CN213684497U - Gear oil pump with axial flexible structure at upper end for compressor - Google Patents
Gear oil pump with axial flexible structure at upper end for compressor Download PDFInfo
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- CN213684497U CN213684497U CN202022336855.5U CN202022336855U CN213684497U CN 213684497 U CN213684497 U CN 213684497U CN 202022336855 U CN202022336855 U CN 202022336855U CN 213684497 U CN213684497 U CN 213684497U
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Abstract
The utility model provides a gear oil pump with an axial flexible structure at the upper end for a compressor, which comprises a pump shell, an external gear, an internal gear, a fixed sealing piece and a coupling; the pump case is internally provided with a pump oil cavity, the inner gear and the outer gear are meshed into an inner engagement gear set which is arranged in the pump oil cavity and forms a pump oil gap, the fixed sealing piece is arranged at the upper end of the pump case, and the tail end of the coupler is sleeved on the inner gear, particularly: the upper portion of the internal connection meshing type gear set in the oil pumping cavity is further provided with an axial flexible structure, the axial flexible structure comprises a movable sealing sheet and a flexible piece, a movable sheet through hole is formed in the middle of the movable sealing sheet and movably arranged above the internal connection meshing type gear set, a middle through hole is formed in the middle of the flexible piece, the flexible piece is arranged between a fixed sealing sheet and the movable sealing sheet, and the movable sealing sheet can move up and down between the flexible piece and the internal connection meshing type gear set under the stress of the movable sealing sheet to achieve opening or closing of a gap bypass. The utility model discloses running resistance when can reducing high rotational speed has the characteristics of low-power consumption and high reliability.
Description
Technical Field
The utility model relates to a machinery and refrigeration technology field, concretely relates to upper end area axial flexible construction's high reliability oil pump.
Background
Due to the trend that the existing compressor develops from a constant speed machine to a frequency converter, the original fixed rotating speed of the compressor is expanded to a plurality of low-speed, medium-speed and high-speed rotating speed intervals, and the traditional gear oil pump with linearly related oil supply and rotating speed cannot perfectly adapt to different oil quantity requirements of the frequency converter compressor from the low speed to the high speed. An axial flexible structure is not arranged between a fixed sealing sheet and an inner gear and an outer gear of a gear oil pump of the existing compressor. When the compressor operation is during high rotational speed, traditional gear oil pump receives the influence of resistance, its running resistance can increase, causes the increase of consumption, and the wearing and tearing of oil pump gear also can corresponding aggravation, so an oil pump that can adapt to high rotational speed frequency conversion compressor and have high reliability is urgently needed to market.
Disclosure of Invention
The utility model aims at providing a gear oil pump of upper end area axial flexible construction for compressor, it can be little at high rotational speed running resistance, has the characteristics of low-power consumption and high reliability when reducing the fuel feeding.
The utility model discloses a following technical scheme of purpose accessible realizes:
a gear oil pump with an axially flexible structure at the upper end for a compressor comprises a pump shell, an external gear, an internal gear, a fixed sealing piece and a coupling; the pump shell is internally provided with a vertically arranged pump shaft hole and a transversely arranged transverse bottom plate, a pump oil cavity is arranged above the transverse bottom plate in the pump shaft hole, the edge part of the transverse bottom plate is provided with an oil suction hole, and the top surface of the transverse bottom plate is provided with an oil discharge groove extending from the middle part to the edge part; the inner gear is arranged in the outer gear and meshed with the outer gear to form an internally-connected meshed gear set which is arranged in a pump oil cavity of the pump shell, a gap between the outer gear and the inner gear forms a pump oil gap, the middle part of the fixed sealing piece is provided with a fixed piece through hole which is arranged at the upper end of the pump shell to seal and block the internally-connected meshed gear set in the pump oil cavity; the middle part of the shaft coupling is provided with a shaft through hole, and the tail end of the shaft coupling movably penetrates through a stator plate through hole of a fixed sealing plate to be sleeved on an inner gear of the internally-connected meshed gear set, and the shaft coupling is characterized in that: an axial flexible structure is further arranged above the internally-connected meshed gear set in the pump oil cavity, the axial flexible structure comprises a movable sealing sheet and a flexible piece, the movable sealing sheet is of a sheet structure with a movable sheet through hole in the middle and is movably arranged above the internally-connected meshed gear set in the pump oil cavity, the flexible piece is an elastic piece with a middle through hole, the flexible piece is arranged between a fixed sealing sheet and a movable sealing sheet in the pump oil cavity and is tightly pressed towards the movable sealing sheet, and the movable sealing sheet can move up and down between the flexible piece and the internally-connected meshed gear set under the stress to open or close a gap bypass between the movable sealing sheet and the internally-connected meshed gear set; the tail end of the coupler sequentially and movably penetrates through the middle through hole of the flexible part and the moving plate through hole of the movable sealing plate to be sleeved on the inner gear.
Optimize the scheme, the utility model provides a flexible piece adopts the wave spring structure.
The utility model has the following substantive characteristics and progress: the utility model discloses under the prerequisite of guaranteeing compressor lubricating oil demand, through opening the oil absorption chamber in the pump oil clearance of axial flexible structure messenger inscription meshing shape gear train and arrange the oil chamber between and form the bypass through the clearance bypass when high-speed operation, the consumption of oil pump when can effectively reducing high-speed operation promotes the holistic efficiency level of compressor and improves the reliability of compressor.
Drawings
Fig. 1 is a schematic structural view of the present invention in a closed state of the axial flexible structure.
Fig. 2 is a schematic structural view of the present invention in an open state of the axial flexible structure.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Examples
Referring to fig. 1 and 2, a gear oil pump with an axially flexible structure at the upper end for a compressor comprises a pump shell 1, an external gear 2, an internal gear 3, an axially flexible structure, a fixed sealing sheet 6 and a coupling 7.
The pump casing 1 is internally provided with a vertically arranged pump shaft hole 11 and a horizontally arranged horizontal bottom plate 12, a pump oil chamber is arranged above the horizontal bottom plate 12 in the pump shaft hole 11, the edge part of the horizontal bottom plate 12 is provided with an oil suction hole 13, and the top surface of the horizontal bottom plate is provided with an oil discharge groove 14 extending from the middle part to the edge part.
The internal gear 3 is arranged in the external gear 2 and meshed with the external gear 2 to form an internal meshing gear set which is arranged in a pump oil cavity of the pump shell 1, and a gap between the external gear 2 and the internal gear 3 forms a pump oil gap 10.
The middle part of the fixed sealing sheet 6 is provided with a fixed sheet through hole which is arranged at the upper end of the pump shell 1 and seals and blocks the internally meshed gear set in the oil cavity of the pump.
The axial flexible structure is arranged above the meshing gear set internally connected in the oil pumping cavity and comprises a movable sealing sheet 4 and a flexible part 5. The movable sealing sheet 4 is of a sheet structure with a movable sheet through hole in the middle and is movably arranged above the internally-connected meshing gear set in the oil pumping cavity. The flexible piece 5 is of a wave spring structure with a through hole in the middle, and the flexible piece 5 is arranged between the fixed sealing piece 6 and the movable sealing piece 4 in the oil pumping cavity and is pressed towards the movable sealing piece 4. The movable sealing sheet 4 can move up and down under the stress between the flexible piece 5 and the internal meshing type gear set, and the oil pumping gap 10 of the internal meshing type gear set is blocked or unblocked, so that the gap bypass 40 is opened or closed between the movable sealing sheet 4 and the internal meshing type gear set.
The middle part of the coupling 7 is provided with a shaft through hole 71, and the tail end of the shaft through hole is sequentially and movably sleeved on the inner gear 3 of the internal engagement gear set through a stator plate through hole of the fixed sealing plate 6, a middle through hole of the flexible part 5 and a rotor plate through hole of the movable sealing plate 4.
In operation of the gear oil pump of this embodiment, the coupling 7 is connected to the crankshaft (not shown) and the internal gear 3, the coupling 7 drives the internal engagement gear set to operate, the lubricating oil is pressed into the central hole of the internal gear 3 through the oil discharge groove 14 by the oil discharge cavity of the pump oil gap 10 along with the operation of the internal engagement gear set, and then the oil is supplied to the outside through the shaft through hole 71 of the coupling 7.
When the compressor runs at a low speed, the oil pumping amount of the oil pump is small, the outlet resistance is small, the axial flexible structure of the oil pump is closed at the moment, namely the movable sealing sheet is tightly attached to the internally-connected meshed gear set, the rotating speed and the oil supply amount of the oil pump are linearly related, and the reliability of the low-speed running interval of the compressor is guaranteed.
When the compressor runs at a high speed, the oil pumping amount of the oil pump is large, the outlet resistance is increased, at the moment, because the pressure on the side of the internal meshing type gear set is increased when the oil pump works, the axial flexible structure of the oil pump is opened, namely, a gap bypass 40 which changes along with the change of the rotating speed is generated between the movable sealing sheet 4 and the internal meshing type gear set, part of lubricating oil returns to an oil suction cavity from an oil discharge cavity of the internal meshing type gear set through the gap bypass 40, the oil pumping amount of the oil pump is reduced, the effects of reducing the power loss of the oil pump and reducing the axial stress of the gear shaft are achieved, and the reliability of.
Claims (2)
1. A gear oil pump with an axially flexible structure at the upper end for a compressor comprises a pump shell (1), an external gear (2), an internal gear (3), a fixed sealing piece (6) and a coupling (7); the pump shell (1) is internally provided with a vertically arranged pump shaft hole (11) and a horizontally arranged horizontal bottom plate (12), a pump oil cavity is arranged above the horizontal bottom plate (12) in the pump shaft hole (11), the edge part of the horizontal bottom plate (12) is provided with an oil suction hole (13), and the top surface is provided with an oil discharge groove (14) extending from the middle part to the edge part; the inner gear (3) is arranged in the outer gear (2) and meshed with the outer gear (2) to form an inner meshed gear set which is arranged in a pump oil cavity of the pump shell (1), a pump oil gap (10) is formed by a gap between the outer gear (2) and the inner gear (3), a stator perforation is arranged in the middle of the fixed sealing sheet (6), and the fixed sealing sheet is arranged at the upper end of the pump shell (1) to seal and block the inner meshed gear set in the pump oil cavity; the middle part of shaft coupling (7) has axle through-hole (71), and its end activity passes stator perforation suit on internal gear (3) of internal toothing shape gear train of fixed mounting (6), its characterized in that: an axial flexible structure is further arranged above the internally-connected meshed gear set in the pump oil cavity, the axial flexible structure comprises a movable sealing sheet (4) and a flexible part (5), the movable sealing sheet (4) is of a sheet structure with a movable sheet through hole in the middle and is movably arranged above the internally-connected meshed gear set in the pump oil cavity, the flexible part (5) is an elastic part with a middle through hole, the flexible part (5) is arranged between a fixed sealing sheet (6) and the movable sealing sheet (4) in the pump oil cavity and is tightly pressed towards the movable sealing sheet (4), the movable sealing sheet (4) can move up and down between the flexible part (5) and the internally-connected meshed gear set under stress, and a gap bypass (40) is opened or closed between the movable sealing sheet (4) and the internally-connected meshed gear set; the tail end of the coupling (7) sequentially and movably penetrates through a middle through hole of the flexible part (5) and a moving plate through hole of the movable sealing plate (4) to be sleeved on the inner gear (3).
2. The gear oil pump with the axially flexible structure at the upper end for the compressor as set forth in claim 1, wherein: the flexible part (5) adopts a wave spring structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022336855.5U CN213684497U (en) | 2020-10-20 | 2020-10-20 | Gear oil pump with axial flexible structure at upper end for compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022336855.5U CN213684497U (en) | 2020-10-20 | 2020-10-20 | Gear oil pump with axial flexible structure at upper end for compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213684497U true CN213684497U (en) | 2021-07-13 |
Family
ID=76758545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022336855.5U Active CN213684497U (en) | 2020-10-20 | 2020-10-20 | Gear oil pump with axial flexible structure at upper end for compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213684497U (en) |
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2020
- 2020-10-20 CN CN202022336855.5U patent/CN213684497U/en active Active
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