CN116221604A

CN116221604A - Pump valve filters multistage lubricating oil pump of integration

Info

Publication number: CN116221604A
Application number: CN202310079411.3A
Authority: CN
Inventors: 赵亮; 莫延亮; 王亚飞; 孔青松; 王姗姗; 张红涛; 刘亚喆; 李争彪; 宋林蔚; 刘亚平
Original assignee: Henan Aerospace Hydraulic and Pneumatic Technology Co Ltd
Current assignee: Henan Aerospace Hydraulic and Pneumatic Technology Co Ltd
Priority date: 2023-02-08
Filing date: 2023-02-08
Publication date: 2023-06-06

Abstract

The utility model discloses a pump valve and filter integrated multistage lubricating oil pump, which comprises a pump shell, wherein a pump main shaft is arranged in the pump shell, a rotor assembly of an integrated oil return pump and a rotor assembly of a booster stage pump are sequentially arranged in the pump shell along the pump main shaft, the integrated oil return pump is formed by sequentially connecting at least two oil return pumps, an anti-siphon valve is arranged at an oil inlet of the booster stage pump, a safety valve is arranged at an oil outlet of the booster stage pump, and filters are arranged at the oil outlets of the integrated oil return pump and the booster stage pump. According to the utility model, the anti-siphon valve is arranged at the oil inlet of the booster pump in the lubricating oil pump, so that the backflow of oil in the pump body to the lubricating system after the engine is stopped is avoided, and the filters are arranged at the oil inlet and outlet of the lubricating oil pump, so that not only is dirt and impurities prevented from entering the pump body, but also the impurities generated by the rotation running-in of the cycloid gear are prevented from entering the oil supply system, and further, the phenomenon that the impurities in the pump body are returned to the engine to influence the operation and the service life of the engine is avoided.

Description

Pump valve filters multistage lubricating oil pump of integration

Technical Field

The utility model relates to the technical field of hydraulic pumps, in particular to a pump-valve-filter integrated multistage lubricating oil pump.

Background

The lubricating oil system is one of key working systems of the engine, and has the functions of lubricating, cooling, cleaning and corrosion prevention on the mutually moving parts such as a bearing, a gear and the like of the engine. Since the rotor of an engine is operated at high rotational speeds, the reliability of the engine's performance is largely dependent on the proper operation of the lubricating oil system. Therefore, the oil supply pressure and the oil flow rate of the oil are main influencing factors of the oil system. The lubricating oil pump is an important component of the lubricating oil system, and meanwhile, the lubricating oil pump is an important guarantee for meeting the working performance of the lubricating oil system.

The Chinese patent with the publication number of CN209444392U discloses a multistage oil pump, which comprises a pump body, an oil suction pump core, a first-stage oil return pump core and a second-stage oil return pump core are sequentially arranged in series in the pump body, the oil suction pump core is arranged in a first cavity of the pump body, the first-stage oil return pump core and the second-stage oil return pump core are arranged in a second cavity of the pump body, and the first cavity and the second cavity are arranged in a separated mode. The multistage oil pump reduces the occupied space of the lubricating oil pump and ensures that the lubricating oil pump works more reliably. However, after the engine is stopped, oil in the pump body flows back to the lubricating oil system, impurities are generated due to the fact that the cycloid gear in the lubricating oil pump rotates and runs in, and the oil is laminated to form the impurities, so that once the oil in the pump body flows back to the lubricating system, the impurities in the pump body flow to the lubricating oil system and are further diffused into the engine, and the operation and the service life of the engine are affected.

Disclosure of Invention

Aiming at the defects in the background art, the utility model provides a pump, valve and filter integrated multistage lubricating oil pump, which solves the technical problems that in the prior art, oil in a pump body of the lubricating oil pump flows back to a lubricating oil system after an engine is stopped, impurities in the pump body are returned to the engine, and the operation and the service life of the engine are influenced.

The technical scheme of the utility model is realized as follows: the utility model provides a multistage lubricating oil pump of integration is strained to pump valve, includes the pump housing, be equipped with the pump main shaft in the pump housing, the inside rotor subassembly that is equipped with integrated back oil pump and the rotor subassembly of booster stage pump in proper order along the pump main shaft of pump housing, integrated back oil pump includes two at least back oil pumps, booster stage pump's oil inlet department is equipped with the anti-siphon valve, booster stage pump's oil-out department is equipped with the relief valve, integrated back oil pump and booster stage pump's oil-out department all is equipped with the filter.

One end of the pump main shaft extends out of the pump shell and is connected with a driven gear, the rotary main shaft is connected with a driving gear, and the driving gear is meshed with the driven gear; the other end of the pump main shaft extends out of the pump housing, and a pump cover for protecting the pump main shaft is detachably connected to the pump housing.

When the integrated scavenging pump comprises at least two scavenging pumps, at least four valve plates are arranged on a main shaft of the pump, and scavenging pumps or booster pumps are arranged between two adjacent valve plates; each oil return pump on the integrated oil return pump corresponds to one oil inlet and one oil outlet respectively.

The rotor assembly of the integrated scavenge pump and the rotor assembly of the booster pump comprise an eccentric shell, an outer rotor and a cycloid inner rotor, the cycloid inner rotor is fixedly connected with a main shaft of the pump, the cycloid inner rotor is meshed with the outer rotor, and the cycloid inner rotor and the outer rotor are both arranged in the eccentric shell.

And oil return level oil inlets which are in one-to-one correspondence with the oil inlets of the oil return pump are arranged on the pump shell. The filter comprises an oil return level filter and an oil supply level filter, and the oil return level filter is arranged at the oil inlet of the oil return level. And the pump shell is provided with oil return stage oil outlets which are communicated with the oil outlets of the oil return pump.

The pump shell is provided with an oil supply level oil inlet and an oil supply level oil outlet, the oil supply level oil inlet corresponds to the oil inlet of the booster level pump, and the oil supply level oil outlet corresponds to the oil outlet of the booster level pump.

The anti-siphon valve is positioned at the oil inlet of the oil supply stage; the oil supply stage filter and the safety valve are respectively arranged at the oil supply stage oil outlet. The safety valve is a plug-in type safety valve.

The utility model is mainly formed by integrating five oil return pumps, a booster pump, a safety valve, a filter, an anti-siphon valve and other parts, thus forming the lubricating oil pump designed by the utility model, the anti-siphon valve is arranged at the oil inlet of the booster pump in the lubricating oil pump, so that the oil in the pump body flows back to the lubricating system after the engine is stopped, the filter is arranged at the oil inlet and outlet of the lubricating oil pump, not only the dirt and impurities are prevented from entering the pump body, but also the impurities generated by the running-in of the cycloid gear are prevented from entering the oil supply system, and the technical problems that the oil in the pump body flows back to the lubricating oil system after the engine is stopped, the impurities in the pump body flow back to the engine, and the operation and the service life of the engine are influenced are solved. The integrated design mode fully utilizes the space of the lubricating oil pump, has compact structure and small volume, and meets the requirement of compact structure of aerospace components; meanwhile, the oil return efficiency is greatly improved, and the efficiency of the lubricating oil pump is further improved. The problem of among the prior art lubricating oil pump integrate not high, lubrication efficiency is lower is solved. Two cartridge type safety valves are integrated on the lubricating oil pump shell, the opening pressure of the safety valves can be set according to corresponding requirements, the maximum outlet pressure of the lubricating oil pump is limited, and the safety valves are connected in a cartridge type manner, so that later disassembly, assembly and replacement are more convenient.

Drawings

In order to more clearly illustrate the embodiments of the present utility model, the drawings that are required for the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the present utility model and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

Fig. 1 is a front view of the present utility model.

Fig. 2 is a side view of the present utility model.

Fig. 3 is a cross-sectional view of the present utility model.

In the figure, a pump housing 1, a pump spindle 2, a rotating spindle 3, an integrated oil return pump 4, a booster stage pump 5, an oil return stage oil inlet 6, an oil return stage oil outlet 7, an oil return stage filter 8, an oil supply stage oil inlet 9, an oil supply stage oil outlet 10, an anti-siphon valve 11, an oil supply stage filter 12, a safety valve 13, a pump cover 14, a valve plate 15, an eccentric housing 16, an outer rotor 17 and an inner rotor 18.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 and 3, embodiment 1, a pump valve filters multistage lubricating oil pump of integration, including pump housing 1, be equipped with pump spindle 2 in the pump housing 1, pump housing 1 is inside to be equipped with the rotor subassembly of integrated back oil pump 4 and the rotor subassembly of booster stage pump 5 in proper order along pump spindle 2, integrated back oil pump 4 includes two at least back oil pumps, booster stage pump 5's oil inlet department is equipped with anti-siphon valve 11, booster stage pump 5's oil-out department is equipped with relief valve 13, and integrated back oil pump 4 and booster stage pump 5's oil-out department all is equipped with the filter. The preferred integrated scavenging pump 4 is formed by five scavenging pumps connected in series. The five oil return pumps and the booster pump are cycloidal gear pumps to form a six-stage cycloidal gear pump. The utility model sets up the filter in the oil pump inlet, outlet, not only avoids the dirt impurity to get into the pump body, but also avoids the impurity that the cycloid gear rotates and runs in to get into the oil feeding system, meanwhile the oil inlet of the pump of the internal booster stage of the oil pump sets up the anti-siphon valve, avoid the oil in the pump body from flowing back to the lubricating system after the engine stops, solve the oil in the pump body in the prior art will flow back to the lubricating system after the engine stops, bring the impurity backflow in the pump body into the engine, influence the operation and technical problem of the service life of the engine.

As shown in fig. 3, one end of the pump main shaft 2 extends out of the pump housing 1 and is connected with a driven gear, the rotary main shaft 3 is connected with a driving gear, and the driving gear is meshed with the driven gear; the other end of the pump main shaft 2 extends out of the pump housing 1, and a pump cover 14 for protecting the pump main shaft 2 is detachably connected to the pump housing 1. The rotation of the rotary main shaft 3 drives the rotation of the pump main shaft 2, and the booster stage pump 5 driven by the pump main shaft 2 boosts the inflow lubricating oil, and the boosting process is as follows: the booster pump 5 comprises an eccentric shell 16, an outer rotor 17 and a cycloid inner rotor 18, wherein the cycloid inner rotor 18 is fixed on a pump main shaft 2, the cycloid inner rotor 18 is meshed with the outer rotor 17, the cycloid inner rotor 18 and the outer rotor 17 are both installed in the eccentric shell 16, the pump main shaft 2 penetrates through the eccentric shell 16 and is rotationally connected with the eccentric shell 16, the part of the pump main shaft 2 in the eccentric shell 16 is fixedly connected with the cycloid inner rotor 18, and the pump main shaft 2 is driven to rotate through the rotation of a rotating main shaft 3, so that the cycloid inner rotor 18 and the outer rotor 17 in the eccentric shell 16 are driven to be meshed and rotated, and lubricating oil with a certain pressure flow is output.

As shown in fig. 2 and 3, when the integrated scavenging pump 4 includes at least two scavenging pumps, at least four ports 15 are provided on the pump main shaft 2, and a scavenging pump or booster stage pump 5 is provided between two adjacent ports 15. The preferred integrated recirculating pump 4 is formed by five recirculating pumps, with seven valve plates 15 being provided on the corresponding pump spindles 2. Each oil return pump on the integrated oil return pump 4 corresponds to an oil inlet and an oil outlet respectively. The lubricating oil is fed or discharged from the waist-shaped holes in the port plate 15. When the integrated scavenging pump 4 is formed by five scavenging pumps, seven valve plates 15 are provided on the pump spindle 2. And the pump housing 1 is provided with oil return level oil inlets 6 which are in one-to-one correspondence with the oil inlets of the oil return pump. And the oil return level filter 8 is arranged at the oil return level oil inlet 6. The oil return level filter 8 not only prevents dirt and impurities from entering the pump body, but also prevents impurities generated by the running-in of the cycloid gear from entering the oil supply system. An oil return level oil outlet 7 is arranged on the pump housing 1, and the oil return level oil outlet 7 is communicated with an oil outlet of an oil return pump. The utility model designs five oil return pump integration, correspondingly designs an oil return stage oil outlet 7 and five oil return stage oil inlets 6, wherein the five oil return stage oil inlets 6 are respectively connected with oil return pipelines, the five oil return stage oil inlets 6 can be at least connected with five oil supply subsystems, and the oil return stage oil outlet 7 is only connected with an oil tank through the pipelines. The lubricating oil pump designed by the utility model adopts an integrated design mode of five oil return pumps and a booster pump, fully utilizes the space of the lubricating oil pump, has compact structure and small volume, and meets the requirement of compact structure of aerospace components; meanwhile, the oil return efficiency is greatly improved, and the efficiency of the lubricating oil pump is further improved.

As shown in fig. 1 and 2, the pump housing 1 is provided with an oil supply stage oil inlet 9 and an oil supply stage oil outlet 10, the oil supply stage oil inlet 9 corresponds to the oil inlet of the booster stage pump 5, and the oil supply stage oil outlet 10 corresponds to the oil outlet of the booster stage pump 5. An anti-siphon valve 11 is arranged at the oil inlet 9 of the oil supply stage. The anti-siphon valve 11 prevents oil in the pump body from flowing back to the lubrication system after the engine is stopped. The oil supply stage oil outlet 10 is respectively provided with an oil supply stage filter 12 and a safety valve 13. The oil supply stage filter 12 prevents dirt and impurities from entering the pump body and also prevents impurities generated by the running-in of the cycloid gear itself from entering the oil supply system. The opening pressure of the relief valve 13 may be set according to the corresponding requirements to define the maximum outlet pressure of the lubricating oil pump.

In the implementation of embodiment 1, five oil return stage oil inlets 6 are respectively connected with five oil supply subsystems, oil return stage oil outlets 7 are connected with an oil tank through pipelines, oil supply stage oil inlets 9 are connected with the oil tank through pipelines, and oil supply stage oil outlets 10 are respectively connected with five oil supply subsystems through pipelines; after the rotating main shaft 3 drives the pump main shaft 2 to rotate, negative pressure is generated in the oil return pump, lubricating oil in the five oil supply subsystems is filtered by the oil return level filter 8 and then is sucked into the oil return pump, and the lubricating oil passes through the oil outlet 7 of the oil return level and reaches an oil tank; meanwhile, the booster stage pump 5 sucks lubricating oil from the oil tank, after the lubricating oil enters the booster stage pump 5, the cycloid inner rotor 18 and the outer rotor 17 are meshed and rotated, lubricating oil with certain pressure flow is output, when the lubricating oil with certain pressure flow is discharged from the oil supply stage oil outlet 10, when the oil pressure reaches certain pressure, the spring of the safety valve 13 is compressed, the valve core moves to be separated from the shell, the outlet of the booster stage pump 5 is opened, the oil flows into the five oil supply sub-systems through the oil supply stage filter 12 at the outlet, the oil pressure in the booster stage pump 5 is reduced, the spring is reset, and the outlet of the booster stage pump 5 is closed, so that circulation is realized.

In embodiment 2, based on embodiment 1, the safety valve 13 is a plug-in type safety valve. Two cartridge type safety valves are integrated on the pump housing 1, and are connected in series on the pump housing 1, so that the two safety valves can effectively avoid unstable working of the safety valves, and the failure condition of one safety valve is caused.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. The utility model provides a multistage lubricating oil pump of integration is strained to pump valve, includes pump housing (1), its characterized in that, be equipped with pump main shaft (2) in pump housing (1), pump housing (1) inside is equipped with the rotor subassembly of integrated time oil pump (4) and the rotor subassembly of booster stage pump (5) in proper order along pump main shaft (2), integrated time oil pump (4) include two at least time oil pumps, the oil inlet department of booster stage pump (5) is equipped with anti-siphon valve (11), and the oil-out department of booster stage pump (5) is equipped with relief valve (13), and integrated time oil pump (4) and the oil-out department of booster stage pump (5) all are equipped with the filter.

2. The pump, valve and filter integrated multistage lubricating oil pump according to claim 1, wherein one end of the pump main shaft (2) extends out of the pump housing (1) and is connected with a driven gear, the rotary main shaft (3) is connected with a driving gear, and the driving gear is meshed with the driven gear; the other end of the pump main shaft (2) extends out of the pump housing (1), and a pump cover (14) for protecting the pump main shaft (2) is detachably connected to the pump housing (1).

3. Pump valve filter integrated multistage lubricating oil pump according to claim 2, characterized in that when the integrated scavenge pump (4) comprises at least two scavenge pumps, at least four port plates (15) are arranged on the pump main shaft (2), and scavenge pumps or booster stage pumps (5) are arranged between two adjacent port plates (15); each oil return pump on the integrated oil return pump (4) corresponds to an oil inlet and an oil outlet respectively.

4. A pump valve filter integrated multistage lubricating oil pump according to claim 3, characterized in that the rotor assembly of the integrated scavenge pump (4) and the rotor assembly of the booster stage pump (5) each comprise an eccentric housing (16), an outer rotor (17) and a gerotor inner rotor (18), the gerotor inner rotor (18) being fixedly connected with the pump spindle (2), the gerotor inner rotor (18) being in engagement with the outer rotor (17), both the gerotor inner rotor (18) and the outer rotor (17) being mounted in the eccentric housing (16).

5. The pump, valve and filter integrated multi-stage lubricating oil pump according to claim 4, wherein the pump housing (1) is provided with oil return stage oil inlets (6) which are in one-to-one correspondence with the oil inlets of the oil return pump.

6. The pump, valve and filter integrated multi-stage lubricating oil pump according to claim 5, wherein the filter comprises an oil return stage filter (8) and an oil supply stage filter (12), and the oil return stage filters (8) are arranged at the oil return stage oil inlets (6).

7. The pump, valve and filter integrated multistage lubricating oil pump according to claim 6, wherein an oil return stage oil outlet (7) is arranged on the pump housing (1), and the oil return stage oil outlets (7) are communicated with an oil outlet of the oil return pump.

8. The pump, valve and filter integrated multistage lubricating oil pump according to any one of claims 1 to 7, wherein an oil supply stage oil inlet (9) and an oil supply stage oil outlet (10) are arranged on the pump housing (1), the oil supply stage oil inlet (9) corresponds to an oil inlet of the booster stage pump (5), and the oil supply stage oil outlet (10) corresponds to an oil outlet of the booster stage pump (5).

9. Pump valve filter integrated multistage lubricating oil pump according to claim 8, characterized in that the anti-siphon valve (11) is located at the oil supply stage oil inlet (9); the oil supply level oil outlet (10) is respectively provided with the oil supply level filter (12) and the safety valve (13).

10. Pump valve filter integrated multistage lubricating oil pump according to claim 9, characterized in that the safety valve (13) is a cartridge type safety valve.