CN108361057B - Bubble dust remover - Google Patents

Bubble dust remover Download PDF

Info

Publication number
CN108361057B
CN108361057B CN201810100180.9A CN201810100180A CN108361057B CN 108361057 B CN108361057 B CN 108361057B CN 201810100180 A CN201810100180 A CN 201810100180A CN 108361057 B CN108361057 B CN 108361057B
Authority
CN
China
Prior art keywords
bubble
air supply
supply pipe
fan
air
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.)
Active
Application number
CN201810100180.9A
Other languages
Chinese (zh)
Other versions
CN108361057A (en
Inventor
李洋
隋晓峰
赵岩
贾向东
张志平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Jingneng Technology Co ltd
Original Assignee
Beijing Jingneng Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Beijing Jingneng Technology Co ltd filed Critical Beijing Jingneng Technology Co ltd
Priority to CN201810100180.9A priority Critical patent/CN108361057B/en
Publication of CN108361057A publication Critical patent/CN108361057A/en
Application granted granted Critical
Publication of CN108361057B publication Critical patent/CN108361057B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F5/00Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
    • E21F5/02Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21FSAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
    • E21F5/00Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
    • E21F5/02Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires by wetting or spraying
    • E21F5/06Fluids used for spraying

Abstract

The invention provides a bubble dust remover, which comprises: the blower is provided with an air outlet channel; an air blowing device comprising: the first air supply pipe and the second air supply pipe are mutually separated, and the first air supply pipe and the second air supply pipe are connected with an air outlet channel of the blower; a frothing device comprising: the bubble board and fan, wherein, the water tank is including holding the basin of foaming liquid, the top of basin is the opening, the water tank still includes: a partition plate extending obliquely upward from the side wall of the water tank; the bubble plate is coaxially connected with the fan through a rotating shaft, and the rotating shaft is arranged on the partition plate; the bubble plate comprises a plurality of bubble rings which surround the periphery of the rotating shaft, and the plane where the bubble rings are positioned is a vertical plane; the invention achieves better dust removal effect.

Description

Bubble dust remover
Technical Field
The invention relates to the field of dust removal, in particular to a bubble dust remover which can be used for working conditions such as mines, construction sites, interior decoration and the like.
Background
At present, coal dust hazard is one of five disasters of mines, and the hazard is mainly expressed in two aspects: firstly, occupational diseases (such as pneumoconiosis) which cause frequent occurrence in the coal industry; secondly, the potential safety hazard of coal dust explosion. According to the measurement, under the condition that no dustproof measure is adopted, the dust concentration of the flour for fully mechanized mining of coal mines in China is up to 4000-6000 mg/m < 3 >, and even if a spray dustproof measure is adopted, most of mine dust hazards are still serious. Therefore, how to reduce the concentration of coal dust more effectively in order to ensure the safe and efficient exploitation of the working surface is a very important technical problem to be solved. Spray dust fall is one of the current dust fall measures commonly used in coal mines, but the dust fall effect on tiny particles is not very ideal.
In summary, the following problems exist in the prior art: the existing underground dust removing technology has poor dust removing effect.
Disclosure of Invention
The invention provides a bubble dust remover which aims to solve the problem of poor dust removing effect of the existing underground dust removing technology.
To this end, the invention proposes a bubble dust remover comprising:
the blower is provided with an air outlet channel;
an air blowing device comprising: the first air supply pipe and the second air supply pipe are mutually separated, and the first air supply pipe and the second air supply pipe are connected with an air outlet channel of the blower;
a frothing device comprising: the bubble board and fan, wherein, the water tank is including holding the basin of foaming liquid, the top of basin is the opening, the water tank still includes: a partition plate extending upward or obliquely upward from a side wall of the water tank;
the bubble plate is coaxially connected with the fan through a rotating shaft, and the rotating shaft is arranged on the partition plate;
the bubble plate comprises a plurality of bubble rings which surround the periphery of the rotating shaft, and the plane where the bubble rings are positioned is a vertical plane;
the first air supply pipe supplies air to the fan, and the second air supply pipe blows out bubbles generated by the bubble ring on the bubble plate.
Further, the first air supply pipe and the second air supply pipe are respectively positioned at two sides of the partition plate.
Further, the number of the bubble plates and the fans is multiple, and the number of the rotating shafts is multiple.
Further, the first air supply pipe is provided with a plurality of first air supply nozzles facing the fan.
Further, a plurality of the frothing rings are arranged in an annular matrix around the rotating shaft.
Further, the second air supply pipe is provided with a plurality of second air supply nozzles facing the foaming ring.
Further, the first air supply pipe and the second air supply pipe are parallel to each other and perpendicular to the air outlet channel.
Further, the axis of the rotating shaft is perpendicular to the central lines of the first air supply pipe and the second air supply pipe.
Further, the air supply direction of the first air supply nozzle is parallel to the axis of the rotating shaft.
Further, the first air supply pipe and the second air supply pipe are straight pipes, a plurality of the rotating shafts are linearly arranged, and a plurality of the first air supply nozzles are linearly arranged.
Mechanism of action: the applicant finds that in the research dust removal process, the main reason of poor spray dust settling effect is that the contact time of water mist and dust is short, the relative speed is high, and the dust capturing capability is weak, so that the applicant is inspired by a child to blow bubbles, firstly bubbles which fly along with wind are generated, the flow speed of the bubbles and the dust in the air is close, the contact time of the bubbles and the dust is prolonged, and meanwhile, the adsorption effect of a foaming agent in a bubble liquid on the dust is realized. On one hand, tiny dust in slow flowing gas in a mine tunnel can be adhered to the surface of a bubble, and the dust in the air can be dropped to the ground along with the falling or cracking of the bubble; on the other hand, the contaminated dust enclosed by bubbles also settles.
The invention uses the blower to connect with the blower device, a blower pipe behind the blower device blows the fan to rotate, the bubble plate is coaxially connected with the fan, thus driving the bubble plate to rotate along with the fan; the bubble plate is placed in the middle water tank and filled with liquid for producing bubbles, (1/3 of the bubble plate is immersed in the bubble producing liquid); the air supply pipe in front of the air supply device is aligned with the position of the foaming ring in the foaming plate. After the power is on, the blower is started to drive the fan and the bubble plate to rotate. Because the liquid is adhered to the ring position of the bubble plate, wind blows out in front, so that a large number of bubbles continuously appear to form bubble waterfall, and a better dust removing effect is achieved.
Drawings
FIG. 1 is a schematic perspective view of a bubble dust remover according to the first angle;
FIG. 2 is a schematic perspective view of a bubble dust remover according to a second angle;
FIG. 3 is a schematic diagram of a front view structure of a bubble dust remover of the invention;
FIG. 4 is a schematic top view of a bubble duster according to the invention;
FIG. 5 is a schematic diagram of a left-hand structure of a bubble dust remover of the invention;
FIG. 6 is a schematic diagram of a fan according to the present invention;
fig. 7 is a schematic structural view of the bubble plate of the present invention.
Reference numerals illustrate:
1. an air supply device; 2. a blower; 3. a foaming device; 4. a water tank; 5. a first air supply pipe; 6. a second air supply pipe; 7. a first air supply nozzle; 8. a second air supply nozzle; 9. a fan; 10. a bubble plate; 11. a rotating shaft; 15. a bubbling ring; 21. an air outlet channel; 41. a partition board.
Detailed Description
For a clearer understanding of technical features, objects, and effects of the present invention, the present invention will be described with reference to the accompanying drawings.
As shown in fig. 1, 2, 3, 4 and 5, the bubble dust remover of the present invention comprises:
a blower 2 having an air outlet passage 21; the side wall of the air outlet channel 21 is made of metal, for example, steel;
the air blowing device 1 includes: the first air supply pipe 5 and the second air supply pipe 6 are separated from each other, and the first air supply pipe 5 and the second air supply pipe 6 are connected with an air outlet channel 21 of the blower;
the bubbling device 3 includes: the water tank 4, bubble board 10 and fan 9, wherein, the water tank 4 includes the basin that holds foaming liquid, the top of basin is the opening, the water tank still includes: a partition 41 extending upward or obliquely upward from the side wall of the water tank; the water tank 4 may be made of a steel plate;
as shown in fig. 6 and 7, the bubble plate 10 and the fan 9 are coaxially connected through a rotating shaft 11, and the rotating shaft 11 is arranged on the partition 41; the bubble plate 10 and the fan 9 are respectively positioned at two sides of the partition board 41, and the partition board separates the bubble plate 10 and the fan 9 so as not to interfere with each other; the partition 41 is in a circular arc shape, and is bent towards the fan 9 to semi-surround the fan 9 so as to achieve a better air return effect and better air receiving effect; the side of the partition plate 41 facing the bubble plate 10 is in an upward circular arc shape, and plays a role of an air deflector, and the air blown from the second air supply pipe 6 is smoothly guided, so that bubbles can smoothly rise;
as shown in fig. 7, the bubble plate 10 includes a plurality of bubble rings 15 around the rotation shaft, where the bubble rings 15 are, for example, circular rings, and made of stainless steel, and the planes of the bubble rings 15 are vertical planes; in the rotating process of the bubble plate, the bubble device can generate rows of bubbles at one time, and can generate waterfall bubbles or bubble walls successively.
The first air supply pipe 5 supplies air to the fan 9, and the second air supply pipe 6 blows out bubbles generated by a bubble ring on the bubble plate.
Further, the first air supply pipe 5 and the second air supply pipe 6 are respectively located at two sides of the partition 41, and both the first air supply pipe and the second air supply pipe can be made of stainless steel, so that arrangement is facilitated, interference is reduced, and space is compact.
Further, the number of the bubble plates 10 and the fans 9 is plural, and the number of the rotating shafts 11 is plural, so that more bubbles can be generated, and the dust removing area is larger.
Further, the first air supply pipe 5 is provided with a plurality of first air supply nozzles 7 facing the fan, and the caliber of the first air supply nozzles 7 is smaller than that of the first air supply pipe 5, so that the fan can receive larger wind speed.
Further, a plurality of the frothing rings 15 are arranged in an annular matrix around the rotation axis to form circumferentially continuous bubbles.
Further, the second air supply pipe 6 is provided with a plurality of second air supply nozzles 8 facing the foaming ring, so as to blow out bubbles generated by the foaming ring. The caliber of the second air supply nozzle 8 is smaller than that of the second air supply pipe 6.
Further, the first air supply duct 5 and the second air supply duct 6 are, for example, circular pipes, parallel to each other and perpendicular to the air outlet channel 21, so that the lateral space of the blower can be fully utilized, and the normal air exhaust of the blower is not affected.
Further, the axis of the rotating shaft 11 is perpendicular to the center lines of the first air supply pipe and the second air supply pipe, so that the fan and the bubble plate can receive enough wind force.
Further, the air supply direction of the first air supply nozzle 7 is parallel to the axis of the rotating shaft 11, so that the wind power loss is small.
Further, the first air supply pipe 5 and the second air supply pipe 6 are straight pipes, so that the air supply pipe is convenient to manufacture, the rotating shafts 11 are in linear arrangement, the first air supply nozzles 7 are in linear arrangement, and the second air supply nozzles 8 are also in linear arrangement, so that the air supply and the installation manufacture are convenient.
Further, the diameter of the bubbles is 20mm to 40mm, for example, the diameter of the bubble ring 15 is controlled such that the diameter of the bubble ring 15 is 20mm to 40mm, thereby controlling the diameter of the bubbles to be 20mm to 40mm, preferably the diameter of the bubbles to be 30mm, to be suitable for downhole dust removal.
Further, the wind speed of the two air pipes is 1 to 2m/s, the air speed is too large, bubbles are easily blown to be broken, the air speed is too small, the rotation of the fan 9 is too slow, bubbles are not easy to spread, the effect is good, the applicant selects the wind speed of the two air pipes to be 1 to 2m/s, and the wind speed of the two air pipes to be 1.5m/s through repeated experiments, so that the bubbles are reasonable in density, good in diffusivity and complete in shape.
The implementation process of the invention is as follows:
the first blast pipe 5 is provided with a plurality of (e.g. 7) first blast nozzles 7 facing the fan, the second blast pipe 6 is provided with a plurality of (e.g. 7) second blast nozzles 8 facing the frothing ring, the fan 9 and the water tank 4 are connected by adopting bearings, the fan 9 is provided with a rotating shaft 11 arranged in the bearings, and the bubble plate 10 is directly arranged on the rotating shaft 11 of the fan 9, so that the bubble plate 10 is driven to move when the fan 9 rotates.
The blower can be a GXF-II type blower, the blower is fixed on the ground through anchor bolts, the blower is connected with the air supply device, the first air supply pipe 5 blows the fan to rotate, and the bubble plate 10 is coaxially connected with the fan 9, so that the bubble plate is driven to rotate along with the fan; the bubble plate is placed in the middle water tank and filled with bubble-making liquid (foaming liquid), and 1/3 of the bubble plate is immersed in the foaming liquid; the second air supply pipe 6 in front of the air supply device is aligned with the hollow frothing ring 15 of the frothing plate, the frothing ring 15 is for example a circular ring, and during the rotation of the frothing plate, the frothing ring 15 brings out the frothing liquid to form a thin film capable of frothing. After the power is on, the blower is started to drive the fan and the bubble plate to rotate. The bubble ring 15 of the bubble plate is stained with liquid, and wind blows out in front, so that a large number of bubbles continuously appear, and bubble waterfall can be formed continuously.
The invention has simple structure and flexible rotation, and can ensure that bubbles continuously appear in a large amount to form bubble waterfall. The dust remover is provided with 2 to 3 dust removers underground, so that tiny dust in a roadway can be effectively removed, the dust removal purpose is achieved, an additional power supply is not needed, and bubbles can be generated by using the air blower. The blower is a common underground ventilation device, the blower is needed underground even if the dust removing device is not used, no additional power supply is needed, and bubbles can be generated by using the blower. The invention fully saves investment, reduces the occupied area of new equipment and achieves two purposes on the basis of utilizing the existing underground air blower.
The foregoing is illustrative of the present invention and is not to be construed as limiting the scope of the invention. In order that the components of the invention may be combined without conflict, any person skilled in the art shall make equivalent changes and modifications without departing from the spirit and principles of the invention.

Claims (10)

1. A bubble dust remover, characterized in that the bubble dust remover comprises:
the blower is provided with an air outlet channel;
an air blowing device comprising: the first air supply pipe and the second air supply pipe are mutually separated, and the first air supply pipe and the second air supply pipe are connected with an air outlet channel of the blower;
a frothing device comprising: the bubble board and fan, wherein, the water tank is including holding the basin of foaming liquid, the top of basin is the opening, the water tank still includes: a partition plate extending upward or obliquely upward from a side wall of the water tank;
the bubble plate is coaxially connected with the fan through a rotating shaft, and the rotating shaft is arranged on the partition plate;
the bubble plate and the fan are respectively positioned at two sides of the partition board, and the partition board separates the bubble plate from the fan so as not to interfere with each other;
the bubble plate comprises a plurality of bubble rings which surround the periphery of the rotating shaft, and the plane where the bubble rings are positioned is a vertical plane; in the rotating process of the bubble plate, the bubble device can generate rows of bubbles at one time, and can generate waterfall bubbles or bubble walls successively;
the first air supply pipe supplies air to the fan, and the second air supply pipe blows out bubbles generated by the bubble ring on the bubble plate.
2. The bubble and dust removing machine of claim 1, wherein the first air supply pipe and the second air supply pipe are respectively located at two sides of the partition plate.
3. The bubble and dust removing machine according to claim 1, wherein the bubble plates and the fans are plural in number, and the rotating shafts are plural in number.
4. The bubble and dust removing machine according to claim 1, wherein the first air supply duct is provided with a plurality of first air supply nozzles facing the fan.
5. The bubble and dust removing machine of claim 1, wherein a plurality of said bubble rings are in an annular matrix around said axis of rotation.
6. The bubble and dust removing machine according to claim 1, wherein the second air supply duct is provided with a plurality of second air supply nozzles facing the bubble ring.
7. The bubble and dust removing machine of claim 1, wherein the first and second air supply pipes are parallel to each other and perpendicular to the air outlet passage.
8. The bubble and dust removing machine of claim 1, wherein the axis of the rotating shaft is perpendicular to the center lines of the first air supply pipe and the second air supply pipe.
9. The bubble and dust removing machine of claim 4, wherein the air supply direction of the first air supply nozzle is parallel to the axis of the rotating shaft.
10. The bubble and dust removing machine of claim 9, wherein the first air supply pipe and the second air supply pipe are straight pipes, a plurality of the rotating shafts are linearly arranged, and a plurality of the first air supply nozzles are linearly arranged.
CN201810100180.9A 2018-02-01 2018-02-01 Bubble dust remover Active CN108361057B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810100180.9A CN108361057B (en) 2018-02-01 2018-02-01 Bubble dust remover

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810100180.9A CN108361057B (en) 2018-02-01 2018-02-01 Bubble dust remover

Publications (2)

Publication Number Publication Date
CN108361057A CN108361057A (en) 2018-08-03
CN108361057B true CN108361057B (en) 2024-03-15

Family

ID=63007769

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810100180.9A Active CN108361057B (en) 2018-02-01 2018-02-01 Bubble dust remover

Country Status (1)

Country Link
CN (1) CN108361057B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112546772B (en) * 2020-11-27 2022-07-08 西南科技大学 Dust removal bubble generator and dust removal method thereof

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4348057A (en) * 1980-08-25 1982-09-07 B & J Manufacturing Company Blower and dust collecting machine and method of operation
JPH0842300A (en) * 1994-07-27 1996-02-13 Fujita Corp Dust elimination treatment method and dust elimination treatment device in tunnel work
DE19834500A1 (en) * 1998-07-31 2000-02-10 Anton Frank Soap bubble generator comprises rotating mounting with axial arms and rings to dip into soap solution and move past blower
CN2748143Y (en) * 2004-11-09 2005-12-28 徐辉 Machine for generating smoke and bubble on stage
CN2907813Y (en) * 2005-12-07 2007-06-06 方瑞丝玩具有限公司 Electric bubble machine
CN101368221A (en) * 2008-07-28 2009-02-18 洪国伟 Dehumidification air feeding device for ironmaking blast furnace
JP2009150139A (en) * 2007-12-21 2009-07-09 Sb Kogyo Kk Dust settling method applicable to tunnel blasting work
CN202611747U (en) * 2012-06-01 2012-12-19 安徽恒源煤电股份有限公司 Foam dust-collecting device for coal mine
CN202921184U (en) * 2012-11-01 2013-05-08 安徽理工大学 Mining foam generator
CN202970713U (en) * 2012-11-01 2013-06-05 安徽理工大学 Efficient foam dust removal device
CN204428839U (en) * 2015-01-29 2015-07-01 长安大学 Bubble generating machine
CN205370625U (en) * 2015-12-31 2016-07-06 河南理工大学 Safe and portable formula mine ventilation device
CN106823620A (en) * 2016-02-01 2017-06-13 滑黎明 Haze device is removed in the air
CN107575259A (en) * 2017-07-11 2018-01-12 王伟 Tunnel air cleaning system
CN207892641U (en) * 2018-02-01 2018-09-21 北京源深节能技术有限责任公司 Dust removing down-hole device

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4348057A (en) * 1980-08-25 1982-09-07 B & J Manufacturing Company Blower and dust collecting machine and method of operation
JPH0842300A (en) * 1994-07-27 1996-02-13 Fujita Corp Dust elimination treatment method and dust elimination treatment device in tunnel work
DE19834500A1 (en) * 1998-07-31 2000-02-10 Anton Frank Soap bubble generator comprises rotating mounting with axial arms and rings to dip into soap solution and move past blower
CN2748143Y (en) * 2004-11-09 2005-12-28 徐辉 Machine for generating smoke and bubble on stage
CN2907813Y (en) * 2005-12-07 2007-06-06 方瑞丝玩具有限公司 Electric bubble machine
JP2009150139A (en) * 2007-12-21 2009-07-09 Sb Kogyo Kk Dust settling method applicable to tunnel blasting work
CN101368221A (en) * 2008-07-28 2009-02-18 洪国伟 Dehumidification air feeding device for ironmaking blast furnace
CN202611747U (en) * 2012-06-01 2012-12-19 安徽恒源煤电股份有限公司 Foam dust-collecting device for coal mine
CN202921184U (en) * 2012-11-01 2013-05-08 安徽理工大学 Mining foam generator
CN202970713U (en) * 2012-11-01 2013-06-05 安徽理工大学 Efficient foam dust removal device
CN204428839U (en) * 2015-01-29 2015-07-01 长安大学 Bubble generating machine
CN205370625U (en) * 2015-12-31 2016-07-06 河南理工大学 Safe and portable formula mine ventilation device
CN106823620A (en) * 2016-02-01 2017-06-13 滑黎明 Haze device is removed in the air
CN107575259A (en) * 2017-07-11 2018-01-12 王伟 Tunnel air cleaning system
CN207892641U (en) * 2018-02-01 2018-09-21 北京源深节能技术有限责任公司 Dust removing down-hole device

Also Published As

Publication number Publication date
CN108361057A (en) 2018-08-03

Similar Documents

Publication Publication Date Title
CN110107337B (en) Underground dust removal method
WO2015194789A1 (en) Sensor-based motion control dust scattering suppression system
CN201988311U (en) Waste gas treatment device
CN108361057B (en) Bubble dust remover
CN201546750U (en) Foam generator for coal mine dust control
CN111298584B (en) Double-venturi pneumatic wet dust removal system
CN104453979B (en) The remodeling method of underground coal mine negative pressure-pumping dust collecting process
CN115646113A (en) A dust collecting equipment for carbon neutralization
CN111425240A (en) Underground ventilating duct with heating and humidifying functions for coal mining
CN112546772B (en) Dust removal bubble generator and dust removal method thereof
CN207892641U (en) Dust removing down-hole device
CN201752863U (en) Inner wall sand-blasting cleaning device of slender blind hole pipe fitting
CN215830544U (en) Special dust collector in colliery that dust collection efficiency is high
CN202707060U (en) Novel dust reduction spraying device for extraction of thin coal bed
CN104414595A (en) Novel automatic external wall cleaner
CN214391555U (en) Automatic foaming device
CN206681782U (en) The secondary spray of negative pressure device of explosion
CN113047897A (en) Wet-type dust removal system and method for underground cavern of hydropower station
CN202613997U (en) Smoke removal dusting machine of fire curve furnace
CN201141360Y (en) Wet-type dust-removal fan for mining
CN104018872B (en) A kind of mine wet-type air-actuated dust-cleaning equipment
CN213928420U (en) Tunnel spray dust removal device
NO330117B1 (en) Apparatus for filtering particulate material from a gas
CN201783117U (en) Humidifying, smoke preventing and dust removing fire extinguishing equipment
CN210993494U (en) A high efficiency dust collector that cools down for tunnel job site

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
CB02 Change of applicant information

Country or region after: China

Address after: 100142 lanhui building, 23 Dinghui Beili, Haidian District, Beijing

Applicant after: Beijing Jingneng Technology Co.,Ltd.

Address before: 100142 lanhui building, 23 Dinghui Beili, Haidian District, Beijing

Applicant before: BEIJING YUANSHEN ENERGY SAVING TECHNOLOGY Co.,Ltd.

Country or region before: China

CB02 Change of applicant information
GR01 Patent grant
GR01 Patent grant