CN205918550U - Super high pressure plunger pump of wear -resisting type - Google Patents
Super high pressure plunger pump of wear -resisting type Download PDFInfo
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- CN205918550U CN205918550U CN201620515410.4U CN201620515410U CN205918550U CN 205918550 U CN205918550 U CN 205918550U CN 201620515410 U CN201620515410 U CN 201620515410U CN 205918550 U CN205918550 U CN 205918550U
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- eccentric
- wear
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- plunger pump
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Abstract
The utility model discloses a super high pressure plunger pump of wear -resisting type belongs to the hydraulic drive field, and this plunger pump includes disk seat and eccentric wheel, and the disk seat center is equipped with the cavity, the inner wall threaded connection of plunger case and cavity, and the cooperation of plunger case inner gap has the plunger, and the free end of plunger is fixed with the steel ball, be equipped with the arc recess on the lateral wall of eccentric wheel, the curvature radius of arc recess is the same with the curvature radius of steel ball, equipped with diamond alkene in the arc recess nickel the phosphorus composite plating, the eccentric department of eccentric wheel is equipped with the pivot. The utility model discloses an eccentric wheel track has high rigidity, high wearing feature, avoids the track to appear the spot corrosion too early and defects such as the metal peels off, orbital deformation, has reduced the shock and vibration of system, has prolonged the life of pump, and the steel ball of eccentric wheel circumference surface and the hardness low slightly of the high rigidity use that cooperatees simultaneously also accords with machine design's principle.
Description
Technical field
This utility model belongs to hydraulic drive field and in particular to a kind of wear-resisting type super-high-pressure plunger pump.
Background technology
During high-speed rotation, eccentric is also aggravated continuous the eccentric of plunger displacement pump with the abrasion of steel ball, inclined
In the presence of heart wheel guide pass bears pulsating load, guide pass occurs the phenomenons such as spot corrosion, hardness decline, wear extent increases, with
When the impact shock of system and flow pulsation phenomenon also can aggravate, be also unfavorable for extending the longevity of the bearing supporting eccentric two ends
Life.Existing plunger displacement pump can not bear big contact stress and high shock loading, and cam circumferential surface also can produce gold
Phase constitution is uneven, and in surface treatment process, workpiece is yielding, has the defects such as overheated structure, additionally, during plunger pump work
High pressure is up to 160pa, therefore it is required that eccentric surfaces have good mechanical integrated performance.
Multiple parts are provided with eccentric shaft, for high pressure, big flow, powerful plunger displacement pump, an axle are installed
There are multiple eccentrics, if necessary to change eccentric, need to remove multiple parts, during dismounting and installation, easily
Pull axle surface, need to carry out secondary operations, time-consuming.
In addition, hydraulic test all there are certain requirements to the cleannes of hydraulic oil, during dismounting part, easily allow ferrum
The pollutant such as bits enter the pump housing, easily cause the damage of hydraulic unit, clogging hydraulic pipeline, and the debris such as iron filings are easily damaged simultaneously
Sealing original paper in oil circuit, causes the sharp wear of sealing member, the service life of impact sealing member, the hydraulic oil of leakage also pollutes
Environment.
Therefore, develop a kind of wear-resisting type super-high-pressure plunger pump significant.
Utility model content
The purpose of this utility model is to provide a kind of wear-resisting type super-high-pressure plunger pump.
Based on above-mentioned purpose, this utility model adopts the following technical scheme that a kind of wear-resisting type super-high-pressure plunger pump, including valve
Seat and eccentric, valve seat center is provided with cavity, and plunger case is threaded connection with the inwall of cavity, and plunger case internal clearance is combined with
Plunger, the free end of plunger is fixed with steel ball；The side wall of eccentric is provided with arc groove, the radius of curvature of arc groove and steel
The radius of curvature of ball is identical, is provided with diamond alkene-Ni-P composite coating in arc groove, and the eccentric part of eccentric is provided with rotating shaft.
Further, the thickness of described diamond alkene-Ni-P composite coating is 6 μm, and hardness is 500kg/mm.
Further, the antetheca of described eccentric and rear wall are provided with insulating barrier.
Further, described valve seat rear end is provided with pore.
Further, the front end of plunger case is enlarging.
Diamond alkene-Ni-P composite coating is plated in the arc groove of eccentric by the following method:
(1) nanometer diamond alkene (mean diameter is 200nm-300nm) being dissolved in water or mass concentration is the sulphuric acid of 0.6-5%
In solution, form the modified Nano diamond alkene solution that concentration is 2-10g/l, ultrasonic disperse 30min, obtain nanometer diamond alkene moisture
Dispersion liquid；
(2) and then by nickel sulfate, Nickel dichloride., phosphoric acid, phosphorous acid it is dissolved in the water that temperature is 75 ~ 80 DEG C, form homogeneous base
The content of plinth plating solution, wherein nickel sulfate is 750g/l, and the content of Nickel dichloride. is 50g/l, and the content of phosphoric acid is 50g/l, phosphorous acid
Content be 13g/l；
(3) by nanometer diamond alkene dispersion liquid and homogeneous basic bath by volume (0.2 ~ 1.5): 20 mix, simultaneously with
The speed of 400r/min stirs 30 minutes, you can obtain stable nickel-phosphor-nanometer diamond alkene composite plating bath.
(4) anode adopts sheet nickel, and electric current density is 5a/dm, and electroplating time is 30min, can by above method
To obtain the nanometer diamond alkene-Ni-P composite coating being deposited on eccentric circumferential surface, wherein thickness of coating is 6 μm, Composite Coatings
The hardness of layer is 500kg/mm, and wearability improves 5 times compared with the surface of carburizing and Nitrizing Treatment.
Compared with prior art, this utility model has the advantage that
1st, this utility model is provided with diamond alkene-Ni-P composite coating in the arc groove of eccentric, and diamond alkene has good
Good dispersibility, makes diamond alkene-Ni-P composite coating thickness uniform；Diamond alkene has the characteristics that wear-resisting, corrosion-resistant, hardness is high,
Eccentric wheel track is made to have high rigidity, high-wearing feature, it is to avoid track spot corrosion and the deformation of metal peeling, track too early
Etc. defect, reduce the impact shock of system, extend the service life of pump, simultaneously the eccentric circumferential surface of high rigidity and slightly
The steel ball of soft is used in combination, and also complies with the principle of Machine Design.
2nd, the front end of plunger case is enlarging, and part steel ball can be made to enter plunger case, it is to avoid de- during steel ball rolling
Fall, also can reduce the length of plunger simultaneously, and then can prevent plunger from causing deformation to scrap because of long unstability.
3rd, plunger case and valve seat are individually processed, on the one hand, avoid and scrap whole valve seat because of the damage of plunger case, reduce
Maintenance cost；On the other hand, when needing the flow changing plunger displacement pump, only the plunger of major diameter and matched use need to be changed
Plunger case, that is, Flow-rate adjustment is convenient.
Brief description
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the right view of eccentric.
Specific embodiment
Below in conjunction with the accompanying drawings this utility model is described in detail.
A kind of wear-resisting type super-high-pressure plunger pump, including valve seat 5 and eccentric 1, valve seat 5 rear end is provided with pore 6, in valve seat 5
The heart is provided with cavity, and plunger case 4 is connected with the inner thread of cavity, and plunger case 4 internal clearance is combined with plunger 3, the free end of plunger 3
It is fixed with steel ball 2, the front end of plunger case 4 is arranged for enlarging, part steel ball 2 can be made to enter plunger case 4, reduce the length of plunger 3
Spending, and then can reduce plunger 3 causes deformation to scrap because long；The side wall of eccentric 1 is provided with arc groove 9, and arc is recessed
The radius of curvature of groove 9 is identical with the radius of curvature of steel ball 2, be provided with arc groove 9 thickness be 6 μm, hardness be 500kg/mm brill
Stone alkene-Ni-P composite coating, the antetheca of eccentric 1 and rear wall are provided with insulating barrier 7, and the eccentric part of eccentric 1 is provided with rotating shaft 8.
Both direction contrary check valve is installed in oil distribution casing, the rotary motion of eccentric 1 promotes plunger by steel ball 2
3 is reciprocating, when plunger 3 moves to the direction of compression leg plug cylinder 4 contracting sealed volume, the pressure liter of plunger case 4 sealed volume
Height, the one of check valve in oil distribution casing is opened, and is pressed oil, and when plunger 3 backhaul, plunger case 4 sealed volume instantaneously goes out
Existing negative pressure, another check valve is opened, and system carries out oil suction, the reciprocating motion of such plunger 3, so that hydraulic pump is continuously supplied toward system
Oil.
Diamond alkene-Ni-P composite coating is plated in the arc groove of eccentric by the following method:
(1) mean diameter is 200nm-300nm nanometer diamond alkene (its preparation method referenced patent cn
2015107492073) it is dissolved in the water or mass concentration sulfuric acid solution for 0.6-5%, form the modification that concentration is 2-10g/l and receive
Rice diamond alkene solution, ultrasonic disperse 30min, obtain nanometer diamond alkene aqueous dispersions；
(2) and then by nickel sulfate, Nickel dichloride., phosphoric acid, phosphorous acid it is dissolved in the water that temperature is 75 ~ 80 DEG C, form homogeneous base
The content of plinth plating solution, wherein nickel sulfate is 750g/l, and the content of Nickel dichloride. is 50g/l, and the content of phosphoric acid is 50g/l, phosphorous acid
Content be 13g/l；
(3) by nanometer diamond alkene dispersion liquid and homogeneous basic bath by volume (0.2 ~ 1.5): 20 mix, simultaneously with
The speed of 400r/min stirs 30 minutes, you can obtain stable nickel-phosphor-nanometer diamond alkene composite plating bath.
(4) anode adopts sheet nickel, and electric current density is 5a/dm, and electroplating time is 30 minutes, by above method just
Nanometer diamond alkene-the Ni-P composite coating being deposited in eccentric 1 arc groove 9 can be obtained, wherein thickness of coating is 6 μm,
The hardness of composite deposite is 500kg/mm, and wearability improves 5 times compared with the surface of carburizing and Nitrizing Treatment.
Claims (5)
1. a kind of wear-resisting type super-high-pressure plunger pump is it is characterised in that include valve seat and eccentric, valve seat center is provided with cavity, post
Plug cylinder is connected with the inner thread of cavity, and plunger case internal clearance is combined with plunger, and the free end of plunger is fixed with steel ball；Eccentric
Side wall be provided with arc groove, the radius of curvature of arc groove is identical with the radius of curvature of steel ball, is provided with plating in arc groove
Layer, the eccentric part of eccentric is provided with rotating shaft.
2. wear-resisting type super-high-pressure plunger pump according to claim 1 is it is characterised in that the thickness of described coating is 6 μm, firmly
Spend for 500kg/mm.
3. wear-resisting type super-high-pressure plunger pump according to claim 1 and 2 it is characterised in that the antetheca of described eccentric and
Rear wall is provided with insulating barrier.
4. wear-resisting type super-high-pressure plunger pump according to claim 1 is it is characterised in that described valve seat rear end is provided with pore.
5. wear-resisting type super-high-pressure plunger pump according to claim 1 is it is characterised in that the front end of plunger case is enlarging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620515410.4U CN205918550U (en) | 2016-05-31 | 2016-05-31 | Super high pressure plunger pump of wear -resisting type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620515410.4U CN205918550U (en) | 2016-05-31 | 2016-05-31 | Super high pressure plunger pump of wear -resisting type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205918550U true CN205918550U (en) | 2017-02-01 |
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ID=57876810
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620515410.4U Active CN205918550U (en) | 2016-05-31 | 2016-05-31 | Super high pressure plunger pump of wear -resisting type |
Country Status (1)
| Country | Link |
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| CN (1) | CN205918550U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116372150A (en) * | 2023-05-31 | 2023-07-04 | 亿川科技(成都)有限责任公司 | Automatic construction and beating system and method for ladle maintenance |
-
2016
- 2016-05-31 CN CN201620515410.4U patent/CN205918550U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116372150A (en) * | 2023-05-31 | 2023-07-04 | 亿川科技(成都)有限责任公司 | Automatic construction and beating system and method for ladle maintenance |
| CN116372150B (en) * | 2023-05-31 | 2023-09-08 | 亿川科技(成都)有限责任公司 | Automatic construction and beating system and method for ladle maintenance |
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