CN212496124U - Welding fume purifying equipment - Google Patents
Welding fume purifying equipment Download PDFInfo
- Publication number
- CN212496124U CN212496124U CN202021028324.3U CN202021028324U CN212496124U CN 212496124 U CN212496124 U CN 212496124U CN 202021028324 U CN202021028324 U CN 202021028324U CN 212496124 U CN212496124 U CN 212496124U
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- Prior art keywords
- box body
- smoke
- pipe
- welding fume
- filtering
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- 239000003496 welding fume Substances 0.000 title claims abstract description 22
- 239000000779 smoke Substances 0.000 claims abstract description 72
- 238000001914 filtration Methods 0.000 claims abstract description 30
- 238000000746 purification Methods 0.000 claims abstract description 26
- 239000000428 dust Substances 0.000 claims abstract description 16
- 239000003517 fume Substances 0.000 claims abstract description 12
- 230000008030 elimination Effects 0.000 claims abstract description 8
- 238000003379 elimination reaction Methods 0.000 claims abstract description 8
- 235000019504 cigarettes Nutrition 0.000 claims abstract description 6
- 230000003068 static effect Effects 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 47
- 238000010521 absorption reaction Methods 0.000 claims description 19
- 238000007599 discharging Methods 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 239000003063 flame retardant Substances 0.000 claims description 6
- 238000005192 partition Methods 0.000 claims description 5
- 238000005352 clarification Methods 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- 239000007921 spray Substances 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 229920000742 Cotton Polymers 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 238000009298 carbon filtering Methods 0.000 claims description 2
- 230000000391 smoking effect Effects 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract description 14
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 5
- 239000003546 flue gas Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000005684 electric field Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 208000028571 Occupational disease Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
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- Ventilation (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The utility model provides a welding fume purification device, which comprises a device body, a fume absorbing hood structure, an electrostatic elimination structure, a filtering structure, a fume exhaust structure and a dust collecting structure, and has reasonable structural design and simple operation; the welding fume in a large range in a factory building or a workshop can be quickly and effectively absorbed through the fume suction hood structure in the welding fume purification equipment, and the absorbed welding fume is subjected to fume purification through the static elimination structure and the filtering structure again, so that the purification effect is good, and the purification efficiency is high; the flue gas after the purification directly discharges through smoke exhaust structure, and the smoke and dust that produces among the purification process is discharged after collection of dust collecting structure, can purify effectively to the welding cigarette that produces in whole workshop or the factory building effectively, has satisfied people's demand more effectively, has solved the problem that exists among the prior art.
Description
Technical Field
The utility model relates to a purifier technical field, concretely relates to weld cigarette clarification plant.
Background
Welding, also known as fusion, welding, is a manufacturing process and technique for joining metals or other thermoplastic materials, such as plastics, in a heated, high temperature or high pressure manner. With the continuous expansion of welding production scale, a large amount of welding materials are consumed, the problems of labor hygiene and environmental protection of welding production are more and more emphasized, welding smoke can be continuously discharged in the working process of welding work, and workers can cause certain damage to bodies when inhaling the smoke; in addition, when the generated smoke dust is directly diffused into the atmosphere, the natural ecological balance can be damaged, and the environment pollution is caused. In the past, China has long paid insufficient attention to the environmental protection and sanitation problems of welding, and the welding occupational disease becomes an undeniable serious problem; therefore, it is imperative to change the dirty, dry and dangerous operation of the welding process into a green environment-friendly operation.
SUMMERY OF THE UTILITY MODEL
In order to partially effectively solve the defect that exists among the prior art, the utility model provides a weld cigarette clarification plant.
The utility model adopts the technical proposal that: a welding fume purification device comprises a device body, a fume suction hood structure, an electrostatic elimination structure, a filtering structure, a fume exhaust structure and a dust collection structure, wherein the device body comprises a box body with a containing cavity and a supporting plate positioned on the left side of the box body; the smoke suction hood structure is arranged on the supporting plate on the left side of the box body and is communicated with the inside of the box body; the static electricity eliminating structure comprises two insulating support rods and a conductive shaft, wherein the two insulating support rods are fixedly arranged on the inner wall of the box body in an up-down corresponding mode; the conductive shaft is arranged between the insulating support rods, two discharging blades are arranged on the conductive shaft and electrically connected with the conductive shaft, and a protective cylinder sleeved on the conductive shaft is arranged between the two discharging blades; the conductive shaft is electrically connected with a high-voltage generator; the filtering structure comprises a first filtering layer, a second filtering layer and a filtering rack clamped with the inner wall of the box body; a fixed plate is arranged on the inner wall of the top of the box body, and the smoke exhaust structure is arranged on the fixed plate; the dust collecting structure is arranged at the bottom in the box body and comprises a dust collecting drawer inserted in the box body.
A telescopic rod is arranged on the supporting plate on the left side of the box body, and the upper end of the telescopic rod is fixedly connected with a hoop; the smoke absorption hood structure comprises a universal smoke absorption pipe, and the right end of the universal smoke absorption pipe is in threaded connection with the left side of the box body and is communicated with the interior of the box body; the box body is internally provided with a universal smoke absorbing pipe; the left end of the universal smoke absorption pipe is provided with a smoke absorption hood through a flange, the middle part of the outer surface of the smoke absorption hood is connected with a handle through a screw, and the inner wall of the smoke absorption hood is connected with a fire retardant partition plate through a screw; the hoop is sleeved at one end of the universal smoke absorbing pipe close to the smoke absorbing cover.
The filter rack comprises a first support and a second support which are arranged at equal intervals along the vertical direction of the inner wall of the box body, the first filter layer is fixedly arranged on the first support, and the second filter layer is fixedly arranged on the second support; the first filter layer is a filter cotton layer, and the second filter layer is an activated carbon filter layer.
The smoke exhaust structure comprises a fan, a smoke guide pipe and an exhaust pipe, wherein the fan is arranged on the fixed plate through a bolt, an air inlet of the fan is connected with the smoke guide pipe, the smoke guide pipe comprises a main pipe and a branch pipe communicated with the main pipe, the main pipe penetrates through the fixed plate, and the branch pipe is positioned below the fixed plate; the air outlet of the fan is connected with the exhaust pipe, and the exhaust pipe penetrates through the box body and is located outside the box body.
A water tank is arranged on the supporting plate on the right side of the box body, a water pump is arranged on the inner wall of the bottom of the water tank, a water inlet pipe is inserted at a water inlet of the water pump, and a water outlet pipe is inserted at a water outlet of the water pump; one end of the water outlet pipe penetrates through the water tank and is positioned outside the water tank, and the end part of the water outlet pipe is provided with a spray head.
The air equalizing net adopts a honeycomb aluminum plate.
The fire-retardant clapboard adopts a stainless steel screen plate; the smoke absorption hood adopts a horn-shaped aluminum alloy hood.
An air guide cover is screwed at the outlet of the exhaust pipe.
The box body and the supporting plate are integrated; the bottom outer wall of the equipment body is close to four corners and is fixed with movable wheels through bolts.
The utility model relates to a welding fume purification device, which has reasonable structural design and simple operation; the welding fume in a large range in a factory building or a workshop can be quickly and effectively absorbed through the fume suction hood structure in the welding fume purification equipment, and the absorbed welding fume is subjected to fume purification through the static elimination structure and the filtering structure again, so that the purification effect is good, and the purification efficiency is high; the flue gas after the purification directly discharges through smoke exhaust structure, and the smoke and dust that produces among the purification process is discharged after collection of dust collecting structure, can purify effectively to the welding cigarette that produces in whole workshop or the factory building effectively, has satisfied people's demand more effectively, has solved the problem that exists among the prior art.
Drawings
FIG. 1 is a schematic structural view of a welding fume purification device of the present invention;
description of reference numerals:
1-a box body; 11-a support plate; 12-a fixing plate; 13-air equalizing net; 14-a moving wheel; 21-an insulating support rod; 22-a conductive shaft; 23-a discharge edge; 24-a protective cylinder; 31-a first filter layer; 32-a second filter layer; 4-a dust collection drawer; 51-a telescopic rod; 52-anchor ear; 61-universal fume tube; 62-smoke absorbing hood; 63-a handle; 64-fire barrier; 71-a fan; 72-smoke guide tube; 73-exhaust pipe; 731-air guide hood; 81-a water tank; 82-a water pump; and 83-water outlet pipe.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The utility model is described in detail with the accompanying drawings, in the embodiment of the utility model, the welding fume purification device comprises a device body, the device body comprises a box body 1 with a containing cavity and supporting plates 11 positioned at the left and right sides of the box body 1, and the box body 1 and the supporting plates 11 are integrated; moving wheels 14 are fixed on the outer wall of the bottom of the equipment body, close to the four corners, through bolts; a telescopic rod 51 is arranged on the supporting plate 11 on the left side of the box body 1, the upper end of the telescopic rod 51 is fixedly connected with an anchor ear 52, and a smoke suction hood structure is arranged at the anchor ear 52; the smoke absorption hood structure comprises a universal smoke absorption pipe 61, and the right end of the universal smoke absorption pipe 61 is in threaded connection with the left side of the box body 1 and is communicated with the interior of the box body 1; the air-equalizing net 13 is glued to the position, close to the universal smoke absorbing pipe 61, in the box body 1, the air-equalizing net 13 is made of a honeycomb aluminum plate, and the air-equalizing net 13 is favorable for uniformly pumping smoke into the box body 1, so that the purification efficiency is improved; a smoke absorption hood 62 is installed at the left end of the universal smoke absorption pipe 61 through a flange, the smoke absorption hood 62 is a horn-shaped aluminum alloy hood, the middle part of the outer surface of the smoke absorption hood 62 is connected with a handle 63 through a screw, the inner wall of the smoke absorption hood 62 is connected with a fire retardant partition plate 64 through a screw, and the fire retardant partition plate 64 is a stainless steel screen plate; the anchor ear 52 is sleeved on one end of the universal smoke absorbing pipe 61 close to the smoke absorbing hood 62, and the position of the smoke absorbing hood can be adjusted through the telescopic rod 51. A water tank 81 is arranged on the supporting plate 11 on the right side of the box body 1, a water pump 82 is arranged on the inner wall of the bottom of the water tank 81, a water inlet pipe is inserted at a water inlet of the water pump 82, and a water outlet pipe 83 is inserted at a water outlet of the water pump 82; one end of the water outlet pipe 83 penetrates through the water tank 81 and is positioned outside the water tank 81, and a spray head is arranged at the end part of the water outlet pipe 83.
The inner wall of the top of the box body 1 is provided with a fixed plate 12, the fixed plate 12 is provided with a smoke exhaust structure, the smoke exhaust structure comprises a fan 71, a smoke guide pipe 72 and an exhaust pipe 73, the fan 71 is installed on the fixed plate 12 through bolts, an air inlet of the fan 71 is connected with the smoke guide pipe 72, the smoke guide pipe 72 comprises a main pipe and a branch pipe communicated with the main pipe, the main pipe penetrates through the fixed plate 12, and the branch pipe is positioned below the fixed plate 12; the air outlet of the blower 71 is connected with an exhaust pipe 73, the exhaust pipe 73 penetrates through the box body 1 and is positioned outside the box body 1, an air guide cover 731 is screwed at the outlet of the exhaust pipe 73, and the air guide cover 731 can play a role in enhancing the rigidity of the outlet of the exhaust pipe 73.
A filtering structure is arranged below the smoke exhaust structure in the box body 1, the filtering structure comprises a first filtering layer 31, a second filtering layer 32 and a filtering rack clamped with the inner wall of the box body 1, the filtering rack comprises a first support and a second support which are arranged at equal intervals along the vertical direction of the inner wall of the box body 1, the first filtering layer 31 is fixedly arranged on the first support, and the second filtering layer 32 is fixedly arranged on the second support; the first filtering layer 31 is a filtering cotton layer, and the second filtering layer 32 is an activated carbon filtering layer; when clearing up filtration, the filter stand can be convenient dismantle from box 1 in get off, further carry out more omnidirectional washing to first filter layer 31, second filter layer 32, detachable filter stand makes the change that the filtration of using of a specified duration can be convenient, further improves this practicality of welding cigarette clarification plant.
An electrostatic elimination structure is arranged below the filtering structure in the box body 1, the electrostatic elimination structure comprises two insulating support rods 21 and a conductive shaft 22, and the two insulating support rods 21 are vertically and correspondingly fixedly arranged on the inner wall of the box body 1; the conductive shaft 22 is arranged between the insulating support rods 21, two discharging blades 23 are arranged on the conductive shaft 22, the discharging blades 23 are electrically connected with the conductive shaft 22, and a protective cylinder 24 sleeved on the conductive shaft 22 is arranged between the two discharging blades 23; the conductive shaft 22 is electrically connected with a high-voltage generator, the box body 1 is electrically connected with a grounding system, and the inner wall of the box body 1 is made of white steel material; after an external power supply is connected with a high-voltage generator, the discharge blade 23 starts to discharge strongly around the box body 1 to generate plasma; the welding smoke enters the high-voltage electric field from the smoke suction hood 62 under the action of the suction force of the fan 71, in the process, positive and negative ions collide with smoke particles to charge the smoke, the smoke particles move to the grounding electrode under the action of the electric field force, electrons are released when the smoke particles are in contact with the grounding electrode, the smoke particles are deposited on the grounding electrode, namely the inner wall of the box body 1, and the purified gas is discharged through the smoke discharge structure after passing through the filter structure from the upward direction, so that the smoke elimination effect is achieved. The bottom is provided with dust collection structure in the box 1, and dust collection structure is including pegging graft collection dirt drawer 4 in box 1, and the positive surface intermediate position screw connection of collection dirt drawer 4 has the pull handle.
When the utility model works, the fan 71 is started, the fume absorbing cover 62 at the end part of the universal fume absorbing pipe 61 is aligned to the welding fume generating position and is adjusted to a proper position through the telescopic rod 51; after the flue gas entering the box body 1 is primarily purified by the static electricity eliminating structure, the flue gas is purified again by the first filter layer 31 and the second filter layer 32; the purified flue gas is discharged through an exhaust pipe 73; clean water is stored in the water tank 81, the water pump 82 is started, the clean water is conveyed to the spray head through the water outlet pipe 83 to be sprayed out, and suspended dust in the working environment is reduced.
The present invention has been described above with reference to the accompanying drawings, but the technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (9)
1. The utility model provides a weld cigarette clarification plant which characterized in that: the device comprises a device body, a smoke suction hood structure, an electrostatic elimination structure, a filtering structure, a smoke exhaust structure and a dust collection structure, wherein the device body comprises a box body (1) with a containing cavity and supporting plates (11) positioned on the left side and the right side of the box body (1); the smoke suction hood structure is arranged on a support plate (11) on the left side of the box body (1) and communicated with the interior of the box body (1); the static electricity eliminating structure comprises two insulating support rods (21) and two conductive shafts (22), and the two insulating support rods (21) are fixedly arranged on the inner wall of the box body (1) in an up-down corresponding mode; the conductive shaft (22) is arranged between the insulating support rods (21), two discharging blades (23) are arranged on the conductive shaft (22), the discharging blades (23) are electrically connected with the conductive shaft (22), and a protective cylinder (24) sleeved on the conductive shaft (22) is arranged between the two discharging blades (23); the conductive shaft (22) is electrically connected with a high-voltage generator; the filtering structure comprises a first filtering layer (31), a second filtering layer (32) and a filtering rack clamped with the inner wall of the box body (1); a fixed plate (12) is arranged on the inner wall of the top of the box body (1), and the smoke exhaust structure is arranged on the fixed plate (12); the dust collecting structure is arranged at the bottom in the box body (1) and comprises a dust collecting drawer (4) inserted in the box body (1).
2. The welding fume purification device according to claim 1, wherein: a telescopic rod (51) is arranged on a supporting plate (11) on the left side of the box body (1), and the upper end of the telescopic rod (51) is fixedly connected with a hoop (52); the smoke absorption hood structure comprises a universal smoke absorption pipe (61), and the right end of the universal smoke absorption pipe (61) is in threaded connection with the left side of the box body (1) and is communicated with the inside of the box body (1); a wind equalizing net (13) is glued and arranged in the box body (1) and close to the universal smoking pipe (61); a smoke suction hood (62) is installed at the left end of the universal smoke suction pipe (61) through a flange, the middle part of the outer surface of the smoke suction hood (62) is connected with a handle (63) through a screw, and a fire retardant partition plate (64) is connected to the inner wall of the smoke suction hood (62) through a screw; the hoop (52) is sleeved at one end of the universal smoke absorbing pipe (61) close to the smoke absorbing cover (62).
3. The welding fume purification device according to claim 1, wherein: the filter rack comprises a first support and a second support which are arranged at equal intervals along the vertical direction of the inner wall of the box body (1), the first filter layer (31) is fixedly arranged on the first support, and the second filter layer (32) is fixedly arranged on the second support; the first filtering layer (31) is a filtering cotton layer, and the second filtering layer (32) is an activated carbon filtering layer.
4. The welding fume purification device according to claim 1, wherein: the smoke exhaust structure comprises a fan (71), a smoke guide pipe (72) and an exhaust pipe (73), wherein the fan (71) is installed on the fixed plate (12) through a bolt, an air inlet of the fan (71) is connected with the smoke guide pipe (72), the smoke guide pipe (72) comprises a main pipe and a branch pipe communicated with the main pipe, the main pipe penetrates through the fixed plate (12), and the branch pipe is located below the fixed plate (12); the air outlet of the fan (71) is connected with the exhaust pipe (73), and the exhaust pipe (73) penetrates through the box body (1) and is located outside the box body (1).
5. The welding fume purification device according to claim 1, wherein: a water tank (81) is arranged on a supporting plate (11) on the right side of the box body (1), a water pump (82) is arranged on the inner wall of the bottom of the water tank (81), a water inlet pipe is inserted at a water inlet of the water pump (82), and a water outlet pipe (83) is inserted at a water outlet of the water pump (82); one end of the water outlet pipe (83) penetrates through the water tank (81) and is positioned outside the water tank (81), and a spray head is arranged at the end part of the water outlet pipe (83).
6. The welding fume purification apparatus according to claim 2, wherein: the air equalizing net (13) is made of a honeycomb aluminum plate.
7. The welding fume purification apparatus according to claim 2, wherein: the fire-retardant partition plate (64) adopts a stainless steel screen plate; the fume suction hood (62) adopts a horn-shaped aluminum alloy hood.
8. The welding fume purification apparatus according to claim 4, wherein: an air guide cover (731) is screwed at the outlet of the exhaust pipe (73).
9. The welding fume purification device according to claim 1, wherein: the box body (1) and the supporting plate (11) are integrated; the outer wall of the bottom of the equipment body is close to four corners and is fixed with movable wheels (14) through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021028324.3U CN212496124U (en) | 2020-06-05 | 2020-06-05 | Welding fume purifying equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021028324.3U CN212496124U (en) | 2020-06-05 | 2020-06-05 | Welding fume purifying equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212496124U true CN212496124U (en) | 2021-02-09 |
Family
ID=74383469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021028324.3U Active CN212496124U (en) | 2020-06-05 | 2020-06-05 | Welding fume purifying equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212496124U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113134198A (en) * | 2021-05-19 | 2021-07-20 | 项宏霞 | Smoke prevention and fire extinguishing device convenient to operate |
-
2020
- 2020-06-05 CN CN202021028324.3U patent/CN212496124U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113134198A (en) * | 2021-05-19 | 2021-07-20 | 项宏霞 | Smoke prevention and fire extinguishing device convenient to operate |
| CN113134198B (en) * | 2021-05-19 | 2022-08-19 | 项宏霞 | Smoke prevention and fire extinguishing device convenient to operate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211216 Address after: 233000 southeast head of the intersection of Changzheng South Road and gongchi Road, high tech Zone, Bengbu City, Anhui Province Patentee after: Anhui gongchi Co.,Ltd. Address before: No.9501 Huangshan Avenue, Yuhui District, Bengbu City, Anhui Province Patentee before: Bengbu gongchi Special Purpose Vehicle Manufacturing Co.,Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A kind of welding smoke purification equipment Effective date of registration: 20220602 Granted publication date: 20210209 Pledgee: Bengbu Science and Technology Financing Guarantee Co.,Ltd. Pledgor: Anhui gongchi Co.,Ltd. Registration number: Y2022980006953 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230614 Granted publication date: 20210209 Pledgee: Bengbu Science and Technology Financing Guarantee Co.,Ltd. Pledgor: Anhui gongchi Co.,Ltd. Registration number: Y2022980006953 |