CN209925200U - Planetary rotary vane pump - Google Patents

Abstract

The utility model discloses a planet rotary type impeller pump, including stator and blade, the stator include outer stator and inner stator, outer stator cup joint the one side at the inner stator, outer stator interpolation be equipped with the cylinder body, outer stator inner wall be equipped with the inner curved surface, the inner stator outer wall be equipped with the outer curved surface, the blade be located the region that outer stator, inner stator, cylinder body enclose in, just the blade both ends link to each other with inner curved surface, outer curved surface laminating respectively, the blade both sides link to each other with inner stator bottom surface, the laminating of cylinder body side respectively, cylinder body one side be equipped with planetary gear, the blade pass through the blade axle and be connected with planetary gear. The utility model discloses a planet rotary type impeller pump for the blade is the compound motion form of constituteing by two rotary motion, effectively reduces vibration and noise, has the characteristics of volume efficiency height, application scope guangZhou, motion stationary.

Description

Planetary rotary vane pump

Technical Field

The utility model relates to a vane pump technical field, more specifically say, it relates to a planet rotary type vane pump.

Background

The vane pump is a positive displacement pump, is applied to a hydraulic transmission and control system, is used as a medium-low pressure hydraulic pump, and is particularly widely applied to engineering machinery and manufacturing equipment. The traditional vane pump mainly comprises a rotor and a stator, wherein a plurality of vane grooves are formed in the rotor along the radial direction, vanes are placed in the grooves, the vanes revolve around a driving shaft along with the rotor, meanwhile, the vanes reciprocate relative to the rotor along the grooves, the reciprocating motion of the vanes is restricted by an inner curved surface of the stator, and the vanes are subjected to acceleration and deceleration motion along the radial divergent direction of the rotor under the action of centrifugal inertia and acceleration and deceleration motion towards the axial center direction under the restriction of the inner curved surface of the stator; the volume of the space swept by the movement of the blades is periodically and regularly changed along with the movement of the rotor, the process of sucking liquid is realized when the volume is increased, and the process of discharging liquid is realized when the volume is decreased; this alternating reciprocating motion of suction and discharge is the basic operating principle of positive displacement pumps.

The main disadvantages of such conventional vane pumps are: (1) good lubricating conditions are required, and the lubricating oil is generally suitable for hydraulic oil as a medium but not suitable for water or seawater; (2) the moving parts in the pump only have the rotor which rotates, and the blades are in compound motion formed by superposition of the rotation motion (revolution) of the rotor and the reciprocating motion relative to the rotor, so the vibration and the noise are serious; (3) the motion of the blades relative to the rotor is reciprocating motion, the acceleration and deceleration motion towards the axial center direction under the constraint of the inner curved surface of the stator is subjected to the centrifugal inertia effect to perform the acceleration and deceleration motion along the radial divergence direction of the rotor, which is not a fixed motion track of mechanical constraint, so that the acceleration and deceleration motion of the blades along the radial divergence direction of the rotor under the centrifugal inertia effect can be influenced due to the friction resistance, thereby generating the fault of the pump or influencing the reliability of the vane pump.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is not enough to the above-mentioned of prior art, provides a planet rotary type impeller pump for the blade is the compound motion form of compriseing two rotary motion, effectively reduces vibration and noise, has the characteristics that the volume efficiency is high, application scope is wide, the motion is steady.

The technical scheme of the utility model is like this: the utility model provides a planet rotary type vane pump, includes stator and blade, the stator include outer stator and inner stator, outer stator cup joint the one side at the inner stator, outer stator interpolation be equipped with the cylinder body, outer stator inner wall be equipped with the inner curved surface, the inner stator outer wall be equipped with the outer curved surface, the blade be located the region that outer stator, inner stator, cylinder body enclose in, just blade both ends respectively with inner curved surface, outer curved surface laminating link to each other, the blade both sides respectively with inner stator bottom surface, cylinder body side laminating link to each other, cylinder body one side be equipped with planetary gear, the blade pass through the blade axle and be connected with planetary gear.

Furthermore, the center of the cylinder body is connected with a transmission shaft through a key, and the transmission shaft penetrates through the outer stator and extends to the outer side of the inner stator.

Furthermore, the planetary gear train comprises a sun gear, a gear ring and a plurality of planet gears, the planet gears are fixedly connected with the blade shaft, and the planet gears are respectively connected with the sun gear and the gear ring in a meshed mode.

Furthermore, an end cover is arranged on one side of the planetary gear train, the end cover is inserted on the outer stator, the sun gear is installed in the center of the end cover, and the gear ring is installed on the periphery of the end cover.

Further, the rotating speed ratio of the cylinder body to the vane shaft is 2: 1.

Further, the cylinder body is in clearance sealing fit connection with the outer stator.

Furthermore, both ends of the blade are semi-cylindrical surfaces.

Compared with the prior art, the utility model, have following advantage:

1. the utility model discloses a planet rotary type impeller pump drives the cylinder body through the transmission shaft and rotates, and the blade is along with the cylinder body revolution to under the mating reaction of blade axle and planetary gear, the blade rotation makes the blade be the compound motion form of constituteing by two rotary motion, effectively reduces vibration and noise, can be applied to the design and the manufacturing of the pump bodies such as hydraulic pump, sea water pump and domestic water working shaft, has the characteristics that the volume efficiency is high, application scope is wide, the motion is steady.

2. The utility model discloses a planet rotary type impeller pump forms sealed work between two adjacent blades and holds the chamber, can effectively prevent circumference leakage to improve the volume efficiency.

3. The utility model discloses a planet rotary type impeller pump adopts clearance seal's cooperation connected mode between its cylinder body and the outer stator, when being full of liquid in the outer stator, can form slide bearing support to the cylinder body, further improves the stationarity of motion.

Drawings

FIG. 1 is a schematic diagram of the present invention;

fig. 2 is a schematic sectional view of the present invention.

Wherein: 1-blade, 2-outer stator, 3-inner stator, 4-cylinder, 5-inner curved surface, 6-outer curved surface, 7-blade shaft, 8-transmission shaft, 9-sun gear, 10-planet gear, 11-end cover, 12-gear ring.

Detailed Description

The invention will be further described with reference to specific embodiments shown in the drawings.

Referring to fig. 1-2, the present invention relates to a planetary rotary vane pump, which comprises a stator and vanes 1, wherein the stator comprises an outer stator 2 and an inner stator 3, the outer stator 2 is a stepped sleeve, and can be connected to a pump body by a positioning pin and an inner hexagon bolt, the inner stator 3 is a T-shaped stator, the outer stator 2 is sleeved on one side of the inner stator 3, i.e. the outer stator 2 is sleeved on the smallest end of the inner stator 3, and the step surface of the inner stator 3 is fixedly connected to the side surface of the outer stator 2, a gap is provided between the inner stator 3 and the outer stator 2, the outer stator 2 and the inner stator 3 are designed in a split type, which is convenient for disassembly and maintenance, a cylinder 4 is inserted in the outer stator 2, the cylinder 4 is a cylinder, and is used as a rotor of the vane pump, and is inserted in a counter bore of the outer stator 2, an inner curved surface 5 is provided on the inner wall of the outer stator 2, correspondingly, the outer wall of the inner stator 3 is provided with an outer curved surface 6, the outer curved surface 6 is formed by fitting and processing according to the motion trail of the lower end part of the blade 1, wherein the blade 1 is positioned in the area surrounded by the outer stator 2, the inner stator 3 and the cylinder body 4, two ends of the blade 1 are respectively connected with the inner curved surface 5 and the outer curved surface 6 in an attaching manner, two sides of the blade 1 are respectively connected with the bottom surface of the inner stator 3 and the side surface of the cylinder body 4 in an attaching manner, and a sealed working cavity is formed between two adjacent blades 1; a planetary gear train is provided on the cylinder 4 side, and the vane 1 is connected to the planetary gear train via a vane shaft 7, and the rotation of the vane 1 is controlled by the planetary gear train.

Specifically, a transmission shaft 8 is coupled to the center of the cylinder block 4 by a key, and the transmission shaft 8 extends through the outer stator 2 to the outside of the inner stator 3 so as to be connected to a power source. The planetary gear train comprises a sun gear 9, a gear ring 12 and a plurality of planet gears 10, the planet gears 10 are fixedly connected with the blade shafts 7 in a one-to-one correspondence manner, the blade shafts 7 can be rotatably installed in the cylinder body 4 through bearings, the planet gears 10 are respectively connected with the sun gear 9 and the gear ring 12 in a meshing manner, and the planet gears 10 drive the blade shafts 7 to rotate while the planet gears 10 rotate around the sun gear 9; an end cover 11 is arranged on one side of the planetary gear system, the end cover 11 is inserted on the outer stator 2, the sun gear 9 is arranged in the center of the end cover 11, and the ring gear 12 is arranged on the periphery of the end cover 11.

In the planetary rotary vane pump of the embodiment, the vane 1 is positioned between the inner curved surface 5 of the outer stator 2 and the outer curved surface 6 of the inner stator 3, when the pump works, the cylinder body 4 is driven to rotate through the transmission shaft 8, the vane 1 revolves around the central shaft of the stator along with the cylinder body 4, and under the matching action of the vane shaft 7 and the planetary gear train, the vane 1 rotates to enable the vane 1 to be in a compound motion form consisting of two rotary motions, at the moment, the sealed working cavity formed by two adjacent vanes 1 is periodically increased or decreased, and when the volume of the sealed working cavity is increased, a liquid suction process is generated; when the volume of the sealed working cavity is reduced, a process of discharging liquid is generated; each sealed working cavity rotates for a circle along with the cylinder body 4 and sequentially passes through five continuous stages of cavity formation, volume increase, transfer, volume reduction and cavity extinction to form a positive displacement pump to work, so that vibration and noise are effectively reduced, the positive displacement pump can be applied to design and manufacture of pump bodies such as hydraulic pumps, seawater pumps and domestic water supply pumps, and the positive displacement pump has the characteristics of high volume efficiency, wide application range and stable motion.

The rotation speed ratio of the cylinder body 4 to the blade shaft 7 is 2:1, namely, each blade 1 rotates for half a circle every time the cylinder body 4 rotates for one circle, and the rotation speed ratio can be realized by controlling the transmission ratio between the planet wheel 10 and the sun wheel 9; when the cylinder body 4 rotates for the first circle, the inner curved surface 5 of the outer stator 2 is formed by the motion track of the upper end of the blade 1, and the outer curved surface 6 of the inner stator 3 is formed by the motion track of the lower end of the blade 1; when the cylinder body rotates for the second circle, the motion track of the lower end of the vane 1 is coincided with the inner curved surface 5 of the outer stator 2, the motion track of the upper end of the vane 1 is coincided with the outer curved surface 6 of the inner stator 3, and the continuous operation is repeated and started.

The cylinder body 4 is connected with the outer stator 2 in a clearance sealing fit mode, and when the outer stator is filled with liquid, the cylinder body can be supported by a sliding bearing, so that the movement stability is further improved. Both ends of the blade 1 are semi-cylindrical surfaces, so that the sealing effect is met, the friction force between the blade 1 and the inner curved surface 5 and between the blade 1 and the outer curved surface 6 is properly reduced, and the rotating resistance and noise of the blade 1 are further reduced.

Claims (7)

1. A planetary rotary vane pump comprising a stator and vanes (1), characterized in that, the stator comprises an outer stator (2) and an inner stator (3), the outer stator (2) is sleeved on one side of the inner stator (3), a cylinder body (4) is inserted in the outer stator (2), an inner curved surface (5) is arranged on the inner wall of the outer stator (2), the outer wall of the inner stator (3) is provided with an outer curved surface (6), the blades (1) are positioned in an area surrounded by the outer stator (2), the inner stator (3) and the cylinder body (4), and two ends of the blade (1) are respectively jointed and connected with the inner curved surface (5) and the outer curved surface (6), two sides of the blade (1) are respectively jointed and connected with the bottom surface of the inner stator (3) and the side surface of the cylinder body (4), one side of the cylinder body (4) is provided with a planetary gear train, and the blade (1) is connected with the planetary gear train through a blade shaft (7).

2. A planetary rotary vane pump according to claim 1, characterized in that the cylinder block (4) is centrally keyed with a drive shaft (8), said drive shaft (8) extending through the outer stator (2) to the outside of the inner stator (3).

3. A planetary rotary vane pump according to claim 1, characterized in that the planetary gear comprises a sun wheel (9), a ring wheel (12) and a plurality of planet wheels (10), the planet wheels (10) being fixedly connected to the vane shaft (7), the planet wheels (10) being in meshing connection with the sun wheel (9) and the ring wheel (12), respectively.

4. A planetary rotary vane pump as claimed in claim 3, wherein an end cap (11) is further provided at one side of the planetary gear train, the end cap (11) is inserted into the outer stator (2), the sun gear (9) is installed at a central position of the end cap (11), and the ring gear (12) is installed at an outer periphery of the end cap (11).

5. A planetary rotary vane pump according to claim 1, wherein the rotational speed ratio of the cylinder block (4) to the vane shaft (7) is 2: 1.

6. A planetary rotary vane pump as in any of claims 1-5, characterized in that the cylinder block (4) is in clearance-tight fit with the outer stator (2).

7. A planetary rotary vane pump according to claim 6, wherein the vanes (1) are semi-cylindrical at both ends.

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