CN208106777U - A kind of water pump prevents dry rotation structure - Google Patents
A kind of water pump prevents dry rotation structure Download PDFInfo
- Publication number
- CN208106777U CN208106777U CN201820533937.9U CN201820533937U CN208106777U CN 208106777 U CN208106777 U CN 208106777U CN 201820533937 U CN201820533937 U CN 201820533937U CN 208106777 U CN208106777 U CN 208106777U
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- Prior art keywords
- pump
- main shaft
- impeller
- ring
- chamber
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 238000007789 sealing Methods 0.000 claims abstract description 72
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims description 12
- 238000005096 rolling process Methods 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims 4
- 239000010721 machine oil Substances 0.000 claims 1
- 230000002349 favourable effect Effects 0.000 abstract description 4
- 230000001360 synchronised effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002633 protecting effect Effects 0.000 description 1
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a kind of water pumps to prevent dry rotation structure, including driving device, main shaft, impeller, the pump housing, pump cover, sealed support and mechanical sealing assembly, main shaft and driving device are sequentially connected, impeller is fixed on main shaft, pump cover is fixed on the pump housing, the pump chamber for accommodating liquid is formed between pump cover and the pump housing, sealed support is fixed on pump cover, the mechanical seal chamber for accommodating oil liquid is formed between pump cover and sealed support, one end of main shaft is located in mechanical seal chamber, the other end of main shaft is rotatably installed on pump cover by mechanical sealing assembly and is protruded into pump chamber, mechanical sealing assembly is built in mechanical seal chamber, for preventing mechanical sealing assembly is dry from turning, impeller is built in pump chamber.The utility model is it is possible to prevente effectively from dry the phenomenon that turning, and favorable sealing property occurs in the friction pair of mechanical seal.
Description
Technical field
The utility model relates to a kind of pumps more particularly to a kind of water pump to prevent dry rotation structure.
Background technique
Currently, the axle envelope of market charging pump generallys use mechanical seal form.Common mechanical seal is mechanical single seal,
Only one group of stationary ring, moving ring assembly, after the chamber where mechanical seal passes through gap and impeller between sealing ring and impeller
Aperture on cover board, is connected to pump chamber.Only when pump chamber has water, the chamber where mechanical seal just has water to mechanical seal
The pair (moving ring assembly and stationary ring) that rubs is lubricated and cools down.When water pump stops, pump chamber is anhydrous, where mechanical seal
Chamber is also anhydrous, is still operating if pumped at this time, and the friction pair of mechanical seal occurs dry turn, and dry raw heat of changing the line of production can not only be burnt
The secondary seal face of bad friction, but will burn out the rubber parts of auxiliary seal, mechanical seal is caused to be failed.
Utility model content
For overcome the deficiencies in the prior art, the purpose of this utility model is to provide a kind of water pumps to prevent dry rotation structure, can
Effectively to avoid the friction pair of mechanical seal from dry the phenomenon that turning, and favorable sealing property occur.
The purpose of this utility model adopts the following technical scheme that realization：
A kind of water pump prevents dry rotation structure, including driving device, main shaft, impeller, the pump housing, pump cover, sealed support and machinery are close
Sealing assembly, the main shaft and driving device are sequentially connected, and the impeller is fixed on main shaft, and the pump cover is fixed on the pump housing,
The pump chamber for accommodating liquid is formed between the pump cover and the pump housing, the sealed support is fixed on pump cover, the pump cover and
The mechanical seal chamber for accommodating oil liquid is formed between sealed support, one end of the main shaft is located in mechanical seal chamber, described
The other end of main shaft is rotatably installed on pump cover by mechanical sealing assembly and is protruded into pump chamber, the mechanical sealing assembly
It is built in mechanical seal chamber, for preventing mechanical sealing assembly is dry from turning, the impeller is built in pump chamber.
Further, axle sleeve is provided between the mechanical sealing assembly and main shaft, it is removable between the axle sleeve and main shaft
Connection is unloaded, O-ring seal is socketed on the main shaft, the O-ring seal is between main shaft and axle sleeve.
Further, the mechanical sealing assembly is double mechanical seal part.
Further, the mechanical sealing assembly include moving ring assembly, the first stationary ring, the second stationary ring, the first sealing ring and
Second sealing ring, the moving ring assembly are rotatably installed on axle sleeve, and first stationary ring and the second stationary ring are socketed on axis
The two sides of moving ring assembly are put on and are located at, first stationary ring is affixed with pump cover and is located in construction opening, first sealing
Ring set is connected on the first stationary ring, and first sealing ring, between the first stationary ring and pump cover, second sealing ring is socketed
In on the second stationary ring.
Further, the top of the sealed support has top cover, and second stationary ring and top cover are affixed, and described second is close
Seal ring is fixed with the fixation bracket for fixing driving device between the second stationary ring and top cover on the top cover, described solid
The bearing bore for accommodating rolling bearing group is formed between fixed rack and top cover, the main shaft passes through rolling bearing group rotationally
It is installed in bearing bore, the main shaft protrudes into bearing bore and connect with driving device, solid between the mechanical seal chamber and bearing bore
Surely there is oil mirror, the upside that the oil mirror is located at the second stationary ring offers on the top cover for observing the oil level of mechanical seal chamber
For discharging the oil-drain pipe of oil liquid, the oil-drain pipe is between bearing bore and mechanical seal chamber.
Further, the rolling bearing group includes upper bearing (metal) and lower bearing, and the upper bearing (metal) and lower bearing are and top cover
Affixed, the upper bearing (metal) is located at support bracket fastened lower section, and the lower bearing is located at below upper bearing (metal), under the oil-drain pipe is located at
The downside of bearing.
Further, the driving device is hydraulic motor.
Further, offer the accommodating cavity for accommodating hydraulic motor on the fixed bracket, the main shaft with it is hydraulic
The output axis connection of motor.
Further, have on the impeller and to radially extend along the axially extending impeller inlet of the impeller and along the impeller
Multiple impeller outlets, the impeller inlet are connected to impeller outlet, and unit fixed on water pump suction and exit of pump, institute are offered on the pump housing
State unit fixed on water pump suction, pump chamber, be connected between exit of pump, the impeller outlet is connected to pump chamber, the impeller inlet and water pump into
Mouth connection.
Compared with prior art, the beneficial effects of the utility model are：
Water pump in the utility model prevents dry rotation structure, including driving device, main shaft, impeller, the pump housing, pump cover, sealing branch
Frame and mechanical sealing assembly make main shaft and driving device be sequentially connected, and impeller is fixedly mounted the rotation of driving device driving spindle
In on main shaft, and then main shaft is able to drive impeller synchronous rotation, and pump cover is fixedly installed on the pump housing so that pump cover and the pump housing it
Between form the pump chamber for accommodating liquid, sealed support is fixedly installed on pump cover, between pump cover and sealed support formed be used for
The mechanical seal chamber of oil liquid is accommodated, one end of main shaft is located in mechanical seal chamber, and the major part of main shaft is made to be built in mechanical seal
In chamber, further, it is rotatably installed on the other end of main shaft on pump cover by mechanical sealing assembly and protrudes into pump chamber,
So that impeller is built in pump chamber, liquid is equipped in pump chamber, impeller rotates in pump chamber, so as to realize the defeated of liquid
It send.The mechanical sealing assembly is mounted on independent mechanical seal chamber, mechanical seal chamber is not connected to pump chamber, and mechanical seal chamber fills
Machinery oil is infused, in this way, pump chamber is anhydrous even if cutout occurs in water pump, still has mechanical oil immersion not have mechanical seal group in mechanical seal chamber
Part, if water pump is still operating, mechanical sealing assembly will not occur dry turning phenomenon, effective protection mechanical sealing assembly.To
Mechanical sealing assembly can be made to avoid the occurrence of dry the phenomenon that turning, mechanical sealing assembly is avoided to damage, so that mechanical sealing assembly
Favorable sealing property.
Detailed description of the invention
Fig. 1 is the schematic diagram that a kind of water pump of the utility model prevents dry rotation structure；
Fig. 2 is the structural schematic diagram that a kind of water pump of the utility model prevents mechanical sealing assembly in dry rotation structure；
In figure：10, hydraulic motor；11, main shaft；12, impeller；13, the pump housing；14, pump cover；15, sealed support；16, mechanical
Seal assembly；17, pump chamber；18, mechanical seal chamber；19, axle sleeve；20, O-ring seal；21, moving ring assembly；22, the first stationary ring；
23, the second stationary ring；24, top cover；25, fixed bracket；26, bearing bore；27, oil mirror；28, oil-drain pipe；29, upper bearing (metal)；30, under
Bearing；31, accommodating cavity；32, impeller inlet；33, impeller outlet；34, unit fixed on water pump suction；35, exit of pump；36, the first sealing ring；
37, the second sealing ring.
Specific embodiment
In the following, being described further in conjunction with attached drawing and specific embodiment to the utility model, it should be noted that
Under the premise of not colliding, it can be formed in any combination between various embodiments described below or between each technical characteristic new
Embodiment.
A kind of water pump as shown in Figure 1 prevents dry rotation structure, including driving device, main shaft 11, impeller 12, the pump housing 13, pump cover
14, sealed support 15 and mechanical sealing assembly 16, main shaft 11 and driving device are sequentially connected, and impeller 12 is fixed on main shaft 11,
Pump cover 14 is fixed on the pump housing 13, and the pump chamber 17 for accommodating liquid is formed between pump cover 14 and the pump housing 13, and sealed support 15 is solid
Due to forming the mechanical seal chamber 18 for accommodating oil liquid on pump cover 14, between pump cover 14 and sealed support 15, the one of main shaft 11
End is located in mechanical seal chamber 18, and the other end of main shaft 11 is rotatably installed on pump cover 14 simultaneously by mechanical sealing assembly 16
It protruding into pump chamber 17, mechanical sealing assembly 16 is built in mechanical seal chamber 18, for preventing 16 dry turns of mechanical sealing assembly, leaf
Wheel 12 is built in pump chamber 17.
As preferable embodiment a kind of in the present embodiment, as shown in Figure 1, the anti-dry turn of knot of water pump in the present embodiment
Structure, including driving device, main shaft 11, impeller 12, the pump housing 13, pump cover 14, sealed support 15 and mechanical sealing assembly 16, make main shaft
11 are sequentially connected with driving device, and driving device driving spindle 11 rotates, and impeller 12 are fixedly installed on main shaft 11, Jin Erzhu
Axis 11 is able to drive the synchronous rotation of impeller 12, pump cover 14 is fixedly installed on the pump housing 13, so that between pump cover 14 and the pump housing 13
The pump chamber 17 for accommodating liquid is formed, sealed support 15 is fixedly installed on pump cover 14, between pump cover 14 and sealed support 15
The mechanical seal chamber 18 for accommodating oil liquid is formed, one end of main shaft 11 is located in mechanical seal chamber 18, makes the big portion of main shaft 11
Divide and be built in mechanical seal chamber 18, further, pacifies the other end of main shaft 11 rotationally by mechanical sealing assembly 16
Loaded on pump cover 14 and protruding into pump chamber 17, so that impeller 12 is built in pump chamber 17, liquid, impeller 12 are equipped in pump chamber 17
It is rotated in pump chamber 17, so as to realize the conveying of liquid.The mechanical sealing assembly 16 is mounted on independent mechanical seal
Chamber 18, mechanical seal chamber 18 are not connected to pump chamber 17, and mechanical seal chamber 18 fills machinery oil, in this way, even if water pump stops
Pump chamber 17 is anhydrous, still has mechanical oil immersion not have mechanical sealing assembly 16 in mechanical seal chamber 18, mechanical close if water pump is still operating
Sealing assembly 16 will not occur dry turning phenomenon, effective protection mechanical sealing assembly 16.So as to so that mechanical sealing assembly 16 is kept away
Exempt from dry the phenomenon that turning occur, avoids mechanical sealing assembly 16 from damaging, so that the favorable sealing property of mechanical sealing assembly 16.
More preferably embodiment is as shown in Figure 1, 2, to make to be provided with axle sleeve between mechanical sealing assembly 16 and main shaft 11
19, so that being detachably connected between axle sleeve 19 and main shaft 11, mechanical sealing assembly 16 is double mechanical seal part.Make mechanical close
Sealing assembly 16 includes moving ring assembly 21, the first stationary ring 22, the second stationary ring 23, the first sealing ring 36 and the second sealing ring 37, so that
Moving ring assembly 21 is rotatably installed on axle sleeve 19, specifically, the first stationary ring 22 and the second stationary ring 23 is made to be socketed on axle sleeve
On 19, and the first stationary ring 22 and the second stationary ring 23 are respectively arranged in the two sides of moving ring assembly 21, so that the fixed peace of the first stationary ring 22
Loaded on the first stationary ring 22 is installed in construction opening, further, realize the second stationary ring 23 with top cover 24 solid
Fixed connection.More specifically, the first sealing ring 36 is socketed on the first stationary ring 22, and first sealing ring 36 is located at the first stationary ring
Between 22 and pump cover 14, it is socketed on the second sealing ring 37 on second stationary ring 23.The rotation of main shaft 11 drives axle sleeve 19 is synchronous to turn
Dynamic, axle sleeve 19, which rotates synchronously, drives moving ring assembly 21 to rotate synchronously, i.e., moving ring assembly 21 can be relative to the first stationary ring 22 and second
Stationary ring 23 rotates, to make the both ends of moving ring assembly 21 under the elasticity tension effect of the compressed spring inside moving ring assembly 21
Two contact faces between the-the first stationary ring 22, the second stationary ring 23 mutually fit closely respectively, and two contact faces it
Between form one layer of very thin liquid film in minimum gap, form certain resistance, prevent machinery oil from leaking, effectively lubricating machinery is close
Sealing assembly 16 realizes effectively sealing to reach preferable protecting effect.
It should be noted that as shown in Fig. 2, when it is implemented, moving ring assembly 21 is that the pre- radial screw that first passes through fixes peace
On axle sleeve 19, then axle sleeve 19 is sleeved on main shaft 11 again, disassembly assembly manipulation in this way is convenient.Rather than rotating ring group
Part 21 is directly installed on main shaft 11, when mechanical sealing assembly 16 being avoided to be directly installed on pump shaft, the peace of the offer of mechanical seal chamber 18
Dress space makes to install operating difficulties.U-shaped breach is provided in one end of axle sleeve 19 to dock with 12 key of impeller on main shaft 11, is guaranteed dynamic
Ring assemblies 21, axle sleeve 19 can be with 11 synchronous rotaries of main shaft.It is socketed with O-ring seal 20 on main shaft 11, pacifies O-ring seal 20
Loaded between main shaft 11 and axle sleeve 19, so as to improve the sealing performance of mechanical seal chamber 18.
It is noted that as shown in Figure 1, 2, being fixedly installed with top cover 24 at the top of sealed support 15, make second quiet
Ring 23 is fixedly connected with top cover 24, and the second sealing ring 37 is between the second stationary ring 23 and top cover 24, fixed on top cover 24
Fixation bracket 25 for fixing driving device is installed, provides support fixed function for driving device.Fixed bracket 25 with
Being formed between top cover 24 makes for accommodating the bearing bore 26 of rolling bearing group so that bearing bore 26 is connected to mechanical seal chamber 18
Main shaft 11 is rotatably installed in bearing bore 26 by rolling bearing group, further, make main shaft 11 protrude into bearing bore 26 with
Driving device connection, is fixedly installed with oil mirror 27 between mechanical seal chamber 18 and bearing bore 26, so that oil mirror 27 is quiet positioned at second
The upside of ring 23, and then the oil level of mechanical seal chamber 18 can be observed using oil mirror 27, observing oil level by oil mirror 27 can ensure that oil
Position can submerge mechanical sealing assembly 16, prevent the machinery oil in mechanical seal chamber 18 very few, mechanical sealing assembly 16 is caused to go out
Now dry the phenomenon that turning.Further, the oil-drain pipe 28 for discharging axle envelope Leakage Energy liquid is offered on top cover 24, makes to arrange
Oil-piping 28 is between bearing bore 26 and mechanical seal chamber 18, i.e., the oil-drain pipe 28 is located at the second stationary ring 23 and rolling bearing
Between group, so that machinery oil in mechanical seal chamber 18 is when mechanical seal failure leaks, it can be from oil-drain pipe
28 are emitted into outside water pump, prevent excessive machinery oil from accumulating in inside water pump.
Further, as shown in Figure 1, 2, rolling bearing group includes upper bearing (metal) 29 and lower bearing 30, makes 29 He of upper bearing (metal)
Lower bearing 30 is fixedly connected with top cover 24, so that upper bearing (metal) 29 is located at the lower section of fixed bracket 25, lower bearing 30 is located at upper axis
29 lower sections are held, further, oil-drain pipe 28 is located at the downside of lower bearing 30, and then can bear main shaft using rolling bearing group
11 axial force avoids axial force from applying on the drive means.
Specifically, it as shown in Figure 1, the driving device in the present embodiment is hydraulic motor 10, is provided using hydraulic motor 10
Power is driven, so that the security performance of water pump is improved, to can satisfy the mating of amphibious equipment relative to motor driven
Demand.
More specifically, as shown in Figure 1, offer the accommodating cavity 31 for accommodating hydraulic motor 10 on fixed bracket 25,
Using fixed bracket 25 to provide support fixed effect to hydraulic motor 10, so that the mounting structure of hydraulic motor 10 is more firm
It leans on, hydraulic motor 10 enters accommodating cavity 31, protrudes into main shaft 11 in accommodating cavity 31, so that the output of main shaft 11 and hydraulic motor 10
Axis connection, so that hydraulic motor 10 drives the rotation of its output shaft, main shaft 11 is rotated with the output shaft synchronous of hydraulic motor 10, is helped
In raising working efficiency.
More specific embodiment be have as shown in Figure 1, 2, on impeller 12 along the axially extending impeller of the impeller 12 into
Mouthfuls 32 and along multiple impeller outlets 33 that the impeller 12 radially extends, it is connected to impeller inlet 32 with the realization of impeller outlet 33.Into
One step, unit fixed on water pump suction 34 and exit of pump 35 are offered on the pump housing 13, make unit fixed on water pump suction 34, pump chamber 17, exit of pump 35
Between realize connection, be connected to so that impeller outlet 33 and pump chamber 17 be made to realize, impeller inlet 32 is realized with unit fixed on water pump suction 34 and is connected to.
Liquid enters from unit fixed on water pump suction 34, and liquid enters inside impeller 12 from impeller inlet 32, and impeller 12 turns under the drive of main shaft 11
It is dynamic, its internal liquid is delivered to exit of pump 35, realizes the conveying of liquid.
Above embodiment is only preferred embodiments of the present invention, cannot be protected with this to limit the utility model
Range, the variation of any unsubstantiality that those skilled in the art is done on the basis of the utility model and replacement belong to
In the utility model range claimed.
Claims (9)
1. a kind of water pump prevents dry rotation structure, it is characterised in that：Including driving device, main shaft, impeller, the pump housing, pump cover, sealed support
And mechanical sealing assembly, the main shaft and driving device are sequentially connected, the impeller is fixed on main shaft, and the pump cover is fixed on
The pump chamber for accommodating liquid is formed on the pump housing, between the pump cover and the pump housing, the sealed support is fixed on pump cover, described
The mechanical seal chamber for accommodating oil liquid is formed between pump cover and sealed support, one end of the main shaft is located at mechanical seal chamber
In, the other end of the main shaft is rotatably installed on pump cover by mechanical sealing assembly and is protruded into pump chamber, the machinery
Seal assembly is built in mechanical seal chamber, and for preventing mechanical sealing assembly is dry from turning, the impeller is built in pump chamber.
2. water pump as described in claim 1 prevents dry rotation structure, it is characterised in that：It is set between the mechanical sealing assembly and main shaft
It is equipped with axle sleeve, is detachably connected between the axle sleeve and main shaft, O-ring seal, the O-ring seal are socketed on the main shaft
Between main shaft and axle sleeve.
3. water pump as claimed in claim 2 prevents dry rotation structure, it is characterised in that：The mechanical sealing assembly is double mechanical
Sealing element.
4. water pump as claimed in claim 3 prevents dry rotation structure, it is characterised in that：The mechanical sealing assembly includes rotating ring group
Part, the first stationary ring, the second stationary ring, the first sealing ring and the second sealing ring, the moving ring assembly are rotatably installed on axle sleeve,
First stationary ring and the second stationary ring are socketed on the two sides on axle sleeve and being located at moving ring assembly, and first stationary ring and pump cover are solid
It connects and is located in construction opening, first seal ring set is connected on the first stationary ring, and first sealing ring is quiet positioned at first
Between ring and pump cover, second seal ring set is connected on the second stationary ring.
5. water pump as claimed in claim 4 prevents dry rotation structure, it is characterised in that：The top of the sealed support has top cover,
Second stationary ring and top cover are affixed, and second sealing ring is fixed on the top cover between the second stationary ring and top cover
For fixing the fixation bracket of driving device, the bearing bore for accommodating rolling bearing group, the main shaft are formed on the top cover
It is rotatably installed in bearing bore by rolling bearing group, the main shaft protrudes into bearing bore and connect with driving device, the machine
Oil mirror is fixed between tool seal chamber and bearing bore, the oil mirror is located at the upside of the second stationary ring, for observing mechanical seal chamber
Oil level, the oil-drain pipe for discharging oil liquid is offered on the top cover, the oil-drain pipe is located at bearing bore and machinery is close
It seals between chamber.
6. water pump as claimed in claim 5 prevents dry rotation structure, it is characterised in that：The rolling bearing group includes upper bearing (metal) under
Bearing, the upper bearing (metal) and lower bearing are affixed with top cover, and the upper bearing (metal) is located at support bracket fastened lower section, the lower bearing position
Below upper bearing (metal), the oil-drain pipe is located at the downside of lower bearing.
7. water pump as claimed in claim 6 prevents dry rotation structure, it is characterised in that：The driving device is hydraulic motor.
8. water pump as claimed in claim 7 prevents dry rotation structure, it is characterised in that：It offers on the fixed bracket for accommodating
The output axis connection of the accommodating cavity of hydraulic motor, the main shaft and hydraulic motor.
9. water pump as described in claim 1 prevents dry rotation structure, it is characterised in that：Have on the impeller and axially prolongs along the impeller
The impeller inlet stretched and the multiple impeller outlets radially extended along the impeller, the impeller inlet is connected to impeller outlet, described
Offer unit fixed on water pump suction and exit of pump on the pump housing, the unit fixed on water pump suction, pump chamber are connected between exit of pump, and the impeller goes out
Mouth is connected to pump chamber, and the impeller inlet is connected to unit fixed on water pump suction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820533937.9U CN208106777U (en) | 2018-04-11 | 2018-04-11 | A kind of water pump prevents dry rotation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820533937.9U CN208106777U (en) | 2018-04-11 | 2018-04-11 | A kind of water pump prevents dry rotation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208106777U true CN208106777U (en) | 2018-11-16 |
Family
ID=64117689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820533937.9U Active CN208106777U (en) | 2018-04-11 | 2018-04-11 | A kind of water pump prevents dry rotation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208106777U (en) |
-
2018
- 2018-04-11 CN CN201820533937.9U patent/CN208106777U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Dry commentaries on classics structure is prevented to water pump Effective date of registration: 20200708 Granted publication date: 20181116 Pledgee: Leliu sub branch of Guangdong Shunde Rural Commercial Bank Co.,Ltd. Pledgor: GUANGDONG SHUNDA MARINE ENGINEERING Co.,Ltd. Registration number: Y2020980003898 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20181116 Pledgee: Leliu sub branch of Guangdong Shunde Rural Commercial Bank Co.,Ltd. Pledgor: GUANGDONG SHUNDA MARINE ENGINEERING Co.,Ltd. Registration number: Y2020980003898 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |