CN2052829U

CN2052829U - Automatically spreading impeller ultra low speed oil pump

Info

Publication number: CN2052829U
Application number: CN 88214704
Authority: CN
Inventors: 邵锐勋
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-10-06
Filing date: 1988-10-06
Publication date: 1990-02-14

Abstract

The utility model relates to an automatically spreading impeller ultra low speed oil pump belonging to the technical field of hydraulic machinery. Compared with normal impeller type oil pumps, the utility model is characterized in that a stator or an impeller is manufactured by permanent magnetic materials; a rotor is manufactured through the adoption of resisting magnetic materials. The characteristics of the utility model primarily enable the impeller arranged in an impeller groove to automatically extend out of the impeller groove when the oil pump runs at an ultra low speed; the impeller always tightly presses the inner surface of the stator, and thereby, the oil pump can reliably work under the condition of the ultra low speed (10 to 500 circles per minute).

Description

Automatically spreading impeller ultra low speed oil pump

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 stretched out automatically:

Usually, the stator of oil pump, rotor, blade all adopt the non-ferrous materials of refusing magnetic to make.Characteristics of the present utility model are: the material of stator adopts a kind of permanent magnetic alloy, rotor with alloyed steel intensity and hardness to adopt and refuses the magnetic made.Like this, have the stator of the action of a magnetic field, magnetized blade at once,, blade is all contacted in any position of rotor with inner surface of stator blade sucking-off from blade groove; The size of its contact force can reach predetermined requirement by the adjusting to the magnetic stator magnetic intensity.In like manner, also can allow blade adopt permanent-magnet alloy, rotor to adopt and refuse the magnetic made.Therefore, by blade, stator inner surface, rotor outer surface, the closed volume that blade and oil distribution casing form, irrelevant with the rotating speed of rotor, rotor is able under the state of Ultra-Low Speed, makes oil pump produce oil suction and pressure oil.

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, and part 2 is represented rotor, and part 3 is represented stator, the left oil distribution casing of part 4 representatives, and 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, and part 9 is represented balance spring, and part 10 is represented bearing, and part 11 is represented rotatingshaft,

Referring to Fig. 1:

Stator of oil pump ［ 3 ］ or blade ［ 6 ］ are the permanent-magnet material manufacturings, and rotor ［ 2 ］ adopts refuses the magnetic made.The material of other parts is identical with the part material of 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 forming by 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] that stretches out blade automatically, it is characterized in that oil pump stator [3] or blade [6] are by the permanent-magnet material manufacturing, rotor [2] adopts refuses the magnetic made.