CN219149560U - Filter for ethylene oxide - Google Patents
Filter for ethylene oxide Download PDFInfo
- Publication number
- CN219149560U CN219149560U CN202223049968.2U CN202223049968U CN219149560U CN 219149560 U CN219149560 U CN 219149560U CN 202223049968 U CN202223049968 U CN 202223049968U CN 219149560 U CN219149560 U CN 219149560U
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- China
- Prior art keywords
- shell
- ethylene oxide
- plate
- filter
- fixedly connected
- 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.)
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- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 239000012535 impurity Substances 0.000 claims abstract description 59
- 229910052751 metal Inorganic materials 0.000 claims abstract description 44
- 239000002184 metal Substances 0.000 claims abstract description 44
- 230000001681 protective effect Effects 0.000 claims abstract description 33
- 238000007790 scraping Methods 0.000 claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 10
- 239000010959 steel Substances 0.000 claims abstract description 10
- 238000004140 cleaning Methods 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 15
- 230000000903 blocking effect Effects 0.000 claims description 6
- 239000004745 nonwoven fabric Substances 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 claims description 2
- 238000001914 filtration Methods 0.000 abstract description 12
- 238000010586 diagram Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000003899 bactericide agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000357 carcinogen Toxicity 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 125000000963 oxybis(methylene) group Chemical group [H]C([H])(*)OC([H])([H])* 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The utility model relates to the technical field of ethylene oxide, and discloses an ethylene oxide filter, which comprises a shell, wherein an air inlet connector for connecting the shell with an ethylene oxide steel cylinder is fixedly connected to the outer part of the shell, and a fixing frame for installing a filter element is fixedly connected to the inner part of the shell; the integrated shell structure facilitates replacement of the filter plate by arranging the sliding port and the airtight plate which are matched in an inserting manner, metal impurities in the ethylene oxide gas are also guaranteed to be airtight, the impurity removing port and the plugging plate are matched in an inserting manner, so that the air tightness and the safety of cleaning of the metal impurities in the ethylene oxide are guaranteed, the screw rod rotates to enable the sliding seat to slide on the inner side of the protective shell, the sliding seat slides to drive the scraping brush to clean the metal impurities accumulated in the filtration of the surface of the filter plate, the metal impurities are gathered on the inner side of the concave plate through the collecting port, the metal impurities after the ethylene oxide is filtered are automatically cleaned, the air passage of the filter plate is prevented from being blocked, and the practicability of the ethylene oxide filtering device is improved.
Description
Technical Field
The utility model relates to the technical field of ethylene oxide, in particular to a filter of ethylene oxide.
Background
Ethylene oxide is an organic compound of the formula C2H4O, a toxic carcinogen, and has been used previously to make bactericides. Ethylene oxide is flammable and explosive, and is not suitable for long-distance transportation, so that the ethylene oxide has strong territory. The ethylene oxide filter is widely applied to industries such as washing, pharmacy, printing and dyeing, ethylene oxide is stored in a steel bottle for transportation, the ethylene oxide can corrode the steel bottle to ensure that metal impurities can be remained in the gaseous ethylene oxide, the filter of the ethylene oxide disclosed in Chinese patent No. CN206587447U adopts an inlet connector, a sealing flange, a mounting part and a filter element arranged inside a filtering part to filter heavy metal impurities of the ethylene oxide gas, and the problems are as follows:
1. the use of simple sealing flanges and mounting portions for the connection sealing of the entire filter device does not guarantee an accurate butt joint of the mounted positions, while the tightness of the filter device is reduced.
2. The filter part is provided with a filter element for filtering the metallic impurities of the ethylene oxide gas, and the metallic impurities trapped by the filtration can cause the blockage of a filter element channel, thereby causing the blockage of the ethylene oxide gas transmission.
Disclosure of Invention
For solving above-mentioned adoption simple sealing flange and installation department be used for the connection seal of whole filter equipment can not guarantee the accurate butt joint in position of installation, filter equipment's leakproofness reduces simultaneously and filter the department and set up the filter core and carry out the gaseous metallic impurity filtration of ethylene oxide, and the metallic impurity that filters the interception can lead to the filter core passageway to block up not smooth to lead to the obstructed problem of ethylene oxide gas delivery, realize above gas tightness height, safety, the purpose that the automatic clearance of filtration impurity was collected.
The utility model is realized by the following technical scheme: the utility model provides an ethylene oxide's filter, includes the shell, the outside fixedly connected with of shell is used for the air inlet joint that shell and ethylene oxide steel bottle are connected, the inside fixedly connected with of shell is used for installing the mount of filter, the inboard sliding connection of mount has the filter plate that is used for ethylene oxide metallic impurity to purify, the outside swing joint of shell has the switching subassembly that is used for replacing the filter plate, the outside fixedly connected with of shell is used for ethylene oxide gas exhaust to give vent to anger the joint. The inside fixedly connected with of shell is used for the protective housing of filter plate surface metal impurity clearance, the inboard sliding connection of protective housing has the slide that is used for clearing up filter plate surface metal impurity, the inboard swing joint of protective housing has the conduction subassembly that is used for controlling the slide action, the outside fixedly connected with of slide is used for clearing up the brush of scraping of metal impurity, the collection mouth that is used for collecting metal impurity has been seted up on the surface of shell, the outside fixedly connected with of shell is used for storing the recess board of metal impurity, the outside swing joint of recess board has the seal assembly that is used for controlling recess board and opens and close.
Further, the air inlet connector is communicated with the inside of the shell, the air inlet connector is connected with the ethylene oxide steel cylinder through a hose, the fixing frame is corresponding to the inside of the shell in position and matched with the shell in specification, and the filter plate is made of non-woven fabrics.
Further, the filter plate is in sliding sealing connection with the fixing frame, the opening and closing assembly comprises a sliding port which is arranged on the surface of the shell and used for replacing the filter plate, and an airtight plate which is covered on the inner side of the sliding port and used for sealing the sliding port, and the airtight plate is in sliding sealing connection with the sliding port.
Furthermore, the air outlet connector is communicated with the inside of the shell, the protective shells are symmetrically distributed on the left side and the right side of the inside of the shell, and the protective shells correspond to the fixing frame in position.
Further, the conduction assembly comprises a screw rod movably connected inside the protective shell and used for controlling the sliding seat to slide back and forth inside the protective shell, a sleeve plate movably connected outside the screw rod and used for driving the sliding seat to slide, a contact fixedly connected outside the screw rod and used for controlling the sleeve plate to stop in place, and a motor fixedly connected outside the protective shell and used for providing power for the screw rod.
Further, the motor is fixedly connected with the screw rod through the connecting shaft, the contact corresponds to the position of the sleeve plate, the length specification of the screw rod is matched with the height specification of the fixing frame, the screw rod is rotationally connected with the sleeve plate through threads, the motor is electrically connected with the contact, and the contact is triggered, so that the motor stops being electrified.
Further, the scraping brush corresponds to the filter plate in position, the scraping brush corresponds to the collecting opening in position, the concave plate corresponds to the collecting opening in position, the sealing assembly comprises a impurity removing opening formed in the bottom of the concave plate and a blocking plate inserted into the inner side of the impurity removing opening, and the blocking plate is fixedly connected with the concave plate through metal screws.
The utility model provides a filter of ethylene oxide. The beneficial effects are as follows:
the integrated shell structure facilitates replacement of the filter plate by arranging the sliding port and the airtight plate which are matched in an inserting manner, metal impurities in the ethylene oxide gas are also guaranteed to be airtight, the impurity removing port and the plugging plate are matched in an inserting manner, so that the air tightness and the safety of cleaning of the metal impurities in the ethylene oxide are guaranteed, meanwhile, the screw rod rotates to enable the sliding seat to slide on the inner side of the protective shell, the sliding seat slides to drive the scraping brush to move to clean the metal impurities accumulated in the filtration of the surface of the filter plate, the metal impurities are gathered on the inner side of the concave plate through the collecting port, and therefore the metal impurities after the filtration of the ethylene oxide are automatically cleaned, the air passage of the filter plate is prevented from being blocked, and the practicability of the ethylene oxide filtering device is improved.
Drawings
FIG. 1 is a schematic view of the overall appearance structure of the present utility model;
FIG. 2 is a schematic diagram of the connection relationship among the housing, the inlet connector, the outlet connector, the recess plate and the sealing assembly;
FIG. 3 is a schematic diagram of the connection relationship among the shell, the air inlet connector, the air outlet connector, the sliding port and the collecting port;
FIG. 4 is a schematic diagram of the connection relationship among the housing, the air inlet connector, the air outlet connector and the collecting port;
FIG. 5 is a schematic view of the connection relationship among the shell, the air inlet connector, the air outlet connector, the fixing frame, the filter plate, the opening and closing assembly, the protective shell, the sliding seat, the scraping brush and the collecting port;
FIG. 6 is a schematic view of the structure of the airtight plate according to the present utility model;
FIG. 7 is a schematic diagram of the connection relationship between the fixing frame and the filter plate;
FIG. 8 is a schematic view of a fixing frame according to the present utility model;
FIG. 9 is a schematic view of a filter plate structure according to the present utility model;
FIG. 10 is a schematic view of the connection relationship among the protective shell, the conductive component, the sliding seat, the scraping brush and the connecting structure of the utility model;
FIG. 11 is a schematic diagram of the connection relationship among the protective shell, the conductive component and the sliding seat according to the present utility model;
FIG. 12 is a schematic view of the connection relationship among the protective shell, the conductive component and the slide base;
FIG. 13 is a schematic view of a wiper structure according to the present utility model;
FIG. 14 is a schematic view of the connection relationship between the recess plate and the seal assembly of the present utility model;
FIG. 15 is a schematic view of the connection relationship between the impurity removing ports and the concave plates according to the present utility model;
FIG. 16 is a schematic view of a closure plate according to the present utility model.
In the figure: 1. a housing; 11. an air inlet joint; 12. a fixing frame; 13. a filter plate; 14. an opening and closing assembly; 141. a sliding port; 142. an airtight plate; 15. an air outlet joint; 2. a protective shell; 21. a slide; 22. a conductive component; 221. a screw rod; 222. a sleeve plate; 223. a contact; 224. a motor; 23. scraping and brushing; 24. a collection port; 25. a concave plate; 26. a seal assembly; 261. removing impurities; 262. and a closure plate.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples of the filters for ethylene oxide are as follows:
embodiment one:
referring to fig. 1-9, a filter for ethylene oxide comprises a housing 1, an air inlet joint 11 for connecting the housing 1 with an ethylene oxide steel cylinder is fixedly connected to the outside of the housing 1, a fixing frame 12 for installing a filter is fixedly connected to the inside of the housing 1, a filter plate 13 for purifying metal impurities of ethylene oxide is slidingly connected to the inner side of the fixing frame 12,
the air inlet joint 11 is communicated with the inside of the shell 1, the air inlet joint 11 is connected with an ethylene oxide steel cylinder through a hose, the fixing frame 12 corresponds to the inside of the shell 1 in position and is matched with the shell in specification, and the filter plate 13 is made of non-woven fabrics.
The ethylene oxide is used, a user uses a hose to connect the air inlet connector 11 with the ethylene oxide steel cylinder connector, ethylene oxide gas is conveyed into the air inlet connector 11 through the hose until entering the shell 1, along with the accumulation of the ethylene oxide gas in the shell 1, the ethylene oxide gas passes through the filter plate 13, metal impurities in the ethylene oxide gas are filtered and trapped on the surface of the filter plate 13, and the filtered ethylene oxide gas passes through the filter plate 13 on the inner side of the fixing frame 12 and is discharged through the air outlet connector 15 for use.
When the filter plate 13 reaches the service life, the user operates the airtight plate 142 to be taken away from the inner side of the sliding port 141, the sliding port 141 is opened, the user uses the clamping tool to fix the filter plate 13 to slide on the inner side of the fixed frame 12 until the filter plate 13 is taken out through the sliding port 141, the new filter plate 13 is replaced to slide on the inner side of the fixed frame 12, and the airtight plate 142 is placed on the inner side of the sliding port 141 to be covered and fixed through bolts.
The outside swing joint of shell 1 has the switching subassembly 14 that is used for replacing filter plate 13, and filter plate 13 and mount 12 sliding seal connect, and switching subassembly 14 is including opening in shell 1 surface and is used for replacing filter plate 13's slide port 141, closing in the airtight board 142 that is used for sealing slide port 141 in the slide port 141 inboard, airtight board 142 and slide port 141 sliding seal connect, and the outside fixedly connected with of shell 1 is used for ethylene oxide gas exhaust's air outlet joint 15.
The integral shell 1 structure facilitates the replacement of the filter plate 13 by arranging the sliding port 141 and the airtight plate 142 which are matched in a plugging manner, and also ensures the air tightness of the filter plate 13 and the metal impurities in the ethylene oxide gas purified by the fixing frame 12, and the air tightness and the safety of the cleaning of the metal impurities in the ethylene oxide are ensured by the plugging matching of the impurity removing port 261 and the plugging plate 262.
Embodiment two:
referring to fig. 1, 2, 4, 5 and 10-16, an ethylene oxide filter comprises a housing 1, wherein a fixing frame 12 for installing a filter is fixedly connected to the interior of the housing 1, a filter plate 13 for purifying metal impurities of ethylene oxide is slidingly connected to the inner side of the fixing frame 12, a protective shell 2 for cleaning the metal impurities on the surface of the filter plate 13 is fixedly connected to the inner side of the housing 1, an air outlet joint 15 is communicated with the interior of the housing 1, the protective shells 2 are symmetrically distributed on the left side and the right side of the interior of the housing 1, and the positions of the protective shells 2 and the fixing frame 12 correspond.
The inside sliding connection of protective housing 2 has the slide 21 that is used for clearing up filter plate 13 surface metal impurity, the inboard swing joint of protective housing 2 has the conduction subassembly 22 that is used for controlling the action of slide 21, conduction subassembly 22 includes swing joint in protective housing 2 inside is used for controlling the inside reciprocating sliding of slide 21, the bushing 222 that is used for driving slide 21 to slide in the outside swing joint of lead screw 221, the fixed connection is used for controlling bushing 222 outside in place stop in lead screw 221, the fixed connection is outside the protective housing 2 provides motor 224 of power for lead screw 221, motor 224 and lead screw 221 pass through connecting axle fixed connection, contact 223 corresponds with bushing 222's position, the length specification of lead screw 221 matches with the altitude specification of mount 12, lead screw 221 passes through threaded rotation with bushing 222 and is connected, motor 224 is connected with contact 223 electricity, the contact 223 triggers, and then make motor 224 stop the circular telegram.
Based on the first embodiment, the surface of the filter plate 13 filters the gathered metal impurities to affect the transportation of the ethylene oxide gas, the user operates the motor 224 to electrify and operate to drive the lead screw 221 to rotate on the inner side of the protective shell 2, the lead screw 221 rotates to drive the contact 223 to rotate, the lead screw 221 rotates to drive the sleeve plate 222 to move under the limiting action of the sliding seat 21, the sliding seat 21 moves to drive the sliding seat 21 to slide up and down reciprocally on the inner side of the protective shell 2, the sliding seat 21 slides to drive the scraping brush 23 to move along the direction of the collecting opening 24 and clean the metal impurities on the surface of the filter plate 13, the metal impurities fall into the inner side of the collecting opening 24 until entering the concave plate 25 under the driving of the scraping brush 23, when the sleeve plate 222 reciprocates until contacting with the contact 223 on the outer side of the lead screw 221, the scraping brush 23 resets, and the motor 224 stops electrifying.
After the ethylene oxide is used, the impurity removing opening 261 is opened by separating the blocking plate 262 from the concave plate 25 by a user operating the screw, metal impurities on the inner side of the concave plate 25 are discharged through the impurity removing opening 261, and after the metal impurities are discharged, the concave plate 25 is sealed and closed by matching the blocking plate 262 with the impurity removing opening 261.
The outside fixedly connected with of slide 21 is used for clearing up scraping brush 23 of metal impurity, the collection mouth 24 that is used for collecting metal impurity has been seted up to the surface of shell 1, the outside fixedly connected with of shell 1 is used for storing the recess 25 of metal impurity, the outside swing joint of recess 25 has the seal assembly 26 that is used for controlling recess 25 and opens and close, the position of scraping brush 23 and filter plate 13 corresponds, the position of scraping brush 23 and collection mouth 24 corresponds, recess 25 and collection mouth 24 correspond, seal assembly 26 includes the edulcoration mouth 261 that opens in recess 25 bottom, peg graft the closure plate 262 at the inboard of edulcoration mouth 261, closure plate 262 and recess 25 pass through metal screw fixed connection.
The screw rod 221 rotates to enable the sliding seat 21 to slide on the inner side of the protective shell 2, the sliding seat 21 slides to drive the scraping brush 23 to move to clean the filtered and accumulated metal impurities on the surface of the filter plate 13, and the metal impurities are accumulated on the inner side of the concave plate 25 through the collecting opening 24, so that the metal impurities after the ethylene oxide filtration are automatically cleaned, the air passage of the filter plate 13 is prevented from being blocked, and the practicability of the ethylene oxide filtration device is improved.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. An ethylene oxide filter comprising a housing (1), characterized in that: the novel filter is characterized in that an air inlet connector (11) used for connecting the shell (1) with an ethylene oxide steel cylinder is fixedly connected to the outer part of the shell (1), a fixing frame (12) used for installing a filter piece is fixedly connected to the inner part of the shell (1), a filter plate (13) used for purifying ethylene oxide metal impurities is slidingly connected to the inner side of the fixing frame (12), an opening and closing assembly (14) used for replacing the filter plate (13) is movably connected to the outer part of the shell (1), and an air outlet connector (15) used for exhausting ethylene oxide gas is fixedly connected to the outer part of the shell (1);
the inner side of the shell (1) is fixedly connected with a protective shell (2) for cleaning metal impurities on the surface of the filter plate (13), the inner side of the protective shell (2) is connected with a sliding seat (21) for cleaning the metal impurities on the surface of the filter plate (13) in a sliding manner, the inner side of the protective shell (2) is movably connected with a conducting component (22) for controlling the sliding seat (21) to act, the novel metal cleaning device is characterized in that a scraping brush (23) for cleaning metal impurities is fixedly connected to the outer portion of the sliding seat (21), a collecting opening (24) for collecting the metal impurities is formed in the surface of the outer shell (1), a concave plate (25) for storing the metal impurities is fixedly connected to the outer portion of the outer shell (1), and a sealing assembly (26) for controlling the concave plate (25) to open and close is movably connected to the outer portion of the concave plate (25).
2. An ethylene oxide filter according to claim 1, wherein: the air inlet connector (11) is communicated with the inside of the shell (1), the air inlet connector (11) is connected with an ethylene oxide steel cylinder through a hose, the fixing frame (12) is corresponding to the inside of the shell (1) in position and matched with the shell in specification, and the filter plate (13) is made of non-woven fabrics.
3. An ethylene oxide filter according to claim 1, wherein: the filter plate (13) is in sliding sealing connection with the fixing frame (12), the opening and closing assembly (14) comprises a sliding port (141) which is arranged on the surface of the shell (1) and used for replacing the filter plate (13), and an airtight plate (142) which is covered on the inner side of the sliding port (141) and used for sealing the sliding port (141), and the airtight plate (142) is in sliding sealing connection with the sliding port (141).
4. An ethylene oxide filter according to claim 1, wherein: the air outlet connector (15) is communicated with the inside of the shell (1), the protective shells (2) are symmetrically distributed on the left side and the right side of the inside of the shell (1), and the positions of the protective shells (2) and the fixing frame (12) correspond to each other.
5. An ethylene oxide filter according to claim 1, wherein: the conduction assembly (22) comprises a screw rod (221) movably connected to the inside of the protective shell (2) and used for controlling the sliding seat (21) to slide back and forth on the inner side of the protective shell (2), a sleeve plate (222) movably connected to the outside of the screw rod (221) and used for driving the sliding seat (21) to slide, a contact (223) fixedly connected to the outside of the screw rod (221) and used for controlling the sleeve plate (222) to stop in place, and a motor (224) fixedly connected to the outside of the protective shell (2) and used for providing power for the screw rod (221).
6. An ethylene oxide filter as claimed in claim 5, wherein: the motor (224) is fixedly connected with the screw rod (221) through a connecting shaft, the contact (223) corresponds to the position of the sleeve plate (222), the length specification of the screw rod (221) is matched with the height specification of the fixing frame (12), the screw rod (221) is rotationally connected with the sleeve plate (222) through threads, the motor (224) is electrically connected with the contact (223), and the contact (223) is triggered, so that the motor (224) stops electrifying.
7. An ethylene oxide filter according to claim 1, wherein: the scraping brush (23) corresponds to the filter plate (13), the scraping brush (23) corresponds to the collecting opening (24), the concave plate (25) corresponds to the collecting opening (24), the sealing assembly (26) comprises a impurity removing opening (261) formed in the bottom of the concave plate (25) and a blocking plate (262) inserted into the inner side of the impurity removing opening (261), and the blocking plate (262) is fixedly connected with the concave plate (25) through metal screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223049968.2U CN219149560U (en) | 2022-11-17 | 2022-11-17 | Filter for ethylene oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223049968.2U CN219149560U (en) | 2022-11-17 | 2022-11-17 | Filter for ethylene oxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219149560U true CN219149560U (en) | 2023-06-09 |
Family
ID=86640106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223049968.2U Active CN219149560U (en) | 2022-11-17 | 2022-11-17 | Filter for ethylene oxide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219149560U (en) |
-
2022
- 2022-11-17 CN CN202223049968.2U patent/CN219149560U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231025 Address after: 124021 Hongqi Street, Shuangtaizi District, Liaoning, Panjin Patentee after: NORTH HUAJIN CHEMICAL INDUSTRIES Group Corp. Address before: 124000 Hongqi Street, Shuangtaizi District, Liaoning, Panjin Patentee before: LIAONING NORTH CHEMICAL INDUSTRY CO.,LTD. |
|
| TR01 | Transfer of patent right |