CN2049698U

CN2049698U - Ultralow speed oil pump capable of ejecting vane automatically

Info

Publication number: CN2049698U
Application number: CN 89201965
Authority: CN
Inventors: 邵锐勋
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-10-06
Filing date: 1988-10-06
Publication date: 1989-12-20

Abstract

The utility model discloses an ultra-low speed oil pump with ejecting blade automatically. The technical field of the utility model belongs to hydraulic machinery. Compared with the ordinary blade type oil pump, the different point is that a spring is arranged at the root of the blade of the utility model. The form is mainly that the blade positioned at the blade groove can be sprung out automatically when the oil pump works in the ultra-low speed state. The inner surface of the stator is snapped by the blade all the time in order to make the oil pump work reliably under the circumstance of ultra-low speed (10-500 r/min).

Description

Ultralow speed oil pump capable of ejecting vane automatically

Technical field under the utility model is a hydraulic machine.

Current, vane oil pump in the world, no matter whether variable to be, realize its reliable oil suction, and its rotating speed must to its research 10～500 rev/mins of such Ultra-Low Speeds operations, but not have in 500～1500 rev/mins scope.For the variable vane oil pump, when mesolow power is used, because it has structure, weight, more advantage in price than other variable displacement hydraulic machines, therefore, expand its performance, make it usage range and enlarge, simplify hydraulic system, great Technological Economy meaning is arranged, the purpose of this utility model that Here it is.

Generally, present vane oil pump is made up of following each part:

1. the pump housing;

2. rotor;

3. stator;

4. left oil distribution casing;

5. right oil distribution casing;

6. blade;

7. pressure limiting spring;

8. adjusting screw;

9. balance spring;

10. bearing;

11. rotatingshaft;

Generally, this pump is when working, and transmission shaft drives rotor and rotates, and the blade that is installed in the blade groove is to rotate the centrifugal force that is produced by rotor high-speed to throw away, and makes blade press inner surface of stator, thereby realization oil suction and pressure oil.But, when the rotating speed of oil pump is lower than 500 rev/mins,, be installed in the blade in the blade groove because rotating speed is too low, then can't lean on above-mentioned centrifugal force to throw away, at this moment, blade just can not press inner surface of stator, thereby make oil sucking window and the oily window of pressure gang up, oil pump failure is inhaled less than oil.

In order to address this problem, vane oil pump can be worked under 10～500 rev/mins Ultra-Low Speed situation, the utility model has taked following measure that blade can be ejected automatically:

Load onto spring at the oil pump root of blade, spring force satisfies presses to the required precompression requirement of stator inner wall to blade, like this, when vane oil pump is worked under the Ultra-Low Speed operating mode, because the effect of spring, blade just can eject automatically, and oil pump can be worked normally.

Below in conjunction with drawings and Examples structural feature of the present invention is described in further detail.

Fig. 1 is the structural drawing of one kind of pattern described in the utility model, and Fig. 2 is a side sectional view.

Referring to Fig. 1, Fig. 2:

Part 1 is represented the pump housing, part 2 is represented rotor, and part 3 is represented stator, the left oil distribution casing of part 4 representatives, the right oil distribution casing of part 5 representatives, part 6 is represented blade, and part 7 is represented the pressure limiting spring, and part 8 is represented adjusting screw, part 9 is represented balance spring, part 10 is represented bearing, and part 11 is represented rotatingshaft, and part 12 is represented spring.

Referring to Fig. 1:

Blade ［ 6 ］ root at oil pump is loaded onto spring ［ 12 ］.In addition, other structures of oil pump are identical with common vane oil pump.

The superiority of this oil pump is: it can carry out work reliably in 10～500 rev/mins Ultra-Low Speed situation, mechanical energy is become hydraulic energy, sets up oil pressure. And it also has higher volumetric efficiency.

Claims

1, a kind of Ultra-Low Speed oil pump of the automatic ejection blade of being made up of the pump housing [1], rotor [2], stator [3], left oil distribution casing [4], right oil distribution casing [5], blade [6], pressure limiting spring [7], adjusting screw [8], balance spring [9], bearing [10], transmission shaft [11] is characterized in that root of blade loads onto spring [12].