CN112901437A - 3D prints ultra-high performance concrete and uses delivery pump - Google Patents

Abstract

The invention belongs to the technical field of 3D printing of ultrahigh-performance concrete. A3D printing ultra-high performance concrete conveying pump comprises a pump body, a disc valve, a rotary driving part, a first cylinder body and a second cylinder body which are arranged in the pump body side by side, a pump cylinder piston and a pumping driving part, wherein a disc valve rotary support is arranged in the pump body, a material receiving port is arranged at the upper part of the disc valve, material sucking ports, a first reversing port and a second reversing port are arranged at intervals of 120 degrees in the circumferential direction of the disc valve, the material sucking ports are communicated with the material receiving ports through material sucking pipes, and the first reversing port is communicated with the second reversing port through a reversing pipe; the rotary driving part drives the disc valve to rotate; a delivery pipe is arranged on the pump body; pump cylinder pistons are arranged in the first cylinder body and the second cylinder body; the pumping driving part drives the pump cylinder piston to act in the first cylinder body and the second cylinder body. This application structural design is reasonable, and the environmental protection is high-efficient, can ensure the performance of pump sending, and controls the precision, has improved its practicality and the stability of structure greatly.

Description

3D prints ultra-high performance concrete and uses delivery pump

Technical Field

The invention belongs to the technical field of 3D printing of ultrahigh-performance concrete, and particularly relates to a conveying pump for 3D printing of ultrahigh-performance concrete.

Background

The third industrial revolution marked by additive manufacturing such as 3D printing has advanced the concrete technology to a higher level, and developed into a novel 3D printing concrete technology based on three-dimensional modeling, electromechanical control, information processing, material science and the like. The technology can accurately calculate the consumption of raw materials before construction, can regulate and control the performance and the consumption of the mixture during printing, does not need template support and vibration, is convenient for construction of complex components, and furthest realizes energy conservation, material conservation and optimization of a structure. But as an emerging technology, neither materials nor manufacturing equipment are mature. 3D prints and has higher requirement to the concrete performance, and traditional concrete has been difficult to satisfy, and current theory also can not be fine guides 3D to print design and construction of concrete. For example, 3D printed concrete must have excellent thixotropic properties, ensure sufficient rheological properties for extrusion from a nozzle during printing, be rapidly solidified and hardened in air after printing, and have sufficient volume stability and suitable early strength for bearing the weight of itself and subsequent layers to prevent instability such as excessive cumulative deformation and slump, tilt, etc. The front and back printing layers should have good interface bonding performance and high reference strength to avoid strength attenuation caused by interface transition layers. The ultra-high performance concrete (UHPC) with higher reference strength and excellent durability becomes an ideal choice for 3D printing concrete, but the UHPC adds high-activity micro-powder such as silica fume and the like for obtaining a compact microstructure, adopts a lower water-to-gel ratio for improving the strength, adds more additives for meeting the rheological property requirement, removes coarse aggregates for improving the homogeneity, leads the total amount of cementing materials and the additive consumption to be far higher than that of the conventional concrete, leads the mixture to be more viscous and has poor pumpability, and puts higher requirements on the structure and the performance of a concrete pump.

Conventional concrete pumps typically employ gate valve or S-pipe valve structures. The gate valve pump has lower sealing pressure due to structural limitation, and a Y-shaped pipe is inevitably needed to be connected with a double cylinder body and a conveying pipe of a concrete pump in construction, so that the conveying pressure is reduced. In addition, a horizontal conveying pipe with the length being half of the pumping height needs to be installed in front of the vertical conveying pipe, but due to the fact that the gate plate is sensitive to fluid pressure generated in the vertical direction of concrete, the formed hydraulic resistance limits the conveying height of the gate valve pump. The S-pipe valve pump can overcome the defect of low conveying height of a gate valve pump, but for high-viscosity ultra-high-performance concrete, the S-pipe valve oscillating cylinder cannot move in place due to high viscous resistance, even does not move when the viscosity is high, and the S-pipe valve can swing abnormally when the pressure provided by the constant-pressure pump for the oscillating cylinder is insufficient, so that the pressure of the pumping system for conveying the concrete is insufficient, the working efficiency of the pumping system is reduced, the abrasion of a moving part can be aggravated, and meanwhile, the hydraulic piston type conveying cylinder also has the defects of high power consumption, short service life and the like. Therefore, a novel concrete pump which is reasonable in structure, environment-friendly and efficient and is more suitable for conveying 3D printed ultra-high-performance concrete mixtures is needed to be developed.

Disclosure of Invention

The invention aims to solve the problems and the defects in the prior art, and provides a conveying pump for 3D printing of ultra-high performance concrete, which has the advantages of reasonable structural design, environmental protection, high efficiency, capability of guaranteeing the pumping performance, control accuracy and greatly improved practicability and structural stability.

In order to realize the purpose, the adopted technical scheme is as follows:

A3D prints pump for ultra-high performance concrete, includes:

a pump body;

the rotary support of the disc valve is arranged in the pump body, the upper part of the disc valve is provided with a material receiving port, the circumferential direction of the disc valve is provided with a material sucking port, a first reversing port and a second reversing port at intervals of 120 degrees, the material sucking port is communicated with the material receiving port through a material sucking pipe, and the first reversing port is communicated with the second reversing port through a reversing pipe;

a rotation driving unit for driving the disc valve to rotate;

the first cylinder body and the second cylinder body are arranged in the pump body side by side, a material conveying pipe is arranged on the pump body, and the material conveying pipe, the first cylinder body and the second cylinder body respectively correspond to the first reversing port, the second reversing port and the material suction port;

pump cylinder pistons, which are arranged in the first cylinder body and the second cylinder body; and

and the pumping driving part drives the pump cylinder piston to act in the first cylinder body and the second cylinder body.

According to the delivery pump for 3D printing of ultrahigh-performance concrete disclosed by the invention, preferably, the pumping driving part comprises a power shell, a pumping driving motor and two groups of crank connecting rod units, the driving ends of the two groups of crank connecting rod units are connected with the pumping driving motor, and the pump cylinder pistons in the first cylinder body and the second cylinder body are connected with the action ends of the corresponding crank connecting rod units through piston rods.

According to the present invention, the pump for 3D printing of ultra high performance concrete preferably comprises:

the crank is fixedly connected with an output shaft of the pumping driving motor;

a dowel bar, wherein the first end of the dowel bar is hinged with the crank;

the connecting rod and the swing rod are hinged with the second end part of the dowel bar, and the connecting rod is hinged with the piston rod; and

and the swing rod positioning frame is fixedly arranged on the power shell, and the swing rod is hinged with the swing rod positioning frame.

According to the delivery pump for 3D printing of the ultrahigh-performance concrete, the crank is preferably U-shaped, a first supporting rod of the crank is fixed with an output shaft of the pumping driving motor, and a second supporting rod of the crank is hinged with the power shell through a crank positioning shaft.

According to the delivery pump for 3D printing of ultra-high performance concrete of the present invention, preferably, the outer diameters of the first cylinder and the second cylinder are the same as the outer diameter of the material suction pipe, and the outer diameters of the first cylinder and the second cylinder are larger than the outer diameter of the reversing pipe.

According to the delivery pump for 3D printing of ultrahigh-performance concrete, preferably, the front ends of the first cylinder body and the second cylinder body are both provided with arc segment elbows, the front part of the pump cylinder piston is provided with a material pushing plate connecting rod and a material pushing plate, the material pushing plate connecting rod is hinged with the material pushing plate, the front end of the material pushing plate is an arc surface matched with the circumferential direction of the disc valve, the side wall of the material pushing plate is provided with an arc side wall matched with the arc segment elbows, a linear bearing slide hole is arranged in the pump cylinder piston, the rear end of the material pushing plate connecting rod is in a T shape, and the rear end of the material pushing plate connecting rod is matched with and arranged in the linear bearing slide hole.

According to the delivery pump for 3D printing of ultrahigh-performance concrete, the rear end of the piston rod is preferably connected with the crank connecting rod unit through a guide sliding rod and a guide cylinder, and a linear bearing is arranged between the guide sliding rod and the guide cylinder.

According to the delivery pump for 3D printing of ultrahigh-performance concrete disclosed by the invention, preferably, a damping limit ring is arranged between the guide cylinder and the corresponding first cylinder or second cylinder, the piston rod is slidably arranged in the damping limit ring in a penetrating manner, and the damping limit ring limits and buffers the guide slide rod.

According to the delivery pump for 3D printing of the ultrahigh-performance concrete, preferably, an arc-shaped groove with an included angle of 120 degrees is formed in the disc valve, the arc-shaped groove and the disc valve are concentrically arranged, and a damping limiting pin corresponding to the arc-shaped groove is arranged on the pump body; the material receiving opening is connected with a material receiving pipe, and a sealing bearing is arranged between the material receiving pipe and the material receiving opening.

According to the delivery pump for 3D printing of the ultrahigh-performance concrete, the delivery pump preferably further comprises a lubricating unit and a temperature control unit, wherein the lubricating unit comprises a lubricating oil storage tank and a plurality of lubricating oil pipes, and electromagnetic valves are arranged on the lubricating oil pipes; the temperature control unit comprises a compressor, a condenser, a pump body cooler, a power cooler, a temperature sensor and a controller.

By adopting the technical scheme, the beneficial effects are as follows:

(1) this application replaces gate valve or S pipe valve through the disc valve, can overcome the gate valve to the pumping height of concrete mixture low and S pipe valve pump delivery ultra-high performance concrete the swing that appears when unusual delivery pressure that leads to is not enough, the consumption is big, life hangs down the shortcoming.

(2) This application is connected through material receiving pipe and vacuum mixer discharge gate, and material receiving pipe and disc valve's material receiving mouth sealing bearing's setting within a definite time can prevent water loss, keeps the stability of mixture match ratio, has improved entire system concrete pumping quality greatly.

(3) The setting of the arc wall that sets up and damping spacer pin on this application through the disc valve can prevent the overshoot when the disc valve rotates, eliminates the vibration noise when the two collides with each other.

(4) The setting of T type scraping wings can avoid leaking thick liquid and ensure to discharge the mixture clean in this application concrete pump, has improved the accuracy of cylinder body and disk valve butt joint laminating greatly.

(5) The application also can reduce the noise generated when the material pushing plate collides with the disk valve and prolong the service life of the piston through the arrangement of the damping limiting ring.

(6) The utility model provides a setting of dowel steel and pendulum rod in the pumping drive portion avoids the transport interruption or not smooth that the dead point leads to for first cylinder body and second cylinder body can alternate continuity of operation, have improved pumping drive's smooth and easy nature and practicality greatly.

(7) This application can make vacuum mixer prepare the ultra high performance concrete mixture that satisfies the design requirement through control system to make the concrete pump be in best operating condition and higher efficiency all the time, energy utilization is high and long service life, and defeated material flow control is accurate, is suitable for the 3D who satisfies intelligent construction requirement to print the transport of ultra high performance concrete mixture very much.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention will be briefly described below. Wherein the drawings are only for purposes of illustrating some embodiments of the invention and are not to be construed as limiting the invention to all embodiments thereof.

Fig. 1 is a schematic structural diagram of a 3D printing ultra-high performance concrete delivery pump according to an embodiment of the present invention.

Fig. 2 is a schematic view of the structure in the direction of a-a in fig. 1.

Number in the figure:

310 is a pump body, 311 is a material receiving pipe, 312 is a sealing bearing, 313 is a material conveying pipe;

320 is a disc valve, 321 is a material receiving port, 322 is a first reversing port, 323 is a second reversing port, 324 is a material sucking port, 325 is a material sucking pipe, 326 is a reversing pipe, 327 is a rotary driving part, 328 is an arc-shaped groove, and 329 is a damping limit pin;

330 is a first cylinder body, 331 is a pump cylinder piston, 332 is an arc segment elbow, 333 is a pushing plate connecting rod, 334 is a pushing plate, 335 is a linear bearing slide hole, 336 is a guide slide rod, 337 is a guide cylinder body, 338 is a linear bearing, 339 is a damping limit ring;

340 is a second cylinder body, 341 is a crank, 342 is a dowel bar, 343 is a swing rod positioning frame, 344 is a connecting rod, 345 is a swing rod, 346 is a piston rod, 347 is a crank positioning shaft, 348 is a motor bracket and 349 is a swing rod positioning shaft;

350 is a lubricating oil storage tank, 351 is a lubricating oil pipe and 352 is an electromagnetic valve;

360 is a compressor, 361 is a pump body cooler, 362 is a power cooler, 363 is a temperature sensor;

370 is a power shell, 371 is a pumping driving motor, 372 is a pressure sensor;

a1 is a dust removing device, A2 is a vacuum device, A3 is a stirring cylinder, A4 is a discharge port, A6 is a solid material supply device, A7 is a liquid material supply device, A8 is a stirring structure, and A9 is a stirring motor.

Detailed Description

Illustrative aspects of embodiments of the invention are described more fully hereinafter with reference to the accompanying drawings, in which specific embodiments of the invention are shown. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art.

In the description of the present invention, it should be understood that the terms "first" and "second" are used to describe various elements of the invention, and are not intended to limit any order, quantity, or importance, but rather are used to distinguish one element from another.

It should be noted that when an element is referred to as being "connected," "coupled," or "connected" to another element, it can be directly connected, coupled, or connected, but it is understood that intervening elements may be present therebetween; i.e., positional relationships encompassing both direct and indirect connections.

It should be noted that the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items.

It should be noted that terms indicating orientation or positional relationship such as "upper", "lower", "left", "right", and the like, are used only for indicating relative positional relationship, which is for convenience in describing the present invention, and do not indicate that the device or element must have a specific orientation, be constructed and operated in a specific orientation; when the absolute position of the object to be described is changed, the relative positional relationship may also be changed accordingly.

Referring to fig. 1 and 2, the application discloses a 3D printing ultra-high performance concrete delivery pump, which comprises a pump body 310, a disc valve 320, a rotary driving part 327, a first cylinder body 330 and a second cylinder body 340, a pump cylinder piston 331 and a pumping driving part which are arranged in the pump body 310 side by side, wherein the disc valve 320 is rotatably supported and arranged in the pump body 310, a material receiving port 321 is arranged at the upper part of the disc valve 320, a material suction port 324, a first reversing port 322 and a second reversing port 323 are arranged at an interval of 120 degrees in the circumferential direction of the disc valve 320, the material suction port 324 is communicated with the material receiving port 321 through a material suction pipe 325, and the first reversing port 322 is communicated with the second reversing port 323 through a reversing pipe 326; the rotation driving unit 327 drives the disc valve 320 to rotate, and the rotation driving unit 327 in this embodiment is a servo motor; the pump body 310 is provided with a material conveying pipe 313, and the material conveying pipe 313, the first cylinder 330 and the second cylinder 340 respectively correspond to the first reversing port 322, the second reversing port 323 and the material suction port 324; a pump cylinder piston 331 is provided in each of the first cylinder 330 and the second cylinder 340; the pumping driving unit drives the pump cylinder piston 331 to move in the first cylinder 330 and the second cylinder 340.

An arc-shaped groove 328 with an included angle of 120 degrees is formed in the disc valve 320, the arc-shaped groove 328 and the disc valve 320 are concentrically arranged, and a damping limit pin 329 corresponding to the arc-shaped groove 328 is arranged on the pump body 310; connect material receiving pipe 311 in the connection of material receiving port 321 department, material receiving pipe 311 with be provided with sealed bearing 312 between the material receiving port. The rotary driving part 327 is a servo motor and can drive the disc valve 320 to perform 120-degree back swing rotation around the axis, when one end position is reached, the reversing pipe 326 is communicated with the second cylinder 340 at the rear side and the material conveying pipe 313, so that concrete mixture sucked into the second cylinder 340 in the previous suction and discharge cycle is discharged into the material conveying pipe 313 through the reversing pipe 326, and meanwhile, the material suction pipe 325 is communicated with the first cylinder 330, so that the first cylinder 330 sucks the concrete mixture; similarly, when the disc valve 320 is driven by the servo motor to rotate by 120 °, the material suction pipe 325 is communicated with the second cylinder 340, so that the concrete mixture is sucked into the rear concrete cylinder, meanwhile, the reversing pipe 326 is communicated with the first cylinder 330 and the material conveying pipe 313, so that the mixture in the first cylinder 330 can be discharged into the material conveying pipe 313, and the alternate rotation of the disc valve 320 can complete a suction and discharge cycle on the concrete mixture.

In order to increase the efficiency of sucking and delivering concrete mixture, the outer diameters of the first cylinder 330 and the second cylinder 340 are the same as the outer diameter of the suction pipe 325, and the outer diameters of the first cylinder 330 and the second cylinder 340 are larger than the outer diameter of the reversing pipe 326. Further, in order to ensure that the materials in the first cylinder 330 and the second cylinder 340 are discharged completely and are matched tightly in the processes of material suction and material discharge, and the efficiency of material suction and material discharge is improved, the front ends of the first cylinder 330 and the second cylinder 340 of the present application are both provided with arc segment elbows 332 which are correspondingly attached to the outer walls of the disc valves 320, the front part of the pump cylinder piston 331 is provided with a material pushing plate connecting rod 333 and a material pushing plate 334, the material pushing plate connecting rod 333 is hinged to the material pushing plate 334, the front end of the material pushing plate 334 is an arc surface matched with the circumferential direction of the disc valves 320, the side wall of the material pushing plate 334 is provided with an arc side wall matched with the arc segment elbows, when material discharge is performed, the material pushing plate 334 is attached to the outer walls of the disc valves 320, so that the materials in the first cylinder 330 and the second cylinder 340 are discharged completely, the pump cylinder piston 331 is internally provided with linear bearing slide holes 335, the rear end of the ejector plate connecting rod 333 is T-shaped, and the rear end of the ejector plate connecting rod 333 is arranged in the linear bearing sliding hole 335 in a matching manner.

The material pushing plate is connected with the T-shaped material pushing plate connecting rod through a bearing, the material pushing plate can horizontally rotate at a certain angle around a shaft, the opening of the horizontal direction of the center of a piston of the pump cylinder faces to a linear bearing sliding hole of the disc valve, the T-shaped material pushing plate connecting rod can horizontally slide in the linear bearing sliding hole, the T-shaped material pushing plate connecting rod and the material pushing plate can adjust the horizontal position along with the cross section shape of the concrete cylinder, two contact surfaces can be tightly attached when the material pushing plate is close to the disc valve, and slurry leakage and incomplete mixture discharge are avoided.

The rear end of the piston rod 346 is connected with the crank link unit through a guide sliding rod 336 and a guide cylinder 337, and a linear bearing 338 is arranged between the guide sliding rod 336 and the guide cylinder 337. A damping limiting ring 339 is arranged between the guide cylinder 337 and the corresponding first cylinder 330 or second cylinder 340, the piston rod 346 is slidably inserted into the damping limiting ring 339, and the damping limiting ring 339 limits and buffers the guide slide rod 337. In operation, the piston rod 346 connected to the pump cylinder piston 331 is connected to the guide slide bar 336 through the damping stop collar 339, and the guide slide bar 336 is in contact with the linear bearing 338 and forms a sliding pair. The damping limiting ring 339 is arranged to reduce noise generated when the stoking plate 334 collides with the disc valve 320.

The pumping driving part comprises a power shell 370, a pumping driving motor 371 and two groups of crank connecting rod units, the driving ends of the two groups of crank connecting rod units are connected with the pumping driving motor 371, and the pump cylinder pistons 331 in the first cylinder 330 and the second cylinder 340 are connected with the action ends of the corresponding crank connecting rod units through piston rods 346. The crank connecting rod unit comprises a crank 341, a dowel bar 342 and a swing rod positioning frame 343, and the crank 341 is fixedly connected with an output shaft of the pumping driving motor 371; a first end of the dowel 342 is hinged with the crank 341; a connecting rod 344 and a swinging rod 345 which are hinged with the second end part of the dowel bar 342, wherein the connecting rod 344 is hinged with the piston rod 346; the swing link positioning rack 343 is fixedly arranged on the power housing 370, and the swing link 345 is hinged with the swing link positioning rack 343. Further, the crank 341 in this embodiment is U-shaped, a first rod of the crank 341 is fixed to the output shaft of the pumping driving motor 371, a second rod of the crank 341 is hinged to the power housing 370 through a crank positioning shaft 347, and the force transmission rod 342 is hinged to the middle of the crank 341.

In order to avoid the dead point phenomenon generated when a slide block in a crank connecting rod unit reaches a limit position, if a material pushing plate is in contact with a disc valve and a piston of a pump cylinder is in contact with a damping limiting ring at the same time, the load is overlarge due to collinear of three hinge pairs and the pumping operation is stopped due to drive failure, a force transmission rod and a swing rod are added in the crank connecting rod unit to form a crank connecting rod mechanism without the dead point, each crank connecting rod mechanism is driven by a same main pumping driving motor to form two independent and cooperatively operated crank connecting rod driving devices, each crank connecting rod unit is formed by connecting a guide slide rod and a connecting rod through a bearing to form a hinge pair, the connecting rod, the force transmission rod and the swing rod are connected through a bearing to form a hinge pair, the force transmission rod and a crank are connected through a bearing to form a hinge pair, and the swing rod is connected with. In order to ensure that the first cylinder body and the second cylinder body can synchronously suck and discharge concrete mixtures, two groups of cranks matched with the two cylinder bodies are symmetrically arranged on two sides of the pumping driving motor and are always coplanar by taking the common axle center of the pumping driving motor and the crank positioning shaft as a symmetry axis. The pumping driving motor is fixed on a motor support which is respectively connected with the power shell and the pump body, the swing rod positioning shaft is fixed on a swing rod positioning frame which is respectively connected with the power shell and the pump body, the other crank limb fixedly connected with the pumping driving motor is connected on the crank positioning shaft through a bearing, the crank positioning shaft is fixed on the power shell, and the power shell can be fixedly connected on a host machine support. When the crank fixed with the rotating shaft of the pumping driving motor rotates around the shaft, one end of the dowel bar hinged with the crank is driven to rotate around the rotating shaft of the pumping driving motor, the motion of the other end of the dowel bar, which is hinged with the connecting rod and the swing rod together, is driven, because the swing rod can only do swing motion around the swing rod positioning shaft, the connecting rod can be driven to do swing motion, the connecting rod drives the guide slide rod to do horizontal reciprocating motion through the hinge, so that the concrete pump cylinders finish the action of sucking and discharging materials, and the two groups of crank-connecting rod driving devices can drive the two groups of concrete pump cylinders to simultaneously finish a sucking and discharging material circulation under.

The lubricating device further comprises a lubricating unit and a temperature control unit, wherein the lubricating unit comprises a lubricating oil storage tank 350 and a plurality of lubricating oil pipes 351, and electromagnetic valves 352 are arranged on the lubricating oil pipes; the temperature control unit comprises a compressor 360, a condenser, a pump body cooler 361, a power cooler 362, a temperature sensor 363 and a controller.

The lubricating unit in this embodiment is composed of a lubricating oil reservoir, a lubricating oil pipe, and the like. The lubricating oil storage tank is arranged above the outside of the pump body and is connected with a lubricating oil pipe through an electromagnetic valve, the lubricating oil pipe is respectively connected with sliding assemblies such as a valve gap, a first cylinder body, a second cylinder body and a guide cylinder body through a plurality of pipelines, and the electromagnetic valve is arranged at the end of each pipeline to control the time and the quantity of oil supply. The arrangement of the lubricating system can enable the pump body to be in the best working state all the time, save energy and prolong the service life of the pump body.

The temperature control unit system comprises a cooling device, a temperature sensor, a pump body cooler, a power cooler and the like. The cooling device is arranged above the pump body, the refrigeration device integrated with components such as a compressor, a condenser and the like is respectively connected with the pump body cooler and the power cooler through pipelines, the pump body cooler is arranged in the pump body, the power cooler is arranged in the power shell and is an evaporator consisting of capillary tubes, but the pump body cooler is immersed in a water bath box arranged in the pump body and exchanges heat through the water bath box, and the power cooler exchanges heat by a fan arranged in the power shell. The temperature sensors are arranged at different positions in the pump body and the power shell, and the temperature in the valve device, the concrete pump and the power system can be accurately regulated and controlled by the temperature controller integrated in the controller, so that the valve device, the concrete pump and the power system are always in a safe state and keep higher working efficiency.

The system can also be provided with a control system, and particularly comprises a microcomputer, a controller, a temperature sensor, various switches, electromagnetic valves, sensors and the like which have control effects on the vacuum stirrer, the rotary driving motor, the pumping driving motor, the lubricating control unit and the temperature control unit. Vacuum degree instrument and solenoid valve, solid material feeding device's measuring apparatu, liquid material feeding device's flow meter, agitator motor's gear change appearance among the vacuum mixer are connected with the controller through the data line to transmit the signal that acquires for the controller, the controller is through conversion and analysis to the signal that acquires, realizes the accurate control to vacuum degree, stirring speed, feed volume and feed rate etc. among the vacuum mixer, prepares out the ultra high performance concrete mix that satisfies the design requirement. The pressure sensor arranged in the material conveying pipe, the temperature sensor arranged in the pump body and the power shell and the like are connected with the controller, the controller is connected with the microcomputer, the microcomputer can display the difference between the target value and the feedback value in real time, and the control system can realize accurate control of the feeding speed of the vacuum stirrer, the pumping speed and the power rotating speed of the pump body, the oil supply amount of the lubricating unit, the refrigerating speed of the temperature control unit and the like through data analysis.

While the preferred embodiments for carrying out the invention have been described in detail, it should be understood that they have been presented by way of example only, and not limitation as to the scope, applicability, or configuration of the invention in any way. The scope of the invention is defined by the appended claims and equivalents thereof. Many modifications may be made to the foregoing embodiments by those skilled in the art, which modifications are within the scope of the present invention.

Claims (10)

1. The utility model provides a 3D prints ultra-high performance concrete and uses delivery pump which characterized in that includes:

a pump body;

the rotary support of the disc valve is arranged in the pump body, the upper part of the disc valve is provided with a material receiving port, the circumferential direction of the disc valve is provided with a material sucking port, a first reversing port and a second reversing port at intervals of 120 degrees, the material sucking port is communicated with the material receiving port through a material sucking pipe, and the first reversing port is communicated with the second reversing port through a reversing pipe;

a rotation driving unit for driving the disc valve to rotate;

the first cylinder body and the second cylinder body are arranged in the pump body side by side, a material conveying pipe is arranged on the pump body, and the material conveying pipe, the first cylinder body and the second cylinder body respectively correspond to the first reversing port, the second reversing port and the material suction port;

pump cylinder pistons, which are arranged in the first cylinder body and the second cylinder body; and

and the pumping driving part drives the pump cylinder piston to act in the first cylinder body and the second cylinder body.

2. The 3D printing ultra-high performance concrete delivery pump according to claim 1, wherein the pumping driving part comprises a power shell, a pumping driving motor and two groups of crank connecting rod units, driving ends of the two groups of crank connecting rod units are connected with the pumping driving motor, and pump cylinder pistons in the first cylinder body and the second cylinder body are connected with action ends of the corresponding crank connecting rod units through piston rods.

3. The 3D-printing ultra-high performance concrete delivery pump according to claim 2, wherein the crank link unit comprises:

the crank is fixedly connected with an output shaft of the pumping driving motor;

a dowel bar, wherein the first end of the dowel bar is hinged with the crank;

the connecting rod and the swing rod are hinged with the second end part of the dowel bar, and the connecting rod is hinged with the piston rod; and

and the swing rod positioning frame is fixedly arranged on the power shell, and the swing rod is hinged with the swing rod positioning frame.

4. The 3D printing ultra-high performance concrete delivery pump as claimed in claim 3, wherein the crank is U-shaped, a first support rod of the crank is fixed with an output shaft of the pumping driving motor, and a second support rod of the crank is hinged with the power shell through a crank positioning shaft.

5. The 3D printing ultra-high performance concrete delivery pump according to claim 1, wherein the outer diameters of the first cylinder and the second cylinder are the same as the outer diameter of the suction pipe, and the outer diameters of the first cylinder and the second cylinder are larger than the outer diameter of the reversing pipe.

6. The 3D printing ultra-high performance concrete conveying pump as claimed in claim 5, wherein the front ends of the first cylinder body and the second cylinder body are both provided with arc segment elbows, the front part of the pump cylinder piston is provided with a pushing plate connecting rod and a pushing plate, the pushing plate connecting rod is hinged with the pushing plate, the front end of the pushing plate is an arc surface matched with the circumferential direction of the disc valve, the side wall of the pushing plate is provided with an arc-shaped side wall matched with the arc segment elbows, a linear bearing slide hole is arranged in the pump cylinder piston, the rear end of the pushing plate connecting rod is T-shaped, and the rear end of the pushing plate connecting rod is matched with and arranged in the linear bearing slide hole.

7. The 3D printing ultra-high performance concrete delivery pump according to any one of claims 2 to 6, wherein the rear end of the piston rod is connected with the crank connecting rod unit through a guide slide rod and a guide cylinder, and a linear bearing is arranged between the guide slide rod and the guide cylinder.

8. The 3D printing ultra-high performance concrete delivery pump according to claim 7, wherein a damping limiting ring is arranged between the guide cylinder and the corresponding first cylinder or second cylinder, the piston rod is slidably arranged in the damping limiting ring in a penetrating manner, and the damping limiting ring limits and buffers the guide slide rod.

9. The 3D printing ultra-high performance concrete delivery pump according to claim 1, wherein an arc-shaped groove with an included angle of 120 degrees is formed in the disc valve, the arc-shaped groove and the disc valve are concentrically arranged, and a damping limiting pin corresponding to the arc-shaped groove is arranged on the pump body; the material receiving opening is connected with a material receiving pipe, and a sealing bearing is arranged between the material receiving pipe and the material receiving opening.

10. The delivery pump for 3D printing of ultra-high performance concrete according to claim 1, further comprising a lubrication unit and a temperature control unit, wherein the lubrication unit comprises a lubrication oil storage tank and a plurality of lubrication oil pipes, and electromagnetic valves are arranged on the lubrication oil pipes; the temperature control unit comprises a compressor, a condenser, a pump body cooler, a power cooler, a temperature sensor and a controller.

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