CN2486749Y

CN2486749Y - Self suction fuel pump

Info

Publication number: CN2486749Y
Application number: CN 01249811
Authority: CN
Inventors: 黄祖圣
Original assignee: 黄林
Priority date: 2001-06-10
Filing date: 2001-06-10
Publication date: 2002-04-17
Anticipated expiration: 2011-06-10

Abstract

The utility model relates to a self-absorption burning pump, comprising a pump body and a pump core embedded with active pump leaves, which is characterized in that a pump import and a pump export are moved to the middle part of the pump cavity face, making the two sides of an end face get support when the pump leaves move to the pump import and the pump export, which keeps the end face not touching the edges of the pump import and the pump export to reduce local abrasion of touching faces of the pump leaves and prolongs service life of the pump without adding any costs, dose not influence pump oil efficiency because of local abrasion.

Description

The self-priming fuel pump

The utility model relates to the self-priming pump that a kind of pump is inhaled fuel oil.

Existing self-priming vehicle fuel pump structure comprises the pump housing, is embedded with the pump core of movable pump leaf, pump chamber working surface avris offers the fuel oil inlet/outlet.Dispatch from the factory or when using, the pump housing and motor all adopt linking body structure, be that the pump housing and electric motor end cap are one, the pump core is fixed on motor shaft end, and makes it be offset to a side of pump chamber, driven by motor pump core high speed rotating, steel disc pump leaf skids off at pump core and the big gap location of pump chamber under centrifugal action, sucks oil plant from inlet, walks to little place, gap and also discharges by outlet, each pump leaf rotates a circle with the pump core and forms the circulation of one-in-and-one-out, inhales an action of arranging thereby finish one.As the existing self-priming pump end view drawing of Fig. 1, self-priming fuel pump leaf 3 is the steel body structure, and only design has three to be embedded in pump core 2 grooves, because inlet/

outlet

4,5 is located at pump chamber 1 avris, during pump leaf 3 high speed rotating, its end face touches mutually with pump chamber 1 working surface all the time, and when walking to import 4 or exporting 5, pump leaf 3 end faces one side lacks supporting, can scrape the edge of inlet/outlet, form concentrated wear, generation abrasion deformation of a specified duration influences the life-span of pump leaf and pump chamber, and pump oil efficient is reduced.

The purpose of this utility model is the self-priming fuel pump that a kind of pump leaf of design is supported balance.

Task of the present utility model is achieved in that a kind of self-priming fuel pump, comprises the pump housing, is embedded with the pump core of movable pump leaf, it is characterized in that the inlet/outlet of pump is located at pump chamber working surface middle part.The pump inlet/outlet is moved to the middle part of pump chamber working surface, the pump leaf is walked to when importing and exporting, its end face both sides all can be supported, keeps end face can't touch the import and export edge all the time, thereby reduce the part friction of pump leaf surface of contact.

The utlity model has reasonable in designly, do not increasing under any condition of cost, prolong the working life of pump, nor influence pump oil efficient because of concentrated wear.

Below in conjunction with concrete legend the utility model is described further:

Fig. 1 has the self-priming pump end view drawing now

Fig. 2 self-priming fuel pump end view drawing

Fig. 3 self-priming fuel pump profile

Fig. 4 self-priming fuel pump cooperates schematic representation with motor

With reference to Fig. 2 and Fig. 3, a kind of self-priming fuel pump comprises the pump housing 6, is embedded with the pump core 2 of movable pump leaf 3, it is characterized in that the inlet/

outlet

4,5 of pump is located at pump chamber 1 working surface middle part.Be embedded with five above engineering plastic pump leaves 3 on the pump core 2, adopt engineering plastics to make pump leaf 3 and pump core 2, the vibration that is produced in the time of can alleviating pump core 2 because of high speed rotating in addition, increases the number of pump leaf 3, makes pump core 2 move more balance.

Cooperate schematic representation with reference to Fig. 4 self-priming fuel pump with motor, its middle pump body 6 and electric motor end cap disjunctor, can form by casting processing, form a pump chamber 1, not only increase its sealability, and reduce manufacturing procedure, pump chamber 1 other end is provided with end cap 11, end cap 11 tightly is locked on the pump housing 6 by screw, and keeps the tightness of pump chamber 1.Be provided with an one-way valve 7 at pump chamber 1 outlet end 5, the rubber pad 72 that one-way valve 7 can be sealed outlet by spring 71 and is formed, and rubber pad 72 can guarantee the outlet of not wearing and tearing when frequent the keying.Set up one-way valve 7 and can make pump chamber not discharge air in the pump chamber under the oil-feed state, produce negative pressure the low level fuel oil is sucked the formation self-priming.

Claims

1, a kind of self-priming fuel pump comprises the pump housing, is embedded with the pump core of movable pump leaf, it is characterized in that the inlet/outlet of pump is located at pump chamber working surface middle part.

2, self-priming fuel pump according to claim 1 is characterized in that being embedded with on the pump core five above engineering plastic pump leaves.

3, self-priming fuel pump according to claim 1 is characterized in that the pump chamber outlet end is provided with an one-way valve.