CN103128852A - Foam concrete foaming machine with automatic control system - Google Patents

Foam concrete foaming machine with automatic control system Download PDF

Info

Publication number
CN103128852A
CN103128852A CN2013100540594A CN201310054059A CN103128852A CN 103128852 A CN103128852 A CN 103128852A CN 2013100540594 A CN2013100540594 A CN 2013100540594A CN 201310054059 A CN201310054059 A CN 201310054059A CN 103128852 A CN103128852 A CN 103128852A
Authority
CN
China
Prior art keywords
valve
gas
automatic control
control system
pressure
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.)
Granted
Application number
CN2013100540594A
Other languages
Chinese (zh)
Other versions
CN103128852B (en
Inventor
王新祥
余其俊
杨仕超
李建新
王元光
张永健
郑靓
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.)
South China University of Technology SCUT
Original Assignee
GUANGDONG PROV INST OF BUILDING SCIENCE
South China University of Technology SCUT
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 GUANGDONG PROV INST OF BUILDING SCIENCE, South China University of Technology SCUT filed Critical GUANGDONG PROV INST OF BUILDING SCIENCE
Priority to CN201310054059.4A priority Critical patent/CN103128852B/en
Publication of CN103128852A publication Critical patent/CN103128852A/en
Application granted granted Critical
Publication of CN103128852B publication Critical patent/CN103128852B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

The invention discloses a foam concrete foaming machine with an automatic control system. The foam concrete foaming machine with the automatic control system comprises a foaming solution conveying system, a gas conveying system with the automatic control system, a gas-liquid mixed system and a foaming system. The foaming solution conveying system is composed of a liquid storage pot, a high-pressure plunger pump, a fluid flowmeter, a stop valve and a one-way valve. The gas conveying system with the automatic control system is composed of an air compressor, a stop valve, a tee joint ball valve, a pressure control switch, a pressure regulating valve, a gas flowmeter and an electromagnetic valve. The gas-liquid mixed system is composed of a gas-liquid mixing tank, multihole filling materials, a safety valve, a pressure gage, a vent valve, a drain valve and a stop valve. The foaming system is composed of a one-way valve, a foaming drum, multihole filling materials and a stop valve. According to the foam concrete foaming machine with the automatic control system, by parameter setting of the automatic control system from the aspect of a source, gas-liquid ratio is regulated and controlled automatically, the volume-weight and the uniformity of bubbles are controlled timely, and further, the uniformity of parameters of the volume-weight and the strength of mixing materials is controlled. The foam concrete foaming machine with the automatic control system has the advantages of being simple in structure, automatic in regulation, high in efficiency, convenient to operate and the like.

Description

A kind of foam concrete foaming machine with automatic control system
Technical field
The present invention relates to a kind of foam concrete foaming machine with automatic control system, project belongs to architectural engineering and municipal works applied technical field.
Background technology
The foam concrete foaming machine is used widely with light-weight foamed soil and roadbase backfill engineering etc. with light foam concrete engineering, municipal works building heat preservation is heat insulation, playing an important role in foam concrete, light-weight foamed native proportion design and engineering construction, is the construction machinery of architectural engineering and municipal works field extensive use.Still there is no the designing requirement of foam concrete foaming machine in China's current standard standard and make standard.In the foam concrete preparation process, bubble density often occurs and differ greatly, compound skewness, the problem such as the parameter errors such as unit weight, intensity and elastic modelling quantity are larger.
Summary of the invention
Can't automatically control the technical deficiency of gas-liquid ratio for current foam concrete foaming machine in good time, the purpose of this invention is to provide a kind of simple in structure, easy to operate, automatic control, result accurately, the foam concrete foaming machine of high efficiency.
A kind of foam concrete foaming machine with automatic control system provided by the invention comprises expanding foam solution induction system, the gas delivery system with automatic control system, gas-liquid mixed system and foamed system; Described expanding foam solution induction system be connected the gas delivery system of automatic control system and be connected with the gas-liquid mixed system respectively, the gas-liquid mixed system is connected with foamed system.
Described expanding foam solution induction system is comprised of fluid reservoir, high-pressure plunger pump, fluid flowmeter, stop valve and check valve, described fluid reservoir, high-pressure plunger pump, fluid flowmeter, stop valve and check valve are connected pipeline and connect successively, and described check valve connects the gas-liquid mixed system.
Described gas delivery system with automatic control system is comprised of air compressor machine, stop valve, tee ball valve, pressure control switch, pressure regulator valve, gas flowmeter and magnetic valve, described air compressor machine, stop valve, tee ball valve, pressure regulator valve, gas flowmeter and magnetic valve are connected pipeline and connect successively, described pressure control switch is arranged on pipeline between tee ball valve and control valve, described magnetic valve connects the gas-liquid mixed system, and another road of described tee ball valve connects foamed system.
Described gas-liquid mixed system is comprised of gas-liquid mixed tank, porous packing material, safety valve, Pressure gauge, air bleeding valve, tapping valve and stop valve, described porous packing material is arranged in the gas-liquid mixed tank, and described safety valve, Pressure gauge, air bleeding valve, tapping valve and stop valve are connected pipeline and are connected with the gas-liquid mixed tank respectively.
Described foamed system is comprised of check valve, foaming cylinder, porous packing material and stop valve, one end of described check valve is connected with the stop valve of gas-liquid mixed system by pipeline, the other end of check valve is connected by the end of pipeline with the foaming cylinder, the other end of foaming cylinder is connected with stop valve by pipeline, and described porous packing material is arranged in the foaming cylinder.
The upper end of described fluid reservoir is furnished with funnel, and the operating pressure of high-pressure plunger pump can reach 2.0MPa, and the range of flow of fluid flowmeter is at 0 ~ 25L/min.
The pressure limit of described air compressor machine is at 0 ~ 0.8MPa, the adjusting pressure limit of pressure regulator valve is at 0 ~ 0.8MPa, the range of flow of gas flowmeter is at 15 ~ 250L/min, and when magnetic valve reached 0.4MPa at the gas pressure of input gas-liquid mixed tank, high-pressure plunger pump was just started working.
The pressure that described gas-liquid mixed tank can bear is 4.0MPa, the porous packing material is comprised of one or more in macromolecular fibre, string, steel wire fibre and inorfil, the operating pressure of safety valve is set as 0.5MPa, and manometric working range is 0 ~ 2.5 MPa.
The material of described foaming cylinder is stainless steel material, and the porous packing material is comprised of one or more in macromolecular fibre, string, steel wire fibre and inorfil.
Described macromolecular fibre is selected polypropylene fibre or polyster fibre, and string is selected flax fiber, and steel wire fibre is selected steel wire lump or stainless steel sift net materials, and inorfil is selected glass fibre or rock wool fibers.
The present invention from the source by the parameter setting of automatic control system, auto-adjustment control gas-liquid ratio, control unit weight and the uniformity of bubble in good time, and then control the isoparametric uniformity of unit weight, intensity of compound, have simple in structure, automatic adjusting, efficient is high and the advantage such as easy to operate.
Description of drawings
Fig. 1 is that structure of the present invention forms schematic diagram.
The specific embodiment
As shown in Figure 1, the present invention comprises expanding foam solution induction system, the gas delivery system with automatic control system, gas-liquid mixed system and foamed system with the foam concrete foaming machine of automatic control system; The expanding foam solution induction system be connected the gas delivery system of automatic control system and be connected with the gas-liquid mixed system respectively, the gas-liquid mixed system is connected with foamed system.
The expanding foam solution induction system is comprised of fluid reservoir 2, high-pressure plunger pump 3, fluid flowmeter 4, stop valve 5 and check valve 6, fluid reservoir 2, high-pressure plunger pump 3, fluid flowmeter 4, stop valve 5 are connected with check valve and are connected successively by pipeline, and check valve 6 connects the gas-liquid mixed system.The upper end of fluid reservoir 2 is furnished with funnel 1, and the operating pressure of high-pressure plunger pump 3 can reach 2.0MPa, and the range of flow of fluid flowmeter 4 is at 0 ~ 25L/min.
Gas delivery system with automatic control system is comprised of air compressor machine 7, stop valve 8, tee ball valve 9, pressure control switch 10, pressure regulator valve 11, gas flowmeter 12 and magnetic valve 13, air compressor machine 7, stop valve 8, tee ball valve 9, pressure regulator valve 11, gas flowmeter 12 are connected with magnetic valve and are connected successively by pipeline, described pressure control switch 10 is arranged on pipeline between tee ball valve 9 and control valve 11, magnetic valve 13 connects the gas-liquid mixed system, and another road of tee ball valve 9 connects foamed system.The pressure limit of air compressor machine 7 is at 0 ~ 0.8MPa, the adjusting pressure limit of pressure regulator valve 11 is at 0 ~ 0.8MPa, the range of flow of gas flowmeter 12 is at 15 ~ 250L/min, and when magnetic valve 13 reached 0.4MPa at the gas pressure of input gas-liquid mixed tank 14, high-pressure plunger pump 3 was just started working.
The gas-liquid mixed system is comprised of gas-liquid mixed tank 14, porous packing material 15, safety valve 16, Pressure gauge 17, air bleeding valve 18, tapping valve 19 and stop valve 20, porous packing material 15 is arranged in gas-liquid mixed tank 14, and safety valve 16, Pressure gauge 17, air bleeding valve 18, tapping valve 19 are connected with stop valve and are connected with gas-liquid mixed tank 14 respectively by pipeline.The pressure that gas-liquid mixed tank 14 can bear is 4.0MPa, porous packing material 15 is comprised of one or more in macromolecular fibre, string, steel wire fibre and inorfil, safety valve 16 operating pressure be set as 0.5MPa, the working range of Pressure gauge 17 is 0 ~ 2.5 MPa.
Foamed system is comprised of check valve 21, foaming cylinder 22, porous packing material 23 and stop valve 24, one end of check valve 21 is connected with the stop valve 20 of gas-liquid mixed system by pipeline, the other end of check valve 21 is connected by the end of pipeline with foaming cylinder 22, the other end of foaming cylinder 22 is connected with stop valve 24 by pipeline, and porous packing material 23 is arranged in foaming cylinder 22.The material of foaming cylinder is stainless steel material, and porous packing material 23 is comprised of one or more in macromolecular fibre, string, steel wire fibre and inorfil.
Macromolecular fibre in porous packing material 15 and porous packing material 23 is selected polypropylene fibre or polyster fibre, and string is selected flax fiber, and steel wire fibre is selected steel wire lump or stainless steel sift net materials, and inorfil is selected glass fibre or rock wool fibers.
The present invention is as follows with the specific operation process of the foam concrete foaming machine of automatic control system:
(1) expanding foam solution course of conveying: expanding foam solution by fluid flowmeter 4, then flows into gas-liquid mixed tank 14 through liquid delivery tube by high-pressure plunger pump 3 sucking-off from fluid reservoir 2 after fluid flowmeter 4 is regulated.
(2) gas course of conveying: the gas of air compressor machine 7 output, be divided into two-way through tee ball valve 9, the one road flows to foaming cylinder 22, a tunnel flow through successively pressure control switch 10, pressure regulator valve 11, gas flowmeter 12 and magnetic valve 13, flows at last gas-liquid mixed tank 14.
(3) gas-liquid mixed process: expanding foam solution fully mixes with the gas that enters gas-liquid mixed tank 14, forms numerous air-bubble under the effect of porous packing material 15.
(4) foaming process: mixed foam in input foaming cylinder 22, further forms many micro-bubbles under the effect of porous packing material 23 in foaming cylinder 22 under the conveying effect of gas, then evenly sprayed by foam outlet.Evenly the time, gas flow, the fluid flow of fixing this moment are realized the automatic control of foam quality until foam density, quality, stability.
In a word, the present invention has exemplified above-mentioned preferred embodiment, but should illustrate, those skilled in the art can carry out various variations and remodeling.Therefore, unless such variation and remodeling have departed from scope of the present invention, otherwise all should be included in protection scope of the present invention.

Claims (10)

1. the foam concrete foaming machine with automatic control system, is characterized in that: comprise expanding foam solution induction system, the gas delivery system with automatic control system, gas-liquid mixed system and foamed system; Described expanding foam solution induction system be connected the gas delivery system of automatic control system and be connected with the gas-liquid mixed system respectively, the gas-liquid mixed system is connected with foamed system.
2. the foam concrete foaming machine with automatic control system according to claim 1, it is characterized in that: described expanding foam solution induction system is comprised of fluid reservoir (2), high-pressure plunger pump (3), fluid flowmeter (4), stop valve (5) and check valve (6), described fluid reservoir (2), high-pressure plunger pump (3), fluid flowmeter (4), stop valve (5) are connected 6 with check valve) connect successively by pipeline, described check valve (6) connects the gas-liquid mixed system.
3. the foam concrete foaming machine with automatic control system according to claim 2, it is characterized in that: described gas delivery system with automatic control system is by air compressor machine (7), stop valve (8), tee ball valve (9), pressure control switch (10), pressure regulator valve (11), gas flowmeter (12) and magnetic valve (13) form, described air compressor machine (7), stop valve (8), tee ball valve (9), pressure regulator valve (11), gas flowmeter (12) is connected 13 with magnetic valve) connect successively by pipeline, described pressure control switch (10) is arranged on pipeline between tee ball valve (9) and control valve (11), described magnetic valve (13) connection gas-liquid mixed system, another road of described tee ball valve (9) connects foamed system.
4. the foam concrete foaming machine with automatic control system according to claim 3, it is characterized in that: described gas-liquid mixed system is by gas-liquid mixed tank (14), porous packing material (15), safety valve (16), Pressure gauge (17), air bleeding valve (18), tapping valve (19) and stop valve (20) form, described porous packing material (15) is arranged in gas-liquid mixed tank (14), described safety valve (16), Pressure gauge (17), air bleeding valve (18), tapping valve (19) is connected 20 with stop valve) be connected with gas-liquid mixed tank (14) respectively by pipeline.
5. the foam concrete foaming machine with automatic control system according to claim 4, it is characterized in that: described foamed system is by check valve (21), foaming cylinder (22), porous packing material (23) and stop valve (24) form, one end of described check valve (21) is connected with the stop valve (20) of gas-liquid mixed system by pipeline, the other end of check valve (21) is connected by the end of pipeline with foaming cylinder (22), the other end of foaming cylinder (22) is connected with stop valve (24) by pipeline, described porous packing material (23) is arranged in foaming cylinder (22).
6. the foam concrete foaming machine with automatic control system according to claim 2, it is characterized in that: the upper end of described fluid reservoir (2) is furnished with funnel (1), the operating pressure of high-pressure plunger pump (3) can reach 2.0MPa, and the range of flow of fluid flowmeter (4) is at 0 ~ 25L/min.
7. the foam concrete foaming machine with automatic control system according to claim 3, it is characterized in that: the pressure limit of described air compressor machine (7) is at 0 ~ 0.8MPa, the adjusting pressure limit of pressure regulator valve (11) is at 0 ~ 0.8MPa, the range of flow of gas flowmeter (12) is at 15 ~ 250L/min, when magnetic valve (13) reached 0.4MPa at the gas pressure of input gas-liquid mixed tank (14), high-pressure plunger pump (3) was just started working.
8. the foam concrete foaming machine with automatic control system according to claim 4, it is characterized in that: the pressure that described gas-liquid mixed tank (14) can bear is 4.0MPa, porous packing material (15) is comprised of one or more in macromolecular fibre, string, steel wire fibre and inorfil, the operating pressure of safety valve (16) is set as 0.5MPa, and the working range of Pressure gauge (17) is 0 ~ 2.5 MPa.
9. the foam concrete foaming machine with automatic control system according to claim 5, it is characterized in that: the material of described foaming cylinder is stainless steel material, and porous packing material (23) is comprised of one or more in macromolecular fibre, string, steel wire fibre and inorfil.
10. according to claim 8 or 9 described foam concrete foaming machines with automatic control system, it is characterized in that: described macromolecular fibre is selected polypropylene fibre or polyster fibre, string is selected flax fiber, steel wire fibre is selected steel wire lump or stainless steel sift net materials, and inorfil is selected glass fibre or rock wool fibers.
CN201310054059.4A 2013-02-20 2013-02-20 Foam concrete foaming machine with automatic control system Expired - Fee Related CN103128852B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310054059.4A CN103128852B (en) 2013-02-20 2013-02-20 Foam concrete foaming machine with automatic control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310054059.4A CN103128852B (en) 2013-02-20 2013-02-20 Foam concrete foaming machine with automatic control system

Publications (2)

Publication Number Publication Date
CN103128852A true CN103128852A (en) 2013-06-05
CN103128852B CN103128852B (en) 2015-04-29

Family

ID=48489623

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310054059.4A Expired - Fee Related CN103128852B (en) 2013-02-20 2013-02-20 Foam concrete foaming machine with automatic control system

Country Status (1)

Country Link
CN (1) CN103128852B (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103302725A (en) * 2013-06-13 2013-09-18 马鞍山十七冶工程科技有限责任公司 Foam concrete foaming machine and foaming method thereof
CN103893938A (en) * 2014-04-16 2014-07-02 中国石油化工股份有限公司 Portable foam extinguisher capable of automatically foaming
CN105751373A (en) * 2016-04-13 2016-07-13 广东省建筑科学研究院集团股份有限公司 Special equipment for cast-in-situ lightweight concrete walls
CN107336361A (en) * 2017-08-25 2017-11-10 上海市地江建筑科技有限公司 The constant pressure and flow foam device of light-weight foamed concrete equipment
CN108585926A (en) * 2018-07-12 2018-09-28 西安建筑科技大学 A kind of preparation method of foam concrete
CN112844085A (en) * 2020-12-29 2021-05-28 南昌轨道交通集团有限公司 Automatic foam generating device and method for soil improvement test
CN113927743A (en) * 2021-10-27 2022-01-14 厦门理工学院 Foam concrete preparation method and system
CN116354742A (en) * 2023-03-27 2023-06-30 东南大学 Cement foaming agent suitable for carbon dioxide foaming and preparation method and device thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008157690A2 (en) * 2007-06-19 2008-12-24 R.S. Solutions, L.L.C. Method and system for calculating and reporting slump in delivery vehicles
CN201427353Y (en) * 2009-04-09 2010-03-24 厦门卓晓油田设备技术开发有限公司 Mechanical air-distribution foaming machine set for aerated foam cement slurries
CN102632552A (en) * 2012-04-28 2012-08-15 广东冠生土木工程技术有限公司 Foamed cement slurry production method and device
CN202592538U (en) * 2012-04-28 2012-12-12 广东冠生土木工程技术有限公司 Foam cement paste production equipment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008157690A2 (en) * 2007-06-19 2008-12-24 R.S. Solutions, L.L.C. Method and system for calculating and reporting slump in delivery vehicles
CN201427353Y (en) * 2009-04-09 2010-03-24 厦门卓晓油田设备技术开发有限公司 Mechanical air-distribution foaming machine set for aerated foam cement slurries
CN102632552A (en) * 2012-04-28 2012-08-15 广东冠生土木工程技术有限公司 Foamed cement slurry production method and device
CN202592538U (en) * 2012-04-28 2012-12-12 广东冠生土木工程技术有限公司 Foam cement paste production equipment

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103302725A (en) * 2013-06-13 2013-09-18 马鞍山十七冶工程科技有限责任公司 Foam concrete foaming machine and foaming method thereof
CN103302725B (en) * 2013-06-13 2015-07-15 马鞍山十七冶工程科技有限责任公司 Foam concrete foaming machine and foaming method thereof
CN103893938A (en) * 2014-04-16 2014-07-02 中国石油化工股份有限公司 Portable foam extinguisher capable of automatically foaming
CN103893938B (en) * 2014-04-16 2018-05-25 中国石油化工股份有限公司 The portable foam extinguisher voluntarily to foam
CN105751373A (en) * 2016-04-13 2016-07-13 广东省建筑科学研究院集团股份有限公司 Special equipment for cast-in-situ lightweight concrete walls
CN107336361A (en) * 2017-08-25 2017-11-10 上海市地江建筑科技有限公司 The constant pressure and flow foam device of light-weight foamed concrete equipment
CN108585926A (en) * 2018-07-12 2018-09-28 西安建筑科技大学 A kind of preparation method of foam concrete
CN112844085A (en) * 2020-12-29 2021-05-28 南昌轨道交通集团有限公司 Automatic foam generating device and method for soil improvement test
CN113927743A (en) * 2021-10-27 2022-01-14 厦门理工学院 Foam concrete preparation method and system
CN116354742A (en) * 2023-03-27 2023-06-30 东南大学 Cement foaming agent suitable for carbon dioxide foaming and preparation method and device thereof

Also Published As

Publication number Publication date
CN103128852B (en) 2015-04-29

Similar Documents

Publication Publication Date Title
CN103128852B (en) Foam concrete foaming machine with automatic control system
CN203971841U (en) A kind of of the fracturing fluid mixing system
CN201464456U (en) High-pressure crack grouting simulation test bed
CN102758604B (en) Swelling technology for carrying out fracturing construction on fiber
CN106351446A (en) Foaming and pumping system for physical foaming foam concrete
CN105751373A (en) Special equipment for cast-in-situ lightweight concrete walls
CN105927248A (en) Pressure stabilizing and gas exhausting device used for grouting site and mounting and using method thereof
CN103758043A (en) Intelligent vacuum circulating grouting system
CN201568057U (en) Foam generating device for shield
CN204826665U (en) Physical blowing foam concrete pumping system that foams
CN203842554U (en) Automatic addition device for liquid additives in oilfield
CN103418259A (en) Concentrated solution dilution method
CN206937630U (en) A kind of online foam device of gypsum board manufacture
CN102619722B (en) Hydraulic dual-fluid grouting pump
CN203684110U (en) Intelligent vacuum circulation slurry pressing system
CN203904239U (en) Conveying device for material mixing in emulsion explosive production
CN206661158U (en) A kind of polycarboxylate water-reducer atomization titration reaction unit
CN204107703U (en) A kind of pneumatic spray gun
CN203130098U (en) Measuring system for grouting reinforcement process
CN205047227U (en) Laboratory is with foaming device
CN203697256U (en) Double-foaming foam concrete equipment
CN103711316A (en) Control method of intelligent pulping and grouting system
CN103878881B (en) Two frothing foam concrete equipment
CN203077468U (en) Automatic control foaming device
CN204195982U (en) The foam maker of foam concrete

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C53 Correction of patent of invention or patent application
CB02 Change of applicant information

Address after: 510050 No. 121 martyrs East Road, Guangzhou, Guangdong, Tianhe District

Applicant after: Guangdong Construction Academy Group Plc

Applicant after: South China University of Technology

Address before: 510050 No. 121 martyrs East Road, Guangdong, Guangzhou

Applicant before: Guangdong Prov. Inst. of Building Science

Applicant before: South China University of Technology

COR Change of bibliographic data

Free format text: CORRECT: APPLICANT; FROM: GUANGDONG PROV. INST. OF BUILDING SCIENCE TO: GUANGDONG ARCHITECTURAL SCIENTIFIC RESEARCH INSTITUTE GROUP CO., LTD.

C14 Grant of patent or utility model
GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20200529

Address after: 510000 Tianhe District, Guangdong, No. five road, No. 381,

Patentee after: SOUTH CHINA University OF TECHNOLOGY

Address before: 510050 No. 121 martyrs East Road, Guangzhou, Guangdong, Tianhe District

Co-patentee before: SOUTH CHINA University OF TECHNOLOGY

Patentee before: GUANGDONG PROVINCIAL ACADEMY OF BUILDING RESEARCH GROUP Co.,Ltd.

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150429

Termination date: 20210220

CF01 Termination of patent right due to non-payment of annual fee