CN201111578Y - Spring self-resetting pressure relief device - Google Patents
Spring self-resetting pressure relief device Download PDFInfo
- Publication number
- CN201111578Y CN201111578Y CNU2007201821010U CN200720182101U CN201111578Y CN 201111578 Y CN201111578 Y CN 201111578Y CN U2007201821010 U CNU2007201821010 U CN U2007201821010U CN 200720182101 U CN200720182101 U CN 200720182101U CN 201111578 Y CN201111578 Y CN 201111578Y
- Authority
- CN
- China
- Prior art keywords
- pressure relief
- spring
- pressure
- sealing gland
- truncated cone
- Prior art date
- 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 - Lifetime
Links
- 210000004907 gland Anatomy 0.000 claims abstract description 75
- 238000007789 sealing Methods 0.000 claims abstract description 62
- 230000006835 compression Effects 0.000 claims abstract description 22
- 238000007906 compression Methods 0.000 claims abstract description 22
- 238000003825 pressing Methods 0.000 claims abstract description 12
- 230000005484 gravity Effects 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 13
- 238000004880 explosion Methods 0.000 description 11
- 238000013022 venting Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Images
Landscapes
- Sealing Devices (AREA)
Abstract
The utility model relates to a spring self-resetting pressure relief device, which is provided with a sealing gland for sealing a pressure relief port, wherein the upper part of the sealing gland is provided with a pressing cover, one end of a truncated cone volute spiral spring is propped against the pressing cover, and the other end of the truncated cone volute spiral spring is propped against the sealing gland; and a guide post is arranged at the pressure relief opening, one end of the guide post is fixedly arranged at the pressure relief opening, the other end of the guide post is connected with the compression cover, and the sealing gland can be slidably connected with the guide post. The structure of the utility model can automatically complete pressure relief, and the sealing gland can automatically reset after pressure relief, so that the equipment does not need to be checked and maintained, and the production efficiency is improved; the method is suitable for complex pressure pipelines, and is particularly suitable for pressure-resistant dust removal equipment such as blast furnace gas dust removal equipment or converters; can stably act under the condition of large load, and can be suitable for pressure-resistant dust removal equipment with the pressure-resistant strength of more than 0.3MPa, such as blast furnace gas, converter gas and the like.
Description
Technical Field
The utility model relates to a pressure equipment in from reset pressure relief device, especially one kind when pressure in the pressure vessel surpasses the specified value, it is right pressure vessel carries out the spring of safe pressure release from reset pressure relief device.
Background
At present, the known pressure vessels for industrial use, especially the safety pressure relief devices in the dust removal of blast furnace gas, usually adopt a straight-through or gravity type explosion relief (pressure) device. Fig. 1 is a schematic cross-sectional view of a conventional straight-through explosion venting apparatus. As shown in the figure, the straight-through explosion venting device adopts a structure of a pressure venting diaphragm, namely, a pressure venting diaphragm 101 made of stainless steel or polytetrafluoroethylene and other materials is arranged on an explosion venting port 11' which is directly contacted with pressure gas, when the pressure in a container exceeds a set value, the pressure venting diaphragm 101 automatically breaks, so that the pressure in the container exceeding the set value is vented to the outside of the container through the broken pressure venting diaphragm 101. The straight-through type explosion venting device is simple in structure, but due to the disposable structure, once pressure relief occurs, automatic repair cannot be achieved, a broken pressure relief diaphragm needs to be removed, and a complete pressure relief diaphragm 101 needs to be replaced again. For a complex pressure pipeline, much time is needed to find the accurate position where pressure relief occurs, harmful gas in the pipeline can escape, and the safety of people is endangered.
Fig. 2 is another known counterweight type gland explosion relief device, and as shown in the figure, the device is additionally provided with a counterweight type gland on the basis of the straight-through type explosion relief device. As shown in fig. 2, a weight type gland 201 is installed on the explosion relief port 11 ' directly contacting with the pressure gas, one end of the weight type gland 201 is connected with the container wall 11 ' through a pivot 202, and the other end is sealed by a sealing gasket 212 fixed on the weight type gland 201 and a flange 211 on the container wall 11 ' by the weight of the weight type gland. When the pressure in the pipeline exceeds the weight of the weight type gland 201, the pressure in the pipeline pushes the weight type gland 201 open to release the pressure, after the pressure is released, the weight effect is generated by the self weight of the weight type gland 201, the explosion and leakage port 11' is closed, and the pressure release action is completed. The pressure relief device has poor sealing performance, and the dead weight of the weight type gland is limited, so that the application occasions are limited.
This designer is based on the many years research and development to pressure vessel pressure relief device, to the problem that exists among the above well-known technique, still can normally work after the pressure release for the assurance system, reduces harmful gas's escape, proposes the utility model discloses a spring is from restoring to the throne pressure relief device.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an install on the container wall (pipeline) with pressure gas direct contact, realize from the spring pressure relief device that restores to throne from truncated cone scroll coil spring. When the pressure in the container exceeds a set value, the sealing gland of the spring self-resetting pressure relief device can be automatically opened to relieve pressure outside the container; when the pressure in the container is reduced to a value below the set pressure value after pressure relief, the sealing cover can be automatically reset and is fitted in the pressure relief opening of the container, so that the system can continuously run in a normal state.
Therefore, the utility model provides a spring self-resetting pressure relief device, wherein, the spring self-resetting pressure relief device has a sealing gland which seals the pressure relief opening, the upper part of the sealing gland is provided with a pressing cover, one end of the truncated cone spiral spring is pressed against the pressing cover, and the other end is pressed against the sealing gland; and a guide post is arranged at the pressure relief opening, one end of the guide post is fixedly arranged at the pressure relief opening, the other end of the guide post is connected with the compression cover, and the sealing gland can be slidably connected with the guide post.
The spring self-resetting pressure relief device is characterized in that the truncated cone spiral spring is arranged at the center of gravity of the sealing gland, and a truncated cone spiral spring guiding and positioning device is arranged between the truncated cone spiral spring and the pressing cover.
The spring self-resetting pressure relief device comprises a pressure relief cover, a truncated cone spiral spring, a sealing gland and a pressure relief valve, wherein the pressure relief cover is provided with a pressure relief hole; the lower surface of the compression cover and the upper surface of the sealing gland are respectively provided with a boss and an annular recess which correspond to each other, and the boss and the annular recess are respectively matched with the inner diameter or the outer diameter of two end parts of the truncated cone spiral spring.
The spring self-resetting pressure relief device comprises a pressure relief opening, a pressure relief support is fixed on the periphery of the pressure relief opening, a through hole with the diameter smaller than that of the sealing gland is formed in the pressure relief support, at least one annular sealing ring is arranged on the upper surface of the pressure relief support, and the sealing ring covers the bottom of the sealing gland.
The spring self-resetting pressure relief device comprises at least two guide posts, wherein one end of each guide post is fixedly connected with the pressure relief support, and the other end of each guide post is used for connecting the compression cover with the corresponding guide post through a compression nut.
The spring self-resetting pressure relief device comprises a sealing gland, a spring, a connecting rod and a guide post, wherein the spring is arranged on the sealing gland, the connecting rod is arranged on the sealing gland, the spring is arranged on the connecting rod, and the guide post penetrates through the connecting rod.
The spring self-resetting pressure relief device is characterized in that the pressing cover is composed of a steel channel, and the width of the abutting surface of the pressing cover and the truncated cone spiral spring is larger than or equal to the diameter of the spring.
The spring self-resetting pressure relief device is characterized in that the compression cover is a cylinder with the diameter larger than or equal to that of the sealing gland.
Compared with the prior art, the utility model has the characteristics and advantages that:
the utility model discloses a set up at gland and compress tightly the frustum spiral coil spring between the cover, fix at the guide post of pressure release mouth, and make gland can follow the guide post and slide, thereby make the utility model discloses a pressure relief device can promote when the value of settlement is exceeded to the container internal pressure, gland promotes the frustum spiral coil spring and makes it produce and warp, then gland leaves the pressure release mouth under the promotion of container internal pressure, begins to the outer pressure release of container. When the pressure in the container is reduced to a pressure value below a set value after pressure relief, the sealing gland is immediately pushed to tightly return to the sealing ring on the pressure relief opening by means of the deformation energy stored by the truncated cone spiral spring due to deformation, so that the container is kept in a sealing state. The utility model discloses a pressure release can be accomplished automatically to the structure, and gland can automatic re-setting behind the pressure release, consequently need not to inspect, maintain equipment after producing the pressure release, has improved production efficiency. The utility model is suitable for a complicated pipeline under pressure, withstand voltage dust collecting equipment such as specially adapted blast furnace gas dust removal or converter can not make a large amount of toxic gas escape after the pressure release, has guaranteed the security of production, has overcome the defect that known technique exists. In addition, because the utility model discloses a truncated cone spiral coil spring, steady action under the heavy load condition makes it be applicable to withstand voltage dust collecting equipment such as blast furnace gas or converter gas above compressive strength 0.3 MPa.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein,
FIG. 1 is a schematic cross-sectional view of a conventional straight-through explosion venting apparatus;
FIG. 2 is a schematic structural diagram of another known counterweight-type gland explosion venting device;
fig. 3 is a schematic full sectional view of a front view of the spring self-resetting pressure relief device of the present invention;
fig. 4 is a schematic top view of the spring self-resetting pressure relief device of the present invention;
fig. 5 is a schematic top view of another embodiment of the spring self-resetting pressure relief device according to the present invention.
Description of the reference numerals
1. Pressure release support 2, sealing washer 3, guide post
4. Sealing gland 5, sealing gland guide lug 6 and truncated cone spiral spring
7. 7' pressing cover 8, boss 9 and guide hole
10. Gland nut 11, pressure relief port 12 and through hole
13. Annular recess
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings. Wherein like parts are given like reference numerals.
Embodiment 1 is as shown in fig. 3, the utility model provides a spring is from restoring to throne pressure relief device has sealed lid and fits the gland 4 of pressure relief mouth 11, gland 4's upper portion is equipped with one and compresses tightly cover 7, and truncated cone spiral spring 6's one end top support in compress tightly cover 7, the other end top support in gland 4. The periphery of the pressure relief port 11 is provided with a guide post 3, one end of the guide post 3 is fixedly arranged at the pressure relief port 11, the other end of the guide post is connected with the compression cover 7, and the sealing gland 4 can be slidably connected with the guide post 3. In order to make the utility model discloses a spring is from restoring to throne pressure relief device and pressure release mouth 11 firm in connection, preferably is in the fixed pressure release support 1 that sets up in pressure release mouth 11 periphery, be equipped with the diameter on the pressure release support 1 and be less than the through-hole 12 of gland 4 diameter, the upper surface of pressure release support 1 is equipped with an at least ring seal circle 2, gland 4's bottom lid fits sealing washer 2. In one embodiment shown in fig. 3, the sealing ring 2 is a flat rubber sealing ring embedded in the upper surface of the pressure relief support 1, and the bottom of the sealing gland 4 abuts against the sealing ring 2 to seal the pressure relief opening 11. The seal ring 2 may have any other known shape as long as the bottom of the seal cover 4 can be fitted to the seal ring 2 to form the seal cover relief port 11.
Preferably, the frustoconical spiral spring 6 is disposed at the center of gravity of the gland 4, and a guide positioning device is disposed between the frustoconical spiral spring 6 and the gland 7.
In the present embodiment, the large diameter end of the spiral spring 6 abuts against the gland 4, and the small diameter end abuts against the gland 7. The guiding and positioning device is a boss 8 which is arranged on the lower surface of the compression cover 7 and protrudes downwards, and an annular recess 13 which is arranged on the upper surface of the sealing gland 4, and the boss 8 and the annular recess 13 are oppositely arranged, and an installation mode is shown in fig. 3, namely, the head part of the boss 8 is embedded in the small-diameter end of the truncated-cone spiral spring 6, and the peripheral diameter of the head part of the boss 8 is matched with the inner diameter of the small-diameter end of the spring; the inner peripheral diameter of the annular recess 13 matches the outer diameter of the large diameter end of the frusto-conical volute spiral spring 6, thereby providing a location for the frusto-conical volute spiral spring. The positioning manner of the spiral spring 6 is not limited to this, and the positions of the boss 8 and the annular recess 13 may be changed so that the outer diameter of the head of the boss 8 matches the inner diameter of the large diameter end of the spiral spring 6, and the inner diameter of the annular recess 13 matches the outer diameter of the small diameter end of the spiral spring 6.
In the present embodiment, as shown in fig. 4, the pressure cover 7 is formed of a channel, and the width B of the contact surface with the spiral spring 6 is equal to or larger than the diameter of the spiral spring 6. The pressure release support 1 is gone up the fixed two that set up guide post 3 the both sides of gland 4 are equipped with two direction engaging lug 5, pass respectively through two guide post 3 two direction engaging lug 5 make gland 4 slidable ground is connected with guide post 3 to guaranteed gland 4 and opened steady, the accuracy of closing in-process motion, after accomplishing the pressure release, closed during pressure release mouth 11, gland 4's peripheral can correctly be covered and close on sealing washer 2. The other end of the guide post 3 passes through guide holes 9 arranged at two sides of the compression cover 7, and the compression cover 7 is connected with the guide post 3 through a compression nut 10. The compression cover 7 compresses the sealing gland 4 through the truncated cone scroll spiral spring 6 by adjusting the compression nut 10, and the elasticity of the truncated cone scroll spiral spring 6 is adjusted and controlled according to the working pressure value in the container.
The utility model discloses a theory of operation is: when the system normally operates, the utility model discloses a spring is sealed leakagely from resetting pressure relief device. When the working pressure of the gas (such as coal gas) in the container is higher than the set pressure, for example, the stiffness of the spiral spring 6 is designed according to the working pressure 3000-3500Pa of the gas in the container, when the working pressure in the container is higher than 3500Pa, the positive pressure acting on the sealing gland 4 exceeds the stiffness of the spiral spring 6, the spiral spring 6 deforms, the seal between the sealing gland 4 and the sealing ring 2 is broken, the sealing gland 4 is jacked up along the guide post 3 under the action of the gas pressure in the container, and the self-resetting pressure relief device of the spring starts to relieve pressure from the through hole 12 of the pressure relief support 1 communicated with the pressure relief port 11.
When the pressure of the gas working pressure in the container is reduced to be less than 3500Pa, the sealing gland 4 moves downwards along the guide post 3 by the aid of the elastic force of the truncated cone spiral spring 6, the sealing state between the bottom of the sealing gland 4 and the sealing ring 2 is recovered, the through hole 12 is closed, and the spring automatic resetting pressure relief device recovers to the sealing state.
As shown in fig. 5, in the present embodiment, the packing cover 7' is a cylindrical body having a diameter equal to or larger than the diameter of the gland 4. By adopting the compression cover, the sealing gland 4 can be covered in the compression cover, thereby playing a role of blocking dust for the truncated cone spiral spring 6 and the sealing ring 2.
Meanwhile, in order to make the movement of the compression cap and the gland 4 more stable, three or four guide posts 3 may be provided in the circumferential direction. The number of guide posts 3 is not limited thereto.
Other structures, operation principles, and advantageous effects of the present embodiment are the same as those of embodiment 1, and are not described herein again.
The foregoing is merely an illustrative embodiment of the present invention, and is not intended to limit the scope of the invention. Therefore, the scope of the present invention is not intended to be limited to the particular embodiments shown and described.
Claims (8)
1. The utility model provides a spring is from restoring to throne pressure relief device which characterized in that: the spring self-resetting pressure relief device is provided with a sealing gland which is used for sealing the pressure relief opening, a compression cover is arranged at the upper part of the sealing gland, one end of the truncated cone spiral spring is propped against the compression cover, and the other end of the truncated cone spiral spring is propped against the sealing gland; and a guide post is arranged at the pressure relief opening, one end of the guide post is fixedly arranged at the pressure relief opening, the other end of the guide post is connected with the compression cover, and the sealing gland can be slidably connected with the guide post.
2. The spring self-resetting pressure relief device of claim 1, wherein: the truncated cone spiral spring is arranged at the gravity center position of the sealing gland, and a truncated cone spiral spring guiding and positioning device is arranged between the truncated cone spiral spring and the pressing cover.
3. The spring self-resetting pressure relief device of claim 2, wherein: the large-diameter end of the truncated cone scroll spiral spring abuts against the sealing gland, and the small-diameter end of the truncated cone scroll spiral spring abuts against the pressing cover; the lower surface of the compression cover and the upper surface of the sealing gland are respectively provided with a boss and an annular recess which correspond to each other, and the boss and the annular recess are respectively matched with the inner diameter or the outer diameter of two end parts of the truncated cone spiral spring.
4. The spring self-resetting pressure relief device of claim 1, wherein: the pressure relief port periphery is fixed with the pressure relief support, the pressure relief support is equipped with the diameter and is less than the through-hole of gland diameter the upper surface of pressure relief support is equipped with an at least ring seal circle, gland's bottom lid fits the sealing washer.
5. The spring self-resetting pressure relief device of claim 1, wherein: the guide posts are at least two, one end of each guide post is fixedly connected with the pressure relief support, and the other end of each guide post is connected with the compression cover and the guide posts through compression nuts.
6. The spring self-resetting pressure relief device of claim 1 or 4, wherein: at least two guide connecting lugs are arranged on two sides of the sealing gland, and the guide columns penetrate through the guide connecting lugs respectively.
7. The spring self-resetting pressure relief device of claim 1, wherein: the pressing cover is composed of a channel steel, and the width of the abutting surface of the pressing cover and the truncated cone spiral spring is larger than or equal to the diameter of the spring.
8. The spring self-resetting pressure relief device of claim 1, wherein: the compressing cover is a cylinder with the diameter larger than or equal to that of the sealing gland.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201821010U CN201111578Y (en) | 2007-10-26 | 2007-10-26 | Spring self-resetting pressure relief device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201821010U CN201111578Y (en) | 2007-10-26 | 2007-10-26 | Spring self-resetting pressure relief device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201111578Y true CN201111578Y (en) | 2008-09-10 |
Family
ID=39963321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201821010U Expired - Lifetime CN201111578Y (en) | 2007-10-26 | 2007-10-26 | Spring self-resetting pressure relief device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201111578Y (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102357974A (en) * | 2011-09-28 | 2012-02-22 | 无锡锦和科技有限公司 | Self-sealing large-flow exhaust tank |
| CN102616505A (en) * | 2012-03-21 | 2012-08-01 | 中冶南方工程技术有限公司 | Automatic diffusing system for converter gas chamber |
| CN102837916A (en) * | 2012-08-13 | 2012-12-26 | 安徽省金裕皖生物科技开发有限公司 | Stainless steel liquor tank respiratory recovery device |
| CN103244721A (en) * | 2013-05-09 | 2013-08-14 | 三一汽车制造有限公司 | Powder tank safety valve, powder tank and stirring station |
| CN103511692A (en) * | 2012-06-26 | 2014-01-15 | 江苏海陵机械有限公司 | Pipeline pressure-relief device |
| CN103553296A (en) * | 2013-11-08 | 2014-02-05 | 蚌埠玻璃工业设计研究院 | Elastic furnace pressure adjustment device |
| CN104180034A (en) * | 2014-08-27 | 2014-12-03 | 四川省建筑科学研究院 | Automatic control valve for water buoyancy of underground construction |
| CN107951382A (en) * | 2018-01-12 | 2018-04-24 | 湖南唐米力智能科技有限公司 | Automatic dish cooking machine |
| CN108041994A (en) * | 2018-01-12 | 2018-05-18 | 湖南唐米力智能科技有限公司 | Flexible sealing structure |
| CN109373039A (en) * | 2018-12-22 | 2019-02-22 | 福州大学 | A kind of mine working air door relief valve and its working method |
| CN109578643A (en) * | 2018-12-17 | 2019-04-05 | 广州市致顺科技有限公司 | A kind of gas gathering mask with venting of dust explosion function |
| CN109603513A (en) * | 2018-12-17 | 2019-04-12 | 广州市致顺科技有限公司 | A kind of glue residue exhaust treatment system |
-
2007
- 2007-10-26 CN CNU2007201821010U patent/CN201111578Y/en not_active Expired - Lifetime
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102357974B (en) * | 2011-09-28 | 2016-02-03 | 无锡锦和科技有限公司 | Self-sealing high flux exhaust tank |
| CN102357974A (en) * | 2011-09-28 | 2012-02-22 | 无锡锦和科技有限公司 | Self-sealing large-flow exhaust tank |
| CN102616505A (en) * | 2012-03-21 | 2012-08-01 | 中冶南方工程技术有限公司 | Automatic diffusing system for converter gas chamber |
| CN103511692A (en) * | 2012-06-26 | 2014-01-15 | 江苏海陵机械有限公司 | Pipeline pressure-relief device |
| CN102837916A (en) * | 2012-08-13 | 2012-12-26 | 安徽省金裕皖生物科技开发有限公司 | Stainless steel liquor tank respiratory recovery device |
| CN103244721B (en) * | 2013-05-09 | 2016-05-25 | 三一汽车制造有限公司 | Powder material tank safety valve, powder material tank and mixing plant |
| CN103244721A (en) * | 2013-05-09 | 2013-08-14 | 三一汽车制造有限公司 | Powder tank safety valve, powder tank and stirring station |
| CN103553296A (en) * | 2013-11-08 | 2014-02-05 | 蚌埠玻璃工业设计研究院 | Elastic furnace pressure adjustment device |
| CN103553296B (en) * | 2013-11-08 | 2016-07-13 | 蚌埠玻璃工业设计研究院 | A kind of Elastic furnace pressure adjustment device |
| CN104180034A (en) * | 2014-08-27 | 2014-12-03 | 四川省建筑科学研究院 | Automatic control valve for water buoyancy of underground construction |
| CN107951382A (en) * | 2018-01-12 | 2018-04-24 | 湖南唐米力智能科技有限公司 | Automatic dish cooking machine |
| CN108041994A (en) * | 2018-01-12 | 2018-05-18 | 湖南唐米力智能科技有限公司 | Flexible sealing structure |
| CN108041994B (en) * | 2018-01-12 | 2023-10-24 | 湖南唐米力科技有限公司 | Telescopic sealing structure |
| CN109578643A (en) * | 2018-12-17 | 2019-04-05 | 广州市致顺科技有限公司 | A kind of gas gathering mask with venting of dust explosion function |
| CN109603513A (en) * | 2018-12-17 | 2019-04-12 | 广州市致顺科技有限公司 | A kind of glue residue exhaust treatment system |
| CN109578643B (en) * | 2018-12-17 | 2024-03-19 | 广东致顺化工环保设备有限公司 | Gas collecting hood with explosion venting function |
| CN109603513B (en) * | 2018-12-17 | 2024-05-14 | 广东致顺化工环保设备有限公司 | Glue residue waste gas treatment system |
| CN109373039A (en) * | 2018-12-22 | 2019-02-22 | 福州大学 | A kind of mine working air door relief valve and its working method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081219 Address after: Wujiang City, Jiangsu province Lingzhen split eight community, zip code: 215222 Patentee after: Kelin Environmental Protection Equipment, Inc. Address before: Wujiang City, Jiangsu province Lingzhen split eight community, zip code: 215222 Patentee before: Jiangsu Kelin Group Co., Ltd. |
|
| ASS | Succession or assignment of patent right |
Owner name: KELIN ENVIRONMENT PROTECTION EQUIPMENTS CO., LTD. Free format text: FORMER OWNER: JIANGSU KELIN GROUP CO., LTD. Effective date: 20081219 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160819 Address after: Split eight communities in Wujiang District of Suzhou City, Jiangsu province 215000 Patentee after: Environmental Protection Technology Co., Ltd. Address before: 215222 Wujiang City, Jiangsu Province eight song split community Patentee before: Kelin Environmental Protection Equipment, Inc. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080910 |