CN115234833B - Pressure vessel for chemical reaction and sealing mechanism thereof - Google Patents
Pressure vessel for chemical reaction and sealing mechanism thereof Download PDFInfo
- Publication number
- CN115234833B CN115234833B CN202211146738.XA CN202211146738A CN115234833B CN 115234833 B CN115234833 B CN 115234833B CN 202211146738 A CN202211146738 A CN 202211146738A CN 115234833 B CN115234833 B CN 115234833B
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- cover plate
- rod
- interface
- fluted disc
- plate
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- 238000007789 sealing Methods 0.000 title claims abstract description 50
- 230000007246 mechanism Effects 0.000 title claims abstract description 35
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 9
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/06—Closures, e.g. cap, breakable member
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The invention is suitable for the technical field of pressure vessel equipment, and provides a pressure vessel for chemical reaction and a sealing mechanism thereof; the method comprises the following steps: the connector and a cover plate covering the connector; a sealing gasket is arranged at the sealing surface of the interface and the cover plate; a plurality of labor-saving mechanisms are arranged between the cover plate and the interface; the labor-saving mechanism comprises a touch plate and a matching fluted disc, the outer side of the cover plate is arranged in the touch plate, the matching fluted disc is used for driving the touch plate to descend, and a labor-saving transmission assembly is arranged between the matching fluted disc and the touch plate; a sliding rod is further arranged on the interface, and a first end of the sliding rod is provided with meshing teeth matched with the matching fluted disc; the second end of the sliding rod is elastically and rotatably provided with a locking rod which is used for being clamped on one side of the cover plate, which is far away from the interface; the lock rod is clamped on the locking bulge on the cover plate; the matching fluted disc is used for driving the lock rod and the touch plate to simultaneously move towards the opposite direction. The invention has good sealing effect, is convenient to detach the cover plate from the interface and saves labor.
Description
Technical Field
The invention relates to the technical field of pressure container equipment, in particular to a pressure container for chemical reaction and a sealing mechanism thereof.
Background
The term pressure vessel refers to a closed device containing gas or liquid and carrying a certain pressure.
Pressure vessels defined as a fixed vessel and a mobile vessel having a maximum working pressure of 0.1MPa or more (gauge pressure), a liquefied gas, a liquid having a maximum working temperature of 0.1MPa or more (gauge pressure), a volume of 30L or more and an inner diameter (non-circular cross section means the maximum geometric dimension of the inner boundary of the cross section) of 150mm or more; gas cylinder for containing gas, liquefied gas and liquid with standard boiling point equal to or lower than 60 deg.C, wherein the nominal working pressure is greater than or equal to 0.2MPa (gauge pressure), and the product of pressure and volume is greater than or equal to 1.0 MPaL; an oxygen chamber.
Pressure vessel looks over and maintains the internal conditions in the use needs, consequently need dismantle the apron from the interface, and because the face contact time of contact is of a specified duration between interface and the apron, the contact surface does not have the gap, leads to needing very big power just can separate both, and it is harder to operate, now proposes a pressure vessel for chemical industry reaction and sealing mechanism thereof in order to solve this technical problem.
Disclosure of Invention
The present invention is directed to a pressure vessel for chemical reaction and a sealing mechanism thereof, so as to solve the problems of the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
a seal mechanism comprising: the connector and a cover plate covering the connector; a sealing gasket is arranged at the sealing surface of the interface and the cover plate; the device is characterized in that a plurality of labor-saving mechanisms are arranged between the cover plate and the interface;
the labor-saving mechanism comprises a touch plate and a matched fluted disc, the outer side of the cover plate is arranged in the touch plate, the matched fluted disc is used for driving the contact plate to descend, and a labor-saving transmission assembly is arranged between the matched fluted disc and the contact plate;
a sliding rod is further arranged on the interface, and a first end of the sliding rod is provided with meshing teeth matched with the matching fluted disc; the second end of the sliding rod is elastically and rotatably provided with a locking rod which is used for being clamped on one side of the cover plate, which is far away from the interface; the lock rod is clamped on the locking bulge on the cover plate;
the matching fluted disc is used for driving the lock rod and the touch plate to simultaneously move towards the opposite direction.
As a further scheme of the invention: the upper part of the cover plate is provided with a handle.
As a still further scheme of the invention: the labor-saving transmission assembly comprises a sliding block, a connecting rod and a crank, the sliding block is arranged on the interface in a vertically sliding mode, and the upper end of the sliding block is fixedly installed on the touch plate; the connecting rod intermediate position sliding connection is on the slider, connecting rod one end is rotated and is connected on the interface, the connecting rod other end is rotated and is connected on the crank, the crank is kept away from connecting rod one end and is rotated and connect in cooperation fluted disc.
As a still further scheme of the invention: a strip-shaped hole is formed in the middle of the connecting rod, and a connecting shaft penetrating through the strip-shaped hole is arranged on the sliding block.
As a still further scheme of the invention: and a positioning mechanism is also arranged between the touch plate and the cover plate.
As a still further scheme of the invention: the positioning mechanism comprises a first positioning protrusion and a positioning locking groove; the positioning locking groove is arranged at the bottom of the cover plate; the positioning locking groove is matched with the first positioning bulge; the first positioning bulge is arranged on the touch plate.
As a still further scheme of the invention: the sliding rod is arranged on a mounting seat on the interface in an elastic sliding mode, the mounting seat is fixedly mounted on the interface, and the sliding rod penetrates through a guide hole in the mounting seat.
In order to achieve the purpose, the invention provides another technical scheme as follows:
a pressure vessel for chemical reaction, comprising: the sealing mechanism is arranged on the pressure vessel cylinder, and an interface on the sealing mechanism is arranged on the pressure vessel.
Compared with the prior art, the invention has the beneficial effects that: when the cover plate is lowered to the sealing position, the lower edge of the lock rod is abutted to the upper side of the cover plate, the lock rod rotates around the slide rod to slightly pass through the locking bulge, and the cover plate is locked on the interface; when the lock rod passes over the locking protrusion, the cover plate moves upwards under the elastic action of the sealing gasket, so that the sealing gasket can perform flattening action after being compressed, the sealing gasket is prevented from being in a folded state, and the sealing effect can be improved; meanwhile, the sealing gasket is locked in the two directions through the elasticity and the locking protrusion, the locking rod is prevented from shaking, when the pressure in the interface is high, the cover plate tends to move upwards, the locking rod and the abutting plate are driven by the fluted disc to move in the opposite direction, and the locking rod and the cover plate move in the opposite directions, so that the locking rod can well limit the cover plate and the sealing effect is ensured; through setting up laborsaving mechanism can realize that less power is dismantled convenient to use from the interface with the apron.
Drawings
Fig. 1 is a front view of a sealing mechanism.
Fig. 2 is a top view of the sealing mechanism.
Fig. 3 is a perspective view of the sealing mechanism.
In the figure: the device comprises a cover plate 1, a connector 2, a contact plate 3, a lock rod 4, a sliding block 5, a connecting rod 6, a crank 7, a sliding rod 8, a first positioning protrusion 9, a positioning locking groove 10, a matching fluted disc 11, a mounting seat 12, a handle 13, a sealing gasket 14 and a locking protrusion 15.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1 to 3, in embodiment 1 of the present invention, a structure diagram of a sealing mechanism provided in an embodiment of the present invention includes: the connector 2 and a cover plate 1 covering the connector 2; a sealing gasket 14 is arranged on the sealing surface between the interface 2 and the cover plate 1 and is used for sealing the interface 2 and the cover plate 1, the cover plate 1 needs to be detached from the interface 2 in the using process, and the interface 2 and the cover plate 1 have no gap due to long contact time of the contact surface, so that the interface 2 and the cover plate 1 can be separated by a large force; in order to solve the technical problem; therefore, a plurality of labor-saving mechanisms are arranged between the cover plate 1 and the connector 2;
the labor-saving mechanism comprises a touch plate 3 and a matching fluted disc 11, the outer side of the cover plate 1 is arranged in the touch plate 3, the matching fluted disc 11 is used for driving the touch plate 3 to descend, and a labor-saving transmission assembly is arranged between the matching fluted disc 11 and the touch plate 3;
a sliding rod 8 is further arranged on the interface 2, and a first end of the sliding rod 8 is provided with meshing teeth matched with the matching fluted disc 11; the second end of the sliding rod 8 is elastically and rotatably provided with a lock rod 4, and the lock rod 4 is used for being clamped on one side, far away from the interface 2, of the cover plate 1; the locking bar 4 is clipped on the locking projection 15 on the cover plate 1.
The matching fluted disc 11 is used for driving the lock rod 4 and the touch plate 3 to simultaneously move towards opposite directions.
The touch panel 3 can be an L-shaped panel and can limit the cover plate 1 in two directions.
Specifically, when the cover plate 1 needs to be covered, the cover plate 1 is abutted against the abutting plate 3, and the lower edge of the lock rod 4 close to one end of the cover plate 1 is lower than the upper side of the cover plate 1; when the cover plate 1 descends to a sealing position, the lower edge of the lock rod 4 props against the upper side of the cover plate 1, the lock rod 4 rotates around the slide rod 8 to slightly pass through the locking protrusion 15, and the cover plate 1 is locked on the interface 2; when the lock rod 4 skips over the locking protrusion 15, the cover plate 1 is restored to move upwards under the elastic action of the sealing gasket 14, so that the sealing gasket 14 can be pressed to perform flattening restoration, the sealing gasket 14 is prevented from being in a folded state, and the sealing effect can be improved; meanwhile, the sealing gasket 14 is locked in the two directions through the elasticity and the locking protrusion 15, the locking rod 4 is prevented from shaking, when high pressure is applied to the inside of the interface 2, the cover plate 1 tends to move upwards, and the locking rod 4 and the abutting plate 3 are driven by the fluted disc 11 to move in the opposite directions, so that the movement directions of the locking rod 4 and the cover plate 1 are opposite, the locking rod 4 can well limit the cover plate 1, and the sealing effect is ensured; through setting up laborsaving mechanism can realize that less power is dismantled convenient to use from interface 2 with apron 1.
As a preferred embodiment of the present invention, a handle 13 is disposed on the upper portion of the cover plate 1, and the handle 13 is disposed to facilitate the cover plate 1 to be removed from the interface 2; the handle 13 may be welded to the cover plate 1.
As shown in fig. 1, as a preferred embodiment of the present invention, the labor-saving transmission assembly includes a slider 5, a connecting rod 6 and a crank 7, the slider 5 is slidably disposed on the interface 2, and the upper end of the slider 5 is fixedly mounted on the touch plate 3; the middle position of the connecting rod 6 is connected to the sliding block 5 in a sliding mode, one end of the connecting rod 6 is connected to the interface 2 in a rotating mode, the other end of the connecting rod 6 is connected to the crank 7 in a rotating mode, and one end, far away from the connecting rod 6, of the crank 7 is connected to the matching fluted disc 11 in a rotating mode; so when the cooperation fluted disc 11 rotates, drive connecting rod 6 through crank 7 and drive slider 5 and slide, because connecting rod 6 intermediate position sets up on slider 5, the stroke of crank 7 doubles, and the intermediate position stroke reduces, and is laborsaving, so and then can realize that less power is dismantled apron 1 from interface 2. The rotational connection may be in the form of a hinge.
In a preferred embodiment of the present invention, the locking bar 4 is radially and elastically rotatably mounted on the sliding bar 8.
As shown in fig. 1, as a preferred embodiment of the present invention, a strip-shaped hole is provided in the middle of the connecting rod 6, and a connecting shaft passing through the strip-shaped hole is provided on the sliding block 5, so that the sliding block 5 is slidably disposed on the connecting rod 6.
As shown in fig. 1, as a preferred embodiment of the present invention, in order to position the cover plate 1 on the abutting plate 3, a positioning mechanism is further disposed between the abutting plate 3 and the cover plate 1, and the positioning mechanism includes a first positioning protrusion 9 and a positioning locking groove 10; the positioning locking groove 10 is arranged at the bottom of the cover plate 1; the positioning locking groove 10 is matched with the first positioning bulge 9; the first positioning bulge 9 is arranged on the abutting plate 3; the arrangement is such that the locking rod 4 is prevented from deflecting relative to the interface 2 under the action of the spring.
As shown in fig. 1, as a preferred embodiment of the present invention, the first positioning protrusion 9 is disposed in the positioning lock groove 10 and is fixedly mounted on the contact plate 3. Thus, the cover plate 1 is positioned, the cover plate 1 is prevented from sliding, and the lock rod 4 can be locked on the cover plate 1 under the action of the locking protrusion 15 and the elasticity.
As shown in fig. 1, as a preferred embodiment of the present invention, the sliding rod 8 is elastically slidably disposed on a mounting seat 12 on the interface 2, the mounting seat 12 is fixedly mounted on the interface 2, the sliding rod 8 is disposed through a guide hole on the mounting seat 12, an elastic member is further sleeved outside the sliding rod 8, and two ends of the elastic member are respectively and fixedly mounted on the mounting seat 12 and the sliding rod 8. The elastic member may be a coil spring.
The locking bar 4 can be rotatably mounted on the sliding bar 8 through a torsion spring.
Example 2
An embodiment of the present invention further provides a pressure vessel for chemical reactions, including: the sealing device comprises a pressure vessel cylinder and the sealing mechanism arranged on the pressure vessel cylinder, wherein an interface 2 on the sealing mechanism is arranged on the pressure vessel.
The working principle of the invention is as follows:
when the cover plate 1 needs to be closed, the cover plate 1 is abutted against the abutting plate 3, and the first positioning protrusion 9 is clamped in the positioning locking groove 10 to limit the cover plate 1; the cover plate 1 is pressed through the handle 13, and the lower edge of one end, close to the cover plate 1, of the lock rod 4 is lower than the upper side of the cover plate 1; when the cover plate 1 descends to a sealing position, the lower edge of the lock rod 4 props against the upper side of the cover plate 1, the lock rod 4 rotates around the slide rod 8 to slightly pass through the locking protrusion 15, and the cover plate 1 is locked on the interface 2; when the lock rod 4 skips over the locking protrusion 15, the cover plate 1 is restored to move upwards under the elastic action of the sealing gasket 14, so that the sealing gasket 14 can be pressed to perform flattening restoration, the sealing gasket 14 is prevented from being in a folded state, and the sealing effect can be improved; meanwhile, the sealing gasket 14 is locked in the two directions through the elasticity and the locking protrusion 15, the locking rod 4 is prevented from shaking, when high pressure is applied to the inside of the interface 2, the cover plate 1 tends to move upwards, and the locking rod 4 and the abutting plate 3 are driven by the fluted disc 11 to move in the opposite directions, so that the movement directions of the locking rod 4 and the cover plate 1 are opposite, the locking rod 4 can well limit the cover plate 1, and the sealing effect is ensured; when needs are dismantled apron 1 from interface 2, rotate locking lever 4, make locking lever 4 leave apron 1, then press locking lever 4 and make slide bar 8 downstream, slide bar 8 drive cooperation fluted disc 11 rotates, cooperation fluted disc 11 makes slider 5 upward movement through crank 7 drive connecting rod 6, so make touch panel 3 drive apron 1 upward movement, realized laborsavingly through setting up connecting rod 6 and touch panel 3, be convenient for open apron 1 from interface 2. Through setting up laborsaving mechanism can realize that less power is dismantled convenient to use from interface 2 with apron 1.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, in the description of the present invention, "a plurality" means two or more unless otherwise specified. A feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. A seal mechanism comprising: the connector and a cover plate covering the connector; a sealing gasket is arranged at the sealing surface of the interface and the cover plate; it is characterized in that a plurality of labor-saving mechanisms are arranged between the cover plate and the interface;
the labor-saving mechanism comprises a touch plate and a matching fluted disc, the outer side of the cover plate is arranged in the touch plate, and a labor-saving transmission assembly is arranged between the matching fluted disc and the touch plate;
a sliding rod is further arranged on the interface, and a first end of the sliding rod is provided with meshing teeth matched with the matching fluted disc; the second end of the sliding rod is elastically and rotatably provided with a locking rod which is used for being clamped on one side of the cover plate, which is far away from the interface; the lock rod is clamped on the locking bulge on the cover plate;
the matched fluted disc is used for driving the lock rod and the touch plate to simultaneously move in opposite directions, the labor-saving transmission assembly comprises a sliding block, a connecting rod and a crank, the sliding block is arranged on the connector in a vertically sliding manner, and the upper end of the sliding block is fixedly arranged on the touch plate; when the cover plate needs to be detached from the interface, the lock rod is rotated to enable the lock rod to be separated from the cover plate, then the lock rod is pressed to enable the slide rod to move downwards, the slide rod drives the matching fluted disc to rotate, and the matching fluted disc drives the connecting rod to enable the slide block to move upwards through the crank so that the butt plate drives the cover plate to move upwards.
2. A seal mechanism according to claim 1, wherein the upper part of the cover plate is provided with a handle.
3. The sealing mechanism as claimed in claim 1, wherein a strip-shaped hole is formed in the middle of the connecting rod, and a connecting shaft penetrating through the strip-shaped hole is formed in the sliding block.
4. A seal arrangement according to claim 1, wherein a locating means is provided between the abutment plate and the cover plate.
5. A seal arrangement according to claim 4, wherein the locating means comprises a first locating projection and a locating detent; the positioning locking groove is arranged at the bottom of the cover plate; the positioning locking groove is matched with the first positioning bulge; the first positioning bulge is arranged on the touch plate.
6. A seal arrangement according to claim 1, wherein the slide rod is resiliently slidably mounted on a mounting block on the spigot, the mounting block being fixedly mounted on the spigot, the slide rod being disposed through a guide aperture in the mounting block.
7. A pressure vessel for chemical reaction, comprising: the pressure vessel cylinder and the sealing mechanism of any one of claims 1-6 arranged on the pressure vessel cylinder, wherein the interface on the sealing mechanism is arranged on the pressure vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211146738.XA CN115234833B (en) | 2022-09-21 | 2022-09-21 | Pressure vessel for chemical reaction and sealing mechanism thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211146738.XA CN115234833B (en) | 2022-09-21 | 2022-09-21 | Pressure vessel for chemical reaction and sealing mechanism thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115234833A CN115234833A (en) | 2022-10-25 |
| CN115234833B true CN115234833B (en) | 2022-12-09 |
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ID=83682205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211146738.XA Active CN115234833B (en) | 2022-09-21 | 2022-09-21 | Pressure vessel for chemical reaction and sealing mechanism thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115234833B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115638369B (en) * | 2022-12-23 | 2023-03-28 | 江苏皓宇特种设备制造有限公司 | Boiler pressure vessel with anti-leakage structure |
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| US4466551A (en) * | 1983-02-28 | 1984-08-21 | Leung Kam F | Closure device |
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| CN111453669A (en) * | 2020-03-27 | 2020-07-28 | 邓神辉 | Lubricating oil barrel prying cover device for oil barrel recovery |
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| CN215596393U (en) * | 2021-08-26 | 2022-01-21 | 赖菊梅 | Quick-opening sealing structure of pressure container |
| CN216375974U (en) * | 2021-10-31 | 2022-04-26 | 上海隆胜堡密封科技有限公司 | Lubricating oil production jar body sealing device |
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2022
- 2022-09-21 CN CN202211146738.XA patent/CN115234833B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4279356A (en) * | 1979-11-01 | 1981-07-21 | Sybron Corporation | Quick opening manhole cover assembly |
| US4466551A (en) * | 1983-02-28 | 1984-08-21 | Leung Kam F | Closure device |
| CN209277202U (en) * | 2018-12-25 | 2019-08-20 | 齐齐哈尔工程学院 | A kind of road Anti-shock manhole |
| CN110801752A (en) * | 2019-11-29 | 2020-02-18 | 安徽翰联色纺股份有限公司 | Yarn colouring material dosing unit |
| CN111453669A (en) * | 2020-03-27 | 2020-07-28 | 邓神辉 | Lubricating oil barrel prying cover device for oil barrel recovery |
| CN213332339U (en) * | 2020-09-01 | 2021-06-01 | 佛山市巴苏尼机械有限公司 | Pressure vessel with quick-opening door |
| CN213839510U (en) * | 2020-09-30 | 2021-07-30 | 石家庄建业气体有限公司 | Anti-loosening sealing cover of pressure container |
| CN215596393U (en) * | 2021-08-26 | 2022-01-21 | 赖菊梅 | Quick-opening sealing structure of pressure container |
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| CN115234833A (en) | 2022-10-25 |
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Denomination of invention: A pressure vessel and its sealing mechanism for chemical reactions Granted publication date: 20221209 Pledgee: Industrial Bank Co.,Ltd. Taizhou Branch Pledgor: JIANGSU SOUTHEAST ENVIRONMENTAL PROTECTION SCIENCE AND TECHNOLOGY CO.,LTD. Registration number: Y2024980012144 |
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