CN202732268U - Vacuumizing and compressing device of double-acting hydraulic injection type double air cylinder - Google Patents
Vacuumizing and compressing device of double-acting hydraulic injection type double air cylinder Download PDFInfo
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- CN202732268U CN202732268U CN 201220242373 CN201220242373U CN202732268U CN 202732268 U CN202732268 U CN 202732268U CN 201220242373 CN201220242373 CN 201220242373 CN 201220242373 U CN201220242373 U CN 201220242373U CN 202732268 U CN202732268 U CN 202732268U
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Abstract
The utility model provides a vacuumizing and compressing device of a double-acting hydraulic injection type double air cylinder, belonging to the technical field of machines and solving the problem that the compressing abilities or vacuumizing abilities of piston vacuum pump and piston air compressor all-in-one machines in the prior art can not meet the requirements of actual application. The device comprises a hydraulic cylinder body and two air cylinder bodies, wherein the air cylinder bodies are respectively connected at the two ends of the hydraulic cylinder body; a hydraulic cylinder piston is arranged in the hydraulic cylinder body; a double ejector rod with two ends respectively extending out of the hydraulic cylinder body to enter the air cylinder bodies is fixed on the hydraulic cylinder piston; air cylinder pistons fixed at the corresponding ends of the double ejector rod are arranged in the two air cylinder bodies respectively; and inlet valves and outlet valves, which are communicated with air cylinder chambers, are arranged at the ends of the air cylinder bodies on the two sides of each air cylinder piston respectively. The device can integrate air compressing and vacuumizing, achieve three purposes and meet the requirements of actual use.
Description
Technical field
The utility model belongs to field of mechanical technique, relates to vacuumizing and compression set of the two cylinders of a kind of double-action hydraulic injection-type.
Background technique
The machinery that gas bleeding makes device interior reach vacuum from equipment is called vacuum pump.Vacuum pump can roughly be divided into reciprocating vacuum pump, rotary vaccum pump and jet type vacuum pump according to the difference of motion mode.Wherein, reciprocating vacuum pump claims again piston type vacuum pump, and it is that the swept volume generating period variation of cylinder is bled.Piston type vacuum pump only carries out the cylinder chamber of piston one side is indoor in pumping process, and the cylinder body chamber of piston opposite side is in idle condition, a kind of single structural type, working efficiency is low, about the operating air pressure in two chambeies inhomogeneous, so that the Sealing on the piston is subject to one-sided active force is large, is easy to wearing and tearing and sealing effect and haves much room for improvement.
Air compressor normally pumps air in the gas holder with air pump, and piston air pump is by the to-and-fro motion of motivational drive piston rod pushing piston, and the unidirectional air feed of one-way intake, piston power when backhaul is flogging a dead horse, and this is single-acting cylinder.In order to address this problem, someone discloses a kind of double-acting cylinder, and its structural formula adopts two pistons to form lumen, carries out air-breathing and exhaust by lumen.In addition, the Chinese patent application before me numbers 200820120698.0, name are called " single pump piston type double-acting air-pumping device of air compressor " and disclose the structures such as pore is set at piston and piston rod and realize double-acting scheme.
From above-mentioned ordinary skill as can be known, although piston type vacuum pump has adopted identical motion principle with piston type air compressor, but do not occur equipment that piston type vacuum pump and piston type air compressor are integrated on the existing market, it mainly is to be difficult to solve following problem:
1, adopted motor as power, motor is arranged on one-sided, also the driving mechanism by the centre transmits, so that the requirement that the compressed capability of piston type vacuum pump and piston type air compressor integrated machine or vacuum capability do not reach practical application, can not replace multistage compression or vacuumizes.
2, because air compressing and/or to vacuumize the active force that piston is subject to larger, the seal ring on the piston will bear larger pressure, causes the sealing effect variation, so that the compressed capability of integrated machine or vacuum capability do not reach the requirement of practical application.
Summary of the invention
There are the problems referred to above in the utility model for existing technology, vacuumizing and compression set of the two cylinders of a kind of double-action hydraulic injection-type proposed, this device can make air compressing and vacuumize the machine of being integrated into one, can carry out air compressing, vacuumize to vacuumize simultaneously with air compressing and carry out, realize a machine three-use, and can reach the requirement of actual use.
The utility model is realized by following technical proposal: the vacuumizing and compression set of the two cylinders of a kind of double-action hydraulic injection-type, comprise a hydraulic cylinder body and two cylinder blocks, it is characterized in that, described cylinder block is connected to the two ends of hydraulic cylinder body, in described hydraulic cylinder body, be provided with hydraulic cylinder piston, fix two ends at hydraulic cylinder piston and stretch out respectively two rods that hydraulic cylinder body enters into cylinder block, in two cylinder blocks, be respectively equipped with and be fixed on the described pair of cylinder piston on the rod respective end, be respectively equipped with the suction valve and the gas outlet valve that are communicated with cylinder chamber in the cylinder block end of described each cylinder piston both sides.
Owing to adopting oil hydraulic cylinder as ram, can and vacuumize the driving force that provides larger for pressurized air, and adopt left and right sides distributed frame, also for oil hydraulic cylinder provides preferably mechanical property, increase the driving force of oil hydraulic cylinder.Drive two rod move left and right by hydraulic cylinder piston, two rods drive two cylinder piston move left and right, owing to being on same two rods, so two cylinder pistons move synchronously.When two cylinder pistons are moved to the left simultaneously, the left chamber of cylinder extrudes air by gas outlet valve, the suction valve air inlet in the right chamber of cylinder is when two cylinder pistons move right simultaneously, the air in the right chamber of cylinder extrudes by gas outlet valve, the suction valve air inlet in the left chamber of cylinder.Therefore, all can there be two suction valves to carry out air inlet in the cylinder piston move left and right, have two outlet valves to carry out exhaust, the piston no-idle running.When using as compressor, connecting outlet valve can compress air; During as vacuum pump, connecting suction valve can vacuumize equipment; Vacuumize when using simultaneously as compression, connect the outlet valve of cylinder piston one side cavity as compressor, connect the suction valve of cylinder piston opposite side chamber as vacuum pump.
The two cylinders of above-mentioned double-action hydraulic injection-type vacuumize with compression set in, described cylinder piston comprises two pressing plates and is arranged on ring packing piece between the pressing plate, described ring packing piece has elasticity, the external diameter of described ring packing piece and cylinder block internal diameter are complementary, ring packing piece internal diameter and above-mentioned two rod external diameters are complementary, described pressing plate is enclosed within on two rods and with two rods and is slidingly connected, and is provided with the limit structure of restriction pressing plate sliding distance at two rods.
Be different from common cylinder piston structure, cylinder piston of the present utility model is take the ring packing piece as main body, its external diameter and cylinder block internal diameter keep close contact, its internal diameter contacts with two rods, when cylinder is bled or is carried out exhaust, because the pressure of cylinder block both sides is different, the pressing plate of the side that pressure is large can push annular sealing block, and the limited structure of the pressing plate limit of opposite side is used as barrier plate, the ring packing piece can produce resiliently deformable under extruding, the external diameter of ring packing piece increases and makes the sealing between ring packing piece and the cylinder block tightr, and the internal diameter of ring packing piece dwindles and makes the sealing between ring packing piece and the two rod also tightr.Pressure in the piston both sides is larger, so that the sealing effect of ring packing piece is better.Make air compressing can reach better effect with vacuumizing by this piston structure.
The two cylinders of above-mentioned double-action hydraulic injection-type vacuumize with compression set in, the bi-side of described ring packing piece are conical surface, the edge of above-mentioned pressing plate turns up and forms the pressing plate conical surface that is complementary with above-mentioned ring packing piece conical surface, and the pressing plate conical surface is fitted on the ring packing piece conical surface, and pressing plate inner side end and ring packing piece side have the gap.This structure of ring packing piece has further increased sealability so that the area that the ring packing piece contacts with cylinder block increases.The conical surface structural design of pressing plate so that ring packing piece conical surface part also can tightly be pressed on the inboard wall of cylinder block, increases sealing effect so that pressing plate has one towards the active force of casing wall when the annular sealing block of extruding.Pressing plate inner side end and ring packing piece side have the gap provides slip for pressing plate distance.
The two cylinders of above-mentioned double-action hydraulic injection-type vacuumize with compression set in, be provided with seal ring between described ring packing piece and the two rod, described seal ring is encapsulated in the ring packing piece.Can further seal by seal ring.
The two cylinders of above-mentioned double-action hydraulic injection-type vacuumize with compression set in, described limit structure comprises shoulder block and the nut that is opened on two rods, described nut is threaded connection two to go out on the boom end.Can comply with one's wishes by nut and to regulate the initial rate of tension of annular sealing block.
The two cylinders of above-mentioned double-action hydraulic injection-type vacuumize with compression set in, described hydraulic cylinder body is connected with the hydraulic pressure automatic control mechanism, be provided with the feeler mechanism of detecting the cylinder piston stroke in the described cylinder block, described stroke detection mechanism is connected with above-mentioned hydraulic pressure automatic control mechanism.Realize the automatic reciprocating of this device by this structure.
The two cylinders of above-mentioned double-action hydraulic injection-type vacuumize with compression set in, described hydraulic pressure automatic control mechanism comprises oil hydraulic pump, oil-way system and central processing unit (CPU), the oil pipe one and the oil pipe two that connect at described hydraulic cylinder body, described oil pipe one is connected with oil pipe and is connected with oil hydraulic pump by oil-way system, be provided with the solenoid valve that changes the oil circuit direction in oil-way system, described solenoid valve is connected with central processing unit (CPU).Solenoid valve in the central processing unit (CPU) oil circuit control system is controlled hydraulic cylinder works.
The two cylinders of above-mentioned double-action hydraulic injection-type vacuumize with compression set in, described feeler mechanism comprises the sensor that is arranged on the cylinder block end, described sensor is positioned on the shaft axis of two rods and facing to cylinder piston, and described sensor is connected with above-mentioned central processing unit (CPU).Sensor detects the shift motion of cylinder piston, detect cylinder piston near the time send signal to central processing unit (CPU), central processing unit (CPU) control solenoid valve makes oil-way system reverse, drives cylinder piston and moves back and forth.
Compared with prior art, two the vacuumizing with compression set of cylinder of this double-action hydraulic injection-type have the following advantages:
1, this voltage indicating device makes air compressing and vacuumizes the machine of being integrated into one, and can carry out air compressing, vacuumize with air compressing and vacuumize simultaneously and carry out, and realizes a machine three-use, and can reach the requirement of actual use.At present, the highpressure of one-level compression has reached 100 kilograms per centimeter
2, can replace multistage compression mechanism, anti-then also can realize higher degree of vacuum.
2, utilize the promotion of hydraulic pressure, cylinder piston can both do work back and forth, and double-action is without idle running, and is automatic reciprocating, and compression stroke is long, and available gas is many, upper gas or bleed soon, and efficient is high, and fault simple in structure is few.
3, cylinder piston of the present utility model adopts the mechanism of pressing plate and ring packing piece, and pressing plate is slidingly connected, so that the sealing between ring packing piece and the two rod, between ring packing piece and the cylinder block is high, and in the reciprocal process of cylinder piston, sealing increases along with the raising of pressure difference, and in the stroke of cylinder piston, the cylinder piston major part is in the neutral position, the pressure difference at the pressure ratio two ends of intermediate portion is little, so the ring packing piece is not easy to wear.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of cylinder piston.
Fig. 3 is the structural representation of hydraulic pressure automatic control mechanism.
Among the figure, 1, hydraulic cylinder body; 2, cylinder block; 21, suction valve; 22, gas outlet valve; 3, two rods; 31, shoulder block; 4, cylinder piston; 41, pressing plate; 411, pressing plate conical surface; 412, pressing plate inner side end; 42, ring packing piece; 421, ring packing piece conical surface; 422, ring packing piece side; 5, hydraulic cylinder piston; 6, seal ring; 7, nut; 8, oil hydraulic pump; 9, oil-way system; 91, solenoid valve; 10, central processing unit (CPU); 11, oil pipe one; 12, oil pipe two; 13, sensor; 14, seal ring.
Embodiment
Below be specific embodiment of the utility model, and by reference to the accompanying drawings the technical solution of the utility model be further described, but the utility model is not limited to these embodiments.
As shown in Figure 1, two the vacuumizing with compression set of cylinder of this double-action hydraulic injection-type comprise hydraulic cylinder body 1, cylinder block 2, two rod 3, cylinder piston 4 and hydraulic cylinder piston 5, and feeler mechanism and hydraulic pressure automatic control mechanism, be used for realization with air compressing and vacuumize the function that is integrated into one, can carry out air compressing, vacuumize with air compressing and vacuumize simultaneously and carry out, realize a machine three-use, and can reach the requirement of actual use.
Specifically, cylinder block 2 has two, be connected to symmetrically respectively the two ends of hydraulic cylinder body 1, in hydraulic cylinder body 1, be provided with two ends and stretch out respectively two rods 3 that hydraulic cylinder body 1 enters into cylinder block 2, be provided with the seal ring 6 that prevents that fluid from spilling between two rods 3 and the hydraulic cylinder body 1, fluid in the oil hydraulic cylinder also plays desirable lubricated effect is carried out on the surface of two rods 3, realizes real nothing oil.In hydraulic cylinder body 1, be provided with hydraulic cylinder piston 5, at hydraulic cylinder piston 5 fixing two rods 3, in two cylinder blocks 2, be respectively equipped with the cylinder piston 4 that is fixed on two 3 two ends of rod, be respectively equipped with the suction valve 21 and the gas outlet valve 22 that are communicated with cylinder chamber in cylinder block 2 ends of each cylinder piston 4 both sides, suction valve 21 and gas outlet valve 22 are arranged on cylinder block 2 ends can be with the stroke of sufficient cylinder piston 4.As can be known, this device has four suction valves 21 and four gas outlet valves 22.
Owing to need to two cylinders be carried out simultaneously air compressing or vacuumize, vacuumize while perhaps carry out air compressing, therefore, larger to the sealing requirements between cylinder piston 4 and the cylinder block.As shown in Figure 2, this device adopts the piston structure of following structure:
In order further to increase sealing between ring packing piece 42 and the two rod 3, between ring packing piece 42 and two rod 3, be provided with seal ring 14, seal ring 14 is encapsulated in the ring packing piece 42.In order further to increase the sealability between sealing block and the casing wall, the bi-side of ring packing piece 42 are ring packing piece conical surface 421, the edge of pressing plate 41 turns up and forms the pressing plate conical surface 411 that is complementary with ring packing piece conical surface 421, the width of ring packing piece conical surface 421 is greater than the width of pressing plate conical surface 411, and pressing plate conical surface 411 is fitted on the ring packing piece conical surface 421, has the gap between pressing plate inner side end 412 and the ring packing piece side 422.Pressing plate 41 has one towards the active force of casing wall when the annular sealing block 42 of extruding, so that ring packing piece conical surface 421 parts also can tightly be pressed on the inboard wall of cylinder block, increase sealing effect.
Limit structure comprises shoulder block 31 and the nut 7 that is opened on two rods 3, and nut 7 is threaded connection on two rods 3 ends.Can comply with one's wishes by nut 7 and to regulate the initial rate of tension of annular sealing block 42.
As shown in Figure 3, in order to realize the Automatic continuous work of this voltage indicating device, hydraulic cylinder body 1 is connected with the hydraulic pressure automatic control mechanism, is provided with the feeler mechanism of detecting cylinder piston 4 strokes in the cylinder block 2, and stroke detection mechanism is connected with the hydraulic pressure automatic control mechanism.The hydraulic pressure automatic control mechanism comprises oil hydraulic pump 8, oil-way system 9 and central processing unit (CPU) 10, oil pipe 1 and oil pipe 2 12 in hydraulic cylinder body 1 connection, oil pipe 1 is connected with oil pipe and 12 is connected with oil hydraulic pump 8 by oil-way system 9, be provided with the solenoid valve 91 that changes the oil circuit direction in oil-way system 9, solenoid valve 91 is connected with central processing unit (CPU) 10.Oil-way system 9 is common oil hydraulic cylinder oil-way system.Feeler mechanism comprises the sensor 13 that is arranged on cylinder block 2 ends, sensor 13 is positioned on the shaft axis of two rods 3 and facing to cylinder piston 4, sensor 13 is connected with central processing unit (CPU) 10, sensor 13 detects the shift motion of cylinder piston 4, detect cylinder piston 4 near the time send signal to central processing unit (CPU) 10, central processing unit (CPU) 10 control solenoid valves make oil-way system 9 reverse, drive cylinder piston 4 oppositely mobile.Sensor 13 can use magnetic induction sensor.Magnetic induction sensor is two, is separately positioned in the outer end of two cylinder blocks.As another alternative scheme, sensor 13 is infrared senor, and quantity can be one, detects distance signal and exports to central processing unit (CPU).
The working procedure of this device is as follows: drive two rod 3 move left and right by hydraulic cylinder piston 5, two rods 3 drive cylinder piston 4 move left and right, owing to being on same two rods 3, so two cylinder pistons 4 move synchronously, when two cylinder pistons 4 are moved to the left simultaneously, the left chamber of cylinder extrudes air by gas outlet valve 22, suction valve 21 air inlets in the right chamber of cylinder, when two cylinder pistons 4 move right simultaneously, the right chamber of cylinder extrudes suction valve 21 air inlets in the left chamber of cylinder with air by gas outlet valve 22.Therefore, have two suction valves 21 in cylinder piston 4 move left and right and carry out air inlet, have two outlet valves to carry out exhaust, the piston no-idle running.When using as compressor, connecting outlet valve can compress air; During as vacuum pump, connecting suction valve 21 can vacuumize equipment; As compression with vacuumize when using simultaneously, connect the outlet valve of cylinder piston 4 one side cavity as compressor, connect the suction valve 21 of cylinder piston 4 opposite side chambers as vacuum pump.
Specific embodiment described herein only is to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has more used the terms such as hydraulic cylinder body 1, cylinder block 2, suction valve 21, gas outlet valve 22, two rod 3, shoulder block 31, cylinder piston 4, pressing plate 41, pressing plate conical surface 411, ring packing piece 42, ring packing piece conical surface 421, hydraulic cylinder piston 5, seal ring 6, nut 7, oil hydraulic pump 8, oil-way system 9, solenoid valve 91, central processing unit (CPU) 10, oil pipe 1, oil pipe 12, sensor 13, seal ring 14, do not get rid of the possibility of using other term.Using these terms only is in order to describe more easily and explain essence of the present utility model; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (8)
1. the two cylinders of double-action hydraulic injection-type vacuumizes and compression set, comprise a hydraulic cylinder body (1) and two cylinder blocks (2), it is characterized in that, described cylinder block (2) is connected to the two ends of hydraulic cylinder body (1), in described hydraulic cylinder body (1), be provided with hydraulic cylinder piston (5), fix two ends at hydraulic cylinder piston (5) and stretch out respectively two rods (3) that hydraulic cylinder body (1) enters into cylinder block (2), in two cylinder blocks (2), be respectively equipped with the cylinder piston (4) that is fixed on described pair of rod (3) respective end, be respectively equipped with the suction valve (21) and the gas outlet valve (22) that are communicated with cylinder chamber in cylinder block (2) end of described each cylinder piston (4) both sides.
2. the two cylinders of double-action hydraulic injection-type according to claim 1 vacuumizes and compression set, it is characterized in that, described cylinder piston (4) comprises two pressing plates (41) and is arranged on ring packing piece (42) between the pressing plate (41), described ring packing piece (42) has elasticity, the external diameter of described ring packing piece (42) and cylinder block (2) internal diameter are complementary, ring packing piece (42) internal diameter and above-mentioned two rods (3) external diameter are complementary, described pressing plate (41) is enclosed within two rods (3) and upward and with two rods (3) is slidingly connected, and is provided with the limit structure of restriction pressing plate (41) sliding distance at two rods (3).
3. the two cylinders of double-action hydraulic injection-type according to claim 2 vacuumizes and compression set, it is characterized in that, the bi-side of described ring packing piece (42) are conical surface, the edge of above-mentioned pressing plate (41) turns up and forms the pressing plate conical surface (411) that is complementary with above-mentioned ring packing piece conical surface (421), and pressing plate conical surface (411) is fitted on the ring packing piece conical surface (421), and pressing plate inner side end (412) has the gap with ring packing piece side (412).
4. according to claim 2 or the vacuumizing and compression set of the two cylinders of 3 described double-action hydraulic injection-types, it is characterized in that, be provided with seal ring (14) between described ring packing piece (42) and the two rod (3), described seal ring (14) is encapsulated in the ring packing piece (42).
5. the two cylinders of double-action hydraulic injection-type according to claim 2 vacuumizes and compression set, it is characterized in that, described limit structure comprises shoulder block (31) and the nut (7) that is opened on two rods (3), and described nut (7) is threaded connection on two rods (3) end.
6. according to claim 1 and 2 or the vacuumizing and compression set of the two cylinders of 5 described double-action hydraulic injection-types, it is characterized in that, described hydraulic cylinder body (1) is connected with the hydraulic pressure automatic control mechanism, be provided with the feeler mechanism of detecting cylinder piston (4) stroke in the described cylinder block (2), described stroke detection mechanism is connected with above-mentioned hydraulic pressure automatic control mechanism.
7. the two cylinders of double-action hydraulic injection-type according to claim 6 vacuumizes and compression set, it is characterized in that, described hydraulic pressure automatic control mechanism comprises oil hydraulic pump (8), oil-way system (9) and central processing unit (CPU) (10), oil pipe one (11) and oil pipe two (12) in described hydraulic cylinder body (1) connection, described oil pipe one (11) are connected with oil pipe (12) be connected with oil hydraulic pump (8) by oil-way system (9), be provided with the solenoid valve (91) that changes the oil circuit direction in oil-way system (9), described solenoid valve (91) is connected with central processing unit (CPU) (10).
8. the two cylinders of double-action hydraulic injection-type according to claim 7 vacuumizes and compression set, it is characterized in that, described feeler mechanism comprises the sensor (13) that is arranged on cylinder block (2) end, described sensor (13) is positioned on the shaft axis of two rods (3) and facing to cylinder piston (4), and described sensor (13) is connected with above-mentioned central processing unit (CPU) (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220242373 CN202732268U (en) | 2012-05-24 | 2012-05-24 | Vacuumizing and compressing device of double-acting hydraulic injection type double air cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220242373 CN202732268U (en) | 2012-05-24 | 2012-05-24 | Vacuumizing and compressing device of double-acting hydraulic injection type double air cylinder |
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| Publication Number | Publication Date |
|---|---|
| CN202732268U true CN202732268U (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220242373 Expired - Fee Related CN202732268U (en) | 2012-05-24 | 2012-05-24 | Vacuumizing and compressing device of double-acting hydraulic injection type double air cylinder |
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| CN (1) | CN202732268U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678507A (en) * | 2012-05-24 | 2012-09-19 | 陈人德 | Double-acting hydraulic ejecting type vacuumizing and compressing device of double cylinders |
| CN104386297A (en) * | 2014-11-17 | 2015-03-04 | 重庆三贵机械制造有限公司 | Automatic bag feeding aspirator pump |
-
2012
- 2012-05-24 CN CN 201220242373 patent/CN202732268U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678507A (en) * | 2012-05-24 | 2012-09-19 | 陈人德 | Double-acting hydraulic ejecting type vacuumizing and compressing device of double cylinders |
| CN102678507B (en) * | 2012-05-24 | 2015-03-18 | 陈人德 | Double-acting hydraulic ejecting type vacuumizing and compressing device of double cylinders |
| CN104386297A (en) * | 2014-11-17 | 2015-03-04 | 重庆三贵机械制造有限公司 | Automatic bag feeding aspirator pump |
| CN104386297B (en) * | 2014-11-17 | 2020-06-02 | 重庆三贵机械制造有限公司 | Automatic bag feeding air suction pump |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20150524 |
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| EXPY | Termination of patent right or utility model |