CN109899090A - A kind of remote dustless concrete sprayer - Google Patents
A kind of remote dustless concrete sprayer Download PDFInfo
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- CN109899090A CN109899090A CN201910225307.4A CN201910225307A CN109899090A CN 109899090 A CN109899090 A CN 109899090A CN 201910225307 A CN201910225307 A CN 201910225307A CN 109899090 A CN109899090 A CN 109899090A
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- feeding
- shell
- box
- feed
- feeding shell
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
Abstract
The present invention provides a kind of remote dustless concrete sprayers, it is related to concrete spraying equipment technical field, including fuselage, feeding mechanism, injection equipment and driving mechanism, fuselage includes wheel and chassis, feeding mechanism includes hopper, feeding shell and feed spool, hopper is connected with feeding shell, feed spool is arranged in feeding shell, pressure relief opening is provided on feeding shell, it is centrosymmetric on feed spool and is disposed with multiple feeding storehouses, injection equipment includes pressure feeding spiral, feed box and swirl injection device, pressure feeding spiral is arranged in feed box, swirl injection device is connected with feed box, driving mechanism includes motor, speed reducer and gear-box, motor and speed reducer is connected, gear in speed reducer tooth connection roller box, driving mechanism drives feed spool and pressure feeding spiral rotation.Remote dustless concrete sprayer solves the technical issues of being easy to produce dust at long-distance sand transport concrete pressure deficiency and hopper, also has many advantages, such as that compact-sized, sealing effect is good.
Description
Technical field
The present invention relates to concrete spraying equipment technical field, especially a kind of dustless concrete for long-distance sand transport
Spraying machine.
Background technique
Concrete sprayer is coal mine roadway, essential equipment in railway and vcehicular tunnel process of construction, often at present
The concrete sprayer seen mainly has rotor-type concrete sprayer, enclosed rotor piston type, plunger type concrete sprayer.But turn
Minor concrete sprayer and rotor-piston type concrete injection machine conveying distance are closer, and Dust Capacity is larger, and telephone-moving is frequent, labour
Intensity is larger, and whitewashing efficiency is lower；Plunger type concrete sprayer is mainly used for wet spraying process, and complex process, design is larger, clearly
Reason maintenance is more troublesome.Therefore it is small to need to provide a kind of compact, Dust Capacity, the remote concrete sprayer of conveying distance.
Summary of the invention
To solve to be easy to produce the skill of dust at concrete sprayer long-distance sand transport concrete pressure deficiency and hopper
Art problem, the present invention provides a kind of remote dustless concrete sprayer, specific technical solution is as follows:
A kind of remote dustless concrete sprayer, including fuselage, feeding mechanism, injection equipment and driving mechanism, fuselage
Including wheel, vehicle frame and chassis, feeding mechanism includes that hopper, feeding shell and feed spool, hopper are connected with feeding shell, and feed spool is set
It sets in feeding shell, pressure relief opening is provided on feeding shell, is centrosymmetric on feed spool and is disposed with multiple feeding storehouses；Injection equipment
It is arranged in feed box including pressure feeding spiral, feed box and swirl injection device, pressure feeding spiral, swirl injection device and feed box phase
Even.
Preferably, it is provided with seal rubber between the feed spool of feeding mechanism and feeding shell, is provided on seal rubber
Aperture corresponding with pressure relief opening；Tensioning bolt is provided on feeding shell, adjustment feeding shell compresses seal rubber and feed spool.
Preferably, feed spool is in circular cone shape, and one end of feed spool is provided with splined hole, and the other end is provided with thrust axis
It holds.
It may further be preferable that feeding shell top is installed with opening, feeding shell lower part is provided with connecting cylinder；Hopper deviation is sent
The axial line of material shell is arranged, and the outlet of the upper opening and hopper of feeding shell is correspondingly connected with.
It may further be preferable that the opening of feeding shell is provided with backstand, pressure relief opening is arranged close to feeding shell opener；It send
The opening after pressure relief opening by feeding shell is first passed through when feeding storehouse rotation on material axis.
It may further be preferable that feeding shell is in circular cone shape, it is provided between the feed spool and feeding shell of feeding mechanism close
Rubber is sealed, seal rubber is in circular cone shape；Aperture corresponding with pressure relief opening, the major diameter of seal rubber are provided on seal rubber
End face side is provided with multiple limit holes.
It may further be preferable that feeding shell major diameter end face side is provided with end cap, end cap side is provided with multiple limits
Block and limit hole match, and the end cap other side is provided with tensioning fixing groove.
It is also preferred that driving mechanism includes motor, speed reducer and gear-box, motor and speed reducer is connected, and speed reducer connects
The gear in gear-box is connect, driving mechanism drives feed spool and pressure feeding spiral rotation；Gear-box is provided with gearbox-case, gear
It is provided with multiple gears and bearing block in case, feeding mechanism mounting base and injection equipment installation are additionally provided on gearbox-case
Seat.
It is also preferred that the feed box of injection equipment is connected with the connecting cylinder of feeding shell, the feed inlet of swirl injection device and
The lower part outlet of feed box is connected, and swirl injection device is internally provided with swirl vane, and one end of swirl injection device is provided with air inlet
Mouthful, cyclone air inlet is provided on swirl injection device shell.
It is also preferred that the pressure feeding spiral of injection equipment includes spiral mounting base and helical axis, mounting base is fixed on feed
On case, one end of helical axis is provided with square hole, is connected by square hole with the gear shaft in gear-box.
The beneficial effect comprise that
(1) a kind of remote dustless concrete sprayer provided by the invention, feeding mechanism and injection equipment are arranged up and down,
To facilitate concrete feeding, is cooperated by the feeding shell and feed spool of feeding mechanism, spray is realized by the way of sealing compensation
The high-intensity sealing of slurry process increases the conveying distance of concrete to improve blast pressure, and reduces because sealing is insufficient
Caused by dust pollution.
(2) feed spool and feeding shell of circular cone shape are selected, and according to feed spool and feeding shell to seal rubber and related
Seal member carry out corresponding setting, to keep the production of concrete sprayer more convenient, and be obviously improved feeding
The sealing performance of shaft position and the durability of feed spool, more convenient maintenance management.
(3) the feeding shell of remote dustless concrete sprayer is provided with pressure relief opening, and pressure relief opening makes sending on feed spool
There are high pressures in feed bin, cause high pressure gas to discharge in feeding storehouse and hopper junction, to cause dust pollution；Injection equipment
It is provided with pressure feeding spiral, spiral feeding ensure that the uniform and stable of feeding, reduce the pulse phenomenon of whitewashing process.
(4) discharge port of concrete sprayer uses swirl injection device, and swirl injection device makes the air-supply at concrete outlet
It blows for spiral-flow type, to reduce the resistance of air-supply；Hopper and feeding shell are directly filled out using eccentric connection so as to avoid hopper
Feeding storehouse on full feed spool, reduces the abrasion of seal rubber, to extend the service life of equipment.
In addition the present invention also has many advantages, such as that compact is compact-sized, and the small sealing effect of Dust Capacity is good.
Detailed description of the invention
Fig. 1 is the remote dustless concrete sprayer structural schematic diagram in embodiment 1；
Fig. 2 is remote dustless concrete sprayer partial structure diagram；
Fig. 3 is Fig. 2 dustless concrete sprayer part-structure side view at a distance；
Fig. 4 is feeding machine structure schematic diagram；
Fig. 5 is feeding shell and feed spool assembling structure schematic diagram；
Fig. 6 is feeding shell structure schematic diagram；
Fig. 7 is feed spool structural schematic diagram；
Fig. 8 is injection equipment structural schematic diagram；
Fig. 9 is part injection equipment structural schematic diagram；
Figure 10 is pressure feeding spiral structural schematic diagram；
Figure 11 is tapered distal apart from dustless concrete sprayer structural schematic diagram；
Figure 12 is tapered distal apart from dustless concrete sprayer partial structure diagram；
Figure 13 is feed spool structural schematic diagram in embodiment 2；
Figure 14 is seal rubber structural schematic diagram in embodiment 2；
Figure 15 is end cap structural schematic diagram in embodiment 2；
Figure 16 is feed spool mounting structure schematic diagram in embodiment 2；
In figure: 1- fuselage；11- wheel；12- vehicle frame；The chassis 13-；2- feeding mechanism；21- hopper；22- feeding shell；23-
Feed spool；231- splined hole；24- pressure relief opening；25- seal rubber；251- limit hole；26- connecting cylinder；27- feeding storehouse；The end 28-
Lid；281- limited block；3- injection equipment；31- pressure feeding spiral；32- feed box；33- swirl injection device；34- air inlet；35- rotation
Flow device air inlet；4- driving mechanism；41- motor；42- speed reducer；43- gear-box.
Specific embodiment
In conjunction with shown in Fig. 1 to Figure 16, the present invention provides a kind of specific embodiment parties of remote dustless concrete sprayer
Formula is as follows.
Embodiment 1
A kind of remote dustless concrete sprayer specific structure includes fuselage 1, feeding mechanism 2, injection equipment 3 and driving
Mechanism 4.Feeding mechanism 2 improves the feeding style of existing concrete spraying machine, and injection equipment 3 is increased by way of eddy flow feeding
Big spray distance；Feeding mechanism 2 and about 3 injection equipment are arranged, to facilitate concrete feeding, and compact-sized, are adopted
The high-intensity sealing of whitewashing process is realized with the mode of sealing compensation, to improve blast pressure, increase the conveying of concrete away from
From, and reduce because of dust pollution caused by sealing is insufficient.
Fuselage 1 includes wheel 11, vehicle frame 12 and chassis 13, and the setting of wheel 11 is arranged in 13 lower part of chassis, vehicle frame 12 bottom of at
13 top of disk.Feeding mechanism 2 includes hopper 21, feeding shell 22 and feed spool 23, and hopper 21 and feeding shell 22 connect, feed spool 23
It is arranged in feeding shell 22, pressure relief opening 24 is provided on feeding shell 22, is centrosymmetric on feed spool 23 and is disposed with multiple feedings
Storehouse 27.It is provided with seal rubber 25 between the feed spool 23 and feeding shell 22 of feeding mechanism 2, is provided with and lets out on seal rubber 25
Press the corresponding aperture of mouth 24.Feeding shell 22 is provided with pressure relief opening 24, and pressure relief opening 24 makes 27 memory of feeding storehouse on feed spool 23
In high pressure, high pressure gas is caused to discharge in feeding storehouse and hopper junction, to cause dust pollution.It is provided on feeding shell 22
Tensioning bolt, adjustment feeding shell compress seal rubber 25 and feed spool 23.22 top of feeding shell is installed with opening, under feeding shell 22
Portion is provided with connecting cylinder 26.Hopper 21 deviates the center of circle setting of feeding shell, the outlet of the upper opening and hopper 21 of feeding shell 22
It is correspondingly connected with.The opening of feeding shell 22 is provided with backstand, and pressure relief opening 24 is arranged close to feeding shell opener；On feed spool 23
Feeding storehouse first passes through the opening after pressure relief opening by feeding shell when rotating.Hopper 21 and feeding shell 22 are connected using eccentric, thus
The feeding storehouse that hopper directly fills up on feed spool is avoided, the abrasion of seal rubber is reduced, to extend the service life of equipment.
Injection equipment 3 includes pressure feeding spiral 31, feed box 32 and swirl injection device 33, and pressure feeding spiral 31 is arranged in feed box
In 32, swirl injection device 33 is connected with feed box 32.The feed box 32 of injection equipment 3 is connected with the connecting cylinder 26 of feeding shell, rotation
The feed inlet of stream injector 33 is connected with the lower part outlet of feed box, and swirl injection device 33 is internally provided with swirl vane, eddy flow
One end of injector is provided with air inlet 34, is provided with cyclone air inlet 35 on 33 shell of swirl injection device.Injection equipment
Pressure feeding spiral 31 includes spiral mounting base and helical axis, and mounting base is fixed on feed box 32, one end side of being provided with of helical axis
Shape hole is connected by square hole with the gear shaft in gear-box.Injection equipment is provided with pressure feeding spiral, and spiral feeding ensure that
Uniform and stable, the pulse phenomenon of reduction whitewashing process of feeding.The discharge port of concrete sprayer uses swirl injection device, eddy flow
Injector makes the air-supply spiral-flow type at concrete outlet blow, to reduce the resistance of air-supply.
Driving mechanism 4 includes motor 41, speed reducer 42 and gear-box 43, and motor 41 is connected with speed reducer 42, speed reducer 42
Gear in tooth connection roller box 43, driving mechanism 4 drive feed spool 23 and pressure feeding spiral 31 to rotate.Gear-box 43 is provided with gear
Box enclosure is provided with multiple gears and bearing block in gear-box 43, be additionally provided on gearbox-case feeding mechanism mounting base and
Injection equipment mounting base.In addition the present invention also has many advantages, such as that compact is compact-sized, and the small sealing effect of Dust Capacity is good.
Embodiment 2
On the basis of embodiment 1, the present embodiment has made further improvement to the feeding mechanism of concrete sprayer, from
And the sealing performance of feeding mechanism is improved, and simplify the feeding mechanism manufacture craft of concrete sprayer.
A kind of tapered distal includes fuselage 1, feeding mechanism 2,3 and of injection equipment apart from dustless concrete sprayer specific structure
Driving mechanism 4.Feeding mechanism 2 improves the feeding style of existing concrete spraying machine, improves the sealing of concrete sprayer
Performance simplifies the manufacture craft of feeding mechanism part, facilitates the maintenance management of equipment；Injection equipment 3 passes through eddy flow feeding
Mode increase spray distance；Feeding mechanism 2 and about 3 injection equipment are arranged, to facilitate concrete feeding, and structure
It is compact, the high-intensity sealing of whitewashing process is realized by the way of sealing compensation, to improve blast pressure, increases concrete
Conveying distance, and reduce because of dust pollution caused by sealing is insufficient.
Fuselage 1 includes wheel 11, vehicle frame 12 and chassis 13, and the setting of wheel 11 is arranged in 13 lower part of chassis, vehicle frame 12 bottom of at
13 top of disk.Feeding mechanism 2 includes hopper 21, feeding shell 22 and feed spool 23, and hopper 21 and feeding shell 22 connect, feed spool 23
It is arranged in feeding shell 22, pressure relief opening 24 is provided on feeding shell 22, is centrosymmetric on feed spool 23 and is disposed with multiple feedings
Storehouse 27.Feeding shell 22 is provided with pressure relief opening 24, and pressure relief opening 24 makes in the feeding storehouse 27 on feed spool 23 that there are high pressures, leads to height
Body of calming the anger is discharged in feeding storehouse and hopper junction, to cause dust pollution.
Wherein feed spool 23 is in circular cone shape, and one end of feed spool 23 is provided with splined hole 231, and the other end is provided with thrust
Bearing, as shown in figure 13.22 top of feeding shell is installed with opening, and 22 lower part of feeding shell is provided with connecting cylinder 26.Hopper 21 deviates
The axial line of feeding shell is arranged, and the outlet of the upper opening and hopper 21 of feeding shell 22 is correspondingly connected with.Hopper 21 and feeding shell 22
It is connected using bias, the feeding storehouse on feed spool is directly filled up so as to avoid hopper, reduces the abrasion of seal rubber, to prolong
The service life of long equipment.In addition feeding shell 22 is also in circular cone shape, is set between the feed spool 23 and feeding shell 22 of feeding mechanism 2
It is equipped with seal rubber 25, seal rubber 25 is also in circular cone shape；Be provided on seal rubber 25 with the corresponding aperture of pressure relief opening 24,
The major diameter end face side of seal rubber 25 is provided with multiple limit holes 251, as shown in figure 14.The major diameter end face of feeding shell 22
Side is provided with end cap 28, and 28 side of end cap is provided with multiple limited blocks 281 and limit hole 251 matches, 28 other side of end cap
It is provided with tensioning fixing groove, as shown in figure 15.Actual fabrication and use show tapered distal sending apart from dustless concrete sprayer
Expect that mechanism section sealing performance is more preferable, adjusting is more convenient, and makes simple.
Injection equipment 3 includes pressure feeding spiral 31, feed box 32 and swirl injection device 33, and pressure feeding spiral 31 is arranged in feed box
In 32, swirl injection device 33 is connected with feed box 32.The feed box 32 of injection equipment 3 is connected with the connecting cylinder 26 of feeding shell, rotation
The feed inlet of stream injector 33 is connected with the lower part outlet of feed box, and swirl injection device 33 is internally provided with swirl vane, eddy flow
One end of injector is provided with air inlet 34, is provided with cyclone air inlet 35 on 33 shell of swirl injection device.Injection equipment
Pressure feeding spiral 31 includes spiral mounting base and helical axis, and mounting base is fixed on feed box 32, one end side of being provided with of helical axis
Shape hole is connected by square hole with the gear shaft in gear-box.Injection equipment is provided with pressure feeding spiral, and spiral feeding ensure that
Uniform and stable, the pulse phenomenon of reduction whitewashing process of feeding.The discharge port of concrete sprayer uses swirl injection device, eddy flow
Injector makes the air-supply spiral-flow type at concrete outlet blow, to reduce the resistance of air-supply.
Driving mechanism 4 includes motor 41, speed reducer 42 and gear-box 43, and motor 41 is connected with speed reducer 42, speed reducer 42
Gear in tooth connection roller box 43, driving mechanism 4 drive feed spool 23 and pressure feeding spiral 31 to rotate.Gear-box 43 is provided with gear
Box enclosure is provided with multiple gears and bearing block in gear-box 43, be additionally provided on gearbox-case feeding mechanism mounting base and
Injection equipment mounting base.In addition the present invention also has many advantages, such as that compact is compact-sized, and the small sealing effect of Dust Capacity is good.
Certainly, the above description is not a limitation of the present invention, and the present invention is also not limited to the example above, this technology neck
The variations, modifications, additions or substitutions that the technical staff in domain is made within the essential scope of the present invention also should belong to of the invention
Protection scope.
Claims (10)
1. a kind of remote dustless concrete sprayer, including fuselage, feeding mechanism, injection equipment and driving mechanism, fuselage packet
Include wheel, vehicle frame and chassis, which is characterized in that the feeding mechanism includes hopper, feeding shell and feed spool, hopper and feeding shell
Connection, feed spool be arranged in feeding shell, pressure relief opening is provided on feeding shell, be centrosymmetric on feed spool arrangement there are two or
Multiple feeding storehouses；The injection equipment includes that pressure feeding spiral, feed box and swirl injection device, pressure feeding spiral are arranged in feed box
Interior, swirl injection device is connected with feed box.
2. a kind of remote dustless concrete sprayer according to claim 1, which is characterized in that the feeding mechanism
It is provided with seal rubber between feed spool and feeding shell, aperture corresponding with pressure relief opening is provided on seal rubber；The feeding
Tensioning bolt is provided on shell, adjustment feeding shell compresses seal rubber and feed spool.
3. a kind of remote dustless concrete sprayer according to claim 1, which is characterized in that the feed spool is in circle
Pyramidal, one end of feed spool is provided with splined hole, and the other end is provided with thrust bearing.
4. a kind of remote dustless concrete sprayer according to claim 2 or 3, which is characterized in that the feeding shell
Top is installed with opening, and feeding shell lower part is provided with connecting cylinder；The hopper deviates the axial line setting of feeding shell, feeding shell
The outlet of upper opening and hopper is correspondingly connected with.
5. a kind of remote dustless concrete sprayer according to claim 2, which is characterized in that the feeding shell is opened
Backstand is provided at mouthful, pressure relief opening is arranged close to feeding shell opener；Feeding storehouse on the feed spool is first passed through when rotating and is let out
By the opening of feeding shell after pressure mouth.
6. a kind of remote dustless concrete sprayer according to claim 3, which is characterized in that the feeding shell is in circle
It is pyramidal, seal rubber is provided between the feed spool and feeding shell of the feeding mechanism, seal rubber is in circular cone shape；It is described
Aperture corresponding with pressure relief opening is provided on seal rubber, the major diameter end face side of seal rubber is provided with multiple limit holes.
7. a kind of remote dustless concrete sprayer according to claim 6, which is characterized in that the feeding shell is straight greatly
Diameter end face side is provided with end cap, and end cap side is provided with multiple limited blocks and limit hole matches, and the end cap other side is provided with
It is tensioned fixing groove.
8. a kind of remote dustless concrete sprayer according to claim 1, which is characterized in that the driving mechanism packet
Motor, speed reducer and gear-box are included, motor and speed reducer is connected, and the gear in speed reducer tooth connection roller box, driving mechanism drives
Feed spool and pressure feeding spiral rotation；The gear-box is provided with gearbox-case, and multiple gears and bearing are provided in gear-box
, feeding mechanism mounting base and injection equipment mounting base are additionally provided on gearbox-case.
9. a kind of remote dustless concrete sprayer according to claim 1, which is characterized in that the injection equipment
Feed box is connected with the connecting cylinder of feeding shell, and the feed inlet of the swirl injection device is connected with the lower part outlet of feed box, eddy flow
Injector interior is provided with swirl vane, and one end of swirl injection device is provided with air inlet, is provided on swirl injection device shell
Cyclone air inlet.
10. a kind of remote dustless concrete sprayer according to claim 9, which is characterized in that the injection equipment
Pressure feeding spiral include spiral mounting base and helical axis, mounting base is fixed on feed box, and one end of the helical axis is provided with
Square hole is connected by square hole with the gear shaft in gear-box.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910225307.4A CN109899090B (en) | 2019-03-25 | 2019-03-25 | Remote dustless concrete sprayer |
| PCT/CN2019/090459 WO2020191923A1 (en) | 2019-03-25 | 2019-06-10 | Long-distance dust-free shotcrete machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910225307.4A CN109899090B (en) | 2019-03-25 | 2019-03-25 | Remote dustless concrete sprayer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109899090A true CN109899090A (en) | 2019-06-18 |
| CN109899090B CN109899090B (en) | 2020-12-08 |
Family
ID=66952924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910225307.4A Active CN109899090B (en) | 2019-03-25 | 2019-03-25 | Remote dustless concrete sprayer |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109899090B (en) |
| WO (1) | WO2020191923A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236977A (en) * | 2020-03-12 | 2020-06-05 | 山东亚瑞特机电工程科技有限公司 | Remote patching machine of two butterfly valves |
| CN111348441A (en) * | 2020-03-12 | 2020-06-30 | 山东科技大学 | Double-piston pneumatic conveyor |
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| CN105484771A (en) * | 2016-02-19 | 2016-04-13 | 山东天河科技股份有限公司 | Remote dust-free concrete sprayer |
| CN205858374U (en) * | 2016-08-08 | 2017-01-04 | 青岛青科重工有限公司 | Wet-spraying machine cyclone device |
| CN206845189U (en) * | 2017-04-17 | 2018-01-05 | 河南省耿力工程设备有限公司 | A kind of concrete spraying machine cyclone |
| CN206897686U (en) * | 2017-03-17 | 2018-01-19 | 陕西金石混凝土科技发展有限公司 | A kind of eddy flow wind system for rotor-piston type concrete injection machine |
| CN206941592U (en) * | 2017-07-21 | 2018-01-30 | 鹤壁中盛冶金工程有限公司 | A kind of automatic agitating type concrete sprayer |
| CN109356617A (en) * | 2018-11-22 | 2019-02-19 | 徐州大屯工贸实业公司 | A kind of novel rotor type concrete ejection unit |
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2019
- 2019-03-25 CN CN201910225307.4A patent/CN109899090B/en active Active
- 2019-06-10 WO PCT/CN2019/090459 patent/WO2020191923A1/en active Application Filing
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236977A (en) * | 2020-03-12 | 2020-06-05 | 山东亚瑞特机电工程科技有限公司 | Remote patching machine of two butterfly valves |
| CN111348441A (en) * | 2020-03-12 | 2020-06-30 | 山东科技大学 | Double-piston pneumatic conveyor |
| CN111348441B (en) * | 2020-03-12 | 2021-03-30 | 山东科技大学 | Double-piston pneumatic conveyor |
| CN111236977B (en) * | 2020-03-12 | 2021-07-02 | 山东亚瑞特机电工程科技有限公司 | Remote patching machine of two butterfly valves |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109899090B (en) | 2020-12-08 |
| WO2020191923A1 (en) | 2020-10-01 |
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