CN104358705B - A kind of corrosion-resistant integrated mechanical sealing device for pump - Google Patents
A kind of corrosion-resistant integrated mechanical sealing device for pump Download PDFInfo
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- CN104358705B CN104358705B CN201410616657.0A CN201410616657A CN104358705B CN 104358705 B CN104358705 B CN 104358705B CN 201410616657 A CN201410616657 A CN 201410616657A CN 104358705 B CN104358705 B CN 104358705B
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- ring
- gland
- sealing
- stationary ring
- pump
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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
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/106—Shaft sealings especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/12—Shaft sealings using sealing-rings
- F04D29/126—Shaft sealings using sealing-rings especially adapted for liquid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Sealing (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to the sealing of liquid pump, it is specifically related to a kind of corrosion-resistant integrated mechanical sealing device for pump, this device by axle sleeve, gland, be positioned at media end inside gland and seal and be positioned at the atmosphere end water-stop outside gland and form, it is characterized in that, wave plate spring is arranged between spring base and gland；Media end seals and also includes an anti-lock sealing ring and anti-lock sealing ring；This device can solve the sliding ring between gland or anti-lock sealing ring and stationary ring in the running of pump, the problem causing seal failure because stationary ring motion makes the annular seal space at its place increase, and use water-stop at atmospheric side, prevent that there is the poisonous and harmful media leaks such as corrosivity and enter air, make sealing effectiveness more preferable, side medium sealing surface and whole annular seal space can also be cooled down, lubricate and rinse simultaneously.
Description
Technical field
The present invention relates to the sealing of liquid pump, be specifically related to the integrated mechanical sealing device of liquid pump.
Background technology
Integrated mechanical sealing be non-Overhaul site by rotating ring, stationary ring, spring, auxiliary seal ring, axle sleeve,
The main parts size such as gland and static seal packing ring are installed and are combined, and equipment stops and just can change in time, letter
Change the process such as measurement, adjustment, not only can reduce the site examining and repairing time, save maintenance cost, but also can
To improve installation accuracy, it is ensured that sealing effectiveness, increase the service life.Therefore, integrated mechanical sealing obtains
It is widely applied.
In existing machinery sealing device, the spring that stationary ring compensates rotating ring, stationary ring weares and teares is promoted to be arranged on stationary ring
And between spring base, it is impossible to promote sliding ring to follow stationary ring and move together.During pump operation, because of
When producing abrasion for relative rotary motion between rotating ring and stationary ring, stationary ring, under elastic force promotes, is directed away from
The direction of sliding ring is moved, and makes the annular seal space at sliding ring place increase, and sliding ring is subject to
Pressure reduces and ultimately results in seal failure.
The basic structure of existing noncorrosive pump integrated mechanical sealing as shown in Figure 1, its movable sealing face
Except between rotating ring, stationary ring rotate against sealing surface in addition to, also have dependence O between sealing gland and stationary ring
Slipper seal (also known as the auxiliary seal) face of type circle, this sealing surface is when sealing device is installed, to O type
Circle imposes precompression, makes O deform upon, and the gap inside and outside filling spring base, to avoid corrosive liquid to enter
Enter annular seal space.See accompanying drawing 2, but, after rotating ring weares and teares with stationary ring, spring just promotes stationary ring to rotating ring side
To reach, and then cancel the precompression that spring base end face is applied on described O, made described O
Loss of seal effect, cause corrosive liquid enter annular seal space and along pump power transmission shaft formed leakage.
The application for a patent for invention of Publication No. CN 102562648A discloses one, and " built-in type fluorine moulds pump with anti-
Locking mechanical seal structure ", this structure is in the basic structure of above-mentioned noncorrosive pump integrated mechanical sealing
On the basis of, outside described stationary ring, set up an anti-lock ring, to overcome because the served as a contrast plastic layer of sealing gland inner chamber exists
When expanding under high temperature, sealing ring (i.e. described O) decrement is excessive and locking.But, above-mentioned specially
Scheme disclosed in profit application yet suffers from the basic structure of described existing noncorrosive pump integrated mechanical sealing
Existing problem.
Summary of the invention
For the deficiencies in the prior art, the technical problem of the present invention is to provide a kind of noncorrosive pump collection
Dress formula mechanically-sealing apparatus, the advantage that this device has good sealing effect.
The present invention solves the scheme of above-mentioned technical problem:
A kind of corrosion-resistant integrated mechanical sealing device for pump, this device by axle sleeve (17), gland (21),
It is positioned at the sealing of the media end inside gland and is positioned at the atmosphere end water-stop composition outside gland, wherein,
The described gland (21) surface in trumpet-shaped inner chamber is lined with corrosion-resistant fluoroplastics；Described axle sleeve
In (17) inner chambers being coaxially located in described gland (21), and sheathed described media end seals, separately
One headgear is provided with described atmosphere end water-stop；
Described media end seals and includes stationary ring (2), sliding ring (4), spring base (9), wave plate bullet
Spring (11), rotating ring (1) and seal driving pin (8), wherein, described rotating ring (1) is fixed on axle sleeve (17)
It is positioned in gland (21) inner chamber on the end face of；Described stationary ring (2) is tubular structure, its excircle
The middle part in face is provided with the shaft shoulder (201), forms a little shape of external diameter big other end external diameter；Described spring
Seat (9) is also tubular structure, and the inwall of one head forms a stationary ring spacing collar (901) to central reduction；Its
It is characterised by,
Described stationary ring (2), spring base (9) and wave plate spring (11) depend on from described rotating ring (1)
Secondary be set in that axle sleeve (17) is positioned in gland (21) inner chamber one, wherein, described stationary ring (2) is outward
Little other end, footpath puts in spring base (9), and end face is close to described stationary ring spacing collar (901)；Slide close
The shaft shoulder (201) set on described stationary ring (2) outer circumference surface and spring base (9) are tamped in seal (4)
End face between；(11) one, described wave plate spring is against on spring base (9), and other end is against gland
(21), on, through spring base (9), described stationary ring (2) is pressed together with rotating ring (1).
When medium temperature or ambient temperature height, the corrosion-resistant fluoroplastics because of gland surface of internal cavity often occur
Excessively expand and by sliding ring and the phenomenon of stationary ring " locking ".In order to solve this technical barrier, this
One improvement project of invention is that the oral area radial outward dilations of described gland (21) inner chamber forms a footpath
To enlarged portion, the surface in this radial dilatation portion is provided with ring-shaped groove；Described media end seals and also includes that one prevents
Locking sealing ring (3) and anti-lock sealing ring (7)；Wherein, described anti-lock sealing ring (3) is embedded
In the radial dilatation portion of the oral area of described gland (21) inner chamber, described sliding ring (4) is covered in
In it, described anti-lock sealing ring (7) is located in described ring-shaped groove, seals anti-lock sealing ring (3)
And the gap between gland (21) surface of internal cavity.
The corrosion-resistant mechanical sealing device used for pump of one disclosed in this invention, this device is interior at sealing medium end
Dress, in-flow balanced seal, good sealing effect, particularly solve between anti-lock sealing ring and stationary ring
The tracing ability problem of sliding ring (O).The present invention by wave plate spring is arranged on spring base with
Between gland, when rotating ring, stationary ring abrasion, wave plate spring can promote stationary ring and cunning by spring base simultaneously
Dynamic seal ring moves together, and the annular seal space space at sliding ring place keeps constant, i.e. sliding ring is subject to
The pressure arrived is constant, and therefore, the present invention can solve the slipper seal problem at sliding ring well.
Owing to water-stop can make sliding ring contact seal interface can form lubricating water film, frictional force is less,
And it is simultaneously used anti-lock sealing ring so that wave plate spring promotes the dynamic of stationary ring and sliding ring simultaneously
Make the most reliable.
Additionally, due to use water-stop at atmospheric side, make integral sealing effect more preferable, simultaneously can also be to medium
Side seal face and whole annular seal space carry out cooling down, lubricate and rinsing, and that can avoid between rotating ring, stationary ring is close
The phenomenon appearance that front cover dry grinding damages and makes because there is abrasive dust abrasion accelerate, and can dilute, take out of and may let out
The medium of leakage, prevents having corrosivity or poisonous and harmful media leaks enters air, pollute, it is also possible to keep away
Exempting from when pressure subatmospheric in pump, air, to pump internal leakage, affects the operational efficiency of pump；Institute of the present invention
Disclosed mechanically-sealing apparatus wide adaptability, has corrosivity at pumped (conveying) medium, easily crystallizes and/or there is solid
Under the complex working conditions such as granule, high temperature, high viscosity, all can reliability service.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing noncorrosive pump integrated mechanical sealing.
Fig. 2 is the state after existing noncorrosive pump integrated mechanical sealing movable sealing surface wear shown in Fig. 1.
Fig. 3 is the structure of one embodiment of corrosion-resistant integrated mechanical sealing device for pump disclosed in this invention
Schematic diagram (section view).
Fig. 4 is the view (section view) that mechanically-sealing apparatus shown in Fig. 3 is arranged on noncorrosive pump.
Fig. 5 is the knot of corrosion-resistant another embodiment of integrated mechanical sealing device for pump disclosed in this invention
Structure schematic diagram (section view).
Fig. 6 is the view (section view) that mechanically-sealing apparatus shown in Fig. 5 is arranged on noncorrosive pump.
Fig. 7～Fig. 8 is the spring seat assembly of corrosion-resistant integrated mechanical sealing device for pump disclosed in this invention
Structural representation, wherein Fig. 5 is front view (section view), and Fig. 6 is the A-A sectional view of Fig. 5.
Fig. 9～Figure 10 is the static-ring structure of corrosion-resistant integrated mechanical sealing device for pump disclosed in this invention
Schematic diagram, wherein Fig. 7 is front view (section view), and Fig. 8 is the right view of Fig. 7.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.
Embodiment 1
Seeing Fig. 3, corrosion-resistant integrated mechanical sealing device for pump disclosed in this invention, this device is by axle sleeve
17, gland 21, be positioned at media end inside gland and seal and be positioned at the atmosphere end water-stop composition outside gland,
Wherein, the gland 21 surface in trumpet-shaped inner chamber is lined with corrosion-resistant fluoroplastics；17 1, axle sleeve is coaxially worn
Be located in the inner chamber of described gland (21), be arranged with described media end seal, other end be arranged with described greatly
Gas end water-stop, and on outer circumference surface, it is provided with two screwed holes, it is fixed in pump shaft for holding screw
Upper use.
Media end seals and includes rotating ring 1, stationary ring 2, sliding ring 4, seal driving pin 8, spring base 9
With wave plate spring 11, wherein, rotating ring 1 is fixed on axle sleeve 17 by seal driving pin 8 and is positioned at gland 21
On the end face of in chamber, equipped with sleeve sealing pad 6 between rotating ring 1 and axle sleeve 17.
Seeing Fig. 9 and Figure 10, stationary ring 2 is tubular structure, and the middle part of its outer circumference surface is provided with the shaft shoulder 201,
Forming a little shape of external diameter big other end external diameter, the sealing surface of stationary ring 2 is positioned at that external diameter is big；And
And the surface of the shaft shoulder (201) is ring-type inclined-plane, this inclined-plane outer circumference surface from the little other end of external diameter is outside
The outer circumference surface in big one, footpath tilts.
Seeing Fig. 7 and Fig. 8, spring base 9 is also tubular structure, and the inwall of one head forms one to central reduction
Stationary ring spacing collar 901, and fit together with the sealing surface of rotating ring 1
Seeing Fig. 3, stationary ring 2, spring base 9 and wave plate spring 11 automatic ring 1 are sequentially sleeved at axle sleeve 17
Being positioned in gland 21 inner chamber, wherein, the other end that stationary ring 2 external diameter is little puts in spring base 9, end
Stationary ring spacing collar 901 is close in face；Sliding ring 4 tamps the shaft shoulder 201 set on stationary ring 2 outer circumference surface
And between the end face of spring base 9；Wave plate spring 11 is arranged between spring base 9 and gland 21, and one is supported
On spring base 9, other end is against on gland 21, is squeezed with rotating ring 1 by described stationary ring 2 through spring base 9
Force together；Stationary ring stop pin 10 inserts in the pin-and-hole set by stationary ring 2 through the outer circumference surface of spring base 9,
One of spring base stop pin 12 is inserted in the pin-and-hole that spring base 9 end face is provided with, and other end passes gland 21
Insert in the pin-and-hole that water sealing stationary ring 13 is provided with.
Atmosphere end water-stop includes being arranged on the water sealing stationary ring 13 outside axle sleeve 17 and gland 21, water seal movable ring
14, stationary ring sealing ring 15, rotating seat sealing ring 16, rotating seat 23, stage clip 24 and press spring base 25 and water nozzle
22, wherein, the sealing surface of water sealing stationary ring 13 and water seal movable ring 14 fits together, and both are separately mounted to
In the installation room of gland 21 and rotating seat 23, and water sealing stationary ring is positioned at the installation of gland 21 by a jump ring
Indoor；Between water sealing stationary ring 13 and gland 21, between axle sleeve 17 and rotating seat 23, it is respectively provided with stationary ring
Sealing ring 15 and rotating seat sealing ring 16；Stage clip 24 has 8, and its one end is separately mounted to press spring base 25 end
On face in the compression spring hole of even cloth, the other end is against on the end face of rotating seat 23；On the end face of press spring base 25 also
2 bolts hole of even cloth, connecting bolt is threadeded with rotating seat 23, by press spring base 25 through this bolt hole
Linking together with rotating seat 23, connecting bolt can also be according to the elastic force of hydraulic pressure regulation stage clip 24；
The both ends of the surface of press spring base 25 are positioned at axle sleeve 17 side and are respectively equipped with projection, and axle sleeve 17 is stretched in one end of its projection
And being against between rotating seat 23 on rotating seat sealing ring 16, other end outer peripheral face is provided with two screwed holes,
Press spring base 25 is fixed on axle sleeve 17 by this screwed hole by holding screw；Water nozzle 22 has two, all pacifies
Being contained on gland 21, the water of water seal flows into through it, flows out, to the annular seal space inside gland 21 and medium
Side seal face carries out cooling down, lubricate and rinsing, and can dilute, take the medium that may leak out of, prevents from polluting.
Seeing Fig. 4, corrosion-resistant integrated mechanical sealing device for pump disclosed in this invention is arranged on noncorrosive pump
On, the inner surface of the pump case of this noncorrosive pump and the Surface coating of impeller 19 have corrosion-resistant fluoroplastics, at rotating ring
Equipped with ring seal pad 5 between 1 and impeller 19, pump shaft 18 is a quill shaft, and pull bar 26 passes pump shaft 18,
Threaded with impeller 19, and at the other end of pump shaft 18 with nut check, to ensure rotating ring 1 and impeller
Sealing effectiveness between 19 and axle sleeve 17.
For ensureing the corrosion resistance, wear-resisting of corrosion-resistant integrated mechanical sealing device for pump disclosed in this invention
The parts that may contact with pumped medium are all used and have anticorrosion antiwear and thermally-stabilised by property and heat stability
Property good material make, wherein, the material of rotating ring 1, stationary ring 2, water sealing stationary ring 13 and water seal movable ring 14 is equal
Using high-purity alpha-SiC industrial ceramics, sliding ring 4, ring seal pad 5, sleeve sealing pad 6, stationary ring are close
The material of seal 15 and rotating seat sealing ring 16 is fluorubber, seal driving pin 8, stationary ring stop pin 10
Using 1Gr18Ni9Ti with the material of spring base stop pin 12, the material of wave plate spring 11 uses
1Gr18Ni12Mo2Ti。
Embodiment 2
See Fig. 5～Fig. 6, the corrosion-resistant integrated mechanical sealing device for pump described in the present embodiment and embodiment
The difference of 1 is, the oral area radial outward dilations of gland 21 inner chamber forms a radial dilatation portion, this footpath
It is provided with ring-shaped groove to the surface of enlarged portion；Media end seals and also includes anti-lock ring sealing 3 and an anti-lock
Sealing ring 7；Wherein, anti-lock sealing ring 3 is embedded in the radial dilatation portion of the oral area of gland 21 inner chamber,
Covering in the inner by sliding ring 4, anti-lock sealing ring 7 is located in described ring-shaped groove, to anti-lock
Gap between sealing ring 3 and gland 21 surface of internal cavity seals.
Anti-lock sealing ring 3 uses high-purity alpha-SiC industrial ceramics manufacture, and the material of anti-lock sealing ring 7 is fluorine
Rubber.
The structure of remaining parts, installation site and method and material are same as in Example 1.
Claims (2)
1. a corrosion-resistant integrated mechanical sealing device for pump, this device by axle sleeve (17), gland (21),
It is positioned at the sealing of the media end inside gland and is positioned at the atmosphere end water-stop composition outside gland, wherein,
The described gland (21) surface in trumpet-shaped inner chamber is lined with corrosion-resistant fluoroplastics；Described axle sleeve
In (17) inner chambers being coaxially located in described gland (21), and sheathed described media end seals, separately
One headgear is provided with described atmosphere end water-stop；
Described media end seals and includes stationary ring (2), sliding ring (4), spring base (9), wave plate bullet
Spring (11), rotating ring (1) and seal driving pin (8), wherein, described rotating ring (1) is fixed on axle sleeve (17)
It is positioned in gland (21) inner chamber on the end face of；Described stationary ring (2) is tubular structure, its excircle
The middle part in face is provided with the shaft shoulder (201), forms a little shape of external diameter big other end external diameter；Described spring
Seat (9) is also tubular structure, and the inwall of one head forms a stationary ring spacing collar (901) to central reduction；Its
It is characterised by,
Described stationary ring (2), spring base (9) and wave plate spring (11) depend on from described rotating ring (1)
Secondary be set in that axle sleeve (17) is positioned in gland (21) inner chamber one, wherein, described stationary ring (2) is outward
Little other end, footpath puts in spring base (9), and end face is close to described stationary ring spacing collar (901)；Slide close
The shaft shoulder (201) set on described stationary ring (2) outer circumference surface and spring base (9) are tamped in seal (4)
End face between；(11) one, described wave plate spring is against on spring base (9), and other end is against gland
(21), on, through spring base (9), described stationary ring (2) is pressed together with rotating ring (1).
The corrosion-resistant integrated mechanical sealing device for pump of one the most according to claim 1, its feature exists
In,
The oral area radial outward dilations of described gland (21) inner chamber forms a radial dilatation portion, and this radially expands
The surface in the portion of opening is provided with ring-shaped groove；
Described media end seals and also includes an anti-lock sealing ring (3) and anti-lock sealing ring (7)；Wherein,
Described anti-lock sealing ring (3) is embedded in the radial dilatation portion of the oral area of described gland (21) inner chamber,
Being covered in the inner by described sliding ring (4), described anti-lock sealing ring (7) is located at described ring
In shape groove, seal the gap between anti-lock sealing ring (3) and gland (21) surface of internal cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410616657.0A CN104358705B (en) | 2014-11-05 | 2014-11-05 | A kind of corrosion-resistant integrated mechanical sealing device for pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410616657.0A CN104358705B (en) | 2014-11-05 | 2014-11-05 | A kind of corrosion-resistant integrated mechanical sealing device for pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104358705A CN104358705A (en) | 2015-02-18 |
| CN104358705B true CN104358705B (en) | 2016-08-24 |
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| CN201410616657.0A Active CN104358705B (en) | 2014-11-05 | 2014-11-05 | A kind of corrosion-resistant integrated mechanical sealing device for pump |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105697405B (en) * | 2016-04-13 | 2018-11-02 | 镇江福泰克流体技术有限公司 | A kind of axle sleeve for centrifugal pump |
| CN107246403B (en) * | 2017-07-06 | 2023-09-05 | 邯钢集团邯宝钢铁有限公司 | Shaft end sealing device of acid mist fan |
| CN107588038B (en) * | 2017-10-11 | 2023-06-23 | 西安航天动力研究所 | Mechanical sealing structure of turbine pump |
| CN110219826B (en) * | 2019-05-23 | 2024-03-19 | 李付伟 | Integrated shaft seal for mine water pump |
| CN111622979B (en) * | 2020-04-07 | 2021-08-17 | 福建福清核电有限公司 | Method for improving sealing reliability of third-stage mechanical seal of main pump |
| CN112096876B (en) * | 2020-09-11 | 2022-11-04 | 东台市光明机械密封有限公司 | Corrosion-resistant container type mechanical seal and working method thereof |
| CN112588831A (en) * | 2020-11-25 | 2021-04-02 | 广西柳州钢铁集团有限公司 | Equal-width rolling roller |
| CN114251275B (en) * | 2021-12-23 | 2024-02-13 | 安徽瑞耐特机械设备有限公司 | Submerged pump sealing-free device |
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| JPH07198042A (en) * | 1993-12-28 | 1995-08-01 | Nippon Pillar Packing Co Ltd | Mechanical seal and pumping device provided with this mechanical seal |
| CN2575340Y (en) * | 2002-10-21 | 2003-09-24 | 宜兴市工程塑料设备厂 | Vanes of centrifugal pressure fan and centrifugal pressure fan with the same vanes |
| CN201326568Y (en) * | 2008-12-09 | 2009-10-14 | 宜兴市世达泵业制造有限公司 | Multi-functional mechanical seal |
| CN102562648A (en) * | 2011-12-22 | 2012-07-11 | 安徽江南泵阀有限公司 | Anti-lock mechanical sealing structure for built-in type fluoroplastic pump |
| CN204213037U (en) * | 2014-11-05 | 2015-03-18 | 安徽江南泵阀有限公司 | A kind of corrosion-resistant integrated mechanical sealing device for pump |
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2014
- 2014-11-05 CN CN201410616657.0A patent/CN104358705B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07198042A (en) * | 1993-12-28 | 1995-08-01 | Nippon Pillar Packing Co Ltd | Mechanical seal and pumping device provided with this mechanical seal |
| CN2575340Y (en) * | 2002-10-21 | 2003-09-24 | 宜兴市工程塑料设备厂 | Vanes of centrifugal pressure fan and centrifugal pressure fan with the same vanes |
| CN201326568Y (en) * | 2008-12-09 | 2009-10-14 | 宜兴市世达泵业制造有限公司 | Multi-functional mechanical seal |
| CN102562648A (en) * | 2011-12-22 | 2012-07-11 | 安徽江南泵阀有限公司 | Anti-lock mechanical sealing structure for built-in type fluoroplastic pump |
| CN204213037U (en) * | 2014-11-05 | 2015-03-18 | 安徽江南泵阀有限公司 | A kind of corrosion-resistant integrated mechanical sealing device for pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104358705A (en) | 2015-02-18 |
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Address after: 242500 No.16 ruomao Road, Jing County Economic Development Zone, Xuancheng City, Anhui Province Patentee after: Anhui Jiangnan pump valve group Co., Ltd Address before: 242500 No.16 ruomao Road, Jing County Economic Development Zone, Xuancheng City, Anhui Province Patentee before: ANHUI JIANGNAN PUMP VALVE Co.,Ltd. |