CN113404691B

CN113404691B - Hydraulic oil pump with multi-directional valves

Info

Publication number: CN113404691B
Application number: CN202110803375.1A
Authority: CN
Inventors: 万帧祥; 张建刚; 谢永; 张立杰
Original assignee: Hefei Jiyuan Huiyi Hydraulic Technology Co ltd
Current assignee: Hefei Jiyuan Huiyi Hydraulic Technology Co ltd
Priority date: 2021-07-16
Filing date: 2021-07-16
Publication date: 2022-06-28
Anticipated expiration: 2041-07-16
Also published as: CN113404691A

Abstract

The invention relates to the field of hydraulic oil pumps, and discloses a hydraulic oil pump with a multidirectional valve, which can judge the magnitude of reaction force in a corresponding oil outlet passage by detecting the pressure condition in the corresponding oil outlet end in real time through a plurality of pressure sensors, namely reflecting the magnitude of hydraulic oil supply demand in each passage, if the demands of a plurality of oil outlet passages are different, a controller compares the reaction force according to the feedback information of the plurality of pressure sensors and controls each flow rate valve to open different angles, so that redundant hydraulic oil in the oil outlet end with small oil supply demand is conveyed to the oil outlet end with large demand through a distribution pipe and the corresponding flow rate valve, thereby solving the problem of serious radial unbalanced force when the demand of a single oil supply passage is small, also realizing intelligent adjustment of the oil supply of each oil outlet end according to the comparison of the demand of each passage under the condition of certain gear rotation speed, the running stability of the multi-gear pump is ensured.

Description

Hydraulic oil pump with multi-directional valves

Technical Field

The invention relates to the field of hydraulic oil pumps, in particular to a hydraulic oil pump with a multi-directional valve.

Background

The multiple gear pump is a gear pump which drives two or more than two gears to work independently by the same transmission shaft, and the pumps are usually arranged in a shell. Compact structure, small size, convenient overall arrangement of the main machine and wide application in construction engineering machinery.

When the existing multi-gear hydraulic oil pump is used for conveying hydraulic oil, the phenomenon of unbalanced supply and demand can occur, on one hand, when the demand is small, the hydraulic oil pump continuously supplies oil, the reaction force of impact load directly acts on the middle part of the gear of the oil pump to form huge radial impact force on the gear, the radial impact force acts on the middle part of the gear to drive the gear to bend, and the service life of the gear pump is seriously influenced, in the Chinese patent document with the publication number of CN102213216B, the proposal is to improve the pressure application range of the reaction force by changing the shape of the oil outlet end, but the phenomenon of large reaction force can not be effectively solved, and the internally meshed gear set still can be subjected to larger axial unbalanced force, on the other hand, the multi-gear pump is applied to a large-scale hydraulic device, at the moment, the hydraulic oil demand at the oil outlet end of the oil pump is larger, and the traditional multi-gear pump easily causes the phenomenon of insufficient supply of single-channel hydraulic oil because a plurality of channels are connected in parallel, therefore, the application range of the multiple gear pump is reduced, and the hydraulic oil pump with the multi-way valve is disclosed to meet the use requirement of the hydraulic oil pump.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the hydraulic oil pump with the multi-directional valve, which has the advantages of high stability and the like and solves the series problems that the rotating shaft of the traditional gear pump is subjected to radial unbalanced force and the like.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a hydraulic oil pump with a multidirectional valve comprises a pump shell, wherein the pump shell comprises a pump body and a sealing cover plate which are matched, a driving shaft is sleeved on a rotary drum on the sealing cover plate, one end of the driving shaft penetrates through the sealing cover plate and extends to the inner wall of the pump body, a driven shaft matched with the driving shaft is rotatably installed in the pump body, gears which are meshed with each other are installed on the driving shaft and the driven shaft, a sealing element is filled in the pump body, the pump body is also communicated with a plurality of oil inlet ends and oil outlet ends which are matched with each other, a plurality of oil outlet ends are communicated with a pressure relief assembly, the pressure relief assembly can reduce the reaction force in the oil outlet ends, an oil way control assembly is further arranged on the shell and used for controlling whether oil is discharged from the corresponding oil outlet ends or not, and a communicating assembly is arranged on the oil way control assembly, the communicating component is used for realizing series oil supply of a plurality of oil inlet ends.

Preferably, the pressure relief assembly comprises a distribution pipe and a flow rate valve, the distribution pipe is arranged on one side of the pump body and communicated with the oil outlet ends through branch pipes, the flow rate valve is arranged on each of the branch pipes and can control the flow rate of hydraulic oil corresponding to the branch pipes;

the pressure relief assembly further comprises a pressure relief pipe and a pressure relief valve, the distribution pipe is communicated with the pressure relief pipe, the pressure relief pipe is provided with a pressure detector, and the pressure relief pipe is further provided with the pressure relief valve matched with the pressure relief pipe.

Preferably, the pressure release subassembly still includes the intelligent subassembly, the intelligent subassembly contains controller and pressure sensor, and is a plurality of equal fixed mounting has on the inner wall of oil outlet end pressure sensor, it is a plurality of pressure sensor is used for real-time detection to correspond the pressure size in the oil outlet end, just fixed mounting has with a plurality ofly on the sealed apron pressure sensor reaches the equal electric connection of velocity of flow valve the controller.

Preferably, the oil path control assembly comprises an oil inlet valve and an air inlet valve, the plurality of oil inlet ends are provided with the oil inlet valves matched with the corresponding oil inlet ends, the plurality of oil inlet ends are communicated with air inlet pipelines, the plurality of air inlet pipelines are provided with the air inlet valves matched with the corresponding air inlet pipelines, and one ends of the plurality of air inlet pipelines are located between the corresponding oil inlet valves and the inner wall of the pump body.

Preferably, the communicating component includes a communicating pipeline and a communicating valve, the communicating pipeline is communicated between two adjacent oil inlets, and the communicating pipeline is provided with a plurality of communicating valves adapted to the communicating pipeline, the communicating valve is used to control whether the corresponding channel in the communicating pipeline is opened, and the communicating pipeline is located between one end of the oil inlets and the plurality of oil inlets.

(III) advantageous effects

Compared with the prior art, the invention provides a hydraulic oil pump with a multi-way valve, which has the following beneficial effects:

1. the hydraulic oil pump with the multi-directional valve detects the pressure condition in the corresponding oil outlet end in real time through a plurality of pressure sensors, the reaction force in the corresponding oil outlet passage can be judged, namely the magnitude of the hydraulic oil supply demand in each passage is reflected, if the demands of a plurality of oil outlet passages are different, the controller compares the feedback information of a plurality of pressure sensors and controls each flow rate valve to open at different angles, thereby delivering the redundant hydraulic oil in the oil outlet end with small oil supply demand to the oil outlet end with large demand through the distribution pipe and the corresponding flow rate valve, thereby not only solving the problem of serious radial unbalanced force when the demand of a single oil supply passage is small, but also realizing that under the condition of certain gear rotating speed, the adaptation fuel feeding of each oil outlet end is realized intelligently according to the contrast of each access demand, and the running stability of the multi-gear pump is ensured.

2. This hydraulic oil pump with multidirectional valve, through pressure detector real-time detection pressure size in pressure release pipeline and the distributor pipe and with pressure information transmission to the controller in carry out the analysis, accessible controller control pressure release valve opens certain angle and carries out the pressure release processing to the distributor pipe when necessary, prevents under the equal less condition of a plurality of passageways fuel feeding demands, continuously inputs and leads to the fact the damage to the distributor pipe, has further improved the security of multiple gear pump.

3. When the hydraulic oil pump with the multi-way valve needs to supply oil to a hydraulic device with a long stroke by utilizing the multi-gear pump, the hydraulic requirement of long endurance cannot be met through a single passage on the multiple gear pump, at the moment, the oil inlet valves and the flow rate valves on the other passages are closed, and the air inlet valves and a plurality of communicating valves communicated with the rest of the passages are opened, on one hand, the rest of the passages are communicated with the outside atmosphere, under the continuous rotation of the driving shaft and the driven shaft, the pump body is not damaged by the larger negative pressure phenomenon, on the other hand, the hydraulic oil in the rest oil inlet ends is conveyed to a certain passage with large hydraulic demand through a plurality of communicating pipelines, therefore, the hydraulic oil supply on a single passage is prevented from being insufficient, the hydraulic device cannot be driven, the application range of the traditional multi-gear hydraulic oil pump is expanded, and the practicability of the gear oil pump is improved.

4. This hydraulic oil pump with multidirectional valve, when meetting certain oil supply passageway and need stronger hydraulic thrust in the short time, at this moment, only rely on certain end of producing oil to carry out the fuel feeding and can appear the not enough phenomenon of hydraulic pressure, close a plurality of intercommunication valves and a plurality of air inlet valve, close all the other a plurality of end of producing oil and correspond the intercommunication between the passageway of producing oil simultaneously, and open a plurality of velocity of flow valves, then carry to the single fuel supply passageway that the pressure demand is big on through distributing pipe and bleeder, realize the same hydraulic means fuel feeding drive of outside in a plurality of fuel supply passageways short time, the pressure fuel feeding of the multiple gear pump has been improved, the practicality of the multiple gear pump has further been improved.

Drawings

FIG. 1 is a perspective view of a first embodiment of the present invention;

FIG. 2 is a perspective view of a second embodiment of the present invention;

FIG. 3 is a partially cut-away perspective view of a first perspective of the present invention;

FIG. 4 is a perspective view of the present invention with a second perspective view partially cut away;

FIG. 5 is a schematic view of the internal perspective structure of the present invention;

fig. 6 is a schematic perspective view of the housing of the present invention.

In the figure: 1. a pump body; 2. sealing the cover plate; 3. a drive shaft; 4. a seal member; 5. a driven shaft; 6. a gear; 7. an oil inlet end; 8. an oil outlet end; 9. a distribution pipe; 10. a flow rate valve; 11. an oil inlet valve; 12. an air intake line; 13. an intake valve; 14. a communicating pipeline; 15. a communicating valve; 16. a controller; 17. a pressure sensor; 18. a pressure relief pipe; 19. a pressure detector; 20. a pressure relief valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

In order to solve the above technical problems, the present application proposes a hydraulic oil pump with a multi-directional valve

In a typical embodiment of the present application, as shown in fig. 1-6, a hydraulic oil pump with multi-directional valves includes a pump housing, the pump housing includes a pump body 1 and a sealing cover plate 2, the sealing cover plate 2 is sleeved with a driving shaft 3, one end of the driving shaft 3 penetrates the sealing cover plate 2 and extends to the inner wall of the pump body 1, a driven shaft 5 adapted to the driving shaft 3 is rotatably installed in the pump body 1, the driving shaft 3 and the driven shaft 5 are both installed with a gear 6 engaged with each other, the pump body 1 is filled with a sealing member 4, the pump body 1 is further communicated with a plurality of oil inlet ends 7 and oil outlet ends 8 adapted to each other, the plurality of oil outlet ends 8 are communicated with a pressure relief assembly, the pressure relief assembly can reduce the reaction force in the oil outlet end 8, the housing is further provided with an oil path control assembly, the oil path control assembly is used for controlling whether oil is discharged from the corresponding oil outlet end 8, and the oil circuit control assembly is provided with a communicating assembly which is used for realizing serial oil supply of a plurality of oil inlet ends 7.

Further, in the above scheme, the pressure relief assembly includes a distribution pipe 9 and a flow rate valve 10, the distribution pipe 9 is disposed on one side of the pump body 1, the distribution pipe 9 is communicated with the plurality of oil outlet ends 8 through branch pipes, the plurality of branch pipes are all provided with the flow rate valve 10, the flow rate valve 10 can control the flow rate of hydraulic oil in the corresponding branch pipe, by arranging the pressure relief assembly, a large reaction force is applied to the oil outlet ends 8, that is, when the rotating shaft is subjected to a large radial unbalance force, the flow rate valve 10 in the corresponding channel can be opened to a certain angle according to the magnitude of the reaction force applied to each oil outlet end 8 after being analyzed by the controller 16, and part of the hydraulic oil in the oil outlet end 8 subjected to the large reaction force is guided to other output channels, so as to realize intelligent pressure relief and replenishment;

the pressure relief assembly further comprises a pressure relief pipe 18 and a pressure relief valve 20, the distribution pipe 9 is communicated with the pressure relief pipe 18, the pressure relief pipe 18 is provided with a pressure detector 19, the pressure relief pipe 18 is further provided with the pressure relief valve 20 matched with the pressure relief pipe 18, the pressure detector 19 is arranged to detect the pressure in the distribution pipe 9 in real time, and the pressure relief valve 20 can be opened when necessary to realize pressure relief and protect each passage.

Further, in above-mentioned scheme, the pressure release subassembly still includes the intelligent subassembly, the intelligent subassembly contains controller 16 and pressure sensor 17, equal fixed mounting has pressure sensor 17 on a plurality of inner walls of producing oil end 8, a plurality of pressure sensor 17 are used for the real-time detection to correspond the pressure size in producing oil end 8, and fixed mounting has controller 16 with a plurality of pressure sensor 17 and the equal electric connection of velocity of flow valve 10 on the sealed apron 2, through setting up pressure sensor 17, transmit the pressure value that corresponds in the end 8 of producing oil to controller 16 in real time and carry out the analysis and compare.

Further, in the above scheme, the oil circuit control assembly includes oil inlet valve 11 and air intake valve 13, all be equipped with on a plurality of oil feed ends 7 with the oil inlet valve 11 that corresponds oil feed end 7 looks adaptation, and all the intercommunication has air intake pipeline 12 on a plurality of oil feed ends 7, all be equipped with the air intake valve 13 with the air intake pipeline 12 looks adaptation that corresponds on a plurality of air intake pipelines 12, and the one end of a plurality of air intake pipelines 12 all is located between the inner wall of the oil feed valve 11 that corresponds and the pump body 1, through setting up a plurality of air intake pipelines 12, when closing the oil feed valve 11 that corresponds, initiatively open the air intake valve 13 that corresponds, open air intake pipeline 12 internal passage, avoid coaxial rotation, drive a plurality of gears 6 and rotate continuously, cause great negative pressure condition in the pump body 1, then damage whole hydraulic oil pump.

Further, in the above scheme, the communicating component includes communicating pipelines 14 and communicating valves 15, the communicating pipelines 14 are communicated between two adjacent oil inlets 7, and the communicating valves 15 adapted to the corresponding communicating pipelines 14 are disposed on the plurality of communicating pipelines 14, the communicating valves 15 are used to control whether the channel in the corresponding communicating pipeline 14 is opened, and the plurality of communicating pipelines 14 are located between one end of the plurality of oil inlets 7 and the plurality of oil inlets 11, so that when a single-passage hydraulic demand is large, the corresponding oil inlets 11 are closed and the plurality of communicating valves 15 are opened by disposing the plurality of communicating pipelines 14, and then the hydraulic oil in the rest of passages is delivered to the single-passage with large demand through the communicating pipelines 14, thereby improving the application range of the multi-gear hydraulic oil pump.

The working principle is as follows: when in use, the pressure condition in the corresponding oil outlet end 8 is detected in real time through the plurality of pressure sensors 17, the magnitude of the reaction force in the corresponding oil outlet passage can be judged, that is, the magnitude of the hydraulic oil supply demand in each passage is reflected, if the demands of a plurality of oil outlet passages are different, the controller 16 compares the demands according to the feedback information of a plurality of pressure sensors 17 and controls each flow rate valve 10 to open at different angles, so that the excess hydraulic oil in the oil outlet end 8 with small oil supply demand is delivered to the oil outlet end 8 with large demand through the distribution pipe 9 and the corresponding flow rate valve 10, thereby not only solving the problem of serious radial unbalanced force when the demand of a single oil supply passage is small, but also realizing that under the condition of a certain rotating speed of the gear 6, the adaptive oil supply of each oil outlet end 8 is intelligently adjusted according to the comparison of the demand of each passage, so that the running stability of the multi-gear pump is ensured;

the pressure detector 19 is used for detecting the pressure in the pressure relief pipeline 18 and the distribution pipe 9 in real time and transmitting pressure information to the controller 16 for analysis, and the controller 16 can be used for controlling the pressure relief valve 20 to open a certain angle to perform pressure relief treatment on the distribution pipe 9 when necessary, so that the situation that the distribution pipe 9 is damaged due to continuous input under the condition that the oil supply requirements of a plurality of passages are small is prevented, and the safety of the multiple gear pump is further improved;

When a multiplex gear pump is required to supply oil to a hydraulic device with a long stroke, the hydraulic requirement of long endurance cannot be met through a single passage on the multiplex gear pump, at the moment, oil inlet valves 11 and a plurality of flow rate valves 10 on other passages are closed, and air inlet valves 13 and a plurality of communication valves 15 communicated with other passages are opened, so that on one hand, the other passages are communicated with the external atmosphere, and under the continuous rotation of a driving shaft 3 and a driven shaft 5, a larger negative pressure phenomenon cannot be generated to damage a pump body 1, and on the other hand, hydraulic oil in other oil inlet ends 7 is conveyed to a passage with a large hydraulic requirement through a plurality of communication pipelines 14, so that the hydraulic oil supply on the single passage is prevented from being insufficient, the hydraulic device cannot be driven, the use range of the traditional multiplex gear hydraulic oil pump is expanded, and the practicability of the gear oil pump is improved;

when meeting certain oil supply route and needing stronger hydraulic thrust in the short time, at this moment, only rely on a certain oil outlet end 8 to carry out the fuel feeding and probably appear the not enough phenomenon of hydraulic pressure, close a plurality of intercommunication valves 15 and a plurality of valve 13 that admits air, close all the other a plurality of intercommunication between oil outlet end 8 and the corresponding oil outlet route simultaneously, and open a plurality of velocity of flow valves 10, then carry to the single fuel feeding route that the pressure demand is big on through distributing pipe 9 and bleeder, realize the same hydraulic means fuel feeding drive of outside in a plurality of fuel feeding routes short time, the fuel feeding pressure of multiple gear pump has been improved, the practicality of multiple gear pump has further been improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a hydraulic oil pump with multidirectional valve, includes the pump case, the pump case includes the pump body (1) and the sealed apron (2) of looks adaptation, driving shaft (3) have been cup jointed on sealed apron (2), the one end of driving shaft (3) is run through sealed apron (2) and extend to on the inner wall of the pump body (1), just the pump body (1) internal rotation install with driven shaft (5) of driving shaft (3) looks adaptation, driving shaft (3) with all install engaged with gear (6) on driven shaft (5), just the packing has sealing member (4) in the pump body (1), still the intercommunication has a plurality of oil feed ends (7) and the play oil end (8) of looks adaptation on the pump body (1), its characterized in that: the oil outlet ends (8) are communicated with pressure relief assemblies which can reduce the reaction force in the oil outlet ends (8), the pump body (1) is also provided with an oil circuit control assembly which is used for controlling whether the corresponding oil outlet end (8) is internally provided with oil or not, and the oil circuit control assembly is provided with a communicating assembly which is used for realizing the serial oil supply of a plurality of oil inlet ends (7), the pressure relief assembly comprises a distribution pipe (9) and a flow rate valve (10), the distribution pipe (9) is arranged on one side of the pump body (1), the distribution pipe (9) is communicated with the oil outlet ends (8) through branch pipes, the branch pipes are provided with the flow rate valves (10), the flow rate valve (10) can control the flow rate of hydraulic oil in the corresponding branch pipe;

The pressure relief assembly further comprises a pressure relief pipe (18) and a pressure relief valve (20), the pressure relief pipe (18) is communicated with the distribution pipe (9), a pressure detector (19) is arranged on the pressure relief pipe (18), the pressure relief valve (20) matched with the pressure relief pipe (18) is further arranged on the pressure relief pipe (18), the oil circuit control assembly comprises an oil inlet valve (11) and an air inlet valve (13), the oil inlet valves (11) matched with the corresponding oil inlet ends (7) are arranged on a plurality of oil inlet ends (7), air inlet pipelines (12) are communicated with a plurality of oil inlet ends (7), the air inlet valves (13) matched with the corresponding air inlet pipelines (12) are arranged on a plurality of air inlet pipelines (12), and one end of each air inlet pipeline (12) is located between the corresponding oil inlet valve (11) and the inner wall of the pump body (1), the communicating component comprises communicating pipelines (14) and communicating valves (15), the communicating pipelines (14) are communicated between every two adjacent oil inlet ends (7), communicating valves (15) matched with the corresponding communicating pipelines (14) are arranged on the communicating pipelines (14), the communicating valves (15) are used for controlling whether corresponding channels in the communicating pipelines (14) are opened or not, and the communicating pipelines (14) are located between one ends of the oil inlet ends (7) and the oil inlet valves (11).

2. A hydraulic oil pump with multi-way valve as claimed in claim 1, characterized in that: the pressure release subassembly still includes the intelligent subassembly, the intelligent subassembly contains controller (16) and pressure sensor (17), and is a plurality of equal fixed mounting has on the inner wall of play oil end (8) pressure sensor (17), it is a plurality of pressure sensor (17) are used for real-time detection to correspond the pressure size in play oil end (8), just fixed mounting has with a plurality ofly on sealed apron (2) pressure sensor (17) reaches the equal electric connection of velocity of flow valve (10) controller (16).