CN211962830U - Breathing and toxin filtering unit for gas mask - Google Patents
Breathing and toxin filtering unit for gas mask Download PDFInfo
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- CN211962830U CN211962830U CN202020240038.7U CN202020240038U CN211962830U CN 211962830 U CN211962830 U CN 211962830U CN 202020240038 U CN202020240038 U CN 202020240038U CN 211962830 U CN211962830 U CN 211962830U
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Abstract
The utility model relates to a gas mask is with straining poison unit of breathing in, including the cover body mounting hole, cover body mounting hole upper end inwards is equipped with spacing arch, is equipped with the valve seat of breathing in on the cover body mounting hole, and the valve seat of breathing in includes the backup pad, is equipped with the cylinder wall along the excircle is perpendicular in the backup pad, and cylinder wall outside top-down interval is equipped with spacing arch and lower spacing arch, go up spacing arch with cover body mounting hole up end laminating is sealed, lower spacing arch with the press fit is equipped with the valve seat of breathing in and cover body mounting hole sealing connection's sealing ring between the spacing arch, is equipped with a plurality of air vents in the backup pad, and the backup pad inboard is equipped with the valve piece of breathing in with the air vent cooperation, thread seal connects has the canister on the cylinder wall. Can make the valve seat of breathing in and the mounting hole is sealed tighter, in effectively preventing external poison gas to get into gas mask when changing the canister, can prevent that canister threaded connection is not hard up simultaneously, overall structure design is more reasonable, and the security is higher.
Description
The technical field is as follows:
the utility model relates to a gas mask device technical field, concretely relates to gas mask is with breathing in gas filtration unit.
Background art:
a gas mask is a personal protective device that protects the respiratory organs, eyes and face of the human body. As shown in fig. 1, the conventional gas mask mainly includes a mask body, an eye window, an inhalation toxin filtering unit, an exhaust communication unit, a head band, and other components. The inhalation gas filtration unit is a defender of the gas mask and plays a role in filtering toxic gas and guiding the filtered gas into the interior of the gas mask. The existing inhalation toxin filtering unit mainly comprises an inhalation valve seat, an inhalation valve sheet and a toxin filtering tank (toxin filter), wherein the inhalation valve seat is arranged at the mounting hole of a cover body by a press fit method, the inhalation valve sheet is arranged on the inhalation valve seat by pretightening force, and the toxin filtering tank is arranged on the inhalation valve seat. The structure meets the gas protection requirement to a certain extent, but along with the continuous improvement of the gas mask requirement, the structure has some defects, firstly, the connection between the gas suction valve seat and the mounting hole has the risk of loose connection and even gas leakage in the long-time use process, and the main reason is that the structural design of the gas suction valve seat and the mounting hole has the defect of insufficient limit, so that the gas suction valve seat and the mounting hole are easy to generate relative displacement under the action of external force; secondly, the safety can not be ensured when the canister is replaced in a toxic environment, only one layer of sealing measure of the air suction valve sheet is arranged in the existing air suction canister unit, and the sealing measure is opened when a human body inhales and does not play a sealing role, so that when the canister is replaced, the air suction valve sheet is opened or partially opened only by slightly inhaling air or the air pressure in the gas mask is lower than the external atmospheric pressure, and finally toxic gas is inhaled; thirdly, the threaded connection adopted when the existing canister is installed on the gas mask is easy to loosen after long-time use, resulting in gas leakage. In view of the above, there is a need for further improvements to the inhalation canister unit of existing respirators that can be further improved.
The above description is included in the technical recognition scope of the inventors, and does not necessarily constitute the prior art.
The utility model has the following contents:
the invention aims to solve the problems in the prior art and provides an air suction and poison filtering unit for a gas mask, which can enable an air suction valve seat and a mounting hole to be sealed more tightly, effectively prevent external poison gas from entering the gas mask when a canister is replaced, and simultaneously prevent the threaded connection of the canister from loosening, and has more reasonable overall structural design and higher safety.
The invention adopts the following technical scheme to realize the purpose:
the utility model provides a gas mask is with straining poison unit of breathing in, includes the cover body mounting hole, cover body mounting hole upper end inwards is equipped with spacing arch, be equipped with the valve seat of breathing in on the cover body mounting hole, the valve seat of breathing in includes the backup pad, the backup pad top is equipped with the drum wall perpendicularly, drum wall outside top-down interval is equipped with spacing arch and lower spacing arch, go up spacing arch with cover body mounting hole up end laminating is sealed, lower spacing arch with the press fit is equipped with between the spacing arch will the valve seat of breathing in with cover body mounting hole sealing connection's sealing ring, be equipped with a plurality of air vents in the backup pad, the backup pad inboard is equipped with the valve piece of breathing in with the air vent cooperation, screw thread sealing connection has the canister on the drum wall.
The limiting protrusion comprises a protrusion A which is parallel to the supporting plate and a protrusion B which is connected with the tail end of the protrusion A and is arranged inwards.
The included angle between the bulge B and the bulge A is 45-90 degrees.
Go up spacing arch with protruding A laminating, protruding B laminates with lower spacing arch, the sealing ring install by cover body mounting hole, protruding A, protruding B and lower spacing arch form in the space.
And the upper limiting bulge edge part is vertically provided with an outer limiting bulge wrapping the outer wall of the cover body mounting hole.
And at least one annular sealing ring for sealing the canister and the air suction valve seat is radially arranged on the upper limiting bulge.
The gas canister sealing device is characterized in that an additional sealing mechanism which is matched with the gas canister and works is arranged on the supporting plate, the additional sealing mechanism comprises a supporting column which is vertically arranged in the supporting plate along the circumferential direction, a sealing plate which seals the vent hole is movably arranged on the supporting column, a spring which drives the sealing plate to move to seal the vent hole is arranged between the supporting column and the sealing plate, and a driving device which is matched with the gas canister and separates the sealing plate from the vent hole is arranged on the supporting plate.
The air vent is arranged between the inner sealing ring and the outer sealing ring, and a through hole is formed in the position, corresponding to the inner sealing ring, of the sealing plate.
The driving device comprises a plurality of supporting guide rails vertically arranged on the supporting plate in the circumferential direction, reversing wheels are arranged at the upper ends of the supporting guide rails, sliding blocks are arranged on the supporting guide rails and arranged below the canister, the canister drives the sliding blocks to move, traction ropes are arranged on the sliding blocks, one ends of the traction ropes are connected with the sliding blocks, and the other ends of the traction ropes bypass the reversing wheels and are connected with the sealing plate.
The canister comprises a shell, wherein a charcoal impregnated canister material is arranged in the shell, a connecting cylinder bulge is arranged at the lower end of the shell, threads connected with the air suction valve seat threads are arranged on the outer wall of the cylinder bulge, the end part of the cylinder bulge pushes the sliding block to move, an air inlet is arranged in the middle of the upper end of the canister, and an air outlet is arranged in the middle of the lower end of the canister.
The utility model adopts the above structure, following beneficial effect can be brought: by improving the structure of the cover body mounting hole and the structure of the air suction valve seat and matching with the sealing ring, a wrapping type connection mode is realized, the air suction valve seat is ensured to be connected with the cover body mounting hole in a sealing manner, and the connection is firm and reliable; by designing the accessory sealing mechanism and skillfully cooperating with the canister in a linkage manner, the sealing plate is separated from the vent hole after the canister is installed, so that ventilation is realized, and when the canister is disassembled, the vent hole is sealed by the sealing plate under the action of the spring, so that even if the pressure in the gas mask is lower than the external pressure, no gas leakage occurs, and the canister is ensured to be reliably sealed when replaced in a toxic environment; after the canister is installed, the bottom end of the cylinder bulge of the canister presses the slider, the spring is pressed, the traction rope is tightened, and the spring provides a pre-tightening force for the threaded connection of the canister, so that the problem that the threaded connection of the canister is easy to loosen is solved.
Description of the drawings:
FIG. 1 is a schematic diagram of a prior art respirator;
FIG. 2 is a schematic structural view of the inhalation toxin filtering unit of the present invention;
FIG. 3 is a sectional view of the inhalation toxin filter unit of the present invention;
FIG. 4 is an exploded view of the inhalation toxin filter unit of the present invention;
FIG. 5 is a schematic structural view of the air intake valve seat of the present invention;
FIG. 6 is a schematic structural view of the present invention without the accessory sealing mechanism;
fig. 7 is a schematic structural view of the driving device of the present invention;
fig. 8 is a schematic view of the working principle of the driving device of the present invention;
in the figure, 1, a cover body mounting hole, 2, a limiting protrusion, 201, a protrusion A, 202, a protrusion B, 3, an air suction valve seat, 301, a support plate, 302, a cylindrical wall, 303, an upper limiting protrusion, 304, a lower limiting protrusion, 305, a vent hole, 306, an air suction valve sheet, 307, an outer limiting protrusion, 4, a sealing ring, 5, a canister, 501, a shell, 502, a carbon impregnated toxin filtering material, 503, threads, 504, an air inlet, 505, an air outlet, 6, an annular sealing ring, 7, an additional sealing mechanism, 701, a support column, 702, a sealing plate, 703, a spring, 704, a driving device, 7041, a support guide rail, 7042, a reversing wheel, 7043, a sliding block, 7044, a traction rope, 705, an inner sealing ring, 706, an outer sealing ring, 707, a through hole, 8, a cover body, 9, an eye window, 10, an air suction toxin filtering unit, 11, an exhaust conversation unit, 12 and a headband are included.
The specific implementation mode is as follows:
in order to more clearly explain the overall concept of the invention, the following detailed description is given by way of example in conjunction with the accompanying drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.
Furthermore, the terms "upper", "lower", "a", "B" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the location of the indicated technical feature.
In the invention, it should be noted that the existing gas mask mainly comprises a cover body 8, an eye window 9, an air suction and toxin filtering unit 10, an exhaust communication unit 11, a head band 12 and other parts; this application mainly improves the design to inhaling the poison filtering unit, and other parts refer to prior art can. In addition, the filtering principle of a canister in the air suction and toxin filtering unit is the same as that of the prior art, and the improved place is the part which is matched with the air suction valve seat and is in threaded connection with the air suction valve seat.
In the present invention, unless otherwise expressly stated or limited, the terms "provided", "disposed", "connected", and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; may be a mechanical connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1-8, an inhalation toxin filtering unit for a gas mask comprises a cover body mounting hole 1, wherein a non-toxic gas filtered by the inhalation toxin filtering unit can be led into the gas mask, a limiting bulge 2 is inwards arranged at the upper end of the cover body mounting hole 1, an inhalation valve seat 3 is arranged on the cover body mounting hole 1, the inhalation valve seat 3 comprises a support plate 301, a cylindrical wall 302 is vertically arranged on the support plate 301 along the excircle, an upper limiting bulge 303 and a lower limiting bulge 304 are arranged at the outer side of the cylindrical wall 302 at intervals from top to bottom, the upper limiting bulge 303 and the upper end face of the cover body mounting hole 1 are sealed in an attaching manner, a sealing ring 4 for connecting the inhalation valve seat 3 and the cover body mounting hole 1 in a sealing manner is arranged between the lower limiting bulge 304 and the limiting bulge 2 in a press fit manner, a plurality of vent holes 305 are arranged on the support plate 301, an inhalation valve sheet 306 which is matched with the vent holes 305 for breathing is arranged at, the air suction valve piece 306 is mainly used for conducting a pressure deformation vent hole when air is sucked so that air enters the gas mask, the air suction valve piece 306 is mainly made of natural rubber and has certain elasticity, when the air tightness is ensured, the air suction valve piece is attached to the air suction valve seat through pretightening force, the air suction valve piece is required to have cold resistance, heat resistance and high mechanical strength, the existing installation and structural design of the air suction valve piece and the air suction valve seat are directly adopted, and the canister 5 is connected to the cylinder wall 302 in a threaded sealing mode. Through improving cover body mounting hole 1 structure and the valve seat 3 structure of breathing in, at cooperation sealing ring 4, realize parcel formula connected mode, ensure to breathe in valve seat 2 and cover body mounting hole 1 sealing connection, and firm in connection is reliable.
The limiting protrusion 2 comprises a protrusion A201 arranged parallel to the support plate 301 and an inward protrusion B202 connected with the end of the protrusion A201. The protrusion a201 and the protrusion B202 cooperate to achieve the limit in two directions.
The included angle between the bulge B202 and the bulge A201 is 45-90 degrees, so that the sealing ring 3 is deformed and pressed, the parts are attached more tightly, and more reliable sealing is provided.
The upper limiting bulge 303 is attached to the bulge A201, the bulge B202 is attached to the lower limiting bulge 304, and the sealing ring 4 is installed in a space formed by the cover body installation hole 1, the bulge A201, the bulge B202 and the lower limiting bulge 304. The connection mode of formation parcel formula can carry on spacingly to each angle at cooperation sealing ring 4, and then realizes firm in connection, sealed reliable characteristics.
The edge of the upper limit bulge 303 is vertically provided with an outer limit bulge 307 for wrapping the outer wall of the cover body mounting hole 1. Further improve cover body mounting hole 1 and inhale valve seat 3 fastness of being connected.
At least one annular sealing ring 6 for sealing the canister 5 and the air suction valve seat 3 is radially arranged on the upper limiting bulge 303. In practice, 2 sealing rings are preferred, the ring-shaped sealing ring 6 ensuring the sealing between the canister 5 and the upper limiting bulge 303.
The support plate 301 is provided with an additional sealing mechanism 7 which is matched with the canister 5 to work, the additional sealing mechanism 7 comprises support columns 701 which are vertically arranged on the support plate 301 along the circumferential direction, 3-4 support columns 701 are preferably uniformly arranged along the circumferential direction at intervals, a sealing plate 702 which seals the vent holes 305 is movably arranged on each support column 701, the structural form of the sealing plate 702 is not limited as long as all the vent holes 305 can be sealed, the sealing plate 702 is preferably in a disc-shaped structural form, a spring 703 which drives the sealing plate 702 to move to seal the vent holes 305 is arranged between each support column 701 and the corresponding sealing plate 702, and the support plate 301 is provided with a driving device 704 which is matched with the canister 5 to separate the sealing plate 702 from the vent holes 305. Through design annex sealing mechanism 7, and ingenious and the cooperation of canister 5, realize when canister 5 installs the back, closing plate 702 breaks away from air vent 305, realizes the ventilation, when canister 5 dismantles, closing plate 702 seals air vent 305 under the effect of spring 703, even realize that gas mask internal pressure is less than external pressure, the technical problem of gas leakage can not appear yet, realizes guaranteeing this sealed reliable when the canister is changed under toxic environment.
An inner sealing ring 705 and an outer sealing ring 706 are arranged on the supporting plate 301, the vent hole 305 is arranged between the inner sealing ring 705 and the outer sealing ring 706, and a through hole 707 is arranged at the position of the sealing plate 702 corresponding to the inner sealing ring 705. Through the design of the inner sealing ring 705 and the outer sealing ring 706, the sealing plate 702 can better seal the vent hole 305, and through the design of the through hole 707, air can rapidly enter the vent hole 305 through the through hole 707, so that the air suction resistance is reduced.
The driving device 704 comprises a plurality of supporting guide rails 7041 vertically arranged on the supporting plate 301 along the circumferential direction, the supporting guide rails 7041 may be in a dovetail groove structure, preferably 3 to 4 supporting guide rails 7041 are arranged at equal intervals along the circumferential direction, further, the number of the supporting guide rails 7041 is the same as the number of the supporting columns 701, the upper end of the supporting guide rail 701 is provided with a reversing wheel 7042, preferably, the upper end of the supporting guide rail is provided with 2 reversing wheels at intervals along the radial direction, so that the stress direction of the traction rope 7044 is ensured to be perpendicular to the supporting plate 301, and the action effect of force is optimal. The supporting guide rail 7041 is provided with a sliding block 7043, the sliding block 7043 is arranged below the canister 5, the canister 5 drives the sliding block 7043 to move, the sliding block 7043 is provided with a traction rope 7044, one end of the traction rope 7044 is connected with the sliding block 7043, and the other end of the traction rope 7044 bypasses the reversing wheel 7042 and is connected with the sealing plate 702. The operation of the drive driver 704 can be achieved by means of a screw-mounted movement of the canister 5.
Canister 5 includes casing 501, be equipped with the impregnated carbon canister material in the casing 501, casing 501 lower extreme is equipped with connects the drum arch 502, be equipped with on the protruding 502 outer wall of drum with inhale valve seat 3 threaded connection's screw 503, canister 5 upper end middle part is equipped with air inlet 504, and the lower extreme middle part is equipped with gas outlet 505. The end of the cylindrical projection 502 pushes the sliding block 7043 to move. After the canister 5 is installed, the bottom end of the cylindrical protrusion 502 of the canister 5 presses the sliding block 7043, the spring 703 is pressed, the traction rope 7044 is tightened, and the spring 703 simultaneously provides a pre-tightening force for the threaded connection of the canister 5, so that the problem that the threaded connection of the canister 5 is easy to loosen is solved.
The utility model discloses the theory of operation of breathing in and filtering poison unit:
before the canister 5 is installed, the sealing plate 702 is attached to the outer side of the vent hole 305 to seal under the action of the spring 703, and meanwhile, the slider 7043 is brought to the upper limit position through the traction rope 7044, the air suction valve piece 306 does not deform at the moment to seal the inner side of the vent hole 305, and air leakage does not occur even if the internal pressure of the gas mask is lower than the external atmosphere; when the canister 5 is installed, the cylindrical bulge 502 of the canister 5 is screwed into the air suction valve seat 3 through threaded connection, along with the constant screwing of the canister 5, when the bottom of the cylindrical bulge 502 touches the slider 7043, the canister 5 is screwed in continuously through threaded connection, meanwhile, the cylindrical bulge 502 pushes the slider 7043 to move along the support guide rail 7041 towards the support plate 301, the slider 7044 pulls the sealing plate 702 through the pulling rope 7044 to move towards the direction far away from the vent 305 against the action force of the spring 703, so that the vent 305 is opened, when the cylindrical bulge 502 is screwed in the bottom, the shell 501 of the canister 5 is attached and sealed with the upper limiting bulge 303, the slider 7043 reaches the lower limit position, and the vent 305 is completely opened; when inhaling, the outside air is filtered by the canister 5 to inhale the clean air into the inhaling valve seat 3, then enters the vent hole 305 through the through hole 707, the clean air presses and deforms the inhaling valve sheet 306 through the vent hole 305, thereby opening the inner side of the vent hole 305, the clean air enters the gas mask, and the inhaling and filtering effects are completed. The utility model provides a inhale and strain poison unit has firm in connection, sealed effectual, change the canister under toxic environment.
The above-mentioned specific embodiments can not be regarded as the restriction to the scope of protection of the utility model, to technical personnel in this technical field, it is right the utility model discloses any replacement improvement or transform that embodiment made all fall within the scope of protection of the utility model.
The parts of the present invention not described in detail are the known techniques of those skilled in the art.
Claims (10)
1. The utility model provides a breathing in poison filtering unit for respirator which characterized in that: comprises that
The upper end of the cover body mounting hole is inwards provided with a limiting bulge;
the valve seat of breathing in, the valve seat of breathing in is installed in the cover body mounting hole, the valve seat of breathing in includes the backup pad, edgewise portion is equipped with the cylinder wall perpendicularly in the backup pad, cylinder wall outside top-down interval is equipped with spacing arch and lower spacing arch, go up spacing arch with cover body mounting hole up end laminating is sealed, lower spacing arch with the press fit is equipped with between the spacing arch with the valve seat of breathing in with cover body mounting hole sealing connection's sealing ring, be equipped with a plurality of air vents in the backup pad, the backup pad inboard is equipped with the valve piece of breathing in with the air vent cooperation, threaded seal has the poison filtering jar on the cylinder wall.
2. The inhalation canister unit for a respirator according to claim 1, wherein: the limiting protrusion comprises a protrusion A which is parallel to the supporting plate and a protrusion B which is connected with the tail end of the protrusion A and is arranged inwards.
3. The inhalation canister unit for a respirator according to claim 2, wherein: the included angle between the bulge B and the bulge A is 45-90 degrees.
4. The inhalation canister unit of claim 3, wherein: go up spacing arch with protruding A laminating, protruding B laminates with lower spacing arch, the sealing ring install by cover body mounting hole, protruding A, protruding B and lower spacing arch form in the space.
5. The inhalation canister unit for a respirator according to claim 1, wherein: and the upper limiting bulge edge part is vertically provided with an outer limiting bulge wrapping the outer wall of the cover body mounting hole.
6. The inhalation canister unit for a respirator according to claim 1, wherein: and at least one annular sealing ring for sealing the canister and the air suction valve seat is radially arranged on the upper limiting bulge.
7. The inhalation canister unit for a respirator according to claim 1, wherein: the gas canister sealing device is characterized in that an additional sealing mechanism which is matched with the gas canister and works is arranged on the supporting plate, the additional sealing mechanism comprises a supporting column which is vertically arranged in the supporting plate along the circumferential direction, a sealing plate which seals the vent hole is movably arranged on the supporting column, a spring which drives the sealing plate to move to seal the vent hole is arranged between the supporting column and the sealing plate, and a driving device which is matched with the gas canister and separates the sealing plate from the vent hole is arranged on the supporting plate.
8. The inhalation canister unit of claim 7, wherein: the air vent is arranged between the inner sealing ring and the outer sealing ring, and a through hole is formed in the position, corresponding to the inner sealing ring, of the sealing plate.
9. The inhalation canister unit of claim 7, wherein: the driving device comprises a plurality of supporting guide rails vertically arranged on the supporting plate in the circumferential direction, reversing wheels are arranged at the upper ends of the supporting guide rails, sliding blocks are arranged on the supporting guide rails and arranged below the canister, the canister drives the sliding blocks to move, traction ropes are arranged on the sliding blocks, one ends of the traction ropes are connected with the sliding blocks, and the other ends of the traction ropes bypass the reversing wheels and are connected with the sealing plate.
10. The inhalation canister unit of claim 9, wherein: the canister comprises a shell, wherein a charcoal impregnated canister material is arranged in the shell, a connecting cylinder bulge is arranged at the lower end of the shell, threads connected with the air suction valve seat threads are arranged on the outer wall of the cylinder bulge, the end part of the cylinder bulge pushes the sliding block to move, an air inlet is arranged in the middle of the upper end of the canister, and an air outlet is arranged in the middle of the lower end of the canister.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020240038.7U CN211962830U (en) | 2020-03-02 | 2020-03-02 | Breathing and toxin filtering unit for gas mask |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020240038.7U CN211962830U (en) | 2020-03-02 | 2020-03-02 | Breathing and toxin filtering unit for gas mask |
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| Publication Number | Publication Date |
|---|---|
| CN211962830U true CN211962830U (en) | 2020-11-20 |
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ID=73377060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020240038.7U Active CN211962830U (en) | 2020-03-02 | 2020-03-02 | Breathing and toxin filtering unit for gas mask |
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| Country | Link |
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| CN (1) | CN211962830U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111214773A (en) * | 2020-03-02 | 2020-06-02 | 太原工业学院 | Breathing and toxin filtering unit for gas mask |
-
2020
- 2020-03-02 CN CN202020240038.7U patent/CN211962830U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111214773A (en) * | 2020-03-02 | 2020-06-02 | 太原工业学院 | Breathing and toxin filtering unit for gas mask |
| CN111214773B (en) * | 2020-03-02 | 2023-11-14 | 太原工业学院 | Breathing in and straining poison unit for breathing mask |
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| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230814 Address after: 200120 building C, No. 888, Huanhu West 2nd Road, Lingang New Area, China (Shanghai) pilot Free Trade Zone, Shanghai Patentee after: Shanghai dapingtang Chemical Co.,Ltd. Address before: No.31 Xinlan Road, Jiancaoping District, Taiyuan City, Shanxi Province Patentee before: Taiyuan Institure of Technology |
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| TR01 | Transfer of patent right |