CN105060233B - A kind of slurry delivery device - Google Patents
A kind of slurry delivery device Download PDFInfo
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- CN105060233B CN105060233B CN201510414942.9A CN201510414942A CN105060233B CN 105060233 B CN105060233 B CN 105060233B CN 201510414942 A CN201510414942 A CN 201510414942A CN 105060233 B CN105060233 B CN 105060233B
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Abstract
The present invention provides a kind of slurry delivery device, to by slurry pipeline transport to wallboard machine, slurry delivery device includes holder and mixing-filling machine；Mixing-filling machine is rack-mount, and to stir slurry, it is characterised in that：Slurry delivery device further includes having controller and pumping mechanism, and pumping mechanism includes the first solenoid valve, second solenoid valve, pump structure, delivery pipe and takes out material machine；Two actuator of pump structure, two oil cylinders, two-piston bar, the first caching cylinder, the second caching cylinder, the first check valve and the second check valve, controller is electrically connected the first solenoid valve, second solenoid valve, when the first solenoid closure, when second solenoid valve disconnects, slurry can be pushed into delivery pipe by the piston shelf in the first caching cylinder with piston when the first check valve is opened；When the first solenoid valve disconnects, and second solenoid valve is closed, the piston shelf in the second caching cylinder can be mobile with corresponding piston rod with piston and slurry is pushed into delivery pipe when the second check valve is opened.
Description
【Technical field】
The present invention relates to slurry manufacture field, more particularly to the slurry delivery device in a kind of wallboard machine.
【Background technology】
Pumping mechanism in current wallboard machine production equipment, is small displacement stock pump in using mostly, due to manufacture wallboard
There are a large amount of a diameter of 3-5mmEPS (expandable polystyrene) foam beads in raw material, and the pumping particle of middle small displacement stock pump
A diameter of 2-5mm, so easily causing obstruction in pumping procedure.If replacing the stock pump of larger displacement, cost is too high；Separately
Outside, traditional pumping mechanism caches cylinder, in wallboard manufacturing process, the slurry in cylinder to be cached only with an individual storing
After being pumped to wallboard machine, needing waiting caching cylinder to fill slurry again could continue to pump slurry, when the waste of this process is a large amount of
Between, and cause the lag entirely produced.
【Invention content】
In view of the foregoing, it is necessary to provide a kind of slurry delivery device, which being capable of effective material conveying
Slurry, prevents from blocking, and can accelerate production efficiency.
In order to achieve the above objectives, the technical solution adopted in the present invention is：A kind of slurry delivery device, to slurry is defeated
It send to wallboard machine, the slurry delivery device includes holder and mixing-filling machine；The mixing-filling machine is mounted on the branch
On frame, and to stir slurry, the slurry delivery device further includes having controller and pumping mechanism, and the pumping mechanism includes
There are the first solenoid valve, second solenoid valve, pump structure, delivery pipe and takes out material machine；The delivery pipe be connected to the pump structure with
The wallboard machine, the pumping material machine connect the delivery pipe, to by the material pulp pumping in delivery pipe to the wallboard machine；It is described
Pump structure includes two actuators, two oil cylinders, two-piston bar, the first caching cylinder, the second caching cylinder, the first check valve and second
Check valve；First solenoid valve and the second solenoid valve are electrically connected two actuator, and two oil cylinder connects respectively
Connect two actuator and the two-piston bar, the two-piston bar is housed in the first caching cylinder, described second slow respectively
Cylinder is deposited, and is equipped with piston shelf and piston in end respectively, the piston shelf is set on corresponding piston rod, the piston installation
On corresponding piston rod and it is housed in corresponding piston shelf；First check valve one end connects the first caching cylinder
Bottom, the other end connect the delivery pipe via transfer tube, and second check valve one end connects the bottom of the second caching cylinder
Portion, delivery pipe described in the other end；The controller is controlling the closure of first solenoid valve, the second solenoid valve or disconnected
It opens；When first solenoid closure, when the second solenoid valve disconnects, the actuator of first solenoid valve is connected to drive
The piston rod of the dynamic first caching cylinder is moved along the direction close to first check valve, the piston shelf and the piston energy
It reaches mobile with corresponding piston rod and slurry is pushed into the delivery pipe when first check valve is opened；When first electricity
Magnet valve disconnects, and when the second solenoid valve is closed, connects the actuator of the second solenoid valve to drive second caching
The piston rod of cylinder is moved along the direction close to second check valve, and the piston shelf can be with corresponding piston with the piston
Bar is mobile and slurry is pushed into the delivery pipe when second check valve is opened.
Preferably, the piston shelf includes frame, material leakage frame and washer, and the frame is set in corresponding piston rod,
The material leakage frame is mounted in the frame, and the washer is mounted on the bottom of the frame, the lower end point of the two-piston bar
It not can extend into corresponding frame, and corresponding material leakage frame can be passed through, the two-piston bar is separately mounted to the two-piston
The end of bar, and between corresponding material leakage frame and washer.
Preferably, the washer offers discharge port, the piston can to discharge port described in opening and closing of fault, and
When closing the discharge port slurry is pushed with together with the piston shelf.
Preferably, the washer includes upper gasket, sealing ring and lower gasket, and the sealing ring is clamped in the upper gasket
Between the lower gasket.
Preferably, the outer diameter of the washer is suitable with corresponding first caching cylinder, the second caching internal diameter of cylinder.
Preferably, first check valve and second check valve respectively included outer cylinder body, inner cylinder body, installation set,
Screw rod, elastic component and baffle；The inner cylinder body is located in the outer cylinder body, and is connect with the outer cylinder body, the installation set peace
In the inner cylinder body, the screw rod is housed in the installation set, and both ends are equipped with upper cap nut and lower nut, the bullet
Property part resilient clamp between the upper cap nut and the installation set, the baffle is mounted on the screw rod, and positioned at described
Below installation set and against the lower nut；The baffle closes the bottom of the inner cylinder body, and becomes in the elastic component elasticity
The inner cylinder body is detached from when shape.
Preferably, the center overlapping of axles of the outer cylinder body, inner cylinder body, installation set and screw rod.
Preferably, the center overlapping of axles of the central shaft of the inner cylinder body and corresponding first caching cylinder, the second caching cylinder.
Preferably, the central axis of the baffle and the screw rod.
Preferably, the piston has trapezoid cross section.
The invention has the advantages that：
1. the present invention is indirectly followed by controller alternately the first solenoid valve of control, the closure of second solenoid valve or disconnection
The control first of ring caches the slurry pipeline transport sequence of cylinder and the second caching cylinder, i.e.,：By the material pulp pumping in the first caching cylinder to wall
After trigger, then the slurry in the second caching cylinder is pumped, then repeat to pump, in this way the first caching of cycle push cylinder, the second caching
Slurry in cylinder prevents during making wallboard machine, and slurry interrupts conveying, and influences entire processing progress；
2. inventive piston frame and piston one work is pushed into conveying by the slurry in the first caching cylinder, the second caching cylinder
Pipe prevents slurry accumulation blocking channel in caching cylinder, production is caused to stop.
【Description of the drawings】
Fig. 1 is a schematic diagram of a better embodiment of slurry delivery device of the present invention.
Fig. 2 is a schematic diagram of the first caching cylinder in Fig. 1, the second caching cylinder, piston cylinder, piston.
Fig. 3 is a schematic diagram of oil cylinder in Fig. 2, piston rod, piston shelf, piston.
Fig. 4 is a schematic diagram of the first check valve in Fig. 2, wherein first check valve is closed.
Fig. 5 is a schematic diagram of the first check valve in Fig. 2, wherein first check valve is in open state.
Main element symbol description
| Slurry delivery device 100 | Wallboard machine 200 | Controller 10 |
| Holder 20 | Mixing-filling machine 30 | Pumping mechanism 90 |
| First solenoid valve 40 | Second solenoid valve 50 | Pump structure 60 |
| Delivery pipe 70 | Take out material machine 80 | First solenoid valve 40 |
| Second solenoid valve 50 | Pump structure 60 | Delivery pipe 70 |
| Take out material machine 80 | Actuator 61 | Oil cylinder 62 |
| Piston rod 63 | First caching cylinder 64 | Second caching cylinder 65 |
| First check valve 66 | Second check valve 67 | Feed inlet 641 |
| Piston shelf 68 | Piston 69 | Frame 681 |
| Material leakage frame 682 | Washer 683 | Upper gasket 6831 |
| Sealing ring 6832 | Lower gasket 6833 | Discharge port 6834 |
| Outer cylinder body 661 | Inner cylinder body 662 | Installation set 663 |
| Screw rod 664 | Elastic component 665 | Baffle 666 |
| First connecting flange 667 | Second connecting flange 668 | Upper cap nut 6641 |
| Lower nut 6642 | Transfer tube 669 |
Following specific implementation mode will be further illustrated the present invention in conjunction with above-mentioned attached drawing.
【Specific implementation mode】
It please refers to Fig.1 and Fig. 2, in the better embodiment of the present invention, a slurry delivery device 100, will expect
Slurry is delivered in a wallboard machine 200, and includes a controller 10, a holder 20, a mixing-filling machine 30 and a pumping mechanism 90.
The mixing-filling machine 30 is mounted on the holder 20, and to stir slurry；In addition, the controller 10 is turned on and off
The mixing-filling machine 30.
The pumping mechanism 90 is mounted between the mixing-filling machine 30 and the wallboard machine 200, and includes one the
One solenoid valve 40, a second solenoid valve 50, a pump structure 60, a delivery pipe 70 and one take out material machine 80.First solenoid valve
40 and the second solenoid valve 50 be electrically connected the controller 10.It is tied mounted on the pumping one end of the delivery pipe 70
The lower section of structure 60, the other end are connected to the wallboard machine 200.The pumping material machine 80 is connect with the delivery pipe 70, to by institute
The material pulp pumping in delivery pipe 70 is stated to be turned on and off to control to the wallboard machine 200, and by the controller 10.In this reality
It applies in mode, the pumping material machine 80 is mainly collectively constituted by hydraulic station and electric cabinet, and the controller 10 can open the electricity
Case is controlled, slurry can be sprayed onto the wallboard machine 200 by the hydraulic station under the electric cabinet working condition.
Please also refer to Fig. 3, the pump structure 60 includes two actuators 61, two oil cylinders 62, two-piston bar 63,1
One caching cylinder 64, one second caching cylinder 65, one first check valve 66 and one second check valve 67.In the present embodiment, described
Two actuators 61 are motor.The first caching cylinder 64 and the second caching 65 structure having the same of cylinder, and upper end is set
There is a feed inlet 641 (see Fig. 2), the slurry in the mixing-filling machine 30 falls into described first via the feed inlet 641 and delays
Deposit cylinder 64 and the second caching cylinder 65.Two actuator 61 respectively with first solenoid valve 40, the second solenoid valve
50 electrical connections, and work when corresponding first solenoid valve 40, second solenoid valve 50 are opened.Two oil cylinder 62 is separately connected institute
State two actuators 61 and the two-piston bar 63.It is slow that the two-piston bar 63 is housed in the first caching cylinder 64, second respectively
It deposits in cylinder 65, and free end is respectively equipped with a piston shelf 68 and a piston 69.The piston 69 is mounted on corresponding piston rod
63 end, and be housed in the piston shelf 68.In the present embodiment, the piston 68 has trapezoid cross section.
Please continue to refer to Fig. 1-3, the piston shelf 68 includes a frame 681, a material leakage frame 682 and a washer 683.Institute
It states frame 681 to be set on corresponding piston rod 63, and width is less than corresponding first and caches the caching cylinder 65 of cylinder 64, second
Internal diameter.The material leakage frame 682 is mounted in the frame 681, and the frame 63 is stretched into 63 lower end of the piston rod, and passes through institute
Material leakage frame 682 is stated, the piston 69 is mounted on the end of corresponding piston rod 63, and positioned at the material leakage frame 682 and the pad
Between circle 683.The washer 683 is mounted on the bottom of the frame 681, and outer diameter caches cylinder 64, the with corresponding first
The internal diameter of two caching cylinders 65 is suitable.Further, the washer 683 includes a upper gasket 6831, a sealing ring 6832 and one
Lower gasket 6833；The sealing ring 6832 is clamped between the upper gasket 6831 and the lower gasket 6833.In addition, the pad
Circle 683 offers discharge port 6834, and the piston 69 is to discharge port 6834 described in opening and closing of fault；Preferably, the discharging
The center overlapping of axles of the central shaft and corresponding piston rod 63 of mouth 6834.When the piston 69 is detached from the discharge port 6834, institute
The piston shelf 68 can be dropped out via the discharge port 6834 by stating slurry；When the piston 69 closes the discharge port 6834
When, the slurry can not drop out the piston shelf 68.
Please also refer to Fig. 4 and Fig. 5, first check valve 66 connects the first caching cylinder 64 and the delivery pipe
70, second check valve 67 connects the second caching cylinder 65 and the delivery pipe 70.In the present embodiment, described first
67 structure having the same of check valve 66 and second check valve, and respectively included an outer cylinder body 661, an inner cylinder body 662,
One installation set 663, a screw rod 664, an elastic component 665, a baffle 666, one first connecting flange 667 and one second connecting flange
668.First connecting flange 667 and second connecting flange 668 are respectively sleeved at opposite the two of the outer cylinder body 661
End.
The inner cylinder body 662 is located in the outer cylinder body 661, and is connect with the outer cylinder body 661.Preferably, in described
Cylinder body 662 and the outer cylinder body 661 are of similar shape, and are cylinder；The inner cylinder body 662 and the outer cylinder body
661 central shafts having the same.The installation set 663 be mounted on the inner cylinder body 662 inner wall on, and central shaft with it is described
The center overlapping of axles of inner cylinder body 662.The screw rod 664 is housed in the installation set 663, and both ends are respectively equipped with outside several
Screw thread (not shown), upper cap nut 6641 and lower nut 6642 are mounted on by the external screw thread on the screw rod 664 respectively.It is described
Elastic component 665 is sleeved on the screw rod 664, and is clamped between the upper cap nut 6641 and the installation set 663.The gear
Plate 666 is mounted on the screw rod 664, and positioned at the lower section of the installation set 663 and against the lower nut 6642；The gear
Plate 666 is since the effect of the elastic component 665 is against the bottom of the inner cylinder body 662, and in 665 flexible deformation of the elastic component
When be detached from the inner cylinder body 662.Preferably, the center overlapping of axles of the central shaft of the screw rod 664 and the inner cylinder body 662.
It please refers to Fig.1 and Fig. 2, when assembling, the first connecting flange 667 of first check valve 66 is cached with described first
The lower end of cylinder 64 is fixed together by welding manner, one switching of the second connecting flange 668 connection of first check valve 66
One end of pipe 669, and the delivery pipe 70 is connected to by the transfer tube 669, at this moment, the central shaft of the first caching cylinder 66
With the center overlapping of axles of the outer cylinder body 661.First connecting flange 667 of second check valve 67 caches cylinder with described second
65 lower end is fixed together by welding manner, and the second connecting flange 668 of second check valve 67 connects the conveying
One end of pipe 70, the other end of the delivery pipe 70 are directed at the entrance of the wallboard machine 200.
The preferable occupation mode of the present invention is as follows：The controller 10 opens the mixing-filling machine 30, the mixing-filling
The slurry is stirred in the work of machine 30, and stirred slurry falls into the first caching cylinder 64, the second caching cylinder 65；At this moment,
The controller 10 is closed first solenoid valve 40, disconnects the second solenoid valve 50；When first solenoid valve 40 be closed,
The actuator 61 that is connect with first solenoid valve 40 works, to drive the piston rod 63 in the first caching cylinder 64 to by
The direction movement of nearly first check valve 66, drives corresponding piston 69 to move downward, until the piston 69 with it is described on
Washer 6831, which is in close contact, closes the discharge port 6834；At this moment, the piston rod 63 continues to move downward, the piston 69 and
The piston shelf 68 continues to move down with the piston rod 63, and collective effect pushes down on the slurry, and the slurry exists
It is compressed under pressure effect, when pressure is more than the elastic force of the elastic component 665 of first check valve 66, described the can be pushed
The screw rod 664 of one check valve 66 moves downward, until the baffle 666 is detached from the inner cylinder body 662, to open described first
Check valve 66, at this moment, the piston 69 and the piston shelf 68 can be via the inner cylinder bodies 662 of first check valve 66 by slurry
And the transfer tube 669 is pushed into the input pipe 70；The controller 10 opens the pumping material machine 80, and the pumping material machine 80 will expect
Stock pump send the wallboard machine 200.
When the piston shelf 68 in the first caching cylinder 64 supports the bottom of the first caching cylinder 64, with first electromagnetism
The actuator 61 that valve 40 connects works, to drive the piston rod 63 in the first caching cylinder 64 unidirectional to separate described first
The direction of valve 66 moves, and corresponding piston 69 and piston shelf 68 is driven to move up to the feed inlet 641, and then described first
The elasticity of elastic component 665 of check valve 66 restores that the screw rod 664 is driven to move upwards, and makes described in the baffle 666 closes again
The bottom of inner cylinder body 662；Meanwhile the controller 10 is closed the second solenoid valve 50, disconnects first solenoid valve 40, when
When the second solenoid valve 50 is closed, the actuator 61 being connect with the second solenoid valve 50 works, to drive described second
Piston rod 63 in caching cylinder 65 is moved to close to the direction of second check valve 67, and corresponding piston 69 is driven to transport downwards
It is dynamic, until the piston 69 and the upper gasket 6831 are in close contact and close the discharge port 6834；At this moment, the piston rod 63
Continue to move downward, the piston 69 and the piston shelf 68 continue to move down with the piston rod 63, and collective effect to
It is lower that the slurry, the slurry is pushed to be compressed under pressure, when pressure is more than the elastic component of second check valve 67
When 665 elastic force, the screw rod 664 of second check valve 67 can be pushed to move downward, until the baffle 666 be detached from it is described
Inner cylinder body 662, to open second check valve 67, at this moment, the piston 69 and the piston shelf 69 can be via by slurry
The inner cylinder body 662 of second check valve 67 is pushed into the input pipe 70, and the controller 10 opens the pumping material machine 80, described
Material machine 80 is taken out by wallboard machine 200 described in material pulp pumping.
When the piston shelf 68 in the second caching cylinder 65 supports the bottom of the second caching cylinder 65, with second electromagnetism
The actuator 61 that valve 50 connects works to drive the piston rod 63 in the second caching cylinder 65 unidirectional to separate described second
The direction of valve 67 moves, and corresponding piston 69 and piston shelf 68 is driven to move up to the feed inlet 641, and then described second
The elasticity of elastic component 665 of check valve 67 restores that the screw rod 664 is driven to move upwards, and makes described in the baffle 666 closes again
The bottom of inner cylinder body 662, at this moment, the controller 10 are closed first solenoid valve 40 again, disconnect the second solenoid valve
50, in this way, slurry can be continuously pumped into the wallboard machine 200, save the production time.
Above-mentioned slurry delivery device 100, by controller 10, alternately first solenoid valve 40 of control, second solenoid valve 50 are closed
It closes or disconnects, the control first indirectly recycled caches the slurry pipeline transport sequence that cylinder 64 and second caches cylinder 65, i.e.,：First is delayed
After depositing the material pulp pumping to wallboard machine 200 in cylinder 64, then the slurry in 65 cylinder of the second caching is pumped, then repeats to pump, in this way
Cycle push the first caching cylinder 64, second caches the slurry in cylinder 65, prevents during making wallboard machine 200, slurry interrupts
Conveying, and influence entire processing progress；In addition, caching piston shelf 68 and piston in cylinder 65 by the first caching cylinder 64, second
68 push slurries cause production to stop to the delivery pipe 70 to prevent slurry accumulation from blocking slurry channel in caching cylinder.
Above description is the detailed description for the present invention preferably possible embodiments, but embodiment is not limited to this hair
Bright patent claim, it is all the present invention suggested by technical spirit under completed same changes or modifications change, should all belong to
In the covered the scope of the claims of the present invention.
Claims (7)
1. a kind of slurry delivery device, to by slurry pipeline transport to wallboard machine, the slurry delivery device includes holder and stirs
Mix slip casting machine；The mixing-filling machine is installed on the bracket, and to stir slurry, it is characterised in that：The slurry is defeated
It further includes having controller and pumping mechanism to send device, and the pumping mechanism includes the first solenoid valve, second solenoid valve, pumping knot
Structure, delivery pipe and pumping material machine；The delivery pipe is connected to the pump structure and the wallboard machine, and the pumping material machine connection is described defeated
Pipe is sent, to by the material pulp pumping in delivery pipe to the wallboard machine；
The pump structure includes two actuators, two oil cylinders, two-piston bar, the first caching cylinder, the second caching cylinder, first unidirectional
Valve and the second check valve；First solenoid valve and the second solenoid valve are electrically connected two actuator, two oil
Cylinder is separately connected two actuator and the two-piston bar, and the two-piston bar is housed in the first caching cylinder, institute respectively
The second caching cylinder is stated, and is equipped with piston shelf and piston in end respectively, the piston shelf is set on corresponding piston rod, described
Piston is mounted on corresponding piston rod and is housed in corresponding piston shelf, and the piston has trapezoid cross section；Described first
Check valve one end connects the bottom of the first caching cylinder, and the other end connects the delivery pipe via transfer tube, and described second is single
The bottom of the second caching cylinder is connected to valve one end, the other end connects the delivery pipe；
The controller is controlling closure or the disconnection of first solenoid valve, the second solenoid valve；When first electricity
Magnet valve is closed, and when the second solenoid valve disconnects, connects the actuator of first solenoid valve to drive first caching
The piston rod of cylinder is moved along the direction close to first check valve, and the piston shelf can be with corresponding piston with the piston
Bar is mobile and slurry is pushed into the delivery pipe when first check valve is opened；It is described when first solenoid valve disconnection
When second solenoid valve is closed, the actuator of the second solenoid valve is connected to drive the piston rod edge of the second caching cylinder to lean on
The direction movement of nearly second check valve, the piston shelf can be mobile with corresponding piston rod with the piston and described
Slurry is pushed into the delivery pipe when second check valve is opened；
The piston shelf includes frame, material leakage frame and washer, and the frame is set in corresponding piston rod, the material leakage frame peace
In the frame, the washer is mounted on the bottom of the frame, and the lower end of the two-piston bar is able to stretch into pair
The frame answered, and corresponding material leakage frame can be passed through, the two-piston bar is separately mounted to the end of the two-piston bar, and position
Between corresponding material leakage frame and washer；
First check valve and second check valve have respectively included outer cylinder body, inner cylinder body, installation set, screw rod, elastic component
And baffle；The inner cylinder body is located in the outer cylinder body, and is connect with the outer cylinder body, and the installation set is mounted on the inner casing
In vivo, the screw rod is housed in the installation set, and both ends are equipped with upper cap nut and lower nut, the elastic component resilient clamp
Between the upper cap nut and the installation set, the baffle is mounted on the screw rod, and below the installation set and
Against the lower nut；The baffle closes the bottom of the inner cylinder body, and in the elastic component flexible deformation described in disengaging
Inner cylinder body.
2. slurry delivery device as described in claim 1, it is characterised in that：The washer offers discharge port, the piston
Can be to discharge port described in opening and closing of fault, and when closing the discharge port slurry is pushed together with the piston shelf.
3. slurry delivery device as claimed in claim 1 or 2, it is characterised in that：The washer includes upper gasket, sealing ring
And lower gasket, the sealing ring are clamped between the upper gasket and the lower gasket.
4. slurry delivery device as claimed in claim 3, it is characterised in that：The outer diameter of the washer and corresponding first caching
Cylinder, the internal diameter of the second caching cylinder are suitable.
5. slurry delivery device as described in claim 1, it is characterised in that：The outer cylinder body, inner cylinder body, installation set and screw rod
Center overlapping of axles.
6. slurry delivery device as described in claim 1, it is characterised in that：The central shaft of the inner cylinder body and corresponding first
Cache the center overlapping of axles of cylinder, the second caching cylinder.
7. slurry delivery device as described in claim 1, it is characterised in that：The central shaft of the baffle and the screw rod hangs down
Directly.
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| CN201510414942.9A CN105060233B (en) | 2015-07-15 | 2015-07-15 | A kind of slurry delivery device |
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| CN201510414942.9A CN105060233B (en) | 2015-07-15 | 2015-07-15 | A kind of slurry delivery device |
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| CN105060233B true CN105060233B (en) | 2018-09-21 |
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| CN107780332B (en) * | 2017-11-23 | 2023-08-11 | 中铁成都轨道交通健康管理技术有限公司 | Pressure grouting machine |
| CN108327216A (en) * | 2017-12-29 | 2018-07-27 | 武汉中兴创新材料技术有限公司 | The screw rod protective device and feeder of feeder |
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| CN203031750U (en) * | 2013-01-11 | 2013-07-03 | 刘洪彬 | Composite wallboard production line |
| CN203161469U (en) * | 2013-02-28 | 2013-08-28 | 三一汽车制造有限公司 | Pumping system of mortar pump and mortar pump |
| CN203499633U (en) * | 2013-06-05 | 2014-03-26 | 中国石油化工股份有限公司 | Screw one-way bypass valve |
| CN103590996A (en) * | 2013-11-22 | 2014-02-19 | 中联重科股份有限公司 | Pumping equipment and pumping method |
| CN204778804U (en) * | 2015-07-15 | 2015-11-18 | 广西宏发重工机械有限公司 | Ground paste conveyor |
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| CN105060233A (en) | 2015-11-18 |
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