CN209398477U - A kind of centrifugal oil-air separator and its engine used - Google Patents
A kind of centrifugal oil-air separator and its engine used Download PDFInfo
- Publication number
- CN209398477U CN209398477U CN201822266440.8U CN201822266440U CN209398477U CN 209398477 U CN209398477 U CN 209398477U CN 201822266440 U CN201822266440 U CN 201822266440U CN 209398477 U CN209398477 U CN 209398477U
- Authority
- CN
- China
- Prior art keywords
- oil
- groove
- air separator
- casing
- internal diameter
- 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.)
- Withdrawn - After Issue
Links
- 238000005192 partition Methods 0.000 claims abstract description 31
- 239000007789 gas Substances 0.000 claims description 10
- 238000009434 installation Methods 0.000 abstract description 4
- 230000003139 buffering effect Effects 0.000 abstract description 3
- 230000006837 decompression Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000000926 separation method Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 238000005119 centrifugation Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000012856 packing Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model discloses a kind of centrifugal oil-air separators, it includes shell, cavity partition, shaft and drive disk, the cavity partition and shell are separated out disengagement chamber, and cavity partition is equipped with casing, the shaft lower end is connect after passing through casing with drive disk, the clearance seal of step is equipped between the upper end of the drive disk and the lower end of casing, the beneficial effects of the utility model are: directlying adopt the clearance seal of step, then relatively original labyrinth seal and original fan add the combination of horizontal clearance seal, reduce components, it is easy to produce, and installation is also easier, save preparation cost；And since the path of entire clearance seal is longer, it is the structure of step again, the process for driving indoor oil to need to climb by two when entering back into gap, and can play the role of having a decompression and buffering to the oil of entrance at horizontal step surface, drive indoor oil to be also not easily accessible in disengagement chamber.
Description
Technical field
The utility model relates to Oil-gas Separation technical fields, and in particular to one kind is for vehicle motor crankcase oil gas point
From centrifugal oil-air separator and its engine that uses.
Background technique
Currently, there are two types of the sealing structures of centrifugal oil-air separator.A kind of such as prior art Publication No.
CN101189414A, it is entitled to be used to " be used for right disclosed in the device of purification gas while being evacuated crank box
The device (10) of purification gas while crank box is evacuated, described device (10) include: shell (12), are internally provided with point
From room (14), the rotor structure of armature spindle (32) and centrifugal rotor (39) is had, armature spindle (32) is rotatably installed in institute
It states in shell, centrifugal rotor (39) is located in separation chamber (14), and-fluid drive apparatus (64), is used to flow by driving
Body drives armature spindle (32), and the driving device (64) is arranged on the drive separated by case partition (16) with separation chamber (14)
In dynamic room (60), the armature spindle (32) extends through the through hole in case partition (16), which is characterized in that labyrinth packing
(70) it is arranged in the region of through hole, drive chamber (60) and separation chamber (14) is sealed, case partition (16) includes axis
It covers (36), bearing (36) is especially ball bearing and is accommodated in axle sleeve to support armature spindle (32), and axle sleeve (36) is integrally formed
In case partition (16), the axle sleeve has pipe sleeve (36), and the pipe sleeve projects to drive chamber (60).The labyrinth seal tool
Have seal washer (70), the seal washer (70) has circular axial notch (76), and the free end of the pipe sleeve (36) is excellent
Choosing is contactlessly engaged with axial notch (76)."；Due to using labyrinth packing, needing seal washer, and seal washer
The case where must be fixedly arranged on armature spindle or driving wheel, and seal washer is relatively thin, being easy to appear deformation；And the free end of pipe sleeve
End face and inside and outside wall and axial notch must assure that certain interval, gap then cannot achieve greatly very much sealing, gap too it is small then
Machining accuracy is higher and installation accuracy is higher, therefore cumbersome in the presence of installing, and machining accuracy is higher and stability in use is poor
Problem.
It is another such as Publication No. CN 207795338U, " one disclosed in a kind of entitled gs-oil separator sealing structure
Kind of gs-oil separator sealing structure, it includes cavity partition (1), shaft (2) and drive disk (3), on the cavity partition (1)
Equipped with casing (4), shaft (2) lower end passes through casing (4) and connect afterwards with drive disk (3), it is characterised in that: the drive disk
(3) outer diameter is greater than the outer diameter of casing (4), and the spacing between described sleeve pipe (4) lower end surface and drive disk (3) upper surface is 0.1
The upper surface of~2mm, the drive disk (3) are equipped with multiple blades (5), and multiple blades (5) are evenly distributed.The drive disk
(3) lower section is equipped with bearing (7), and shaft (2) lower end connect with bearing (7), described sleeve pipe (4) it is interior equipped with fan (8) or
The demarcation plate (9) of annular；The fan (8) connect with shaft (2), and shaft (2) drives fan (8) rotation；The demarcation plate (9)
It is connect with shaft (2) or with casing (4).", but since when capacity is greater than 500CC, the oil of lower section drive chamber is still
It can enter in separation chamber, smaller scope of application, and components are also more, production cost is preferable, installs also cumbersome.
Utility model content
That the purpose of the utility model is to provide a kind of components is relatively fewer, installation it is easier and lower production costs from
Core type gs-oil separator, it includes shell, cavity partition, shaft and drive disk, and the cavity partition is separated out with shell to be separated
Chamber, and cavity partition be equipped with casing, the shaft lower end pass through casing after connect with drive disk, the upper end of the drive disk and
The clearance seal of step is equipped between the lower end of casing.
Another purpose of the utility model is to provide a kind of engine, it include described in any of the above-described claim from
Core type gs-oil separator, centrifugal oil-air separator is for purifying crank case gases.
The advantageous effects of the utility model:
Due to directlying adopt the clearance seal of step, then relatively original labyrinth seal and original fan add level
Clearance seal combination, reduce components, it is easy to produce, and install it is also easier, save preparation cost；And due to whole
The path of a clearance seal is longer, and is the structure of step, and indoor oil is driven to be needed when entering back into gap by two
The process climbing, and can play the role of having a decompression and buffering to the oil of entrance at horizontal step surface, so that
The size of gap can be suitably larger than the size of original structure interval, drive indoor oil to be also not easily accessible in disengagement chamber, in turn
The machining accuracy and installation accuracy of components can be reduced, so as to which production cost is greatly reduced.
Preferably, the clearance seal includes the protrusion of the annular of drive disk upper end step shape, the lower end of described sleeve pipe
Indent equipped with the step for forming clearance seal with protrusion matching；Then in this way after setting, the more conducively machine-shaping of components,
So as to further decrease production cost.
Preferably, the protrusion includes at least one raised step face, the indent includes matching with raised step face
At least one concave step face；The quantity in raised step face can then be increased according to required capacity, capacity is long-range,
The quantity in raised step face is also more.
As an improvement, the gap between the raised step face and concave step face of the matching is greater than the raised outer wall to match
With the gap between indent inner wall；Then in this way after setting, the gap between the raised step face and concave step face of matching is played
The effect of preferable decompression and buffering, so that indoor oil is driven to be not easily accessible in disengagement chamber, while ensuring that separation
The intracavitary oil separated can be entered smoothly in drive chamber under gravity by clearance seal, and disengagement chamber
Gap of the interior oil when entering in clearance seal between the raised step face of matching and concave step face can play one again
The effect of fixed accumulation, so that indoor oil is driven to be less susceptible to enter in disengagement chamber.
Preferably, the gap between the raised step face and concave step face of the matching is 0.5~2mm, the phase
Gap between the raised outer wall matched and indent inner wall is 0.1~1.5mm.
As an improvement, the upper surface of the protrusion is equipped with the groove of truncated cone-shaped, the axis of groove and the axis of protrusion exist
On same straight line, the internal diameter of the groove upper end is greater than the internal diameter of groove lower end, and the internal diameter of groove upper end is more than or equal to casing
Internal diameter；Then after groove setting, the oil separated in disengagement chamber can gather in groove first, and groove is that setting is being driven
On Moving plate, drive disk is quick rotation at work, so that the oil in groove can be thrown away the bottom surface to indent by centrifugation
On, finally oil is squeezed into the gap of clearance seal, so that indoor oil is driven to be less susceptible to enter in disengagement chamber, sealing effect
Fruit is also just more preferable, and the oil in disengagement chamber but be easily accessible in drive chamber.
As an improvement, the internal diameter of the groove lower end is greater than the outer diameter of shaft；Then in this way after setting, so that out of disengagement chamber
Enter in groove oil disperse in a groove it is more uniform, then centrifugation throw away oil it is also just relatively more uniform, can be further
A possibility that hindering driving indoor oil to enter clearance seal is improved, to improve the effect of counnter attack oil.
As an improvement, the bottom surface of indent is equipped with axial raised oil scraper ring, the internal diameter of the oil scraper ring is equal to casing
Internal diameter, and the outer diameter of oil scraper ring is less than the internal diameter of groove upper end；Then in this way after setting, so that the oil mass in disengagement chamber separation is larger
When situation, the oil separated can not be timely entered in drive chamber and when gathering in gap, and oil scraper ring can effective ground resistance
The oil that gear groove is thrown away returns in disengagement chamber, to reduce a possibility that groove centrifugation is anti-oily, guarantees the oil gas point of disengagement chamber
From efficiency.
As an improvement, the end of the oil scraper ring lower end is located in groove, and the end of oil scraper ring lower end and groove is interior
There are gaps between wall；Then in this way after setting, so that the oil that oil scraper ring can more effectively stop groove to throw away returns to disengagement chamber
It is interior, to further decrease a possibility that groove centrifugation is anti-oily, guarantee the oil-gas separation efficiency of disengagement chamber.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one centrifugal oil-air separator of the utility model embodiment；
Fig. 2 is that one centrifugal oil-air separator of the utility model embodiment removes the structural schematic diagram after lower case；
Fig. 3 is the cross-sectional view of the line A-A along Fig. 2；
Fig. 4 is the enlarged drawing of part B in Fig. 3；
Fig. 5 is the structural schematic diagram of three centrifugal oil-air separator of the utility model embodiment；
Fig. 6 is the structural schematic diagram of four centrifugal oil-air separator of the utility model embodiment；
Fig. 7 is the structural schematic diagram of five centrifugal oil-air separator of the utility model embodiment；
Fig. 8 is the enlarged drawing of C portion in Fig. 7；
Fig. 9 is the structural schematic diagram of six centrifugal oil-air separator of the utility model embodiment；
Detailed description of the invention: 1, shell, 11, upper housing, 12, lower case；2, cavity partition；3, shaft；4, drive disk, 41, convex
It rises, 411, raised step face, 412, groove；5, disengagement chamber；6, casing, 61, indent, 611, concave step face, 612, oil scraper ring.
Specific embodiment
The technical solution of the utility model is described in detail below by specific embodiment, is only that this is practical new
The preferably or preferably embodiment of type, is not intended to limit the protection scope of the utility model.
Embodiment one
As shown in Figs 1-4, a kind of centrifugal oil-air separator, it includes shell 1, cavity partition 2, shaft 3 and drive disk 4
(certainly further including other components, but the inventive point due to being not directed to the invention, therefore details are not described herein), shell 1 divides
For upper housing 11 and lower case 12, cavity partition 2 is fixed at the position between upper housing 11 and lower case 12, cavity partition 2
Disengagement chamber 5, the inner cavity formation drive chamber of cavity partition 2 and lower case 12 are formed with the inner cavity of upper housing 11, and drive disk 4 is located at
In drive chamber, and the center position of cavity partition 2 is equipped with the through-hole of connection disengagement chamber 5 and drive chamber, and casing 6 is fixedly installed
In through-holes, 3 upper end of shaft is rotatably assorted with upper housing 11, and the part that shaft 3 is located in disengagement chamber 5 is equipped with several layers
Folded separation disc, 3 lower end of shaft are fixedly connected after passing through casing 6 with drive disk 4, and clearance seal includes end stand on drive disk 4
The protrusion 41 of stepped annular, the lower end of casing 6, which is equipped with to match with protrusion 41, forms the indent 61 of the step of clearance seal.
Protrusion 41 includes a raised step face 411, and indent 61 includes the interior concave station to match with raised step face 411
Terrace 611.
Gap between the raised step face 411 and concave step face 611 of matching is 1.5mm, 41 outer wall of protrusion of matching
Gap between 61 inner wall of indent is 1.0mm.
Embodiment two
A kind of centrifugal oil-air separator, it includes that shell 1, cavity partition 2, shaft 3 and drive disk 4 (further include certainly
Other components, but the inventive point due to being not directed to the invention, therefore details are not described herein), shell 1 divides for 11 He of upper housing
Lower case 12, cavity partition 2 are fixed at the position between upper housing 11 and lower case 12, cavity partition 2 and upper housing 11
Inner cavity forms disengagement chamber 5, the inner cavity formation drive chamber of cavity partition 2 and lower case 12, and drive disk 4 is located in drive chamber, and
The center position of cavity partition 2 is equipped with the through-hole of connection disengagement chamber 5 and drive chamber, and the fixed setting of casing 6 is in through-holes, turns
3 upper end of axis is rotatably assorted with upper housing 11, and shaft 3 is located at the separator disk that the part in disengagement chamber 5 is equipped with several stackings
Piece, 3 lower end of shaft are fixedly connected after passing through casing 6 with drive disk 4, and the outer diameter of shaft 3 is less than the internal diameter of casing 6, clearance seal
The protrusion 41 of annular including 4 upper end step shape of drive disk, the lower end of casing 6, which is equipped with to match with protrusion 41, forms clearance seal
The indent 61 of step.
Protrusion 41 includes a raised step face 411, and indent 61 includes the interior concave station to match with raised step face 411
Terrace 611.
Gap between the raised step face 411 and concave step face 611 of matching is 0.5mm, 41 outer wall of protrusion of matching
Gap between 61 inner wall of indent is 0.1mm.
Embodiment three
As shown in figure 5, a kind of centrifugal oil-air separator, it includes shell 1, cavity partition 2, shaft 3 and drive disk 4
(certainly further including other components, but the inventive point due to being not directed to the invention, therefore details are not described herein), shell 1 divides
For upper housing 11 and lower case 12, cavity partition 2 is fixed at the position between upper housing 11 and lower case 12, cavity partition 2
Disengagement chamber 5, the inner cavity formation drive chamber of cavity partition 2 and lower case 12 are formed with the inner cavity of upper housing 11, and drive disk 4 is located at
In drive chamber, and the center position of cavity partition 2 is equipped with the through-hole of connection disengagement chamber 5 and drive chamber, and casing 6 is fixedly installed
In through-holes, 3 upper end of shaft is rotatably assorted with upper housing 11, and the part that shaft 3 is located in disengagement chamber 5 is equipped with several layers
Folded separation disc, 3 lower end of shaft are fixedly connected after passing through casing 6 with drive disk 4, and clearance seal includes end stand on drive disk 4
The protrusion 41 of stepped annular, protrusion 41 are axial protrusion, and the axis of the axis of raised 41 axis, casing 6, shaft 3,
The axis of indent 61 is on the same straight line, and the lower end of casing 6 is equipped with the step for forming clearance seal that matches with protrusion 41
Indent 61.
Protrusion 41 includes three raised step faces 411, and indent 61 includes the three interior concave stations to match with raised step face 411
Terrace 611.
Gap between the raised step face 411 and concave step face 611 of matching is 2mm, 41 outer wall of protrusion of matching and
Gap between 61 inner wall of indent is 1.5mm.
Example IV
As shown in fig. 6, the groove 412 that the upper surface of protrusion 41 is equipped with truncated cone-shaped (also is understood as cross section as back taper
The groove of shape), on the same line, the internal diameter of 412 upper end of groove is greater than groove to the axis of the axis of groove 412 and protrusion 41
The internal diameter of 412 lower ends, and the internal diameter of 412 upper end of groove is more than or equal to the internal diameter of casing 6, the internal diameter of 412 lower end of groove, which is equal to, to be turned
The outer diameter of axis 3；In order to enable can be carried out at annular knurl in the inner wall of groove 412 with being easy to dish out when the oil in groove 412 is centrifuged
Reason.
Remaining structure is the same as example 1.
Embodiment five
As shown in Figure 7 and Figure 8, the internal diameter of 412 lower end of groove is greater than the outer diameter of shaft 3, the internal diameter of general 412 lower end of groove
Greater than 2~10mm of outer diameter of shaft 3 (this example 6mm can also be 2mm, 4mm, 5mm, 7mm, 8mm or 10mm etc.).
Remaining structure is identical as example IV.
Embodiment six
Shown in Fig. 9, the bottom surface of indent 61 is equipped with axial raised oil scraper ring 612, and the internal diameter of oil scraper ring 612 is equal to casing
6 internal diameter, and the outer diameter of oil scraper ring 612 is less than the internal diameter of 412 upper end of groove, the outer wall of oil scraper ring 612 is straight wall, certainly may be used
It is to be arranged to skew wall or arcwall by the outer wall of oil scraper ring 612.
The end of 612 lower end of oil scraper ring is located in groove 412, and the inner wall of the end of 612 lower end of oil scraper ring and groove 412
Between there are gaps, the end of general 612 lower end of oil scraper ring is located in groove 412, and the end of 612 lower end of oil scraper ring and groove
412 inner wall does not contact.
Remaining structure is identical as example IV or identical as embodiment five.
A kind of engine, it includes centrifugal oil-air separator described in any of the above-described embodiment, centrifugal Oil-gas Separation
Device is used for purifying engine crank case gases.
It should be understood that above-mentioned "upper", "lower", "left", "right", " preceding " and " rear " be only for the purposes of description, not structure
At limitation.
It is above the preferred section Example of the utility model, all conventional substitutions or to can be realized this practical new
The same or similar function of type is changed embodiment in the case where not departing from the principles of the present invention and spirit, repairs
Change, replace, integrating and parameter modification is each fallen in the protection scope of the utility model.
Claims (10)
1. a kind of centrifugal oil-air separator, it includes shell (1), cavity partition (2), shaft (3) and drive disk (4), described
Cavity partition (2) and shell (1) are separated out disengagement chamber (5), and cavity partition (2) is equipped with casing (6), under the shaft (3)
End is connect with drive disk (4) afterwards across casing (6), it is characterised in that: the upper end of the drive disk (4) and the lower end of casing (6)
Between be equipped with step clearance seal.
2. centrifugal oil-air separator according to claim 1, it is characterised in that: the clearance seal includes drive disk
(4) protrusion (41) of the annular of upper end step shape, the lower end of described sleeve pipe (6), which is equipped with to match with raised (41), forms clearance seal
Step indent (61).
3. centrifugal oil-air separator according to claim 2, it is characterised in that: the protrusion (41) includes at least one
Raised step face (411), the indent (61) include at least one the concave step face to match with raised step face (411)
(611)。
4. centrifugal oil-air separator according to claim 2, it is characterised in that: the raised step face of the matching
(411) between the gap between concave step face (611) is greater than between protrusion (41) outer wall and indent (61) inner wall to match
Gap.
5. centrifugal oil-air separator according to claim 4, it is characterised in that: the raised step face of the matching
(411) gap between concave step face (611) is 0.5~2mm, and protrusion (41) outer wall of the matching and indent (61) are interior
Gap between wall is 0.1~1.5mm.
6. centrifugal oil-air separator according to claim 2, it is characterised in that: set on the upper surface of the protrusion (41)
Have a groove (412) of truncated cone-shaped, the axis of the axis of groove (412) and raised (41) on the same line, the groove (412)
The internal diameter of upper end is greater than the internal diameter of groove (412) lower end, and the internal diameter of groove (412) upper end is more than or equal to the internal diameter of casing (6).
7. centrifugal oil-air separator according to claim 6, it is characterised in that: the internal diameter of groove (412) lower end
Greater than the outer diameter of shaft (3).
8. centrifugal oil-air separator according to claim 6, it is characterised in that: the bottom surface of indent (61) is equipped with axial
The oil scraper ring (612) of protrusion, the internal diameter of the oil scraper ring (612) are equal to the internal diameter of casing (6), and the outer diameter of oil scraper ring (612)
Less than the internal diameter of groove (412) upper end.
9. centrifugal oil-air separator according to claim 8, it is characterised in that: the end of oil scraper ring (612) lower end
Portion is located in groove (412), and there are gaps between the end of oil scraper ring (612) lower end and the inner wall of groove (412).
10. a kind of engine, it is characterised in that: it includes centrifugal oil-air separator described in any of the above-described claim, from
Core type gs-oil separator is used for purifying engine crank case gases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822266440.8U CN209398477U (en) | 2018-12-29 | 2018-12-29 | A kind of centrifugal oil-air separator and its engine used |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822266440.8U CN209398477U (en) | 2018-12-29 | 2018-12-29 | A kind of centrifugal oil-air separator and its engine used |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209398477U true CN209398477U (en) | 2019-09-17 |
Family
ID=67897432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822266440.8U Withdrawn - After Issue CN209398477U (en) | 2018-12-29 | 2018-12-29 | A kind of centrifugal oil-air separator and its engine used |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209398477U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630234A (en) * | 2018-12-29 | 2019-04-16 | 宁波立达智能控制技术有限公司 | A kind of centrifugal oil-air separator and its engine used |
-
2018
- 2018-12-29 CN CN201822266440.8U patent/CN209398477U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109630234A (en) * | 2018-12-29 | 2019-04-16 | 宁波立达智能控制技术有限公司 | A kind of centrifugal oil-air separator and its engine used |
| CN109630234B (en) * | 2018-12-29 | 2024-03-05 | 宁波立达智能控制技术有限公司 | Centrifugal oil-gas separator and engine using same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1422389A3 (en) | Centrifugal oil separator | |
| CN201519618U (en) | Centrifugal filter | |
| CN106917655B (en) | Rotary drum filtering type oil-gas separator | |
| CN103032347A (en) | Centrifugal compressor with insulation structure | |
| CN209398477U (en) | A kind of centrifugal oil-air separator and its engine used | |
| CN203548924U (en) | Axial labyrinth seal structure | |
| CN108087121B (en) | A kind of aero-engine eccentric contract | |
| CN110500159A (en) | Active gs-oil separator | |
| CN112392563A (en) | High-rotating-speed oil-gas separator for turbine engine | |
| CN109630234A (en) | A kind of centrifugal oil-air separator and its engine used | |
| CN103362854A (en) | Centrifugal compressor | |
| CN210686086U (en) | Active oil-gas separator | |
| CN202789664U (en) | Centrifugal compressor | |
| CN2832308Y (en) | Centrifuge bottom flow spray nozzle | |
| CN2047990U (en) | Rotary cylinder centrifugal dust separator | |
| CN103821722A (en) | Compressor | |
| CN209451479U (en) | Gs-oil separator sealing structure | |
| CN2782944Y (en) | Centrifugal lubricant filter | |
| CN103899541A (en) | Draining pump | |
| CN207795338U (en) | Gs-oil separator | |
| CN1834414A (en) | Centrifugal machine oil filter | |
| WO2020119602A1 (en) | Differential apparatus, air purifying apparatus and air purifier | |
| CN207019227U (en) | A kind of accurate atomizer | |
| CN212717177U (en) | Oil distribution pipe assembly and compressor | |
| CN205638847U (en) | Composite piston formula electron vacuum pump that car was used |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190917 Effective date of abandoning: 20240305 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190917 Effective date of abandoning: 20240305 |