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Seal-retaining valve for fluid metering device

A valve sealing and sealing groove technology, applied in measuring devices, fluid distribution valves, liquid/fluid solids measurement, etc., can solve problems such as influence and unfavorable accuracy of distribution devices

Inactive Publication Date: 2011-07-13
GRACO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the accuracy of the dispensing device is adversely affected
As a result, the fluid dispensing device and valve need to be disassembled to locate and reseat the seal, or to replace the seal, which interrupts operations using the fluid dispensing device

Method used

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  • Seal-retaining valve for fluid metering device
  • Seal-retaining valve for fluid metering device
  • Seal-retaining valve for fluid metering device

Examples

Experimental program
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Embodiment Construction

[0013] figure 1 A perspective view of a handheld fluid dispensing device 10 is shown in which the seal maintaining valve of the present invention is used to limit fluid leakage from the device 10 . Dispensing device 10 includes platform 12 , housing 14 , high pressure hydraulic coupling 16 , dispensing tube 18 , trigger lever 20 , user interface 22 and display 24 . The dispensing device 10 allows the dispensing of fluid stored in a bulk container in small volumes in an appropriate manner. For example, in one embodiment, dispensing device 10 includes a meter used in lube shops to deliver small amounts of lube from a storage tank to a vehicle engine. Coupler 16 is connected to the bulk container by fluid handling hose (not shown), which may be pressurized, for example, using an air pump. The length of the hose enables the device 10 to be conveniently reached where it is practically impossible to move the bulk container. Dispensing tube 18 is configured to be easily positioned...

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PUM

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Abstract

The invention relates to a valve and a fluid metering device. The valve comprises a valve cartridge, a valve stem and a valve seal. The valve cartridge comprises a generally cylindrical cartridge body, a bore extending longitudinally through the cartridge body, and an outlet passage and intermittent inlet passages extending through a side wall of the cartridge body to intersect the bore. The valve stem comprises an elongate body configured to slide within the bore, and a neck and a seal channel circumscribing the elongate body. The valve seal 66 is seated within the seal channel. The valve stem slides within the bore to move the seal channel past the inlet passages. A plurality of interrupted inlet passages are configured to communicate the seal channel with the side wall by means of fluid communication till the neck is communicated with the plurality of interrupted inlet passages when the seal channel moves and passes the plurality of inlet passages. Portions of the cartridge body between the inlet passages retain the valve seal within the valve channel until the inlet passages are open to the neck.

Description

technical field [0001] The present invention relates to a flow control valve, and more particularly to a linearly actuated valve for use in a fluid dispensing device. Background technique [0002] Hand-held devices are commonly used to dispense measured quantities of fluids from bulk containers. For example, car gas stations typically use handheld gauges to dispense small amounts of lube oil from large drums into car engines. Such handheld meters and other similar fluid dispensing devices typically include a valve having a linearly actuated valve stem received within a valve barrel. The valve cartridge is fluidly connected to a source of pressurized fluid within the device, with the operator actuating the valve stem to regulate the flow of pressurized fluid through the valve cartridge. The valve stem is usually provided with a seal, such as an O-ring, which prevents fluid from leaking through the valve when the valve stem is in the closed position. However, in operation, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B67D7/08F16K21/00G01F15/00B67D7/30
CPCB67D7/425B67D7/20Y10T137/3149Y10T137/86759B67D7/08F16K21/00G01F15/00
Inventor 戴维·L·布里泽尔丹尼尔·J·罗杰斯约翰·C·霍尔曼
Owner GRACO INC
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