CN201428592Y

CN201428592Y - Low voltage variable quantity blade pump

Info

Publication number: CN201428592Y
Application number: CN2009201598623U
Authority: CN
Inventors: 屠宝周
Original assignee: DEKEMA HYDRAULIC MANUFACTURE Co Ltd
Current assignee: DEKEMA HYDRAULIC MANUFACTURE Co Ltd
Priority date: 2009-06-18
Filing date: 2009-06-18
Publication date: 2010-03-24
Anticipated expiration: 2019-06-18

Abstract

The utility model relates to a low voltage variable quantity blade pump, which belongs to the hydraulic transmission and control technical field, and comprises a pump shell, a pump cover and a pump body, wherein the pump body comprises stators, rotors, blades, an allocating disk and a side plate, the stators are arranged in the pump body, the rotors rotate in the stator, are regularly spaced on the peripheral direction, and form narrow slots closing to the external circumference, the blades are arranged in the narrow slots, and the allocating disk and the side plate are arranged on the inner wall of the pump body. The variable quantity blade pump comprises a voltage regulation device, a flow rate regulation device and a noise regulation device which act on a variable quantity pump main body, and the voltage regulation device and the flow rate regulation device are respectively arranged on the two sides of the pump body. The low voltage variable quantity blade pump has the advantages that the whole structure is whole and compact, the volume of the blade pump is reduced, the production cost is reduced through using a powder metallurgy type allocating disk and the side plate, operators can respectively regulate the pressure in the pump body and the flow rate of the pump by hands through the voltage regulation device and the flow rate regulation device.

Description

A kind of low pressure variable vane pump

Technical field:

The utility model belongs to hydraulic transmission and control technique field, is specifically related to a kind of low pressure variable vane pump.

Background technique:

Single acting vane pump is made up of stator, rotor, blade, oil distribution casing, transmission shaft, the pump housing, end cap etc., and eccentric distance e is arranged between stator and rotor, and blade is contained in the rotor, and can in groove, slide, when rotor turns round, because action of centrifugal force makes blade abut against stator inner wall.

Variable vane pump is meant the oil hydraulic pump that discharge capacity can be regulated, it is by changing the eccentric distance e and the eccentric direction of single acting vane pump rotor and stator, change oil transportation amount and oil transportation direction, become variable vane pump, this adjusting can be by manually realizing, also can be by realizing automatically, wherein limited pressure variable vane pump is a kind of dynamical element that utilizes load variations to realize Flow-rate adjustment automatically, its effect is after pressure is elevated to the qualification pressure of preset, flow reduces automatically, therefore is used widely in practice.

The present formula of limiting the quantity of variable vane pump generally all adopts to be installed stroking mechanism and comes the pressure in the variable displacement pump main body is adjusted as the device of adjusting pressure outside the variable displacement pump main body, thereby reach the purpose of control, but this structure is because there is peripheral hardware mechanism in it, therefore hydraulic system integrated low, overall volume is big, and since existing thrust plate and side plate be and cast copper spare, the cost height.

The model utility content:

In order to overcome above-mentioned shortcoming of the prior art, the utility model provides a kind of compact structure, volume is little, cost is low novel low pressure variable vane pump.

The technical solution of the utility model is as follows:

A kind of low pressure variable vane pump, comprise pump case, pump cover and the pump housing, its middle pump body comprises the stator that is contained in the pump housing, in described stator rotation and in a circumferential direction with rule at interval and near its excircle form slit rotor, be arranged on blade in the slit, be arranged on thrust plate and side plate on the pump housing inwall, wherein said variable vane pump also comprises regulator and the flow regulator that acts on stator, and wherein regulator and flow regulator separate from pump housing both sides;

Described regulator comprises the housing that is connected as a single entity with pump case, be arranged in the housing and the top that contacts with stator plug, the pressure regulating cover of seal casinghousing, the pressure regulating screw that passes pressure regulating cover and contact with housing internal pressure-regulating spring seat is provided with pressure adjusting spring between described top plug and the pressure adjusting spring seat;

Described flow regulator comprises and the direct acting Flow-rate adjustment piston of stator that the Flow-rate adjustment piston is connected with flow adjustment screw by the Flow-rate adjustment push rod, and flow adjustment screw is fixed on the pump case and by the flow locking nut by the Flow-rate adjustment nut and locks;

Described thrust plate is a powder metallurgy formula thrust plate, and described side plate is a powder metallurgy formula side plate.

Low pressure variable vane pump in the technique scheme, wherein said variable vane pump also comprises the noise controlling device, described noise controlling device comprises lock screw and retainer nut, described lock screw passes the retainer nut and pump case acts on stator, by regulating lock screw noise is reduced to normally when noise is bigger than normal when variable vane pump uses.

Low pressure variable vane pump in the technique scheme, the housing of wherein said regulator are provided with and rush down hydraulic fluid port, when having liquid to infiltrate in the regulator, in order to guarantee the performance of regulator, the liquid in the regulator are discharged from rushing down hydraulic fluid port.

Owing to adopted above-mentioned technological scheme, the utlity model has following beneficial effect:

1, the utility model has changed the formula variable vane pump of originally limiting the quantity of is installed stroking mechanism outside the variable displacement pump main body structure, regulator and flow regulator are built in the variable vane pump, make the complete compactness of overall structure of variable vane pump, reduced the volume of vane pump.

2, the utility model has been abandoned thrust plate and the side plate that the preparation of copper spare technology is cast in traditional passing through, and has adopted metallurgical formula thrust plate of powder art and side plate, has reduced production cost.

3, the utility model in use, operator can carry out manual adjustment to the flow of pressure in the pump housing and pump by regulator and flow regulator decibel.

Description of drawings:

Fig. 1 is the utility model one embodiment's a erection drawing;

Fig. 2 is the outside schematic representation of Fig. 1;

Fig. 3 is an A-A partial schematic diagram among Fig. 2.

The figure number explanation:

1, pump case; 2, pump cover; 3, the pump housing, 31, stator, 32, rotor, 33, blade, 34 thrust plates, 35, side plate; 4, regulator, 41, housing, 42, the top plug, 43, pressure regulating cover, 44, the pressure adjusting spring seat, 45, pressure regulating screw, 46, pressure adjusting spring, 47, rush down hydraulic fluid port; 5, flow regulator, 51, the Flow-rate adjustment piston, 52, the Flow-rate adjustment push rod, 53, flow adjustment screw, 54, the Flow-rate adjustment nut, 55, the flow locking nut; 6, noise controlling device, 61, lock screw, 62, the retainer nut.

Embodiment:

For the technical solution of the utility model can better be understood, the utility model is further described below in conjunction with Figure of description.

Embodiment 1:

As Fig. 1, Fig. 2 and a kind of low pressure variable vane pump shown in Figure 3, comprise pump case 1, the pump cover 2 and the pump housing 3, its middle pump body 3 comprises the stator 31 that is contained in the pump housing 3, rotation also forms the rotor 32 of slit in a circumferential direction with rule interval and close its excircle in described stator 31, be arranged on the blade 33 in the slit, be arranged on thrust plate 34 and side plate 35 on the pump housing inwall, wherein said variable vane pump also comprises the regulator 4 that acts on stator 31, flow regulator 5 and noise controlling device 6, wherein regulator 4 and flow regulator 5 separate from pump housing both sides;

Described regulator 4 comprises the housing 41 that is connected as a single entity with pump case 1, be arranged in the housing 41 and the top that contacts with stator 31 plug 42, the pressure regulating cover 43 of seal casinghousing 41, the pressure regulating screw 45 that passes pressure regulating cover 43 and contact with housing 41 internal pressure-regulating spring seats 44, be provided with pressure adjusting spring 46 between described top plug 42 and the pressure adjusting spring seat 44, described housing 41 is provided with and rushes down hydraulic fluid port 47;

Described flow regulator 5 comprises and stator 31 direct acting Flow-rate adjustment pistons 51, Flow-rate adjustment piston 51 is connected with flow adjustment screw 53 by Flow-rate adjustment push rod 52, and flow adjustment screw 53 is fixed on the pump case 1 and by flow locking nut 55 by Flow-rate adjustment nut 54 and locks;

Described thrust plate is a powder metallurgy formula thrust plate, and described side plate is a powder metallurgy formula side plate;

Described noise controlling device 6 comprises lock screw 61 and retainer nut 62, and described lock screw 61 passes retainer nut 62 and pump case 1 acts on stator 31.

Working procedure of the present utility model is as follows:

Owing to be eccentric the installation between stator in the vane pump and the rotor, therefore the size of the confined space that forms between two blades and the stator on the rotor when rotor shaft rotates under driven by motor is different, the part that working space increases between blade, pressure reduces, oil suction from the oil sucting cavity of thrust plate; The part that blade space reduces, pressure increases, and oil is extruded from the pumping cavity of thrust plate; Regulator in the utility model directly acts on stator, changes the eccentric angle between stator and the rotor, thereby adjusts the pressure amplitude in the pump housing; Flow regulator also directly acts on stator, and when calling in flow adjustment screw in the pump housing, flow adjustment screw promotes Flow-rate adjustment screw rod and Flow-rate adjustment piston extruding stator, and flow is diminished, and when accessing in the other direction, flow increases.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any formal and substantial restriction, all those skilled in the art, in not breaking away from the technical solutions of the utility model scope, when can utilizing the above technology contents that discloses, and a little change of making, modify the equivalent variations with differentiation, be equivalent embodiment of the present utility model; Simultaneously, all foundations essence technology of the present utility model all still belongs in the scope of the technical solution of the utility model change, modification and the differentiation of any equivalent variations that above embodiment did.

Claims

1, a kind of low pressure variable vane pump, comprise pump case (1), the pump cover (2) and the pump housing (3), its middle pump body (3) comprises the stator (31) that is contained in the pump housing (3), rotation also forms the rotor (32) of slit in a circumferential direction with rule interval and close its excircle in described stator (31), be arranged on the blade (33) in the slit, be arranged on thrust plate (34) and side plate (35) on the pump housing (3) inwall, it is characterized in that: described variable vane pump also comprises regulator (4) and the flow regulator (5) that acts on stator (31), and wherein regulator (4) and flow regulator (5) separate from pump housing both sides;

Described regulator (4) comprises the housing (41) that is connected as a single entity with pump case (1), be arranged in the housing (41) and the top that contacts with stator (31) plug (42), the pressure regulating cover of seal casinghousing (43), the pressure regulating screw (45) that passes pressure regulating cover (43) and contact with housing internal pressure-regulating spring seat (44) is provided with pressure adjusting spring (46) between described top plug (42) and the pressure adjusting spring seat (44);

Described flow regulator (5) comprises and the direct acting Flow-rate adjustment piston of stator (31) (51), Flow-rate adjustment piston (51) is connected with flow adjustment screw (53) by Flow-rate adjustment push rod (52), and flow adjustment screw (53) is fixed on pump case (1) by Flow-rate adjustment nut (54) and goes up and locked by flow locking nut (55);

2, low pressure variable vane pump according to claim 1, it is characterized in that: described variable vane pump also comprises noise controlling device (6), described noise controlling device (6) comprises lock screw (61) and retainer nut (62), and described lock screw (61) passes retainer nut (62) and pump case (1) acts on stator (31).

3, low pressure variable vane pump according to claim 1 is characterized in that: the housing (41) of described regulator (4) is provided with and rushes down hydraulic fluid port (47).