CN104214387B - A kind of gas safety valve - Google Patents
A kind of gas safety valve Download PDFInfo
- Publication number
- CN104214387B CN104214387B CN201410428988.1A CN201410428988A CN104214387B CN 104214387 B CN104214387 B CN 104214387B CN 201410428988 A CN201410428988 A CN 201410428988A CN 104214387 B CN104214387 B CN 104214387B
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- Prior art keywords
- valve
- connecting rod
- piston
- air outlet
- gas safety
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- 101100532451 Rattus norvegicus Slc22a17 gene Proteins 0.000 claims abstract description 18
- 101000623895 Bos taurus Mucin-15 Proteins 0.000 claims abstract description 16
- 238000010943 off-gassing Methods 0.000 claims abstract description 4
- 238000009413 insulation Methods 0.000 claims description 8
- 239000003292 glue Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 241000238631 Hexapoda Species 0.000 claims description 4
- 239000006260 foam Substances 0.000 claims description 4
- 239000012188 paraffin wax Substances 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 239000001993 wax Substances 0.000 claims description 4
- 239000010425 asbestos Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 229910052895 riebeckite Inorganic materials 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 64
- 239000000567 combustion gas Substances 0.000 abstract description 13
- 238000004880 explosion Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 241000168254 Siro Species 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/36—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position
- F16K17/38—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature
- F16K17/383—Safety valves; Equalising valves, e.g. pressure relief valves actuated in consequence of extraneous circumstances, e.g. shock, change of position of excessive temperature the valve comprising fusible, softening or meltable elements, e.g. used as link, blocking element, seal, closure plug
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
The invention provides a kind of gas safety valve, including intake valve and air outlet valve, described air outlet valve includes elastic component I, piston switch, meltable stop block and the switch jacking block set gradually along outgassing direction, described piston switch includes support bar, piston mandril and connecting rod, described switch jacking block includes supporting seat and contiguous block, relief valve that described intake valve includes setting gradually along airintake direction, limiting plate, piston boit, this gas safety valve high safety of elastic component II, it is possible to automatically block combustion gas when Gas Pipe exit catches fire.
Description
Technical field
The present invention relates to a kind of relief valve, particularly relate to a kind of gas safety valve being arranged on fuel gas conveying pipe.
Background technology
Along with the development of national economy, people's lives condition is constantly improved, combustion gas as a kind of quickly, convenient, cleaning, the fuel of health popularized in man of urban and rural residents.But, owing to combustion gas is inflammable and explosive, once because connecting tube is aging or natural and man-made calamities produce QI KOU and catch fire, frequently can lead to more serious explosion accident, cause any property loss or casualties.Gas safety valve of the prior art, it is impossible to automatically block combustion gas when catching fire at gas outlet, safety is difficult to be guaranteed.Therefore, how automatically to block combustion gas when Gas Pipe exit catches fire, it is to avoid explosion accident occurs, it is ensured that the safety of user, be those skilled in the art's technical problems urgently to be resolved hurrily.
Summary of the invention
It is desirable to provide a kind of gas safety valve, this gas safety valve high safety, it is possible to automatically block combustion gas when Gas Pipe exit catches fire, for achieving the above object, the present invention provides following technical scheme:
A kind of gas safety valve, including intake valve and air outlet valve, described air outlet valve includes elastic component I, piston switch, meltable stop block and the switch jacking block set gradually along outgassing direction；Described piston switch includes support bar, piston mandril and connecting rod, one end of described support bar is installed on the inwall of air outlet valve by rotating shaft, being connected with piston mandril and connecting rod respectively on the other end, wherein piston mandril is fixing with on support bar, and connecting rod is connected with support bar by rotating shaft；Described switch jacking block includes supporting seat and contiguous block, and described support seat is installed on the inwall of air outlet valve, and described contiguous block is installed on support seat, the other end and the end thereof contacts of connecting rod；Described meltable stop block is located at connecting rod both sides or entirety wraps connecting rod, and between connecting rod and contiguous block and the inwall of air outlet valve, the connecting rod made by the obstruction of meltable stop block and contiguous block keep connection status；The two ends of described elastic component I are respectively arranged in air outlet valve end valve wall and support bar away from one end of the inwall of air outlet valve, and elastic component I is in compressive state；
Relief valve that described intake valve includes setting gradually along airintake direction, limiting plate, piston boit, elastic component II；Described relief valve is divided into upper and lower two parts, and during upper and lower two part occlusions, gas circuit disconnects；Described limiting plate is located on relief valve；On described elastic component II piston set post, its one end is fixing with the jacking block on piston boit to be connected, and the other end is fixing with limiting plate to be connected；Described piston boit one end contacts with piston mandril end, and the other end is fixing with the latter half of relief valve after passing limiting plate to be connected.
Preferably, in above-mentioned gas safety valve, described connecting rod includes two sections be mutually flexibly connected, and meltable stop block is at least located at the both sides of this junction point of two sections, or wraps this junction point of two sections.
Preferably, in above-mentioned gas safety valve, at two sections of connecting rod contact points, wherein the end of a section is cambered surface spill, and the end of another section is the cambered surface convex matched with spill.
Preferably, in above-mentioned gas safety valve, described connecting rod is cambered surface spill near the end of valve port of giving vent to anger；Described contiguous block is match spherical.
Preferably, in above-mentioned gas safety valve, described elastic component I and elastic component II are spring.
Preferably, in above-mentioned gas safety valve, the material of described meltable stop block is paraffin, insect wax, foam plastics or resin.
Preferably, in above-mentioned gas safety valve, the end of described intake valve is provided with gas tank interface glue.
Preferably, in above-mentioned gas safety valve, the end of described intake valve is provided with screw thread.
Preferably, in above-mentioned gas safety valve, described relief valve is provided with detector, it is possible to detect detection gas leakage situation.
Preferably, in above-mentioned gas safety valve, the outer wall of described intake valve is provided with thermal insulation layer, and described thermal insulation layer is built with asbestos or sand.
The gas safety valve that the present invention provides can automatically block combustion gas when Gas Pipe exit catches fire, it is to avoid explosion accident occurs, it is ensured that the safety of user.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of gas safety valve of the present invention.
The sequence number of Fig. 1 and Each part and title are as follows:
1, intake valve；2, air outlet valve；3, elastic component I；4, piston switch；5, meltable stop block；6, switch jacking block；7, support bar；8, piston mandril；9, connecting rod；10, seat is supported；11, contiguous block；12, air outlet valve end valve wall；13, relief valve；14, limiting plate；15, piston boit；16, elastic component II；17, jacking block；18, gas tank interface glue；19, screw thread；20, thermal insulation layer.
Detailed description of the invention
The invention discloses a kind of gas safety valve, this gas safety valve high safety, it is possible to automatically block combustion gas when Gas Pipe exit catches fire.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
Refer to the structural representation that Fig. 1, Fig. 1 are gas safety valves of the present invention.
A kind of gas safety valve, including intake valve 1 and air outlet valve 2, described air outlet valve 2 includes elastic component I 3, piston switch 4, meltable stop block 5 and the switch jacking block 6 set gradually along outgassing direction；Described piston switch 4 includes support bar 7, piston mandril 8 and connecting rod 9, one end of described support bar 7 is installed on the inwall of air outlet valve 2 by rotating shaft, it is connected with piston mandril 8 and connecting rod 9 respectively on the other end, wherein piston mandril 8 is fixing with on support bar 7, and connecting rod 9 is connected with support bar 7 by rotating shaft；Described switch jacking block 6 includes supporting seat 10 and contiguous block 11, and described support seat 10 is installed on the inwall of air outlet valve 2, and described contiguous block is installed on support seat, the other end and the end thereof contacts of connecting rod 9；Described meltable stop block 5 is located at connecting rod 9 both sides or entirety wraps connecting rod 9, and between the inwall of connecting rod 9 and contiguous block 11 and air outlet valve 2, the connecting rod 9 and the contiguous block 11 that are made by the obstruction of meltable stop block 5 keep connection status；The two ends of described elastic component I 3 are respectively arranged on air outlet valve end valve wall 12 and support bar 7 one end away from the inwall of air outlet valve 2, and elastic component I 3 is in compressive state；
Relief valve 13 that described intake valve 1 includes setting gradually along airintake direction, limiting plate 14, piston boit 15, elastic component II 16；Described relief valve 13 is divided into upper and lower two parts, and during upper and lower two part occlusions, gas circuit disconnects；Described limiting plate 14 is located on relief valve 13；On described elastic component II 16 piston set post 15, its one end is fixing with the jacking block 17 on piston boit 15 to be connected, and the other end is fixing with limiting plate 14 to be connected；Described piston boit 15 one end contacts with piston mandril 8 end, and the other end is fixing with the latter half of relief valve 13 after passing limiting plate 14 to be connected.
When the gas safety valve that the embodiment of the present invention provides normally works, the elastic component II 16 being in compressive state makes piston boit 15 open relief valve 13, and combustion gas is inputted by intake valve 1, exports from air outlet valve 2.When air outlet valve 2 mouthfuls catches fire, 2 mouthfuls of temperature of air outlet valve rise, and make meltable stop block melt deformation, and the resistance of contiguous block 11 is reduced by meltable stop block 5, at this moment the elastic component I 3 being in compressive state can promote piston switch 4 close to the space in 2 mouthfuls of directions of air outlet valve, and piston mandril 8 deviates piston boit 15 end；Movement due to piston mandril 8 end, piston mandril 8 end originally propping up piston boit 15 is made to occur in that space, the elastic component II 16 being in compressive state promotes piston boit 15 to move at above-mentioned space, thus drive relief valve about 13 two part occlusion that gas circuit is disconnected, block the input of combustion gas, alleviate 2 mouthfuls of problems caught fire of air outlet valve.
From technique scheme it can be seen that as it is shown in figure 1, the gas safety valve simple in construction of embodiment of the present invention offer, but can effectively extinguish catching fire of valve port of giving vent to anger.Caught fire by meltable stop block 5 perception air outlet valve 2 mouthfuls, elastic component I 3 promotes piston mandril 8 end to move the motion slot milling into piston boit 15 therewith, elastic component II 16 promotes piston boit 15 to move thus drives relief valve about 13 two part occlusion that gas circuit is disconnected, and realizes the purpose of fire extinguishing by blocking the input of combustion gas.Meanwhile, elastic component II 16 can be carried out spacing according to the compression requirement of elastic component II 16 by arranging of limiting plate 14, also preferably can be configured piston boit 15 desired position such that it is able to more precisely controls the automatic blocking-up of combustion gas.Visible, the gas safety valve that the present invention provides can automatically block combustion gas when Gas Pipe exit catches fire, it is to avoid explosion accident occurs, it is ensured that the safety of user.
Specifically, as it is shown in figure 1, in the gas safety valve that the embodiment of the present invention provides, described connecting rod 9 includes two sections be mutually flexibly connected, and meltable stop block 5 is at least located at the both sides of this junction point of two sections, or wraps this junction point of two sections.When valve port of giving vent to anger catches fire, 2 mouthfuls of temperature of air outlet valve rise, meltable stop block 5 is made to melt deformation, the resistance of connecting rod 9 is reduced by meltable stop block 5, connect owing to two sections of connecting rods 9 are not fixing at contact point, when meltable stop block 5 resistance reduces, connecting rod 9 is more easy to dislocation thus drives piston mandril 8 end to move.
Specifically, as it is shown in figure 1, in the gas safety valve that the embodiment of the present invention provides, at two sections of connecting rod 9 contact points, wherein the end of a section is cambered surface spill, and the end of another section is the cambered surface convex matched with spill.The concavo-convex structure matched of connecting rod 9 end, it is possible to make two sections of connecting rods 9 coordinate at contact point more firm.
Specifically, as it is shown in figure 1, in the gas safety valve that the embodiment of the present invention provides, described connecting rod 9 is cambered surface spill near the end of air outlet valve 2 mouthfuls；Described contiguous block 11 is spherical for match.Can preferably match with connecting rod 9 end for ball-joint piece 11, and can be more easy to when needs connecting rod 9 dislocation separates mobile.
Specifically, as it is shown in figure 1, in the gas safety valve that the embodiment of the present invention provides, described elastic component I 3 and elastic component II 16 are spring.Choosing spring as elastic component, be not only simple in structure, material is common simultaneously, and cost is relatively low.
Specifically, as it is shown in figure 1, in the gas safety valve that the embodiment of the present invention provides, the material of described meltable stop block 5 is paraffin, insect wax, foam plastics or resin.Paraffin, insect wax, foam plastics or resin etc. are all that heat easily melts material, can shorten by rapid melting when valve port 7 of giving vent to anger catches fire.
In order to realize the compact siro spinning technology of gas safety valve and gas inlet pipe, as it is shown in figure 1, in the gas safety valve that the embodiment of the present invention provides, the end of described intake valve 1 is provided with gas tank interface glue 18.The end of intake valve 1 is provided with gas tank interface glue 18 such that it is able to prevent gas safety valve from leakage problem occur with the connection end of gas inlet pipe, it is ensured that the safety that gas safety valve uses.
In order to realize closely being connected of gas safety valve and gas inlet pipe, as shown in Figure 1, in the gas safety valve that the embodiment of the present invention provides, the end of described intake valve is provided with screw thread 19, it is thus possible to prevent gas safety valve from the connection end of gas inlet pipe, leakage problem occurring, further ensure that the safety that gas safety valve uses.
Meanwhile, in order to further gas leakage situation be detected such that it is able to quickly find and solve leakage problem, as shown in Figure 1, in the gas safety valve that the embodiment of the present invention provides, described relief valve is provided with detector, it is possible to detect detection gas leakage situation.
Further, as it is shown in figure 1, in the gas safety valve that the embodiment of the present invention provides, the outer wall of described intake valve 1 is provided with thermal insulation layer 20, described thermal insulation layer 20, built with asbestos or sand, improves gas safety valve effect of heat insulation at air inlet.
Claims (10)
1. a gas safety valve, including intake valve (1) and air outlet valve (2), it is characterised in that:
Described air outlet valve (2) includes elastic component I (3), piston switch (4), meltable stop block (5) and switch jacking block (6) set gradually along outgassing direction；Described piston switch (4) includes support bar (7), piston mandril (8) and connecting rod (9), one end of described support bar (7) is installed on the inwall of air outlet valve (2) by rotating shaft, it is connected with piston mandril (8) and connecting rod (9) respectively on the other end, wherein piston mandril (8) is fixing with on support bar (7), and connecting rod (9) is connected with support bar (7) by rotating shaft；Described switch jacking block (6) includes supporting seat (10) and contiguous block (11), and described support seat (10) is installed on the inwall of air outlet valve (2), and described contiguous block is installed on support seat, the other end and the end thereof contacts of connecting rod (9)；Described meltable stop block (5) is located at connecting rod (9) both sides or entirety wraps connecting rod (9), being positioned between the inwall of connecting rod (9) and contiguous block (11) and air outlet valve (2), the connecting rod (9) made by the obstruction of meltable stop block (5) and contiguous block (11) keep connection status；The two ends of described elastic component I (3) are respectively arranged on air outlet valve end valve wall (12) and support bar (7) one end away from the inwall of air outlet valve (2), and elastic component I (3) is in compressive state；
Relief valve (13) that described intake valve (1) includes setting gradually along airintake direction, limiting plate (14), piston boit (15), elastic component II (16)；Described relief valve (13) is divided into upper and lower two parts, and during upper and lower two part occlusions, gas circuit disconnects；Described limiting plate (14) is located on relief valve (13)；On described elastic component II (16) piston set post (15), its one end is fixing with the jacking block (17) on piston boit (15) to be connected, and the other end is fixing with limiting plate (14) to be connected；Described piston boit (15) one end contacts with piston mandril (8) end, and the other end is fixing with the latter half of relief valve (13) afterwards through limiting plate (14) to be connected.
Gas safety valve the most according to claim 1, it is characterised in that: described connecting rod (9) includes that two sections be mutually flexibly connected, meltable stop block (5) are at least located at the both sides of this junction point of two sections, or wraps this junction point of two sections.
Gas safety valve the most according to claim 1, it is characterised in that: at two sections of connecting rod (9) contact points, wherein the end of a section is cambered surface spill, and the end of another section is the cambered surface convex matched with spill.
Gas safety valve the most according to claim 1, it is characterised in that: described connecting rod (9) is cambered surface spill near the end of air outlet valve (2) mouth；Described contiguous block (11) is spherical for match.
Gas safety valve the most according to claim 1, it is characterised in that: described elastic component I (3) and elastic component II (16) they are spring.
Gas safety valve the most according to claim 1, it is characterised in that: the material of described meltable stop block (5) is paraffin, insect wax, foam plastics or resin.
Gas safety valve the most according to claim 1, it is characterised in that: the end of described intake valve (1) is provided with gas tank interface glue (18).
Gas safety valve the most according to claim 1, it is characterised in that: the end of described intake valve (1) is provided with screw thread (19).
Gas safety valve the most according to claim 1, it is characterised in that: described relief valve is provided with detector, it is possible to detect detection gas leakage situation.
Gas safety valve the most according to claim 1, it is characterised in that: the outer wall of described intake valve (1) is provided with thermal insulation layer (20), and described thermal insulation layer (20) is built with asbestos or sand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410428988.1A CN104214387B (en) | 2014-08-28 | 2014-08-28 | A kind of gas safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410428988.1A CN104214387B (en) | 2014-08-28 | 2014-08-28 | A kind of gas safety valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104214387A CN104214387A (en) | 2014-12-17 |
| CN104214387B true CN104214387B (en) | 2016-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410428988.1A Active CN104214387B (en) | 2014-08-28 | 2014-08-28 | A kind of gas safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104214387B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112413159B (en) * | 2020-09-28 | 2022-12-27 | 品风燃气安全技术(广东)有限公司 | Gas safety valve with leakage-proof alarm function |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2221693Y (en) * | 1995-07-06 | 1996-03-06 | 高广兴 | Gas safety valve |
| CN2380772Y (en) * | 1998-10-08 | 2000-05-31 | 毛顺发 | Safety intelligent valve for gas |
| JP3365961B2 (en) * | 1998-07-24 | 2003-01-14 | 矢崎総業株式会社 | Pressure regulator with thermal fuse |
| CN102121540A (en) * | 2010-12-09 | 2011-07-13 | 廖新桃 | Self-closing fireproof valve for gas fire protection |
| CN204004654U (en) * | 2014-08-28 | 2014-12-10 | 徐德峰 | A kind of gas safety valve |
-
2014
- 2014-08-28 CN CN201410428988.1A patent/CN104214387B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2221693Y (en) * | 1995-07-06 | 1996-03-06 | 高广兴 | Gas safety valve |
| JP3365961B2 (en) * | 1998-07-24 | 2003-01-14 | 矢崎総業株式会社 | Pressure regulator with thermal fuse |
| CN2380772Y (en) * | 1998-10-08 | 2000-05-31 | 毛顺发 | Safety intelligent valve for gas |
| CN102121540A (en) * | 2010-12-09 | 2011-07-13 | 廖新桃 | Self-closing fireproof valve for gas fire protection |
| CN204004654U (en) * | 2014-08-28 | 2014-12-10 | 徐德峰 | A kind of gas safety valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104214387A (en) | 2014-12-17 |
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Application publication date: 20141217 Assignee: Guangxi China Polytron Technologies Inc Assignor: Xu Defeng Contract record no.: 2018450000023 Denomination of invention: Gas safety valve Granted publication date: 20161109 License type: Common License Record date: 20180517 |
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| CP02 | Change in the address of a patent holder |
Address after: No.30, group 7, Shangqiao village, yong'anzhou Town, Gaogang District, Taizhou City, Jiangsu Province 225300 Patentee after: Xu Defeng Address before: The deer Village in Lu Chuan county the Guangxi Zhuang Autonomous Region Yulin city guangzhouchina 537717 Chen Village No. 23 Patentee before: Xu Defeng |
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| TR01 | Transfer of patent right |
Effective date of registration: 20210105 Address after: 221400 building B2, science and innovation base, No.9 Zhejiang Road, Xinyi Economic Development Zone, Xuzhou City, Jiangsu Province Patentee after: Jiangsu zhuoken Intellectual Property Operation Co.,Ltd. Address before: No.30, group 7, Shangqiao village, yong'anzhou Town, Gaogang District, Taizhou City, Jiangsu Province 225300 Patentee before: Xu Defeng |