CN201428595Y

CN201428595Y - Double variable quantity blade pump

Info

Publication number: CN201428595Y
Application number: CN2009201598604U
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 double 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 stators, 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 pump body has two, the two pump bodies are arranged on a same shaft, and a variable quantity blade pump further comprises two voltage regulation devices which act on the stators in the two pump bodies. The voltage regulation devices comprise a shell, a top piston, a voltage regulation cover, a voltage regulation screw, a voltage regulation spring and a drain oil port, whereinthe shell is connected with the pump bodies into an integrated body, the top piston is arranged in the shell and contacts with the stators, the voltage regulation cover seals the shell, the voltage regulation screw passes through the voltage regulation cover and contacts with a voltage regulation spring seat in the shell, the voltage regulation spring is arranged between the top piston and the voltage regulation spring seat, and the drain oil port is arranged on the shell. The double variable quantity blade pump has the advantages that the mounting volume is reduced, a hydraulic system is integrated, the use efficiency of a motor is increased, and the production cost is reduced.

Description

A kind of duplex variable vane pump

Technical field:

The utility model belongs to hydraulic transmission and control technique field, is specifically related to a kind of duplex 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.

Present variable vane pump generally all is single independent operating in use, when a plurality of independently variable vane pumps of needs turn round simultaneously, just need a plurality of motors to drive the variable vane pump running respectively as power source, the utilization rate of motor is very low in this case, and also increased in use required space is installed, increased user cost.

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 duplex variable vane pump.

The technical solution of the utility model is as follows:

A kind of duplex 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, the wherein said pump housing is two, and wherein two pump housings are coaxial; Described variable vane pump also comprises two regulators that act on stator in two pump housings;

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.

Duplex variable vane pump in the technique scheme, wherein said thrust plate are powder metallurgy formula thrust plate, and described side plate is a powder metallurgy formula side plate.

Duplex variable vane pump in the technique scheme, wherein said high low pressure unipump 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.

Duplex 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 integrates two variable vane pumps, only needs a motor promptly can drive two pump housings and turns round, and has improved the utilization efficiency of motor.

2, two variable vane pumps are one in the utility model, so its volume reduced installation volume less than the volume sum of two variable vane pumps independently, make hydraulic system integrated.

3, 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 the powder metallurgy formula thrust plate and the side plate that have adopted powder metallurgical technique to make have reduced production cost.

4, the utility model in use, operator can carry out manual adjustment to the pressure in the pump housing by regulator.

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 plate, 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, noise controlling device, 51, lock screw, 52, 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 duplex variable vane pump shown in Figure 3, comprise pump case 1, 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, described stator 31 in rotation and in a circumferential direction with rule at interval and near the rotor 32 of its excircle formation slit, be arranged on blade 33 in the slit, be arranged on thrust plate 34 and side plate 35 on the pump housing inwall, the wherein said pump housing 3 is two, and two pump housings 3 are coaxial; Described variable vane pump also comprises two regulators 4 and the noise controlling device 5 that acts on stator 31 in two pump housings;

Described regulator 4 comprises the housing 41 that is connected as a single entity with pump case 2, 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 thrust plate is a powder metallurgy formula thrust plate, and described side plate is a powder metallurgy formula side plate.

Described noise controlling device 5, described noise controlling device 5 comprises lock screw 51 and retainer nut 52, described lock screw 51 passes retainer nut 52 and pump case 2 acts on stator 31.

Working procedure of the present utility model is as follows:

For the single pump housing, 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; When doing running simultaneously under two drives of the coaxial pump housing, can meet and exceed two independently effects of turning round simultaneously of the pump housing at same motor.

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 duplex variable vane pump, comprise pump case (1), pump cover (2) and the pump housing (3), its middle pump body (3) comprises the stator (31) 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 (32), be arranged on blade (33) in the slit, be arranged on thrust plate (34) and side plate (35) on the pump housing inwall, it is characterized in that: the described pump housing (3) has two, and two pump housings are coaxial; Described variable vane pump also comprises two regulators (4) that act on stator in two pump housings;

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 (44) that passes pressure regulating cover (43) and contact with housing (41) internal pressure-regulating spring seat (43) is provided with pressure adjusting spring (46) between described top plug (42) and the pressure adjusting spring seat (44).

2, duplex variable vane pump according to claim 1 is characterized in that: described thrust plate is a powder metallurgy formula thrust plate, and described side plate is a powder metallurgy formula side plate.

3, duplex variable vane pump according to claim 1, it is characterized in that: described high low pressure unipump also comprises noise controlling device (5), described noise controlling device (5) comprises lock screw (51) and retainer nut (52), and described lock screw (51) passes retainer nut (52) and pump case (1) acts on stator (31).

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