A kind of flux controllable building increasing material manufacturing print system
Technical field
The present invention relates to building increasing material manufacturing printing device, specially a kind of flux controllable building increasing material manufacturing printing system
System.
Background technique
Currently, having a kind of principle to be similar to FDM principle in building increasing material manufacturing mode, Building wood is squeezed out by spray head
Material, according to the track being previously set, accumulation forms the printing of building layer by layer.In building print procedure, between different structure
Conversion, variation of print speed etc. requirement, it is necessary to spray head in these variations can flow it is controllable.In addition certain in printing
When hole configurations, such as door and window, it is desirable that spray head can automatic start-stop, realize stopping working in a period of time.
Firstly, in current solution, everybody is substantially using by concrete pumping to spray head, at spray head
One hopper is set, the extrusion flow control of spray head is then realized using screw pump etc..In Publication No. CN206678129U
State's patent discloses a kind of building element 3D printing spray head of variable-flow, it includes: rack, caching receiving hopper, stirring rod,
Stirring rod body containing auger and power connected to it described in variable-flow device and shaping equipment, variable-flow device include blanking
Check valve, discharging check valve, plunger pump and the power of connection;The stirring rod is located in caching receiving hopper, with auger body
The power of connection is arranged in the rack above caching receiving hopper, and shaping equipment is private print spray head.Adapting to assistant ingredients
The lower concrete of technical parameter, by improving the mobility of concrete, while adding each component under the agitation of stirring rod
Add agent to stir with concrete, reduces setting time, then through nozzle specially used printing, shorten the print time, completely
Meet the needs of printing building element.
Since the size of building printing is bigger, the either printer of which kind of mode, in order to realize as big as possible beat
Span is printed, the lightweight of printing head is all made every effort to, therefore a complexity and the structure undoubtedly increasing with hopper are set at spray head
The weight for having added spray head increases huge difficulty for realizing that the building printing of more large span is undoubtedly.
Secondly, concrete is different according to the structure of building in print procedure, it is sometimes desirable to the work such as start and stop are carried out, this
When increase the risk that concrete condenses in delivery pipe, ultimately cause the destruction of conveyance conduit, influence the effect of building printing
Fruit.
Summary of the invention
Aiming at the problems existing in the prior art, the present invention provides a kind of flux controllable building increasing material manufacturing printing system
System, structure is simple, and rationally, spray head extrusion output is controllable, and concrete conveyance is non-condensing for design.
The present invention is to be achieved through the following technical solutions:
A kind of flux controllable building increasing material manufacturing print system, including concrete pump be provided with flow divider valve
Printing head;
The flow divider valve includes the valve body to form control inner cavity, is rotatably arranged on rotary spool intracavitary in control,
And it is separately positioned on the spray head discharge port being connected to control inner cavity on valve body, feed inlet and circulation discharge port;
The rotary spool is used to control spray head discharge port and recycles discharge port and control the connection aperture of inner cavity;
The output end of the concrete pump is connected to feed inlet, and input terminal is connected to circulation discharge port.
Preferably, the valve body is in hollow cylinder, and hollow parts form cylindrical body and control inner cavity;Rotary spool is around axis
Line rotation, and it is bonded the side wall and upper bottom surface of control inner cavity;Spray head discharge port, feed inlet and circulation discharge port are separately positioned on
It is connected on the side wall of valve body and with control inner cavity.
Further, the fan-shaped setting of the rotary spool;The circular arc of sector structure is greater than spray head discharge port and circulation discharging
The radian of maximum open in mouthful;Minimum curvature between spray head discharge port and feed inlet is A, between feed inlet and circulation discharge port
Minimum curvature be B, sector structure is capable of the radian of connected component not less than the minimum value in A and B.
Further, the rotary spool is in 90 ° of fan-shaped settings.
Further, the rotary spool is in 180 ° of fan-shaped settings.
Further, the rotary spool is arranged in 180 ° of eccentric segment.
Further, spray head discharge port, feed inlet and circulation discharge port are successively uniformly arranged on the same of control cavity
Semicircle side, spray head discharge port and circulation discharge port are symmetrical arranged along the central axes of the semicircle, and the central axes of the two and Semi round bottom
Side is parallel;Feed inlet is arranged along the central axes of semicircle.
Further, rotary shaft is set on the central axes of the valve body, and rotary spool is fixedly installed on the rotary shaft.
Preferably, the output end of the concrete pump is connected to by transfer pipeline with feed inlet, and input terminal is by following
Endless tube road is connected to circulation discharge port.
Compared with prior art, the invention has the following beneficial technical effects:
A kind of building increasing material manufacturing print system of the present invention realizes circulating for concrete using flow divider valve, from
And it is controllable to can be achieved at the same time flow when spray head squeezes out construction material;Extrusion device is not separately provided, only passes through flow divider valve
Distribution is just exported to input concrete, to significantly mitigate the weight of building increasing material manufacturing printing head, alleviates printing
The load of device can increase substantially the printing span of building increasing material manufacturing device;Whether no matter whether spray head works, i.e., squeeze
Concrete out is made during building increasing material manufacturing by the motor path of concrete, and the conveying that concrete can continue mixes
The solidifying native not residence time in delivery pipe, prevents concrete coagulation.
Further, improved assignment of traffic valve arrangement, so that the rotary spool in flow divider valve uses eccentric segment
Structure greatly reduces the condensation risk in concrete delivery service in delivery pipe.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of system of the present invention.
In figure: concrete pump 1, flow divider valve 2, valve body 21, rotary spool 22, spray head discharge port 23, feed inlet
25, discharge port 24, rotary shaft 26, transfer pipeline 3, circulation line 4 are recycled.
Specific embodiment
Below with reference to specific embodiment, the present invention is described in further detail, it is described be explanation of the invention and
It is not to limit.
Flux controllable building increasing material manufacturing print system of the present invention makes in the circulatory system of a concrete
The printing head and concrete pump 1 for building increasing material manufacturing form a circuit cycle.As shown in Figure 1, at printing head
One flow divider valve 2 is set, and the rotary spool 22 in flow divider valve 2 rotates in valve body 21 around rotary shaft 26, control
The size of spray head discharge port 23, to realize the control of spray head demand volume, extra concrete then passes through circulation discharge port 24
It is back to concrete pump 1.If printing head needs to stop, spray head discharge port is closed in the rotation control of flow divider valve 2
23, then whole concrete carries out reflux cycle by circulation discharge port 24.If spray head needs to be again started up, assignment of traffic
Valve 2 controls 23 size of open printing spray head discharge port according to flow demand.Thereby realize the flow control of printing head.
In this preferred embodiment, as shown in Figure 1, the valve body 21 is in hollow cylinder, hollow parts form cylindrical body control
Inner cavity;Rotary spool 22 is rotated around central axes, and is bonded the side wall and upper bottom surface of control inner cavity;Spray head discharge port 23, charging
Mouth 25 and circulation discharge port 24 are separately positioned on the side wall of valve body 21 and are connected to control inner cavity.
The rotary spool 22 for cooperating valve body 21 in flow divider valve 2 can be sector structure at any angle, sector structure
Circular arc be greater than spray head discharge port 23 and recycle the radian of maximum open in discharge port 24, sector structure is capable of the arc of connected component
Degree is not less than the minimum value in A and B;Wherein, the minimum curvature between spray head discharge port 23 and feed inlet 25 is A, feed inlet 25
Minimum curvature between circulation discharge port 24 is B.
Any one phase of two circular arcs between the angle of sector structure and spray head discharge port 23 and circulation discharge port 24
Whens equal, spray head discharge port 23 and circulation discharge port 24 can be controlled simultaneously simultaneously.
On control cavity, the central axes of the two are in 90 degree of feed inlets 25 for spray head discharge port 23 and the setting of circulation discharge port 24
Spray head discharge port 23 is set and recycles the orthodrome part between discharge port 24.Preferred rotary spool 22 is 90 degree of fan-shaped knots
Structure is easy it is contemplated that concrete viscosity is big, the characteristic that easily condenses in flow divider valve 2 and control valve insertion stroke dead angle,
Increase condensation risk of the concrete at dead angle.
The shortcomings that in order to overcome 90 degree of sector structures, spray head discharge port 23, feed inlet 25 and circulation discharge port 24 are successively equal
The even same semicircle side that control cavity is arranged in, spray head discharge port 23 and circulation discharge port 24 are symmetrical along the central axes of the semicircle
Setting, and the central axes of the two are parallel with semicircle bottom edge.Feed inlet 25 is arranged along the central axes of semicircle.Rotary spool 22 is revised as
180 degree semi-circular structure, but since there are also the rotary shafts 25 of certain size among flow divider valve 2, also easily in 25 He of rotary shaft
The certain dead angle of stroke between rotary spool 22, there are also the condensation risks of concrete.
The consideration of the shortcomings that in order to overcome 180 degree semi-circular structure is further optimized for eccentric segment structure, so that rotary valve
22 section of core forms a simple smoothly plane, further reduced control inner cavity of the concrete in flow divider valve 2
Condense risk.
A kind of flux controllable building increasing material manufacturing print system of the invention, by concrete pump and and is provided with
The printing head of flow divider valve forms the circulatory system, and the printing head for building increasing material manufacturing and concrete pump is made to form one
A circuit cycle.One flow divider valve is set in printing head, flow divider valve rotates around the axis of rotation, linkage control spray head
The size of discharge port and circulation material mouth, to realize the control of printing head flow, extra concrete is then back to concrete
Delivery pump.And it is able to achieve the start and stop of printing head.If printing head needs to stop, spray is closed in flow divider valve rotation control
Head discharge port, then whole concrete carry out reflux cycle;If spray head needs to be again started up, flow divider valve is needed according to flow
Seek control open printing spray head discharge port size;Thereby realize the flow control of printing head.Significantly mitigate building to increase
Material manufactures the weight of printing head, alleviates the load of printing equipment, can increase substantially beating for building increasing material manufacturing device
Print span;No matter whether spray head works, concrete can continue circulate, concrete do not stopped in delivery pipe when
Between, prevent concrete from condensing in delivery pipe.