CN220890488U - Double-stage high-pressure gear hydraulic pump - Google Patents
Double-stage high-pressure gear hydraulic pump Download PDFInfo
- Publication number
- CN220890488U CN220890488U CN202322551389.6U CN202322551389U CN220890488U CN 220890488 U CN220890488 U CN 220890488U CN 202322551389 U CN202322551389 U CN 202322551389U CN 220890488 U CN220890488 U CN 220890488U
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- pump body
- gear shaft
- shaft
- driving gear
- splayed
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- 238000007789 sealing Methods 0.000 claims abstract description 45
- 239000007788 liquid Substances 0.000 claims description 7
- 230000009977 dual effect Effects 0.000 claims 4
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model discloses a two-stage high-pressure gear hydraulic pump which comprises a first pump body, a connecting frame, a second pump body, a front cover plate, a rear cover plate, a sealing ring, a first pump body driving gear shaft, a first pump body driven gear shaft, a second pump body driving gear shaft, a second pump body driven gear shaft, a spline shaft, a first splayed sleeve, a second splayed sleeve, a sliding bearing, a rotary seal, a hole retainer ring, a first floating sealing ring and a second floating sealing ring. The utility model is connected with the secondary gear shaft through the spline shaft, pumps high-pressure oil through the secondary supercharging pump, is suitable for high-pressure environment, improves working efficiency, uses the splayed sleeve to fix the gear shafts, forms an oil film between the gear shafts, reduces friction, and simultaneously performs radial compensation through the floating sealing ring, so that the whole noise is reduced, and the utility model is suitable for higher rotating speed.
Description
Technical Field
The utility model relates to the technical field of gear pumps, in particular to a two-stage high-pressure gear hydraulic pump.
Background
Gear pumps are rotary pumps that rely on the change and movement of working volume created between a pump cylinder and an intermeshing gear to deliver or pressurize a liquid. When the gears rotate, the volume of the space at the disengaging side of the gears is changed from small to large to form vacuum, liquid is sucked in, the volume of the space at the engaging side of the gears is changed from large to small, and the liquid is extruded into the pipeline; the suction chamber is separated from the discharge chamber by the meshing line of the two gears, the pressure at the discharge outlet of the gear pump being entirely dependent on the amount of resistance at the pump outlet. The working pressure of the existing gear pump is relatively fixed, the existing gear pump cannot be suitable for a high-pressure environment, and the conventional gear pump is used for replacing the existing gear pump, so that the working efficiency is low, and the use is inconvenient.
Disclosure of utility model
The present utility model is directed to a dual-stage high-pressure gear hydraulic pump to solve the above-mentioned problems.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the device comprises a first pump body, a connecting frame, a second pump body, a front cover plate, a rear cover plate, a sealing ring, a first pump body driving gear shaft, a first pump body driven gear shaft, a second pump body driving gear shaft, a second pump body driven gear shaft, a spline shaft, a first splayed sleeve, a second splayed sleeve, a sliding bearing, a rotary seal, a hole retainer ring, a first floating sealing ring and a second floating sealing ring; the first pump body and the second pump body have the same structure, a pair of first splayed sleeves and a pair of second splayed sleeves are respectively assembled in the first pump body and the second pump body, and the first pump body and the second pump body are respectively installed at the left end and the right end of the connecting frame and are sealed by assembling sealing rings; the front cover plate is arranged on the left side of the first pump body and is matched with the sealing ring for sealing; the rear cover plate is arranged on the right side of the second pump body and is matched with the sealing ring for sealing; the driving gear shaft of the first pump body is arranged at the upper side of the interior of the first pump body, the left shaft section of the driving gear shaft passes through the first splayed sleeve and the front cover plate, and the right shaft section of the driving gear shaft of the first pump body passes through the second splayed sleeve and stretches into the connecting frame; the driving gear shaft of the second pump body is arranged at the lower side of the inner part of the first pump body, the shaft sections at the left side and the right side of the driving gear shaft of the second pump body are positioned in the first splayed sleeve and the second splayed sleeve, and the gear sections of the driving gear shaft of the second pump body are meshed with the gear sections of the driving gear shaft of the first pump body; the driving gear shaft of the second pump body is arranged at the upper side of the interior of the second pump body, the left shaft section of the driving gear shaft of the second pump body penetrates through the first splayed sleeve and stretches into the connecting frame, and the right shaft section of the driving gear shaft of the second pump body is positioned in the second splayed sleeve; the driven gear shaft of the second pump body is arranged at the lower side in the second pump body, the shaft sections at the left side and the right side of the driven gear shaft of the second pump body are positioned in the first splayed sleeve and the second splayed sleeve, and the gear section of the driven gear shaft of the second pump body is meshed with the gear section of the driving gear shaft of the second pump body; a group of first floating sealing rings and second floating sealing rings are assembled between the second splayed sleeve in the first pump body and the connecting frame and between the second splayed sleeve in the second pump body and the rear cover plate for sealing; the left shaft section of the first pump body driving gear shaft is provided with a sliding bearing, the sliding bearing is positioned in the front cover plate, and the left end of the sliding bearing is provided with a group of rotary seals and hole check rings for sealing.
As a preferable technical scheme of the utility model, the outer surfaces of the right shaft section of the driven gear shaft of the first pump body and the left shaft section of the driving gear shaft of the second pump body are provided with protrusions matched with the spline shaft.
As a preferable technical scheme of the utility model, the gear sections of the first pump body driving gear shaft, the first pump body driven gear shaft, the second pump body driving gear shaft and the second pump body driven gear shaft are helical teeth.
As a preferable technical scheme of the utility model, the first splayed sleeve and the second splayed sleeve are symmetrically slotted and are symmetrically arranged left and right.
As a preferable technical scheme of the utility model, the rear side of the first pump body is provided with a liquid inlet; the rear side of the connecting frame is provided with a pressure relief opening; and a liquid outlet is formed in the front side of the second pump body.
Compared with the prior art, the utility model has the beneficial effects that: the utility model is connected with the secondary gear shaft through the spline shaft, pumps high-pressure oil out through the secondary supercharging pump, is suitable for high-pressure environments, and improves the working efficiency.
Drawings
FIG. 1 is a cross-sectional view of the present utility model
FIG. 2 is a front view of the present utility model;
FIG. 3 is a rear view of the present utility model;
FIG. 4 is a schematic diagram of a sealing structure of the splayed sleeve of the present utility model;
FIG. 5 is a schematic view of a first pump body drive gear shaft seal of the present utility model;
In the figure: the first pump body 1, the connecting frame 2, the second pump body 3, the front cover plate 4, the rear cover plate 5, the sealing ring 6, the first pump body driving gear shaft 7, the first pump body driven gear shaft 8, the second pump body driving gear shaft 9, the second pump body driven gear shaft 10, the spline shaft 11, the first splayed sleeve 12, the second splayed sleeve 13, the sliding bearing 14, the rotary seal 15, the hole retainer ring 16, the first floating sealing ring 17 and the second floating sealing ring 18
Detailed Description
Example 1
As shown in fig. 1 to 5, the utility model discloses a two-stage high-pressure gear hydraulic pump, which comprises a first pump body 1, a connecting frame 2, a second pump body 3, a front cover plate 4, a rear cover plate 5, a sealing ring 6, a first pump body driving gear shaft 7, a first pump body driven gear shaft 8, a second pump body driving gear shaft 9, a second pump body driven gear shaft 10, a spline shaft 11, a first splayed sleeve 12, a second splayed sleeve 13, a sliding bearing 14, a rotary seal 15, a hole retainer ring 16, a first floating sealing ring 17 and a second floating sealing ring 18; the first pump body 1 and the second pump body 3 have the same structure, a pair of first splayed sleeves 12 and second splayed sleeves 13 are respectively assembled in the first pump body 1 and the second pump body 3, and the first pump body 1 and the second pump body 3 are respectively installed at the left end and the right end of the connecting frame 2 and are assembled with sealing rings 6 for sealing; the front cover plate 4 is arranged on the left side of the first pump body 1 and is sealed by a sealing ring 6; the rear cover plate 5 is arranged on the right side of the second pump body 3 and is matched with the sealing ring 6 for sealing; the first pump body driving gear shaft 7 is arranged on the upper side in the first pump body 1, the left shaft section passes through the first splayed sleeve 12 and the front cover plate 4, and the right shaft section passes through the second splayed sleeve 13 and stretches into the connecting frame 2; the second pump body driving gear shaft 9 is arranged at the lower side of the inner part of the first pump body 1, the shaft sections at the left side and the right side of the second pump body driving gear shaft 9 are positioned in the first splayed sleeve 12 and the second splayed sleeve 13, and the gear sections of the second pump body driving gear shaft are meshed with the gear sections of the first pump body driving gear shaft 7; the second pump body driving gear shaft 9 is arranged at the upper side in the second pump body 3, the left shaft section of the second pump body driving gear shaft passes through the first splayed sleeve 12 and stretches into the connecting frame 2, and the right shaft section of the second pump body driving gear shaft is positioned in the second splayed sleeve 13; the second pump body driven gear shaft 10 is arranged at the lower side of the inner part of the second pump body 3, the shaft sections at the left side and the right side of the second pump body driven gear shaft are positioned in the first splayed sleeve 12 and the second splayed sleeve 13, and the gear sections of the second pump body driven gear shaft are meshed with the gear sections of the second pump body driving gear shaft 9; a group of first floating sealing rings 17 and second floating sealing rings 18 are respectively assembled between the second splayed sleeve 13 in the first pump body 1 and the connecting frame 2 and between the second splayed sleeve 13 in the second pump body 3 and the rear cover plate 5 for sealing; the left shaft section of the first pump body driving gear shaft 7 is provided with a sliding bearing 14, the sliding bearing 14 is positioned in the front cover plate 4, and the left end of the sliding bearing 14 is provided with a group of rotary seals 15 and hole check rings 16 for sealing. The whole pump body is divided into two parts, low-pressure oil enters from the inlet at the rear side of the first pump body 1, is fed into the second pump body 3 from the internal oil way after being added once, is further pressurized, and is discharged from the outlet at the front side for other equipment after the high-pressure oil is obtained.
The working principle of the utility model is as follows: when the hydraulic pump works, the pressure relief opening at the rear side of the connecting frame 2 is sealed, then low-pressure oil is fed into the hydraulic pump from the rear side of the first pump body 1, the external power source drives the first pump body driving gear shaft 7 to rotate, the spline shaft 11 drives the second pump body driving gear shaft 9 to rotate, oil enters the first pump body 1 and is subjected to first pressurization through the meshing rotation of the first pump body driving gear shaft 7 and the first pump body driven gear shaft 8, the pressurized oil is fed into the connecting frame 2 and is fed into the second pump body 3 from an oil way in the connecting frame 2, the second pump body driving gear shaft 9 and the second pump body driven gear shaft 10 are subjected to second pressurization, and the pressurized high-pressure oil is fed out from an outlet at the front side after the pressurization.
The spline shaft is connected with the secondary gear shaft, and high-pressure oil is pumped out through the secondary supercharging pump, so that the spline shaft is suitable for a high-pressure environment, and the working efficiency is improved; the splayed sleeve is used for fixing two groups of gear shafts, an oil film is formed between the rotating shafts, the situations of transmission abrasion and eccentricity are reduced, the dynamic pressure floating state of the rotating shafts is realized, the overall noise is reduced, and the device can adapt to higher rotating speeds; meanwhile, a floating sealing ring is arranged on the splayed sleeve for radial compensation.
Although the specific embodiments of the present utility model have been described in detail, the present utility model is not limited to the above embodiments, and various changes and modifications without inventive labor may be made within the scope of the present utility model without departing from the spirit of the present utility model, which is within the scope of the present utility model.
Claims (5)
1. A two-stage high-pressure gear hydraulic pump, characterized in that: the novel hydraulic pump comprises a first pump body (1), a connecting frame (2), a second pump body (3), a front cover plate (4), a rear cover plate (5), a sealing ring (6), a first pump body driving gear shaft (7), a first pump body driven gear shaft (8), a second pump body driving gear shaft (9), a second pump body driven gear shaft (10), a spline shaft (11), a first splayed sleeve (12), a second splayed sleeve (13), a sliding bearing (14), a rotary seal (15), a hole retainer ring (16), a first floating sealing ring (17) and a second floating sealing ring (18); the structure of the first pump body (1) is the same as that of the second pump body (3), a pair of first splayed sleeves (12) and a pair of second splayed sleeves (13) are respectively assembled in the first pump body (1) and the second pump body (3) and are respectively installed at the left end and the right end of the connecting frame (2) and are sealed by assembling sealing rings (6); the front cover plate (4) is arranged on the left side of the first pump body (1) and is matched with the sealing ring (6) for sealing; the rear cover plate (5) is arranged on the right side of the second pump body (3) and is matched with the sealing ring (6) for sealing; the first pump body driving gear shaft (7) is arranged at the upper side in the first pump body (1), the left shaft section of the first pump body driving gear shaft passes through the first splayed sleeve (12) and the front cover plate (4), and the right shaft section of the first pump body driving gear shaft passes through the second splayed sleeve (13) and stretches into the connecting frame (2); the second pump body driving gear shaft (9) is arranged at the lower side in the first pump body (1), the shaft sections at the left side and the right side of the second pump body driving gear shaft are positioned in the first splayed sleeve (12) and the second splayed sleeve (13), and the gear sections of the second pump body driving gear shaft are meshed with the gear sections of the first pump body driving gear shaft (7); the second pump body driving gear shaft (9) is arranged at the upper side in the second pump body (3), the left shaft section of the second pump body driving gear shaft penetrates through the first splayed sleeve (12) and stretches into the connecting frame (2), and the right shaft section of the second pump body driving gear shaft is positioned in the second splayed sleeve (13); the driven gear shaft (10) of the second pump body is arranged at the lower side in the second pump body (3), the shaft sections at the left side and the right side of the driven gear shaft are positioned in the first splayed sleeve (12) and the second splayed sleeve (13), and the gear section of the driven gear shaft is meshed with the gear section of the driving gear shaft (9) of the second pump body; a group of first floating sealing rings (17) and second floating sealing rings (18) are respectively assembled between the second splayed sleeve (13) in the first pump body (1) and the connecting frame (2) and between the second splayed sleeve (13) in the second pump body (3) and the rear cover plate (5) for sealing; the left shaft section of the first pump body driving gear shaft (7) is provided with a sliding bearing (14), the sliding bearing (14) is positioned in the front cover plate (4), and the left end of the sliding bearing is provided with a group of rotary seals (15) and hole check rings (16) for sealing.
2. The dual stage high pressure gear hydraulic pump of claim 1, wherein: the outer surfaces of the right shaft section of the first pump body driven gear shaft (8) and the left shaft section of the second pump body driving gear shaft (9) are provided with bulges matched with the spline shaft (11).
3. The dual stage high pressure gear hydraulic pump of claim 1, wherein: the gear sections of the first pump body driving gear shaft (7), the first pump body driven gear shaft (8), the second pump body driving gear shaft (9) and the second pump body driven gear shaft (10) are spiral teeth.
4. The dual stage high pressure gear hydraulic pump of claim 1, wherein: the first splayed sleeve (12) and the second splayed sleeve (13) are symmetrically grooved and are symmetrically installed left and right.
5. The dual stage high pressure gear hydraulic pump of claim 1, wherein: the rear side of the first pump body (1) is provided with a liquid inlet; the rear side of the connecting frame (2) is provided with a pressure relief opening; the front side of the second pump body (3) is provided with a liquid outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322551389.6U CN220890488U (en) | 2023-09-20 | 2023-09-20 | Double-stage high-pressure gear hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322551389.6U CN220890488U (en) | 2023-09-20 | 2023-09-20 | Double-stage high-pressure gear hydraulic pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220890488U true CN220890488U (en) | 2024-05-03 |
Family
ID=90874665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322551389.6U Active CN220890488U (en) | 2023-09-20 | 2023-09-20 | Double-stage high-pressure gear hydraulic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220890488U (en) |
-
2023
- 2023-09-20 CN CN202322551389.6U patent/CN220890488U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |