CN105381747B - A kind of agitator for sewage disposal - Google Patents
A kind of agitator for sewage disposal Download PDFInfo
- Publication number
- CN105381747B CN105381747B CN201510795688.1A CN201510795688A CN105381747B CN 105381747 B CN105381747 B CN 105381747B CN 201510795688 A CN201510795688 A CN 201510795688A CN 105381747 B CN105381747 B CN 105381747B
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- Prior art keywords
- drive mechanism
- agitator
- slide rail
- disk
- sewage disposal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/07—Stirrers characterised by their mounting on the shaft
- B01F27/071—Fixing of the stirrer to the shaft
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/07—Stirrers characterised by their mounting on the shaft
- B01F27/074—Stirrers characterised by their mounting on the shaft having two or more mixing elements being concentrically mounted on the same shaft
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/114—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/115—Stirrers characterised by the configuration of the stirrers comprising discs or disc-like elements essentially perpendicular to the stirrer shaft axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/115—Stirrers characterised by the configuration of the stirrers comprising discs or disc-like elements essentially perpendicular to the stirrer shaft axis
- B01F27/1151—Stirrers characterised by the configuration of the stirrers comprising discs or disc-like elements essentially perpendicular to the stirrer shaft axis with holes on the surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
- B01F27/192—Stirrers with two or more mixing elements mounted in sequence on the same axis with dissimilar elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/805—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis wherein the stirrers or the receptacles are moved in order to bring them into operative position; Means for fixing the receptacle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/92—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws
- B01F27/922—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with helices or screws with two or more helices, e.g. with intermeshing helices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/93—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with rotary discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/305—Treatment of water, waste water or sewage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/21—Measuring
- B01F35/2132—Concentration, pH, pOH, p(ION) or oxygen-demand
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The present invention proposes a kind of agitator for sewage disposal, including service bridge, the first drive mechanism, walking mechanism, slide rail, the second drive mechanism, agitating device and the 3rd drive mechanism；Service bridge is across on cesspool, first drive mechanism drives service bridge along cesspool central axis, service bridge is provided with slide rail, slide rail extends along service bridge bearing of trend, slide rail two ends are equipped with travel switch, and walking mechanism is slidably mounted on slide rail, and the second drive mechanism drives walking mechanism motion, agitating device is rotated with walking mechanism and is connected, and is driven by the 3rd drive mechanism；Agitating device includes rotary shaft, is sequentially provided with the first lifting assembly, the first mixing component, the second lifting assembly, the second mixing component in rotary shaft from top to bottom.Present invention stirring scope is wide, and stirring is abundant, and stirring intensity is high, efficiency high.
Description
Technical field
The present invention relates to technical field of sewage treatment equipment, more particularly to a kind of agitator for sewage disposal.
Background technology
Cesspool agitator is a kind of important Sewage treatment mixer tool, it is adaptable to city and rural sewage treatment
Factory, it is installed and use quality has a very big impact to sewage disposal operation, and existing cesspool agitator is generally single leaf
An impeller is installed on the wheel submersible motor of mixer, i.e., the number of blade is generally two or three, and mixing effect is not special
It is preferable.
The content of the invention
Based on the technical problem that background technology is present, the present invention proposes a kind of agitator for sewage disposal.
A kind of agitator for sewage disposal proposed by the present invention, including service bridge, the first drive mechanism, vehicle with walking machine
Structure, slide rail, the second drive mechanism, agitating device and the 3rd drive mechanism；
Service bridge is across on cesspool, and the first drive mechanism drives service bridge along cesspool central axis, service bridge
Slide rail is provided with, slide rail extends along service bridge bearing of trend, and slide rail two ends are equipped with travel switch, and walking mechanism is slidably mounted on
On slide rail, the second drive mechanism drives walking mechanism motion, and agitating device is rotated with walking mechanism and is connected, and agitating device is by the 3rd
Drive mechanism drives rotation；
Agitating device include rotary shaft, be sequentially provided with from top to bottom in rotary shaft the first lifting assembly, the first mixing component,
Second lifting assembly, the second mixing component；
First lifting assembly includes the first helical blade；
First mixing component includes support, the hollow first tubaeform disk and multiple first paddles, and first is tubaeform
The bus of disk is hyperbola, and the first tubaeform disk upper end is connected by support with rotary shaft, and multiple first paddles are along the
One tubaeform disk is radially set, and the first paddle extends to its lower edge, and its by the first tubaeform disk upper edge
Extension line is helix, and the first tubaeform disk is provided with some through holes；
Second lifting assembly includes the second helical blade；
Second mixing component includes wheel hub, the second tubaeform disk and multiple second paddles, the second tubaeform disk
Upper end be connected with wheel hub, the bus of the second tubaeform disk is hyperbola, and second paddle one end is connected with wheel hub, the other end
The lower edge of the second tubaeform disk is extended to, and its extension line is helix.
Preferably, external diameter of the external diameter of the second helical blade more than the first helical blade.
Preferably, support includes a retainer plate, and suit is fixed in rotary shaft, is uniformly arranged along its circumference on retainer plate
3-4 support bar, support bar is radially extended along retainer plate, end and first tubaeform disk inwall of the support bar away from retainer plate
It is fixedly connected.
Preferably, the 3rd drive mechanism includes the first reductor and the first motor, and the first motor is connected with the first reductor,
First speed reducer output shaft is connected with rotary shaft.
Preferably, the first tubaeform disk, the first paddle, the second tubaeform disk and the second paddle are using enhancing
Fiber glass fiber reinforced plastic is made.
Preferably, the first tubaeform disk and the first paddle are made of integral molding techniques, the second tubaeform disk
It is made of integral molding techniques with the second paddle.
Preferably, including controller and multiple single substance concentration detectors, controller respectively with the first drive mechanism, the
Two drive mechanisms are connected, and multiple single substance concentration detectors are axially sequentially arranged in rotary shaft along rotary shaft.
Preferably, multiple single substance concentration detector intervals are uniform.
A kind of agitator for sewage disposal provided in the present invention, can be with service bridge along cesspool center by setting
Rotate, can be moved slide rail along service bridge, can be in the agitating device being rotated by of the 3rd drive mechanism, in three kinds of motions
Under effect, agitator can be stirred to sewage in whole cesspool；By setting travel switch, realize agitating device in slide rail
Upper automatic back-and-forth movement；By setting the first lifting assembly, the first mixing component, the second lifting assembly, the second mixing component, carry
Effluent cycle water velocity high and intensity, so as to improve mixing effect；By setting controller and single substance concentration detector,
Sewage situation uneven up and down in somewhere in cesspool can be directed to be operated, to being sufficiently stirred at this.
Present invention stirring scope is wide, and stirring is abundant, and stirring intensity is high, efficiency high.
Brief description of the drawings
Fig. 1 is a kind of structural representation of agitator for sewage disposal proposed by the present invention.
Fig. 2 is a kind of agitator medium-height trestle structural representation for sewage disposal proposed by the present invention.
Specific embodiment
As shown in Figure 1 and Figure 2, Fig. 1 is a kind of structural representation of agitator for sewage disposal proposed by the present invention；
Fig. 2 is a kind of agitator medium-height trestle structural representation for sewage disposal proposed by the present invention.
Reference picture 1, Fig. 2, a kind of agitator for sewage disposal proposed by the present invention, including service bridge 1, first drive
Mechanism 2, walking mechanism 3, slide rail 4, the second drive mechanism 5, agitating device and the 3rd drive mechanism 7；
Service bridge 1 is across on cesspool, and the first drive mechanism 2 drives service bridge 1 along cesspool central axis, work
The specific mounting means of bridge 1 and cesspool, the two ends that may be designed to service bridge 1 are installed on what cesspool top was set by roller
In track.
Service bridge 1 is provided with slide rail 4, and slide rail 4 extends along the bearing of trend of service bridge 1, and the two ends of slide rail 4 are equipped with stroke and open
Close, walking mechanism 3 is slidably mounted on slide rail 4, and walking mechanism 3 moves to the end of slide rail 4, touches the travel switch at the end,
Triggering the trip switch motion, walking mechanism 3 is moved round about, and the second drive mechanism 5 drives walking mechanism 3 to move, and stirs
Mix device to be connected with the rotation of walking mechanism 3, under the driving of the 3rd drive mechanism 7, agitating device rotation carries out Beater operator work, stirs
Device not only carries out the Stirring work of itself, can also be moved along slide rail 4 under the drive of walking mechanism 3, meanwhile, also
In can participating in the rotation work of service bridge 1, so as to be rotated along cesspool central shaft, so that agitating device can be scanned in cesspool
Whole region.
Agitating device includes rotary shaft 8, is sequentially provided with the first lifting assembly 9, the first stirring group in rotary shaft 8 from top to bottom
Part 10, the second lifting assembly 11 and the second mixing component 12；
First lifting assembly 9 includes the first helical blade 13, is mainly used in stirring-up sewage up and down motion.
First mixing component 10 includes support 14, the hollow first tubaeform disk 15 and multiple first paddles 16, the
The bus of one tubaeform disk 15 is hyperbola, and the upper end of the first tubaeform disk 15 is connected by support 14 with rotary shaft 8, multiple
First paddle 16 is radially set along the first tubaeform disk 15, and the first paddle 16 is by the top of the first tubaeform disk 15
Along its lower edge, and its extension line is extended to for helix, the first tubaeform disk 15 is provided with some through holes, in the first stirring
In the presence of component 10, sewage does upper and lower circulation movement near the first mixing component 10, the design of support 14 and through hole accelerates,
Strengthen this upper and lower circulation movement.
In present embodiment, support 14 includes a retainer plate 21, and suit is fixed in rotary shaft 8, edge on retainer plate 21
Its circumference is uniformly arranged 3-4 support bar 22, and support bar 22 is radially extended along retainer plate 21, and support bar 22 is away from retainer plate 21
End is fixedly connected with the inwall of the first tubaeform disk 15, and support more firmly, also makes circulating water flow be more easy to pass through.
Second lifting assembly includes the second helical blade 17, is mainly used in stirring-up sewage up and down motion.
Second mixing component 12 includes wheel hub 18, the second tubaeform disk 19 and multiple second paddles 20, the second loudspeaker
The upper end of shape disk 19 is connected with wheel hub 18, and the bus of the second tubaeform disk 19 is hyperbola, the one end of the second paddle 20
It is connected with wheel hub 18, the other end extends to the lower edge of the second tubaeform disk 19, and its extension line is helix, mixing effect
Good, intensity is high.
In the presence of the first mixing component 10 and the second mixing component 12, it is considered to which it is to the first helical blade 13 and second
The work influence of helical blade 17, in order to strengthen lifting effect, the external diameter for setting the second helical blade 17 is more than the first helical-blade
The external diameter of piece 13,.
In present embodiment, the 3rd drive mechanism 7 includes the first motor 23 and the first reductor 24, the first motor 23 and the
One reductor 24 is connected, and the output shaft of the first reductor 24 is connected with rotary shaft 8, there is provided larger torque, improves operating efficiency.
The first tubaeform disk 15, the first paddle 16 in present embodiment, the second tubaeform disk 19 and second are stirred
Mix leaf 20 to be made of reinforcing fiber fiberglass, not only intensity is high, and under density, can fully mitigate the negative of rotary shaft 8
Load.In order to strengthen the intensity of agitating device, the first tubaeform disk 15 and the first paddle 16 are made of integral molding techniques,
Second tubaeform disk 19 and the second paddle 20 are made of integral molding techniques.
In present embodiment, including controller 25 and multiple single substance concentration detectors 26, controller 25 is respectively with the
One drive mechanism 2, the second drive mechanism 5 are connected, and multiple single substance concentration detectors 26 are in rotary shaft 8, and edge rotates
Axle 8 is axially sequentially arranged, and interval is uniform, and multiple single substance concentration detectors 26 detect the concentration of a certain predetermined substance, control
Device processed 25 obtains concentration information by it, and calculates the maximum difference between these numerical value, if the difference is preset more than in controller
Predetermined value, controller 25 controls the first drive mechanism 2 and the second drive mechanism 5 to be stopped, agitating device is parked in detection
Place's work.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, technology according to the present invention scheme and its
Inventive concept is subject to equivalent or change, should all be included within the scope of the present invention.
Claims (8)
1. a kind of agitator for sewage disposal, it is characterised in that including service bridge (1), the first drive mechanism (2), walking
Mechanism (3), slide rail (4), the second drive mechanism (5), agitating device and the 3rd drive mechanism (7)；
Service bridge (1) is across on cesspool, and the first drive mechanism (2) drives service bridge (1) along cesspool central axis, work
Make bridge (1) and be provided with slide rail (4), slide rail (4) extends along service bridge (1) bearing of trend, and slide rail (4) two ends are equipped with stroke and open
Close, walking mechanism (3) is slidably mounted on slide rail (4), the second drive mechanism (5) drives walking mechanism (3) motion, agitating device
Rotated with walking mechanism (3) and be connected, agitating device is driven by the 3rd drive mechanism (7) and rotated；
Agitating device includes rotary shaft (8), is sequentially provided with the first lifting assembly (9), the first stirring in rotary shaft (8) from top to bottom
Component (10), the second lifting assembly (11) and the second mixing component (12)；
First lifting assembly (9) includes the first helical blade (13)；
First mixing component (10) includes support (14), the hollow first tubaeform disk (15) and multiple first paddles
(16), the bus of the first tubaeform disk (15) is hyperbola, and the first tubaeform disk (15) upper end is by support (14) and turns
Moving axis (8) is connected, and multiple first paddles (16) are radially set along the first tubaeform disk (15), the first paddle (16)
Its lower edge is extended to by the first tubaeform disk (15) upper edge, and the first paddle (16) extension line is helix, first
Tubaeform disk (15) is provided with some through holes；
Second lifting assembly includes the second helical blade (17)；
Second mixing component (12) includes wheel hub (18), the second tubaeform disk (19) and multiple second paddles (20), second
The upper end of tubaeform disk (19) is connected with wheel hub (18), and the bus of the second tubaeform disk (19) is hyperbola, the second stirring
Leaf (20) one end is connected with wheel hub (18), and the other end extends to the lower edge of the second tubaeform disk (19), and the second paddle
(20) extension line is helix.
2. the agitator for sewage disposal according to claim 1, it is characterised in that the second helical blade (17) it is outer
External diameter of the footpath more than the first helical blade (13).
3. the agitator for sewage disposal according to claim 1, it is characterised in that support (14) includes a fixation
Circle (21), retainer plate (21) suit is fixed in rotary shaft (8), and 3-4 support is uniformly arranged along its circumference on retainer plate (21)
Bar (22), support bar (22) is radially extended along retainer plate (21), end and first loudspeaker of the support bar (22) away from retainer plate (21)
Shape disk (15) inwall is fixedly connected.
4. the agitator for sewage disposal according to claim 1, it is characterised in that the 3rd drive mechanism (7) includes
First motor (23) and the first reductor (24), the first motor (23) are connected with the first reductor (24), the first reductor (24)
Output shaft is connected with rotary shaft (8).
5. the agitator for sewage disposal according to claim 1, it is characterised in that the first tubaeform disk (15),
First paddle (16), the second tubaeform disk (19) and the second paddle (20) are made of reinforcing fiber fiberglass.
6. the agitator for sewage disposal according to claim 5, it is characterised in that the first tubaeform disk (15) and
First paddle (16) is made of integral molding techniques, and the second tubaeform disk (19) and the second paddle (20) are using one
Forming technique is made.
7. the agitator for sewage disposal according to claim 1, it is characterised in that including controller (25) and multiple
Single substance concentration detector (26), controller (25) is connected with the first drive mechanism (2), the second drive mechanism (5) respectively, many
Individual single substance concentration detector (26) is axially sequentially arranged in rotary shaft (8) and along rotary shaft (8).
8. the agitator for sewage disposal according to claim 7, it is characterised in that multiple single substance Concentration Testings
Device (26) interval is uniform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510795688.1A CN105381747B (en) | 2015-11-18 | 2015-11-18 | A kind of agitator for sewage disposal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510795688.1A CN105381747B (en) | 2015-11-18 | 2015-11-18 | A kind of agitator for sewage disposal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105381747A CN105381747A (en) | 2016-03-09 |
| CN105381747B true CN105381747B (en) | 2017-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510795688.1A Active CN105381747B (en) | 2015-11-18 | 2015-11-18 | A kind of agitator for sewage disposal |
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| CN (1) | CN105381747B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106732154A (en) * | 2016-11-11 | 2017-05-31 | 江苏荣豪生物环保科技有限公司 | A kind of garbage disposal rotating disk |
| CN108014692A (en) * | 2017-12-21 | 2018-05-11 | 珠海智星荟科技服务有限公司 | A kind of intelligent control sewage purifier |
| CN108187519A (en) * | 2018-01-25 | 2018-06-22 | 广州市延光建材科技有限公司 | A kind of agitating shaft for blender |
| CN108236860B (en) * | 2018-03-19 | 2024-01-09 | 江苏开放大学（江苏城市职业学院） | Self-cleaning vertical stirrer |
| EP3718409A1 (en) * | 2019-04-02 | 2020-10-07 | Ali Group S.r.l. - Carpigiani | Machine and method for thermally treating liquid or semi-liquid food products |
| CN113442573A (en) * | 2021-07-26 | 2021-09-28 | 安徽华哲标签科技有限公司 | Ink homogenizing equipment for full-rotary printing machine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6359341A (en) * | 1986-08-30 | 1988-03-15 | Toyoda Gosei Co Ltd | Stirring impeller |
| US6616318B1 (en) * | 2001-06-08 | 2003-09-09 | Leblanc Jesse M. | Mixing apparatus with an upper mixing element rotatably and reciprocatably associated with a base mixing element |
| CN200996295Y (en) * | 2007-01-18 | 2007-12-26 | 新汶矿业集团汶南煤矿有限责任公司 | Guniting-material agitater under well |
| CN203173853U (en) * | 2013-02-26 | 2013-09-04 | 安徽明珠颜料科技有限公司 | Sewage disposal water tank |
| CN203862163U (en) * | 2014-05-22 | 2014-10-08 | 丹阳市永生涂料有限公司 | Split coating stirring device |
| CN204122029U (en) * | 2014-10-11 | 2015-01-28 | 江西洪都国际机电有限责任公司 | The simple and easy carborundum agitating device of a kind of numerical control |
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2015
- 2015-11-18 CN CN201510795688.1A patent/CN105381747B/en active Active
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Denomination of invention: Agitator for sewage treatment Effective date of registration: 20211129 Granted publication date: 20170531 Pledgee: Tianchang vibration financing Company limited by guarantee Pledgor: YATAI WATER TREATMENT (TIANCHANG) Co.,Ltd. Registration number: Y2021980013500 |