CN112610472A - High-pressure gear pump with safety valve additionally arranged on rear end cover - Google Patents
High-pressure gear pump with safety valve additionally arranged on rear end cover Download PDFInfo
- Publication number
- CN112610472A CN112610472A CN202011527276.7A CN202011527276A CN112610472A CN 112610472 A CN112610472 A CN 112610472A CN 202011527276 A CN202011527276 A CN 202011527276A CN 112610472 A CN112610472 A CN 112610472A
- Authority
- CN
- China
- Prior art keywords
- end cover
- rear end
- safety valve
- pressure
- shell
- 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
Links
- 238000002955 isolation Methods 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 4
- 239000003921 oil Substances 0.000 description 39
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
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
-
- 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
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/24—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
Abstract
The invention relates to a high-pressure gear pump with a safety valve additionally arranged on a rear end cover, which comprises a shell, wherein one end of the shell is provided with a flange end cover, the other end of the shell is provided with a rear end cover, a driving gear and a driven gear which are mutually meshed are arranged in the shell, a central rotating shaft of the driving gear penetrates out of the flange end cover, the driving gear is arranged between the flange end cover and the rear end cover through driving gear shaft sleeves at two ends, the driven gear is arranged between the flange end cover and the rear end cover through driven gear shaft sleeves at two ends, an oil inlet is arranged in the middle of one side wall of the shell, an oil outlet is arranged in the middle of the other opposite side wall, a safety valve component mounting cavity is arranged inside one side wall of the rear end cover, a safety valve component, the pressure oil hole is communicated with the inner cavity of the shell at one side of the oil outlet. The invention improves the safety performance of the high-pressure gear pump and is convenient for pressure regulation.
Description
Technical Field
The invention relates to the technical field of gear pump installation operation, in particular to a high-pressure gear pump with a safety valve additionally arranged on a rear end cover.
Background
The pressure of the high-pressure gear pump is generally 35-40 kg, and parts are all made of high-wear-resistant materials. The high-pressure gear pump has the characteristics of compact structure, good self-priming property, high efficiency, strong adaptability and the like, and the service life of the pump is 2-10 times longer than that of a common gear pump in the occasions of conveying liquid containing impurities. The high-pressure gear pump is suitable for conveying medium with the temperature not higher than 200 ℃ and the viscosityNot more than 1500mm2And/s heavy oil, diesel oil, coal tar and other low-grade combustion oil containing non-metallic impurities. The fuel injection device is particularly suitable for fuel injection occasions of petroleum, chemical industry, grain and oil, building materials, daily chemical, road building, electric power and asphalt mixing station departments and industries; but also is more suitable for the occasions requiring stable working pressure and long-term continuous working,
the high-pressure gear pump has great potential safety hazard because the pressure of the delivered fluid is great.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a high-pressure gear pump with a safety valve additionally arranged on a rear end cover.
In order to achieve the purpose, the invention adopts the following technical scheme:
a high-pressure gear pump with a safety valve additionally arranged on a rear end cover comprises a shell, wherein a flange end cover is arranged at one end of the shell, the rear end cover is arranged at the other end of the shell, a driving gear and a driven gear which are meshed with each other are arranged in the shell, a central rotating shaft of the driving gear penetrates out of the flange end cover, the driving gear is arranged between the flange end cover and the rear end cover through driving gear shaft sleeves at two ends, the driven gear is arranged between the flange end cover and the rear end cover through driven gear shaft sleeves at two ends, an oil inlet is arranged in the middle of one side wall of the shell, an oil outlet is arranged in the middle of the other opposite side wall of the shell, a safety valve assembly mounting cavity is arranged inside one side wall of the rear end cover, a safety valve assembly is arranged in the safety valve assembly mounting cavity, the pressure oil hole is communicated with the inner cavity of the shell on one side of the oil outlet.
The safety valve assembly comprises a valve rod, a valve core and a spring connected between the valve rod and the valve core, the valve core is located between an oil discharge hole and a pressure oil hole, the oil discharge hole is located at the spring section, and the valve rod penetrates out of the rear end cover and is fixed through a locking nut.
The flange end cover is characterized in that a through hole for the central rotating shaft of the driving gear to penetrate out is formed in the inner side face of the flange end cover, a first groove is formed in the inner side of the through hole, one driving gear is mounted in the first groove in a shaft sleeve mode, a second groove is formed in the inner side face of the flange end cover corresponding to the driven gear, and one driven gear is mounted in the second groove in a shaft sleeve mode.
And a first annular groove is formed in the peripheries of the through hole, the first groove and the second groove on the inner side surface of the flange end cover, and a first O-shaped ring is installed in the first annular groove.
And a second annular groove is formed in the inner side surface of the rear end cover and on the peripheries of the oil discharge hole and the pressure oil hole, and a second O-shaped ring is installed in the second annular groove.
An isolation groove is arranged between the oil discharge hole and the pressure oil hole on the inner side surface of the rear end cover, and an isolation O-shaped ring is installed in the isolation groove.
The shell, the flange end cover and the rear end cover are correspondingly provided with a plurality of mounting holes and fixedly connected through connecting bolts in the mounting holes.
The invention has the beneficial effects that: the safety valve assembly is arranged on the rear end cover, the lower end of the valve core is communicated with one side of the oil outlet, if the pressure exceeds the force of the spring, the valve core is lifted, high-pressure oil enters the low-pressure cavity of the safety valve assembly mounting cavity through the oil discharge hole, so that the effect of stabilizing the pressure of the oil outlet is achieved, the compression force of the spring is adjusted by adjusting the valve rod, so that the opening pressure of the safety valve assembly is set, the valve rod is fixed by the locking nut after being adjusted, the valve rod is prevented from moving, the safety valve assembly is mounted on the rear end cover, the structure is compact.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is an enlarged view of B in FIG. 2;
FIG. 4 is a perspective view of the present invention;
FIG. 5 is a perspective view of the present invention in one orientation with the housing omitted;
FIG. 6 is a perspective view of the present invention in another orientation with the housing omitted;
FIG. 7 is a schematic structural view of the housing;
FIG. 8 is a schematic structural view of a flange end cap;
FIG. 9 is a schematic structural view of the rear end cap;
in the figure: 1-a shell; 2-flange end cover; 3-rear end cap; 4-a drive gear; 5-a driven gear; 6-central rotating shaft; 7-driving gear shaft sleeve; 8-driven gear shaft sleeve; 9-an oil inlet; 10-an oil outlet; 11-safety valve assembly installation cavity; 12-oil drain hole; 13-pressure oil hole; 14-a valve stem; 15-a valve core; 16-a spring; 17-a lock nut; 18-a via hole; 19-a first groove; 20-a second groove; 21-a first annular groove; 22-a first O-ring; 23-a second annular groove; 24-a second O-ring; 25-an isolation trench; 26-mounting holes; 27-connecting bolts;
the following detailed description will be made in conjunction with embodiments of the present invention with reference to the accompanying drawings.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in fig. 1 to 9, a high-pressure gear pump with a safety valve mounted on a rear end cover comprises a housing 1, a flange end cover 2 is mounted at one end of the housing 1, and a rear end cover 3 is mounted at the other end of the housing 1, a driving gear 4 and a driven gear 5 which are engaged with each other are arranged in the housing 1, a central rotating shaft 6 of the driving gear 4 penetrates out of the flange end cover 2, the driving gear 4 is mounted between the flange end cover 2 and the rear end cover 3 through driving gear shaft sleeves 7 at two ends, the driven gear 5 is mounted between the flange end cover 2 and the rear end cover 3 through driven gear shaft sleeves 8 at two ends, an oil inlet 9 is arranged in the middle of one side wall of the housing 1, an oil outlet 10 is arranged in the middle of the other opposite side wall, a safety valve assembly mounting cavity 11 is arranged inside one side wall of the rear end cover 3, a safety valve assembly is mounted in, And the pressure oil hole 13, the oil discharge hole 12 is communicated with the inner cavity of the shell 1 on one side of the oil inlet 9, and the pressure oil hole 13 is communicated with the inner cavity of the shell 1 on one side of the oil outlet 10.
The safety valve assembly comprises a valve rod 14, a valve core 15 and a spring 16 connected between the valve rod 14 and the valve core 15, the valve core 15 is located between an oil discharge hole 12 and a pressure oil hole 13, the oil discharge hole 12 is located at the section of the spring 16, and the valve rod 14 penetrates out of the rear end cover 3 and is fixed through a locking nut 17.
The inner side surface of the flange end cover 2 is provided with a through hole 18 through which the central rotating shaft 6 of the driving gear 4 penetrates out, the inner side of the through hole 18 is provided with a first groove 19, one driving gear shaft sleeve 7 is arranged in the first groove 19, the inner side surface of the flange end cover 2 is provided with a second groove 20 corresponding to the driven gear 5, and one driven gear shaft sleeve 7 is arranged in the second groove 20.
And a first annular groove 21 is formed in the peripheries of the through hole 18, the first groove 19 and the second groove 20 on the inner side surface of the flange end cover 2, and a first O-shaped ring 22 is installed in the first annular groove 21.
And a second annular groove 23 is formed in the inner side surface of the rear end cover 3 and on the peripheries of the oil discharge hole 12 and the pressure oil hole 13, and a second O-shaped ring 24 is installed in the second annular groove 23.
An isolation groove 25 is formed in the inner side face of the rear end cover 3 between the oil discharge hole 12 and the pressure oil hole 13, and an isolation O-shaped ring is installed in the isolation groove 25.
The shell 1, the flange end cover 2 and the rear end cover 3 are correspondingly provided with a plurality of mounting holes 26 and fixedly connected through connecting bolts 27 in the mounting holes 26.
The invention is provided with the safety valve component on the back end cover 3, the lower end of the valve core 15 is communicated with one side of the oil outlet 10, if the pressure exceeds the force of the spring 16, the valve core 15 is lifted, the high-pressure oil enters the low-pressure cavity of the safety valve component mounting cavity 11 through the oil discharge hole 12, thereby achieving the effect of stabilizing the pressure of the oil outlet 10, the compression force of the spring 16 is adjusted by the adjusting valve rod 14, so as to set the opening pressure of the safety valve component, the valve rod 14 is fixed by the locking nut 17 after being adjusted, the valve rod 14 is prevented from moving, the safety valve component is mounted on the back end cover 3, the structure.
The invention has been described in connection with the accompanying drawings, it is to be understood that the invention is not limited to the specific embodiments disclosed, but is intended to cover various modifications, adaptations or uses of the invention, and all such modifications and variations are within the scope of the invention.
Claims (7)
1. A high-pressure gear pump with a safety valve additionally arranged on a rear end cover is characterized by comprising a shell (1), wherein a flange end cover (2) is installed at one end of the shell (1), a rear end cover (3) is installed at the other end of the shell, a driving gear (4) and a driven gear (5) which are meshed with each other are arranged in the shell (1), a central rotating shaft (6) of the driving gear (4) penetrates out of the flange end cover (2), the driving gear (4) is installed between the flange end cover (2) and the rear end cover (3) through driving gear shaft sleeves (7) at two ends, the driven gear (5) is installed between the flange end cover (2) and the rear end cover (3) through driven gear shaft sleeves (8) at two ends, an oil inlet (9) is arranged in the middle of one side wall of the shell (1), an oil outlet (10) is arranged in the middle of the other opposite side wall, a safety valve, the oil-gas separator is characterized in that a safety valve assembly is installed in the safety valve assembly installation cavity (11), an oil discharge hole (12) and a pressure oil hole (13) which are communicated with the safety valve assembly installation cavity (11) are formed in the inner side face of the rear end cover (3), the oil discharge hole (12) is communicated with an inner cavity of the shell (1) on one side of the oil inlet (9), and the pressure oil hole (13) is communicated with an inner cavity of the shell (1) on one side of the oil outlet (10).
2. The high-pressure gear pump with the safety valve additionally arranged on the rear end cover is characterized in that the safety valve assembly comprises a valve rod (14), a valve core (15) and a spring (16) connected between the valve rod (14) and the valve core (15), the valve core (15) is located between an oil discharge hole (12) and a pressure oil hole (13), the oil discharge hole (12) is located at the section of the spring (16), and the valve rod (14) penetrates out of the rear end cover (3) and is fixed through a locking nut (17).
3. The high-pressure gear pump with the safety valve mounted on the rear end cover is characterized in that a through hole (18) for the central rotating shaft (6) of the driving gear (4) to penetrate through is formed in the inner side face of the flange end cover (2), a first groove (19) is formed in the inner side of the through hole (18), one driving gear shaft sleeve (7) is mounted in the first groove (19), a second groove (20) is formed in the inner side face of the flange end cover (2) corresponding to the driven gear (5), and one driven gear shaft sleeve (7) is mounted in the second groove (20).
4. The high-pressure gear pump with the safety valve mounted on the rear end cover is characterized in that a first annular groove (21) is formed in the inner side face of the flange end cover (2) on the peripheries of the through hole (18), the first groove (19) and the second groove (20), and a first O-shaped ring (22) is mounted in the first annular groove (21).
5. The high-pressure gear pump with the safety valve mounted on the rear end cover is characterized in that a second annular groove (23) is formed in the periphery of the oil discharge hole (12) and the pressure oil hole (13) on the inner side face of the rear end cover (3), and a second O-shaped ring (24) is installed in the second annular groove (23).
6. The high-pressure gear pump with the safety valve mounted on the rear end cover is characterized in that an isolation groove (25) is formed between the oil discharge hole (12) and the pressure oil hole (13) on the inner side face of the rear end cover (3), and an isolation O-shaped ring is mounted in the isolation groove (25).
7. The high-pressure gear pump with the safety valve additionally arranged on the rear end cover is characterized in that a plurality of mounting holes (26) are correspondingly formed in the shell (1), the flange end cover (2) and the rear end cover (3) and are fixedly connected through connecting bolts (27) in the mounting holes (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011527276.7A CN112610472A (en) | 2020-12-22 | 2020-12-22 | High-pressure gear pump with safety valve additionally arranged on rear end cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011527276.7A CN112610472A (en) | 2020-12-22 | 2020-12-22 | High-pressure gear pump with safety valve additionally arranged on rear end cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112610472A true CN112610472A (en) | 2021-04-06 |
Family
ID=75244001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011527276.7A Pending CN112610472A (en) | 2020-12-22 | 2020-12-22 | High-pressure gear pump with safety valve additionally arranged on rear end cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112610472A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201763599U (en) * | 2010-04-27 | 2011-03-16 | 泊姆克(天津)液压有限公司 | High-pressure gear pump |
| CN203348074U (en) * | 2013-06-21 | 2013-12-18 | 上海大众液压技术有限公司 | Double gear pump unit |
| CN203717332U (en) * | 2014-01-24 | 2014-07-16 | 上海大众液压技术有限公司 | Valve control type flow stabilizing and splitting gear pump |
| CN203796556U (en) * | 2014-01-28 | 2014-08-27 | 江苏云飞机械有限公司 | Diesel oil gear pump capable with improved safety performance |
| CN204572443U (en) * | 2015-04-30 | 2015-08-19 | 合肥长源液压股份有限公司 | Gear oil pump |
| CN205026353U (en) * | 2015-09-07 | 2016-02-10 | 潍柴动力股份有限公司 | Oil pump |
| CN207178197U (en) * | 2017-08-14 | 2018-04-03 | 金迈思液压设备（天津）有限公司 | High-pressure gear pump |
| CN211549974U (en) * | 2020-01-14 | 2020-09-22 | 浙江工业大学 | High-pressure-resistant high-temperature gear oil pump |
-
2020
- 2020-12-22 CN CN202011527276.7A patent/CN112610472A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201763599U (en) * | 2010-04-27 | 2011-03-16 | 泊姆克(天津)液压有限公司 | High-pressure gear pump |
| CN203348074U (en) * | 2013-06-21 | 2013-12-18 | 上海大众液压技术有限公司 | Double gear pump unit |
| CN203717332U (en) * | 2014-01-24 | 2014-07-16 | 上海大众液压技术有限公司 | Valve control type flow stabilizing and splitting gear pump |
| CN203796556U (en) * | 2014-01-28 | 2014-08-27 | 江苏云飞机械有限公司 | Diesel oil gear pump capable with improved safety performance |
| CN204572443U (en) * | 2015-04-30 | 2015-08-19 | 合肥长源液压股份有限公司 | Gear oil pump |
| CN205026353U (en) * | 2015-09-07 | 2016-02-10 | 潍柴动力股份有限公司 | Oil pump |
| CN207178197U (en) * | 2017-08-14 | 2018-04-03 | 金迈思液压设备（天津）有限公司 | High-pressure gear pump |
| CN211549974U (en) * | 2020-01-14 | 2020-09-22 | 浙江工业大学 | High-pressure-resistant high-temperature gear oil pump |
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| 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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210406 |