CN2577094Y - Pneumatic self-suction type high-pressure oil ejector - Google Patents
Pneumatic self-suction type high-pressure oil ejector Download PDFInfo
- Publication number
- CN2577094Y CN2577094Y CN 02280584 CN02280584U CN2577094Y CN 2577094 Y CN2577094 Y CN 2577094Y CN 02280584 CN02280584 CN 02280584 CN 02280584 U CN02280584 U CN 02280584U CN 2577094 Y CN2577094 Y CN 2577094Y
- Authority
- CN
- China
- Prior art keywords
- valve body
- cylinder block
- pressure oil
- piston
- moving bar
- 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.)
- Expired - Lifetime
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 63
- 239000002828 fuel tank Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 239000004519 grease Substances 0.000 abstract description 11
- 238000002347 injection Methods 0.000 abstract description 6
- 239000007924 injection Substances 0.000 abstract description 6
- 230000009471 action Effects 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 230000001050 lubricating effect Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 206010022000 influenza Diseases 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 206010044565 Tremor Diseases 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Images
Landscapes
- Mechanically-Actuated Valves (AREA)
Abstract
The utility model relates to an oiling device, specifically speaking are pneumatic from inhaling formula high pressure grease squirt. The oil injection device comprises an oil storage mechanism and an oil injection mechanism, wherein the oil storage mechanism consists of an oil storage cylinder and a large piston, the oil injection mechanism consists of a plunger and a check valve, and a space is reserved between one end of the plunger and the check valve; the device also comprises an air power mechanism and an action program control mechanism; the air power mechanism is connected with a compressed air source through a compressed air interface and is connected with a plunger in the oil injection mechanism through a moving rod; the action program control mechanism is arranged in the middle of the valve body and on the moving rod in the air power mechanism; the oil storage mechanism is connected with a valve body in the air power mechanism through an oil storage cylinder. The filling device can be suitable for working environments with large filling amount and short filling time requirements at multiple use points; in addition, the structure is simple, the cost is low, the energy is saved, the use is safe and reliable, the application range is wide, and the significance of environmental protection is realized.
Description
Technical field
The utility model relates to oiling device, specifically a kind of Pneumatic self sucking high-pressure oil ejector.
Background technique
In the prior art, mutual moving element, the particularly high-speed rotary part of machinery will be used grease lubrication, to reduce friction.Usually the oil gun that has this maintenance function mostly is manually, and oil pump capacity is little, and the filling time is long, and fuel tank capacity going along with is little.Be not suitable for and use a little more, adding amount is big, requires short working environment of filling time.
External similar filling pump product adopts lifting and pulling type oiling mode, and its structure is that Oil container and main frame are one, and have connecting tube, nylon piston, four foot valve doors, material extraction rod, carry a whole set of assembly of flitch or the like, complex structure, amount of maintenance is big; Its principle is: guarantee pouring orifice pressure by the stretching device frequency of okperation, pressurized air has fluctuation slightly, all directly influences the pouring orifice pressure values, makes pouring orifice pressure shakiness.In addition, the pressurized air that external like product fuel tank domestic demand applies certain pressure promotes lubricating grease by force and enters plunger cavity, for oiling is prepared.The safety assurance that its need of work is absolute.
The model utility content
In order to overcome above-mentioned deficiency, the purpose of this utility model provides a kind of Pneumatic self sucking high-pressure oil ejector, and it can be applicable to use the working environment that some adding amounts are big, require filling time weak point more, and is simple in structure, safe in utilization.
The technical solution of the utility model is as follows: comprise store oil mechanism and oiling mechanism, wherein store oil mechanism is made up of fuel tank and big piston, and oiling mechanism is made up of plunger and check valve, leaves the space between an end of plunger and the check valve; It is characterized in that: also comprise aerodynamic force mechanism, operation program control mechanism, be installed in the casing; Described aerodynamic force mechanism links to each other with source of compressed air by the pressurized gas interface, and links to each other with plunger in the oiling mechanism by moving bar; The operation program control mechanism is installed in and reaches on the moving bar in the aerodynamic force mechanism in the middle part of the valve body; Store oil mechanism is connected with valve body in the aerodynamic force mechanism by fuel tank;
Described aerodynamic force mechanism main body is made of cylinder block, piston, valve body and moving bar, and an end of valve body links to each other with cylinder block, and the other end is connected with check valve in the oiling mechanism, and the pressurized gas interface is established at the middle part; Piston in the cylinder block links to each other with moving bar one end, and leaves cavity between the cylinder block, the other end that moves bar be arranged in plunger axis valve body, oiling mechanism and link to each other, the middle part closely cooperates by sealing nut and valve body; Described operation program control mechanism is made up of dial sleeve, limiting board, distributing valve seat, distribution slide block, the sliding lobe of commutation, flap slide, embedding spring, slide cover, and wherein: dial sleeve is set in moving bar outer wall; Distributing valve seat is installed on the valve body by limiting board, is positioned at the limiting board inboard, and distribution slide block one side is a boss, opposite side is a groove structure, install movingly in the spill interval that its boss one side and dial sleeve are provided with, groove one side contacts with distributing valve seat and is connected, and and distributing valve seat between leave cavity; Be installed on the slide cover on the valve body in addition and communicate, in the slide cover, establish cup-shaped flap slide, be embedded with the embedding spring in the flap slide with the valve body inner cavity; The flap slide links to each other with dial sleeve by the sliding lobe of commutation; Also be provided with the boss of band air flue on the cylinder block sidewall, an end and cylinder block communicate with cavity between the piston; Its cylinder block and valve body joint are left the semi-circular shaped compression air passageways that cooperatively interacts and install by seal arrangement respectively, communicate with air flue on the cylinder block sidewall;
Have three passages on the described distributing valve seat, communicate with three passages that valve body is provided with; Described valve body has three paths, is arranged in the joint of operation program control mechanism distributing valve seat, is respectively: the passage that leads to the cavity between valve body and the cylinder block; The passage that links to each other with the cylinder block air flue; To the external passage that communicates with atmosphere; Between described distributing valve seat and valve body, establish the vulcan fibre packing ring; Flap slide bottom is provided with exhaust port; Between slide cover and the valve body, between sealing nut and moving bar, the valve body, and moving bar and piston between, reach between cylinder body and the pressurized gas interface between valve body and the cylinder block and be equipped with seal arrangement; Have a plurality of grooves on the piston.
The utility model adopts and divides body structure, and Oil container and main frame screw, and be simple, practical, replaces the operation of hand-filling grease; During work, adopt the self-priming principle, along with the plunger negative pressure and cavity that is produced by the plunger drawback movement, the self-priming big piston of fuel tank promotes lubricating grease and enters the plunger cavity, for oiling is prepared under the atmospheric pressure effect; The utility model adopts Pneumatic impact oiling mode, and under specified air pressure, piston drives the plunger stable operation, thereby guarantees that pouring orifice pressure is stable.Under the air pressure effect, piston drives the plunger to-and-fro motion, realizes continuous oil supply.
The utility model is compared with domestic, external like product has obvious improvement effect, and concrete advantage is as follows:
1. the utility model adopts sealing fuel tank disposable, self-priming plastic material, charge of oil is quick, quite external artificial filling grease way, the utility model free from admixture is brought in the fuel tank, grease utilization ratio height, swift to operate, plastics are easy in recovery in addition, pollution-free, have environment protection significance again.
2. simple in structure, cheap, outward appearance is clean and tidy.The utility model volume is little, and is in light weight, easily moves.Have save time, laborsaving, full-automatic, self-priming wet goods characteristics, be suitable for pressure injection lubricating grease and machinery oil simultaneously, be widely used.Quite external volume is big, complex structure, the single similar notes grease product of use have obvious improvement.
3. because the utility model adopts self-priming principle, channel theory, promote plastic seal fuel tank inner carrier fuel feeding by barometric pressure.Quite external similar pneumatic filling pump is that pneumatically promotes the oil cylinder piston fuel feeding, has energy saving, safe and reliable characteristics.
4. the utility model adopts the Pneumatic immpacting oil injection structure, quite external pneumatic filling pump lifts pump oil mode, can only rely on the size of air pressure to decide oily pressure values, fuel-displaced unsettled situation is compared, and the utility model can be issued to constant fuel-displaced pressure values at specified air pressure.
5. applied widely.The utility model is applicable to assembling and maintenance oilings such as various types of machinery, automobile, agricultural machinery, mining machinery.
6. fuel tank has interchangeability, and is easy to use, and is convenient to reclaim, pollution-free, environmental.
7. the utility model adopts the some dynamic formula air reversing valve of Control work program, and not only structure is small and exquisite, also has characteristics such as wear-resisting wiping, shock-resistant, good seal.
Description of drawings
Fig. 1 is the utility model structure scheme of installation.
Fig. 2 is the inversion plan view of Fig. 1.
Fig. 3 is the plan view of Fig. 2.
Embodiment
Below in conjunction with drawings and Examples in detail the utility model is described in detail.
As shown in Figure 1, 2, 3, the utility model comprises store oil mechanism and oiling mechanism, and wherein store oil mechanism is made up of fuel tank 4 and big piston 3, and oiling mechanism is made up of plunger 12 and check valve, leaves the space between an end of plunger 12 and the check valve; Also comprise aerodynamic force mechanism, operation program control mechanism, be installed in 7 li of casings; Described aerodynamic force mechanism links to each other with source of compressed air by pressurized gas interface 9, and links to each other with plunger 12 in the oiling mechanism by moving bar 16; The operation program control mechanism is installed in the aerodynamic force mechanism on valve body 8 middle parts and the moving bar 16; Store oil mechanism is screwed by valve body 8 in fuel inlet fitting 31, sealing gasket 30 and the aerodynamic force mechanism by fuel tank 4 and is connected.
The control piston motion of described aerodynamic force mechanism, its main body is made of cylinder block 1, piston 2, valve body 8 and moving bar 16, and an end of valve body 8 screws with cylinder block 1 and links to each other, and check valve screws and is connected in the other end and the oiling mechanism, and pressurized gas interface 9 is established at the middle part; Piston 2 in the cylinder block 1 links to each other with moving bar 16 1 ends, and leave cavity between the cylinder block 1, the other end of moving bar 16 by elastic cylindrical pin 23 be arranged in plunger axis 12 valve body 8, oiling mechanism and link to each other, the middle part closely cooperates by sealing nut 17 and valve body 8.
Described operation program control mechanism is made up of dial sleeve 18, limiting board 19, distributing valve seat 21, distribution slide block 22, the sliding lobe 26 of commutation, flap slide 27, embedding spring 28, slide cover 29, and wherein: dial sleeve 18 is set in moving bar 16 outer walls; Distributing valve seat 21 is installed on the valve body 8 by limiting board 19, be positioned at limiting board 19 inboards, between distributing valve seat 21 and valve body 8, establish vulcan fibre packing ring 20, distribution slide block 22 1 sides are boss, opposite side is a groove structure, install movingly in the spill interval that its boss one side and dial sleeve 18 are provided with, groove one side contacts with distributing valve seat 21 and is connected, and and distributing valve seat 21 between leave cavity; Be installed on slide cover 29 on the valve body 8 in addition and communicate, establish cup-shaped flap slide 27 for 29 li, have in the flap slide 27 of exhaust port and be embedded with embedding spring 28 at the slide cover with valve body 8 inner cavities; Flap slide 27 links to each other with dial sleeve 18 by the sliding lobe 26 of commutation; Between slide cover 29 and valve body 8, be provided with sealing gasket 30.
Described check valve is made up of check valve case 13, steel ball 24, check spring 25, wherein: have oil duct in the middle of the check valve case 13, one end screws by an end of seal arrangement and valve body 8, steel ball 24, check spring 25 place check valve case 13, steel ball 24 communicates with its inner cavity by valve body 8 end neck formula oil duct junctions by valve body 8 one ends.
Also be provided with the boss of band air flue on cylinder block 1 sidewall, an end and cylinder block 1 communicate with cavity between the piston 2; Its cylinder block 1 leaves the semi-circular shaped compression air passageways that cooperatively interacts and install by seal arrangement respectively with valve body 8 joints, communicates with air flue on cylinder block 1 sidewall.
Have three passages on the described distributing valve seat 21, communicate with three passages that valve body 8 is provided with; Three paths that described valve body 8 has are arranged in the joint of operation program control mechanism distributing valve seat 21, are respectively: the passage that leads to the cavity between valve body 8 and the cylinder block 1; The passage that links to each other with cylinder block 1 air flue; To the external passage that communicates with atmosphere.
In addition, valve body 8 is installed on the support 6; Between sealing nut 17 and moving bar 16, valve body 8, be equipped with O-ring seals 5 between moving bar 16 and the piston 2, between valve body 8 and the cylinder block 1, between cylinder body 1 and the pressurized gas interface 9, check valve case 13 and valve body 8 be equipped with sealing gasket 30; Cylinder block 1 leaves semi-circular grooves with valve body 8 joints, cooperates to install through seal arrangement to form circular channel; For weight reduction, have a plurality of grooves on the piston 2.
The utility model working procedure:
Pressurized air enters piston 2 bottom air chambers by air interface 9 through air reversing valve, valve body 8 air flues, promotes the moving bar 16 of piston 2 drives, plunger axis 12 and dial sleeve 18 and moves upward.When moving upward, plunger axis 12 sucks lubricating grease, for oiling is prepared.The dial sleeve 18 that tappet 16 moves upward promotes commutation flap 26, flick distribution slide block 22, piston 2 bottom air chambers are communicated with atmosphere, simultaneously compressed gas interface 9 is connected pressurized air and is entered piston 2 top air chambers through the air flue of valve body 8 and cylinder block 1, promote piston 2, drive moving bar 16, plunger axis 12 and dial sleeve 18 and move downward.Plunger axis 12 promotes lubricating grease, and the steel ball of washing open by spring 25 compressings 24 enters check valve case 13, realizes fuel feeding.Drive dial sleeve 18 during moving bar 16 moves downward, promote commutation flap 26, it is downward to flick distribution slide block 22, open top, piston top air chamber is communicated with atmosphere, and compressed gas interface 9 enters piston bottom air chamber with pressurized air through valve body 8 air flues simultaneously, finishes the one action circulation.
Claims (10)
1. Pneumatic self sucking high-pressure oil ejector, comprise store oil mechanism and oiling mechanism, wherein store oil mechanism is made up of fuel tank (4) and big piston (3), and oiling mechanism is made up of plunger (12) and check valve, leaves the space between an end of plunger (12) and the check valve; It is characterized in that: also comprise aerodynamic force mechanism, operation program control mechanism, be installed in casing (7) lining; Described aerodynamic force mechanism links to each other with source of compressed air by pressurized gas interface (9), and links to each other with plunger (12) in the oiling mechanism by moving bar (16); The operation program control mechanism is installed on valve body in the aerodynamic force mechanism (8) middle part and the moving bar (16); Store oil mechanism is connected with valve body (8) in the aerodynamic force mechanism by fuel tank (4).
2. by the described Pneumatic self sucking high-pressure oil ejector of claim 1, it is characterized in that: described aerodynamic force mechanism main body is made of cylinder block (1), piston (2), valve body (8) and moving bar (16), one end of valve body (8) links to each other with cylinder block (1), the other end is connected with check valve in the oiling mechanism, and pressurized gas interface (9) is established at the middle part; Piston (2) in the cylinder block (1) links to each other with moving bar (16) one ends, and cylinder block leaves cavity between (1), the other end of moving bar (16) be arranged in plunger axis valve body (8), oiling mechanism (12) and link to each other, the middle part closely cooperates by sealing nut (17) and valve body (8).
3. by the described Pneumatic self sucking high-pressure oil ejector of claim 2, it is characterized in that: described piston has a plurality of grooves on (2).
4. by the described Pneumatic self sucking high-pressure oil ejector of claim 2, it is characterized in that: also be provided with the boss of band air flue on described cylinder block (1) sidewall, an end and cylinder block (1) communicate with cavity between the piston (2); Its cylinder block (1) leaves the semi-circular shaped compression air passageways that cooperatively interacts and install by seal arrangement respectively with valve body (8) joint, communicates with air flue on cylinder block (1) sidewall.
5. by the described Pneumatic self sucking high-pressure oil ejector of claim 1, it is characterized in that: described operation program control mechanism is made up of dial sleeve (18), limiting board (19), distributing valve seat (21), distribution slide block (22), the sliding lobe (26) of commutation, flap slide (27), embedding spring (28), slide cover (29), and wherein: dial sleeve (18) is set in moving bar (16) outer wall; Distributing valve seat (21) is installed on the valve body (8) by limiting board (19), be positioned at limiting board (19) inboard, distribution slide block (22) one sides are boss, opposite side is a groove structure, install movingly in the spill interval that its boss one side and dial sleeve (18) are provided with, the contact of groove one side and distributing valve seat (21) is connected, and and distributing valve seat (21) between leave cavity; Be installed on slide cover (29) on the valve body (8) in addition and communicate, establish cup-shaped flap slide (27), be embedded with in the flap slide (27) and embed spring (28) in slide cover (29) lining with valve body (8) inner cavity; Flap slide (27) links to each other with dial sleeve (18) by the sliding lobe of commutation (26).
6. by the described Pneumatic self sucking high-pressure oil ejector of claim 5, it is characterized in that: have three passages on the described distributing valve seat (21), communicate with three passages that valve body (8) is provided with.
7. by the described Pneumatic self sucking high-pressure oil ejector of claim 6, it is characterized in that: described valve body (8) has three paths, be arranged in the joint of operation program control mechanism distributing valve seat (21), be respectively: the passage that leads to the cavity between valve body (8) and the cylinder block (1); The passage that links to each other with cylinder block (1) air flue; To the external passage that communicates with atmosphere.
8. by the described Pneumatic self sucking high-pressure oil ejector of claim 5, it is characterized in that: between described distributing valve seat (21) and valve body (8), establish vulcan fibre packing ring (20).
9. by the described Pneumatic self sucking high-pressure oil ejector of claim 5, it is characterized in that: flap slide (27) bottom is provided with exhaust port.
10. by the described Pneumatic self sucking high-pressure oil ejector of one of claim 1～8, it is characterized in that: between described slide cover (29) and the valve body (8), between sealing nut (17) and moving bar (16), the valve body (8), and moving bar (16) and piston (2) between, reach between cylinder body (1) and the pressurized gas interface (9) between valve body (8) and the cylinder block (1) and be equipped with seal arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02280584 CN2577094Y (en) | 2002-10-18 | 2002-10-18 | Pneumatic self-suction type high-pressure oil ejector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02280584 CN2577094Y (en) | 2002-10-18 | 2002-10-18 | Pneumatic self-suction type high-pressure oil ejector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2577094Y true CN2577094Y (en) | 2003-10-01 |
Family
ID=33743276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02280584 Expired - Lifetime CN2577094Y (en) | 2002-10-18 | 2002-10-18 | Pneumatic self-suction type high-pressure oil ejector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2577094Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100412437C (en) * | 2002-10-18 | 2008-08-20 | 程虎 | Pneumatic self-suction type high-pressure oil ejector |
| CN102635772A (en) * | 2012-03-23 | 2012-08-15 | 阳江市飞轮金属制品有限公司 | Bead path oil filling system of plane bearing |
| CN104500954A (en) * | 2014-12-22 | 2015-04-08 | 浙江瑞丰五福气动工具有限公司 | Pneumatic high-pressure grease filling machine |
| CN104514972A (en) * | 2014-12-22 | 2015-04-15 | 浙江瑞丰五福气动工具有限公司 | Double-barrel cylinder air supply device for butter making machine |
-
2002
- 2002-10-18 CN CN 02280584 patent/CN2577094Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100412437C (en) * | 2002-10-18 | 2008-08-20 | 程虎 | Pneumatic self-suction type high-pressure oil ejector |
| CN102635772A (en) * | 2012-03-23 | 2012-08-15 | 阳江市飞轮金属制品有限公司 | Bead path oil filling system of plane bearing |
| CN104500954A (en) * | 2014-12-22 | 2015-04-08 | 浙江瑞丰五福气动工具有限公司 | Pneumatic high-pressure grease filling machine |
| CN104514972A (en) * | 2014-12-22 | 2015-04-15 | 浙江瑞丰五福气动工具有限公司 | Double-barrel cylinder air supply device for butter making machine |
| CN104514972B (en) * | 2014-12-22 | 2017-05-17 | 浙江瑞丰五福气动工具有限公司 | Double-barrel cylinder air supply device for butter making machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102678507B (en) | Double-acting hydraulic ejecting type vacuumizing and compressing device of double cylinders | |
| CN202732269U (en) | Vacuumizing and compressing device of double-acting hydraulic injection type single air cylinder | |
| CN2577094Y (en) | Pneumatic self-suction type high-pressure oil ejector | |
| CN113217336A (en) | Pump-free lubricating and sealing system and method for reciprocating compressor | |
| CN201560910U (en) | Non-oil lubrication piston reciprocating type air compressor | |
| CN100412437C (en) | Pneumatic self-suction type high-pressure oil ejector | |
| CN201162741Y (en) | Two-stage gas cylinder | |
| CN209483568U (en) | A kind of gas-liquid booster pump | |
| CN2326747Y (en) | Synchronous reciprocating gas/liquid pump for steam engine | |
| CN207827749U (en) | A kind of hydraulic jack of fast lifting | |
| CN215979773U (en) | Two-way piston water-cooling high-pressure air pump | |
| CN206206980U (en) | Pneumatic lubrication gasoline pump | |
| CN102094785B (en) | Miniature piston air pump without oil lubrication | |
| CN209325378U (en) | A kind of lubricating arrangement for multiple types machinery | |
| CN2366617Y (en) | Oil sealing type gate valve | |
| CN2339785Y (en) | High-pressure oil-filling pump | |
| CN2196723Y (en) | Drift lubricating device for pressure die casting machine | |
| CN2146581Y (en) | Piston-type compressor | |
| CN2144237Y (en) | Pneumatic grease pump | |
| CN221144715U (en) | High-pressure air pump pre-compaction lubricating system | |
| CN216975159U (en) | Pump-free lubricating and sealing system of reciprocating compressor | |
| CN1200203C (en) | Booster starting device of hydraulic free-piston engine | |
| CN219176544U (en) | Pneumatic hydraulic pump | |
| CN2109465U (en) | Power saving device for car air compressor | |
| CN221170801U (en) | Novel valve core structure of slurry plunger pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080820 |
|
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080820 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |