CN114508236B - A add system and wet spraying machine for wet spraying machine - Google Patents
A add system and wet spraying machine for wet spraying machine Download PDFInfo
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- CN114508236B CN114508236B CN202210167921.1A CN202210167921A CN114508236B CN 114508236 B CN114508236 B CN 114508236B CN 202210167921 A CN202210167921 A CN 202210167921A CN 114508236 B CN114508236 B CN 114508236B
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- 238000005507 spraying Methods 0.000 title claims abstract description 24
- 239000000654 additive Substances 0.000 claims abstract description 269
- 230000000996 additive effect Effects 0.000 claims abstract description 257
- 239000004567 concrete Substances 0.000 claims abstract description 189
- 238000005086 pumping Methods 0.000 claims abstract description 92
- 238000006073 displacement reaction Methods 0.000 claims description 22
- 239000004568 cement Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 11
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 230000001276 controlling effect Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 3
- 238000005422 blasting Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 19
- 238000010586 diagram Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000003860 storage Methods 0.000 description 8
- 238000004590 computer program Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 4
- 239000011378 shotcrete Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000004422 calculation algorithm Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/0404—Proportioning
- B28C7/0418—Proportioning control systems therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/04—Supplying or proportioning the ingredients
- B28C7/0481—Plant for proportioning, supplying or batching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C9/00—General arrangement or layout of plant
- B28C9/02—General arrangement or layout of plant for producing mixtures of clay or cement with other materials
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/04—Devices for both conveying and distributing
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Automation & Control Theory (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention relates to the technical field of engineering machinery, and discloses an adding system for a wet spraying machine and the wet spraying machine. The adding system comprises: a first additive tank for storing a first additive; a first additive delivery pipe connected to the first additive tank and the boom apparatus, respectively, for delivering the first additive to the end of the boom apparatus such that the first additive is mixed with the concrete at the end; a first additive pump for pumping the pressurized first additive into the first additive delivery tube; a second additive tank for storing a second additive; a second additive delivery pipe connected to the second additive tank and the hopper of the pumping device, respectively, for delivering the second additive to the hopper so that the second additive is mixed with the concrete at the hopper; and a second additive pump for pumping the pressurized second additive into the second additive delivery tube. In this way, the filling of a plurality of additives with a plurality of different filling openings can be achieved.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to an adding system for a wet spraying machine and the wet spraying machine.
Background
The wet spraying machine is a mechanical device which is provided with a pumping device, an accelerator adding device, a compressed air device and a boom device on a movable chassis at the same time and sprays concrete mixture to a working surface. Accelerator is one of the additives that can be added to concrete and is a chemical substance used to improve the performance of concrete. The existing wet spraying machine generally uses a single-component additive, the additive is generally mixed with concrete at a spray head of the wet spraying machine, and the additive is used for accelerating the solidification speed of sprayed concrete and improving the early strength of the sprayed concrete. With the continuous and deep development of green construction, the requirements on early strength and final setting strength of concrete are higher and higher, and the rebound rate of the concrete is required to be lower and better, so that the current single-component additive cannot meet the requirements.
Disclosure of Invention
In order to overcome the defects in the prior art, the embodiment of the invention provides an adding system for a wet spraying machine and the wet spraying machine.
To achieve the above object, a first aspect of the present invention provides an addition system for a wet spraying machine, the wet spraying machine comprising:
the pumping device is used for pumping the pressurized concrete into the concrete conveying pipe and is provided with a hopper;
the tail end of the arm support device is provided with a nozzle;
the concrete conveying pipe is respectively connected with the pumping device and the arm support device and is used for conveying concrete to the tail end of the arm support device;
the adding system comprises:
a first additive tank for storing a first additive;
a first additive delivery pipe connected to the first additive tank and the boom apparatus, respectively, for delivering the first additive to the end of the boom apparatus such that the first additive is mixed with the concrete at the end;
a first additive pump in communication with the first additive delivery tube for drawing the first additive from the first additive tank and pumping the pressurized first additive into the first additive delivery tube;
a second additive tank for storing a second additive;
a second additive delivery pipe connected to the second additive tank and the hopper, respectively, for delivering the second additive into the hopper such that the second additive is mixed with the concrete at the hopper;
a second additive pump in communication with the second additive delivery tube for drawing the second additive from the second additive tank and pumping the pressurized second additive into the second additive delivery tube;
the additive, concrete and high pressure air are sprayed from the nozzle after mixing at the end, the additive comprising a first additive and/or a second additive.
In the embodiment of the invention, the adding system further comprises:
the first speed regulation valve group is used for regulating the discharge capacity of the first additive pump so as to regulate the addition amount of the first additive;
a control device configured to:
determining the pumping speed of the pumping device to the concrete (namely the pumping quantity of the concrete in unit time) in a preset time period;
determining the displacement of the concrete according to the preset time period, the pumping speed and the sum;
determining a first addition amount of a first additive according to the displacement of the concrete;
the first valve bank is controlled to determine the displacement of the first additive pump based on the first amount of additive.
In the embodiment of the invention, the adding system further comprises:
the material level sensor is arranged in the hopper and used for detecting the height of concrete in the hopper;
the second speed regulation valve group is used for regulating the discharge capacity of the second additive pump so as to regulate the addition amount of the second additive;
the control device is further configured to:
acquiring the height variation of the concrete in the hopper in a preset time period;
determining the pumping speed of the concrete;
determining the addition amount of the concrete according to the height variation and the pumping speed;
determining the mixing rate, wherein the mixing rate is the mass percentage of the additive to cement in the concrete;
determining a second addition amount of the second additive according to the addition amount, the doping amount ratio and the mass fraction of the cement;
and controlling a second speed regulating valve group according to the second additive amount to determine the displacement of the second additive pump.
In an embodiment of the invention, the control device is further configured to:
determining a first volume of concrete in the hopper at a first time according to the height of the concrete in the hopper at the first time;
determining a second volume of concrete in the hopper at a second time according to the height of the concrete in the hopper at the second time;
the addition amount of concrete m= (V2-V1) ρ+p (T2-T1),
t1 is the first moment, T2 is the second moment, V1 is the first volume, V2 is the second volume, ρ is the density of the concrete, and P is the pumping speed of the concrete.
In the embodiment of the invention, the second addition amount is the product of the addition amount of the concrete, the mass fraction of the cement and the doping amount ratio.
In an embodiment of the present invention, determining the doping ratio includes:
user settings are received to determine the doping rate.
In an embodiment of the invention, determining the pumping speed of the concrete comprises:
the pumping speed is determined according to the number of commutations of the pumping device.
In an embodiment of the invention, the pumping device comprises a concrete cylinder for sucking material, and the adding system further comprises:
and a third additive delivery pipe connected to the concrete cylinder for delivering the third additive to the concrete cylinder so that the third additive is mixed with the concrete at the concrete cylinder.
In an embodiment of the invention, the first additive, the second additive and the third additive are all chemicals that improve the performance of the concrete.
In an embodiment of the invention, the filler of the second additive delivery pipe is provided with a one-way valve for preventing concrete from flowing backwards into the second additive delivery pipe.
In a second aspect, the present invention provides a wet spraying machine comprising:
the pumping device is used for pumping the pressurized concrete into the concrete conveying pipe and is provided with a hopper;
the tail end of the arm support device is provided with a nozzle;
the concrete conveying pipe is respectively connected with the pumping device and the arm support device and is used for conveying concrete to the tail end of the arm support device; and
the addition system for a wet spraying machine.
Since chemical reactions are easy to take place between different types of additives to affect the additive effect of the additives, a plurality of (at least two) sets of additive adding systems are arranged in the embodiment of the invention to realize independent addition of the different types of additives. In the embodiment of the invention, a plurality of different filling positions are further arranged, specifically, the first additive is mixed with the concrete at the tail end of the arm support device, so that the adding amount of the first additive can be determined according to the displacement of the concrete. In addition, the second additive is mixed with the concrete at the hopper of the pumping device, so that the addition amount of the second additive can be determined according to the addition amount of the concrete. Thus, the performance of the concrete is improved through various additives, the rebound rate of the concrete is reduced, the strength of the concrete is increased, and the green construction is realized.
Compared with the method for controlling the additive amount by monitoring the rebound rate of concrete, the monitoring mode has higher implementation difficulty in the actual use process, the relation between the additive amount and the rebound rate is not a linear relation, and the scheme for adjusting the additive amount in real time through the rebound rate is difficult to realize. In the implementation of the invention, the addition amount of the second additive can be determined according to the addition amount of the concrete, so that the method is easy to realize in the actual use process, and can ensure better injection quality and lower rebound rate.
Compared with the additive, the additive is added in the concrete pipeline, and the internal resistance of the concrete pipeline is 2-4 Mpa during pumping, so that the outlet pressure of the conventional additive pump is only about 1Mpa, and the additive is difficult to add. In the embodiment of the invention, the filling position of the second additive is arranged at the hopper of the pumping device, and the filling difficulty of the second additive is greatly reduced because the pressure at the hopper is at a lower level.
Drawings
The accompanying drawings are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain, without limitation, the embodiments of the invention. In the drawings:
FIG. 1 schematically illustrates a schematic view of a wet sprayer and an addition system according to an embodiment of the invention;
FIG. 2 schematically illustrates one of the schematic diagrams of a pumping device according to an embodiment of the present invention;
fig. 3 schematically shows a second schematic view of a pumping device according to an embodiment of the invention.
Description of the reference numerals
10-pumping means; 11-concrete delivery pipe;
12-a hopper; 13-the end of the boom apparatus;
14-a first additive tank; 15-a first additive delivery tube;
16-a first additive pump; 17-a second additive tank;
18-a second additive delivery tube; 19-a second additive pump;
20-a location of addition of a second additive; 21-a level sensor;
22-concrete cylinders; 23-high pressure air.
Detailed Description
The following describes the detailed implementation of the embodiments of the present invention with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
In the present embodiment, if directional indications (such as up, down, left, right, front, and rear … …) are included, the directional indications are merely used to explain the relative positional relationship, movement, and the like between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the protection scope of the present application.
FIG. 1 schematically illustrates a schematic view of a wet sprayer and an addition system according to an embodiment of the invention. As shown in fig. 1, the wet spraying machine includes:
a pumping device 10 for pumping the pressurized concrete into a concrete delivery pipe 11, the pumping device 10 being provided with a hopper 12;
the tail end 13 of the arm support device is provided with a nozzle;
a concrete delivery pipe 11 connected with the pumping device 10 and the arm support device respectively, and used for delivering concrete to the tail end 13 of the arm support device;
referring to fig. 1, in an embodiment of the present invention, there is provided an adding system including:
a first additive tank 14 for storing a first additive;
a first additive delivery pipe 15 connected to the first additive tank 14 and the boom apparatus, respectively, for delivering the first additive to the end 13 of the boom apparatus such that the first additive is mixed with the concrete at the end 13 of the boom apparatus;
a first additive pump 16, which is in communication with the first additive delivery pipe 15, for pumping the first additive from the first additive tank 14 and pumping the pressurized first additive into the first additive delivery pipe 15;
a second additive tank 17 for storing a second additive;
a second additive delivery pipe 18 connected to the second additive tank 17 and the hopper 12, respectively, for delivering the second additive into the hopper 12 so that the second additive is mixed with the concrete at the hopper 12;
a second additive pump 19 communicating with the second additive delivery pipe 18 for drawing the second additive from the second additive tank 17 and pumping the pressurized second additive into the second additive delivery pipe 18;
the additive, concrete and high pressure air are sprayed out of the nozzle after mixing at the end 13 of the boom apparatus, the additive comprising a first additive and/or a second additive.
The wet spraying machine is mechanical equipment which is provided with a pumping device, an accelerator adding device, a compressed air device and a boom device on a movable chassis at the same time and sprays concrete mixture to a working surface, and is used for lining and supporting the surfaces of structures such as rocks, brick walls, reinforcing steel bar structures, wooden templates and the like. The accelerator is one of the additives. The additive may be added to concrete and is a chemical substance used to improve the properties of the concrete. The pumping device 10 is understood to be a device consisting of parts of a concrete hopper 12, a distribution valve, a concrete cylinder 22, a washing tank, a propulsion device and control elements.
Referring to fig. 1, in a pumping device 10, concrete is pumped to a boom device end 13 through a concrete pipe 11 after the concrete cylinder pressurizes the concrete. The first additive pump 16 pumps the first additive from the first additive tank 14, through the first additive delivery pipe 15 under pressure, where the first additive is mixed with the concrete at the end 13 of the boom apparatus. The first additive can be mixed with concrete at the spray head of the arm support device to accelerate the solidification speed of sprayed concrete and improve the early strength of the sprayed concrete. The mixing amount is understood to be the mass percentage of the additive to the cement in the concrete. For the first additive, the mixing rate can be automatically controlled by the displacement of the concrete.
The present invention may be implemented to provide a multi-component additive for a wet-jet. Referring to fig. 1, a two-component additive system is taken as an example, and in addition to the addition of the first additive, a second additive tank 17, a second additive delivery pipe 18, a second additive pump 19 and a second additive filling location 20 are provided. Fig. 2 schematically shows one of the schematic diagrams of the pumping device according to an embodiment of the invention, and can be seen in fig. 2, where a second additive filling location 20 is indicated in fig. 2, the second additive filling location 20 being at the hopper 12 of the pumping device 10. Referring to fig. 1, the second additive is stored in a second additive tank 17, and a second additive pump 19 pumps the second additive from the second additive tank 17 and pumps the pressurized second additive into a second additive delivery pipe 18, and the second additive is mixed with concrete into a hopper 12 of a pumping device 10, so that the addition of the second additive is achieved. The addition amount of the second additive may be determined according to the addition amount of the concrete. The concrete with the two-component additive is sprayed out from a nozzle at the tail end 13 of the arm support device after the tail end 13 of the arm support device is mixed with high-pressure air 23.
Since chemical reactions are easy to take place between different types of additives to affect the additive effect of the additives, a plurality of (at least two) sets of additive adding systems are arranged in the embodiment of the invention to realize independent addition of the different types of additives. In an embodiment of the invention, a plurality of different filling positions are also provided, in particular, the first additive is mixed with the concrete at the end 13 of the boom device, so that the amount of the first additive can be determined according to the displacement of the concrete. In addition, the second additive is mixed with the concrete at the hopper 12 of the pumping device 10, so that the addition amount of the second additive can be determined according to the addition amount of the concrete. Thus, the performance of the concrete is improved through various additives, the rebound rate of the concrete is reduced, the strength of the concrete is increased, and the green construction is realized.
Compared with the method for controlling the additive amount by monitoring the rebound rate of concrete, the monitoring mode has higher implementation difficulty in the actual use process, the relation between the additive amount and the rebound rate is not a linear relation, and the scheme for adjusting the additive amount in real time through the rebound rate is difficult to realize. In the implementation of the invention, the addition amount of the second additive can be determined according to the addition amount of the concrete, so that the method is easy to realize in the actual use process, and can ensure better injection quality and lower rebound rate.
Compared with the additive, the additive is added in the concrete pipeline, and the internal resistance of the concrete pipeline is 2-4 Mpa during pumping, so that the outlet pressure of the conventional additive pump is only about 1Mpa, and the additive is difficult to add. Whereas in the embodiment of the invention the second additive filling location 20 is provided at the hopper 12 of the pumping device 10, the difficulty of filling the second additive is greatly reduced, since the pressure at the hopper 12 is at a lower level.
In the embodiment of the invention, the adding system further comprises:
the first speed regulation valve group is used for regulating the discharge capacity of the first additive pump 16, so as to regulate the addition amount of the first additive;
a control device configured to:
determining a pumping speed of the pumping device 10 to the concrete (i.e., a pumping amount of the concrete per unit time) within a preset period of time;
determining the displacement of the concrete according to the preset time period, the pumping speed and the sum;
determining a first addition amount of a first additive according to the displacement of the concrete;
the first valve bank is controlled to determine the displacement of the first additive pump based on the first amount of additive.
Referring to fig. 1, since the addition location of the first additive is provided at the end 13 of the boom apparatus, the first addition amount of the first additive may be determined by the displacement of the concrete, which may be understood as the amount of concrete pumped by the pumping apparatus 10 during a preset period of time. The displacement of the concrete and the addition amount of the first additive are kept at a certain proportion, the performance of the concrete is improved, the rebound is reduced, the strength of the concrete is increased, and the green construction is realized.
In the embodiment of the invention, the adding system further comprises:
a level sensor 21 provided in the hopper 12 for detecting the height of the concrete in the hopper 12;
the second speed regulation valve group is used for regulating the discharge capacity of the second additive pump 19, so as to regulate the addition amount of the second additive;
the control device is further configured to:
acquiring the height variation of the concrete in the hopper 12 in a preset time period;
determining the pumping speed of the concrete;
determining the addition amount of the concrete according to the height variation and the pumping speed;
determining the mixing rate, wherein the mixing rate is the mass percentage of the additive to cement in the concrete;
determining a second addition amount of the second additive according to the addition amount, the doping amount ratio and the mass fraction of the cement;
the second valve group is controlled to determine the displacement of the second additive pump 19 according to the second addition amount.
Fig. 3 schematically shows a second schematic view of a pumping device according to an embodiment of the invention, see fig. 3, fig. 3 schematically showing the position of the level sensor 21. A level sensor is a set of devices consisting of ultrasonic sensors or other sensors that can detect the level of a material. The material level detection function is added through the material level sensor, the material level sensor is more suitable for the technical scheme of filling the additive into the hopper 12, and the addition amount of the second additive is more accurate.
It should be noted that, in addition to using the speed valve group to adjust the discharge amount of the additive pump, the addition amount of the additive may be adjusted by other means. The use of a speed valve set to regulate the displacement of the additive pump is one embodiment, but is not limited thereto. For example, two ways of speed regulation of the additive pump can be adopted, namely, a speed regulation valve is used for hydraulic control speed regulation, and the additive pump is driven by a motor; secondly, a frequency converter is used for electrically controlling speed regulation, and the method is characterized in that an additive pump is driven by a motor; both of which fall within the scope of the present invention.
In an embodiment of the invention, the control device is further configured to:
determining a first volume of concrete in the first time hopper 12 based on the height of the concrete in the first time hopper 12;
determining a second volume of concrete in the second time hopper 12 based on the height of the concrete in the second time hopper 12;
the addition amount of concrete m= (V2-V1) ρ+p (T2-T1),
t1 is the first moment, T2 is the second moment, V1 is the first volume, V2 is the second volume, ρ is the density of the concrete, and P is the pumping speed of the concrete.
In the embodiment of the invention, the second addition amount is the product of the addition amount of the concrete, the mass fraction of the cement and the doping amount ratio.
In an embodiment of the present invention, determining the doping ratio includes:
user settings are received to determine the doping rate.
In an embodiment of the invention, determining the pumping speed of the concrete comprises:
the pumping speed is determined according to the number of commutations of the pumping device 10.
In an embodiment of the invention, the level sensor may acquire the level of concrete in the hopper 12 in real time. A concrete pumping rate calculation module can be arranged to monitor the displacement of concrete in real time. A man-machine interaction module can be arranged, and an operator can control the doping rate of the additive through a display screen or a remote controller. The control device may perform signal processing and logic operations. An output module may be provided to output the additive amount of the control additive. In an embodiment of the present invention, the pumping speed of the concrete may be calculated by a displacement sensor or the number of reversals of the pumping device 10. And an operator sets the doping rate of the additive through the man-machine interaction module and transmits the doping rate to the control device. The level sensor 21 reads the real-time level of concrete in the hopper 12, converts the analog quantity into a digital quantity, and transmits the digital quantity to the control device, and the control device can calculate the concrete quantity in the hopper 12 through the level.
In one embodiment, the amount of concrete added may be understood as the amount of concrete added to hopper 12 by the truck in real time. During the addition of concrete to the hopper 12, there may be concrete being pumped out of the hopper 12 at this point because the pumping device 10 is not deactivated. Thus, the amount of concrete added is equal to the sum of the amount of concrete added in the hopper 12 and the amount of concrete pumped.
Namely the addition amount M= (V2-V1) ρ+P (T2-T1) of the concrete,
t1 is the first moment, T2 is the second moment, V1 is the first volume, V2 is the second volume, ρ is the density of the concrete, and P is the pumping speed of the concrete. The volume of concrete in the hopper 12 at time T1 and the volume of concrete in the hopper 12 at time T2 can be obtained by converting the level height. Since the addition location of the second additive is provided at the hopper 12 of the pumping device 10, the addition amount of the second additive can be determined according to the addition amount of the concrete.
The addition amount of the second additive = amount of concrete added by the mixer truck × mass fraction of cement × rate of incorporation.
Thus, a first addition amount of the first additive is determined according to the displacement of the concrete, and a second addition amount of the second additive is determined according to the addition amount of the concrete. The first speed valve group is used for adjusting the discharge capacity of the first additive pump 16, and further adjusting the addition amount of the first additive. The second speed valve group is used for adjusting the discharge capacity of the second additive pump 19, and further adjusting the addition amount of the second additive. After the addition amounts of the first additive and the second additive are determined, the first speed regulating valve group and the second speed regulating valve group can be controlled to respectively regulate the displacement of the first additive pump 16 and the second additive pump 19 so as to meet the requirement of the preset doping amount ratio, realize the accurate control of the addition amount of the additive and further improve the performance of the concrete.
In an embodiment of the invention, the pumping device 10 comprises a concrete cylinder 22, the concrete cylinder 22 being used for sucking material, the adding system further comprising:
a third additive delivery pipe is connected to the concrete cylinder 22 for delivering the third additive to the concrete cylinder 22 so that the third additive is mixed with the concrete at the concrete cylinder 22.
In an embodiment of the invention, the first additive, the second additive and the third additive are all chemicals that improve the performance of the concrete.
In addition to the boom means end 13 and the hopper 12 of the pumping means 10, the filling location of the additive may also be provided at the concrete cylinder 22 of the pumping means 10. Fig. 3 schematically illustrates a second schematic view of a pumping device according to an embodiment of the invention, and referring to fig. 3, fig. 3 shows the position of the concrete cylinder 22 within the pumping device 10. When the concrete cylinder 22 sucks the material, the internal pressure is at a lower level, and at this time, the additive can be filled, so that the filling difficulty is reduced. So far, in the embodiment of the invention, at least 3 filling positions of additives are provided, the innovation of the filling system and the filling positions, the application of the material level sensor and the innovative logic algorithm and control mode enable the performance of the concrete to be improved, the rebound is reduced, the strength of the concrete is increased, and the green construction is realized.
In the embodiment of the present invention, the filler of the second additive delivery pipe 18 is provided with a check valve for preventing the concrete from flowing backward into the second additive delivery pipe 18.
The embodiment of the invention provides a wet spraying machine, which comprises the following components:
a pumping device 10 for pumping the pressurized concrete into a concrete delivery pipe 11, the pumping device 10 being provided with a hopper 12;
the tail end 13 of the arm support device is provided with a nozzle;
a concrete delivery pipe 11 connected with the pumping device 10 and the arm support device respectively, and used for delivering concrete to the tail end 13 of the arm support device; and
the addition system for a wet spraying machine.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In one typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, etc., such as Read Only Memory (ROM) or flash RAM. Memory is an example of a computer-readable medium.
Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises an element.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.
Claims (10)
1. An addition system for a wet-spraying machine, the wet-spraying machine comprising:
the pumping device is used for pumping the pressurized concrete into the concrete conveying pipe and is provided with a hopper;
the tail end of the arm support device is provided with a nozzle;
the concrete conveying pipe is respectively connected with the pumping device and the arm support device and is used for conveying concrete to the tail end of the arm support device;
the addition system comprises:
a first additive tank for storing a first additive;
a first additive delivery pipe connected to the first additive tank and the boom apparatus, respectively, for delivering the first additive to a distal end of the boom apparatus such that the first additive is mixed with concrete at the distal end;
a first additive pump in communication with the first additive delivery tube for drawing the first additive from the first additive tank and pumping the pressurized first additive into the first additive delivery tube;
a second additive tank for storing a second additive;
a second additive delivery pipe connected to the second additive tank and the hopper, respectively, for delivering the second additive into the hopper such that the second additive is mixed with concrete at the hopper;
a second additive pump in communication with the second additive delivery tube for drawing the second additive from the second additive tank and pumping the pressurized second additive into the second additive delivery tube;
the material level sensor is arranged in the hopper and used for detecting the height of concrete in the hopper;
the second speed regulation valve group is used for regulating the discharge capacity of the second additive pump so as to regulate the addition amount of the second additive;
a control device configured to:
acquiring the height variation of the concrete in the hopper in a preset time period;
determining the pumping speed of the concrete;
determining the addition amount of concrete according to the height variation and the pumping speed;
determining a doping amount ratio, wherein the doping amount ratio is the mass percentage of the additive to cement in concrete;
determining a second addition amount of the second additive according to the addition amount, the addition amount ratio and the mass fraction of cement;
controlling the second speed valve group according to the second addition amount to determine the displacement of the second additive pump;
wherein additives, concrete and high pressure air are sprayed out of the nozzle after mixing at the tip, the additives including the first additive and/or the second additive.
2. The addition system of claim 1, further comprising:
the first speed regulation valve group is used for regulating the discharge capacity of the first additive pump so as to regulate the addition amount of the first additive;
a control device configured to:
determining the pumping speed of the pumping device on concrete (namely the pumping quantity of the concrete in unit time) in a preset time period;
determining the displacement of the concrete according to the preset time period, the pumping speed and the pumping speed;
determining a first addition amount of the first additive according to the displacement of the concrete;
and controlling the first speed valve group according to the first adding amount to determine the displacement of the first additive pump.
3. The addition system of claim 1, wherein the control device is further configured to:
determining a first volume of concrete in the hopper at a first time according to the height of the concrete in the hopper at the first time;
determining a second volume of concrete in the hopper at a second time according to the height of the concrete in the hopper at the second time;
the addition amount M= (V2-V1) ρ+P (T2-T1),
wherein, T1 is the first moment, T2 is the second moment, V1 is the first volume, V2 is the second volume, ρ is the density of the concrete, and P is the pumping speed of the concrete.
4. The addition system of claim 3, wherein the second addition amount is a product of an addition amount of the concrete, a mass fraction of the cement, and the addition rate.
5. The addition system of claim 1, wherein the determining the doping rate comprises:
user settings are received to determine the doping rate.
6. The addition system of claim 1, wherein the determining the pumping speed of the concrete comprises:
the pumping speed is determined based on the number of commutations of the pumping device.
7. The addition system of claim 1, wherein the pumping device comprises a concrete cylinder for sucking material, the addition system further comprising:
and a third additive delivery pipe connected with the concrete cylinder for delivering a third additive to the concrete cylinder so that the third additive is mixed with concrete at the concrete cylinder.
8. The addition system of claim 7, wherein the first additive, the second additive, and the third additive are each chemicals that improve the performance of the concrete.
9. An addition system according to claim 1, wherein the filler neck of the second additive delivery pipe is provided with a one-way valve for preventing backflow of concrete into the second additive delivery pipe.
10. A wet blasting machine, comprising:
the pumping device is used for pumping the pressurized concrete into the concrete conveying pipe and is provided with a hopper;
the tail end of the arm support device is provided with a nozzle;
the concrete conveying pipe is respectively connected with the pumping device and the arm support device and is used for conveying concrete to the tail end of the arm support device; and
the addition system for a wet-spraying machine according to any one of claims 1 to 9.
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| CN202210167921.1A CN114508236B (en) | 2022-02-23 | 2022-02-23 | A add system and wet spraying machine for wet spraying machine |
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| CN114508236A (en) | 2022-05-17 |
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