DE490742C - Seal between pump body and piston rod of a high pressure pump - Google Patents
Seal between pump body and piston rod of a high pressure pumpInfo
- Publication number
- DE490742C DE490742C DES85869D DES0085869D DE490742C DE 490742 C DE490742 C DE 490742C DE S85869 D DES85869 D DE S85869D DE S0085869 D DES0085869 D DE S0085869D DE 490742 C DE490742 C DE 490742C
- Authority
- DE
- Germany
- Prior art keywords
- piston rod
- seal
- pump
- pump body
- high pressure
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F11/00—Arrangements of sealings in combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2700/00—Supplying, feeding or preparing air, fuel, fuel air mixtures or auxiliary fluids for a combustion engine; Use of exhaust gas; Compressors for piston engines
- F02M2700/13—Special devices for making an explosive mixture; Fuel pumps
- F02M2700/1317—Fuel pumpo for internal combustion engines
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Description
Dichtung zwischen Pumpenkörper und Kolbenstange einer Hochdruckpumpe Die Erfindung bezieht sich auf eine verbesserte Abdichtung für Verbindungen, z. B. zwischen Pumpenkörpern und ihren Plungern, und sie ist besonders geeignet für Einspritzpumpen, die den Brennstoff in Diesel-oder ähnliche Motoren einspritzen, bei welchen die gewöhnliche Dichtung infolge des sehr großen Einspritzdruckes sich als unfähig erwiesen hat, das Entweichen oder Heraussickern von Brennstoff zu verhindern.Seal between pump body and piston rod of a high pressure pump The invention relates to an improved seal for connections, e.g. B. between pump bodies and their plungers, and it is particularly suitable for Injection pumps that inject fuel into diesel or similar engines, in which the usual seal as a result of the very high injection pressure Has proven unable to prevent the escape or seepage of fuel.
Der Zweck der Erfindung ist, diese Schwierigkeiten durch die Anwendung einer Balgeinrichtung zu überwinden, die aus einer Reihe dauernd verbundener hohler Metallscheiben besteht, welche einen öl- oder gasdichten Metallverschluß an Stelle der üblichen Dichtung bilden.The purpose of the invention is to address these difficulties by applying a bellows device to overcome, which consists of a series of continuously connected hollow There is metal disks, which have an oil- or gas-tight metal seal in place the usual seal form.
Die so gebildete wellenförmige Kammer ist einerseits an dem Pumpenkörper, andererseits an der Kolbenstange befestigt. Auf Grind ihrer Nachgiebigkeit wirkt sie als eine Feder, um die Kolbenstange zurückzubewegen. Sie ermöglicht außerdem, sehr genau abgemessene Ladungen des Brennstoffes einzuspritzen, weil keine Flüssigkeit ausströmen kann.The wave-shaped chamber formed in this way is on the one hand on the pump body, on the other hand attached to the piston rod. On Grind their indulgence acts it as a spring to move the piston rod back. It also enables To inject very precisely measured charges of the fuel because there is no liquid can flow out.
Eine konstruktive Ausführungsform der I3rfindung, die als Beispiel dienen soll, ist auf der Zeichnung dargestellt. Diese Bauart ist besonders zur Anwendung bei einem Dieselmotor geeignet.A constructive embodiment of the invention, which as an example is to serve is shown on the drawing. This type of construction is particularly useful suitable for a diesel engine.
Abb. z ist eine Seitenansicht der Einrichtung, die auf einer Einspritzpumpe befestigt ist, von der ein Teil in punktierten Linien dargestellt ist.Fig. Z is a side view of the device mounted on an injection pump is attached, part of which is shown in dotted lines.
Abb.2 ist ein senkrechter Querschnitt nach Linie 2-2 der Abb. r.Figure 2 is a vertical cross-section taken along line 2-2 of Figure r.
Die verbesserte Dichtung besteht aus einer Reihe von Scheiben a, die durch bis zu einer gewissen Tiefe eingeschnittene Nuten b aus einem zylindrischen Metallblock herausgearbeitet sind, was durch Abdrehen oder auf andere Weise geschehen kann.The improved seal consists of a series of washers a, the through grooves b cut to a certain depth from a cylindrical Metal block are carved out, which can be done by turning or in some other way can.
Dieser mit den äußeren Nuten versehene Zylinder wird dann innen bei c ausgebohrt (Abb. 2), und die Scheiben a werden nacheinander bei e innen ausgehöhlt. Der so gebildete Körper mit inneren und äußeren Aussparungen kann als ein Balg mit Metallwänden angesehen werden. Nachdem er gehärtet ist, kann er wie eine Feder wirken.This cylinder, which is provided with the outer grooves, is then inside at c drilled out (Fig. 2), and the disks a are hollowed out one after the other at e inside. The body thus formed with inner and outer recesses can be used as a bellows with Metal walls can be viewed. After it has hardened, it can act like a spring.
Wie aus Abb. 2 hervorgeht, endet der aus den biegsamen Scheiben a gebildete Balg an seinem unteren Ende in einem Bund oder einer Mutter f, die innen Gewinde bei g hat, so daß er auf ein entsprechendes Gewinde an dem Pumpenkörper ha aufgeschraubt werden kann, wie dies in punktierten Linien in Abb. I gezeigt ist.As can be seen from Fig. 2, the end of the flexible discs a formed bellows at its lower end in a collar or nut f which inside Has thread at g so that it attaches to a corresponding thread to the Pump body ha can be screwed on, as shown in dotted lines in Fig. I is shown.
Am oberen Ende ist der federnde Balg mit einer Muffe oder einem Hals i versehen, so daß er zwischen einem Bund oder einer Schulter j nahe dem oberen Ende der Kolbenstange d und :der unteren Fläche einer Mutter oder Kappe k, die auf das Gewindeende Z der Kolbenstange aufgeschraubt ist, befestigt werden kann, wie dies in punktierten Linien in Ab#b. r gezeigt ist. Durch diese Mittel werden die Kolbenstange d und der Pumpenkörper, in dem sie axial beweglich ist, in dauernder hermetischer Verbindung gehalten, die allen Drücken, denen sie ausgesetzt ist, -widerstehen kann.At the top is the resilient bellows with a sleeve or neck i provided so that it is between a collar or a shoulder j near the top End of the piston rod d and: the lower surface of a nut or cap k that is on the threaded end Z of the piston rod is screwed on, can be attached as this in dotted lines in Ab # b. r is shown. Through these means the Piston rod d and the pump body, in which it is axially movable, in permanent hermetic connection that withstand all pressures to which it is exposed can.
Auf Grund der nachgiebigen Dichtung zwischen dem Pumpenkörper und der Kolbenstange ergibt sich, daß die Dichtung die Bewegung der Kolbenstange durch ihr Antriebsmittel, z. B. einen Daumen, und die selbsttätige Rückkehr der Kolbenstange gestattet, wenn das Antriebsmittel zu wirken aufhört. Die Dichtung kann auch anstatt aus ringförmigen Rillen an einem zylindrischen Block aus einem zylindrischen Flanschenrohr mit nahe aneinanderliegenden Rippen und den erforderlichen Aussparungen hergestellt werden.Due to the flexible seal between the pump body and the piston rod results in the seal moving the piston rod through their drive means, e.g. B. a thumb, and the automatic return of the piston rod allowed when the drive means ceases to act. The seal can also be used instead of annular grooves on a cylindrical block of a cylindrical flanged tube made with closely spaced ribs and the necessary recesses will.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE490742X | 1927-06-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE490742C true DE490742C (en) | 1930-01-31 |
Family
ID=3870589
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DES85869D Expired DE490742C (en) | 1927-06-03 | 1928-06-03 | Seal between pump body and piston rod of a high pressure pump |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE490742C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1100379B (en) * | 1956-06-04 | 1961-02-23 | Rasmus Kristian Austraat Wiig | Fuel pump for internal combustion engines |
-
1928
- 1928-06-03 DE DES85869D patent/DE490742C/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1100379B (en) * | 1956-06-04 | 1961-02-23 | Rasmus Kristian Austraat Wiig | Fuel pump for internal combustion engines |
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