchsflansch d vorgeSehen, wie sie meistens zur Anwendung kommt. Die Packungstiefe richtet sich nach dem Zylinderdruck und beträgt normalerweise bei Drücken bis 200 at das Drei- bis Vierfache der Packungsbreite; bei höheren Drucken wählt man die Packungstiefe sogar gleich dem Sieben- bis Achtfachen der Breite. Hydraulic cylinder for exerting particularly high compressive forces Sealing of the plunger according to patent application M 75 643 Tb / a is a stopper bush An external stuffing plate flange d is provided, as is usually the case for Application comes. The packing depth depends on the cylinder pressure and is normally at pressures of up to 200 atm three to four times the pack width; at higher pressures, the packing depth is chosen to be seven to eight times as high the width.
Diese hohen Packungen haben den Nachteil, daß sie sehr leicht trockenlaufen und die Dichtungen schnell verschleißen. Man hat zwar in vielen Fällen Abhilfe durch eine automatisch arbeitende Schmiervorrichtung geschaffen, wobei in der Regel ein Stopfbüchsflansch mit einer Kammer vorgesehen ist, in die Öl oder Fett hineingepreßt wird, doch hat diese Maßnahme nicht zu zufriedenstellenden Ergebnissen gefthrt.These high packs have the disadvantage that they run dry very easily and the seals wear out quickly. In many cases you can find a remedy created an automatically operating lubricating device, usually a Stuffing box flange is provided with a chamber into which oil or grease is pressed but this measure has not produced satisfactory results.
Nach der vorliegenden Erfindung soll nun der Packungsraum in zwei oder mehrere Raume unterteilt werden, in denen stufenweise ein Gegendruck zum Zylinderdruck erzeugt wird, so daß das Druckgefälle nach außen nicht mehr so groß ist. Diese zusätzlichen Packungsräume werden zweckmäßig dann noch an eine Ölpumpe oder Schmierpresse angeschlossen, wodurch gleichzeitig eine bessere Verteilung des Schmiermittels Uber die ganze Packungstiefe erreicht wird. Ein AusfUhrungsbeispiel der Erfindung ist auf der Zeichnung dargestellt.According to the present invention, the packing space should now be divided into two or several rooms are subdivided, in which a counter pressure to the cylinder pressure is gradually increased is produced, so that the pressure gradient to the outside is no longer so great is. These additional packing spaces are then expediently connected to an oil pump or grease gun connected, which at the same time ensures a better distribution of the Lubricant is reached over the entire packing depth. An exemplary embodiment the invention is shown in the drawing.
Der Zylinder a besitzt eine FUhrungsbüchse b, einen oder mehrere Zwischenflansche c, einen Stopfbüchsflansch d und drei Packungsräume mit den Dichtungen e1 f, g, h, i sowie den Stdtzringen k, 1, m, n, o. Die Druckringe p und q geben den Packungsräumen eine bestimmte Tiefe, während die Zwischenringe r und s die Dichtungen gegeneinander abstützen. Die Dichtungen e, f, g und h können auch umgekehrt eingelegt werden, um sie noch besser mit dem Schmierrmittel zu umspUlen.The cylinder a has a guide bushing b, one or more intermediate flanges c, a stuffing box flange d and three packing spaces with seals e1 f, g, h, i and the standing rings k, 1, m, n, o. The pressure rings p and q give the packing spaces a certain depth, while the intermediate rings r and s the seals against each other prop up. The seals e, f, g and h can also be inserted the other way around, in order to flush them even better with the lubricant.
Die Leitungen t und u sind an je einer Pumpe angeschlossen.The lines t and u are each connected to a pump.
Die Enddicke der Pumpen sind einstellbar. In den Leitungen t und u liegt Je ein flückschlagventil, das das Eintreten von Druckflüssigkeit aus dem Zylinderraum in die Pumpen verhindert. Manometer w zeigen den. jeweiligen Druck in den Packungsräumen an und warnen bei überdruck vor erhöhtem Verschleiß der Dichtungen.The final thickness of the pumps is adjustable. In lines t and u There is a check valve each, which prevents the entry of hydraulic fluid from the cylinder space in the pumps prevented. Pressure gauges w show the. respective pressure in the packing rooms and warn of increased wear of the seals in the event of overpressure.
An jede der Leitungen t und u ist ein Ablaßventil x angeschlossen. Das Ventil weist einen federbelasteten Kolben auf. Der Zylinder des Ventils ist mit dem Rückzugsraum der Presse verbunden. Die Ventile x haben den Zweck, die Packungsräume während der RUckzugsbewegung der Presse oder während des Stillstandes zu entlasten. Die beiden Piimpen sind bei geöffneten Ablaßventilen x ausgeschaltet oder automatisch auf Umlauf gestellt.A drain valve x is connected to each of the lines t and u. The valve has a spring-loaded piston. The cylinder of the valve is connected to the retreat area of the press. The valves x have the purpose of the packing spaces to relieve the pressure during the retraction movement of the press or during standstill. The two pimps are switched off or automatically when the drain valves x are open put into circulation.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702039276 DE2039276A1 (en) | 1970-08-07 | 1970-08-07 | Hydraulic cylinder for exerting particularly high pressing forces |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702039276 DE2039276A1 (en) | 1970-08-07 | 1970-08-07 | Hydraulic cylinder for exerting particularly high pressing forces |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2039276A1 true DE2039276A1 (en) | 1972-02-10 |
Family
ID=5779113
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19702039276 Pending DE2039276A1 (en) | 1970-08-07 | 1970-08-07 | Hydraulic cylinder for exerting particularly high pressing forces |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2039276A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2648892A1 (en) * | 1989-06-21 | 1990-12-28 | Triten Corp | PRESSURE CONTAINER |
US4991495A (en) * | 1988-10-11 | 1991-02-12 | Loegel Sr Charles | Pump-actuating mechanism |
-
1970
- 1970-08-07 DE DE19702039276 patent/DE2039276A1/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4991495A (en) * | 1988-10-11 | 1991-02-12 | Loegel Sr Charles | Pump-actuating mechanism |
FR2648892A1 (en) * | 1989-06-21 | 1990-12-28 | Triten Corp | PRESSURE CONTAINER |
DE4001731A1 (en) * | 1989-06-21 | 1991-01-10 | Triten Corp | PRESSURE VESSEL |
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