CN203796968U - Labyrinth shutdown two-way seal device - Google Patents
Labyrinth shutdown two-way seal device Download PDFInfo
- Publication number
- CN203796968U CN203796968U CN201420220744.XU CN201420220744U CN203796968U CN 203796968 U CN203796968 U CN 203796968U CN 201420220744 U CN201420220744 U CN 201420220744U CN 203796968 U CN203796968 U CN 203796968U
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- CN
- China
- Prior art keywords
- ring
- chute
- rotatingshaft
- labyrinth
- boss
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- 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.)
- Expired - Fee Related
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- Sealing Devices (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model provides a labyrinth shutdown two-way seal device at least comprising a labyrinth pressing cover and a moving ring which sleeves a rotary shaft and which rotates with the same. The labyrinth pressing cover is fixedly mounted on an end cover of equipment through bolts, the moving ring is cylindrical, a boss with the outer diameter larger than the outer diameters of the two ends is arranged on the outer circumference of the middle of the moving ring, two axial side walls of the boss are provided with two annular grooves in corresponded positions, the bottoms of the two annular grooves are at least provided with three through holes distributed evenly, the through holes are provided with springs, and two ends of the springs are pressed to two retain rings; more than four sliding grooves are evenly distributed on the outer circumference of the boss; the labyrinth pressing cover and the moving ring form an annular cavity provided with a sliding ring and two floating seal rings, and the floating seal rings sleeve the rotary shaft. The device is capable of performing seal automatically when equipment is shut down, and oil is prevented from leaking outwardly through the gap between the moving ring and the labyrinth pressing cover.
Description
Technical field
The utility model provides in a kind of machinery bearing housing or gear box lubricating oil labyrinth gland for running shaft, relates in particular to a kind of labyrinth-type excluder that can at once seal when shutting down, and belongs to seal arrangement technical field.
Background technique
Labyrinth seal is to establish the belt sealing tooth that several are arranged in order around at rotatingshaft, forms a series of gap and expansion cavitys of damming between tooth and tooth, and sealed medium produces the device that throttle effect reaches the object of Drain Resistance when the gap by tortuous labyrinth.Owing to having gap between the rotor of labyrinth seal and casing, without solid, contact, and allowed thermal expansion, and therefore adapting to the occasion of high temperature, high pressure, high speed-frequency, this seal form is widely used in the sealing of axle head and each inter-stage of steam turbine, gas turbine, compressor, blower.
Labyrinth seal in existing market, the in the situation that of normal fuel injection and normal rotation, generally there will not be grease to leak, and this is that grease relies on running shaft centrifugal action to be sealed in the oil storage tank in labyrinth completely because under rotary state.But shut down or the process of start in, often can produce grease and leak, this be because equipment in the running, just can fuel cut-off after must first shutting down, and must first fuel feeding before start.And after shutdown and before start, because equipment is in halted state, causing the labyrinth seal that relies on centrifugal force to realize sealing to lose sealing function completely, grease flows out from the gap location of stator and rotor.For above-mentioned situation, also there is no in the market any solution, generally can only let alone to leak, so not only produced waste, and befouling environment.
Summary of the invention
The utility model provides a kind of mazy type to shut down bilateral sealing device, has solved the deficiency in background technique, and this device can automatically seal under equipment downtime state, thus stop grease by the gap between rotating ring and labyrinth gland to external leakage.
Realizing the technological scheme that the utility model above-mentioned purpose adopts is:
A kind of mazy type is shut down bilateral sealing device, at least comprise labyrinth gland and the rotating ring that is enclosed within on rotatingshaft and rotates with the axis, labyrinth gland is mounted by means of bolts on equipment end and covers, described rotating ring is cylindric, its endoporus coordinates and contacts with rotatingshaft, its middle part excircle is provided with the boss that external diameter is greater than two ends external diameter, the axial cross section of described boss is rectangular, one end of rotating ring is stretched out and is provided with gap with center hole by the place, outer side center hole of labyrinth gland, the other end of rotating ring stretches in the center hole inside the gland of labyrinth and is provided with gap with the center hole of labyrinth gland medial flange, the boss at rotating ring middle part is positioned at labyrinth gland, on the axial two side of boss, be respectively equipped with two corresponding annular grooves of position, in two annular grooves, be equipped with back-up ring, be respectively back-up ring A and back-up ring B, its guide ring A is positioned at the side away from equipment end cap, and back-up ring B is positioned at the side near equipment end cap, between the bottom of two annular grooves, be at least provided with three equally distributed through holes, through hole is connected two annular grooves, is provided with spring in through hole, and the two ends of spring withstand on respectively on two back-up rings, the common chamber that forms an annular between described labyrinth gland and rotating ring, in chamber, be provided with slip ring and two floating seal rings, described slip ring sleeve is on the boss at rotating ring middle part and contact with boss, described slip ring by parallel and be circular catch A and catch B and form, two floating seal rings are all enclosed within on rotating ring, be respectively floating seal ring A and floating seal ring B, floating seal ring A is between labyrinth gland and catch A, and floating seal ring B is between labyrinth gland and catch B.
Described labyrinth gland annular chamber structure, its axial two ends are equipped with the flange towards rotating shaft direction, flange is provided with center hole and also and between rotatingshaft is provided with gap, between labyrinth gland two end boss, be provided with chamber, chamber internal diameter is greater than labyrinth gland two end boss center bores, on the wall of the chamber of chamber, be provided with at least one annular oil storage tank, below chamber, be provided with an interior spill port and outer spill port.
On the excircle of described boss, be evenly distributed with at least four chutes, chute in the shape of a spiral, and become 5～75 ° of angles with the center line of rotatingshaft, described chute is divided into chute A and chute B, chute A and chute B are interspersed, the wherein sense of rotation of chute A and the direction of rotation of rotatingshaft, the direction of rotation of the sense of rotation of chute B and chute A; On the excircle of catch A and catch B, be equipped with the direction gear piece that extend and that intermesh towards the other side, gear piece quantity on catch A is corresponding with chute A, and cover on chute A, gear piece quantity on catch B is corresponding with chute B, and cover on chute B, in gear piece, be all inlaid with the straight pin perpendicular to rotatingshaft, straight pin is arranged in chute and straight pin can slide along groove at chute.
The bottom surface contacting with equipment end cap in described labyrinth gland is provided with annular axial seal groove, in axial seal groove, is provided with axial sealing ring.
Labyrinth gland outboard flanges is stretched out in one end of described rotating ring, the position of stretching out is provided with at least one perpendicular to the bolt hole of rotatingshaft, jackscrew is installed in bolt hole, and the top of jackscrew withstands on rotatingshaft rotating ring is fixed on rotatingshaft, and rotatingshaft drives rotating ring rotation while rotating.
The inner ring surface contacting with rotatingshaft in described rotating ring is provided with annular radial seal groove, is provided with radial direction seal ring in radial seal groove.
Mazy type provided by the utility model is shut down bilateral sealing device and is had the following advantages: 1, when equipment downtime, rotatingshaft rotating speed is reduced to and stops operating gradually, in this process, spring ejects back-up ring A and back-up ring B in the opposite direction gradually under elastic force effect, catch A is subject to the active force of back-up ring A, at this active force lower stop piece, A slides along chute A, be pressed in gradually floating seal ring A and go up and push floating seal ring A, floating seal ring A is sandwiched between the exterior edge face of catch A and the outboard flanges interior edge face of labyrinth gland and contacts with both ends of the surface and be extruded distortion and realization sealing, catch B is subject to the active force of back-up ring B simultaneously, at this active force lower stop piece, B slides along chute B, be pressed in gradually floating seal ring B and go up and push floating seal ring B, floating seal ring B is sandwiched between the exterior edge face of catch B and the medial flange interior edge face of labyrinth gland and contacts with both ends of the surface and be extruded distortion and realization sealing.
2, because labyrinth gland outboard flanges is stretched out in one end of rotating ring, the position of stretching out is provided with at least one perpendicular to the bolt hole of rotatingshaft, jackscrew is installed in bolt hole, and the top of jackscrew withstands on rotatingshaft rotating ring is fixed on rotatingshaft, so rotatingshaft drives rotating ring rotation while rotating.And on the excircle of the boss at rotating ring middle part, be evenly distributed with four above chutes, chute in the shape of a spiral, and become 5～75 ° of angles with the center line of rotatingshaft, described chute is divided into chute A and chute B, chute A and chute B are interspersed, the wherein sense of rotation of chute A and the direction of rotation of rotatingshaft, the direction of rotation of the sense of rotation of chute B and chute A; Slip ring by parallel and be circular catch A and catch B and form, on the excircle of catch A and catch B, be equipped with the direction gear piece that extend and that intermesh towards the other side, gear piece quantity on catch A is corresponding with chute A, and cover on chute A, gear piece quantity on catch B is corresponding with chute B, and it is upper to cover chute B, is all inlaid with the straight pin perpendicular to rotatingshaft in gear piece, and straight pin is arranged in chute and straight pin can slide along groove at chute; Therefore when rotating ring rotates with rotatingshaft, straight pin drives catch A rotate and slide to equipment end cap direction along chute A with rotatingshaft under chute A drives, under driving, chute B drive catch B rotate and slide to the direction away from equipment end cap along chute B with rotatingshaft, until catch A contacts with the boss both sides end face on the excircle of rotating ring middle part respectively with catch B, catch A and catch B are squeezed in spring in rotating ring jointly.Now floating seal ring A and floating seal ring B are not subject to any extruding, in chamber, float, and can not cause wearing and tearing.And the grease in chamber now, under the effect of centrifugal force, converges in the oil storage tank in the gland of labyrinth and by the spill port or the outer spill port that are arranged in gland below, labyrinth and is back to equipment grease chamber, can not produce leakage.3, in the utility model, because the bottom surface contacting with equipment end cap in the gland of labyrinth is provided with annular axial seal groove, in axial seal groove, be provided with axial sealing ring, therefore can prevent that grease from leaking between labyrinth gland and equipment end cap.4, the inner ring surface contacting with rotatingshaft in rotating ring is provided with annular radial seal groove, is provided with radial direction seal ring in radial seal groove, therefore can prevent that grease from leaking out between rotatingshaft and rotating ring.
Accompanying drawing explanation
The mazy type that Fig. 1 provides for the utility model is shut down the overall structure schematic diagram of bilateral sealing device;
The mazy type that Fig. 2 provides for the utility model is shut down the sectional view of bilateral sealing device;
Fig. 3 is the structural representation of rotating ring;
Fig. 4 is the side view of rotating ring;
Fig. 5 is the sectional view of rotating ring;
Fig. 6 is the structural representation of slip ring;
Fig. 7 is the sectional view of slip ring.
In figure: 1-labyrinth gland, 2-rotatingshaft, 3-equipment end cap, 4-axial sealing ring, the outer spill port of 5-, spill port in 6-, 7-jackscrew, 8-chute A, 9-chute B, 10-radial direction seal ring, 11-back-up ring A, 12-back-up ring B, 13-floating seal ring A, 14-floating seal ring B, 15-positioning block, 16-rotating ring, 17-boss, 18-gear piece, 19-slip ring, 20-catch A, 21-catch B, 22-straight pin, 23-bolt hole, 24-spring, 25-through hole.
Embodiment
Below in conjunction with drawings and the specific embodiments, the utility model is done to detailed specific description, but protection domain of the present utility model is not limited to following examples.
The overall structure of the mazy type shutdown bilateral sealing device providing in the present embodiment as depicted in figs. 1 and 2; the rotating ring 16 that at least comprises labyrinth gland 1 and be enclosed within on rotatingshaft 2 and rotate with the axis; the inner ring surface contacting with rotatingshaft 2 in rotating ring 16 is provided with annular radial seal groove; in radial seal groove, be provided with radial direction seal ring 10, can prevent that grease from leaking out between rotatingshaft 2 and rotating ring 16.
Labyrinth gland 1 is mounted by means of bolts on equipment end cap 3, labyrinth gland annular chamber structure described in described labyrinth gland 1, its axial two ends are equipped with the flange towards rotating shaft direction, flange is provided with center hole and also and between rotatingshaft is provided with gap, between labyrinth gland two end boss, be provided with chamber, chamber internal diameter is greater than labyrinth gland two end boss center bores, on the wall of the chamber of chamber, be provided with at least one annular oil storage tank, below chamber, be provided with an interior spill port 6 and outer spill port 5.The bottom surface contacting with equipment end cap 3 in labyrinth gland 1 is provided with annular axial seal groove, is provided with axial sealing ring 4 in axial seal groove, can prevent that grease from leaking out between labyrinth gland 1 and equipment end cap 3.
The structure of described rotating ring 16 is as shown in Fig. 3, Fig. 4 and Fig. 5, described rotating ring 16 is cylindric, its endoporus coordinates and contacts with rotatingshaft, its middle part excircle is provided with the boss that external diameter is greater than two ends external diameter, the axial cross section of described boss 17 is rectangular, one end of rotating ring 16 is stretched out by the central hole of labyrinth gland outboard flanges and is provided with gap with flange center hole, and the other end of rotating ring 16 stretches in the center hole of labyrinth gland medial flange and is provided with gap with the center hole of labyrinth gland medial flange.Labyrinth gland outboard flanges is stretched out in one end of described rotating ring, the position of stretching out is provided with at least one perpendicular to the bolt hole 23 of rotatingshaft, jackscrew 7 is installed in bolt hole 23, the top of jackscrew 7 withstands on rotatingshaft 2 rotating ring 16 is fixed on rotatingshaft 2, and rotatingshaft 2 drives rotating ring 16 rotations while rotating.In the installation process of this device, by bolt hole 23, positioning block 15 is installed, one end of positioning block 15 is arranged in gap, and to guarantee keeping rational axial clearance between rotating ring 16 and slip ring and labyrinth gland 1, positioning block 15 is removed standby when sealing device installs.
The boss 17 at described rotating ring middle part is positioned at labyrinth gland, on the axial two side of boss 17, be respectively equipped with two corresponding annular grooves of position, in two annular grooves, be equipped with back-up ring, be respectively back-up ring A11 and back-up ring B12, its guide ring A11 is positioned at the side away from equipment end cap, back-up ring B12 is positioned at the side near equipment end cap, between the bottom of two annular grooves, be at least provided with three equally distributed through holes 25, in the present embodiment, be six, through hole 25 is connected two annular grooves, in through hole, be provided with spring 24, the two ends of spring 24 withstand on respectively on two back-up rings.
On the excircle of described boss 17, be evenly distributed with at least four chutes, chute in the shape of a spiral, and become 5～75 ° of angles with the center line of rotatingshaft, described chute is divided into chute A8 and chute B9, chute A8 and chute B9 are interspersed, the wherein sense of rotation of chute A8 and the direction of rotation of rotatingshaft, the direction of rotation of the sense of rotation of chute B9 and chute A.In the present embodiment, chute is provided with six, and wherein chute A8 and chute B9 are three.
The common chamber that forms an annular between described labyrinth gland 1 and rotating ring 16, in chamber, be provided with slip ring 19 and two floating seal rings, described slip ring 19 is enclosed within on the boss in the middle part of rotating ring and contacts with boss 17, the structure of described slip ring as shown in Figure 6 and Figure 7, slip ring 19 by parallel and be circular catch A20 and catch B21 and form, on the excircle of catch A20 and catch B21, be equipped with the direction gear piece 18 that extend and that intermesh towards the other side, gear piece quantity on catch A20 is corresponding with chute A8, and cover on chute A8, gear piece quantity on catch B21 is corresponding with chute B9, and cover on chute B9, in gear piece 18, be all inlaid with the straight pin 22 perpendicular to rotatingshaft, straight pin 22 is arranged in chute and straight pin 22 can slide along groove at chute.
Two floating seal rings are all enclosed within on rotating ring, are respectively floating seal ring A13 and floating seal ring B14, and floating seal ring A13 is between labyrinth gland outboard flanges and catch A20, and floating seal ring B14 is between labyrinth gland medial flange and catch B21.
In the present embodiment, when rotating ring rotates with rotatingshaft, straight pin drives catch A rotate and slide to equipment end cap direction along chute A with rotatingshaft under chute A drives, under driving, chute B drive catch B rotate and slide to the direction away from equipment end cap along chute B with rotatingshaft, until catch A contacts with the boss both sides end face on the excircle of rotating ring middle part respectively with catch B, catch A and catch B are squeezed in spring in rotating ring jointly.Now floating seal ring A and floating seal ring B are not subject to any extruding, in chamber, float, and can not cause wearing and tearing.And the grease in chamber now, under the effect of centrifugal force, converges in the oil storage tank in the gland of labyrinth and by the spill port or the outer spill port that are arranged in gland below, labyrinth and is back to equipment grease chamber, can not produce leakage.
When equipment downtime, rotatingshaft rotating speed is reduced to and stops operating gradually, in this process, spring ejects back-up ring A and back-up ring B in the opposite direction gradually under elastic force effect, catch A is subject to the active force of back-up ring A, at this active force lower stop piece A, along chute A, slide, be pressed in gradually floating seal ring A and go up and push floating seal ring A, floating seal ring A is sandwiched between the exterior edge face of catch A and the outboard flanges interior edge face of labyrinth gland and contacts with both ends of the surface and be extruded distortion and realization sealing; Catch B is subject to the active force of back-up ring B simultaneously, at this active force lower stop piece, B slides along chute B, be pressed in gradually floating seal ring B and go up and push floating seal ring B, floating seal ring B is sandwiched between the exterior edge face of catch B and the medial flange interior edge face of labyrinth gland and contacts with both ends of the surface and be extruded distortion and realization sealing.
Claims (6)
1. a mazy type is shut down bilateral sealing device, at least comprise labyrinth gland and the rotating ring that is enclosed within on rotatingshaft and rotates with the axis, labyrinth gland is mounted by means of bolts on equipment end and covers, it is characterized in that: described rotating ring is cylindric, its endoporus coordinates and contacts with rotatingshaft, its middle part excircle is provided with the boss that external diameter is greater than two ends external diameter, the axial cross section of described boss is rectangular, one end of rotating ring is stretched out and is provided with gap with center hole by the place, outer side center hole of labyrinth gland, the other end of rotating ring stretches in the center hole inside the gland of labyrinth and is provided with gap with the center hole of labyrinth gland medial flange, the boss at rotating ring middle part is positioned at labyrinth gland, on the axial two side of boss, be respectively equipped with two corresponding annular grooves of position, in two annular grooves, be equipped with back-up ring, be respectively back-up ring A and back-up ring B, its guide ring A is positioned at the side away from equipment end cap, and back-up ring B is positioned at the side near equipment end cap, between the bottom of two annular grooves, be at least provided with three equally distributed through holes, through hole is connected two annular grooves, is provided with spring in through hole, and the two ends of spring withstand on respectively on two back-up rings, the common chamber that forms an annular between described labyrinth gland and rotating ring, in chamber, be provided with slip ring and two floating seal rings, described slip ring sleeve is on the boss at rotating ring middle part and contact with boss, described slip ring by parallel and be circular catch A and catch B and form, two floating seal rings are all enclosed within on rotating ring, be respectively floating seal ring A and floating seal ring B, floating seal ring A is between labyrinth gland and catch A, and floating seal ring B is between labyrinth gland and catch B.
2. mazy type according to claim 1 is shut down bilateral sealing device; it is characterized in that: described labyrinth gland annular chamber structure; its axial two ends are equipped with the flange towards rotating shaft direction; flange is provided with center hole and also and between rotatingshaft is provided with gap; between labyrinth gland two end boss, be provided with chamber; chamber internal diameter is greater than labyrinth gland two end boss center bores; on the wall of the chamber of chamber, be provided with at least one annular oil storage tank, below chamber, be provided with an interior spill port and outer spill port.
3. mazy type according to claim 1 is shut down bilateral sealing device, it is characterized in that: on the excircle of described boss, be evenly distributed with at least four chutes, chute in the shape of a spiral, and become 5～75 ° of angles with the center line of rotatingshaft, described chute is divided into chute A and chute B, chute A and chute B are interspersed, the wherein sense of rotation of chute A and the direction of rotation of rotatingshaft, the direction of rotation of the sense of rotation of chute B and chute A; On the excircle of catch A and catch B, be equipped with the direction gear piece that extend and that intermesh towards the other side, gear piece quantity on catch A is corresponding with chute A, and cover on chute A, gear piece quantity on catch B is corresponding with chute B, and cover on chute B, in gear piece, be all inlaid with the straight pin perpendicular to rotatingshaft, straight pin is arranged in chute and straight pin can slide along groove at chute.
4. mazy type according to claim 1 is shut down bilateral sealing device, it is characterized in that: the bottom surface contacting with equipment end cap in described labyrinth gland is provided with annular axial seal groove, in axial seal groove, is provided with axial sealing ring.
5. mazy type according to claim 1 is shut down bilateral sealing device; it is characterized in that: labyrinth gland outboard flanges is stretched out in one end of described rotating ring; the position of stretching out is provided with at least one perpendicular to the bolt hole of rotatingshaft; jackscrew is installed in bolt hole; the top of jackscrew withstands on rotatingshaft rotating ring is fixed on rotatingshaft, and rotatingshaft drives rotating ring rotation while rotating.
6. mazy type according to claim 1 is shut down bilateral sealing device, it is characterized in that: the inner ring surface contacting with rotatingshaft in described rotating ring is provided with annular radial seal groove, is provided with radial direction seal ring in radial seal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420220744.XU CN203796968U (en) | 2014-04-30 | 2014-04-30 | Labyrinth shutdown two-way seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420220744.XU CN203796968U (en) | 2014-04-30 | 2014-04-30 | Labyrinth shutdown two-way seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203796968U true CN203796968U (en) | 2014-08-27 |
Family
ID=51379180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420220744.XU Expired - Fee Related CN203796968U (en) | 2014-04-30 | 2014-04-30 | Labyrinth shutdown two-way seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203796968U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329468A (en) * | 2014-10-23 | 2015-02-04 | 武汉新置密封科技有限公司 | Two-way floating seal device |
-
2014
- 2014-04-30 CN CN201420220744.XU patent/CN203796968U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329468A (en) * | 2014-10-23 | 2015-02-04 | 武汉新置密封科技有限公司 | Two-way floating seal device |
| CN104329468B (en) * | 2014-10-23 | 2016-08-24 | 武汉新置密封科技有限公司 | A kind of two-way floating sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DENG LUNSHENG Free format text: FORMER OWNER: HUBEI XINZHI SEALING ELEMENT CO., LTD. Effective date: 20150325 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150325 Address after: 435300, Hubei, Huanggang province Qichun River town pay fan neighborhood committee, Oriental Garden 5-A-1301 Patentee after: Deng Lunsheng Address before: No. 435300 Huanggang Road, Hubei County in Qichun Province Yang Si Ling Industrial Park, energy-saving lamps Patentee before: Hubei Xinzhi Sealing Element Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: HUBEI XINZHI SEALING ELEMENT CO., LTD. Free format text: FORMER OWNER: DENG LUNSHENG Effective date: 20150430 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150430 Address after: No. 435300 Huanggang Road, Hubei County in Qichun Province Yang Si Ling Industrial Park Patentee after: Hubei Xinzhi Sealing Element Co., Ltd. Address before: 435300, Hubei, Huanggang province Qichun River town pay fan neighborhood committee, Oriental Garden 5-A-1301 Patentee before: Deng Lunsheng |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 Termination date: 20150430 |
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| EXPY | Termination of patent right or utility model |