CN105179230B - A kind of external gear rotary pump - Google Patents
A kind of external gear rotary pump Download PDFInfo
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- CN105179230B CN105179230B CN201510734963.9A CN201510734963A CN105179230B CN 105179230 B CN105179230 B CN 105179230B CN 201510734963 A CN201510734963 A CN 201510734963A CN 105179230 B CN105179230 B CN 105179230B
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- short axle
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Abstract
The present invention discloses a kind of external gear rotary pump, including the pump housing, rear cover, front cover and screw, the pump housing, rear cover and front cover are fixedly connected sequentially by screw, gland is provided in the rear cover, the gland is equipped with more than one, the gland is connect with rear cover clamping, the gland side is respectively arranged with long axis and short axle, gear pair is provided between the long axis and short axle, the long axis is connected with short axle by gear pair, the long axis and short axle both ends are respectively arranged with needle bearing, the long axis and short axle are rotatablely connected with needle bearing respectively, leakage channel is provided between the needle bearing, the front cover side is provided with seal receptacle, the seal receptacle is fixedly connected with front cover, sealing ring is provided in the seal receptacle, the external gear rotary pump result is simple, operation stability is high, long service life, sealing effect is good.
Description
Technical field
The present invention relates to a kind of pump housing technical fields, more particularly to a kind of external gear rotary pump.
Background technique
Gear pump is that swept volume changes and movement is to convey liquid or make by being formed by between pumping cylinder and meshing gear
Pressurization drum pump.Two enclosure spaces are formed by two gears, the pump housing and front and rear covers, when gear rotation, are out of gear
The volume in the space of side becomes larger from small, forms vacuum, draws liquid into, the volume in the space of gear engagement side from becoming smaller greatly, and
Liquid is squeezed into pipeline.Suction chamber and discharge chamber are that the path of contact of two gears is leaned on to separate.The outlet of gear pump
Pressure depend entirely on the size of resistance at pump discharge.
The concept of gear pump is that very simply, i.e., its most basic form is exactly that the identical gear of two sizes is tight at one
Intermeshing rotation in leakproof fit shell, the inside of this shell is similar to the figure of eight, and two gears are mounted in the inside, gear
Outer diameter and two sides and shell are fitted close.Material from extruder enters among two gears in suction inlet, and is full of this
One space is finally discharged in two tooth engagements as the rotation of tooth is moved along shell.In term, gear pump is also positive row
Measure device, i.e., as the piston in a cylinder barrel, as soon as when tooth enters the fluid space of another tooth, liquid is by mechanically
It squeezes and ejects.Because liquid be it is incompressible, liquid and tooth cannot occupy the same space in the same time, in this way,
Liquid is just excluded.Due to the continuous engagement of tooth, this phenomenon is just continuously occurring, thus also just provides in the outlet of pump
One continuous exclusion amount pumps every revolution, and the amount of discharge is the same.With the rotation incessantly of drive shaft, pump is just not yet
Fluid is discontinuously discharged.The flow of pump is directly related with the revolving speed of pump.
In fact, there is minimal amount of fluid loss in pump, this prevents the operational efficiency of pump from reaching 100%, because these
Fluid is used to lubrication bearing and gear two sides, and the pump housing also must not blind-mate, therefore cannot make 100% ground of fluid from
Outlet discharge, so a small amount of fluid loss is inevitable.However pump still can be run well, to most of extruded materials
For, it still can achieve 93%~98% efficiency.
Gear wear in current existing gear pump is more serious, causes sealing performance to decline, service life is not grown.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of result is simple, operation stability is high, long service life, sealing
The good external gear rotary pump of effect.
To solve the above problems, the present invention adopts the following technical scheme:
A kind of external gear rotary pump, including the pump housing, rear cover, front cover and screw, the pump housing, rear cover and front cover pass through screw
It is fixedly connected sequentially, gland is provided in the rear cover, the gland is equipped with more than one, and the gland and rear cover clamping connect
Connect, the gland side is respectively arranged with long axis and short axle, be provided with gear pair between the long axis and short axle, the long axis and
Short axle is connected by gear pair, and the long axis and short axle both ends are respectively arranged with needle bearing, the long axis and short axle respectively with
Needle bearing is rotatablely connected, and is provided with leakage channel between the needle bearing, the front cover side is provided with seal receptacle, described
Seal receptacle is fixedly connected with front cover, and sealing ring is provided in the seal receptacle, and the gear pair is matched by mass fraction by following
Material is made: 55-60 parts of nitrated steel, 5-10 parts of lime stone, 2-8 parts of cast alumin(i)um, 6-10 parts of Antaciron, 2-5 parts of carbon dust, titanium dioxide
1-3 parts of manganese, -2 parts of silica 1,0.5-1 parts of bentonite, 3-5 parts of bismuth oxide, 1-2 parts of boron oxide and 2-4 parts of antimony trioxide.
Further, the long shaft end is provided with key.
Further, the key and long axis interference fit connect.
Further, the pump housing bottom is provided with straight pin.
Further, the pump housing, rear cover and front cover are sequentially connected by straight pin.
A kind of manufacturing method of the gear pair of external gear rotary pump, comprising the following steps:
1) by 55-60 parts of nitrated steel, 5-10 parts of lime stone, 2-8 parts of cast alumin(i)um, 6-10 parts of Antaciron, 2-5 parts of carbon dust, two
1-3 parts of manganese oxide, -2 parts of silica 1,0.5-1 parts of bentonite, 3-5 parts of bismuth oxide, 1-2 parts of boron oxide and antimony trioxide 2-4
It is kept for 850 DEG C -900 DEG C of meltings 25-30 minutes in part investment smelting furnace, obtains melt, it is spare；
2) melt cast obtained by step 1) is obtained into gear pair blank into mold, it is spare；
3) gear pair blank obtained by step 2 is passed through into the hot rolling of turning-- gear shaping technique, then carries out flank of tooth high-frequency induction resistance
Heating quenching, final refine benchmark and finishing tooth form.
The beneficial effects of the present invention are: the long axis and short axle of setting are able to drive gear pair engagement, so that pump housing inner volume
Become larger from small, form vacuum, draw liquid into, straight pin keeps the pump housing, rear cover and front cover easy for installation, and sealing ring keeps sealing
Effect is good, and leakage channel can adjust pump housing air pressure balance when not in use, and the material and processing technology that gear pair uses can
It keeps that there is high-wearing feature and high-fatigue strength, keeps long service life, stability is high.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of structure chart of external gear rotary pump of the invention.
Specific embodiment
Embodiment 1
As shown in fig.1, a kind of external gear rotary pump, including the pump housing 1, rear cover 2, front cover 3 and screw 4, the pump housing 1,
Rear cover 2 and front cover 3 are fixedly connected sequentially by screw 4, are provided with gland 5 in the rear cover 2, the gland 5 be equipped with one with
On, the gland 5 is connect with 2 clamping of rear cover, and 5 side of gland is respectively arranged with long axis 6 and short axle 7, the long axis 6 and short
It is provided with gear pair 8, the long axis 6 and short axle 7 between axis 7 to connect by gear pair 8, the long axis 6 and 7 both ends of short axle difference
It is provided with needle bearing 9, the long axis 6 and short axle 7 are rotatablely connected with needle bearing 9 respectively, are arranged between the needle bearing 9
There is leakage channel 10,3 side of front cover is provided with seal receptacle 11, and the seal receptacle 11 is fixedly connected with front cover 3, the sealing
Sealing ring 12 is provided in seat 11, the gear pair 8 is matched by mass fraction and is made of following material: 55 parts of nitrated steel, lime
5 parts of stone, 2 parts of cast alumin(i)um, 6 parts of Antaciron, 2 parts of carbon dust, 1 part of manganese dioxide, silica 1 part, 0.5 part of bentonite, bismuth oxide 3
Part, 1 part of boron oxide and 2 parts of antimony trioxide.
7 end of long axis is provided with key 13.
The key 13 is connected with the interference fit of long axis 7.
1 bottom of the pump housing is provided with straight pin 14.
The pump housing 1, rear cover 2 and front cover 3 are sequentially connected by straight pin 14.
A kind of manufacturing method of the gear pair 8 of external gear rotary pump, comprising the following steps:
1) by 55 parts of nitrated steel, 5 parts of lime stone, 2 parts of cast alumin(i)um, 6 parts of Antaciron, 2 parts of carbon dust, 1 part of manganese dioxide, dioxy
1 part of SiClx, 3 parts of bismuth oxide, keeps 850 DEG C -900 DEG C in 2 parts of investment smelting furnaces of 1 part of boron oxide and antimony trioxide at 0.5 part of bentonite
Melting 25-30 minutes, melt is obtained, it is spare；
2) melt cast obtained by step 1) is obtained into gear pair blank into mold, it is spare；
3) gear pair blank obtained by step 2 is passed through into the hot rolling of turning-- gear shaping technique, then carries out flank of tooth high-frequency induction resistance
Heating quenching, final refine benchmark and finishing tooth form.
Embodiment 2
As shown in fig.1, a kind of external gear rotary pump, including the pump housing 1, rear cover 2, front cover 3 and screw 4, the pump housing 1,
Rear cover 2 and front cover 3 are fixedly connected sequentially by screw 4, are provided with gland 5 in the rear cover 2, the gland 5 be equipped with one with
On, the gland 5 is connect with 2 clamping of rear cover, and 5 side of gland is respectively arranged with long axis 6 and short axle 7, the long axis 6 and short
It is provided with gear pair 8, the long axis 6 and short axle 7 between axis 7 to connect by gear pair 8, the long axis 6 and 7 both ends of short axle difference
It is provided with needle bearing 9, the long axis 6 and short axle 7 are rotatablely connected with needle bearing 9 respectively, are arranged between the needle bearing 9
There is leakage channel 10,3 side of front cover is provided with seal receptacle 11, and the seal receptacle 11 is fixedly connected with front cover 3, the sealing
Sealing ring 12 is provided in seat 11, the gear pair 8 is matched by mass fraction and is made of following material: 57.5 parts of nitrated steel, stone
7.5 parts of lime stone, 5 parts of cast alumin(i)um, 8 parts of Antaciron, 3.5 parts of carbon dust, 2 parts of manganese dioxide .5 parts of silica 1, bentonite 0.75
Part, 4 parts of bismuth oxide, 1.5 parts of boron oxide and 3 parts of antimony trioxide.
7 end of long axis is provided with key 13.
The key 13 is connected with the interference fit of long axis 7.
1 bottom of the pump housing is provided with straight pin 14.
The pump housing 1, rear cover 2 and front cover 3 are sequentially connected by straight pin 14.
A kind of manufacturing method of the gear pair 8 of external gear rotary pump, comprising the following steps:
1) by 57.5 parts of nitrated steel, 7.5 parts of lime stone, 5 parts of cast alumin(i)um, 8 parts of Antaciron, 3.5 parts of carbon dust, manganese dioxide 2
It is protected in part .5 parts of silica 1,0.75 part of bentonite, 4 parts of bismuth oxide, 1.5 parts of boron oxide and 3 parts of investment smelting furnaces of antimony trioxide
850 DEG C of -900 DEG C of meltings 25-30 minutes are held, melt is obtained, it is spare；
2) melt cast obtained by step 1) is obtained into gear pair blank into mold, it is spare；
3) gear pair blank obtained by step 2 is passed through into the hot rolling of turning-- gear shaping technique, then carries out flank of tooth high-frequency induction resistance
Heating quenching, final refine benchmark and finishing tooth form.
Embodiment 3
As shown in fig.1, a kind of external gear rotary pump, including the pump housing 1, rear cover 2, front cover 3 and screw 4, the pump housing 1,
Rear cover 2 and front cover 3 are fixedly connected sequentially by screw 4, are provided with gland 5 in the rear cover 2, the gland 5 be equipped with one with
On, the gland 5 is connect with 2 clamping of rear cover, and 5 side of gland is respectively arranged with long axis 6 and short axle 7, the long axis 6 and short
It is provided with gear pair 8, the long axis 6 and short axle 7 between axis 7 to connect by gear pair 8, the long axis 6 and 7 both ends of short axle difference
It is provided with needle bearing 9, the long axis 6 and short axle 7 are rotatablely connected with needle bearing 9 respectively, are arranged between the needle bearing 9
There is leakage channel 10,3 side of front cover is provided with seal receptacle 11, and the seal receptacle 11 is fixedly connected with front cover 3, the sealing
Sealing ring 12 is provided in seat 11, the gear pair 8 is matched by mass fraction and is made of following material: 60 parts of nitrated steel, lime
10 parts of stone, 8 parts of cast alumin(i)um, 10 parts of Antaciron, 5 parts of carbon dust, 3 parts of manganese dioxide, 2 parts of silica, 1 part of bentonite, bismuth oxide 5
Part, 2 parts of boron oxide and 4 parts of antimony trioxide.
7 end of long axis is provided with key 13.
The key 13 is connected with the interference fit of long axis 7.
1 bottom of the pump housing is provided with straight pin 14.
The pump housing 1, rear cover 2 and front cover 3 are sequentially connected by straight pin 14.
A kind of manufacturing method of the gear pair 8 of external gear rotary pump, comprising the following steps:
1) by 60 parts of nitrated steel, 10 parts of lime stone, 8 parts of cast alumin(i)um, 10 parts of Antaciron, 5 parts of carbon dust, 3 parts of manganese dioxide, two
2 parts of silica, 5 parts of bismuth oxide, keeps 850 DEG C -900 DEG C in 4 parts of investment smelting furnaces of 2 parts of boron oxide and antimony trioxide at 1 part of bentonite
Melting 25-30 minutes, melt is obtained, it is spare；
2) melt cast obtained by step 1) is obtained into gear pair blank into mold, it is spare；
3) gear pair blank obtained by step 2 is passed through into the hot rolling of turning-- gear shaping technique, then carries out flank of tooth high-frequency induction resistance
Heating quenching, final refine benchmark and finishing tooth form.
The beneficial effects of the present invention are: the long axis and short axle of setting are able to drive gear pair engagement, so that pump housing inner volume
Become larger from small, form vacuum, draw liquid into, straight pin keeps the pump housing, rear cover and front cover easy for installation, and sealing ring keeps sealing
Effect is good, and leakage channel can adjust pump housing air pressure balance when not in use, and the material and processing technology that gear pair uses can
It keeps that there is high-wearing feature and high-fatigue strength, keeps long service life, stability is high.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
The change or replacement expected without creative work, should be covered by the protection scope of the present invention, therefore, of the invention
Protection scope should be determined by the scope of protection defined in the claims.
Claims (1)
1. a kind of external gear rotary pump, it is characterised in that: including the pump housing, rear cover, front cover and screw, the pump housing, rear cover and preceding
Lid is fixedly connected sequentially by screw, and gland is provided in the rear cover, and the gland is equipped with more than one, and the gland is with after
The connection of lid clamping, the gland side is respectively arranged with long axis and short axle, gear pair, institute is provided between the long axis and short axle
It states long axis and is connected with short axle by gear pair, the long axis and short axle both ends are respectively arranged with needle bearing, the long axis and short
Axis is rotatablely connected with needle bearing respectively, is provided with leakage channel between the needle bearing, the front cover side is provided with close
Seat is sealed, the seal receptacle is fixedly connected with front cover, sealing ring is provided in the seal receptacle, the gear pair is matched by mass fraction
Than being made of following material: 55-60 parts of nitrated steel, 5-10 parts of lime stone, 2-8 parts of cast alumin(i)um, 6-10 parts of Antaciron, carbon dust 2-5
Part, 1-3 parts of manganese dioxide, -2 parts of silica 1,0.5-1 parts of bentonite, 3-5 parts of bismuth oxide, 1-2 parts of boron oxide and three oxidations
2-4 parts of antimony, the long shaft end is provided with key, and the key and long axis interference fit connect, and the pump housing bottom is provided with cylinder
Pin, the pump housing, rear cover and front cover are sequentially connected by straight pin, the manufacturing method of the gear pair of the external gear rotary pump, packet
Include following steps:
1) by 55-60 parts of nitrated steel, 5-10 parts of lime stone, 2-8 parts of cast alumin(i)um, 6-10 parts of Antaciron, 2-5 parts of carbon dust, titanium dioxide
1-3 parts of manganese, -2 parts of silica 1,0.5-1 parts of bentonite, 3-5 parts of bismuth oxide, 1-2 parts of boron oxide and 2-4 parts of antimony trioxide throwings
Enter to keep 850 DEG C in smelting furnace -900 DEG C of meltings 25-30 minutes, obtains melt, it is spare；
2) melt cast obtained by step 1) is obtained into gear pair blank into mold, it is spare；
3) gear pair blank obtained by step 2 is passed through into the hot rolling of turning-- gear shaping technique, then carries out flank of tooth high frequency induction and resistance heating
Quenching, final refine benchmark and finishing tooth form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510734963.9A CN105179230B (en) | 2015-11-03 | 2015-11-03 | A kind of external gear rotary pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510734963.9A CN105179230B (en) | 2015-11-03 | 2015-11-03 | A kind of external gear rotary pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105179230A CN105179230A (en) | 2015-12-23 |
| CN105179230B true CN105179230B (en) | 2018-12-07 |
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ID=54901565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510734963.9A Active CN105179230B (en) | 2015-11-03 | 2015-11-03 | A kind of external gear rotary pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105179230B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111701523B (en) * | 2020-06-28 | 2022-06-14 | 中国兵器装备集团自动化研究所 | Kneading safety transmission device |
| CN114717463A (en) * | 2022-04-27 | 2022-07-08 | 江苏轩辕特种材料科技有限公司 | Wear-resistant high-strength alloy material and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2299951Y (en) * | 1996-11-28 | 1998-12-09 | 庞玉伦 | Multi-functional gear pump |
| CN1204697A (en) * | 1997-04-29 | 1999-01-13 | 奥瓦科钢铁股份公司 | Nitriding steel |
| CN101899610A (en) * | 2010-08-31 | 2010-12-01 | 卫辉熔金高温材料有限责任公司 | Wet pan gear and manufacturing method thereof |
| CN202250818U (en) * | 2011-09-20 | 2012-05-30 | 天津市天机液压机械有限公司 | Gear pump with dual side plates |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09144667A (en) * | 1995-11-22 | 1997-06-03 | Shimadzu Corp | Solution supplying gear pump |
-
2015
- 2015-11-03 CN CN201510734963.9A patent/CN105179230B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2299951Y (en) * | 1996-11-28 | 1998-12-09 | 庞玉伦 | Multi-functional gear pump |
| CN1204697A (en) * | 1997-04-29 | 1999-01-13 | 奥瓦科钢铁股份公司 | Nitriding steel |
| CN101899610A (en) * | 2010-08-31 | 2010-12-01 | 卫辉熔金高温材料有限责任公司 | Wet pan gear and manufacturing method thereof |
| CN202250818U (en) * | 2011-09-20 | 2012-05-30 | 天津市天机液压机械有限公司 | Gear pump with dual side plates |
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| Publication number | Publication date |
|---|---|
| CN105179230A (en) | 2015-12-23 |
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