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Vacuum pump with flame arrester

A vacuum pump and flame-proof technology, applied in distribution devices, special distribution devices, liquid distribution, transportation or transfer devices, etc., can solve the problems of high manufacturing costs

Inactive Publication Date: 2017-11-28
杜尔技术有限及两合公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The problem with this type of production is, on the one hand, ensuring a uniform width of each channel and a uniform distribution over the entire flow area
This places high demands on manufacturing, which results in relatively high manufacturing costs

Method used

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  • Vacuum pump with flame arrester
  • Vacuum pump with flame arrester
  • Vacuum pump with flame arrester

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] 1. Basic structure of refueling system

[0023] figure 1 An output device in the form of a refueling system 10 is shown schematically. The refueling system 10 includes a mostly concealed storage tank 12 in which fuel 14 in liquid form is stored. A fuel vapor 17 is formed above the liquid level of the fuel 14 .

[0024] A fuel pump 20 is arranged inside the filling tower 18 , which is connected to the storage tank 12 via a fuel removal line 22 . The fuel pump 20 is also connected to a fuel delivery hose 26 via a fuel delivery line 24 . The fuel delivery hose 26 is connected mechanically and in line with the filling tower 18 via an adapter 36 . A flow meter 27 for determining the flow of the output is connected in the fuel output line 24 .

[0025] It is connected via a fuel delivery hose 26 to a motor vehicle 28 to be refueled, in particular to its fuel tank 30 . The fuel delivery hose 26 has a fuel valve or nozzle 32 for regulating the delivery.

[0026] In order...

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PUM

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Abstract

The invention relates to a vacuum pump for extracting explosive fuel-vapor air mixtures for gas recirculation devices at filling stations. The vacuum pump comprises an inlet line, an outlet line, a working area connected to the inlet line and the outlet line, and a flame trap with a plurality of channels. According to the invention, it is provided that the flame arrester comprises a component with a ceramic material.

Description

technical field [0001] The invention relates to a vacuum pump for pumping explosive fuel vapor-air-mixtures for a gas return device of an outlet at a filling station, said vacuum pump having an inlet pipe, an outlet pipe, a connection to the inlet pipe and the outlet pipe working area, and at least one flame breakdown device. Background technique [0002] In many countries it is stipulated by law that the gasoline vapors are led back into the storage tank in order to avoid the release of gasoline vapors when the vehicle is refueled. For this purpose, a gas return system was installed in the filling tower. An effective air return system is formed as a highly efficient system, in which a trouble-free air return pump is a standard component. Such return pumps—also called vacuum pumps—are usually designed as piston pumps and work in intermittent mode. [0003] The fuel vapor-air mixture produced in the return flow can be explosive or detonating, so that due to legal requireme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B67D7/32
CPCB67D7/32B67D7/048
Inventor A·舍尔
Owner 杜尔技术有限及两合公司