DE1453626B2 - Valve with a plate-shaped valve member - Google Patents

Description

1 sheet of drawings

Claims (3)

1: ■■: ■. ·. 2 when using the known valve for a patent claim: piston pump, the piston can only be brought up to the guide member (FR-PS 1 038 935). 1. Valve with a plate-shaped valve- In another known valve, the link is that the housing parts provided with an annular bead as a valve seat work together and the valve spring is designed like a bow and therefore cannot hold the valve seat , the valve member for guiding the valve member and for the lateral between on its circumference at a distance from one-holding the spring (DT-PS 853 367).
Fingers arranged on the other side of a housing fixed to the housing. Further advantages result from the other Füh- xo sayings used to support the valve spring. rungs member with radial play axially displaceable In the drawing is a pump element of a Ra- bar, characterized thereby- dial piston pump as an embodiment of the counter- n e t that the valve as a suction valve of a piston state of the invention in longitudinal section schematically pump (2, 6) is assigned, the piston (2) shown. coaxial to the valve member (12) and on the part of 15 In a piston housing 1, a piston 2 is axial whose valve spring (13) is arranged and that is slidably mounted. On his from the piston The guide member (7) at an end protruding from the fingers (8) is a spring plate 3 has lowing annular guide part, which is attached with the aid of a spring ring 4. Between Center opening and the inside diameter of the spring plate 3 and the piston housing 1 is one Valve spring for the passage of the piston is clamped in ao spring 5, which forms the piston to the outside are. to press an eccentrically mounted drive wheel 6 2. Valve according to claim 1, characterized kenn- seeks whose eccentricity to draw at will, that at least one finger (8) is the find. ger of the guide member (7) a stroke of the In the position shown in the drawing of Valve member (12) limiting stop part (9) »5 piston 2, this is removed from the drive wheel 6, facing end of a guide member 7 3. Valve according to claim 1 or 2, characterized in that it has a ring on the finger 8 indicates that the guide member (7) are attached by means of lateral spacing. Any of the fineines The suction nipple (10) in its operating position 8 has a stop part 9. The guide member 7 is held. 3 ° is by a suction nipple 10 in its position in Piston housing 1 held. The suction nipple 10 has an annular bead protruding towards the piston 11 on. The invention relates to a valve corresponding to the position between the piston 2 and the suction nipple Features of the preamble of claim 1. 35 10 is with lateral play with respect to the fingers 8 The present invention is also based on the object of the guide member 7 establishing a plate-shaped valve member, arranging a valve of the aforementioned type of a piston 12, the dispensing pump opposite the piston 2. This task is graded according to it. According to the invention, a valve spring 13 is achieved between the guide member 7 and the plate-shaped valve member 12. The guide member for the 40 clamped, which seeks to hold the plate-shaped valve member valve member on the annular bead 11 for the purpose of the passage of the KoI,
bens formed in an advantageous manner ring-shaped. A laterally to which the guide member 7 receives-This results in a simplified, easy and mend chamber connected channel is through cheaply produced valve design for a piston pump with a ball 14 and a spring 15, in which the plate-shaped valve member does not monitor a check valve , which needs a precise guide, since between its Um- screw 16 is to be kept in the working position.
catch and that of the adjacent body a large amount to the piston housing 1 is on its inlet side play can be present. A screen 18 can be attached to the pump piston by means of a holder 17, which sieve 18 is guided over at least the opening of the suction nipple 10 up to the proximity of the plate-shaped valve member and covers the opening process 50 thereof. support. With a small stroke of the valve member, the eccentrically mounted drive wheel 6 can a large cross-section is already released, the piston 2 is moved back and forth, the. _ During the suction stroke, the plate-shaped A known valve of the aforementioned type has valve member 12 from the annular bead 11 and although a plate-shaped valve member and a finger 55 directly follow the movement of the piston 2, until they come to a gladly provided guide member that is used to guide the stop parts 9 of the fingers 8 sits on. The valve member and the check valve 14 for supporting the valve spring remains closed. Serves. However, the known valve is not designed for the end of the pressure stroke, and the plate-shaped valve interaction with a piston pump is provided by the valve spring 13 and the pressure in the valve and is also not designed for this purpose. The working space of the piston 2 on the annular bead 11 of the known valve has no opening, and the pressure medium conveyed by the piston, for the passage of a piston, which is therefore also especially liquid, does not flow over the non-return valve to save space can be brought up to the valve 14 to the pressure side in the pump valve member, not shown. The guide housing of the radial piston pump,
Rung member is rather on its from the valve member 65. The suction valve shown in the drawing can be closed on the opposite side, so that it can also be used in other piston pumps.