DE79345C - Valveless pump with two pistons - Google Patents

Valveless pump with two pistons

Info

Publication number
DE79345C
DE79345C DENDAT79345D DE79345DA DE79345C DE 79345 C DE79345 C DE 79345C DE NDAT79345 D DENDAT79345 D DE NDAT79345D DE 79345D A DE79345D A DE 79345DA DE 79345 C DE79345 C DE 79345C
Authority
DE
Germany
Prior art keywords
piston
pistons
slide
movement
pump
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
Application number
DENDAT79345D
Other languages
German (de)
Original Assignee
Maschinenfabrik Kappel, Kappel-Chemnitz
Publication of DE79345C publication Critical patent/DE79345C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B7/00Piston machines or pumps characterised by having positively-driven valving
    • F04B7/04Piston machines or pumps characterised by having positively-driven valving in which the valving is performed by pistons and cylinders coacting to open and close intake or outlet ports
    • F04B7/045Two pistons coacting within one cylinder
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/02Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2700/00Supplying, feeding or preparing air, fuel, fuel air mixtures or auxiliary fluids for a combustion engine; Use of exhaust gas; Compressors for piston engines
    • F02M2700/13Special devices for making an explosive mixture; Fuel pumps
    • F02M2700/1317Fuel pumpo for internal combustion engines
    • F02M2700/1352Fuel pump with a constant stroke piston without control means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Reciprocating Pumps (AREA)

Claims (1)

KAISERLICHESIMPERIAL K PATENTAMT.K PATENT OFFICE. Die auf der beiliegenden Zeichnung in einer Vorderansicht, einem Querschnitt und drei Längsschnitten dargestellte Pumpe soll zur Förderung kleiner, aber genau abgemessener Flüssigkeitsmengen dienen. Für diesen Zweck sind Ventile nicht anwendbar, da diese wegen der geringen Saugwirkung nicht sicher wirken; Die Einrichtung ist deshalb hier so getroffen, dafs zwei Kolben K1 K2, welche in einer gemeinsamen Cylinderbohrung des Cylinders C sich verschieben, zugleich als Steuerungsorgan dienen. Die Bewegung der Kolben erfolgt durch einen in der Führung F gleitenden Schieber S, der durch die Zugstange Z hin und her bewegt wird. Der Schieber S erfafst die Kolben mit seinen gabelförmigen, Enden, von denen das eine dicht zwischen die beiden Bunde des Kolbens K1 fafst, das andere zwischen den Bunden des Kolbens K2 Spielraum hat, so dafs der Kolben K2 nur in einem Theil der Bewegung des Schiebers 5 folgt.The pump shown in a front view, a cross-section and three longitudinal sections in the accompanying drawing is intended to convey small but precisely measured amounts of liquid. Valves cannot be used for this purpose, as they do not work reliably because of the low suction effect; The device is therefore made here in such a way that two pistons K 1 K 2 , which move in a common cylinder bore of cylinder C, also serve as control members. The pistons are moved by a slide S sliding in the guide F , which is moved back and forth by the pull rod Z. The slide S grips the piston with its fork-shaped ends, one of which is tight between the two collars of the piston K 1 , the other has clearance between the collars of the piston K 2 , so that the piston K 2 is only in part Movement of the slide 5 follows. Der Arbeitsgang ist folgender:The process is as follows: In Fig. .3 ist die Stellung der Kolben zu Beginn des Saughubes angegeben, der Schieber S mit dem Kolben K1 beginnt sich in der Pfeilrichtung zu bewegen, wodurch die Flüssigkeit durch die Zuleitung X angesaugt wird. Der Kolben K2 , ist inzwischen stehen geblieben, bis die Gabel von S an seinem inneren Bunde antrifft; in diesem Augenblick (Fig. 4) hört die Saugwirkung auf und beide Kolben K^ und K2 bewegen sich mit der dazwischen befindlichen Flüssigkeit fort, bis die Bewegung von S umkehrt, zugleich bis vor die Einmündung der Druckleitung Y, Fig. 5. Nach erfolgter Umkehr der Bewegung des Schiebers S bleibt der Kolben K2 stehen, durch die Stopfbüchsenreibung gehalten, der Kolben K1 drückt die Flüssigkeit in die Druckleitung und schiebt schliefslich den Kolben K2 mit zurück, bis in die in Fig. 3 gezeichnete Stellung, worauf das Spiel sich wiederholt.In Fig. 3 the position of the pistons at the beginning of the suction stroke is indicated, the slide S with the piston K 1 begins to move in the direction of the arrow, whereby the liquid is sucked in through the supply line X. The piston K 2 has stopped in the meantime until the fork of S hits its inner collar; At this moment (Fig. 4) the suction ceases and both pistons K 1 and K 2 move on with the liquid in between until the movement of S is reversed, at the same time up to the confluence of the pressure line Y, Fig. 5. After Once the movement of the slide S has been reversed, the piston K 2 stops, held by the stuffing box friction, the piston K 1 pushes the liquid into the pressure line and finally pushes the piston K 2 back with it, up to the position shown in FIG. 3, whereupon the game repeats itself. Um die Pumpe aafser Thä'tigkeit zu setzen, wird ein durch eine Regulirvorrichtung bethätigter Theil R zwischen die Gabel des Schiebers S und den Bund des. Kolbens K2 gebracht, so dafs auch der letztere der Bewegung von S ständig folgt. Um aufserdem noch die Möglichkeit zu haben, die Fördermenge zu ändern, kann man den Theil R, wie es an bekannten dergleichen Vorrichtungen schon geschieht, keilig oder abgestuft formen.In order to set the pump to work, a part R operated by a regulating device is brought between the fork of the slide S and the collar of the piston K 2 , so that the latter also follows the movement of S continuously. In order to also have the possibility of changing the delivery rate, the part R can be shaped in a wedge-shaped or stepped manner, as is already the case with known devices of the same type. Pa ten τ - Aν s ρ R υ c η :Pa ten τ - Aν s ρ R υ c η: Ventillose Pumpe mit zwei Kolben, bei welcher die Saug- und Druckwirkung und die Steuerung durch zwei in gemeinsamer Cylinderbohrung in gleichem Sinne bewegte Kolben bewirkt wird, von denen der eine K1 die volle Hubbewegung regelmäfsig ausführt, der andere K2 mit den Antriebsmechanismen so in Zusammenhang gebracht wird, dafs er entweder nur einen Theil der Hubbewegung mitmacht, in welchem Falle die Pumpe fördert, oder dafs er die volle Hubbewegung mitmacht, in welchem Falle die Pumpe nicht wirkt.Valveless pump with two pistons, in which the suction and pressure effect and the control is brought about by two pistons moving in the same direction in a common cylinder bore, one of which K 1 regularly performs the full stroke movement, the other K 2 with the drive mechanisms so in It is related that it either takes part in only part of the lifting movement, in which case the pump delivers, or that it participates in the full lifting movement, in which case the pump does not work. Hierzu 1 Blatt Zeichnungen.1 sheet of drawings.
DENDAT79345D Valveless pump with two pistons Expired - Lifetime DE79345C (en)

Publications (1)

Publication Number Publication Date
DE79345C true DE79345C (en)

Family

ID=351989

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT79345D Expired - Lifetime DE79345C (en) Valveless pump with two pistons

Country Status (1)

Country Link
DE (1) DE79345C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2492008A1 (en) * 1980-10-11 1982-04-16 Draegerwerk Ag METERING PUMP
DE3900697A1 (en) * 1989-01-12 1990-07-19 Draegerwerk Ag VALVELESS PUMP
EP1195518A2 (en) * 2000-10-04 2002-04-10 Robert Bosch Gmbh Method and device for dosed pumping

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2492008A1 (en) * 1980-10-11 1982-04-16 Draegerwerk Ag METERING PUMP
DE3038525A1 (en) * 1980-10-11 1982-05-06 Drägerwerk AG, 2400 Lübeck DOSING PUMP
DE3900697A1 (en) * 1989-01-12 1990-07-19 Draegerwerk Ag VALVELESS PUMP
EP1195518A2 (en) * 2000-10-04 2002-04-10 Robert Bosch Gmbh Method and device for dosed pumping
EP1195518A3 (en) * 2000-10-04 2003-07-02 Robert Bosch Gmbh Method and device for dosed pumping

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