CN2617957Y

CN2617957Y - Blade petrol filling pump on board

Info

Publication number: CN2617957Y
Application number: CN 03217466
Authority: CN
Inventors: 阎承毅; 刘军
Original assignee: QILU OIL PUMP FACTORY BOSHAN CITY SHANDONG PROV
Current assignee: QILU OIL PUMP FACTORY BOSHAN CITY SHANDONG PROV
Priority date: 2003-05-23
Filing date: 2003-05-23
Publication date: 2004-05-26
Anticipated expiration: 2013-05-23

Abstract

The utility model provides a blade petrol filling pump on board which comprises a pump body, a pump arranged in the pump body, a suction chamber and a spitting chamber, wherein the suction chamber and the spitting chamber are correspondingly provided with an oil sucking opening and an oil discharging opening. The utility model is characterized in that the pump adopts a blade pump which is composed of rotors, an eccentric sleeve and blades. Each blade is arranged in a rotor blade groove along an axis direction, and the external end surface is compactly jointed with the eccentric sleeve inner surface by centrifugal force. The eccentric sleeve is provided with a plurality of bores, and an external wall is sealed and connected with a longitudinally arranged baffle in the pump body, the baffle is provided with a major diameter back flow bore, and the pump body is horizontally provided with an escape valve at the back flow bore position. Owing to adopting the blade pump which can not be restricted by rotating speed, an oil pump can normally work even with the engine idling rotating and satisfy the requirements of flow capacity and pressure. The self-priming time is contracted to reduce the wearing and damaging of components cause by oil pump blank running, the utility model increases the running efficiency of the oil pump, and the pump has the advantages of simple structure and reliable work performance.

Description

Blade type refuelling truck oil pump

Affiliated technical field

The utility model provides a kind of blade type refuelling truck oil pump, belongs to the displacement pump technical field.

Background technique

For a long time, fuel tank, refuelling truck suck or discharge oil plant and adopt gear oil pump or self-suction centrifugal oil pump more, the input speed of gear oil pump requires more than 950 rev/mins, the input speed of self-suction centrifugal oil pump must be more than 1450 rev/mins, and to install speed increaser additional, so just make motor be in the state of running up for a long time, thereby the abrasion of motor and oil pump have been increased, caused unnecessary waste, above-mentioned oil pump also has big, the defectives such as suction capacity is poor, manufacturing process complexity, the expense of taking a lot of work material of noise simultaneously, can not satisfy the requirement of industry.

The model utility content

The purpose of this utility model provides and a kind ofly can overcome above-mentioned defective, simple and reasonable, the blade type refuelling truck oil pump that need not high input speed can keep the works fine performance.Its technological scheme is:

Comprise the pump housing, be arranged on pump, suction chamber and the chamber that spues in the pump housing, wherein correspondence is provided with inlet port, discharge opening on suction chamber, the chamber that spues, it is characterized in that: pump adopts the vane pump that is made of rotor, eccentric bushing, blade, wherein blade is installed in the blade groove of rotor vertically, its exterior edge face fits tightly by the internal surface of centrifugal force and eccentric bushing, have a plurality of apertures on the eccentric bushing, the dividing plate that vertically is provided with in its outer wall and the pump housing is tightly connected, dividing plate is provided with the major diameter return port, has been horizontally disposed with safety valve at the return port place on the pump housing.

Described blade type refuelling truck oil pump, safety valve comprises that valve gap, level are installed in valve body, spring and the adjustment screw on the pump housing, its medi-spring is installed in the valve body, one end and shutoff contact at the valve gap at return port place, the other end contacts with adjusting screw through spring seat, adjusts screw and is threaded with valve body.Can adjust the size of oil pump outlet pressure by adjusting screw like this, be in the clockwise direction during rotation, the pressure of spring increases, the pressure that refluxes increases thereupon, otherwise reduce, when the pressure of oil pump outlet surpassed specified value, the valve gap at return port place was opened automatically, liquid circulates in the pump housing, guarantees the reliability of safety valve.

Described blade type refuelling truck oil pump, inlet port, discharge opening correspondence are arranged on suction chamber, the top in the chamber that spues.

Its working principle is: eccentric bushing adopts compound curve to make, and rotor is formed seal chamber with eccentric bushing, blade be installed in vertically the blade groove of rotor interior seal chamber is partitioned into separate a plurality of.When rotor rotation, change from small to big by blade cavity at interval, form negative pressure and produce suction, the liquid in the suction chamber is just sucked by the aperture table on the eccentric bushing; When rotor rotated to several angle, the volume cross section of cavity extruded the liquid that sucks in the cavity from large to small.

The utility model compared with prior art has following advantage:

1, owing to adopt vane pump not to be subjected to the restriction of input speed, even oil pump also can proper functioning under the engine idling operation situation, satisfy flow and pressure requirement, improved the running efficiency of oil pump, energy-conservation;

2, the eccentric bushing of vane pump is that compound curve is made, and blade fits tightly by centrifugal force and eccentric bushing internal surface, so reduced wearing and tearing, has improved the working life of oil pump;

3, the flow pressure of oil pump can increase with the rotating speed of motor and increases, and is convenient to comprehensive utilization, reliable working performance.

4, self-priming time has shortened 30%～40%, has reduced the idle running time of oil pump, wearing and tearing and the damage of having avoided long-term idle running to bring to part, and self-suction is strong, and is simple in structure.

Description of drawings

Fig. 1 is the utility model embodiment's a structural representation.

Embodiment

1, the pump housing 2, return port 3, dividing plate 4, suction chamber 5, the chamber 6 that spues, inlet port 7, discharge opening 8, rotor 9, eccentric bushing 10, blade 11, blade groove 12, aperture 13, valve body 14, spring 15, valve gap 16, adjustment screw 17, spring seat 18, base

The pump housing 1 is installed on the base 18, its inner bottom part is equipped with vane pump, the cavity that the vane pump and the pump housing 1 constitute is longitudinally spaced into the suction chamber 4 and chamber 5 two-part that spue by the dividing plate 3 that has major diameter return port 2, and the top correspondence in suction chamber 4, the chamber 5 that spues is provided with inlet port 6, discharge opening 7.Corresponding to return port 2, be horizontally disposed with safety valve on the pump housing 1, comprise that valve gap 15, level are installed in valve body 13, the spring 14 on the pump housing 1 and adjust screw 16, its medi-spring 14 is installed in the valve body 13, one end and shutoff contact at the valve gap 15 at return port 2 places, the other end contacts with adjusting screw 16 through spring seat 17, adjusts screw 16 and is threaded with valve body 13.Can adjust the size of oil pump outlet pressure by adjusting screw 16 like this, be in the clockwise direction during rotation, the pressure of spring 14 increases, the pressure that refluxes increases thereupon, otherwise reduce, when the pressure of oil pump outlet surpassed specified value, the valve gap 15 at return port 2 places was opened automatically, liquid circulates in the pump housing 1, guarantees the reliability of safety valve.Vane pump comprises eccentric bushing 9 and the blade 10 that rotor 8, compound curve are made, wherein blade 10 is installed in the blade groove 11 of rotor 8 vertically, its exterior edge face fits tightly by the internal surface of centrifugal force and eccentric bushing 9, has a plurality of apertures 12 on the eccentric bushing 9, and its outer wall and dividing plate 3 are tightly connected.Because eccentric bushing 9 adopts compound curves to make, rotor 8 is formed seal chambers with eccentric bushing 9, blade 10 be installed in vertically in the blade groove 11 of rotor 8 seal chamber is partitioned into separate a plurality of.When rotor 8 rotates, change from small to big by blade 10 cavity at interval, form negative pressure and produce suction, the liquid in the suction chamber 4 is just sucked by the aperture on the eccentric bushing 9 12; When rotor 8 rotated to several angle, the volume cross section of cavity extruded the liquid that sucks in the cavity from large to small.

Claims

1, a kind of blade type refuelling truck oil pump, comprise the pump housing (1), be arranged on the pump in the pump housing (1), suction chamber (4) and the chamber that spues (5), suction chamber (4) wherein, the last correspondence in chamber (5) that spues is provided with inlet port (6), discharge opening (7), it is characterized in that: pump adopts by rotor (8), eccentric bushing (9), the vane pump that blade (10) constitutes, wherein blade (10) is installed in the blade groove (11) of rotor (8) vertically, its exterior edge face fits tightly by the internal surface of centrifugal force and eccentric bushing (9), have a plurality of apertures (12) on the eccentric bushing (9), the dividing plate (3) that vertically is provided with in its outer wall and the pump housing (1) is tightly connected, dividing plate (3) is provided with major diameter return port (2), and the pump housing (1) is gone up and located to be horizontally disposed with safety valve at return port (2).

2, blade type refuelling truck oil pump as claimed in claim 1, it is characterized in that: safety valve comprises that valve gap (15), level are installed in valve body (13), the spring (14) on the pump housing (1) and adjust screw (16), its medi-spring (14) is installed in the valve body (13), the valve gap (15) that one end and shutoff are located at return port (2) contacts, the other end contacts with adjusting screw (16) through spring seat (17), adjusts screw (16) and is threaded with valve body (13).

3, blade type refuelling truck oil pump as claimed in claim 1 is characterized in that: inlet port (6), discharge opening (7) correspondence are arranged on the top of suction chamber (4), the chamber that spues (5).