CN108317077A - A kind of high pressurize air-driven hydraulic pump - Google Patents
A kind of high pressurize air-driven hydraulic pump Download PDFInfo
- Publication number
- CN108317077A CN108317077A CN201810248978.8A CN201810248978A CN108317077A CN 108317077 A CN108317077 A CN 108317077A CN 201810248978 A CN201810248978 A CN 201810248978A CN 108317077 A CN108317077 A CN 108317077A
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- China
- Prior art keywords
- hydraulic pump
- babinet
- oil
- air
- driven hydraulic
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- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/001—Noise damping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
- F04B9/12—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The present invention relates to hydraulic pressure pump technical fields, a kind of high pressurize air-driven hydraulic pump is disclosed, including babinet, Box Cover, hydraulic seat and foot pedal composition, the babinet are tightly connected with Box Cover, the babinet is set as three sections, is separated by two sections of ladder walls of box house；The hydraulic seat is located on Box Cover, is provided with spring clip, oil inlet and outlet and silencer；The foot pedal is located at air-driven hydraulic pump topmost；The box house is made of cylinder portion and pump valve part.The present invention is distinguished by rationalizing to body structure, is simplified cylinder portion and pump valve part installation procedure, is improved cabinet space utilization rate；Meanwhile using the big pressurize steel ball of diameter, pressure maintaining performance is promoted, have the characteristics that pressure maintaining performance is good, pressure output is big, Portable durable.
Description
Technical field
The present invention relates to hydraulic pressure pump technical fields, are a kind of high pressurize air-driven hydraulic pumps specifically.
Background technology
Air-driven hydraulic pump forms pumping pressure difference by the reciprocating motion of the pistons in air-driven hydraulic pump, by hydraulic oil by hydraulic pressure
Case is pumped to hydraulic cylinder, to realize the lift process of hydraulic cylinder.Compared to traditional electric hydraulic pump, air-driven hydraulic pump has clear
The clean energy, without the features such as electric spark and flame, use cost are cheap, small and product is light and handy, be widely used in metallurgical, machine
The fields such as tool, petrochemical industry, auto repair, particularly suitable underground coal mine have the occasion of requirement of explosion proof to use.
Currently, the use of air-driven hydraulic pump starts slowly to popularize, the relevant technologies have also obtained very fast, preferable development.
If the patent No. " 201710766096.6 " describes a kind of air-driven hydraulic pump, action sensitivity is high, pump oil effect is good；The patent No.
" 201510140499.0 " describe a kind of liquid self-feeding air-driven hydraulic pump with liquid function, by air pressure ontology, gas piston, squeeze
Press piston rod, oil pressure ontology and oil outlet one-way valve design in oil storage box, with the functional unification of both hydraulic pump and oil storage box
Feature；The patent No. " 201610495517.1 " describes a kind of air-driven hydraulic pump, replaces leaf using gear type structure air motor
Slice structure makes the airtight performance of equipment greatly improve, and extends service life of equipment.Although about air-driven hydraulic pump patent compared with
It is more, but there is no relevant report for the improved technology in terms of air-driven hydraulic pump pressurize.In fact, currently on the market pneumatic
It is bad mostly to there is pressure maintaining performance in hydraulic pump, provides that hydraulic pressure is inadequate, greatly limits the application of air-driven hydraulic pump.
Invention content
It is an object of the invention to overcome deficiency in the prior art, a kind of high pressurize air-driven hydraulic pump is provided, has and protects
The features such as performance is good, pressure output is big, Portable durable is pressed, in the hydraulic pump of equal volume size, can utmostly be carried
For hydraulic power.It is proved by production practices, high pressurize air-driven hydraulic pump of the invention is under existing production specifications, shape
Volume maximum can accomplish to be more than 1.0m3, can reach maximum output pressure and be more than 70Mpa, most compared to the existing about 50Mpa in market
Big output pressure improves at least 50%, has expanded the application field of air-driven hydraulic pump significantly.
To achieve the goals above, the present invention takes technical solution below to be achieved：A kind of high pressurize Pneumatic hydraulic
Pump, including babinet, Box Cover, hydraulic seat and foot pedal composition, the babinet are tightly connected with Box Cover, are included in all babinets
Cover gab junction is both provided with sealing ring, and the inner surface that Box Cover is contacted with babinet inlays sealing rubber pad；The babinet is set
Three sections are set to, is separated by two sections of ladder walls of box house, box house is provided with bolt column, is opened at the top of the bolt column
There is bolt hole, Box Cover is fixed on babinet by bolt；The hydraulic seat is arranged on Box Cover, is provided on hydraulic seat
Spring clip；The foot pedal is located at air-driven hydraulic pump topmost；Air inlet valve block, the air inlet are provided with above the Box Cover
Valve block includes air inlet, compression spring and valve rod；The box house is made of cylinder portion and pump valve part, the cylinder part subpackage
Cylinder barrel, piston system, spool and resetting spring are included, the piston system is provided with independent gas piston, and the piston system is whole
Body is located in the cylinder barrel, and the resetting spring is sleeved on the spool；The pump valve part includes oil pressure valve block, oil suction system
System and defuelling system composition, the oil pressure valve block connection oil absorption system and defuelling system, the oil absorption system and defuelling system are logical
The connection of lateral oil circuit hole is crossed, stifled oily steel ball closing is used on the right side of lateral oil circuit hole；The oil absorption system includes oil sucting one-way valve and guarantor
Pressing steel balls, the oil sucting one-way valve bottom are immersed in hydraulic oil, using being detachably connected and fixed in oil pressure valve block bottom,
And it is connected to pressurize steel ball by oil discharge passage；The defuelling system includes fuel outlet valve and drains the oil bar, at the top of the bar of draining the oil with
Foot pedal interlocks contact, coordinates the valve rod of air inlet valve block, completes the feed flow of air-driven hydraulic pump and returns liquid work.
As an improvement the ladder wall of the babinet of the high pressurize air-driven hydraulic pump is U-shaped structure.
As an improvement the bolt column quantity of the babinet of the high pressurize air-driven hydraulic pump is 4 ~ 12.
As an improvement the babinet of the high pressurize air-driven hydraulic pump is provided with liquid level peep hole, liquid level peep hole position
At the 1/3 ~ 2/3 of babinet total height.
As an improvement being provided with silencer on the hydraulic seat of the high pressurize air-driven hydraulic pump, silencer is communicated in
Hydraulic pump vibration sounding position.
As an improvement the spring clip on the hydraulic seat of the high pressurize air-driven hydraulic pump is solid by hexagon socket head cap screw
It is scheduled on hydraulic seat.
As an improvement being provided with symmetrical grooves inside the cylinder barrel of the high pressurize air-driven hydraulic pump.
As an improvement the pressurize steel ball size of the high pressurize air-driven hydraulic pump is 8 ~ 15mm.
As an improvement the oil pressure valve block of the high pressurize air-driven hydraulic pump uses high-strength aluminum alloy material, through squeezing
Molded technique is prepared.
As an improvement the foot pedal and babinet of the high pressurize air-driven hydraulic pump are aluminum alloy material.
A kind of high pressurize air-driven hydraulic pump of the present invention, simple in structure, air-tightness is good, can realize high pressure values
Output；Inlay sealing rubber pad in babinet interior surface, increase the air-tightness of hydraulic pump entirety, effectively prevent air, dust and
The impurity such as liquid enter babinet；Core component of the oil pressure valve block as air-driven hydraulic pump subjects the fast reciprocating impact of valve rod,
Although common steel or stainless steel hardness are high, processing and material cost are high, and easy oxygen under the action of compressed air
Metaplasia is become rusty, and is polluted oil circuit, is caused hydraulic pump whole service life not grown, using high-strength aluminum alloy material, and through extrusion forming
Technique is prepared, and reduces oil pressure valve block difficulty of processing, and oil circuit is made to clean, and greatly improves air-driven hydraulic pump and uses the longevity
Life, also mitigates the overall weight of hydraulic pump；Cylinder barrel uses internal recessing structure, improves the air-tightness of cylinder barrel, protects
The patency that piston moves in cylinder has been demonstrate,proved, while largely having simplified the structure of cylinder barrel.
Compared to existing air-driven hydraulic pump, characteristic is exactly pressure maintaining performance possessed by high pressurize air-driven hydraulic pump of the invention
It is good, by the way that the rationalization of hydraulic pump babinet is divided into three sections, cylinder portion is put with pump valve part by height, the difference of structure difference
It sets, simplifies installation procedure, while improving cabinet space utilization rate, reduce box volume, also risen for improving pressure maintaining performance
Key effect is arrived；Oil sucting one-way valve in oil absorption system is provided separately within body base, solves since oil sucting one-way valve loses
The problem of effect causes entire pump valve part to be replaced, and only need to simply replace oil sucting one-way valve；Pressurize steel ball passes through oil discharge passage
It is connected to oil sucting one-way valve, after hydraulic oil output, the pressurize steel ball high using hardness, diameter is big effectively prevents oil pressure
It reduces, improves the pressure maintaining performance of hydraulic pump；Using the design of liquid level peep hole, hydraulic pump internal hydraulic pressure oil can be observed at any time
Oil mass situation increases and decreases oil mass in time, while also whether observable oil is pure.Rationalization using body structure and corresponding component
Improvement, high pressurize air-driven hydraulic pump of the invention can convert the compressed air of minimum to maximized hydraulic pressure output pressure
Power, through client using proof, admission pressure requirement can be down to 0.6Mpa, and output pressure is up to 70MPa or more；In addition, product
Using full-aluminum alloy, oil circuit cleaning is attractive and durable, and light is easy to carry about with one.
Description of the drawings
Fig. 1 is the structure sectional view of the high pressurize air-driven hydraulic pump of the present invention；
Fig. 2 is the front view of the high pressurize air-driven hydraulic pump of the present invention；
Fig. 3 is the vertical view of the high pressurize air-driven hydraulic pump of the present invention；
Fig. 4 is the babinet front view of the high pressurize air-driven hydraulic pump of the present invention；
Fig. 5 is the babinet vertical view of the high pressurize air-driven hydraulic pump of the present invention.
In Fig. 1-5：1- hexagon socket head cap screws；2- spring clip；3- foot pedals；4- silencers；5- air inlet valve blocks；6- valve rods；
7- compression springs；8- air inlets；9- Box Covers；10- gas pistons；11- babinets；12- liquid level peep holes；13- piston systems；14- cylinders
Cylinder；15- resetting springs；16- spools；17- oil pressure valve blocks；18- oil sucting one-way valves；19- oil discharge passages；20- pressurize steel balls；21-
Lateral oil circuit hole；The stifled oily steel balls of 22-；23- fuel outlet valves；24- drains the oil bar；25- rubber pads；26- hydraulic seats；27- oil inlet and outlets；
28- bolts；29- bolt columns；30- ladder walls；31- bolts hole.
Specific implementation mode
Present invention is further described in detail with embodiment below in conjunction with the accompanying drawings：A kind of high guarantor as shown in Fig. 1 ~ 5
Air-driven hydraulic pump, including babinet 11, Box Cover 9, hydraulic seat 26 and foot pedal 3 is pressed to form, the babinet 11 is sealed with Box Cover 9
Connection is included in the opening of all Box Covers 9 junction and is both provided with sealing ring, the inner surface edge that Box Cover 9 is contacted with babinet 11
Embedding sealing rubber pad 25；The babinet 11 is set as three sections, is separated by two sections of ladder walls 30 of box house, the ladder
Wall 30 is U-shaped structure, and babinet 11 is internally provided with bolt column 29, and 29 quantity of the bolt column is 6, and top is provided with bolt hole
31, Box Cover 9 is fixed on babinet 11 by bolt 28, the babinet 11 is provided with liquid level peep hole 12, liquid level peep hole
12 are located at the 3/5 of babinet total height；The hydraulic seat 26 is arranged on Box Cover 9, and spring clip is provided on hydraulic seat 26
2, the spring clip 2 is fixed on by hexagon socket head cap screw 1 on hydraulic seat；It is provided with silencer 4 on the hydraulic seat 26, eliminates the noise
Device 4 is communicated in hydraulic pump vibration sounding position；The foot pedal 3 is located at air-driven hydraulic pump topmost, and material is aluminium alloy；It is described
Box Cover 9 is provided with air inlet valve block 5 above, and the air inlet valve block 5 includes air inlet 8, compression spring 7 and valve rod 6；In the babinet 11
Portion is made of cylinder portion and pump valve part, and the cylinder portion includes cylinder barrel 14, piston system 13, spool 16 and resets bullet
Spring 15 is provided with symmetrical grooves inside the cylinder barrel 14, and the piston system 13 is provided with independent gas piston 10, the piston system
System 13 is integrally located in the cylinder barrel 14, and the resetting spring 15 is sleeved on the spool 16；The pump valve part includes oil
Pressure valve block 17, oil absorption system and defuelling system composition, the oil pressure valve block 17 uses high-strength aluminum alloy material, through extrusion forming
Technique is prepared, and the oil pressure valve block 17 connects oil absorption system and defuelling system, the oil absorption system and defuelling system pass through
Lateral oil circuit hole 21 connects, and 21 right side of lateral oil circuit hole is closed with stifled oily steel ball 22；The oil absorption system includes oil sucting one-way valve
18 and pressurize steel ball 20,20 a diameter of 12mm of the pressurize steel ball, 18 bottom of the oil sucting one-way valve is immersed in hydraulic oil, adopts
With being detachably connected and fixed in 17 bottom of oil pressure valve block, and it is connected to pressurize steel ball 20 by oil discharge passage 19；It is described to put
Oil system includes fuel outlet valve 23 and bar 24 of draining the oil, and 24 top of bar of draining the oil is contacted with the gearing of foot pedal 3, cooperation air inlet valve block
Valve rod 6 completes the feed flow of air-driven hydraulic pump and returns liquid work.
In the present embodiment, further, a diameter of 14mm of the pressurize steel ball 20.
In the present embodiment, further, the silencer 4 is mounted on hydraulic seat 2, and is connected to pump valve portion by connecting rod
Valve block in point, since the shock of reciprocating motion of the pistons sends out loud noise, silencer is directly connected to noise and sends out position valve block,
The good effect except flat of making an uproar can be played.
In the present embodiment, further, the spring clip 2 is connected with the support of foot pedal 3, and spring clip 2 is in foot pedal 3
When off-load, foot pedal 3 can be lockked, automatic deloading is realized, reduces handling time.
The high pressurize air-driven hydraulic pump operation principle of the present invention：When gently trampling sole 3, through gs-oil separator（Reduce gas
Body moisture content）Compressed gas be passed through air inlet valve block 5 from air inlet 8, by the downward effect compression press spring 7 of valve rod 6, open into
Sealing ring junction in air valve block 5 so that gas can smoothly enter into piston system 13, and gas piston 10 is pushed to travel forward, when
When piston system 13 moves to the symmetrical grooves of cylinder barrel 14,13 end pressure of piston system reduces rapidly, until with pump valve side pressure
Power is identical, and at this time under the action of resetting spring 15, piston system 13 moves rapidly backward, and the gas meeting entered at this time
High pressure is formed in piston end, pushes piston system 13 to travel forward, so moves in circles, the air of pump valve part is constantly pressed
Contracting, oil pressure increase, and form vacuum so that oil sucting one-way valve 18 is opened, and hydraulic oil is up inhaled through oil discharge passage 19 in babinet, is drawn to
Oil inlet and outlet 27, then enters hydraulic cylinder by oil pipe, completes the lift of hydraulic cylinder；When foot pedal 3 is floored, spring clip 2
Foot pedal 3 is lockked, foot pedal 3 presses bar 24 of draining the oil so that fuel outlet valve 23 is opened, and hydraulic oil is put by 21 flow direction of lateral oil circuit hole
Fuel tap 23 is finally back to babinet 11, and that completes hydraulic pump returns liquid unloading process.
Obviously, in practice it has proved that, for air-driven hydraulic pump other than making hydraulic cylinder lift and backhaul, more production applications are complete
After lift, stops feed flow and carry out pressurize, to complete the work such as corresponding machine maintenance or production task.Therefore, work as completion
After the lift of predetermined distance, foot pedal 3 is unclamped, in order to make hydraulic cylinder not backhaul, need to continue to keep output pressure constant, need at this time
It wants air-driven hydraulic pump that there is good pressure maintaining performance, by the way that pressurize steel ball 20 is arranged, increases pressurize steel ball size to 8 ~ 15mm（It passes
Blanket insurance pressing steel balls only have 6 ~ 9mm）, it effectively prevents hydraulic oil and flows back downwards, 21 right side of lateral oil circuit hole, 22 envelope of stifled oily steel ball
It closes, hydraulic oil is also blocked in the closing of fuel outlet valve 23 in left side, to play good pressure holding effect.
Core of the invention component air inlet valve block 5 and oil pressure valve block 17 are all made of high-strength aluminum alloy material, instead of tradition
Stainless steel or common aluminum alloy material, using high temperature and pressure extruding-out process replace aluminium moldings formed therefrom technique, greatly
The quality for improving air-driven hydraulic pump, extends service life；Meanwhile oil pressure valve block 17 has also been made in structure and accordingly changes
Into oil absorption system and defuelling system independent mutually can be arranged in oil pressure valve block, be replaced convenient for single；Babinet 11 is using complete
Aluminum alloy material, while being segmented provided with ladder according to installation component structural, cabinet space utilization rate is effectively increased, is improved
Hydraulic pump pressure maintaining performance, also correspondingly reduces production cost.
The present invention can be summarized with others without prejudice to the concrete form of the spirit or central characteristics of the present invention.Therefore, nothing
By from the point of view of which point, the embodiment above of the invention can only be considered the description of the invention and cannot limit the present invention,
With the comparable meaning and scope of claims of the present invention in any variation, be all considered as being included in claims
In the range of.
Claims (10)
1. a kind of high pressurize air-driven hydraulic pump, including babinet（11）, Box Cover（9）, hydraulic seat（26）And foot pedal（3）Composition,
It is characterized in that：The babinet（11）With Box Cover（9）It is tightly connected, is included in all Box Covers（9）Opening junction is all provided with
It is equipped with sealing ring, Box Cover（9）With babinet（11）The inner surface of contact inlays sealing rubber pad（25）；The babinet（11）Setting
It is three sections, passes through two sections of ladder walls of box house（30）It is separated, babinet（11）It is internally provided with bolt column（29）, bolt column
（29）Top is provided with bolt hole（31）, pass through bolt（28）By Box Cover（9）It is fixed on babinet（11）On；The hydraulic seat（26）
It is arranged in Box Cover（9）On, hydraulic seat（26）On be provided with spring clip（2）；The foot pedal（3）Most positioned at air-driven hydraulic pump
Above；The Box Cover（9）It is provided with air inlet valve block above（5）, the air inlet valve block（5）Including air inlet（8）, compression spring（7）
And valve rod（6）；The babinet（11）Inside is made of cylinder portion and pump valve part, and the cylinder portion includes cylinder barrel
（14）, piston system（13）, spool（16）And resetting spring（15）, the piston system（13）It is provided with independent gas piston
（10）, the piston system（13）It is integrally located at the cylinder barrel（14）It is interior, the resetting spring（15）It is sleeved on the spool
（16）On；The pump valve part includes oil pressure valve block（17）, oil absorption system and defuelling system composition, the oil pressure valve block（17）Even
Oil absorption system and defuelling system are connect, the oil absorption system and defuelling system pass through lateral oil circuit hole（21）Connection, lateral oil circuit hole
（21）The stifled oily steel ball in right side（22）Closing；The oil absorption system includes oil sucting one-way valve（18）With pressurize steel ball（20）, described
Oil sucting one-way valve（18）Bottom is immersed in hydraulic oil, using being detachably connected and fixed in the oil pressure valve block（17）Bottom, and
Pass through oil discharge passage（19）With pressurize steel ball（20）Connection；The defuelling system includes fuel outlet valve（23）With bar of draining the oil（24）, institute
State bar of draining the oil（24）Top and foot pedal（3）Contact is interlocked, the valve rod of air inlet valve block is coordinated（6）, complete the confession of air-driven hydraulic pump
Liquid and time liquid work.
2. high pressurize air-driven hydraulic pump according to claim 1, which is characterized in that the ladder wall of the babinet（30）For U
Type structure.
3. high pressurize air-driven hydraulic pump according to claim 1, which is characterized in that the bolt column of the babinet（29）Quantity
It is 4 ~ 12.
4. high pressurize air-driven hydraulic pump according to claim 1, which is characterized in that the babinet（11）It is provided with liquid level sight
Examine hole（12）, liquid level peep hole（12）At the 1/3 ~ 2/3 of babinet total height.
5. high pressurize air-driven hydraulic pump according to claim 1, which is characterized in that the hydraulic seat（26）On be provided with and disappear
Sound device（4）, silencer（4）It is communicated in hydraulic pump vibration sounding position.
6. high pressurize air-driven hydraulic pump according to claim 1, which is characterized in that the spring clip on the hydraulic seat
（2）Pass through hexagon socket head cap screw（1）It is fixed on hydraulic seat（26）On.
7. high pressurize air-driven hydraulic pump according to claim 1, which is characterized in that the cylinder barrel（14）Inside is provided with pair
Claim groove.
8. high pressurize air-driven hydraulic pump according to claim 1, which is characterized in that the pressurize steel ball（20）A diameter of 8 ~
15mm。
9. high pressurize air-driven hydraulic pump according to claim 1, which is characterized in that the oil pressure valve block（17）Using high-strength
Aluminum alloy material is spent, is prepared through extrusion forming process.
10. high pressurize air-driven hydraulic pump according to claim 1, which is characterized in that the foot pedal（3）And babinet（11）
For aluminum alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810248978.8A CN108317077A (en) | 2018-03-25 | 2018-03-25 | A kind of high pressurize air-driven hydraulic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810248978.8A CN108317077A (en) | 2018-03-25 | 2018-03-25 | A kind of high pressurize air-driven hydraulic pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108317077A true CN108317077A (en) | 2018-07-24 |
Family
ID=62899167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810248978.8A Pending CN108317077A (en) | 2018-03-25 | 2018-03-25 | A kind of high pressurize air-driven hydraulic pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108317077A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109162885A (en) * | 2018-10-30 | 2019-01-08 | 大连元利流体技术有限公司 | Booster pump without external reversing mechanism |
-
2018
- 2018-03-25 CN CN201810248978.8A patent/CN108317077A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109162885A (en) * | 2018-10-30 | 2019-01-08 | 大连元利流体技术有限公司 | Booster pump without external reversing mechanism |
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Legal Events
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180724 |
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| WD01 | Invention patent application deemed withdrawn after publication |