CN103727263B - A kind of non-backpressure type liquid level control - Google Patents
A kind of non-backpressure type liquid level control Download PDFInfo
- Publication number
- CN103727263B CN103727263B CN201410020124.6A CN201410020124A CN103727263B CN 103727263 B CN103727263 B CN 103727263B CN 201410020124 A CN201410020124 A CN 201410020124A CN 103727263 B CN103727263 B CN 103727263B
- Authority
- CN
- China
- Prior art keywords
- hole
- main valve
- liquid level
- floating drum
- type liquid
- 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.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
- F16K31/1262—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like one side of the diaphragm being spring loaded
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/18—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float
- F16K31/34—Actuating devices; Operating means; Releasing devices actuated by fluid actuated by a float acting on pilot valve controlling the cut-off apparatus
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Float Valves (AREA)
Abstract
A kind of non-backpressure type liquid level control, including main valve, floating drum pilot valve, the first conduit and the second conduit；Main valve includes main valve inlet end, Main valve outlet end, main valve epicoele and moving parts, and floating drum pilot valve includes valve seat, flap, floating drum, float lever and connecting rod, first through hole, the second through hole and third through-hole are provided with valve seat；Fourth hole, fifth hole, the 6th through hole and the 7th through hole are provided with flap；First through hole is connected by the first conduit with main valve epicoele, and the second through hole is connected by the second conduit with main valve inlet end, and third through-hole is directly connected with ambient atmosphere；Water level top dead centre and water level lower dead center are provided with float lever, i.e. the present invention on floating drum pilot valve by realizing two-position three way switching function, so as to be controlled to liquid level in liquid collector on the premise of without back pressure realizing, simplify equipment complexity simultaneously, it has been finally reached and has facilitated equipment I＆M, has reduced the purposes such as equipment cost.
Description
Technical field
The present invention relates to Liquid level field, more particularly to a kind of non-backpressure type liquid level control.
Background technology
In all kinds of fluid systems used in everyday, especially in the liquid collectors such as water tower, oil depot, people usually need
Certain control is carried out to liquid level；Such as, when liquid level rises to certain height, system needs realization to be automatically stopped to water
Supply liquid in the liquid collectors such as tower, oil depot；And when liquid level drops to certain height, system then needs realization to automatically open up
Liquid-supplying system, and to liquid make-up in the liquid collectors such as water tower, oil depot.
In fluid level control device used in everyday, more popular fluid level control valve is as shown in figure 1, this kind of control valve is logical
Cross float ball guided valve 12 to drive main valve 11, so that the opening or closure of control bound 11, this kind of control valve has can split peace
Dress, so as to save installing space, while having the advantages that highest liquid level is big with the adjustable extent of minimum liquid level；But work as liquid level
After decline, i.e., float ball guided valve 12 is opened, and main valve 11 is opened and in the liquid-storage systems such as water tower during fluid infusion, due to the epicoele of main valve 11
Partial pressure cannot all release, i.e., in the presence of certain back pressure, cause main valve 11 to open completely, result in fluid generation
Partial pressure loses, and then causes invisible energy ezpenditure.
In order to solve above-mentioned back pressure problems, people increased two-position three way switch, this two on the basis of said apparatus
The structure of three-way cock as shown in Fig. 2 including upper flap 21 and lower Disc 22, its principle be using upper flap 21 upper pressure with
Difference between lower pressure promotes two flaps to be moved, so as to realize the effect of two-position three way.
The fluid level control device structure after two-position three way switch be increased as shown in figure 3, by main valve inlet end 31 and main valve
Epicoele 32 is attached with two-position three way switch 33 respectively；
When pilot valve 34 is closed, the top pressure value and pressure below of upper flap in two-position three way switch 33
Value is identical, and now main valve epicoele 32 is connected with main valve inlet end 31；
When pilot valve 34 is in open mode, the top pressure value of upper flap is pressed less than lower section in two-position three way switch 33
Force value, upper flap promotes motion upwards by pressure differential, so as to realize that main valve epicoele 32 is connected with ambient atmosphere, and then reaches master
Purpose without back pressure in valve epicoele 32.
Although this kind of fluid level control device that increased two-position three way switch can solve the problem that above-mentioned main valve epicoele inside partial pressure
The problem that power cannot all release, but due to increased two-position three way switch, and it is integrally increasingly complex to result in equipment, while peace
It is increasingly complex that dress and maintenance work also become, while increased production cost, is unfavorable for real-life practicality.
The content of the invention
In order to solve the above problems, the present invention provides a kind of non-backpressure type liquid level control, including main valve, floating drum guide
Valve, the first conduit and the second conduit；The main valve includes main valve inlet end, Main valve outlet end, main valve epicoele and exercise group
Part, the floating drum pilot valve includes valve seat, flap, floating drum, float lever and connecting rod；Wherein, is provided with the valve seat
One through hole, the second through hole and third through-hole, any two through hole in the first through hole, the second through hole and third through-hole
Between non-interconnected；Fourth hole, fifth hole, the 6th through hole and the 7th through hole, the described 4th are provided with the flap
Non-interconnected between through hole and fifth hole, the fourth hole is connected with the 7th through hole, the fifth hole and the 6th through hole
It is connected；The flap is arranged between valve seat and connecting rod and can carry out the rotation of certain angle, and the flap is by connection
Bar is attached with float lever；
The first through hole is connected by the first conduit with main valve epicoele, and second through hole passes through the second conduit and master
Valve entrance point is connected, and the third through-hole is directly connected with ambient atmosphere；
Water level top dead centre and water level lower dead center are provided with the float lever, the float lever passes through floating drum in vertical direction
Central area, the floating drum can enter line slip between water level top dead centre and water level lower dead center.
In said apparatus, the first through hole is consistent with the pore size of fourth hole, fifth hole, and described second leads to
The pore size of the through holes of Kong Yu six is consistent, and the third through-hole is consistent with the size of the 7th through hole.
In said apparatus, the third through-hole can be also connected by conduit with Main valve outlet end.
In said apparatus, the water level top dead centre and water level lower dead center are free-standing structure.
In said apparatus, the floating drum pilot valve also includes counterweight block.
In said apparatus, the moving parts include moving person, barrier film and spring structure.
In said apparatus, the moving person lower end is provided with yielding rubber；
In said apparatus, the material of the barrier film is rubber.
In said apparatus, the spring structure is arranged at the top of moving person.
In said apparatus, the edge of the barrier film is provided with some holes.
The advantages of the present invention are：The invention provides a kind of non-backpressure type liquid level control, by
Two-position three way switching function is realized on floating drum pilot valve, so as to realize on the premise of without back pressure to liquid in liquid collector
While position is controlled, equipment complexity is simplified, be finally reached and facilitated equipment I＆M, reduce equipment cost etc.
Purpose.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
Other accompanying drawings are obtained with according to these accompanying drawings.
Fig. 1 is the structural representation of fluid level control device in the prior art；
Fig. 2 is the structural representation of two-position three way switch；
Fig. 3 is the structural representation in the prior art without back pressure type fluid level control device；
Fig. 4 is the structural representation without back pressure type fluid level control device in the present invention；
Fig. 5 is the structural representation of moving parts in main valve in the present invention；
Fig. 6 is the structural representation of floating drum pilot valve in the present invention；
Fig. 7 is the section B-B schematic diagram of floating drum pilot valve part in the present invention；
Fig. 8 is the side structure schematic view of valve seat in Fig. 7；
Fig. 9 is the side structure schematic view of flap in Fig. 7；
Figure 10 is the side structure schematic view of valve seat and flap when main valve is closed；
The side structure schematic view of valve seat and flap when Figure 11 is main valve open.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the invention is further described.Following examples are only
For clearly illustrating technical scheme, and can not be limited the scope of the invention with this.
Fig. 4 is the structural representation without back pressure type fluid level control device in the present invention；As shown in figure 4, this invention describes
A kind of non-backpressure type liquid level control, including main valve 41, floating drum pilot valve 42, the first conduit 43 and the second conduit 44；
Wherein, above-mentioned main valve 41 includes main valve inlet end 411, Main valve outlet end 412, main valve epicoele 413 and motion
Component 414；Main valve inlet end 411 and outside liquid source（Do not marked in figure）It is connected, and as the liquid input of main valve 41
Mouthful；Main valve outlet end 412 passes through pipeline（Do not marked in figure）It is connected with liquid collector 45, and by above-mentioned pipeline to liquid collecting
Conveying liquid in device 45；
Moving parts 414 are arranged at the inside of main valve 41, and its concrete structure is as shown in figure 5, including moving person 51, isolation
Film 52 and spring structure（Do not marked in figure）, wherein, barrier film 52 is quality of rubber materials, if the edge of barrier film 52 is provided with
Dry pore space structure, the effect of barrier film 52 is to keep apart main valve epicoele 413 and lower section, forms pressure differential with this to promote motion
Component 414 is moved upwards, so as to realize the opening action of main valve 41；Spring structure is arranged at the top of moving parts 414, when every
From the top pressure value of film 52 it is identical with pressure below value when, acted on by the elastic force of spring structure 53 and promote moving parts 414
Move downward, so that 41 closing motion is controlled, meanwhile, yielding rubber 53 is additionally provided with the lower section of moving person 51, should
Yielding rubber 53 can play certain buffering effect when main valve 41 is closed, to increase the service life of main valve 41.
Further, the structure of floating drum pilot valve 42 is as shown in fig. 6, including valve seat 61, flap 62, floating drum 421, float lever
422 and connecting rod 423；Wherein, floating drum 421 is barrel-shaped structure, to reduce by Za Wu Gua Pan in liquid collector 45
Possibility；Water level top dead centre 4221 and water level lower dead center 4222 are provided with float lever 422, two stops are all adjustable
Structure, so that user can come to be adjusted setting to peak level and lowest water level according to actual needs；Float lever 422 is in vertical
Floating drum 421 is arranged on water level top dead centre 4221 and water level lower dead center 4222 to through the central area of floating drum 421 by Nogata
Between so that floating drum 421 can enter line slip between water level top dead centre 4221 and water level lower dead center 4222；The flap 62 leads to
Cross connecting rod 423 to be attached with float lever 422, such that it is able to realize flap 62 by the lengthwise movement of connecting rod 423
Rotary motion；Meanwhile, above-mentioned floating drum pilot valve 42 is additionally provided with counterweight block 63, and the counterweight block 63 can be former by lever
Manage to realize the control to float lever 422.
Further, between valve seat 61, flap 62 and connecting rod 423 annexation is as shown in fig. 7, flap 62 is located at
Between valve seat 61 and connecting rod 423, and flap 62 rotates in certain angle；
Wherein, the side-looking structure of above-mentioned valve seat 61 is as shown in figure 8, be provided with first through hole 611, the second through hole 612
And third through-hole 613；Wherein, first through hole 611 is connected by the first conduit 43 with main valve epicoele 413, and described second leads to
Hole 612 is connected by the second conduit 44 with main valve inlet end 411, and the third through-hole 613 is directly connected with ambient atmosphere,
Non-conduction knot is between any two through hole in above-mentioned first through hole 611, the second through hole 612 and third through-hole 613
Structure, and the distance between the second through hole 612 and first through hole 611 are with the distance between third through-hole 613 and first through hole 611 phase
Deng.
Preferably, above-mentioned third through-hole 613 can be also connected by conduit with Main valve outlet end 412, to reach saving
With the effect of water.
Above-mentioned flap 62 is arranged between valve seat 61 and connecting rod 423 and can carry out the rotation of certain angle, its side-looking knot
Structure is as shown in figure 9, be provided with fourth hole 6111, fifth hole 6112, the 6th through hole 6121 and the 7th through hole on flap 62
6131, it is non-conduction structure, the fourth hole 6111 and the 7th between above-mentioned fourth hole 6111 and fifth hole 6112
It is conducting structure between in through hole 6131, is conducting structure between the through hole 6121 of the fifth hole 6112 and the 6th.
Preferably, above-mentioned first through hole 611 is consistent with the pore size of fourth hole 6111, fifth hole 6112,
Second through hole 612 is consistent with the pore size of the 6th through hole 6121, the size phase one of third through-hole 613 and the 7th through hole 6131
Cause, avoided when liquid is transmitted with this, the unnecessary liquid caused because bore hole size is different flows out.
In real work, when the liquid in liquid collector 45 is sufficient and floating drum 421 is reached on the water level being manually set
During stop 4221, now first through hole 611 is turned on fifth hole 6112, and the second through hole 612 is turned on the 6th through hole 6121, from
And realize that main valve epicoele 413 is conducted with main valve inlet end 411, i.e., the top pressure of the barrier film 52 in active main body 51 is with
Square pressure is equal, and main valve 41 is closed not to infusion fluid in liquid collector 45；
When the liquid in liquid collector 45 reduces, flap 62 will do rotation fortune with the lengthwise movement of float lever 422
Dynamic, when floating drum 421 reaches the water level lower dead center 4222 being manually set, first through hole 611 is turned on fourth hole 6111, the
Three through holes 613 are turned on the 7th through hole 6131, so as to realize that main valve epicoele 413 and ambient atmosphere are conducted, and then are realized master
Pressure in valve epicoele main valve epicoele 413 is all emptied, and has been finally reached the purpose without back pressure；Simultaneously as active main body 51
On barrier film 52 pressure below be more than top pressure（Now the top pressure of barrier film 52 is zero）, the pressure differential for being formed
Moving parts 414 can be promoted to do motion upwards, that is, realize the opening of main valve 41 so that outside liquid can by main valve and
Corresponding pipeline finally realizes the control to liquid level to infusion fluid in liquid collector 45.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Within god and principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (10)
1. a kind of non-backpressure type liquid level control, including main valve, floating drum pilot valve, the first conduit and the second conduit；The master
Valve include main valve inlet end, Main valve outlet end, main valve epicoele and moving parts, the floating drum pilot valve include valve seat, flap,
Floating drum, float lever and connecting rod；Characterized in that, being provided with first through hole, the second through hole and threeway on the valve seat
Hole, equal non-interconnected between any two through hole in the first through hole, the second through hole and third through-hole；Set on the flap
It is equipped with fourth hole, fifth hole, the 6th through hole and the 7th through hole, non-interconnected between the fourth hole and fifth hole,
The fourth hole is connected with the 7th through hole, and the fifth hole is connected with the 6th through hole；The flap is arranged at valve seat
Between connecting rod and the rotation of certain angle can be carried out, the flap is attached by connecting rod with float lever；
The first through hole is connected by the first conduit with main valve epicoele, and second through hole is entered by the second conduit and main valve
Mouth end is connected, and the third through-hole is directly connected with ambient atmosphere；
The floating drum is cylinder-like structure, and water level top dead centre and water level lower dead center, the float lever are provided with the float lever
In vertical direction through the central area of floating drum, the floating drum can enter line slip between water level top dead centre and water level lower dead center.
2. a kind of non-backpressure type liquid level control as claimed in claim 1, it is characterised in that the first through hole and four-way
Hole, fifth hole pore size it is consistent, second through hole is consistent with the pore size of the 6th through hole, the threeway
The size of the through holes of Kong Yu seven is consistent.
3. a kind of non-backpressure type liquid level control as claimed in claim 1, it is characterised in that the third through-hole can also pass through
Conduit is connected with Main valve outlet end.
4. a kind of non-backpressure type liquid level control as claimed in claim 1, it is characterised in that the water level top dead centre and water level
Lower dead center is free-standing structure.
5. a kind of non-backpressure type liquid level control as claimed in claim 1, it is characterised in that the floating drum pilot valve also includes
Counterweight block.
6. a kind of non-backpressure type liquid level control as claimed in claim 1, it is characterised in that the moving parts include motion
Main body, barrier film and spring structure.
7. a kind of non-backpressure type liquid level control as claimed in claim 6, it is characterised in that the moving person lower end is set
There is yielding rubber.
8. a kind of non-backpressure type liquid level control as claimed in claim 6, it is characterised in that the material of the barrier film is rubber
Glue.
9. a kind of non-backpressure type liquid level control as claimed in claim 6, it is characterised in that the spring structure is arranged at fortune
The top of dynamic main body.
10. a kind of non-backpressure type liquid level control as claimed in claim 7, it is characterised in that the edge of the barrier film sets
It is equipped with some holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410020124.6A CN103727263B (en) | 2014-01-17 | 2014-01-17 | A kind of non-backpressure type liquid level control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410020124.6A CN103727263B (en) | 2014-01-17 | 2014-01-17 | A kind of non-backpressure type liquid level control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103727263A CN103727263A (en) | 2014-04-16 |
| CN103727263B true CN103727263B (en) | 2017-05-31 |
Family
ID=50451478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410020124.6A Active CN103727263B (en) | 2014-01-17 | 2014-01-17 | A kind of non-backpressure type liquid level control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103727263B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2426044Y (en) * | 2000-05-17 | 2001-04-04 | 上海正丰阀门制造有限公司 | Piston type remote controlled float ball valve |
| CN2596117Y (en) * | 2002-12-20 | 2003-12-31 | 刘强荣 | Safety and quick shutting-off type float valve |
| CN101788069A (en) * | 2010-03-10 | 2010-07-28 | 何际跃 | Back pressure type water power and water level control valve |
| CN202176808U (en) * | 2011-08-25 | 2012-03-28 | 开维喜阀门集团有限公司 | Zero-pressure opening remote control float valve |
| CN203670895U (en) * | 2014-01-17 | 2014-06-25 | 上海康措流体控制有限公司 | Non-back-pressure type liquid level control valve |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2188148Y (en) * | 1994-02-21 | 1995-01-25 | 苏恩远 | Diaphragm water level controlling valve |
| IL112177A (en) * | 1994-12-29 | 1998-12-06 | Dorot Valve Manufacturers | Differential float control valve |
-
2014
- 2014-01-17 CN CN201410020124.6A patent/CN103727263B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2426044Y (en) * | 2000-05-17 | 2001-04-04 | 上海正丰阀门制造有限公司 | Piston type remote controlled float ball valve |
| CN2596117Y (en) * | 2002-12-20 | 2003-12-31 | 刘强荣 | Safety and quick shutting-off type float valve |
| CN101788069A (en) * | 2010-03-10 | 2010-07-28 | 何际跃 | Back pressure type water power and water level control valve |
| CN202176808U (en) * | 2011-08-25 | 2012-03-28 | 开维喜阀门集团有限公司 | Zero-pressure opening remote control float valve |
| CN203670895U (en) * | 2014-01-17 | 2014-06-25 | 上海康措流体控制有限公司 | Non-back-pressure type liquid level control valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103727263A (en) | 2014-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103727263B (en) | A kind of non-backpressure type liquid level control | |
| CN202463813U (en) | Intelligent water feeding device of passenger train | |
| CN203670895U (en) | Non-back-pressure type liquid level control valve | |
| CN206035932U (en) | Take gyration switching -over cushion valve of double overflow valve | |
| CN102393618B (en) | Powder feeding device of copier | |
| CN109584687B (en) | A kind of physics teaching visually demonstrates teaching aid and demenstration method | |
| CN103127721A (en) | Seesaw | |
| CN206686823U (en) | Energy-saving is from water-drawing type water supply installation | |
| CN205800265U (en) | A kind of hydraulic system of sewage solid waste hydraulic press | |
| CN104481021A (en) | Sewage collection device and method having automatic drainage function | |
| CN206547605U (en) | A kind of poultry automatic water supply device | |
| CN206672474U (en) | A kind of easy device for demonstrating Coriolis force | |
| CN208195147U (en) | A kind of pipe dredging device | |
| CN204318561U (en) | Quantitative oil bottle | |
| CN206531674U (en) | A kind of sewage sampling device | |
| CN206307521U (en) | A kind of storage device suitable for water lustering oil emulsion | |
| CN204557233U (en) | A kind of valve module controlling fluid flow | |
| CN206089016U (en) | Flashboard automatic start/stop and automatic reagent feeding's device | |
| CN203729278U (en) | Buoyancy tank water gate | |
| CN204387427U (en) | A kind of four axle flow balance regulators | |
| CN103994269A (en) | Mechanically-controlled wall-mounted solar water heater | |
| CN202092351U (en) | Emptying device of water in solar water feeding pipe | |
| CN209654717U (en) | A kind of automatic control water valve | |
| CN202392146U (en) | Ball valve with pilot valves | |
| CN205205966U (en) | Deodorantly prevent stifled PVC downcomer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210416 Address after: Building 1, No.1, Haikun Road, Fengxian District, Shanghai Patentee after: Shanghai Fufen Intelligent Technology Center Address before: Jiading District Jiangqiao town park four road 201812 Shanghai City No. 188 building second floor Patentee before: KC-VAL (SHANGHAI) Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221031 Address after: 201712 Room 103, Building 6, No. 258, Zhenying Road, Qingpu District, Shanghai Patentee after: Hyou (Shanghai) Intelligent Technology Co.,Ltd. Address before: Building 1, No.1, Haikun Road, Fengxian District, Shanghai Patentee before: Shanghai Fufen Intelligent Technology Center |