CN212348151U - Efficient is dust fall equipment for construction - Google Patents
Efficient is dust fall equipment for construction Download PDFInfo
- Publication number
- CN212348151U CN212348151U CN201921501217.5U CN201921501217U CN212348151U CN 212348151 U CN212348151 U CN 212348151U CN 201921501217 U CN201921501217 U CN 201921501217U CN 212348151 U CN212348151 U CN 212348151U
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- dust
- dust collection
- fixed mounting
- supporting
- box
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- 239000000428 dust Substances 0.000 title claims abstract description 189
- 238000010276 construction Methods 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 238000009435 building construction Methods 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 abstract description 10
- 230000003028 elevating effect Effects 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 239000008187 granular material Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model provides an efficient dust fall equipment for construction relates to construction technical field, include: the dust collection device comprises a support base, a dust falling box, a first dust collection fan, a dust collection air port, a rotary support device, a lifting device and a dust exhaust box; the upper surface middle part fixed mounting who supports the base has the case that falls dirt, and suction fan fixed mounting is on the upper surface right side that supports the base, and keeps away from the right flank that falls the dirt case, and dust absorption wind gap fixed mounting is on the right flank of first dust absorption fan, and dust absorption wind gap lower surface middle part fixed mounting has rotation strutting arrangement, and elevating gear fixed mounting is on the lower surface right side in dust absorption wind gap, and dust exhaust case fixed mounting is on the upper surface left side that supports the base. The utility model discloses a dust fall case can effectual dust filter, through rotating the rotation of the multi-angle that strutting arrangement and elevating gear can effectual realization dust absorption wind gap, can more effectually realize subsiding the discharge to the dust through the dust exhaust case.
Description
Technical Field
The utility model relates to a construction technical field, more specifically say, in particular to dust fall equipment for efficient construction.
Background
A large amount of dust can appear in many places when building construction site operation, and the appearance of a large amount of dust can seriously influence staff's normal work, and long-time work in a large amount of dust environment can seriously influence staff's healthy simultaneously, and a large amount of dust also can produce serious air pollution to the environment on every side simultaneously.
SUMMERY OF THE UTILITY MODEL
Problem (A)
The invention aims to provide high-efficiency dust settling equipment for building construction, and solve the problems in the background technology.
(II) technical scheme
The utility model provides an efficient is dust fall equipment for construction, include: the dust collection device comprises a supporting base, universal wheels, a dust falling box, a first dust collection fan, supporting columns, a dust collection air port, a rotating supporting device, a lower supporting plate, an upper supporting plate, a supporting frame, a rotating shaft, a lifting device, a motor, a cam, a supporting rod, a rotating wheel, a swinging arm, a dust collection pipe, a first dust exhaust pipe, an inclined block, a dust collection box, sponge, an electric push rod, a dust exhaust box, a second suction fan, a dust falling pipeline, a second dust exhaust pipe, a water tank, a connecting water pipe, a trapezoidal block and a water exhaust pipe; universal wheels are fixedly mounted on the left side and the right side of the lower surface of the supporting base, the dust falling box is fixedly mounted in the middle of the upper surface of the supporting base, the first dust suction fan is fixedly mounted on the right side of the upper surface of the supporting base and is far away from the right side surface of the dust falling box, the supporting column is fixedly mounted on the right side of the upper surface of the supporting base and is far away from the right side surface of the first dust suction fan, the dust suction air port is fixedly mounted at the top of the supporting column through a rotating supporting device, the rotating supporting device comprises a lower supporting plate, an upper supporting plate, a supporting frame and a rotating shaft, the lower supporting plate is fixedly mounted at the top of the supporting column, the upper supporting plate is fixedly mounted in the middle of the lower surface of the dust suction air port and is fixedly connected with the lower supporting plate through the supporting frame, the lifting device comprises a motor, a cam, a supporting rod, a rotating wheel and a swinging arm, the lower surface of the motor is fixedly arranged on the upper surface of the supporting base, the left side surface of the motor is attached to the lower part of the right side surface of the supporting column, the cam is rotatably arranged on the outer side of an output shaft of the motor, one end of the supporting rod is fixedly arranged on the right side of the lower surface of the dust suction port, the other end of the supporting rod is rotatably connected with the cam through the rotating wheel, the swinging arm is rotatably arranged on the upper side of the front surface of the supporting column through a rotating shaft, the other end of the swinging arm is rotatably arranged on the front surface of the supporting rod and far away from the outer side of the rotating wheel, one end of the dust suction pipe is fixedly arranged on the right side of the first dust suction fan, the other end of the dust suction, the dust collection box is slidably mounted on the front surface of the supporting base, the sponge is fixedly mounted on the left side surface of the interior of the sponge, the electric push rod is fixedly mounted on the upper surface of the dust falling box and extends to the interior of the dust falling box, an extending part is attached to the right side surface of the sponge, the dust falling box is fixedly mounted on the left side surface of the dust falling box, the second suction fan is fixedly mounted in the dust falling box and is fixedly connected to the left side surface of the dust falling box through a connecting pipe and extends to the left side surface of the sponge, the dust falling pipeline is fixedly mounted on the left side of the interior of the dust falling box, one end of the second dust discharging pipe is fixedly mounted at the top of the second suction fan, the other end of the second dust discharging pipe is fixedly mounted on the upper portion of the right side surface of the dust falling pipeline and extends to the interior, the water tank is fixedly mounted on the left side of the upper surface of the, trapezoidal piece fixed mounting is in the inside both sides of dust fall pipeline, drain pipe fixed mounting is in the lower surface left side of supporting the base, and the outside of universal wheel is kept away from to the right flank, and the drain pipe extends to the bottom of trapezoidal piece.
Preferably, the length of the cam is smaller than the distance from the output shaft of the motor to the right side face of the support column.
Preferably, the dust suction pipe is a rubber telescopic hose.
Preferably, the dust collection box is of a structure that a handle is fixedly arranged on the front surface.
Preferably, the front surface of the supporting base is embedded with a sliding groove structure.
Preferably, the outer side of the connecting water pipe is fixedly provided with a one-way water valve structure, and the extension end is fixedly provided with a spray head structure.
(III) advantageous effects
The utility model discloses a rotation strutting arrangement and elevating gear can effectual realization dust absorption wind gap multi-angle rotate to the dust collection efficiency in effectual improvement dust absorption wind gap, improve work efficiency, can filter the interception to the large granule dust of smuggleing secretly in the dust through the left sponge of fixed mounting in dust falling incasement portion, can effectually realize through electric putter pushing away the effect to the dust of adsorbing the sponge right flank, thereby the effectual life who improves the sponge.
Secondly, can effectually introduce the dust that drops to the dust collection box inside through the sloping block structure of fixed mounting in dust falling box, can effectual realization be to the collection of large granule dust through the dust collection box to effectual realization is to cleaing away of large granule dust.
Moreover, can effectual realization carry out effectual dust fall effect to the inside dust of the dust exhaust pipe of discharging into under the cooperation of the structure of water tank and dust fall pipeline, position, can effectually discharge to fixing the inside drain pipe that supports the base lower surface with the mixture drainage of water and dust through trapezoidal piece.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is an enlarged schematic view of the structure of fig. 1A of the present invention.
Fig. 3 is an enlarged schematic view of the structure of fig. 1B of the present invention.
In fig. 1 to 3, the correspondence between the part names or lines and the reference numbers is:
the dust collection device comprises a support base 1, a universal wheel 2, a dust fall box 3, a first dust collection fan 4, a support column 5, a dust collection air port 6, a rotary support device 7, a lower support plate 71, an upper support plate 72, a support frame 73, a rotary shaft 74, a lifting device 8, a motor 81, a cam 82, a support rod 83, a rotary wheel 84, a swing arm 85, a dust collection pipe 9, a first dust discharge pipe 10, an inclined block 11, a dust collection box 12, a sponge 13, an electric push rod 14, a dust discharge box 15, a second suction fan 16, a dust fall pipeline 17, a second dust discharge pipe 18, a water tank 19, a connecting water pipe 20, a trapezoid block 21 and a drain pipe 22.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Please refer to fig. 1 to fig. 3:
the utility model provides an efficient dust fall equipment for construction, include: the dust collection device comprises a supporting base 1, a universal wheel 2, a dust fall box 3, a first dust collection fan 4, a supporting column 5, a dust collection air port 6, a rotating supporting device 7, a lower supporting plate 71, an upper supporting plate 72, a supporting frame 73, a rotating shaft 74, a lifting device 8, a motor 81, a cam 82, a supporting rod 83, a rotating wheel 84, a swinging arm 85, a dust collection pipe 9, a first dust discharge pipe 10, an inclined block 11, a dust collection box 12, a sponge 13, an electric push rod 14, a dust discharge box 15, a second suction fan 16, a dust fall pipeline 17, a second dust discharge pipe 18, a water tank 19, a connecting water pipe 20, a trapezoidal block 21 and a water discharge pipe 22; universal wheels 2 are fixedly installed on the left side and the right side of the lower surface of a supporting base 1, a dust falling box 3 is fixedly installed in the middle of the upper surface of the supporting base 1, a first dust suction fan 4 is fixedly installed on the right side of the upper surface of the supporting base 1 and is far away from the right side surface of the dust falling box 3, a supporting column 5 is fixedly installed on the right side of the upper surface of the supporting base 1 and is far away from the right side surface of the first dust suction fan 4, a dust suction air port 6 is fixedly installed on the top of the supporting column 5 through a rotating supporting device 7, the rotating supporting device comprises a lower supporting plate 71, an upper supporting plate 72, a supporting frame 73 and a rotating shaft 74, the lower supporting plate 71 is fixedly installed on the top of the supporting column 5, the upper supporting plate 72 is fixedly installed in the middle of the lower surface of the dust suction air port 6 and is, the lifting device 8 is fixedly arranged on the right side of the supporting column 5, the lifting device 8 comprises a motor 81, a cam 82, a supporting rod 83, a rotating wheel 84 and a swinging arm 85, the lower surface of the motor 81 is fixedly arranged on the upper surface of the supporting base 1, the left side surface is attached to the lower part of the right side surface of the supporting column 5, the cam 82 is rotatably arranged on the outer side of the output shaft of the motor 81, one end of the supporting rod 83 is fixedly arranged on the right side of the lower surface of the dust suction air port 6, the other end of the supporting rod 83 is rotatably connected with the cam 82 through the rotating wheel 84, the swinging arm 85 is rotatably arranged on the upper side of the front surface of the supporting column 5 through a rotating shaft 74, the other end of the swinging rod 83 is rotatably arranged on the front surface of the supporting rod 83 and far away from the outer side of, the other end is fixedly arranged on the right side surface of the dust falling box 3 and extends to the inside, the inclined block 11 is fixedly arranged inside the dust falling box 3, the dust collecting box 12 is slidably arranged on the front surface of the supporting base 1, the sponge 13 is fixedly arranged on the left side surface inside the sponge 13, the electric push rod 14 is fixedly arranged on the upper surface of the dust falling box 3 and extends to the inside of the dust falling box 3, the extending part is attached to the right side surface of the sponge 13, the dust discharging box 15 is fixedly arranged on the left side surface of the dust falling box 3, the second suction fan 16 is fixedly arranged inside the dust discharging box 15 and is fixedly connected to the left side surface of the dust falling box 3 through a connecting pipe and extends to the left side surface of the sponge 13, the dust falling pipeline 17 is fixedly arranged on the left side inside the dust discharging box 15, one end of the second dust discharging pipe 18 is fixedly arranged on the top of the second suction fan 16, the other end is fixedly arranged on the upper, water tank 19 fixed mounting is in the upper surface left side of dust exhaust case 15, and lower surface left side fixed mounting has connection water pipe 20, and connects water pipe 20 and extend to the inside of dust fall pipeline 17, and trapezoidal piece 21 fixed mounting is in the inside both sides of dust fall pipeline 17, and drain pipe 22 fixed mounting is in the lower surface left side of supporting base 1, and the right flank keeps away from the outside of universal wheel 2, and drain pipe 22 extends to the bottom of trapezoidal piece 21.
Wherein the length of the cam 82 is smaller than the distance from the output shaft of the motor 81 to the right side surface of the supporting column 5.
Wherein the dust suction pipe 9 is a rubber telescopic hose.
Wherein, the dust collection box 12 is a structure with a handle fixedly arranged on the front surface.
Wherein, the front of the supporting base 1 is embedded with a chute structure.
Wherein, the outside of connecting water pipe 20 is fixed with one-way water valve structure, and extension end fixed mounting has the shower nozzle structure.
Wherein, first dust absorption fan 4, second dust absorption fan 16, electric putter 14, motor 81 all are connected to external power supply through the wire, and its control is prior art, and the control end can set up in the one end of handle.
The specific use mode and function of the embodiment are as follows: when the dust-settling device is used, firstly, the dust is pushed to a place where dust settling is required to be carried out, then, the first dust-settling fan 4 and the second dust-settling fan 16 are opened, dust enters the dust-settling pipe 9 from the dust-settling air port 6 under the action of the first dust-settling fan 4, the dust is discharged into the dust-settling box 3 through the first dust-settling pipe 10 under the action of the first dust-settling fan 4, then, the dust moves towards the right side face of the sponge 13 under the action of the second dust-settling fan 16, large granular substances in the dust are filtered and intercepted under the structural action of the sponge 13, the dust filtered under the action of the second dust-settling fan 16 is discharged into the dust-settling pipeline 17 through the second dust-settling pipe 18, meanwhile, a worker opens the one-way water valve outside the drain pipe 20, water flows to the spray head through the drain pipe 20, the spray head discharges the dust discharged into the dust-settling pipeline 17 again, the mixture of dust and water flows into the inside of the drain pipe 22 to be discharged under the structural action of the trapezoid block 21, when a large amount of large-particle dust is accumulated on the right side surface of the sponge 13, the worker opens the electric push rod 14 to push down the large-particle dust accumulated on the right side surface of the sea surface 13 under the action of the electric push rod 14, the large-particle dust falling down flows into the inside of the dust collection box 12 under the action of the inclined block 11, when the dust collection box 12 is full, the worker can manually pull the handle outwards to take out and replace the dust collection box 12, when the dust in a construction site is large, the worker opens the motor 81, the motor 81 drives the cam 82 to rotate, the cam 82 drives the supporting rod 83 to vertically move upwards, the supporting rod 83 drives the supporting arm 85 to upwards and anticlockwise rotate along the outer side of the rotating shaft 74, when the supporting rod 83 moves upwards, the dust collection air inlet 6 upwards moves anticlockwise under the action of the rotating shaft 74, thereby realize the rotation of the multi-angle of dust absorption wind gap 6, the effectual dust fall effect that improves equipment, the structure through cam 82 can the effectual up-and-down work that realizes bracing piece 83.
The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (6)
1. The utility model provides an efficient is dust fall equipment for construction, includes: the dust collection device comprises a supporting base (1), universal wheels (2), a dust collection box (3), a first dust collection fan (4), a supporting column (5), a dust collection air port (6), a rotating supporting device (7), a lower supporting plate (71), an upper supporting plate (72), a supporting frame (73), a rotating shaft (74), a lifting device (8), a motor (81), a cam (82), a supporting rod (83), a rotating wheel (84), a swinging arm (85), a dust collection pipe (9), a first dust discharge pipe (10), an inclined block (11), a dust collection box (12), a sponge (13), an electric push rod (14), a dust discharge box (15), a second suction fan (16), a dust collection pipeline (17), a second dust discharge pipe (18), a water tank (19), a connecting water pipe (20), a trapezoidal block (21) and a drain pipe (22); the equal fixed mounting in lower surface left and right both sides that supports base (1) has universal wheel (2), dust falling box (3) fixed mounting is at the upper surface middle part that supports base (1), its characterized in that: the dust collection box is characterized in that the first dust collection fan (4) is fixedly arranged on the right side of the upper surface of the support base (1) and far away from the right side surface of the dust collection box (3), the support column (5) is fixedly arranged on the right side of the upper surface of the support base (1) and far away from the right side surface of the first dust collection fan (4), the dust collection air port (6) is fixedly arranged at the top of the support column (5) through a rotary support device (7), the rotary support device (7) comprises a lower support plate (71), an upper support plate (72), a support frame (73) and a rotating shaft (74), the lower support plate (71) is fixedly arranged at the top of the support column (5), the upper support plate (72) is fixedly arranged in the middle of the lower surface of the dust collection air port (6) and is fixedly connected with the lower support plate (71) through the support frame (73), and the support frame (73) is, the lifting device (8) is fixedly installed on the right side of the supporting column (5), the lifting device (8) comprises a motor (81), a cam (82), a supporting rod (83), a rotating wheel (84) and a swinging arm (85), the lower surface of the motor (81) is fixedly installed on the upper surface of the supporting base (1), the left side surface of the motor is attached to the lower portion of the right side surface of the supporting column (5), the cam (82) is rotatably installed on the outer side of an output shaft of the motor (81), one end of the supporting rod (83) is fixedly installed on the right side of the lower surface of the dust collection air port (6), the other end of the supporting rod (83) is rotatably connected with the cam (82) through the rotating wheel (84), the swinging arm (85) is rotatably installed on the upper side of the front surface of the supporting column (5) through a rotating shaft (74), the other end of the swinging arm is rotatably installed on the front surface of the, the other end is fixedly installed on the left side surface of a dust collection air port (6), one end of a first dust exhaust pipe (10) is fixedly installed on the left side of a first dust collection fan (4), the other end is fixedly installed on the right side surface of a dust falling box (3) and extends to the inside, an inclined block (11) is fixedly installed inside the dust falling box (3), a dust collection box (12) is slidably installed on the front surface of a support base (1), a sponge (13) is fixedly installed on the left side surface of the inside of the sponge (13), an electric push rod (14) is fixedly installed on the upper surface of the dust falling box (3) and extends to the inside of the dust falling box (3), an extending part is attached to the right side surface of the sponge (13), a dust exhaust box (15) is fixedly installed on the left side surface of the dust falling box (3), a second suction fan (16) is fixedly installed inside the dust exhaust box (15) and is fixedly connected to the left side surface of the dust falling box (3) through a connecting pipe, and extend to the left surface of sponge (13), dust fall pipeline (17) fixed mounting is in the inside left side of dust exhaust case (15), second dust exhaust pipe (18) one end fixed mounting is at the top of second suction fan (16), and other end fixed mounting is in the right flank upper portion of dust fall pipeline (17), and extends to inside, water tank (19) fixed mounting is in the upper surface left side of dust exhaust case (15), and lower surface left side fixed mounting has connection water pipe (20), and connects water pipe (20) and extend to the inside of dust fall pipeline (17), trapezoidal piece (21) fixed mounting is in the inside both sides of dust fall pipeline (17), drain pipe (22) fixed mounting is in the lower surface left side of supporting base (1), and the right flank keeps away from the outside of universal wheel (2), and drain pipe (22) extend to the bottom of trapezoidal piece (21).
2. The efficient dust settling device for building construction of claim 1, wherein: the length of the cam (82) is smaller than the distance from the output shaft of the motor (81) to the right side surface of the supporting column (5).
3. The efficient dust settling device for building construction of claim 1, wherein: the dust suction pipe (9) is a rubber telescopic hose.
4. The efficient dust settling equipment for building construction as claimed in claim 1, wherein the dust collection box (12) is a handle structure fixedly mounted on the front surface.
5. The efficient dust settling device for building construction of claim 1, wherein: the front surface of the supporting base (1) is embedded with a sliding groove structure.
6. The efficient dust settling device for building construction of claim 1, wherein: the outer side of the connecting water pipe (20) is fixedly provided with a one-way water valve structure, and the extending end is fixedly provided with a spray head structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921501217.5U CN212348151U (en) | 2019-09-10 | 2019-09-10 | Efficient is dust fall equipment for construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921501217.5U CN212348151U (en) | 2019-09-10 | 2019-09-10 | Efficient is dust fall equipment for construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212348151U true CN212348151U (en) | 2021-01-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921501217.5U Expired - Fee Related CN212348151U (en) | 2019-09-10 | 2019-09-10 | Efficient is dust fall equipment for construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212348151U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113787075A (en) * | 2021-08-03 | 2021-12-14 | 合肥建设装饰(集团)有限责任公司 | Dust suppression equipment for building |
| CN114130147A (en) * | 2021-07-13 | 2022-03-04 | 江苏威斯特环保冶金工程有限公司 | Wet-type dust removal and dust fall device for metallurgical furnace and use method thereof |
-
2019
- 2019-09-10 CN CN201921501217.5U patent/CN212348151U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114130147A (en) * | 2021-07-13 | 2022-03-04 | 江苏威斯特环保冶金工程有限公司 | Wet-type dust removal and dust fall device for metallurgical furnace and use method thereof |
| CN113787075A (en) * | 2021-08-03 | 2021-12-14 | 合肥建设装饰(集团)有限责任公司 | Dust suppression equipment for building |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xiong Qizhi Inventor after: Zhao Gaojian Inventor before: Zhao Gaojian |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230822 Address after: 518000, 23rd Floor, Olympic Building, No. 2 Shangbao Road, Futian District, Shenzhen, Guangdong Province Patentee after: Xiong Qizhi Address before: 471000 No.106, gate 3, building 2, West courtyard, No.8 Guangwen Road, Jianxi District, Luoyang City, Henan Province Patentee before: Zhao Gaojian |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210115 |