CN106438349A - Hydraulic pressure vane pump machine halt protection structure - Google Patents
Hydraulic pressure vane pump machine halt protection structure Download PDFInfo
- Publication number
- CN106438349A CN106438349A CN201610995064.9A CN201610995064A CN106438349A CN 106438349 A CN106438349 A CN 106438349A CN 201610995064 A CN201610995064 A CN 201610995064A CN 106438349 A CN106438349 A CN 106438349A
- Authority
- CN
- China
- Prior art keywords
- valve body
- installing hole
- reversion
- hole
- ratchet wheel
- 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.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
- F04C14/28—Safety arrangements; Monitoring
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
The invention discloses a hydraulic pressure vane pump machine halt protection structure, including a pump body, a pin seat, a damp body and a ratchet wheel, the two ends of the pump body are covered and provided with a front end cover and a back end cover, the inside of the pump body is provided with a stator, the inside of the stator is provided with a rotator, the inside of a sliding vane concave groove on the rotator is provided with a sliding vane, the rotator is through provided on a drive shaft, the shaft head of the drive shaft runs through a transfer round hole and a push force shaft bearing; one side of the back end cover is provided with a reversely rotating damp body, the low end of which is connected with the ratchet wheel, a rotating cylinder is provided inside an oil liquid master chamber, a convex ring and an outside step are coordinated with each other; a mounting shaft between a first round groove of the damp body and a second round groove of the ratchet wheel is provided with an external gear; the middle of the push force shaft bearing and the bottom surface of a under cylinder groove on the low end of the ratchet body is provided with a wave shape spring; the inside of a block pin hole on the pin seat is provided with a block pin, the middle of the block pin and the bottom of the block pin hole is provided with a stopping spring; the structure is simple, is convenient to be installed, has good reverse rotating effect, can be widely promoted and applied.
Description
【Technical field】
The present invention relates to the technical field of sliding-vane pump, particularly single action vane pump transient state damp the technology of anti-reverse-rotation structure
Field.
【Background technology】
Sliding-vane pump is shut down suddenly, due to inlet and outlet pressure difference effect, causes rotor to reverse, causes the slide plate on rotor to damage
Bad.Meanwhile, reversion causes pipeline water hammer, causes system shock, causes motor and device damage, causes mechanical seal to damage.Existing
Stage generally adopts unilateral bearing, and this kind of structure is applied under low pressure operating mode, anti-reverse in high voltage transient operating mode, as moment rushes
Power lifting is hit, easily causes unilateral bearing to fail, being badly in need of one kind for this being capable of moment anti-reverse-rotation structure.Work is being inverted for moment
Under condition, being prevented from can be with the damping mechanism of flexible absorbent instant impact while reversion.
【Content of the invention】
The purpose of the present invention is exactly to solve the problems of the prior art, proposes a kind of hydraulic vane pump stoppage protection structure,
Can effectively prevent rotor from inverting, flexible absorbent, the associated components such as protection slide plate can be carried out to the reverse impact produced by reversion
It is not damaged.
For achieving the above object, the present invention proposes a kind of hydraulic vane pump stoppage protection structure, including the pump housing, key seat,
Reversion damping body and ratchet wheel body, the pump housing two ends are covered with drive end bearing bracket and rear end cap, and the inner side of the pump housing is provided with stator, stator
Be internally provided with rotor, in the slide plate groove on rotor, be provided with slide plate, rotor wears on the driving shaft, in the middle part of drive shaft with turn
Son is by being driven bonded, the rotor and stator decentraction；The spindle nose of the drive shaft passes through transmission circular hole and thrust bearing,
Spindle nose and the rotation synchronization for being driven circular hole, the axle tail of drive shaft is located on the outside of drive end bearing bracket, offers transmission keyway on axle tail；Described
Rear end cap side is provided with reversion damping body, and reversion damping body lower end is connected with ratchet wheel body, and rotary cylinder is arranged on fluid master
Intracavity；External gear is provided with installation axle between the first circular groove inside the reversion damping body and the second circular groove of ratchet wheel body,
External gear is meshed with the internal gear on ratchet wheel body；Arrange between the thrust bearing and the lower cylinder groove bottom of ratchet wheel body lower end
There is wavy spring；Backing pin in the hole on key seat is provided with backing pin, and backing pin one end is contacted with the anti-rotation ratchet of ratchet wheel body lower end, gear
Tripping spring is provided between pin and backing pin bottom hole face.
Preferably, the internal gear is arranged in the rotary cylinder of ratchet wheel body upper end, the sealing of ratchet wheel body upper surface is recessed
Be provided with sealing ring in ring, sealing ring thickness than sealing the big 2～3mm of depth of scrobicular ring, sealing scrobicular ring be located at rotary cylinder with outer
Between step；Some oil-through holes are provided with the outside of the rotary cylinder, and oil-through hole is connected with the bottom of the tooth of internal gear.
Preferably, the backing pin hole number is several, backing pin hole being evenly distributed on around the axial line of transmission circular hole
On key seat.
Preferably, the reversion damping body upper end is provided with upper oil cavitie and the 4th valve body installing hole, on upper oil cavitie bottom surface
The 3rd valve body for arranging is installed in the hole and is provided with the 3rd fuel tap, and the 4th valve body is installed in the hole and is provided with the 4th fuel tap, reversion damping
Body lower end is provided with lower oil cavitie and the first valve body installing hole, and reversion damping body side surface is provided with the second valve body installing hole, the first valve
Body installing hole and the second valve body are installed in the hole and are correspondingly arranged on the first fuel tap and the second fuel tap；The fluid main chamber and the 4th valve body
Installing hole is connected by upper oil duct, and fluid main chamber is connected by lower oil duct with the first valve body installing hole, fluid main chamber and
Two valve body installing holes are connected by side oil duct, the radial direction oil hole on the second fuel tap respectively with the 3rd valve body installing hole and lower oil cavitie
It is connected by oilhole, the axial oilhole on the second fuel tap is connected with side oil duct, between lower oil cavitie and the first valve body installing hole
It is connected by oilhole, is connected by oilhole between upper oil cavitie and the 4th valve body installing hole；First fuel tap allows fluid flowing
Direction flows to the first valve body installing hole for fluid fluid main chamber, and it is lower oil cavitie and the 3rd valve that the second fuel tap allows fluid flow direction
Body installing hole flows to fluid main chamber, and the 3rd fuel tap allows fluid flow direction to flow to the 3rd valve body installing hole for upper oil cavitie, and the 4th
Fuel tap allows fluid flow direction to flow to the 4th valve body installing hole for fluid main chamber.
Preferably, the axial line of the installation axle is misaligned with the axial line of rotary cylinder；On the reversion damping body
End is provided with upper cover plate, and reversion damping body lower end is provided with lower cover, and the second fuel tap rear end is provided with mother rib lateral rotundum cover plate；The cunning
Piece is contacted with stator medial wall all the time；Bulge loop on the reversion damping body is matched with the outer step on ratchet wheel body.
Beneficial effects of the present invention：The present invention passes through to arrange the spindle nose of drive shaft with key seat synchronized links, the gear of key seat
Backing pin is provided with pin-and-hole, backing pin one end is withstood on the anti-rotation ratchet of ratchet wheel body lower end, reversion damping body is internally provided with correlation
Oil pocket and fuel tap so that drive shaft is realized preventing the effect of its reversion by anti-rotation ratchet and fluid in the case of reversion；If
Wavy spring and sealing ring is equipped with, ratchet wheel body end face can tightly be withstood on the downside of reversion damping body, can be effectively ensured
Fluid inside fluid main chamber does not leak；Present configuration is simple, and easy for installation, anti-reverse effect is good, extensively can be pushed away
Wide and application.
The feature and advantage of the present invention will combine accompanying drawing by embodiment and be described in detail.
【Description of the drawings】
Fig. 1 is a kind of main view profile of hydraulic vane pump stoppage protection structure of the present invention；
Fig. 2 is a kind of side cutaway view of hydraulic vane pump stoppage protection structure of the present invention；
Fig. 3 is cuing open for a kind of damping body of hydraulic vane pump stoppage protection structure of the present invention, installation axle and external tooth wheel side
Face schematic diagram；
Fig. 4 is a kind of damping body front view of hydraulic vane pump stoppage protection structure of the present invention；
Fig. 5 is a kind of damping body A-A profile of hydraulic vane pump stoppage protection structure of the present invention；
Fig. 6 is a kind of damping body schematic perspective view of hydraulic vane pump stoppage protection structure of the present invention；
Fig. 7 is a kind of another schematic perspective view of damping body of hydraulic vane pump stoppage protection structure of the present invention；
Fig. 8 is a kind of ratchet wheel body schematic perspective view of hydraulic vane pump stoppage protection structure of the present invention；
Fig. 9 is a kind of another schematic perspective view of ratchet wheel body of hydraulic vane pump stoppage protection structure of the present invention；
Figure 10 is a kind of key seat schematic perspective view of hydraulic vane pump stoppage protection structure of the present invention.
In figure：The 1- pump housing, 2- drive end bearing bracket, 3- rear end cap, 4- stator, 5- rotor, 501- slide plate groove, 6- slide plate, 7- drive
Moving axis, 701- spindle nose, 702- axle tail, 703- transmission keyway, 8- key seat, 801- transmission circular hole, 802- backing pin hole, 803- bearing are recessed
Platform, 9- reversion damping body, 901- install end cap, 902- installing hole, 903- bulge loop, 904- fluid main chamber, the first circular groove of 905-,
906- upper oil cavitie, the 4th valve body installing hole of 907-, 908- lower oil cavitie, 909- the first valve body installing hole, the second valve body of 910- are installed
Hole, the 3rd valve body installing hole of 911-, the upper oil duct of 912-, oil duct, 914- side oil duct, the first fuel tap of 915-, 916- second under 913-
Fuel tap, the 3rd fuel tap of 917-, the 4th fuel tap of 918-, 919- upper cover plate, 920- lower cover, 921- mother rib lateral rotundum cover plate, 922- are radially
Oilhole, 923- axial direction oilhole, 10- ratchet wheel body, 1001- rotary cylinder, 1002- oil-through hole, 1003- internal gear, 1004- second justify
Groove, 1005- outer step, 1006- sealing scrobicular ring, 1007- anti-rotation ratchet, cylinder groove under 1008-, 11- installation axle, 12- external gear,
13- backing pin, 14- tripping spring, 15- thrust bearing, 16- wavy spring, 17- sealing ring, 18- driving key.
【Specific embodiment】
Refering to Fig. 1-Figure 10, a kind of hydraulic vane pump stoppage protection structure of the present invention, including the pump housing 1, key seat 8, reversion resistance
Buddhist nun's body 9 and ratchet wheel body 10,1 two ends of the pump housing are covered with drive end bearing bracket 2 and rear end cap 3, and the inner side of the pump housing 1 is provided with stator 4, fixed
Son 4 is internally provided with rotor 5, is provided with slide plate 6 in the slide plate groove 501 on rotor 5, and rotor 5 is located in drive shaft 7, is driven
The middle part of moving axis 7 is connected by driving key 18 with rotor 5, the rotor 5 and 4 decentraction of stator；The spindle nose 701 of the drive shaft 7
Through transmission circular hole 801 and thrust bearing 15, spindle nose 701 and the rotation synchronization for being driven circular hole 801,702, the axle tail of drive shaft 7
In 2 outside of drive end bearing bracket, transmission keyway 703 on axle tail 702, is offered；3 side of the rear end cap is provided with reversion damping body 9, instead
Turn 9 lower end of damping body to be connected with ratchet wheel body 10, rotary cylinder 1001 is arranged in fluid main chamber 904；The reversion damping body 9
External gear 12, external gear are provided with installation axle 11 between the first internal circular groove 905 and the second circular groove 1004 of ratchet wheel body 10
12 are meshed with the internal gear 1003 on ratchet wheel body 10；The thrust bearing 15 and 1008 bottom of lower cylinder groove of 10 lower end of ratchet wheel body
Wavy spring 16 is provided between face；Backing pin 13,13 one end of backing pin and ratchet wheel body 10 are provided with backing pin hole 802 on key seat 8
The anti-rotation ratchet 1007 of lower end contacts, and is provided with tripping spring 14 between backing pin 13 and 802 bottom surface of backing pin hole；The internal gear
In 1003 rotary cylinders 1001 for being arranged on 10 upper end of ratchet wheel body, it is provided with the sealing scrobicular ring 1006 of 10 upper surface of ratchet wheel body close
Seal 17,17 thickness of sealing ring, 2～3mm bigger than the depth for sealing scrobicular ring 1006, sealing scrobicular ring 1006 is located at rotary cylinder 1001
Between outer step 1005；1001 outside of the rotary cylinder is provided with some oil-through holes 1002, oil-through hole 1002 and internal gear
1003 bottom of the tooth is connected；802 quantity of backing pin hole is several, and backing pin hole 802 is equal around the axial line of transmission circular hole 801
Even it is distributed on key seat 8；Reversion 9 upper end of damping body is provided with upper oil cavitie 906 and the 4th valve body installing hole 907, upper oil cavitie
The 3rd fuel tap is provided with the 3rd valve body installing hole 911 for arranging on 906 bottom surfaces, in the 4th valve body installing hole 907, is provided with the
Four fuel taps 918, reversion 9 lower end of damping body is provided with lower oil cavitie 908 and the first valve body installing hole 909, and reversion 9 side of damping body sets
The second valve body installing hole 910 is equipped with, in the first valve body installing hole 909 and the second valve body installing hole 910, is correspondingly arranged on the first oil
Valve 915 and the second fuel tap 916；The fluid main chamber 904 is connected by upper oil duct 912 with the 4th valve body installing hole 907, fluid
Main chamber 904 is connected by lower oil duct 913 with the first valve body installing hole 909, fluid main chamber 904 and the second valve body installing hole 910
Be connected by side oil duct 914, the radial direction oil hole 922 on the second fuel tap 916 respectively with the 3rd valve body installing hole 911 and lower oil cavitie
908 are connected by oilhole, and the axial oilhole 923 on the second fuel tap 916 is connected with side oil duct 914, lower oil cavitie 908 and first
It is connected by oilhole between valve body installing hole 909, is connected by oilhole between upper oil cavitie 906 and the 4th valve body installing hole 907
Logical；First fuel tap 915 allows fluid flow direction to flow to the first valve body installing hole 909, the second fuel tap for fluid fluid main chamber 904
916 permission fluid flow directions are that lower oil cavitie 908 and the 3rd valve body installing hole 911 flow to fluid main chamber 904, the 3rd fuel tap 917
Fluid flow direction is allowed to flow to the 3rd valve body installing hole 911 for upper oil cavitie 906, the 4th fuel tap 918 allows fluid flow direction
The 4th valve body installing hole 907 is flowed to for fluid main chamber 904；The axial line of the axial line of the installation axle 11 and rotary cylinder 1001
Misaligned；Reversion 9 upper end of damping body is provided with upper cover plate 919, and reversion 9 lower end of damping body is provided with lower cover 920, and second
916 rear end of fuel tap is provided with mother rib lateral rotundum cover plate 921；The slide plate 6 is contacted with 4 medial wall of stator all the time；The reversion damping
Bulge loop 903 on body 9 is matched with the outer step 1005 on ratchet wheel body 10.
Work process of the present invention：
A kind of hydraulic vane pump stoppage protection structure of the present invention in the course of the work, when drive shaft 7 stops operating, rotor
Slide plate 6 on 5 is inverted under the effect of fluid reverse flow, and now spindle nose 701 is inverted with key seat 8 so that backing pin 13 is stuck in anti-
Turn on ratchet 1007, ratchet wheel body 10 rotates and external gear 12 is rotated, fluid constantly will by internal gear 1003 and external gear 12
Fluid constantly flows to the first valve body installing hole 909 from fluid main chamber 904, then flows to lower oil cavitie 908, in lower oil cavitie 908 and oil
The continuous accumulation fluid of liquid main chamber 904, so as to produce damping, prevents drive shaft 7 from inverting；When normal operation, the oil in damping body 9
Liquid passes sequentially through fluid main chamber 904, the 4th valve body installing hole 907, upper oil cavitie 906, the 3rd valve body installing hole 911 and the second valve body
Installing hole 910, finally flows back to fluid main chamber 904, forms a circulation, it is ensured that single action vane pump normally runs.
The present invention passes through to arrange the spindle nose 701 of drive shaft 7 and 8 synchronized links of key seat, sets in the backing pin hole 802 of key seat 8
Backing pin 13 is equipped with, 13 one end of backing pin is withstood on the anti-rotation ratchet 1007 of 10 lower end of ratchet wheel body, damping body 9 is internally provided with related oil
Chamber and fuel tap so that drive shaft 7 is realized preventing the effect of its reversion by anti-rotation ratchet 1007 and fluid in the case of reversion
Really；Wavy spring 16 and sealing ring 17 is provided with, 10 end face of ratchet wheel body tightly can be withstood on the downside of reversion damping body 9,
The fluid inside fluid main chamber 904 can be effectively ensured do not leak；Present configuration is simple, and easy for installation, anti-reverse effect is good,
Can be widely popularized and be applied.
Above-described embodiment is the description of the invention, is not limitation of the invention, any to simple transformation of the present invention after
Scheme belong to protection scope of the present invention.
Claims (5)
1. a kind of hydraulic vane pump stoppage protection structure, it is characterised in that：Including the pump housing (1), key seat (8), reversion damping body (9)
With ratchet wheel body (10), the pump housing (1) two ends are covered with drive end bearing bracket (2) and rear end cap (3), and it is fixed that the inner side of the pump housing (1) is provided with
Sub (4), stator (4) is internally provided with rotor (5), is provided with slide plate (6), rotor in the slide plate groove (501) on rotor (5)
(5) be located in drive shaft (7), be connected by driving key (18) with rotor (5) in the middle part of drive shaft (7), rotor (5) with fixed
Sub (4) decentraction；The spindle nose (701) of drive shaft (7) is through transmission circular hole (801) and thrust bearing (15), spindle nose (701)
With the rotation synchronization of transmission circular hole (801), the axle tail (702) of drive shaft (7) is on the outside of drive end bearing bracket (2), and axle tail is opened on (702)
It is provided with transmission keyway (703)；Rear end cap (3) side is provided with reversion damping body (9), reversion damping body (9) lower end and spine
Wheel body (10) is connected, and rotary cylinder (1001) is arranged in fluid main chamber (904)；Reversion damping body (9) internal the
External gear (12), external tooth are provided with installation axle (11) between second circular groove (1004) of one circular groove (905) and ratchet wheel body (10)
Wheel (12) is meshed with the internal gear (1003) on ratchet wheel body (10)；Under thrust bearing (15) and ratchet wheel body (10) lower end
Wavy spring (16) is provided between cylinder groove (1008) bottom surface；Backing pin is provided with backing pin hole (802) on key seat (8)
(13), backing pin (13) one end is contacted with the anti-rotation ratchet (1007) of ratchet wheel body (10) lower end, backing pin (13) and backing pin hole (802)
Tripping spring (14) is provided between bottom surface.
2. a kind of hydraulic vane pump stoppage protection structure as claimed in claim 1, it is characterised in that：Internal gear (1003)
It is arranged in the rotary cylinder (1001) of ratchet wheel body (10) upper end, arranges in the sealing scrobicular ring (1006) of ratchet wheel body (10) upper surface
There is sealing ring (17), sealing ring (17) thickness 2～3mm bigger than the depth of sealing scrobicular ring (1006), sealing scrobicular ring (1006) is located at
Between rotary cylinder (1001) and outer step (1005)；Some oil-through holes are provided with the outside of rotary cylinder (1001)
(1002), oil-through hole (1002) is connected with the bottom of the tooth of internal gear (1003).
3. a kind of hydraulic vane pump stoppage protection structure as claimed in claim 1, it is characterised in that：Backing pin hole (802)
Quantity is several, and backing pin hole (802) are evenly distributed on key seat (8) around the axial line of transmission circular hole (801).
4. a kind of hydraulic vane pump stoppage protection structure as claimed in claim 1, it is characterised in that：The reversion damping body
(9) upper end is provided with upper oil cavitie (906) and the 4th valve body installing hole (907), the 3rd valve body for arranging on upper oil cavitie (906) bottom surface
The 3rd fuel tap is provided with installing hole (911), in the 4th valve body installing hole (907), is provided with the 4th fuel tap (918), reversion damping
Body (9) lower end is provided with lower oil cavitie (908) and the first valve body installing hole (909), and reversion damping body (9) side is provided with the second valve
Body installing hole (910), is correspondingly arranged on the first fuel tap in the first valve body installing hole (909) and the second valve body installing hole (910)
(915) and the second fuel tap (916)；Fluid main chamber (904) are with the 4th valve body installing hole (907) by upper oil duct (912) phase
Connection, fluid main chamber (904) is connected by lower oil duct (913) with the first valve body installing hole (909), fluid main chamber (904) and
Second valve body installing hole (910) is connected by side oil duct (914), the radial direction oil hole (922) on the second fuel tap (916) respectively with
3rd valve body installing hole (911) is connected by oilhole with lower oil cavitie (908), the axial oilhole (923) on the second fuel tap (916)
It is connected with side oil duct (914), is connected by oilhole between lower oil cavitie (908) and the first valve body installing hole (909), upper oil cavitie
(906) it is connected by oilhole between the 4th valve body installing hole (907)；First fuel tap (915) allow fluid flow direction be
Fluid fluid main chamber (904) flows to the first valve body installing hole (909), and it is lower oil that the second fuel tap (916) allows fluid flow direction
Chamber (908) and the 3rd valve body installing hole (911) flow to fluid main chamber (904), and the 3rd fuel tap (917) permission fluid flow direction is
Upper oil cavitie (906) flows to the 3rd valve body installing hole (911), and it is fluid main chamber that the 4th fuel tap (918) allows fluid flow direction
(904) the 4th valve body installing hole (907) is flowed to.
5. a kind of hydraulic vane pump stoppage protection structure as claimed in claim 1, it is characterised in that：Installation axle (11)
Axial line is misaligned with the axial line of rotary cylinder (1001)；Reversion damping body (9) upper end is provided with upper cover plate (919),
Reversion damping body (9) lower end is provided with lower cover (920), and the second fuel tap (916) rear end is provided with mother rib lateral rotundum cover plate (921)；Institute
State slide plate (6) to contact with stator (4) medial wall all the time；Bulge loop (903) and ratchet wheel body (10) on reversion damping body (9)
On outer step (1005) match.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610995064.9A CN106438349A (en) | 2016-11-11 | 2016-11-11 | Hydraulic pressure vane pump machine halt protection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610995064.9A CN106438349A (en) | 2016-11-11 | 2016-11-11 | Hydraulic pressure vane pump machine halt protection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106438349A true CN106438349A (en) | 2017-02-22 |
Family
ID=58208365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610995064.9A Pending CN106438349A (en) | 2016-11-11 | 2016-11-11 | Hydraulic pressure vane pump machine halt protection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106438349A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3799692A (en) * | 1972-09-22 | 1974-03-26 | Carrier Corp | Anti-reverse rotation structure for rotary gas compressors |
| CN201025257Y (en) * | 2007-02-01 | 2008-02-20 | 沈阳赛沃科技发展有限公司 | Fully automatic hydraulic pressure and reverse rotation prevention device |
| CN204152828U (en) * | 2014-10-09 | 2015-02-11 | 无锡利欧锡泵制造有限公司 | Water pump anti-reverse mechanism |
| CN205423204U (en) * | 2016-03-21 | 2016-08-03 | 温州博铭机械有限公司 | Reverse rotator is prevented to latent oily charge pump of modified |
| CN206144782U (en) * | 2016-11-11 | 2017-05-03 | 浙江大学城市学院 | Hydraulic pressure impeller pump shutdown protection structure |
-
2016
- 2016-11-11 CN CN201610995064.9A patent/CN106438349A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3799692A (en) * | 1972-09-22 | 1974-03-26 | Carrier Corp | Anti-reverse rotation structure for rotary gas compressors |
| CN201025257Y (en) * | 2007-02-01 | 2008-02-20 | 沈阳赛沃科技发展有限公司 | Fully automatic hydraulic pressure and reverse rotation prevention device |
| CN204152828U (en) * | 2014-10-09 | 2015-02-11 | 无锡利欧锡泵制造有限公司 | Water pump anti-reverse mechanism |
| CN205423204U (en) * | 2016-03-21 | 2016-08-03 | 温州博铭机械有限公司 | Reverse rotator is prevented to latent oily charge pump of modified |
| CN206144782U (en) * | 2016-11-11 | 2017-05-03 | 浙江大学城市学院 | Hydraulic pressure impeller pump shutdown protection structure |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170222 |
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| RJ01 | Rejection of invention patent application after publication |