Hand pump for pumping fluids, and filter system for fluids, comprising a hand pump

A filter system, manual pump technology, applied to parts of pumping devices for elastic fluids, liquid fuel engines, pumps with flexible working elements, etc., can solve the problems of limited displacement height, unused, etc., to achieve simple Assembly effect

Active Publication Date: 2012-07-11
MANN HUMMEL GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the fastening point always remains on one side of the holding range, whereby the displacement height is correspondingly limited and a large part of the possible piston displacement remains unused

Method used

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  • Hand pump for pumping fluids, and filter system for fluids, comprising a hand pump
  • Hand pump for pumping fluids, and filter system for fluids, comprising a hand pump
  • Hand pump for pumping fluids, and filter system for fluids, comprising a hand pump

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Embodiment Construction

[0021] exist figure 1 A detail of a fuel filter system 10 for a motor vehicle internal combustion engine is shown in . The fuel filter system 10 comprises a filter head 12 on which a replacement filter 14 which is not of interest here is mounted.

[0022] A manual pump 16 is integrated in the filter head 12 . The hand pump 16 is used to manually draw fuel from the fuel tank, for example after replacing the replaceable filter 14 or before restarting the internal combustion engine when the fuel tank is emptied.

[0023] A suction line 18 of a hand pump 16 is arranged inside the filter head 12 . exist image 3 The suction pipe 18 is seen in the sectional view of . The suction line 18 is connected to a fuel supply line (not shown in the drawing) from the fuel tank and opens into a pump chamber 20 of a pump housing 22 of the hand pump 16 . An inlet non-return valve 24 is arranged in the intake line 18 , which opens to draw fuel into the pump chamber 20 .

[0024] exist figur...

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Abstract

The invention relates to a hand pump (16) for pumping fluids, in particular fuel, and a filter system (10) for fluids, comprising a hand pump (16), in particular of a motor vehicle. The hand pump (16) comprises a pump housing (22), which has an inlet (18) and an outlet (26) for the fluid, and an actuating body (32), which is movably mounted in the pump housing axially to a stroke axis (34). A membrane (46) has a flexible ring section (48) surrounding the stroke axis (34), said ring section being fixed radially inward in a fixing region (50) of the actuating body (32) and radially outward in a retaining region (54) of the pump housing (22). During a stroke movement, the actuating body (32) can be pressed with the membrane (46) against the force of an elastic element (42) from a resting position (I) into the pump housing (22) and into an actuating position (II), and led back out into the resting position (I) by means of the elastic element (72). Thus, the volume of a pump chamber (20) can be modified. A stroke height (77) of the actuating body (32) is greater than a smallest radial distance (74) between the retaining region (54) and the fixing region (50) during a stroke. The retaining region (54) of the pump housing (22) lies between the position (73) of the fixing region (50) in the resting position (I) and the position (75) of the fixing region (50) in the actuating position (II) when viewed axially to the stroke axis (34).

Description

technical field [0001] The invention relates to a hand pump for pumping liquids, especially fuels, especially fuels for vehicles, a pump casing with a liquid inlet and an outlet and an actuating body mounted axially relative to a displacement axis in the pump casing, and with surrounding The film of the flexible ring segment of the displacement axis, which is fixed radially inwardly at the fixed position of the manipulating body, and radially externally is fixed at the holding range of the pump casing, wherein the manipulating body and the film overcome the force of the elastic part during the displacement movement Press from the static state to the operating state inside the pump casing, and use the elastic member to return to the static state, thereby changing the volume of the pump chamber, wherein the displacement height of the operating body is greater than the distance between the holding range and the fixed position during displacement. Minimum radial distance. [0002...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M37/16F04B43/00F04B43/02F04B53/14F04B9/14F02M37/44
CPCF02M37/22F04B9/14F04B43/0063F02M37/16F04B43/023F02M37/44F04B53/14F04B43/14
Inventor C.塔尔曼
Owner MANN HUMMEL GMBH
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