CN113146844A - Concrete mixing equipment - Google Patents
Concrete mixing equipment Download PDFInfo
- Publication number
- CN113146844A CN113146844A CN202110520149.2A CN202110520149A CN113146844A CN 113146844 A CN113146844 A CN 113146844A CN 202110520149 A CN202110520149 A CN 202110520149A CN 113146844 A CN113146844 A CN 113146844A
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- CN
- China
- Prior art keywords
- stirring
- pipe
- dust
- concrete mixing
- push rod
- 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.)
- Pending
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
- B28C5/10—Mixing in containers not actuated to effect the mixing
- B28C5/12—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers
- B28C5/14—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers the stirrers having motion about a horizontal or substantially horizontal axis
- B28C5/146—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers the stirrers having motion about a horizontal or substantially horizontal axis with several stirrers with parallel shafts in one container
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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
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/10—Maintenance of mixers
- B01F35/145—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means
- B01F35/1452—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means using fluids
- B01F35/1453—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means using fluids by means of jets of fluid, e.g. air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/04—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area from a small area, e.g. a tool
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
- B28C5/0806—Details; Accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
- B28C5/0806—Details; Accessories
- B28C5/0831—Drives or drive systems, e.g. toothed racks, winches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/02—Controlling the operation of the mixing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/06—Supplying the solid ingredients, e.g. by means of endless conveyors or jigging conveyors
- B28C7/067—Supplying the solid ingredients, e.g. by means of endless conveyors or jigging conveyors by means of stationary hoppers, chambers or bins from which the material is fed gravitationally, e.g. having agitating means therein
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The invention discloses concrete stirring and mixing equipment, which relates to the technical field of stirring equipment and comprises a feed hopper, a stirring box, a dust removal mechanism and a cleaning mechanism, wherein a dust hood is arranged above the feed hopper and is connected with the feed hopper through a connecting piece, the stirring box comprises a box body, a stirring shaft and a discharge mechanism, the discharge mechanism comprises two circular plates, a baffle plate and a central pipe, a plurality of water outlets are arranged on one side of the central pipe, which is far away from the baffle plate, the dust removal mechanism comprises a suction fan, a dust suction pipe and a collection container, the cleaning mechanism comprises an electric push rod and a water pump, a water inlet pipe is arranged at the telescopic end of the electric push rod, the water inlet pipe and the central pipe are coaxially arranged, the outer diameter of the water inlet pipe is smaller than that of the central pipe, the water pump is arranged above the electric push rod, and the, and possess the function of automatic washing agitator tank and puddler, wash more thoroughly.
Description
Technical Field
The invention relates to the technical field of stirring equipment, in particular to concrete stirring and mixing equipment.
Background
The concrete is mainly formed by mixing cement, sand, pebbles and water in proportion, and then the raw materials need to be mixed and stirred when the concrete is prepared, so that the raw materials are uniformly distributed, the hardness of the solidified concrete is increased, and therefore, concrete stirring equipment needs to be used, the concrete is automatically stirred and mixed, and the concrete is more uniformly mixed, but the prior art has the following defects:
(1) concrete raw materials can produce a large amount of dust at the feeding, can cause the raw materials extravagant when influencing the production environment.
(2) Since concrete mainly has a gel property, it is easily attached to the paddle during mixing and it is difficult to clean the paddle after mixing.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide concrete mixing equipment which can quickly adsorb and collect dust, improve the production environment quality and reduce the raw material waste, has the function of automatically flushing a stirring box and a stirring rod and is more thorough in flushing.
The purpose of the invention is realized by adopting the following technical scheme:
the concrete mixing device comprises a feed hopper, a stirring box, a dust removal mechanism and a cleaning mechanism, wherein a dust hood is arranged above the feed hopper and is connected with the feed hopper through a connecting piece;
the stirring box comprises a box body, a stirring shaft and a discharging mechanism, the upper end of the box body is of an open structure and is connected with the feeding hopper, the lower end of the box body is provided with a discharging port, the stirring shaft is rotatably arranged in the box body and is connected with a driving mechanism, a plurality of stirring rods are uniformly arranged on the stirring shaft, stirring blades are arranged on the stirring rods, the discharging mechanism comprises two circular plates, a material baffle plate and a central pipe, the two circular plates are arranged in parallel, the material baffle plate is arranged between the two circular plates, the central pipe penetrates through the central positions of the two circular plates, the central pipe is rotatably arranged at the discharging port and is connected with a driving motor, and one side of the central pipe, which is far away from the material baffle plate, is provided with a plurality of water discharging ports;
the dust removal mechanism comprises a suction fan, a dust suction pipe and a collection container, the suction fan is arranged above the stirring box, two ends of the dust suction pipe are respectively connected with the suction fan and the dust suction cover, and the other end of the suction fan is connected with the collection container;
the cleaning mechanism comprises an electric push rod and a water pump, a water inlet pipe is arranged at the telescopic end of the electric push rod, the water inlet pipe is coaxially arranged with the central pipe, the outer diameter of the water inlet pipe is smaller than that of the central pipe, the water pump is arranged above the electric push rod, and the water pump is communicated with one side of the water inlet pipe through a connecting pipe.
Further, the connecting piece includes two fixed blocks and adjusting screw, two the fixed block sets up respectively the lateral wall of suction hood and feeder hopper, be provided with the screw hole on the fixed block, adjusting screw passes two in proper order the fixed block, and with correspond screw hole threaded connection.
Further, the included angle between the adjacent stirring rods is 90 degrees.
Furthermore, the included angle of the joint of the stirring blade and the stirring rod is 20 degrees.
Further, the inlet tube is provided with waterproof ring, waterproof ring's external diameter is greater than the external diameter of center tube.
Furthermore, the driving mechanism is a belt driving mechanism, and a reduction gearbox is arranged between the belt driving mechanism and the stirring shaft.
Further, the collecting container is provided with a conveying pipe, and the conveying pipe is communicated with the feed hopper.
Further, the electric water pump further comprises a controller, and the controller is respectively electrically connected with the driving mechanism, the driving motor, the suction fan, the electric push rod and the water pump.
Compared with the prior art, the invention has the beneficial effects that:
(1) the dust suction hood and the dust removal mechanism are arranged, when the suction fan works, dust raised above the feed hopper is sucked into the collection container through the dust suction pipe and the dust suction hood, and the purpose of rapid dust removal is achieved.
(2) Be provided with wiper mechanism, it is rotatory through driving motor drive center tube behind the ejection of compact for the outlet is just to the agitator tank in, through the external clean water of water pump, the during operation goes into the inlet tube with clean water pump, and meanwhile electric putter promotes the inlet tube in the center tube, makes clean water from the outlet, erodees the stirring leaf in the agitator tank, and the cooperation (mixing) shaft is rotatory simultaneously, carries out the rinse thoroughly to puddler and agitator tank inner wall.
The dust collecting device can quickly adsorb and collect dust, improve the production environment quality and reduce the raw material waste, and has the function of automatically flushing the stirring box and the stirring rod, so that the flushing is more thorough.
Drawings
FIG. 1 is a front view of an embodiment of the present invention;
FIG. 2 is a side view of an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an agitator tank according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a cleaning mechanism according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a discharging mechanism in an embodiment of the invention.
In the figure: 1. a feed hopper; 2. a stirring box; 21. a box body; 22. a stirring shaft; 221. a stirring rod; 222. stirring blades; 23. a discharge mechanism; 231. a circular plate; 232. a striker plate; 233. a central tube; 2331. a water outlet; 3. a drive mechanism; 31. a reduction gearbox; 4. a dust hood; 5. a dust removal mechanism; 51. a suction fan; 52. a dust collection pipe; 53. a collection container; 531. a delivery pipe; 6. a connecting member; 61. a fixed block; 62. adjusting the screw rod; 7. a drive motor; 8. a cleaning mechanism; 81. an electric push rod; 811. a water inlet pipe; 812. a waterproof ring; 82. a water pump; 821. and (4) connecting the pipes.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
As shown in fig. 1-5, the concrete mixing device comprises a feed hopper 1, a stirring box 2, a dust removing mechanism 5 and a cleaning mechanism 8, wherein a dust hood 4 is arranged above the feed hopper 1, the dust hood 4 is connected with the feed hopper 1 through a connecting piece 6, and a gap is reserved between the dust hood 4 and the feed hopper 1 for feeding.
The dust removing mechanism 5 comprises a suction fan 51, a dust suction pipe 52 and a collecting container 53, wherein the suction fan 51 is arranged above the stirring box 2, two ends of the dust suction pipe 52 are respectively connected with the suction fan 51 and the dust hood 4, and the other end of the suction fan 51 is connected with the collecting container 53.
The cleaning mechanism 8 comprises an electric push rod 81 and a water pump 82, a water inlet pipe 811 is arranged at the telescopic end of the electric push rod 81, the water inlet pipe 811 is coaxially arranged with a central pipe 233, the outer diameter of the water inlet pipe 811 is smaller than that of the central pipe 233, the telescopic end of the electric push rod 81 can drive the water inlet pipe 811 to enter or exit the central pipe 233, the water pump 82 is arranged above the electric push rod 81, the water pump 82 is communicated with one side of the water inlet pipe 811 through a connecting pipe 821, and the water inlet end of the water pump 82 is externally connected with a water source supply device.
As a preferred embodiment, the connecting member 6 includes two fixing blocks 61 and an adjusting screw 62, the two fixing blocks 61 are respectively disposed on the sidewalls of the dust hood 4 and the feeding hopper 1, threaded holes are disposed on the fixing blocks 61, the adjusting screw 62 sequentially passes through the two fixing blocks 61 and is in threaded connection with the corresponding threaded holes, and the upper fixing block 61 and the dust hood 4 can be driven to ascend or descend by selecting the adjusting screw 62, so as to adjust the distance between the dust hood 4 and the feeding hopper 1, thereby adjusting the optimal dust collection effect.
In a preferred embodiment, the included angle between adjacent stirring rods 221 is 90 °, the included angle between the connecting portion of the stirring blade 222 and the stirring rod 221 is 20 °, so that the stirring shaft 22 is uniformly distributed on the side wall of the stirring shaft 22, and the installation included angle between the stirring blade 222 and the stirring rod 221 makes the concrete in the stirring box 2 be stirred and mixed more fully during the stirring process.
In a preferred embodiment, the water inlet pipe 811 is provided with a waterproof ring 812, the outer diameter of the waterproof ring 812 is larger than that of the central pipe 233, and when the electric push rod 81 drives the water inlet pipe 811 into the central pipe 233, the waterproof ring 812 seals the end of the central pipe 233 to prevent clean water from overflowing from the end of the central pipe 233 during the cleaning process and affecting the flushing effect.
In a preferred embodiment, the driving mechanism 3 is a belt driving mechanism 3, a reduction gearbox 31 is arranged between the belt driving mechanism 3 and the stirring shaft 22, the belt driving mechanism 3 is connected with the input end of the reduction gearbox 31, the output end of the reduction gearbox 31 is in transmission connection with the stirring shaft 22, and the transmission efficiency is adjusted through the reduction gearbox 31.
In a preferred embodiment, the collecting container 53 is provided with a conveying pipe 531, the conveying pipe 531 is communicated with the feeding hopper 1, and the dust sucked into the collecting container 53 is guided into the feeding hopper 1 through the conveying pipe 531 and directly guided into the feeding hopper 1 to enter the stirring box 2, so that the utilization rate of raw materials is improved, and the waste is reduced.
As a preferred embodiment, the device further comprises a controller, wherein the controller is electrically connected with the driving mechanism 3, the driving motor 7, the suction fan 51, the electric push rod 81 and the water pump 82 respectively, in this embodiment, the controller is a PLC controller, and the automation control degree is improved and the labor intensity is reduced through a PLC program.
The working principle of the invention is as follows:
put into concrete raw materials to agitator tank 2 through feeder hopper 1 in, it is rotatory to drive (mixing) shaft 22 through actuating mechanism 3 and drive puddler 221 and stirring leaf 222, stirs the mixture to concrete raw materials, and the back is accomplished in the stirring, arranges the rotation of material mechanism 23 through the drive of driving motor 7 drive for striker plate 232 keeps away from the discharge gate, makes the stirring accomplish and drives the concrete and discharge from the discharge gate. During the stirring process, the suction fan 51 is started, and the dust raised above the feed hopper 1 is sucked into the collection container 53 through the dust suction pipe 52 and the dust suction hood 4.
After discharging, the driving motor 7 drives the central pipe 233 to rotate, so that the water outlet 2331 is right opposite to the inside of the stirring box 2, clean water is externally connected with the water pump 82, the clean water pump 82 enters the water inlet pipe 811 during working, meanwhile, the telescopic end of the electric push rod 81 extends to push the water inlet pipe 811 to the central pipe 233, so that the clean water flows through the water outlet 2331 to flush the stirring blades 222 in the stirring box 2 and is matched with the stirring shaft 22 to rotate, the stirring rod 221 and the inner wall of the stirring box 2 are thoroughly washed, in the washing process, the driving motor 7 can drive the central pipe 233 to rotate back and forth, so that the angle of the water outlet 2331 in the stirring box 2 is changed, the inner wall of the stirring box 2 and the stirring rod 221 are fully washed, and the washed sewage is discharged from the bottom of the stirring box 2.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.
Claims (8)
1. Concrete mixing equipment which characterized in that: the dust collection device comprises a feed hopper, a stirring box, a dust removal mechanism and a cleaning mechanism, wherein a dust collection cover is arranged above the feed hopper and is connected with the feed hopper through a connecting piece;
the stirring box comprises a box body, a stirring shaft and a discharging mechanism, the upper end of the box body is of an open structure and is connected with the feeding hopper, the lower end of the box body is provided with a discharging port, the stirring shaft is rotatably arranged in the box body and is connected with a driving mechanism, a plurality of stirring rods are uniformly arranged on the stirring shaft, stirring blades are arranged on the stirring rods, the discharging mechanism comprises two circular plates, a material baffle plate and a central pipe, the two circular plates are arranged in parallel, the material baffle plate is arranged between the two circular plates, the central pipe penetrates through the central positions of the two circular plates, the central pipe is rotatably arranged at the discharging port and is connected with a driving motor, and one side of the central pipe, which is far away from the material baffle plate, is provided with a plurality of water discharging ports;
the dust removal mechanism comprises a suction fan, a dust suction pipe and a collection container, the suction fan is arranged above the stirring box, two ends of the dust suction pipe are respectively connected with the suction fan and the dust suction cover, and the other end of the suction fan is connected with the collection container;
the cleaning mechanism comprises an electric push rod and a water pump, a water inlet pipe is arranged at the telescopic end of the electric push rod, the water inlet pipe is coaxially arranged with the central pipe, the outer diameter of the water inlet pipe is smaller than that of the central pipe, the water pump is arranged above the electric push rod, and the water pump is communicated with one side of the water inlet pipe through a connecting pipe.
2. The concrete mixing apparatus of claim 1, wherein: the connecting piece includes two fixed blocks and adjusting screw, two the fixed block sets up respectively the lateral wall of suction hood and feeder hopper, be provided with the screw hole on the fixed block, adjusting screw passes two in proper order the fixed block, and with correspond screw hole threaded connection.
3. The concrete mixing apparatus of claim 1, wherein: the included angle between the adjacent stirring rods is 90 degrees.
4. The concrete mixing apparatus of claim 1, wherein: the included angle of the joint of the stirring blade and the stirring rod is 20 degrees.
5. The concrete mixing apparatus of claim 1, wherein: the inlet tube is provided with waterproof ring, waterproof ring's external diameter is greater than the external diameter of center tube.
6. The concrete mixing apparatus of claim 1, wherein: the driving mechanism is a belt driving mechanism, and a reduction gearbox is arranged between the belt driving mechanism and the stirring shaft.
7. The concrete mixing apparatus of claim 1, wherein: the collecting container is provided with a conveying pipe, and the conveying pipe is communicated with the feed hopper.
8. The concrete mixing apparatus of claim 1, wherein: the electric water pump is characterized by further comprising a controller, wherein the controller is electrically connected with the driving mechanism, the driving motor, the suction fan, the electric push rod and the water pump respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110520149.2A CN113146844A (en) | 2021-05-13 | 2021-05-13 | Concrete mixing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110520149.2A CN113146844A (en) | 2021-05-13 | 2021-05-13 | Concrete mixing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113146844A true CN113146844A (en) | 2021-07-23 |
Family
ID=76875086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110520149.2A Pending CN113146844A (en) | 2021-05-13 | 2021-05-13 | Concrete mixing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113146844A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110054957A (en) * | 2009-11-19 | 2011-05-25 | 주식회사 스페코 | Driver for a mixer |
| CN209365008U (en) * | 2018-08-13 | 2019-09-10 | 天津豹鸣股份有限公司 | A kind of cement expansive material agitating device with dedusting cleaning function |
| CN209453900U (en) * | 2018-09-29 | 2019-10-01 | 云南建投曲靖建材有限公司 | A kind of regeneration concrete production Double-horizontal-shaft Efficient Agitator |
| CN209478570U (en) * | 2018-09-22 | 2019-10-11 | 天津班郢建筑工程有限公司 | A kind of packaged type architectural engineering cement mixer |
| CN211436051U (en) * | 2019-11-08 | 2020-09-08 | 金华市中通塑粉有限公司 | Automatic batching device for plastic powder production |
| CN112428420A (en) * | 2020-11-17 | 2021-03-02 | 云南六洲建筑劳务有限公司 | Hierarchical formula construction material agitating unit |
| CN112720844A (en) * | 2020-12-15 | 2021-04-30 | 郑州正大建筑技术有限公司 | Vertical concrete mixer |
-
2021
- 2021-05-13 CN CN202110520149.2A patent/CN113146844A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110054957A (en) * | 2009-11-19 | 2011-05-25 | 주식회사 스페코 | Driver for a mixer |
| CN209365008U (en) * | 2018-08-13 | 2019-09-10 | 天津豹鸣股份有限公司 | A kind of cement expansive material agitating device with dedusting cleaning function |
| CN209478570U (en) * | 2018-09-22 | 2019-10-11 | 天津班郢建筑工程有限公司 | A kind of packaged type architectural engineering cement mixer |
| CN209453900U (en) * | 2018-09-29 | 2019-10-01 | 云南建投曲靖建材有限公司 | A kind of regeneration concrete production Double-horizontal-shaft Efficient Agitator |
| CN211436051U (en) * | 2019-11-08 | 2020-09-08 | 金华市中通塑粉有限公司 | Automatic batching device for plastic powder production |
| CN112428420A (en) * | 2020-11-17 | 2021-03-02 | 云南六洲建筑劳务有限公司 | Hierarchical formula construction material agitating unit |
| CN112720844A (en) * | 2020-12-15 | 2021-04-30 | 郑州正大建筑技术有限公司 | Vertical concrete mixer |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20210723 |