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Valve device for dosing fluid

A technology of quantitative supply and valve device, which is applied in the direction of quantitative device, distribution device, engine lubrication, etc.

Inactive Publication Date: 2015-10-07
HANS JENSEN LUBRICATORS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, very expensive, fast response time, piezo-activated type valves are often used

Method used

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  • Valve device for dosing fluid
  • Valve device for dosing fluid
  • Valve device for dosing fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] figure 1 A schematic diagram of a dosing system with a valve arrangement 1 according to the invention is shown. The dosing system comprises a dosing device 2 which is connected to the valve device 1 via a connecting pipe 19 . A supply line 3 and a return line 4 connect a pressure source, which may be a pump or an accumulator for the fluid, to the valve device 1 .

[0037] The quantitative supply system further includes a control device 12 and a flow meter 13 connected to the valve device 1 . This flow meter 13 is arranged in the branch line 11 which connects the supply line 3 with the second chamber 10, for a more detailed description, refer to image 3 .

[0038] The supply line 3 and the return line 4 are long pipes parallel to each other, and a pressure valve or a pressure switch 15 is provided at the end far away from the pressure source 5 . Excess liquid will thus circulate from the pressurized supply line 3 through the pressure valve 15 , back into the return ...

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PUM

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Abstract

There is disclosed a valve arrangement (1) for dosing a fluid via a dosing unit (2). It includes two valves(V1, V2) with a first and a second valve element (6, 7) for opening and closing ports (A-F) in the valves. The valve arrangement (1) is connected via its ports (C, E, F) with a feed line (3) and a return line (4) connecting the valve arrangement (1) with a pressure source (5) for the fluid. In order to achieve a precise dosing of small amounts of fluid, the valve arrangement is made with a first and a second three-way valve (V1, V2). The first valve (V1) has a first port (A) connected with a first port (D) in the second valve (V2), a second port (B) connected with a connecting line (8) to the dosing unit (2), and a third port (C) connected with the feed or return line (3, 4).The second valve (V2) includes a second port (E) and a third port (F) connected with the feed line (3) or the return line (4). The first valve element (6) has a first position in which the second and third ports (B, C) communicate, and a second position where the first and second ports (A, B) communicate, and the second valve element (7) has a first position in which the first and third ports (D, F) communicate, and a second position where the first and second ports (D, E) communicate.

Description

technical field [0001] The invention relates to a valve arrangement for dosing a fluid by means of a dosing device and comprising two valves. The valve has a first valve spool and a second valve spool for opening and closing a port on the valve. The valve arrangement is connected via its valve ports to a supply line and a return line which connect the valve arrangement to a pressure source for the fluid. [0002] The invention further relates to a valve device in combination with a dosing device. [0003] The invention further relates to a method of operating a valve arrangement for dosing a fluid by means of a dosing device. Background technique [0004] Given the accuracy of the timing and volume dispensed, the response time of existing solenoid valves is not suitable for the precise delivery of small volumes of fluid. For example, in the case of metering cylinder lubricating oil to a large diesel engine, the lubricating oil is metered to engine cylinders especially und...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01M1/16F16N25/02F16N27/00
CPCF01M1/16F16N25/02F16N27/00
Inventor 皮尔·比艾库
Owner HANS JENSEN LUBRICATORS