DE1528566B1 - Plunger piston pump, especially for pumping liquid fuel. - Google Patents

Description

3 4

Seat 8 and at the same time run out as connecting piece 11. That way it becomes a great one

forms. In the area between the two magnetic force in the working air gap and thus a large one

poles 2 and 3, the support body 5 is generated on the internal delivery pressure.

side as a guide 9 for the pump piston 10 with when the pump piston 10 is reset

the built-in valve 14 and on the outside 5, the valve 14 and lets the medium into the

■ The piston interior and the space 18 flow in as a coil body 7 for the excitation winding 1.

forms. During the working stroke, the valve 19 opens in the valve

The magnetic pole 3 has an opening 12 which is seated at 8 of the support body 5, and the medium flows over it

j the pump piston 10 is adapted. The magnetic connector 11 into the connected ί pole 2 carries a conical opening 13, the io pressure line. Will the plunger pump with

j larger diameter the pump piston 10 pulls alternating current operated, then makes it in the posi-

is turning. The pump piston 10 is a working stroke on the facing tive and negative half-wave.

End also tapering to a cone. The cone When the current crosses zero, the

', the angle of the piston end 15 and the opening 13 are reset via the spring 16.

same size. This transition provides the working air 15 As the section through the plunger pump

^: Gap of the magnet system. It clearly shows that the plastic support

The resetting of the pump piston 10 over-body 5 the electromagnetic drive system of

takes a compression spring 16, the flow with the pump piston and the pump piston

10 against a stop 17 of the support body 5 valves. It's also easy to see that the

presses. 20 Construction of the new plunger piston pump only a few

Due to the conical design of the working part, it requires parts that are easy to assemble

The pump piston 10 can have a large air gap.

1 sheet of drawings

Claims (3)

1 2 flow sleeve built, as the French patent claims: document 1 278 745 can be seen. The problem of sealing does not arise here, as the penetration 1. Plunger piston pump, especially for the flow sleeve, the complete electric drive unit change of liquid fuel, with electro- 5 separates from the flow channel. The magnetic on bobbins Drive acting as a pot magnet with exciter windings are wound on this ring disk-shaped Magnetic poles pushed onto the end sleeve and fastened. This requires sides and a magnetizing connection, but a higher loss in the magnetic circuit, since the ble return ring on the outside of the pump chamber over the flow sleeve is built and in its central bore an io magnetic pole is separated. magnetizable pump piston with built-in It is the object of the invention to provide a plunger piston Valve between the magnetic poles displaceable pump of the type mentioned in such a way as to be designed is, whereby the guide for the pump th that the flow of the pumped liquid piston from the insides of the magnetic poles and through the pump tightly and completely from the electrivon a located between the magnetic poles 15 see drive system is separated so that the pump Support body is formed for the excitation winding, can also work with great pressure. About that characterized in that the bearing should also be of a simple structure of the efficiency body (5) is formed continuously and both of the electric drive not through the sealing side in connection piece (11) merges that the medium is deteriorated. This will be done after the Breakthroughs (6) having magnetic poles 20 invention achieved in that the support body through (2,3) is formed at a predetermined distance in the support body and on both sides in connector (5) are injected made of plastic and that clip goes over that the perforations open Support body (5) between these injected magnetic poles at a predetermined distance into the th magnetic poles (2,3) are injected as a bobbin for the support body made of plastic and that Excitation winding (1) is formed. 35 of the support body injected between these 2. Plunger piston pump according to claim 1, there- magnetic poles as a coil body for the exciter winding characterized in that a magnetic pole (3) is formed in treatment. The passage of the plunger tenders Pump axis a bore (12) for the pump is through the injection of the magnetic pump piston (10) and the other magnet pole is separated from the drive system. Through the Mitverpol (2) with a conical pole opening (13) turning the support body as a coil body and 30 is provided, which is provided with a correspondingly designed fastening part for the magnetic poles in the case of optimized Pump piston end (15) also learns the working air efficiency of the magnetic circuit gap of the pot magnet forms. the number of parts is reduced and thus the assembly 3. Plunger pump according to claims 1 days of the plunger pump simplified. and 2, characterized in that the length 35 has a low-loss magnetic circuit of the pump piston (10) is roughly the same as the one obtained from the new plunger piston pump which enters the plastic support body (5) through that a magnetic pole in the pump axis sprayed magnetic poles (2, 3). Bore for the pump piston carries and the other Magnetic pole with a conical pole opening 40 can be seen with a suitably trained The end of the pump piston forms the working air gap of the pot magnet. The length of the pump piston is The invention relates to a plunger piston pump, approximately equal to the distance in the art in particular Magnetic poles injected to convey liquid fuel carrier bodies, fabric, with electromagnetic drive, which is used as a pot 45 The invention is applied to a section magnet with annular disc-shaped magnetic poles presented an exemplary embodiment of a new plunger tip End faces and a magnet pump connecting these explained in more detail. adjustable return ring on the outside. The pot magnet of the new plunger pump is built and in its central bore a magneti- consists in a known manner from the excitation coil 1, adjustable pump piston with built-in valve between the washer 50 arranged on the end faces the magnetic poles is slidably guided, where-shaped magnetic poles 2 and 3 and the magnetisierbei the guide for the pump piston of the cash return ring 4, which the two magnet insides the magnetic pole and one between pole 2 and 3 magnetically connects to each other, The two magnetic poles 2 and 3 are in one Excitation winding is formed. 55 continuous plastic support body 5 in certain Such a plunger pump is injected at a distance from one another, for example. To do this, show show in the German utility model 1 937 184 the magnetic poles breakthroughs 6, in which the art is shown. In the area of the pump piston guide, substance penetrates during the injection process, so that the In plunger pumps of this type, at least two magnetic poles 2 and 3 are immovable on the support body 5 Separation points are set at 6 ° when passing through the suction nozzle. Although the magnetic poles 2 and 3 provided for the pressure port. These separation points at least partially extend into the pump chamber of the allow operation only with the lowest pressure, since the support body 5 is extended through the injection the pumped liquid in the area of these separating magnetic poles 2 and 3, the plunger pump put from the flow channel into the electrical tight. Drive system can penetrate. 65 The support body 5 extends over the magnet In order to eliminate this disadvantage, one also has pole 3 and is not used there as a connecting piece 11 Plunger pumps formed with a continuous. The one protruding beyond the magnetic pole 2 and part of the support body 5 that merges directly into the connection piece is used as an additional valve