CN108757933A - A kind of emulsion motor and lubricating sleeve - Google Patents
A kind of emulsion motor and lubricating sleeve Download PDFInfo
- Publication number
- CN108757933A CN108757933A CN201810851458.6A CN201810851458A CN108757933A CN 108757933 A CN108757933 A CN 108757933A CN 201810851458 A CN201810851458 A CN 201810851458A CN 108757933 A CN108757933 A CN 108757933A
- Authority
- CN
- China
- Prior art keywords
- wall
- lubricating sleeve
- plunger
- emulsion
- lubrication hole
- 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.)
- Granted
Links
- 230000001050 lubricating effect Effects 0.000 title claims abstract description 70
- 239000000839 emulsion Substances 0.000 title claims abstract description 41
- 238000005461 lubrication Methods 0.000 claims abstract description 57
- 239000000314 lubricant Substances 0.000 claims abstract description 12
- 238000005507 spraying Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 239000004809 Teflon Substances 0.000 claims description 4
- 229920006362 Teflon® Polymers 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 238000005299 abrasion Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 description 15
- 239000010720 hydraulic oil Substances 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 239000002360 explosive Substances 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 3
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 210000000481 breast Anatomy 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004945 emulsification Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 239000002199 base oil Substances 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 208000021760 high fever Diseases 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J10/00—Engine or like cylinders; Features of hollow, e.g. cylindrical, bodies in general
- F16J10/02—Cylinders designed to receive moving pistons or plungers
- F16J10/04—Running faces; Liners
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
- F03C1/00—Reciprocating-piston liquid engines
- F03C1/002—Reciprocating-piston liquid engines details; components parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
- F03C1/00—Reciprocating-piston liquid engines
- F03C1/02—Reciprocating-piston liquid engines with multiple-cylinders, characterised by the number or arrangement of cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N15/00—Lubrication with substances other than oil or grease; Lubrication characterised by the use of particular lubricants in particular apparatus or conditions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N21/00—Conduits; Junctions; Fittings for lubrication apertures
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The invention discloses a kind of emulsion motor and lubricating sleeves, a kind of emulsion motor includes cylinder body, output shaft and pushing component, pushing component pushes output shaft to rotate under the action of emulsion, pushing component includes the movable chamber being arranged on cylinder body and plunger, plunger is arranged in movable chamber, it is provided with lubricating sleeve on the inner wall of movable chamber, the inner wall of the outer wall fitting movable chamber of lubricating sleeve, the outer wall of the inner wall fitting plunger of lubricating sleeve, the inner-wall spraying of lubricating sleeve has lubricant layer, it the advantage is that motor can be used in combination suitable for aqueous 95% or more emulsion, plunger is flexible up and down along the inside of lubricating sleeve, effective solution emulsion makes that hydraulic motor gets rusty and insufficient lubrication generates plunger occlusion, stuck problem, extend the service life of hydraulic motor.
Description
Technical field
The present invention relates to a kind of field of motors, more particularly, to a kind of emulsion motor and lubricating sleeve.
Background technology
General hydraulic motor operation medium is hydraulic oil.Hydraulic oil can not only amplify by hydraulic motor hydraulic energy defeated
Go out to be converted into mechanical energy, moreover it is possible to play the lubrication of each working part inside hydraulic motor, heat dissipation, inner flow passage and internal impurity are clear
The function of washing.It may be said that the not effect of hydraulic oil, hydraulic motor can not work.But in some special working conditions
Under, such as coal mining, natural gas extraction, crude oil is smelted and tunnel excavation etc. easy tos produce the ring of gas or flammable explosive gas
Under border, since hydraulic oil is oily matter, operation medium of the hydraulic oil as motor is easy to burn under the conditions of high temperature high fever
Fire, generating spark causes to explode, these operating modes cannot use hydraulic oil.
Based on the above reason, exploitation is a kind of to have prodigious market empty using emulsion as the emulsion motor of operation medium
Between.The mixture solution that operation medium selects base oil and water to mix in proportion is known as emulsion, and main component is aqueous
95% or more mixture solution.There are the characteristic that the lubricity of hydraulic oil and water can be fire-retardant, the fortune as motor using emulsion
Row medium is not only at low cost, but also adapts to inflammable and explosive working condition completely.
A kind of lubricating sleeve includes for hollow cylinder to be arranged between movable chamber and plunger, is sprayed on the inner wall of cylinder
There is lubricant layer, be distributed with multiple lubrication holes on cylinder, lubrication hole is connected to the outer wall and inner wall of cylinder, on the outer wall between lubrication hole
Multiple oil guide grooves are distributed, lubrication hole and oil guide groove are spirally distributed on the outer wall of lubricating sleeve.
In the prior art with emulsion motor there are the problem of：The mixing of oil and water based on the main component of emulsion
Object solution, main component are water, and the content of water is generally not less than 95%, and antirust and lubricating ability are more far short of what is expected than hydraulic oil,
So being easy to get rusty between motor internal core part plunger pair and motor cylinder plunger hole, lubrication is insufficient, often leads
It is engaged generation between the plunger hole of cylinder body when plunger being caused to run, stuck phenomenon, causes motor badly damaged or even scrap.
Invention content
Technical problem to be solved by the invention is to provide it is a kind of can in the environment of emulsion normal use one kind
Emulsion motor and lubricating sleeve, the present invention can avoid the generation of the occlusion stuck phenomenon between plunger and movable chamber, extend horse
The service life reached.
Technical solution is used by the present invention solves above-mentioned technical problem：A kind of hydraulic motor, including cylinder body, output shaft
And pushing component, pushing component push output shaft to rotate under the action of emulsion, pushing component includes being arranged on cylinder body
Movable chamber and plunger, plunger are arranged in movable chamber, it is characterised in that are provided with lubricating sleeve on the inner wall of the movable chamber, moisten
The inner wall of the outer wall fitting movable chamber of sliding sleeve, the outer wall of the inner wall fitting plunger of lubricating sleeve, the inner-wall spraying of lubricating sleeve have lubrication
Layer.
The further preferred embodiment of the present invention is：The lubricating sleeve is self-lubricating abrasion-resistant copper sheathing.
The further preferred embodiment of the present invention is：It is coated with teflon coatings on the inside of the lubricating sleeve.
The further preferred embodiment of the present invention is：The upper port of the lubricating sleeve is provided with fixed shirt rim.Described consolidates
It includes the first shirt rim and the second shirt rim to determine shirt rim, and first is provided between the first shirt rim and the second shirt rim and crosses oil groove and second excessively oily
Slot.
The further preferred embodiment of the present invention is：It is provided at least one repairing chamber in the cylinder body, is set on lubricating sleeve
It is equipped at least one lubrication hole, lubrication hole is connected to the inner and outer wall of lubricating sleeve, and repairing chamber is connected with lubrication hole.
The further preferred embodiment of the present invention is：Setting is provided on lubricating sleeve there are one repairing chamber in the cylinder body
Multiple lubrication holes, lubrication hole are connected to the inner and outer wall of lubricating sleeve, are provided with oil guide groove between lubrication hole, in multiple lubrication holes
First lubrication hole is connected with repairing chamber.
The further preferred embodiment of the present invention is：The flexible stroke of the plunger is less than any lubrication hole to plunger
The distance of bottom.
The further preferred embodiment of the present invention is：The lubrication hole and oil guide groove is spirally distributed in the outer of lubricating sleeve
On wall.
The further preferred embodiment of the present invention is：Draining cavity, repairing chamber are provided between the output shaft and cylinder body
It is connected with draining cavity, the lubricating oil in draining cavity is flowed into repairing intracavitary.
The further preferred embodiment of the present invention is：The pushing component further includes sealing nut, is set on the inside of sealing nut
It is equipped with seal combination circle and spring base, spring base is deep into the interior intracavitary of plunger, is additionally provided between spring base and inner cavity plunger
Resetting spring.
Lubricating sleeve is arranged in the present invention between movable chamber and plunger, and lubricant layer is coated on the inside of lubricating sleeve, and lubricant layer is included
There is lubricant effect, so that lubricant layer is required the greasy property of lubricating oil relatively low, aqueous 95% or more emulsion can be suitable for
It is used in combination, plunger is flexible up and down along the inside of lubricating sleeve, and effective solution emulsion makes hydraulic motor get rusty and moisten
The sliding bad plunger that leads to the problem of is engaged, is stuck, extend the service life of hydraulic motor, effective solution customer demand.
Description of the drawings
Fig. 1 is the sectional view of the present invention；
Fig. 2 is the enlarged drawing at A in Fig. 1；
Fig. 3 is the stereogram of lubricating sleeve in the present invention；
Fig. 4 is the side view of lubricating sleeve in the present invention；
Fig. 5 is the sectional view of lubricating sleeve in the present invention；
Fig. 6 is the enlarged drawing at B in the present invention；
Fig. 7 is the explosive view of the present invention.
Specific implementation mode
Below in conjunction with attached drawing embodiment, present invention is further described in detail.
As shown in Fig. 1-Fig. 7, a kind of hydraulic motor, including cylinder body 1, output shaft 2 and pushing component 3, pushing component 3 is in breast
Promotion output shaft 2 rotates under the action of changing liquid, and pushing component 3 includes the movable chamber 5 being arranged on cylinder body 1 and plunger 6, plunger 6
It is arranged in movable chamber 5, it is characterised in that lubricating sleeve 7, the outer wall patch of lubricating sleeve 7 are provided on the inner wall of the movable chamber 5
The inner wall of movable chamber 5, the outer wall of the inner wall fitting plunger 6 of lubricating sleeve 7 are closed, the inner-wall spraying of lubricating sleeve 7 has lubricant layer 8.
Lubricating sleeve 7 is self-lubricating abrasion-resistant copper sheathing 7 as shown in figures 3 to 6.Effective solution motor gets rusty and insufficient lubrication
It plunger occlusion, stuck is led to the problem of, extends the service life of motor, effective solution customer demand.Lubricating sleeve 7 is copper
Alloy material is not allowed to be also easy to produce corrosion in the environment of emulsion since copper is inert metal；And the wearability of copper alloy
Height, bearing capacity is strong, and thermal diffusivity is good, is more satisfactory material.
As shown in fig. 6, lubricant layer 8 is teflon coatings.It can effectively prevent corrosion between lubricating sleeve 7 and plunger 6, Teflon
Coating has the advantages that wearability is high, and self lubricity is good, non-corrosive；The greasy property between plunger 6 and lubricating sleeve 7 can be improved,
It prevents insufficient lubrication and plunger 6 and 7 inner wall of lubricating sleeve is made to be sintered and stuck.
As shown in figure 3, the upper port of lubricating sleeve 7 is provided with fixed shirt rim 9.The sealing nut 10 of 7 top of lubricating sleeve is pushed down
The fixation shirt rim 9 of lubricating sleeve can prevent lubricating sleeve 7 and plunger 6 from relative motion two occurs and usurp the throne movement.The fixation shirt rim
9 include the first shirt rim 11 and the second shirt rim 12, and first is provided between the first shirt rim 11 and the second shirt rim 12 and crosses oil groove 13 and the
Two oil groove 14, emulsions excessively pass through first to cross the oil groove 14 excessively of oil groove 13 or second and enter in plunger 6.
First way：It is provided at least one repairing chamber 15 in cylinder body 1, at least one lubrication is provided on lubricating sleeve 7
Hole 16, lubrication hole 16 are connected to the inner and outer wall of lubricating sleeve 7, and repairing chamber 15 is connected with lubrication hole 16.It is full of in repairing chamber 15
Emulsion, emulsion are flowed into lubrication hole 16 and are lubricated to lubricating sleeve 7.Emulsion can ensure 7 inner wall of lubricating sleeve with
6 sufficient lubrication of plunger.
As shown in Fig. 2, the second way：Setting is provided with multiple lubrications there are one repairing chamber on lubricating sleeve 7 in cylinder body 1
Hole 16, lubrication hole 16 are connected to the inner and outer wall of lubricating sleeve 7, oil guide groove 17, multiple lubrication holes 16 are provided between lubrication hole 16
In the first lubrication hole 4 be connected with repairing chamber 15.Emulsion initially enters the first lubrication hole 4, the emulsification in the first lubrication hole 4
Liquid flows to other lubrication holes 16 along oil guide groove 17, and the emulsion in lubrication hole 16 is flowed between plunger 6 and lubricating sleeve 7, breast
7 inner wall of lubricating sleeve and 6 sufficient lubrication of plunger can be ensured by changing liquid.
The flexible stroke of plunger 6 is less than the distance that any lubrication hole 16 arrives 6 bottom of plunger.Emulsification inside plunger 6
Liquid is in high pressure conditions, and the emulsion of 2 side of output shaft is in low-pressure state, and lubrication hole 16 is flexible without exposed with plunger 6,
The emulsion in high-pressure area is prevented to be flowed into area of low pressure.
As shown in Figure 2,3, lubrication hole 16 and oil guide groove 17 are spirally distributed on the outer wall of lubricating sleeve 7.Make lubrication
Emulsion prolongs the diversion trench 17 and is uniformly distributed in each position on 7 inner wall of lubricating sleeve, ensures 7 each friction part of lubricating sleeve at any time
It can adequately be lubricated.Draining cavity 18, repairing chamber 15 and draining cavity 18 are provided between output shaft 2 and cylinder body 1
It is connected, the lubricating oil in draining cavity 18 is flowed into repairing chamber 15.
As shown in Figure 1, Figure 7 shows, pushing component 3 further includes sealing nut 10, and 10 inside of sealing nut is provided with seal combination
Circle 21 and spring base 22, spring base 22 are deep into the interior intracavitary of plunger 6, reset bullet are additionally provided between spring base 22 and plunger 6
Spring 23.
As shown in figures 3 to 6, a kind of lubricating sleeve 7 includes for hollow cylinder to be arranged between movable chamber 5 and plunger 6
4, lubricant layer 8 is coated on the inner wall of cylinder 4, multiple lubrication holes 16 are distributed on cylinder 4, and lubrication hole 16 is connected to the outer of cylinder 4
Wall and inner wall are distributed multiple oil guide grooves 17 on the outer wall between lubrication hole 16, and lubrication hole 16 and oil guide groove 17 are spirally distributed
On the outer wall of lubricating sleeve 7.
A kind of emulsion motor provided by the present invention and lubricating sleeve are described in detail above, it is used herein
Principle and implementation of the present invention are described for specific case, and the explanation of above example is only intended to help to understand this
Invention and core concept.It should be pointed out that for those skilled in the art, not departing from the principle of the invention
Under the premise of, it can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the claims in the present invention
In protection domain.
Claims (10)
1. a kind of emulsion motor, including cylinder body, output shaft and pushing component, pushing component push defeated under the action of emulsion
Shaft rotates, and pushing component includes the movable chamber being arranged on cylinder body and plunger, and plunger is arranged in movable chamber, it is characterised in that
Lubricating sleeve, the inner wall of the outer wall fitting movable chamber of lubricating sleeve, the inner wall patch of lubricating sleeve are provided on the inner wall of the movable chamber
The inner-wall spraying of the outer wall of zygostyle plug, lubricating sleeve has lubricant layer.
2. a kind of emulsion motor according to claim 1, it is characterised in that the lubricating sleeve is self-lubricating abrasion-resistant copper
Set, the lubricant layer are teflon coatings.
3. a kind of emulsion motor according to claim 1, it is characterised in that the upper port of the lubricating sleeve is provided with
Fixed shirt rim；The fixation shirt rim includes the first shirt rim and the second shirt rim, and the is provided between the first shirt rim and the second shirt rim
One, which crosses oil groove and second, crosses oil groove.
4. a kind of emulsion motor according to claim 1, it is characterised in that be provided in the cylinder body at least one
Repairing chamber, at least one lubrication hole is provided on lubricating sleeve, and lubrication hole is connected to the inner and outer wall of lubricating sleeve, repairing chamber and lubrication
Hole is connected.
5. a kind of emulsion motor according to claim 1, it is characterised in that there are one repairings for setting in the cylinder body
Chamber, multiple lubrication holes are provided on lubricating sleeve, and lubrication hole is connected to the inner and outer wall of lubricating sleeve, is set on the outer wall between lubrication hole
It is equipped with oil guide groove, the first lubrication hole in multiple lubrication holes is connected with repairing chamber.
6. a kind of emulsion motor according to claim 5, it is characterised in that the flexible stroke of the plunger, which is less than, appoints
Distance of a lubrication hole to plunger base one by one.
7. a kind of emulsion motor according to claim 6, it is characterised in that the lubrication hole and oil guide groove is helically
Shape is distributed on the outer wall of lubricating sleeve.
8. a kind of emulsion motor according to claim 5-7, it is characterised in that set between the output shaft and cylinder body
It is equipped with draining cavity, repairing chamber is connected with draining cavity, and the emulsion in draining cavity is flowed into repairing intracavitary.
9. a kind of emulsion motor according to claim 1, it is characterised in that the pushing component further includes sealing spiral shell
Cap, sealing nut inside are provided with seal combination circle and spring base, and spring base is deep into the interior intracavitary of plunger, spring base and plunger
Between be additionally provided with resetting spring.
10. a kind of lubricating sleeve, it is characterised in that include for being arranged between movable chamber and plunger hollow cylinder, cylinder it is interior
It is coated with lubricant layer on wall, is distributed with multiple lubrication holes on cylinder, lubrication hole is connected to the outer wall and inner wall of cylinder, between lubrication hole
Outer wall on be distributed multiple oil guide grooves, lubrication hole and oil guide groove are spirally distributed on the outer wall of lubricating sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810851458.6A CN108757933B (en) | 2018-07-30 | 2018-07-30 | Emulsion motor and lubricating sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810851458.6A CN108757933B (en) | 2018-07-30 | 2018-07-30 | Emulsion motor and lubricating sleeve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108757933A true CN108757933A (en) | 2018-11-06 |
| CN108757933B CN108757933B (en) | 2024-04-26 |
Family
ID=63971779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810851458.6A Active CN108757933B (en) | 2018-07-30 | 2018-07-30 | Emulsion motor and lubricating sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108757933B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718833A (en) * | 2022-03-08 | 2022-07-08 | 烟台杰瑞石油服务集团股份有限公司 | Bushing structure and hydraulic end valve box of fracturing pump |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226482A (en) * | 2011-04-21 | 2011-10-26 | 浙江新三荣制冷有限公司 | Piston four-way reversing valve for refrigerating system |
| CN202954965U (en) * | 2012-12-02 | 2013-05-29 | 安徽工业大学 | Plunger with spiral lubricating oil grooves and used for inclined-disc-type axial plunger pump |
| CN108302033A (en) * | 2018-03-04 | 2018-07-20 | 太原理工大学 | The axial scalable cylinder component of a kind of high water base pluger type hydraulic pump or motor |
| CN208845713U (en) * | 2018-07-30 | 2019-05-10 | 宁波恒通诺达液压股份有限公司 | A kind of emulsion motor and lubricating sleeve |
-
2018
- 2018-07-30 CN CN201810851458.6A patent/CN108757933B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226482A (en) * | 2011-04-21 | 2011-10-26 | 浙江新三荣制冷有限公司 | Piston four-way reversing valve for refrigerating system |
| CN202954965U (en) * | 2012-12-02 | 2013-05-29 | 安徽工业大学 | Plunger with spiral lubricating oil grooves and used for inclined-disc-type axial plunger pump |
| CN108302033A (en) * | 2018-03-04 | 2018-07-20 | 太原理工大学 | The axial scalable cylinder component of a kind of high water base pluger type hydraulic pump or motor |
| CN208845713U (en) * | 2018-07-30 | 2019-05-10 | 宁波恒通诺达液压股份有限公司 | A kind of emulsion motor and lubricating sleeve |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718833A (en) * | 2022-03-08 | 2022-07-08 | 烟台杰瑞石油服务集团股份有限公司 | Bushing structure and hydraulic end valve box of fracturing pump |
| CN114718833B (en) * | 2022-03-08 | 2024-01-23 | 烟台杰瑞石油服务集团股份有限公司 | Hydraulic end valve box of fracturing pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108757933B (en) | 2024-04-26 |
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