CN113606132A - Double-output gear pump - Google Patents

Double-output gear pump Download PDF

Info

Publication number
CN113606132A
CN113606132A CN202110964310.5A CN202110964310A CN113606132A CN 113606132 A CN113606132 A CN 113606132A CN 202110964310 A CN202110964310 A CN 202110964310A CN 113606132 A CN113606132 A CN 113606132A
Authority
CN
China
Prior art keywords
pump
gear
driven gear
liquid
liquid outlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202110964310.5A
Other languages
Chinese (zh)
Inventor
侯森
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Pafuer Fluid Technology Co ltd
Original Assignee
Suzhou Pafuer Fluid Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Suzhou Pafuer Fluid Technology Co ltd filed Critical Suzhou Pafuer Fluid Technology Co ltd
Priority to CN202110964310.5A priority Critical patent/CN113606132A/en
Publication of CN113606132A publication Critical patent/CN113606132A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/06—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/084—Toothed wheels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/086—Carter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/20—Rotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/30—Casings or housings

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

The invention discloses a double-output gear pump, which comprises a pump shell with a pump cavity, wherein a driving gear, a driven gear I and a driven gear II are arranged in the pump cavity, wherein the first driven gear and the second driven gear are both meshed with the driving gear, the axes of the first driven gear and the second driven gear are in the same plane, and the axis of the driven gear I and the axis of the driven gear II are symmetrically arranged around the axis of the driving gear, the pump shell is provided with a liquid inlet, a liquid outlet I and a liquid outlet II, a liquid inlet flow channel is also arranged in the pump shell, a first liquid suction area and a first liquid outlet area are formed by the driving gear and the driven gear, the driving gear and the driven gear form a second liquid suction area and a second liquid outlet area, and the first liquid outlet area and the second liquid outlet area have different liquid outlet flow rates. The gear pump can output different flow rates to adapt to different working conditions, and the application range of the gear pump is expanded.

Description

Double-output gear pump
Technical Field
The invention relates to the technical field of gear pumps, in particular to a double-output gear pump.
Background
Gear pumps are also known as positive displacement devices, i.e. like pistons in a cylinder, where liquid is mechanically displaced when one tooth enters the fluid space of another tooth. Because the liquid is incompressible, the liquid and the teeth cannot occupy the same space at the same time, and the continuous meshing of the gears causes the gear pump to continuously output the liquid.
The gear pump among the prior art is by two gear engagement output liquid, a gear in two gears is the driving gear, another gear is driven gear, consequently, two gear engagement's gear pump atress is inhomogeneous, for this reason, a three gear engagement's gear pump has appeared among the prior art, set up driven gear respectively in the both sides of driving gear, this scheme makes the gear pump atress even, the life of gear pump has been prolonged, but this scheme need arrange the pipeline in the gear pump outside, make the gear pump structure very complicated.
The gear pump with three gears in the prior art can not output different flow when outputting, has poor industrial adaptability and can not meet the use requirements of different working conditions, and the gear pump with three gears in the prior art has complex structure, difficult maintenance and high use cost.
Disclosure of Invention
The invention provides a double-output gear pump, which solves the technical problems that the gear pump in the prior art cannot output liquid with different flow rates and is complex in structure.
Some embodiments adopted to solve the above technical problems include:
a double-output gear pump comprises a pump shell with a pump cavity, wherein a driving gear, a first driven gear and a second driven gear are arranged in the pump cavity, the first driven gear and the second driven gear are meshed with the driving gear, the axes of the first driven gear and the second driven gear are on the same plane, the axis of the first driven gear and the axis of the second driven gear are symmetrically arranged relative to the axis of the driving gear, the pump shell is provided with a liquid inlet, a first liquid outlet and a second liquid outlet, a liquid inlet flow channel is further arranged in the pump shell, the driving gear and the first driven gear form a first liquid suction area and a first liquid outlet area, the driving gear and the second driven gear form a second liquid suction area and a second liquid outlet area, the first liquid outlet area and the second liquid outlet area have different liquid outlet flow rates, and the liquid inlet supplies liquid into the first liquid suction area and the second liquid outlet area through the liquid inlet flow channel respectively, And the second liquid suction area is communicated with the first liquid outlet and the second liquid outlet.
In the practical application process, the driving gear drives the first driven gear and the second driven gear to rotate simultaneously, the first driven gear and the second driven gear are meshed with the driving gear to respectively form a first liquid outlet area, a second liquid outlet area, a first liquid suction area and a second liquid suction area, the liquid inlet is communicated with the first liquid suction area and the second liquid suction area through the liquid inlet flow channel, the structure of the gear pump is effectively simplified through the liquid inlet flow channel, the use cost of the gear pump is reduced, and the gear pump is easy to maintain.
In addition, the first liquid outlet area and the second liquid outlet area have different liquid outlet flows, so that the first liquid outlet and the second liquid outlet have different liquid outlet flows, the gear pump can output different flows to adapt to different working conditions, and the application range of the gear pump is expanded.
Preferably, the thickness of the first driven gear is larger than that of the second driven gear, and the dual-output gear pump further comprises a compensation block, wherein the compensation block maintains the sealing performance of the second liquid suction area and the second liquid outlet area.
The driven gear I and the driven gear II with different thicknesses are meshed with the driving gear to achieve output of different flow rates, the structure of the gear pump is simplified, and the manufacturing cost of the gear pump is reduced.
Preferably, the compensating block has a clearance with the driving gear. The abrasion of the driving gear is slowed down, and the service life of the driving gear is prolonged.
Preferably, the thickness of the first driven gear is equal to that of the driving gear. The driving gear is stressed evenly, and the stability of the gear pump in the working process is improved.
Preferably, the pump casing includes a base, a middle plate, and an upper cover, wherein the pump chamber is located on the middle plate, the pump chamber penetrates through the middle plate, the base and the upper cover are respectively disposed on both sides of the middle plate, and the base and the middle plate seal the pump chamber. The pump case is easy to process and assemble, and the gear pump is easy to maintain.
Preferably, the compensation block is disposed on the upper cover, and the compensation block and the upper cover are of an integral structure. The compensation block can be infinitely close to the driving gear, so that the compensation capacity of the compensation block is optimized, the compensation block cannot interfere with the driving gear, and the performance of the gear pump is optimized.
Preferably, the inlet channel comprises a groove recessed into the intermediate plate, the intermediate plate being fitted to the base to close a portion of the groove such that the groove forms the inlet channel. The liquid inlet flow channel has a simple structure, and the base is easy to process.
Preferably, the liquid inlet is arranged on the upper cover, and the intermediate plate is provided with a liquid inlet hole communicated with the liquid inlet and the liquid inlet flow channel. The gear pump does not need an external pipeline, and the structure of the gear pump is simplified.
Preferably, a first sealing ring is arranged between the upper cover and the middle plate, and a second sealing ring is arranged between the base and the middle plate. The sealing performance of the pump cavity is optimized, and the performance of the gear pump is further optimized.
Preferably, the compensating block is rotatably provided in the pump housing, and the compensating block is in contact with the driving gear. The compensation capacity of the compensation block is optimized, the compensation block and the driving gear are in rolling friction, the abrasion of the driving gear and the compensation block is reduced, and the service lives of the driving gear and the compensation block are prolonged.
Compared with the prior art, the double-output gear pump provided by the invention has the following advantages:
1. the first liquid outlet and the second liquid outlet output different flow rates, and the application range of the gear pump is widened.
2. The arrangement of the liquid inlet flow channel enables the gear pump to be free of an external pipeline, the structure of the gear pump is simplified, and the gear pump is easy to maintain.
3. The driven gear I and the driven gear II with different thicknesses are meshed with the driving gear, so that different flow outputs of the liquid outlet I and the liquid outlet II are realized, the structure of the gear pump is simplified, and the use cost of the gear pump is reduced.
Drawings
For purposes of explanation, several embodiments of the presently disclosed technology are set forth in the following drawings. The following drawings are incorporated herein and constitute a part of the detailed description. In some instances, well-known structures and components are shown in block diagram form in order to avoid obscuring the concepts of the presently disclosed subject matter.
FIG. 1 is a schematic view of the present invention in a first direction.
FIG. 2 is a schematic view of the present invention in a second direction.
Fig. 3 is an exploded view of the present invention in a first orientation.
Fig. 4 is an exploded view of the present invention in a second orientation.
FIG. 5 is a schematic view of the driving gear, the first driven gear and the second driven gear in a first direction within the pump chamber.
FIG. 6 is a schematic diagram of the driving gear, the first driven gear and the second driven gear in a second direction in the pump chamber.
Fig. 7 is a schematic view of the upper cover.
FIG. 8 is a front view of the drive gear, the first driven gear, and the second driven gear in the pump chamber.
Fig. 9 is a cross-sectional view taken along line a-a of fig. 8.
Fig. 10 is a schematic diagram of the position of the second driven gear when the first outlet and the second outlet output different flow rates.
Fig. 11 is a schematic diagram of the position of the second driven gear when the first outlet and the second outlet output the same flow.
In the figure:
1. pump case, 11, pump chamber, 12, inlet, 13, outlet I, 14, outlet II, 15, inlet flow channel, 16, compensation block, 17, first sealing washer, 18, second sealing washer.
101. A base 102, a middle plate 103 and an upper cover.
21. A driving gear 22, a driven gear I, a driven gear 23 and a driven gear II.
3. Motor rotor 301, motor cover 302, screw 303, gear shaft 304, axle sleeve.
401. The device comprises a slideway 402, an elastic piece 403, an end face bearing 404, a yielding groove 405 and an adjusting handle.
Detailed Description
The specific embodiments illustrated below are intended as descriptions of various configurations of the presently disclosed subject matter technology and are not intended to represent the only configurations in which the presently disclosed subject matter technology may be practiced. Specific embodiments include specific details for the purpose of providing a thorough understanding of the presently disclosed subject matter technology. It will be apparent, however, to one skilled in the art that the presently disclosed subject matter technology is not limited to the specific details shown herein and may be practiced without these specific details.
Referring to fig. 1 to 9, a dual output gear pump includes a pump housing 1 having a pump chamber 11, a driving gear 21, a driven gear 22 and a driven gear 23 are disposed in the pump chamber 11, wherein the driven gear 22 and the driven gear 23 are both engaged with the driving gear 21, axes of the driven gear 22 and the driven gear 23 are in the same plane, an axis of the driven gear 22 and an axis of the driven gear 23 are symmetrically arranged with respect to an axis of the driving gear 21, the pump housing 1 has a liquid inlet 12, a liquid outlet 13 and a liquid outlet 14, a liquid inlet flow channel 15 is further disposed in the pump housing 1, the driving gear 21 and the driven gear 22 form a first liquid suction area and a first liquid outlet area, the driving gear 21 and the driven gear 23 form a second liquid suction area and a second liquid outlet area, the first liquid outlet area and the second liquid outlet area have different liquid outlet flow rates, the liquid inlet 12 supplies liquid to the first liquid absorbing area and the second liquid absorbing area through the liquid inlet flow passage 15 respectively, the first liquid outlet area is communicated with the first liquid outlet 13, and the second liquid outlet area is communicated with the second liquid outlet 14.
The driving gear 21, the first driven gear 22 and the second driven gear 23 all rotate in the pump cavity 11, in the rotating process, liquid in the first liquid suction area and the second liquid suction area is conveyed to the first liquid outlet area and the second gear area, the driving gear 21 continuously rotates, and continuous output of liquid in the first liquid outlet 13 and the second liquid outlet 14 is achieved.
Because the first driven gear 22 and the second driven gear 23 are both meshed with the driving gear 21, the first liquid suction area and the second liquid suction area are not located on the same side of the driving gear 21, and therefore the first liquid suction area and the second liquid suction area are communicated by arranging the liquid inlet flow channel 15, so that liquid entering the liquid inlet 12 can respectively enter the first liquid suction area and the second liquid suction area, and liquid supply is achieved. According to the scheme, a pipeline does not need to be arranged outside the pump shell 1, the structure of the gear pump is simplified, and the gear pump is easy to maintain.
The first liquid outlet area and the second liquid outlet area have different flow output, so that the first liquid outlet 13 and the second liquid outlet 14 have different liquid output, and the application range of the gear pump is widened.
The scheme for realizing different flow output of the first liquid outlet area and the second liquid inlet area can be that the first driven gear 22 and the second driven gear 23 have different liquid conveying volumes. Liquid transfer refers to the transfer of liquid from the intake area to the discharge area.
In some embodiments, the thickness of the first driven gear 22 is greater than the thickness of the second driven gear 23, and the dual-output gear pump further comprises a compensation block 16, wherein the compensation block 16 maintains the tightness of the second liquid suction area and the second liquid outlet area.
The compensation block 16 and the driving gear 21 have a gap therebetween. The compensation block 16 is mainly used for compensating the sealing performance and realizing the normal operation of the gear pump.
In actual operation, because the thicknesses of the first driven gear 22 and the second driven gear 23 are different, the liquid conveying volume of the first driven gear 22 is different from that of the second driven gear 23. Under the same or different rotating speeds, the volume of the liquid transferred to the first liquid outlet area by the driven gear I22 is different from the volume of the liquid transferred to the second liquid outlet area by the driven gear II 23, and therefore different flow output is achieved after the liquid outlet I13 and the liquid outlet.
Referring to fig. 3 to 9, in some embodiments, the thickness of the first driven gear 22 is equal to that of the driving gear 21.
The pump casing 1 includes a base 101, a middle plate 102, and an upper cover 103, wherein the pump chamber 11 is located on the middle plate 102, the pump chamber 11 penetrates the middle plate 102, the base 101 and the upper cover 103 are respectively disposed on both sides of the middle plate 102, and the base 101 and the middle plate 102 seal the pump chamber 11.
The thicknesses of the driving gear 21 and the driven gear 22 are the same, the structure of the base 101 or the upper cover 103 is simplified, and a compensation structure is not required to be arranged on the base 101 or the upper cover 103, wherein the compensation structure is required for compensating the thickness difference between the driving gear 21 and the driven gear 22.
In practice, the driving gear 21, the first driven gear 22 and the second driven gear 23 may be mounted to the pump housing 1 through the gear shaft 303. A bushing 304 may be provided between the pump housing 1 and the gear shaft 303. The base 101 may be provided with a shaft hole, and the upper cover 103 may be provided with a shaft hole. A part of the gear shaft 303 is fitted into the shaft hole of the upper cover 103 through the shaft hole.
The base 101, the intermediate plate 102, and the upper cover 103 may be assembled together by screws 302. The base 101 may be provided with screw holes, the middle plate 102 and the upper cover 103 may be provided with through holes for engaging with the screws 302, and the screws 302 sequentially pass through the upper cover 103 and the through holes of the middle plate 102 to engage with the screw holes provided on the base 101, thereby completing the assembly.
A first sealing ring 17 is disposed between the upper cover 103 and the middle plate 102, and a second sealing ring 18 is disposed between the base 101 and the middle plate 102. The first and second seals 17 and 18 surround the pump chamber 11 and the liquid inlet flow passage 15, respectively. The first sealing ring 17 and the second sealing ring 18 should generate certain elastic deformation when the sealing performance is realized, so as to optimize the sealing effect.
The driving gear 21, the first driven gear 22 and the second driven gear 23 are all positioned in the pump cavity 11. The drive gear 21 may be driven by a motor rotor 3 mounted on the base 101. A motor cover 301 may also be mounted on the base 101 to function as a protection for the motor rotor 3. The motor cover 301 may be mounted on the base 101 by screws 302.
In some embodiments, the compensation block 16 is disposed on the upper cover 103, and the compensation block 16 and the upper cover 103 are a single-piece structure.
The compensating block 16 is disposed on the upper cover 103, and in actual operation, the volume of the compensating block 16 can be made as large as possible, that is, the compensating block 16 can approach the driving gear 21 infinitely as long as it does not contact the driving gear 21.
Similarly, the compensation block 16 may be disposed on the base 101, or the compensation block 16 may be disposed on the middle plate 102. The arrangement of the compensating block 16 in the intermediate block is such that the second driven gear 23 can be assembled from only one direction of the intermediate plate 102.
The specific configuration position of the compensation block 16 is not limited, and can be designed reasonably according to needs.
The second driven gear 23 should not be disposed on the second compensation block 16, and the second driven gear 23 needs to be meshed with the driving gear 21, so that when the second compensation block 16 is disposed on the second driven gear 23, the volume of the second compensation block 16 is limited, and the compensation capability cannot be effectively realized.
In some embodiments, the inlet channel 15 comprises a groove recessed into the intermediate plate 102, the intermediate plate 102 being fitted to the base 101 to close a portion of the groove such that the groove forms the inlet channel 15.
The liquid inlet 12 is disposed on the upper cover 103, and the intermediate plate 102 is provided with a liquid inlet hole communicating the liquid inlet 12 and the liquid inlet flow channel 15.
The arrangement of the loading inlet 12 on the upper cover 103 is a practical way only and is not limiting. The specific configuration of the liquid inlet 12 can be designed reasonably as required.
In some embodiments, the compensating block 16 is rotatably disposed in the pump housing 1, and the compensating block 16 is in contact with the driving gear 21. This embodiment cannot be implemented in parallel with the above-described embodiment in which the gap is formed between the compensation block 16 and the drive gear 21.
Since the compensating block 16 is in contact with the driving gear 21, the compensating block 16 has a better compensation capability. The compensating block 16 may be rotatably connected to the pump housing 1 via a shaft body, and specifically, the compensating block 16 may be mounted to the base 101 or the upper cover 103. A rolling bearing or a sliding bearing can be arranged between the compensation block 16 and the shaft body. So that the compensation rotation is flexible, and the abrasion of the compensation block 16 or the abrasion of the driving gear 21 is reduced. The shaft body may be of an integral structure with the base 101 or the upper cover 103.
In some embodiments, the first driven gear 22 includes a lower bottom surface and the second driven gear 23 includes an upper top surface, wherein the lower bottom surface of the first driven gear 22 is flush with the upper top surface of the second driven gear 23, or wherein a gap is provided between the lower bottom surface of the first driven gear 22 and the upper top surface of the second driven gear 23.
At this time, the meshing positions of the driving gear 21, the first driven gear 22 and the second driven gear 23 are staggered, so that the driving gear 21 can be effectively prevented from being worn too fast.
Because the driving gear 21 is meshed with the first driven gear 22 and the second driven gear 23 simultaneously, if the meshing positions of the first driven gear 22 and the second driven gear 23 and the driving gear 21 are not staggered in the long-term use process, the meshing position of the driving gear 21 is abraded by the first driven gear 22 and the second driven gear 23 simultaneously. Therefore, this embodiment can slow down the abrasion of the driving gear 21.
The first driven gear 22 and the second driven gear 23 are offset from each other, and compensation can be performed in the form of a compensation block 16 in order to maintain the vacuum characteristic of the pump chamber 11. The specific arrangement of the compensation block 16 is as described above with reference to the above embodiments.
Referring to fig. 10 to 11, in some embodiments, in order to meet different working condition requirements, the first outlet 13 and the second outlet 14 may need the same flow output, and for this reason, the second driven gear 23 is required to realize variable flow output.
Specifically, the method can be realized by the following scheme:
the compensation block 16 is slidably disposed on the upper cover 103, wherein a slide 401 for accommodating the compensation block 16 is disposed on the upper cover 103, and an elastic member 402 for pushing the compensation block 16 to protrude from the upper cover 103 is disposed between the compensation block 16 and a bottom wall of the slide 401. The elastic member 402 may be a spring. One end of the elastic member 402 is fixed to the bottom wall of the slide 401, and the other end of the elastic member 402 is fixed to the compensation block 16.
An end face bearing 403 is arranged at one end of the compensation block 16, which is in contact with the second driven gear 23, and the end face bearing 403 is fixed on the compensation block 16 to reduce the abrasion of the compensation block 16 and the second driven gear 23.
In this embodiment, the thickness of the first driven gear 22 is greater than that of the second driven gear 23, which means that when the first liquid outlet 13 and the second liquid outlet 14 have different flow outputs, the thickness of the meshing position of the first driven gear 22 and the driving gear 21 is greater than that of the meshing position of the second driven gear 23 and the driving gear 21.
In this embodiment, the entities of the first driven gear 22 and the second driven gear 23 may have the same thickness.
The base 101 is provided with a yielding groove 404 for accommodating the second driven gear 23, a part of the second driven gear 23 is located in the yielding groove 404, wherein the base 101 is further provided with an adjusting handle 405 for adjusting the position of the second driven gear 23 relative to the yielding groove 404. The adjustment handle 405 may be cylindrical to avoid interference of the adjustment handle 405 with the gear shaft 303. The adjusting handle 405 can be fixed on the base 101 by a screw after being adjusted in place.
The adjusting handle 405 pushes the second driven gear 23 to displace along the axis of the second driven gear 23. When the adjusting handle 405 pushes the second driven gear 23 to displace towards the upper cover 103, the second driven gear 23 abuts against the end face bearing 403, and overcomes the elastic force of the elastic element 402 through the compensation block 16 to move towards the upper cover 103, at this time, the liquid conveying volume of the second driven gear 23 gradually increases, that is, the meshing thickness of the second driven gear 23 and the driving gear 21 is gradually thickened until the second driven gear 23 and the first driven gear 22 have the same flow output.
When the adjusting handle 405 moves away from the upper cover 103, the elastic member 402 pushes the second driven gear 23 to move away from the upper cover 103 through the compensation block 16 and the end and the bearing, and at this time, the liquid transfer volume of the second driven gear 23 gradually decreases, that is, the meshing thickness of the second driven gear 23 and the driving gear 21 gradually becomes thinner, so that the first liquid outlet 13 and the second liquid outlet 14 have different flow outputs.
In the scheme, the liquid outlet flow of the second liquid outlet 14 can be adjusted, so that the application range of the gear pump is further widened.
While the subject matter disclosed herein has been described in detail with reference to specific embodiments thereof, it will be understood that the foregoing description is only illustrative of some embodiments of the subject matter disclosed herein, and that certain details may be omitted.
In addition, in some of the embodiments disclosed above, there is a possibility that a plurality of embodiments may be combined and implemented, and various combinations are not listed at length. The implementation embodiments can be freely combined according to the requirements when the technical personnel in the field carry out the implementation so as to obtain better application experience.
While practicing the disclosed subject matter, one skilled in the art will be able to derive other configurations and figures of detail from the disclosed subject matter and figures of drawings, it being apparent that such detail remains within the scope of what is encompassed by the disclosed subject matter without departing from the disclosed subject matter.

Claims (10)

1. A double-output gear pump comprises a pump shell with a pump cavity, wherein a driving gear, a first driven gear and a second driven gear are arranged in the pump cavity, the first driven gear and the second driven gear are meshed with the driving gear, the axes of the first driven gear and the second driven gear are on the same plane, and the axis of the first driven gear and the axis of the second driven gear are symmetrically arranged relative to the axis of the driving gear, and the double-output gear pump is characterized in that: the pump case has inlet, liquid outlet one and liquid outlet two still be provided with the feed liquor runner in the pump case, the driving gear with driven gear one forms first imbibition district and first play liquid district, the driving gear with driven gear two forms second imbibition district and second play liquid district, first play liquid district with second play liquid district has different liquid flow, the inlet passes through the feed liquor runner is supplied liquid respectively first imbibition district, second imbibition district, first play liquid district with liquid outlet one communicates with each other, second play liquid district with liquid outlet two communicates with each other.
2. The dual output gear pump of claim 1, wherein: the thickness of the first driven gear is larger than that of the second driven gear, and the double-output gear pump further comprises a compensation block, wherein the compensation block keeps the sealing performance of the second liquid suction area and the second liquid outlet area.
3. The dual output gear pump of claim 2, wherein: a gap is formed between the compensation block and the driving gear.
4. The dual output gear pump of claim 3, wherein: the thickness of the first driven gear is equal to that of the driving gear.
5. The dual output gear pump of claim 4, wherein: the pump casing includes a base, a middle plate, and an upper cover, wherein the pump chamber is located in the middle plate, and the pump chamber penetrates the middle plate, the base and the upper cover are respectively disposed on both sides of the middle plate, and the base and the middle plate seal the pump chamber.
6. The dual output gear pump of claim 5, wherein: the compensation block is configured on the upper cover, and the compensation block and the upper cover are of an integrated structure.
7. The dual output gear pump of claim 5, wherein: the inlet channel comprises a groove recessed into the intermediate plate, the intermediate plate being fitted to the base to close a portion of the groove so that the groove forms the inlet channel.
8. The dual output gear pump of claim 7, wherein: the liquid inlet set up in the upper cover, the intermediate lamella is provided with the intercommunication the liquid inlet and the feed liquor hole of feed liquor runner.
9. The dual output gear pump of claim 5, wherein: a first sealing ring is arranged between the upper cover and the middle plate, and a second sealing ring is arranged between the base and the middle plate.
10. The dual output gear pump of claim 2, wherein: the compensation block is rotatably arranged on the pump shell and is in contact with the driving gear.
CN202110964310.5A 2021-08-22 2021-08-22 Double-output gear pump Pending CN113606132A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110964310.5A CN113606132A (en) 2021-08-22 2021-08-22 Double-output gear pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110964310.5A CN113606132A (en) 2021-08-22 2021-08-22 Double-output gear pump

Publications (1)

Publication Number Publication Date
CN113606132A true CN113606132A (en) 2021-11-05

Family

ID=78309103

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110964310.5A Pending CN113606132A (en) 2021-08-22 2021-08-22 Double-output gear pump

Country Status (1)

Country Link
CN (1) CN113606132A (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005016307A (en) * 2003-06-23 2005-01-20 Toyota Motor Corp Variable displacement gear pump
US20090208358A1 (en) * 2008-02-15 2009-08-20 Kabushiki Kaisha Toyota Jidoshokki Variable displacement gear pump
CN201714657U (en) * 2010-07-02 2011-01-19 辽宁光大机械制造有限公司 High pressure gear pump for floating compensation of radical clearance
CN201908831U (en) * 2011-01-05 2011-07-27 山东交通学院海运学院 Gear pump with three gears
CN104712554A (en) * 2015-04-01 2015-06-17 山东大学 Mini-type pump based on Logix gears
US20150167667A1 (en) * 2013-12-18 2015-06-18 Yamada Manufacturing Co., Ltd. Oil pump device
CN205559265U (en) * 2016-02-18 2016-09-07 陈洪亮 Double cavities displacement pump
US20160369795A1 (en) * 2014-02-28 2016-12-22 Purdue Research Foundation Variable delivery external gear machine
KR101738483B1 (en) * 2016-03-04 2017-05-23 명화공업주식회사 Gear pump

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005016307A (en) * 2003-06-23 2005-01-20 Toyota Motor Corp Variable displacement gear pump
US20090208358A1 (en) * 2008-02-15 2009-08-20 Kabushiki Kaisha Toyota Jidoshokki Variable displacement gear pump
CN201714657U (en) * 2010-07-02 2011-01-19 辽宁光大机械制造有限公司 High pressure gear pump for floating compensation of radical clearance
CN201908831U (en) * 2011-01-05 2011-07-27 山东交通学院海运学院 Gear pump with three gears
US20150167667A1 (en) * 2013-12-18 2015-06-18 Yamada Manufacturing Co., Ltd. Oil pump device
US20160369795A1 (en) * 2014-02-28 2016-12-22 Purdue Research Foundation Variable delivery external gear machine
CN104712554A (en) * 2015-04-01 2015-06-17 山东大学 Mini-type pump based on Logix gears
CN205559265U (en) * 2016-02-18 2016-09-07 陈洪亮 Double cavities displacement pump
KR101738483B1 (en) * 2016-03-04 2017-05-23 명화공업주식회사 Gear pump

Similar Documents

Publication Publication Date Title
CA2070477C (en) Gear pump for oil for an internal-combustion engine, in particular for motor vehicles
CN101446286B (en) Modular internal gear pump or motor
US9309885B2 (en) Gear ring pump including housing containing port support therein with the port support formed of a material having a greater heat expansion coefficient than a material of the housing
KR100552597B1 (en) Volumetric rotary pump
US2477797A (en) Gear pump with wear compensating means
US9752572B2 (en) Variable flow hydraulic machine
CN113606132A (en) Double-output gear pump
EP3228868B1 (en) Low-backpressure rotary compressor
US2458678A (en) Unidirectional flow gear pump
CN209705688U (en) A kind of rotor-type oil pump directly driven by engine crankshaft
US20150132167A1 (en) Rotary pump or motor with orbital piston aspiration, methods of production and uses thereof
US3015282A (en) Pump
CA2966535A1 (en) Rotary fluid pressure device with drive-in-drive valve arrangement
CN210196008U (en) Water lubrication screw compressor
CN210949105U (en) Transfer pump, gear box, vehicle and ship
CN201661461U (en) Inner gearing oil pump for constant-direction oil supply
US5252047A (en) Gear pump with controlled clamping force
CN109737052B (en) Gear pump
JPH10122160A (en) Gear pump
CN220749118U (en) Valve device
CN216812131U (en) Gear oil pump
CN215633578U (en) Miniature duplex plunger pump body
CN219242195U (en) Double-driving arc gear shaft high-pressure oil pump
CN214837095U (en) Split structure gear oil pump
CN212616302U (en) Double-end-face mechanical seal for push-type double-screw pump

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination