CN106089725B - For detecting the supercharging device of erasure effect - Google Patents
For detecting the supercharging device of erasure effect Download PDFInfo
- Publication number
- CN106089725B CN106089725B CN201610655227.9A CN201610655227A CN106089725B CN 106089725 B CN106089725 B CN 106089725B CN 201610655227 A CN201610655227 A CN 201610655227A CN 106089725 B CN106089725 B CN 106089725B
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- Prior art keywords
- casing
- baffle
- cooling water
- water cover
- screw
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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
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/04—Heating; Cooling; Heat insulation
- F04C29/042—Heating; Cooling; Heat insulation by injecting a fluid
Abstract
The invention discloses for detecting the supercharging device of erasure effect, including casing and working chamber, the surrounding of casing top surface raises up, setting screw hole at the top of projection portion, the cooling water cover to match with casing is provided with above casing, cooling water, which covers, is provided with through-hole, screw is inserted into across through-hole in screw hole, there are several baffles below cooling water cover, there is cavity in baffle, spring and support plate are provided in cavity, support plate lower section connect base cools down and is separately installed with inlet and outlet on the side that water cover is mutually parallel.When cooling down water cover on casing, the bottom of the baffle and chassis contact and baffle are perpendicular to the side of the projection portion.Baffle is mutually parallel, and adjacent baffle is connected on the different side of projection portion.The present apparatus is not only easy to clean, but also without continually disassembling and installing casing assembly from helical-lobe compressor, reduces the working strength of operating personnel, while also extend the service life of casing.
Description
Technical field
The present invention relates to air compressor fields, and in particular to for detecting the supercharging device of erasure effect.
Background technology
Air compressor is also known as air compressor machine, is the universal machine of modernization industry and the core equipment of pneumatic system,
The mechanical energy of motor or diesel engine is converted into gas pressure energy by air compressor, is reached by compressed gas and is improved gas pressure
Power or the purpose for conveying gas.Air compressor is widely used in steel, electric power, metallurgy, oil, mine, auto industry, aviation
The fields such as space flight and infrastructure.
There are many type of air compressor, are broadly divided into two major class of positive displacement compressor and speed mode air compressor machine.Wherein, hold
Product formula air compressor machine have volume can periodically variable working chamber, positive displacement compressor relies primarily on the work of its compressor host
The reciprocating member or rotary part of intracavitary periodically move so that suck working chamber etc. mass gas volume-diminished from
And improve pressure.Component according to making cycle movement in working chamber and changing working chamber volume is moved reciprocatingly or is done
Rotary motion, positive displacement compressor are divided into as reciprocating air compressor and swinging air compressor machine.
Swinging air compressor machine has rotary piston, mainly including screw-rod air compressor, slide vane compressor, vacuum pump, Roots
Air blower etc..Wherein, screw-rod air compressor is divided into as double-screw compressor and single screw compressor, and screw-rod air compressor passes through the moon
Precision-fit between male rotor and between rotor and body fuselage reduces gas backstreaming leakage, improves work efficiency,
In addition, screw-rod air compressor also has many advantages, such as with small vibration, low noise, without vulnerable part.
Screw rod, i.e. rotor can generate higher heat, traditional screw pneumatics in working chamber during rotary squeezing gas
Recirculated cooling water is provided in the enclosure wall of machine, cools down rotor when rotor and chassis contact so that rotor is suitably working
It works in temperature, high temperature is avoided to generate happening for equipment fault or shutdown.After a period of use, coolant flow channel is easy
Heap scaliness reduces the harder region of the cooling effect of cooling water, especially water quality, needs frequently to rush coolant flow channel
It washes, but traditional screw-rod air compressor is in thoroughly cleaning incrustation scale, it is necessary to first knockout machine housing assy, then unload lower casing assembly
Cooling water flow conduits shell and washing water runner, operate inconvenient, and continually by casing assembly from screw rod
Disassembly and installation not only increases the working strength of operating personnel in compressor, also reduces the service life of casing.
Invention content
The defects of technical problems to be solved by the invention are for conventional screw air compressor machine casing assembly, it is therefore intended that
Supercharging device for detecting erasure effect is provided, solves conventional screw air compressor machine in thoroughly cleaning cooling water flow conduits, no
It is only inconvenient, and continually casing assembly dismounted from screw air compressor not only increase operating personnel work it is strong
The problem of spending, also reducing casing service life.
The present invention is achieved through the following technical solutions：For detecting the supercharging device of erasure effect, including casing, in casing
Be provided with working chamber, the surrounding of casing top surface raises up, and is provided with screw hole at the top of projection portion, be provided with above casing with
The cooling water cover that casing matches, cooling water, which covers, is provided with through-hole, further includes screw, and screw is inserted into spiral shell across the through-hole
Kong Zhong is cooled down and is separately installed with inlet and outlet on the side that water cover is mutually parallel, and the downward vertical for cooling down water cover is fixed
There are several baffles, baffle interior is provided with cavity, and spring and support plate, lower spring end connection support plate are provided in the cavity
Top, the bottom end activity of support plate through the bottom end of baffle and are connected with pedestal, the bottom of pedestal and chassis contact.Traditional spiral shell
In use for some time, the easy heap scaliness of coolant flow channel set in enclosure wall reduces the cold of cooling water to rod-type air compressor machine
But effect needs to be rinsed coolant flow channel, and still, it is right in enclosure wall that the coolant flow channel of conventional screw air compressor machine has flowed through
The region of working chamber side or bottom is answered, so when cleaning coolant flow channel, is needed first by casing assembly from screw-rod air compressor
Middle taking-up, then the shell and washing water runner of cooling water flow conduits on lower casing are unloaded, it operates inconvenient, particularly
In the harder place of some water quality, operating personnel need continually to disassemble and install casing assembly from helical-lobe compressor, no
The working strength of operating personnel is increased only, also reduces the service life of casing.To solve the above-mentioned problems, the present invention provides
A kind of casing for screw-rod air compressor, the device include casing and be arranged in casing for accommodating negative and positive rotor
Working chamber, the surrounding of casing top surface raise up, and a groove are formed in the top surface of casing, in the side of projection portion, i.e. groove
Screw hole is provided at the top of wall, further includes the cooling water cover to match with the projection portion size of cabinet top, cooling water, which covers, to be set
Through-hole is equipped with, screw is inserted into across through-hole in screw hole, and cooling water cover is fixed on casing.It is several to cool down fixation below water cover
Perpendicular to the baffle of cooling water cover, cooling water cover is mounted on after cabinet top, baffle barrier cooling water cover and cabinet top it
Between space, formed cooling water flow conduits.The side of cooling water cover is provided with inlet and outlet, when cooling water cover is fixed on machine
When on shell, inlet and outlet connect exterior space and cool down the inner space of water cover.In order to increase the flowing of flow away from
From inlet and outlet are arranged on cooling water and cover the side being mutually parallel, it is preferred that inlet and outlet are close to cooling
The cornerwise position of water cover.Flow, by the barrier of baffle, flows out after water inlet enters to cooling water flow conduits from water outlet.
Compared with prior art, when needing to be rinsed coolant flow channel, without knockout machine housing assy, it is only necessary to unscrew screw, it will
Cooling water cover is removed, and then casing top surface and cooling water cover are cleaned and wipe incrustation scale off, cooling water cover is covered later, twists
Tight screw.Meanwhile the runner of the complicated bend relative to the setting of traditional casing inner wall, the casing top surface of the present apparatus is one
Groove structure is easily cleared up and wipes incrustation scale off, and is used to obstruct and forms the baffle plate setting of complicated coolant flow channel in cooling water
The bottom of lid can be rinsed baffle after cooling water cover is removed, can be splashed to screw-rod air compressor without the water for worrying to rinse
Other parts.The present apparatus is not only easy to clean, but also without continually casing assembly is dismantled and pacified from helical-lobe compressor
Dress, reduces the working strength of operating personnel, while also extend the service life of casing.In addition, in practice, it has been found that when
When cooling water cover is fixed on casing, sometimes since screw is not tightened or tightened to screw, still baffle bottom does not have still
Have and chassis contact, cause to have the gap between baffle and casing, when flow is flowed through from gap, since runner becomes very suddenly
Narrow, with speed quickly by gap, this part flow generates friction with baffle and casing and generates heat, reduces cold flow
But the cooling effect of water；Simultaneously as flow shortens time of the cooling water in coolant flow channel not according to flow passage,
Also reduce cooling effect.To solve the above-mentioned problems, cavity is provided in the bottom of baffle, spring and support are set in cavity
Plate, spring upper end are connect with cavity top, lower spring end and support plate upper-end contact, support plate lower end connect base.Setting gear
Cooling water cover is fixed on by the slightly greater height than cooling water base face of plate top to pedestal bottom end to the height between casing top surface
After on casing, pedestal bottom end and chassis contact, while screw is tightened, the spring contraction in cavity, after tightening screw, pedestal
Upper end is supported the bounce for the spring that plate transmits, lower section by casing support force, it is no longer seamed between pedestal and casing
Gap avoids cooling water and is flowed through from gap；Moreover, if when screw is tightened without worry baffle length slightly
When long, twist tightly damage very much baffle bottom and casing surface.
Further, when cooling down water cover on casing, the baffle is perpendicular to the side of the projection portion.Gear
Plate is perpendicular to the side of projection portion so that it is flowed through in the gap that flow will not be between baffle and the side of projection portion, and
It is that the inner wall of enclosure space formed along baffle and casing with cooling water cover flows so that the flowing of flow more has order
Sequence, it is ensured that the cooling effect of cooling water increases flowing time of the cooling water in runner.In addition, traditional coolant flow channel
For warp architecture, after incrustation scale can be formed any position in runner, but baffle is vertically connected on the projection portion of casing top surface, water
The corner flowed between the turning contacted in baffle with inner wall or inner wall forms vortex, along with the work of flow impact baffle
With incrustation scale easily is separated from the water out, i.e., incrustation scale is mainly formed around the corner, and the other positions in runner except turning are
The main position for exchanging heat, these positions are not easy to form incrustation scale, extend the cleaning frequency.
Further, baffle is mutually parallel, and adjacent baffle is connected on the different side of projection portion.It is set by above-mentioned
Meter, coolant flow channel have been isolated into S-shaped runner, and flow flows in S-shaped runner, not only so that the runner of flow is more regular,
And residence time of the flow in coolant flow channel is increased, further improve cooling effect.
Further, it is first gradually increased, then be gradually reduced along the distance between the direction vertical with baffle, adjacent screen.
Because the main effect of coolant flow channel is the screw rod of cooling work intracavitary, and the vertical shortest distance position of working chamber and coolant flow channel
In the intermediate position of coolant flow channel.Shorten distance of the coolant flow channel close to the adjacent screen of both sides, increase coolant flow channel in
The distance of the adjacent screen of the heart, can increase cooling water rest on the time in the shortest coolant flow channel of screw rod vertical distance,
So that more abundant to the cooling of screw rod.Simultaneously as the runner near inlet and outlet is relatively narrow, cooling is increased
The flow velocity of water avoids temperature when cooling water flows through the runner above screw rod and has built up, improves cooling efficiency.
Further, it is provided with temperature monitoring on baffle.It, can be in coolant flow channel by set temperature monitor
Cooling water temperature is monitored in real time, and when temperature is more than setting value, temperature monitoring sends out alarm to monitoring system, reminds work
Make personnel, the temperature of cooling water is higher.There are two types of situations at this time, if cooling water self-temperature is higher, then need staff
Reduce the temperature of input cooling water；If the screw rod rotation in working chamber is broken down, then need to shut down progress inspection and maintenance.
Temperature monitoring also ensures the safe to use of air compressor machine while ensuring cooling efficiency.
Further, the bottom end of pedestal is equipped with gasket.Gasket can be with further such that pedestal be combined tightly with casing
It is close, cooling water is avoided to be flowed through from gap between the two.
Further, the top setting of casing protrusion part is fluted, and the cooling water, which covers, to be provided with and groove phase contract
The boss of conjunction is provided with the gasket to match on boss.Top setting groove in the protrusion part of casing top surface, while
Cooling water covers the boss that setting mutually agrees with groove, and is equipped with gasket in the contact surface of groove and boss so that cold
But the combination of water cover and casing is even closer, prevents cooling water from being flowed out from the gap between cooling water cover and casing, and damage is empty
The rest part of press.
Further, gasket is made of nitrile rubber.Nitrile rubber not only acts as the effect of sealing waterproof, moreover it is possible to play
The effect of buffering avoids casing from mutually being scraped with pedestal, groove and boss when combining, while nitrile rubber also has centainly
Frictional force.
Further, water inlet is connected with water softening device.Water softening device be mainly used for remove water in calcium carbonate and
Magnesium carbonate, particularly in the harder region of some water quality, water softening device can reduce what cooling water was formed in coolant flow channel
Amount of scale extends the cleaning frequency of coolant flow channel.
Compared with prior art, the present invention it has the following advantages and advantages：
1st, the present invention is raised up by the surrounding in casing top surface, is formed a groove in the top surface of casing, is also set up
There is the cooling water cover that the projection portion size with cabinet top matches, fix several baffles below cooling water cover, cool down water cover
After cabinet top, cool down and form cooling water flow conduits between water cover and casing.The present apparatus is not only easy to clean, Er Qiewu
Continually casing assembly from helical-lobe compressor need to be disassembled and installed, reduce the working strength of operating personnel, while also prolonged
The service life of casing is grown；
2nd, relative to the runner of the complicated bend of traditional casing inner wall setting, the casing top surface of the present apparatus is a groove knot
Structure is easily cleared up and wipes incrustation scale off, and is used to obstruct and forms the baffle plate setting of complicated coolant flow channel at the bottom of cooling water cover
Portion, will cooling water cover remove after baffle can be rinsed, without worry rinse water can splash to screw-rod air compressor other
Part；
3rd, the slightly greater height than cooling water base face of present invention setting baffle top to pedestal bottom end is between casing top surface
Height, will cooling water cover be fixed on casing after, pedestal bottom end and chassis contact, while screw is tightened, in cavity
Spring contraction, after tightening screw, pedestal upper end is supported the bounce for the spring that plate transmits, and lower section is supported by casing
Power no longer has the gap between pedestal and casing, avoids cooling water and is flowed through from gap, causes runner shortening and cooling water temperature
It is raised to so that the problem of cooling effect reduces；
4th, the present invention shortens distance of the coolant flow channel close to the adjacent screen of both sides, increases coolant flow channel and leans on paracentral phase
The distance of adjacent baffle can increase cooling water and rest on and the time in the shortest coolant flow channel of screw rod vertical distance so that is right
The cooling of screw rod is more abundant.Simultaneously as the runner near inlet and outlet is relatively narrow, the stream of cooling water is increased
Speed avoids temperature when cooling water flows through the runner above screw rod and has built up, improves cooling efficiency；
5th, the present invention is provided with temperature monitoring, and the cooling water temperature in coolant flow channel can be monitored in real time, when
When temperature is more than setting value, temperature monitoring sends out alarm to monitoring system, reminds staff, and the temperature of cooling water is higher,
The safe to use of air compressor machine is also ensured while not only ensuring cooling efficiency.
Description of the drawings
Attached drawing described herein is used for providing further understanding the embodiment of the present invention, forms one of the application
Point, do not form the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the bottom view for cooling down water cover；
Fig. 3 is the structure diagram of baffle.
Label and corresponding parts title in attached drawing：
1- casings, 2- working chambers, 3- cooling water covers, 4- water inlets, 5- screws, 6- water outlets, 7- baffles, 8- screw holes, 9-
Temperature monitoring, 10- pedestals, 11- springs, 12- support plates.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment
As shown in Figure 1, Figure 2 and Figure 3, the present invention is the supercharging device for detecting erasure effect, including casing 1, casing 1
Working chamber 2 is inside provided with, the surrounding of 1 top surface of casing raises up, and screw hole 8 is provided at the top of projection portion, and 1 top of casing is set
The cooling water cover 3 to match with casing 1 is equipped with, cools down and is provided with through-hole on water cover 3, further includes screw 5, screw 5 passes through described
Through-hole is inserted into screw hole 8, and water inlet 4 and water outlet 6, cooling water are separately installed on the side that cooling water cover 3 is mutually parallel
The downward vertical of lid 3 is fixed with several baffles 7, and baffle 7 is internally provided with cavity, spring 11 and support plate are provided in cavity
12,11 lower end of spring, 12 top of connection support plate, the bottom end activity of support plate 12 through the bottom end of baffle 7 and is connected with pedestal
10, the bottom of pedestal 10 is contacted with casing 1.When cooling down water cover on casing, baffle 7 is perpendicular to the projection portion
Side.Baffle 7 is mutually parallel, and adjacent baffle 7 is connected on the different side of projection portion.The edge direction vertical with baffle 7,
The distance between adjacent screen 7 first gradually increases, then is gradually reduced.Temperature monitoring 9 is provided on baffle 7.The bottom of pedestal 10
End is equipped with gasket.The top setting that casing 1 protrudes part is fluted, cools down and is provided with what is mutually agreed with groove on water cover 3
Boss is provided with the gasket to match on boss.Gasket is made of nitrile rubber.Water inlet 4 is connected with water softening device.
When needing to be rinsed coolant flow channel, without knockout machine housing assy, it is only necessary to unscrew screw 5, cooling water cover 3 is removed,
Then the runner of 1 top surface of wiping casing, the relatively complicated bend of 1 inner wall of traditional casing setting, 1 top surface of casing of the present apparatus is one
A groove structure is easily cleared up and wipes incrustation scale off, and baffle 7 can be rinsed after cooling water cover 3 is removed and wipe incrustation scale off, it
After cover cooling water cover 3,7 bottom end of baffle is contacted with casing 1, and while screw 5 are tightened, the spring 11 in cavity is shunk, stubborn
After tight screw 5,10 upper end of pedestal is supported the bounce of spring 11 that plate 12 transmits, and lower section is by the support force of casing 1, bottom
It is no longer had the gap between seat 10 and casing 1, avoids and flowed through in gap of the cooling water between pedestal 10 and casing 1, twisted later
Tight screw 5.The present apparatus is not only easy to clean, but also without continually casing assembly is dismantled and pacified from helical-lobe compressor
Dress, reduces the working strength of operating personnel, while also extend the service life of casing.
Above-described specific embodiment has carried out the purpose of the present invention, technical solution and advantageous effect further
It is described in detail, it should be understood that the foregoing is merely the specific embodiment of the present invention, is not intended to limit the present invention
Protection domain, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (6)
1. for detecting the supercharging device of erasure effect, including casing (1), working chamber (2) is provided in the casing (1),
It is characterized in that, the surrounding of casing (1) top surface raises up, and screw hole (8), casing are provided at the top of the projection portion
(1) top is provided with the cooling water cover (3) to match with casing (1), is provided with through-hole on the cooling water cover (3), further includes
Screw (5), the screw (5) are inserted into across the through-hole in screw hole (8), are divided on the side that cooling water cover (3) is mutually parallel
Water inlet (4) and water outlet (6) are not installed, the downward vertical of cooling water cover (3) is fixed with several baffles (7), the baffle
(7) cavity is internally provided with, spring (11) and support plate (12), spring (11) the lower end connection branch are provided in the cavity
Fagging (12) top, the bottom end activity of support plate (12) through the bottom end of baffle (7) and are connected with pedestal (10), the pedestal
(10) bottom is contacted with casing (1)；When cooling down water cover (3) on casing (1), the baffle (7) is perpendicular to described
The side of projection portion；The baffle (7) is mutually parallel, and adjacent baffle (7) is connected on the different side of projection portion；Institute
The bottom end for stating pedestal (10) is equipped with gasket.
2. the supercharging device according to claim 1 for being used to detect erasure effect, which is characterized in that hang down along with baffle (7)
The distance between straight direction, adjacent screen (7) first gradually increases, then be gradually reduced.
3. the supercharging device according to claim 2 for being used to detect erasure effect, which is characterized in that on the baffle (7)
It is provided with temperature monitoring (9).
4. the supercharging device according to claim 1 for being used to detect erasure effect, which is characterized in that the casing (1) is convex
The top setting for going out part is fluted, is provided with the boss mutually agreed with groove on the cooling water cover (3), is provided on boss
The gasket to match.
5. the supercharging device according to claim 4 for being used to detect erasure effect, which is characterized in that the gasket is by fourth
Nitrile rubber is made.
6. the supercharging device according to claim 1 for being used to detect erasure effect, which is characterized in that the water inlet (4)
It is connected with water softening device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610655227.9A CN106089725B (en) | 2016-08-11 | 2016-08-11 | For detecting the supercharging device of erasure effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610655227.9A CN106089725B (en) | 2016-08-11 | 2016-08-11 | For detecting the supercharging device of erasure effect |
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| Publication Number | Publication Date |
|---|---|
| CN106089725A CN106089725A (en) | 2016-11-09 |
| CN106089725B true CN106089725B (en) | 2018-06-26 |
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ID=57456190
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610655227.9A Active CN106089725B (en) | 2016-08-11 | 2016-08-11 | For detecting the supercharging device of erasure effect |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523320B (en) * | 2017-01-13 | 2018-08-17 | 厦门闳图盛道科技有限公司 | A kind of oil-free silent air compressor of low energy consumption |
| CN107869459A (en) * | 2017-11-14 | 2018-04-03 | 美的集团股份有限公司 | Water pump |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4808095A (en) * | 1987-07-01 | 1989-02-28 | Kabushiki Kaisha Kobe Seiko Sho | Screw vacuum pump |
| US6203297B1 (en) * | 1999-09-29 | 2001-03-20 | Dresser Equipment Group, Inc. | Fluid flow device with improved cooling system and method for cooling a vacuum pump |
| DE102010064388A1 (en) * | 2010-02-18 | 2011-08-18 | Steffens, Ralf, Dr. Ing., 73728 | Drying-compressing two-shaft rotation positive displacement machine e.g. spindle compressor, for e.g. compressing gaseous conveying media, has intake-sided and gear box-sided spindle main rotor shaft parts made of sustainable material |
| CN205937130U (en) * | 2016-08-11 | 2017-02-08 | 成都陵川常友汽车部件制造有限公司 | A supercharging equipment for testing noise cancelling effect |
-
2016
- 2016-08-11 CN CN201610655227.9A patent/CN106089725B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4808095A (en) * | 1987-07-01 | 1989-02-28 | Kabushiki Kaisha Kobe Seiko Sho | Screw vacuum pump |
| US6203297B1 (en) * | 1999-09-29 | 2001-03-20 | Dresser Equipment Group, Inc. | Fluid flow device with improved cooling system and method for cooling a vacuum pump |
| DE102010064388A1 (en) * | 2010-02-18 | 2011-08-18 | Steffens, Ralf, Dr. Ing., 73728 | Drying-compressing two-shaft rotation positive displacement machine e.g. spindle compressor, for e.g. compressing gaseous conveying media, has intake-sided and gear box-sided spindle main rotor shaft parts made of sustainable material |
| CN205937130U (en) * | 2016-08-11 | 2017-02-08 | 成都陵川常友汽车部件制造有限公司 | A supercharging equipment for testing noise cancelling effect |
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| Publication number | Publication date |
|---|---|
| CN106089725A (en) | 2016-11-09 |
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Effective date of registration: 20230331 Address after: Room 101, building 1, 120 Lianfeng new road, Dalingshan Town, Dongguan, Guangdong 523000 Patentee after: DONGGUAN RONGXING HARDWARE PRODUCTS Co.,Ltd. Address before: No. 147, Qingjiang Middle Road, Qingbaijiang District, Chengdu, Sichuan 610000 (in Chengdu Europe Entrepreneurship Yard) Patentee before: Chengdu Zhirong Zhichuang Intellectual Property Operation Co.,Ltd. |
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