CN108825943A - Mounting bracket is used in a kind of detection of chemical engineering sewage heavy metal ion content - Google Patents

Mounting bracket is used in a kind of detection of chemical engineering sewage heavy metal ion content Download PDF

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Publication number
CN108825943A
CN108825943A CN201810646839.0A CN201810646839A CN108825943A CN 108825943 A CN108825943 A CN 108825943A CN 201810646839 A CN201810646839 A CN 201810646839A CN 108825943 A CN108825943 A CN 108825943A
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CN
China
Prior art keywords
heavy metal
chemical engineering
metal ion
bolted
engineering sewage
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Pending
Application number
CN201810646839.0A
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Chinese (zh)
Inventor
杨敏敏
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Individual
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Individual
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Priority to CN201810646839.0A priority Critical patent/CN108825943A/en
Publication of CN108825943A publication Critical patent/CN108825943A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16MFRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02Heads
    • F16M11/04Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/043Allowing translations
    • F16M11/045Allowing translations adapted to left-right translation movement
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/70Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/30Driving arrangements; Transmissions; Couplings; Brakes
    • B01F35/32Driving arrangements
    • B01F35/32005Type of drive
    • B01F35/32015Flow driven
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16MFRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02Heads
    • F16M11/04Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/043Allowing translations
    • F16M11/046Allowing translations adapted to upward-downward translation movement
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16MFRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02Heads
    • F16M11/04Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/06Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
    • F16M11/08Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting around a vertical axis, e.g. panoramic heads
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16MFRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02Heads
    • F16M11/18Heads with mechanism for moving the apparatus relatively to the stand
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16MFRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/20Undercarriages with or without wheels
    • F16M11/24Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
    • F16M11/26Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other by telescoping, with or without folding
    • F16M11/28Undercarriages for supports with one single telescoping pillar
    • F16M11/30Undercarriages for supports with one single telescoping pillar with co-moving side-struts
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/18Water
    • G01N33/1813Specific cations in water, e.g. heavy metals

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

The invention discloses a kind of chemical engineering sewage heavy metal ion content detection mounting brackets, including horizontally disposed support rod, motorized rails have been bolted at the top of the support rod, and electronic sliding block is installed at the top of motorized rails, the top of the electronic sliding block is connected with horizontally disposed first stepper motor by setting, and shell has been bolted in the output shaft end of the first stepper motor.The present invention can use thread lead screw and installing pipe be immersed in chemical engineering sewage, installing pipe is adjusted to go up and down in chemical engineering sewage, it can detecte heavy metal ion content in the chemical engineering sewage of different height, in electronic sliding block motion process, second stepper motor can drive installing pipe to rotate simultaneously, the drainage flow around detection of heavy metal ion sensor can be stirred using flowing motor, heavy metal ion content data in available accurate chemical engineering sewage provide comprehensively and accurate detection data for the judgement of staff.

Description

Mounting bracket is used in a kind of detection of chemical engineering sewage heavy metal ion content
Technical field
The present invention relates to chemical engineering sewage detection technique fields more particularly to a kind of chemical engineering sewage heavy metal ion content to detect Use mounting bracket.
Background technique
Pure water is changing original physical property or chemical property after using, and becomes containing variety classes The waste water of impurity.Chemical engineering sewage be exactly the technique waste water given off in Chemical Manufacture, cooling water, exhaust gas washing water, equipment and The waste water such as place flushing water.If these waste water are discharged without processing, will cause water body heterogeneity and in various degree Pollution influence the production of industrial or agricultural to endanger the health of the mankind, heavy metal refer mainly to mercury (Hg), cadmium (Cd), lead (Pb), The heavy metals such as chromium (Cr), arsenic (As), copper (Cu), zinc (Zn), cobalt (Co), nickel (Ni), they are present in environment in the form of different Among, and migrate, accumulate in the environment, contain heavy metal ion, excess of the heavy metal in food chain in many chemical engineering sewages Enrichment can cause very big harm to natural environment and human health.
Currently, being used in detection of heavy metal ion sensor moment detection sewage in many chemical engineering sewage treatment processes Heavy metal ion content, still, the detection position of these detection of heavy metal ion sensors is constant, and heavy metal ion is caused to contain Testing result inaccuracy is measured, the judgement of staff is influenced.
Summary of the invention
The purpose of the present invention is to solve disadvantages existing in the prior art, and a kind of chemical engineering sewage heavy metal proposed Mounting bracket is used in ion concentration detection.
To achieve the goals above, present invention employs following technical solutions:
A kind of detection of chemical engineering sewage heavy metal ion content mounting bracket, including horizontally disposed support rod, the support rod Top motorized rails have been bolted, and electronic sliding block is installed at the top of motorized rails, the top of the electronic sliding block Portion is connected with horizontally disposed first stepper motor by setting, and the output shaft end of the first stepper motor is bolted There is shell, pedestal has been bolted in the bottom of the shell, and the top two sides of the pedestal offer the first circle respectively Through-hole and the second circular through hole, and the inside of the first circular through hole is plugged with the thread lead screw being vertically arranged, the second circular through hole Inside be plugged with the gag lever post being vertically arranged, the same peace has been bolted in the bottom end of the thread lead screw and gag lever post Loading board, the top of the pedestal is located at the first circular through hole position and casing has been bolted, and the inner tip of casing is logical It crosses bearing and is connected with ball nut, the ball nut is threadedly coupled with thread lead screw, offers circle at the top of the mounting plate Shape through slot, and second stepper motor, the output shaft bottom of the second stepper motor has been bolted in the inside of round through slot Horizontally disposed installing pipe has been bolted in end, and heavy metal ion inspection has been bolted in the center of inside of installing pipe Survey sensor.
Preferably, support base has been bolted in the both ends of the support rod, and two support bases pass through spiral shell respectively Bolt is installed on the two sides in chemical engineering sewage pond.
Preferably, driving motor has been bolted in the center of top of the pedestal, and the output shaft of driving motor is logical It crosses and has been bolted driving gear.
Preferably, driven gear, and driven gear and driving gear are socketed at the top of the outer circumferential walls of the ball nut Between be intermeshed.
Preferably, the both ends of the installing pipe are threaded with grid web plate, and inside one end of installing pipe passes through spiral shell It tethers and is connected to flowing motor, flow impellers have been bolted in the output shaft for flowing motor.
Preferably, the top of the thread lead screw and gag lever post all extends to the top of shell, and thread lead screw and limit Restraining position ring block is bolted in the top of bar.
Preferably, the electronic sliding block, the first stepper motor, flowing motor, second stepper motor and driving motor pass through Switch is connected with controller, and controller and switch are connect by bolt with support rod.
Beneficial effects of the present invention are:
1. chemical engineering sewage heavy metal ion content detection mounting bracket proposed by the present invention, by detection of heavy metal ion sensor It is mounted on the inside of installing pipe, is rotated using driving motor, thread lead screw is can use and installing pipe is immersed in chemical engineering sewage, It adjusts installing pipe to go up and down in chemical engineering sewage, can detecte heavy metal ion content in the chemical engineering sewage of different height.
2. chemical engineering sewage heavy metal ion content detection mounting bracket proposed by the present invention, controller control electronic sliding block Work in electronic sliding block motion process, can drive installing pipe in chemical engineering sewage transverse movement, while second stepper motor can be with Installing pipe rotation is driven, the drainage flow around detection of heavy metal ion sensor can be stirred using flowing motor, so that weight Metal ion detection sensor can detecte the sewage of each position in chemical engineering sewage pond, in available accurate chemical engineering sewage Heavy metal ion content data, for staff judgement provide comprehensively and accurate detection data.
3. chemical engineering sewage heavy metal ion content detection mounting bracket proposed by the present invention, after detection, driving electricity Machine rotation can use thread lead screw for installing pipe and be lifted away from chemical engineering sewage, and the work of the first stepper motor can rotate installing pipe To top, when facilitating staff to safeguard detection of heavy metal ion sensor, while avoiding detection of heavy metal ion sensor long Between be immersed in chemical engineering sewage and be damaged, improve the service life of detection of heavy metal ion sensor.
Detailed description of the invention
Fig. 1 is the structural representation that mounting bracket is used in a kind of chemical engineering sewage heavy metal ion content detection proposed by the present invention Figure;
Fig. 2 is that a kind of plan structure of chemical engineering sewage heavy metal ion content detection mounting bracket proposed by the present invention is illustrated Figure;
Fig. 3 is that a kind of partial side structure of chemical engineering sewage heavy metal ion content detection mounting bracket proposed by the present invention is shown It is intended to.
In figure:1 support base, 2 support rods, 3 motorized rails, 4 pedestals, 5 shells, 6 thread lead screws, 7 stop collars, 8 gag lever posts, 9 ball nuts, 10 driven gears, 11 driving gears, 12 driving motors, 13 casings, 14 mounting plates, 15 detection of heavy metal ion pass Sensor, 16 second stepper motors, 17 flowing motors, 18 installing pipes, 19 grid web plates, 20 first stepper motors, 21 electronic sliding blocks.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Referring to Fig.1-3, a kind of detection of chemical engineering sewage heavy metal ion content mounting bracket, including horizontally disposed support Bar 2, motorized rails 3 have been bolted in the top of support rod 2, and the top of motorized rails 3 is equipped with electronic sliding block 21, control Device processed controls electronic sliding block 21 and works, and in electronic 21 motion process of sliding block, installing pipe 18 can be driven laterally to transport in chemical engineering sewage Dynamic, the top of electronic sliding block 21 is connected with horizontally disposed first stepper motor 20 by setting, and the first stepper motor 20 Shell 5 has been bolted in output shaft end, and pedestal 4, the top two sides of pedestal 4 have been bolted in the bottom of shell 5 The first circular through hole and the second circular through hole are offered respectively, and the inside of the first circular through hole is plugged with the screw thread being vertically arranged Lead screw 6, the inside of the second circular through hole are plugged with the gag lever post 8 being vertically arranged, and the bottom end of thread lead screw 6 and gag lever post 8 passes through It has been bolted the same mounting plate 14, the top of pedestal 4 is located at the first circular through hole position and casing 13 has been bolted, And the inner tip of casing 13 is connected with ball nut 9 by bearing, ball nut 9 is threadedly coupled with thread lead screw 6, mounting plate 14 top offers round through slot, and second stepper motor 16, the second stepping has been bolted in the inside of round through slot Horizontally disposed installing pipe 18 has been bolted in the output shaft bottom end of motor 16, and the center of inside of installing pipe 18 passes through spiral shell It tethers and is connected to detection of heavy metal ion sensor 15, second stepper motor 16 can drive.
In the present invention, support base 1 has been bolted in the both ends of support rod 2, and two support bases 1 pass through spiral shell respectively Bolt is installed on the two sides in chemical engineering sewage pond, and driving motor 12, and driving motor 12 has been bolted in the center of top of pedestal 4 Output shaft be bolted driving gear 11, be socketed with driven gear 10 at the top of the outer circumferential walls of ball nut 9, and from It is intermeshed between moving gear 10 and driving gear 11, the both ends of installing pipe 18 are threaded with grid web plate 19, and install Flowing motor 17 has been bolted in inside one end of pipe 18, and flowing leaf has been bolted in the output shaft of flowing motor 17 The top of wheel, thread lead screw 6 and gag lever post 8 all extends to the top of shell 5, and the top of thread lead screw 6 and gag lever post 8 is logical It crosses and is bolted restraining position ring block 7, electronic sliding block 21, the first stepper motor 20, flowing motor 17, second stepper motor 16 and driving Motor 12 is connected with controller by switch, and controller and switch are connect by bolt with support rod 2.
Working principle:Detection of heavy metal ion sensor 15 is mounted on to the inside of installing pipe 18, utilizes driving motor 12 Rotation, can use thread lead screw 6 and installing pipe 18 is immersed in chemical engineering sewage, adjusts installing pipe 18 and rises in chemical engineering sewage Drop, controller control electronic sliding block 21 and work, and in electronic 21 motion process of sliding block, installing pipe 18 can be driven in chemical engineering sewage cross To movement, while second stepper motor 16 can drive installing pipe 18 to rotate, using flowing motor 17 can stir heavy metal from Drainage flow around sub- detection sensor 15, so that detection of heavy metal ion sensor 15 can detecte in chemical engineering sewage pond respectively The sewage of a position, the heavy metal ion content data in available accurate chemical engineering sewage mention for the judgement of staff The accurate detection data for comprehensive, after detection, driving motor 12 rotates, and can use thread lead screw 6 for installing pipe 18 It is lifted away from chemical engineering sewage, installing pipe 18 can be turned to top, staff is facilitated to safeguard a huge sum of money by the work of the first stepper motor 20 Belong to ion detection sensor 15, while avoiding 15 long-time of detection of heavy metal ion sensor from being immersed in chemical engineering sewage and being damaged It is bad, improve the service life of detection of heavy metal ion sensor 15.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.

Claims (7)

1. a kind of detection of chemical engineering sewage heavy metal ion content mounting bracket, including horizontally disposed support rod(2), feature It is, the support rod(2)Top motorized rails have been bolted(3), and motorized rails(3)Top electricity is installed Movable slider(21), the electronic sliding block(21)Top be connected with horizontally disposed first stepper motor by setting(20), and First stepper motor(20)Output shaft end shell has been bolted(5), the shell(5)Bottom pass through bolt connect It is connected to pedestal(4), the pedestal(4)Top two sides offer the first circular through hole and the second circular through hole, and first respectively The inside of circular through hole is plugged with the thread lead screw being vertically arranged(6), the inside of the second circular through hole, which is plugged with, to be vertically arranged Gag lever post(8), the thread lead screw(6)And gag lever post(8)Bottom end the same mounting plate has been bolted(14), described Pedestal(4)Top be located at the first circular through hole position casing be bolted(13), and casing(13)Inner tip Ball nut is connected with by bearing(9), the ball nut(9)With thread lead screw(6)It is threadedly coupled, the mounting plate(14) Top offer round through slot, and second stepper motor has been bolted in the inside of round through slot(16), described second Stepper motor(16)Output shaft bottom end horizontally disposed installing pipe has been bolted(18), and installing pipe(18)Inside Detection of heavy metal ion sensor has been bolted in center(15).
2. a kind of chemical engineering sewage heavy metal ion content detection mounting bracket according to claim 1, which is characterized in that The support rod(2)Both ends support base has been bolted(1), and two support bases(1)It is installed respectively by bolt In the two sides in chemical engineering sewage pond.
3. a kind of chemical engineering sewage heavy metal ion content detection mounting bracket according to claim 1, which is characterized in that The pedestal(4)Center of top driving motor has been bolted(12), and driving motor(12)Output shaft pass through spiral shell It tethers and is connected to driving gear(11).
4. a kind of chemical engineering sewage heavy metal ion content detection mounting bracket according to claim 1, which is characterized in that The ball nut(9)Outer circumferential walls at the top of be socketed with driven gear(10), and driven gear(10)With driving gear(11) Between be intermeshed.
5. a kind of chemical engineering sewage heavy metal ion content detection mounting bracket according to claim 1, which is characterized in that The installing pipe(18)Both ends be threaded with grid web plate(19), and installing pipe(18)Inside one end pass through bolt connect It is connected to flowing motor(17), flow motor(17)Output shaft flow impellers have been bolted.
6. a kind of chemical engineering sewage heavy metal ion content detection mounting bracket according to claim 1, which is characterized in that The thread lead screw(6)And gag lever post(8)Top all extend to shell(5)Top, and thread lead screw(6)And gag lever post (8)Top restraining position ring block is bolted(7).
7. a kind of chemical engineering sewage heavy metal ion content detection mounting bracket according to claim 1, which is characterized in that The electronic sliding block(21), the first stepper motor(20), flowing motor(17), second stepper motor(16)And driving motor(12) It is connected with controller by switch, and controller and switch pass through bolt and support rod(2)Connection.
CN201810646839.0A 2018-06-21 2018-06-21 Mounting bracket is used in a kind of detection of chemical engineering sewage heavy metal ion content Pending CN108825943A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810646839.0A CN108825943A (en) 2018-06-21 2018-06-21 Mounting bracket is used in a kind of detection of chemical engineering sewage heavy metal ion content

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810646839.0A CN108825943A (en) 2018-06-21 2018-06-21 Mounting bracket is used in a kind of detection of chemical engineering sewage heavy metal ion content

Publications (1)

Publication Number Publication Date
CN108825943A true CN108825943A (en) 2018-11-16

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Cited By (6)

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CN109633116A (en) * 2019-01-10 2019-04-16 浙江鑫广环保科技有限公司 A kind of river water process water monitoring device
CN112082048A (en) * 2020-07-23 2020-12-15 蒋锐 Intelligence water affairs information-based management platform is with observing operating means
CN112178374A (en) * 2020-09-14 2021-01-05 安徽朗坤物联网有限公司 Liquid manure integrated device with growth monitored control system
CN112748228A (en) * 2020-12-12 2021-05-04 深圳市星源空间环境技术有限公司 Check out test set for sewage treatment
CN113125508A (en) * 2021-04-14 2021-07-16 长沙卡琳顿科技有限公司 Intelligent transmission device of heavy metal detector
CN113405006A (en) * 2021-06-07 2021-09-17 王鲁生 Ergonomic computer with multi-angle adjusting and lifting support

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CN108006414A (en) * 2017-12-27 2018-05-08 张志海 A kind of Multifunctional projection equipment for being used to impart knowledge to students
CN208331607U (en) * 2018-06-21 2019-01-04 杨敏敏 Mounting bracket is used in a kind of detection of chemical engineering sewage heavy metal ion content

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CN112082048A (en) * 2020-07-23 2020-12-15 蒋锐 Intelligence water affairs information-based management platform is with observing operating means
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CN112748228A (en) * 2020-12-12 2021-05-04 深圳市星源空间环境技术有限公司 Check out test set for sewage treatment
CN113125508A (en) * 2021-04-14 2021-07-16 长沙卡琳顿科技有限公司 Intelligent transmission device of heavy metal detector
CN113405006A (en) * 2021-06-07 2021-09-17 王鲁生 Ergonomic computer with multi-angle adjusting and lifting support

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