CN106352097B - Combined labyrinth sealing device - Google Patents
Combined labyrinth sealing device Download PDFInfo
- Publication number
- CN106352097B CN106352097B CN201610967443.7A CN201610967443A CN106352097B CN 106352097 B CN106352097 B CN 106352097B CN 201610967443 A CN201610967443 A CN 201610967443A CN 106352097 B CN106352097 B CN 106352097B
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- sealing device
- sealing
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- strip
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Classifications
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- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/44—Free-space packings
- F16J15/447—Labyrinth packings
- F16J15/453—Labyrinth packings characterised by the use of particular materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/40—Feeding or discharging devices
- B65G53/46—Gates or sluices, e.g. rotary wheels
- B65G53/4608—Turnable elements, e.g. rotary wheels with pockets or passages for material
-
- 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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/04—Bulk
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/04—Bulk
- B65G2201/042—Granular material
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
A kind of Combined Labyrinth sealing device of the present invention, it includes sealing device, sealing strip, bracket.The cross section of bracket is m shapes, there is 2 outer groove bars, 1-30 Inner groove bars on bracket, and the outer groove bar and Inner groove bars of bracket support sealing device, and outer groove bar also acts as dust-proof, waterproof effect.Sealing device is inserted in the Inner grooves of bracket, has sealing strip in the groove between sealing device and sealing device, sealing strip is above Inner groove bars.Combined Labyrinth sealing device is according to the needs of dynamic sealing, with reference to the different qualities of encapsulant, the material of bracket is what soft rubber made, sealing device, sealing strip are the making such as graphite, tetrafluoroethene, two soft or hard combinations, by the cushioning supportive of rubber bracket, sealing strip, the sealing device in radian face can reach more preferable dynamic sealing effect, reach wear-resisting, dust-proof, leakproof excellent sealing performance.
Description
Technical field
The present invention relates to being a kind of labyrinth gland, more specifically Combined Labyrinth sealing device.
Background technology
Labyrinth seal is the sealing for having perhaps flexuose cell to reduce leakage between rotational parts and retaining element.Typically
Labyrinth seal be often the monoblock type that a kind of material makes labyrinth gland.Labyrinth seal is not by rotary speed and temperature
Limitation, friction power loss is minimum.Prior art labyrinth seal is typically the principle using groove and groove, by the spacer and end cap of body
On be processed into the groove of mutual cooperation, the gap of very little is left between groove and groove, several rings being arranged in order are set around rotating shaft
Row sealing tooth, a series of dam gap and expansion cavitys are formed between tooth and tooth, sealed medium is by between tortuous labyrinth
Throttle effect and Drain Resistance are produced during gap.
At present, airlock, wind stopping device, discharge gate are applied to the handling of dry powdery and granule materials；Airlock, close wind
Device, discharge gate are made up of valve body, cylindrical type impeller, bearing, sealing device, drive device.Cylindrical type impeller is in valve body
Intracavitary, cylindrical type impeller are made up of valve shaft, barrel valve, storage bin, sealing device.Pacify on barrel valve around storage bin Hatch Opening
Equipped with sealing device；Because the material of conveying is needed closed and have and transmit in high pressure, the system of negative pressure, to Impeller airlock
The requirement more and more higher of air-tightness, gas leakage and discharge pressure；The current small poor air-tightness of Impeller airlock sealing surface, air leakage
Greatly, charging, the high gas-tight seal requirement of discharging of vacuum drying apparatus are not reached.To the dynamic sealing requirements of sealing device
It is high, it is necessary to ensure that the high-air-tightness of airlock, wind stopping device, discharge gate in operation process is strong, air leakage is small.
The content of the invention
The problem to be solved in the present invention is to overcome the shortcomings of the prior art, there is provided a kind of dynamic sealing performance is good
Combined Labyrinth sealing device, it utilizes the sealing principle of groove and groove, with reference to the characteristic of different encapsulants, soft or hard combination,
Wear-resisting, dust-proof, leakproof performance is reached.
In order to reach above-mentioned purpose, what the present invention was achieved through the following technical solutions：In order to reach above-mentioned requirements, combined type
Labyrinth gland includes sealing device, sealing strip, bracket.
The making material of described bracket is rubber, or compound material.
The outward appearance of described bracket is the sealing strip of strip, or O-shaped sealing ring.
The cross section of described bracket is m shapes, there is 2 outer groove bars, 1-30 Inner groove bars on bracket.
The height of described outer groove bar is higher than the height of Inner groove bar.
1st, the depth of the Inner grooves of bracket is 1.5-25mm, and the width of Inner grooves is 1-3mm.
2nd, the height of outer groove bar is 2-30mm；The width of outer groove bar is 0.5-5mm；The length of outer groove bar is 20-
1000mm。
3rd, the height of interior groove bar is 1-28mm；The width of interior groove bar is 0.1-5mm；The length of Inner groove bars is 20-
1000mm。
Described outer groove bar plays a part of dust-proof, waterproof.
The upper surface of described outer groove bar is plane, or concave arc degree shape, or convex arc degree shape.Outer groove bar it is upper
Suitable contact surface is designed, increases dust-proof effect according to different sealing surface needs in end face.
1st, bracket is O-ring seal, and when Inner notches are outside, the upper surface of outer groove bar is convex arc degree shape.
2nd, bracket is O-ring seal, and when Inner notches are inside, the upper surface of outer groove bar is concave arc degree shape.
3rd, bracket is the sealing strip of strip, and when Inner notches are parallel, the upper surface of outer groove bar is plane.
The making material of described sealing device is rubber, or metal, or graphite, or tetrafluoroethene,
Either compound material.
The making material of described sealing strip is rubber, or metal, or graphite, or tetrafluoroethene, or
Person is compound material.
Described sealing device is the sealing strip of strip, or O-shaped sealing ring.
Described sealing device is arranged in the Inner grooves of bracket.
1st, the height of sealing device is 2.5-28mm, and the width of sealing device is 0.1-3mm；The length of sealing device is
20—1000mm。
2nd, the height of the upper surface of sealing device is higher 1-3mm than the height of the upper surface of the Inner groove bars of bracket.
3rd, the height of the upper surface of sealing device with the height of the upper surface of the outer groove bar of bracket be as height.
The Inner grooves of each of present labyrinth gland are insertions, are not separated between its Inner groove.
Described sealing strip is the sealing strip of strip.
There is sealing strip in inside groove between described sealing device and sealing device.
Described sealing strip is mounted in above Inner groove bars, or sealing strip and Inner groove bars are integral.
1st, in the inside groove between sealing device and sealing device every a segment distance install a sealing strip, sealing device with
The small space sealed one by one can be formed in inside groove between sealing device, is strengthened interior between sealing device and sealing device
The tightness of groove, reduce the effect of leakage.
2nd, the upper surface height of sealing strip is as the upper surface height of sealing device；The width and Inner grooves of sealing strip
The width of bar is the same, and the length of sealing strip is 1-8mm.
The fixed sealing device of described bracket, during dynamic sealing, bracket also act as to the power-assisted of sealing device,
The effect of absorption.
According to the needs of dynamic sealing, with reference to the different qualities of encapsulant, the material of bracket is that soft rubber makes
, sealing device is that graphite makes, and two soft or hard combinations, is supported by the pressure buffer of rubber bracket, and sealing device can be with
Reach more preferable dynamic sealing effect.
1st, sealing device is pressed into the groove of the bracket of rubber, the pressure of the sealing device that the bracket of rubber is subject to can be with
Bounce-back is transmitted to sealing device, increases the palette dynamics of sealing device.
2nd, the extraneous pressure that sealing device is subject to can be conducted on the bracket of rubber, and the bracket of such rubber absorbs
Excess pressure, it is possible to reduce the abrasion of sealing device.
The upper surface of described sealing device is plane, or concave arc degree shape, or convex arc degree shape；According to difference
Sealing surface need, design suitable contact surface, increase sealing area.
The upper surface of described sealing strip is plane, or concave arc degree shape, or convex arc degree shape；According to different
Sealing surface needs, and designs suitable contact surface, increases sealing area.
1st, bracket is O-ring seal, and sealing device is O-ring seal, and when Inner notches are outside, the upper surface of sealing device is
Convex arc degree shape, the upper surface of sealing strip is convex arc degree shape.
2nd, bracket is O-ring seal, and sealing device is O-ring seal, and when Inner notches are inside, the upper surface of sealing device is
Concave arc degree shape；The upper surface of sealing strip is concave arc degree shape.
3rd, bracket is the sealing strip of strip, and sealing device is sealing strip, when Inner notches are parallel, the upper end of sealing device
Face is plane；The upper surface of sealing strip is plane.
The installation of described Combined Labyrinth sealing device, the method used and labyrinth gland currently on the market
The method install, used is the same.Combined Labyrinth sealing device is also applied to the sealing device of liquid, gas
On, it has reached wear-resisting, dust-proof, leakproof excellent sealing performance, durable in use.
It is of the invention to be had the advantages that with existing labyrinth gland ratio：Combined Labyrinth sealing device is according to dynamic
The needs of sealing, it, with reference to the characteristic of different encapsulants, soft or hard combination, has reached resistance to using groove and the sealing principle of groove
Mill, dust-proof, leakproof performance.The material of bracket is what soft rubber made, and sealing device, sealing strip are graphite, tetrafluoro second
What alkene made, two soft or hard combinations, supported by the pressure buffer of rubber bracket, the sealing device in radian face can reach more preferable
Dynamic sealing effect.
Brief description of the drawings
Fig. 1, Combined Labyrinth sealing device of the invention schematic front view；
Fig. 2, the present invention Combined Labyrinth sealing device cross section schematic diagram；
Fig. 3, the present invention Combined Labyrinth sealing device bracket cross section schematic diagram.
Embodiment：
The present invention is described further with reference to the accompanying drawings and examples.
Embodiment：A kind of Combined Labyrinth sealing device as shown in Figure 1, it includes sealing device（1）, sealing strip（8）,
Bracket（2）.
Described bracket（2）Making material be rubber.
Described bracket（2）Outward appearance be strip.
Bracket as shown in Figure 2 and Figure 3（2）Cross section be m shapes.
Described bracket（2）On have 2 outer groove bars（5）, 3 Inner groove bars（6）.
Described outer groove bar（5）Height than Inner groove bar（6）Height it is high.
1st, bracket（2）Inner grooves（4）Depth be 3mm, Inner grooves（4）Width be 2mm.
2nd, outer groove bar（5）Height be 5mm；Outer groove bar（5）Width be 2mm；Outer groove bar（5）Length be 380mm.
3rd, interior groove bar（6）Height be 3.5mm；Interior groove bar（6）Width be 1mm；Inner groove bars（6）Length be 380mm.
Described outer groove bar（5）Play a part of dust-proof, waterproof.
Described bracket（2）Outward appearance when being the sealing strip of strip, Inner grooves（4）When mouth is parallel, bracket（2）Outer groove bar
（5）Upper surface（3）It is plane.
Described sealing device（1）Making material be graphite；Sealing device（1）It is the sealing strip of strip.
Described sealing strip（8）Making material be tetrafluoroethene；Sealing strip（8）It is the sealing strip of strip.
Sealing device as shown in Figure 2 and Figure 3（1）Installed in bracket（2）Inner grooves（4）In.
1st, sealing device（1）Height be 5mm, sealing device（1）Width be 1mm；Sealing device（1）Length be
380mm。
2nd, sealing device（1）Upper surface（3）Height compare bracket（2）Inner groove bars（6）Upper surface（3）Height it is high
1.5mm。
3rd, sealing device（1）Upper surface（3）Height and bracket（2）Outer groove bar（6）Upper surface（3）Height be the same
Height.
Sealing device as shown in Figure 1 and Figure 2（1）With sealing device（1）Between groove in have sealing strip（8）；Sealing strip
（8）In Inner groove bars（6）Above.
1st, sealing device（1）With sealing device（1）Between inside groove in sealing strip is installed（8）, sealing device（1）With it is close
Seal apparatus（1）Between inside groove in can form the small space sealed one by one；Strengthen sealing device（1）With sealing device（1）
Between groove in tightness, reduce the effect of leakage.
2nd, sealing strip（8）Upper surface（3）Height and sealing device（1）Upper surface（3）Height is the same；Sealing strip
（8）Width and Inner groove bars（6）Width be the same, sealing strip（8）Length be 3mm.
Described bracket（2）When being the sealing strip of strip, sealing device（1）Upper surface（3）It is plane；Sealing strip
（8）Upper surface（3）It is plane.
The installation of Combined Labyrinth sealing device, the installation of the method used and common labyrinth gland, use
Method is the same.
1st, according to the needs of dynamic sealing, with reference to the different qualities of encapsulant, bracket（2）Material be soft rubber
Make, sealing device（1）Be graphite make, sealing strip（8）It is that tetrafluoroethene makes.
2nd, bracket（2）Fixed sealing device（1）, during dynamic sealing, bracket（2）Also act as to sealing device
（1）, sealing strip（8）Power-assisted, absorb effect.
3rd, bracket（2）, sealing device（1）, sealing strip（8）The soft or hard combination of three, passes through rubber bracket（2）Pressure delay
Punching support, sealing device（1）, sealing strip（8）More preferable dynamic sealing effect can be reached.
4th, by sealing device（1）It is pressed into bracket（2）Inside groove（4）, sealing strip（8）In Inner groove bars（6）Above；Pressure
By sealing device（1）, sealing strip（8）Collapse into bracket（2）It is interior, the bracket of rubber（2）The sealing device being subject to（1）, sealing strip
（8）Pressure generate bounce, bracket（2）Can be by bounce anti-pass to sealing device（1）, sealing strip（8）, so can be with
Increase sealing device（1）, sealing strip（8）Palette dynamics.
5th, sealing device（1）, sealing strip（8）The extraneous pressure being subject to can be conducted to the bracket of rubber（2）On, sealing
Device（1）, sealing strip（8）Bracket can be trapped into（2）It is interior, the bracket of rubber at this moment（2）Absorb excess pressure, it is possible to reduce
Sealing device（1）, sealing strip（8）Abrasion.
Above example is only intended to help the preparation method and its core concept for understanding the present invention, and specific implementation is not limited to
It is made without performing creative labour from above-mentioned design in above-mentioned specific embodiment, those skilled in the art
Change, all fall within protection scope of the present invention.
Claims (4)
- A kind of 1. Combined Labyrinth sealing device, it is characterised in that：Combined Labyrinth sealing device includes sealing device（1）, it is close Strip of paper used for sealing（8）, bracket（2）；Described bracket（2）Cross section be m shapes；Described bracket（2）It is the sealing strip of strip, or O-shaped sealing ring；Bracket（2）It is O-ring seal, sealing device is O-ring seal, Inner grooves（4）When mouth is outside, sealing device（1）Upper end Face（3）It is convex arc degree shape, sealing strip（8）Upper surface（3）It is convex arc degree shape；Bracket（2）It is O-ring seal, sealing device is O-ring seal, Inner grooves（4）When mouth is inside, sealing device（1）Upper end Face（3）It is concave arc degree shape, sealing strip（8）Upper surface（3）It is concave arc degree shape；Bracket（2）It is the sealing strip of strip, sealing device is to seal strip, Inner grooves（4）When mouth is parallel；Sealing device（1）'s Upper surface（3）It is plane, sealing strip（8）Upper surface（3）It is plane；Described bracket（2）On have 2 outer groove bars（5）, 1-30 Inner groove bars（6）；Described outer groove bar（5）Upper surface（3）Height than Inner groove bar（6）Upper surface（3）Height it is high；Described bracket（2）Inner grooves（4）Depth be 1.5-25mm, Inner grooves（4）Width be 1-3mm；Described sealing device（1）Installed in bracket（2）Inner grooves（4）In；Described outer groove bar（5）Upper surface（3）It is plane, or concave arc degree shape, or convex arc degree shape；Described sealing device（1）It is the sealing strip of strip, or O-shaped sealing ring；Described sealing device（1）Upper surface（3）It is plane, or concave arc degree shape, or convex arc degree shape；Described sealing strip（8）It is the sealing strip of strip；Described sealing strip（8）Upper surface（3）It is plane, or concave arc degree shape, or convex arc degree shape；Described sealing device（1）Upper surface（3）Height compare bracket（2）Inner groove bars（6）Upper surface（3）Height it is high 1-3mm, sealing device（1）Upper surface（3）Height and bracket（2）Outer groove bar（5）Upper surface（3）Height be the same；Described sealing strip（8）It is mounted in Inner groove bars（6）Above, or sealing strip（8）With Inner groove bars（6）It is one 's；Sealing device（1）With sealing device（1）Between inside groove in have sealing strip（8）；Sealing device（1）With sealing device（1）It Between inside groove in can form the small space sealed one by one；Strengthen sealing device（1）With sealing device（1）Between groove in Tightness, reduce the effect of leakage；Described sealing strip（8）Upper surface（3）Height and sealing device（1）Upper surface（3）Height is the same；Sealing strip （8）Width and Inner groove bars（6）Width be the same, sealing strip（8）Length be 1-8mm；Bracket（2）Making material be rubber, or compound material；Sealing device（1）Making material be rubber, or metal, or graphite, or tetrafluoroethene, or multiple Mould assembly material；Sealing strip（8）Making material be rubber, or metal, or graphite, or tetrafluoroethene, or compound Section bar material；Bracket（2）Fixed sealing device（1）, during dynamic sealing, bracket（2）Also act as to sealing device（1）, sealing Bar（8）Power-assisted, absorb effect；Bracket（2）, sealing device（1）, sealing strip（8）The soft or hard combination of three, passes through bracket （2）Pressure buffer support, sealing device（1）, sealing strip（8）More preferable dynamic sealing effect can be reached.
- A kind of 2. Combined Labyrinth sealing device according to claim 1, it is characterised in that：The height of outer groove bar is 2- 30mm；The width of outer groove bar is 0.5-5mm；The length of outer groove bar is 20-1000mm；The height of interior groove bar is 1-28mm；It is interior The width of groove bar is 0.1-5mm；The length of Inner groove bars is 20-1000mm.
- A kind of 3. Combined Labyrinth sealing device according to claim 1, it is characterised in that：Bracket（2）It is O-shaped sealing Circle, Inner grooves（4）When mouth is outside, outer groove bar（5）Upper surface（3）It is convex arc degree shape；Bracket（2）It is O-ring seal, Inner grooves（4） When mouth is inside, outer groove bar（5）Upper surface（3）It is concave arc degree shape；Bracket（2）It is the sealing strip of strip, Inner grooves（4）Mouth is parallel When, outer groove bar（5）Upper surface（3）It is plane.
- A kind of 4. Combined Labyrinth sealing device according to claim 1, it is characterised in that：Sealing device（1）Height It is 2.5-28mm, sealing device（1）Width be 0.1-3mm, sealing device（1）Length be 20-1000mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610967443.7A CN106352097B (en) | 2016-11-05 | 2016-11-05 | Combined labyrinth sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610967443.7A CN106352097B (en) | 2016-11-05 | 2016-11-05 | Combined labyrinth sealing device |
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| Publication Number | Publication Date |
|---|---|
| CN106352097A CN106352097A (en) | 2017-01-25 |
| CN106352097B true CN106352097B (en) | 2018-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610967443.7A Active CN106352097B (en) | 2016-11-05 | 2016-11-05 | Combined labyrinth sealing device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111749901A (en) * | 2019-03-29 | 2020-10-09 | 上海海立电器有限公司 | Check valve and rotor compressor |
| CN112324524A (en) * | 2020-11-03 | 2021-02-05 | 中国北方发动机研究所(天津) | Composite sealing ring of supercharger |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10169788A (en) * | 1996-12-13 | 1998-06-26 | Hitachi Ltd | Water sealing device and water turbine with such water sealing device |
| CN2793459Y (en) * | 2005-04-18 | 2006-07-05 | 邯郸钢铁股份有限公司 | Sealing assembly of rotary component |
| CN200975264Y (en) * | 2006-09-12 | 2007-11-14 | 赵岫华 | Labyrinth sealing |
| CN205605826U (en) * | 2015-06-18 | 2016-09-28 | 孔向东 | Composite seal who is suitable for double -phase medium of solid -liquid |
| CN206112093U (en) * | 2016-11-05 | 2017-04-19 | 张海娟 | Modular labyrinth seals device |
-
2016
- 2016-11-05 CN CN201610967443.7A patent/CN106352097B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10169788A (en) * | 1996-12-13 | 1998-06-26 | Hitachi Ltd | Water sealing device and water turbine with such water sealing device |
| CN2793459Y (en) * | 2005-04-18 | 2006-07-05 | 邯郸钢铁股份有限公司 | Sealing assembly of rotary component |
| CN200975264Y (en) * | 2006-09-12 | 2007-11-14 | 赵岫华 | Labyrinth sealing |
| CN205605826U (en) * | 2015-06-18 | 2016-09-28 | 孔向东 | Composite seal who is suitable for double -phase medium of solid -liquid |
| CN206112093U (en) * | 2016-11-05 | 2017-04-19 | 张海娟 | Modular labyrinth seals device |
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| Publication number | Publication date |
|---|---|
| CN106352097A (en) | 2017-01-25 |
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Effective date of registration: 20201130 Address after: 215421, Sha Lu Road 199, Shaxi Town, Suzhou, Jiangsu, Taicang Patentee after: SUZHOU EDWARD PETROCHEMISTRY Co.,Ltd. Address before: Jianxi Peony Road 471003 South Street Henan Luoyang Province Tang Village No. 10 Patentee before: Zhang Haijuan |