CN114508236A - A add system and wet blasting machine for wet blasting machine - Google Patents
A add system and wet blasting machine for wet blasting machine Download PDFInfo
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- CN114508236A CN114508236A CN202210167921.1A CN202210167921A CN114508236A CN 114508236 A CN114508236 A CN 114508236A CN 202210167921 A CN202210167921 A CN 202210167921A CN 114508236 A CN114508236 A CN 114508236A
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- 238000005422 blasting Methods 0.000 title claims description 16
- 239000000654 additive Substances 0.000 claims abstract description 270
- 230000000996 additive effect Effects 0.000 claims abstract description 256
- 239000004567 concrete Substances 0.000 claims abstract description 193
- 238000005086 pumping Methods 0.000 claims abstract description 94
- 230000001105 regulatory effect Effects 0.000 claims description 23
- 238000006073 displacement reaction Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 12
- 239000004568 cement Substances 0.000 claims description 10
- 230000001276 controlling effect Effects 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 4
- 238000005507 spraying Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 description 15
- 238000010586 diagram Methods 0.000 description 11
- 238000003860 storage Methods 0.000 description 8
- 238000004590 computer program Methods 0.000 description 7
- 230000008569 process Effects 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
- 239000007921 spray Substances 0.000 description 4
- 230000000694 effects Effects 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
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- 238000012986 modification Methods 0.000 description 2
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- 230000003287 optical effect Effects 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000005540 biological transmission Effects 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
- 238000006243 chemical reaction Methods 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
- 230000006872 improvement Effects 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- 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
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- 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; the first additive conveying pipe is respectively connected with the first additive box and the arm support device and is used for conveying the first additive to the tail end of the arm support device so that the first additive is mixed with the concrete at the tail end; a first additive pump for pumping the pressurized first additive into the first additive delivery pipe; 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 the second additive pump is used for pumping the pressurized second additive into the second additive conveying pipe. In this way, it is possible to carry out the filling of a plurality of additives with a plurality of different filling openings.
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, an air compressing device and an arm support device on a movable chassis at the same time and sprays concrete mixture to a working surface. The accelerator is one of additives, and the additives can be added into concrete and are chemical substances for improving the performance of the 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 the early strength and the final setting strength of concrete are higher and higher, and the lower the rebound rate of the concrete is, the better the concrete is, so that the existing 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.
In order to achieve the above object, a first aspect of the present invention provides an addition system for a wet blasting machine, the 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;
the adding system comprises:
a first additive tank for storing a first additive;
the first additive conveying pipe is respectively connected with the first additive box and the arm support device and is used for conveying the first additive to the tail end of the arm support device so that the first additive is mixed with the concrete at the tail end;
a first additive pump in communication with the first additive delivery pipe for drawing the first additive from the first additive tank and pumping the pressurized first additive into the first additive delivery pipe;
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 so that the second additive is mixed with the concrete at the hopper;
a second additive pump in communication with the second additive delivery pipe for pumping the second additive from the second additive tank and pumping the pressurized second additive into the second additive delivery pipe;
the additive, the concrete and the high-pressure air are sprayed out of the nozzle after being mixed at the tail end, and the additive comprises a first additive and/or a second additive.
In an embodiment of the present invention, the adding system further includes:
the first speed regulating valve bank 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 in a preset time period (namely the pumping amount of the concrete in unit time);
determining the discharge capacity of concrete according to the preset time period and the pumping speed;
determining a first addition amount of a first additive according to the discharge capacity of the concrete;
the displacement of the first additive pump is determined by controlling the first speed valve bank based on the first additive amount.
In an embodiment of the present invention, the adding system further includes:
the material level sensor is arranged in the hopper and used for detecting the height of concrete in the hopper;
the second speed regulating valve bank 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 concrete in the hopper in a preset time period;
determining the pumping speed of the concrete;
determining the adding amount of concrete according to the height variation and the pumping speed;
determining the doping rate, wherein the doping rate is the mass percentage of the additive to the cement in the concrete;
determining the second additive according to the adding amount, the mixing amount rate and the mass fraction of the cement
Adding the second amount;
and controlling the second speed 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 moment according to the height of the concrete in the hopper at the first moment;
determining a second volume of concrete in the hopper at a second moment according to the height of the concrete in the hopper at the second moment;
the addition amount M of the concrete is (V2-V1) × ρ + P (T2-T1),
t1 is the first time, T2 is the second time, 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 addition rate.
In the embodiment of the invention, the determining the doping rate comprises the following steps:
user settings are received to determine the dosing 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 present invention, the pumping device comprises a concrete cylinder, the concrete cylinder is used for sucking materials, and the adding system further comprises:
and the third additive conveying pipe is connected with the concrete cylinder and is used for conveying the third additive to the concrete cylinder so that the third additive is mixed with the concrete at the concrete cylinder.
In embodiments of the invention, the first additive, the second additive and the third additive are chemical substances that improve the performance of the concrete.
In an embodiment of the invention, the filling port of the second additive delivery pipe is provided with a one-way valve for preventing concrete from flowing back into the second additive delivery pipe.
A second aspect of the present invention provides 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 above-described addition system for a wet blasting machine.
Because different types of additives are easy to chemically react with each other to affect the addition effect of the additives, a plurality of (at least two) sets of additive addition systems are arranged in the embodiment of the invention to realize that different types of additives are independently added respectively. In the embodiment of the invention, a plurality of different filling ports are further arranged, and specifically, the first additive is mixed with the concrete at the tail end of the boom device, so that the adding amount of the first additive can be determined according to the discharge capacity 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. Therefore, 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 green construction is realized.
Compare the addition of controlling the additive through the rebound resilience of monitoring concrete, the realization degree of difficulty of this kind of monitoring mode in the in-service use is higher, and the relation of the addition of additive and rebound resilience is not the linear relation, and the scheme of adjusting the addition in real time through the rebound resilience 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, and the method can be easily realized in the actual use process, and can ensure better injection quality and lower rebound resilience.
Compared with the additive, the additive is arranged in the concrete pipeline at the adding position, the concrete pipeline has 2-4 Mpa resistance inside during pumping, and the outlet pressure of the conventional commonly-used additive pump is only about 1Mpa, so that the additive is difficult to add. In the embodiment of the invention, the filling port 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, which are included to provide a further understanding of the 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 the embodiments of the invention without limiting the embodiments of the invention. In the drawings:
FIG. 1 schematically illustrates a schematic diagram of a wet blasting machine and additive 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 invention;
figure 3 schematically illustrates a second schematic of a pumping arrangement according to an embodiment of the invention.
Description of the reference numerals
10-a pumping device; 11-concrete conveying pipe;
12-a hopper; 13-the end of the boom device;
14-a first additive tank; 15-a first additive delivery pipe;
16-a first additive pump; 17-a second additive tank;
18-a second additive delivery pipe; 19-a second additive pump;
20-the filling position of the second additive; 21-a level sensor;
22-concrete cylinder; 23-high pressure air.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are referred to in the embodiments of the present application, the directional indications are only used for explaining the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indication is changed accordingly.
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 relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between the various embodiments can be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.
FIG. 1 schematically illustrates a schematic diagram of a wet blasting machine and additive system according to an embodiment of the invention. As shown in fig. 1, the wet blasting machine includes:
the pumping device 10 is used for pumping the pressurized concrete into the concrete conveying pipe 11, and the pumping device 10 is provided with a hopper 12;
a boom device, the tail end 13 of which is provided with a nozzle;
the concrete conveying pipe 11 is respectively connected with the pumping device 10 and the arm support device and is used for conveying 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 addition 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, so that the first additive is mixed with the concrete at the end 13;
a first additive pump 16, communicating 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 a second additive into the hopper 12 to mix the second additive with the concrete at the hopper 12;
a second additive pump 19 communicating with the second additive delivery pipe 18, for pumping the second additive from the second additive tank 17 and pumping the pressurized second additive into the second additive delivery pipe 18;
the additives, including the first additive and/or the second additive, concrete and high pressure air are mixed at the tip 13 and then sprayed from the nozzle.
The wet spraying machine is a mechanical device which is provided with a pumping device, an accelerator adding device, a compressed air device and an arm support 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, reinforced structures, wooden templates and the like. The accelerator is one of additives. The additive can be added into concrete and is a chemical substance for improving the performance of the concrete. Pumping device 10 may be understood as a device comprised of components such as concrete hopper 12, dispensing valves, concrete cylinder 22, water wash tank, propulsion means and controls.
Referring to fig. 1, in a pumping device 10, after concrete is pressurized by a concrete cylinder, the concrete is delivered to the tail end 13 of a boom device through a concrete delivery pipe 11. A first additive pump 16 draws the first additive from a first additive tank 14 and pressurizes it through a first additive delivery pipe 15, where it mixes with the concrete at the end 13 of the boom apparatus. The first additive can be mixed with concrete at a spray head of the arm support device to accelerate the solidification speed of the sprayed concrete and improve the early strength of the sprayed concrete. The mixing ratio can be understood as the mass percentage of the additive to the cement in the concrete. For the first additive, the dosage rate can be automatically controlled by the displacement of the concrete.
The invention can be realized by providing a multi-component additive for a wet spraying machine. Referring to fig. 1, a two-component additive system is taken as an example, and in addition to the first additive, a second additive tank 17, a second additive delivery pipe 18, a second additive pump 19, and a second additive filling port 20 (filling position) are provided. Fig. 2 schematically illustrates one of the schematic views of a pumping device according to an embodiment of the present invention, and referring to fig. 2, a filling location 20 of the second additive is identified in fig. 2, the filling location of the second additive being at the hopper 12 of the pumping device 10. Referring to fig. 1, a second additive is stored in a second additive tank 17, a second additive pump 19 pumps the second additive out of the second additive tank 17 and pumps the pressurized second additive into a second additive delivery pipe 18, which enters a hopper of the pumping device 10 to mix with the concrete, thus achieving the addition of the second additive. The addition amount of the second additive may be determined according to the addition amount of the concrete. The concrete added with the two-component additive is mixed with high-pressure air 23 at the tail end 13 of the arm support device, and then the concrete is sprayed out from a nozzle at the tail end 13 of the arm support device.
Because different types of additives are easy to chemically react with each other to affect the addition effect of the additives, a plurality of (at least two) sets of additive addition systems are arranged in the embodiment of the invention to realize that different types of additives are independently added respectively. In the embodiment of the invention, a plurality of different filling ports are also provided, and specifically, the first additive is mixed with the concrete at the tail end 13 of the boom device, so that the adding amount of the first additive can be determined according to the discharge capacity 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. Therefore, 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 green construction is realized.
Compare the addition of controlling the additive through the rebound resilience of monitoring concrete, the realization degree of difficulty of this kind of monitoring mode in the in-service use is higher, and the relation of the addition of additive and rebound resilience is not the linear relation, and the scheme of adjusting the addition in real time through the rebound resilience 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, and the method can be easily realized in the actual use process, and can ensure better injection quality and lower rebound resilience.
Compared with the additive, the additive is arranged in the concrete pipeline at the adding position, the concrete pipeline has 2-4 Mpa resistance inside during pumping, and the outlet pressure of the conventional commonly-used additive pump is only about 1Mpa, so that the additive is difficult to add. Whereas in the embodiment of the present invention, the filling port 20 for the second additive is provided at the hopper 12 of the pumping device 10, the difficulty of filling the second additive is greatly reduced because the pressure at the hopper 12 is at a low level.
In an embodiment of the present invention, the adding system further includes:
the first speed regulating 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 the pumping speed of the pumping device 10 to the concrete in a preset time period (namely the pumping amount of the concrete in unit time);
determining the discharge capacity of concrete according to the preset time period and the pumping speed;
determining a first addition amount of a first additive according to the discharge capacity of the concrete;
the displacement of the first additive pump is determined by controlling the first speed valve bank based on the first additive amount.
Referring to fig. 1, since the adding position of the first additive is set at the end 13 of the boom device, the first adding amount of the first additive may be determined by the displacement of the concrete, which may be understood as the amount of concrete pumped out by the pumping device 10 in a preset time period. The discharge capacity of the concrete and the adding amount of the first additive are kept in a certain proportion, the performance of the concrete is improved, rebound is reduced, the strength of the concrete is increased, and green construction is realized.
In an embodiment of the present invention, the adding system further includes:
a level sensor 21 disposed in the hopper 12 for detecting the height of the concrete in the hopper 12;
the second speed regulating valve group is used for regulating the discharge capacity of the second additive pump 19 so as to regulate the addition amount of a second additive;
the control device is further configured to:
acquiring the height variation of the concrete in the hopper 12 within a preset time period;
determining the pumping speed of the concrete;
determining the adding amount of concrete according to the height variation and the pumping speed;
determining the doping rate, wherein the doping rate is the mass percentage of the additive to the cement in the concrete;
determining a second addition amount of the second additive according to the addition amount, the mixing rate and the mass fraction of the cement;
the displacement of the second additive pump 19 is determined by controlling the second speed valve set in accordance with the second amount of additive.
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 fill level sensor is a group of devices consisting of ultrasonic sensors or other sensors that can detect the fill level. The material level detection function is added through the material level sensor, the technical scheme that the additive is filled in the hopper 12 is more suitable, and the adding amount of the second additive is more accurate.
It should be noted that, in addition to using the governor valve bank to adjust the displacement of the additive pump, the additive amount may be adjusted in other ways. The use of a governor valve pack to regulate the displacement of the additive pump is one embodiment, but not limited to. For example, the additive pump can be regulated in two ways, one way is to use a speed regulating valve to control the speed in a hydraulic mode, and the additive pump is driven by a motor; secondly, the speed is regulated by using a frequency converter in an electric control way, and the additive pump is driven by a motor; both of these approaches are 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 hopper 12 at a first time based on the height of the concrete in the hopper 12 at the first time;
determining a second volume of concrete in the hopper 12 at a second moment according to the height of the concrete in the hopper 12 at the second moment;
the addition amount M of the concrete is (V2-V1) × ρ + P (T2-T1),
t1 is the first time, T2 is the second time, 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 addition rate.
In the embodiment of the invention, the determining the doping rate comprises the following steps:
user settings are received to determine the dosing rate.
In an embodiment of the invention, determining the pumping speed of the concrete comprises:
the pumping speed is determined based on the number of commutations of the pumping device 10.
In the embodiment of the present invention, the level sensor can obtain the concrete level in the hopper 12 in real time. A concrete pumping volume calculation module can be arranged to monitor the displacement of the concrete in real time. A man-machine interaction module can be arranged, and an operator can control the mixing rate of the additive through a display screen or a remote controller. The control device can perform signal processing and logical operation. An output module may be provided to output the additive amount of the control additive. In the embodiment of the present invention, the pumping speed of the concrete can be calculated by a displacement sensor or the number of times of reversing the pumping device 10. An operator sets the mixing rate of the additive through the man-machine interaction module and transmits the mixing rate to the control device. The material level sensor 21 reads the real-time concrete material level 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 material level.
In one embodiment, the amount of concrete added may be understood as the amount of concrete that the mixer truck adds to the hopper 12 in real time. During the process of adding concrete to hopper 12, concrete may be pumped from hopper 12 at this time because pumping apparatus 10 is not stopped. The amount of concrete added is therefore equal to the sum of the amount of concrete added in the hopper 12 and the pumping amount of concrete.
Namely, the adding amount M of the concrete is (V2-V1) × ρ + P (T2-T1),
t1 is the first time, T2 is the second time, 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 the concrete in the hopper at the time T1 and the volume of the concrete in the hopper at the time T2 can be obtained by conversion of the material level height. Since the adding position of the second additive is set at the hopper of the pumping device 10, the adding amount of the second additive can be determined according to the adding amount of the concrete.
The addition amount of the second additive is the mass fraction of the concrete added by the mixer truck.
Thus, a first addition amount of the first additive is determined according to the discharge amount 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 regulating valve group is used for regulating the discharge capacity of the first additive pump 16, and further regulating the addition amount of the first additive. The second speed regulating valve group is used for regulating the displacement of the second additive pump 19, and further regulating 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 discharge capacities of the first additive pump 16 and the second additive pump 19 so as to meet the requirement of a preset addition rate, the accurate control of the addition amount of the additives is realized, and the performance of the concrete is further improved.
In the embodiment of the present invention, the pumping device 10 includes a concrete cylinder 22, the concrete cylinder 22 is used for sucking materials, and the adding system further includes:
and a third additive delivery pipe 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 embodiments of the invention, the first additive, the second additive and the third additive are chemical substances that improve the performance of the concrete.
In addition to the end 13 of the boom apparatus and the hopper of the pumping apparatus 10, a filling location for the additive may also be provided at the concrete cylinder 22 of the pumping apparatus 10. Fig. 3 schematically shows a second schematic view of a pumping arrangement according to an embodiment of the invention, and with reference to fig. 3, fig. 3 indicates the position of the concrete cylinder 22 in the pumping arrangement 10. When the concrete cylinder 22 sucks materials, the internal pressure is at a lower level, and the additive can be filled at the moment, so that the filling difficulty is reduced. Therefore, in the embodiment of the invention, at least 3 additive filling positions are provided, and innovations of an adding system and the filling positions, application of a level sensor, and an innovative logic algorithm and control mode are provided, so that the performance of the concrete is improved, rebound is reduced, the strength of the concrete is increased, and green construction is realized.
In the present embodiment, the filling port of the second additive delivery pipe 18 is provided with a check valve for preventing backflow of concrete into the second additive delivery pipe 18.
The embodiment of the invention provides a wet spraying machine, which comprises:
the pumping device 10 is used for pumping the pressurized concrete into the concrete conveying pipe 11, and the pumping device 10 is provided with a hopper 12;
the tail end of the arm support device is provided with a nozzle;
the concrete conveying pipe 11 is respectively connected with the pumping device 10 and the arm support device and is used for conveying concrete to the tail end 13 of the arm support device; and
the above-described addition system for a wet blasting machine.
As will be appreciated by one skilled in the art, 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 flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams 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 a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). The 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 computer storage media 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 that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
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 an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (11)
1. An addition system for a wet blasting machine, the 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;
the adding system comprises:
a first additive tank for storing a first additive;
the first additive conveying pipe is respectively connected with the first additive box and the arm support device and is used for conveying the first additive to the tail end of the arm support device so that the first additive is mixed with concrete at the tail end;
a first additive pump in communication with the first additive delivery pipe for drawing the first additive from the first additive tank and pumping the pressurized first additive into the first additive delivery pipe;
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 so that the second additive is mixed with concrete at the hopper;
a second additive pump in communication with the second additive delivery pipe for drawing the second additive from the second additive tank and pumping the pressurized second additive into the second additive delivery pipe;
wherein an additive, concrete and high pressure air are mixed at the tip and sprayed from the nozzle, the additive comprising the first additive and/or the second additive.
2. The addition system of claim 1, further comprising:
the first speed regulating valve bank 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 in a preset time period (namely the pumping amount of the concrete in unit time);
determining the discharge capacity of concrete according to the preset time period and the pumping speed;
determining a first addition amount of the first additive according to the discharge capacity of the concrete;
determining a displacement of the first additive pump based on the first additive amount controlling the first speed valve block.
3. The addition system of claim 1, further comprising:
the material level sensor is arranged in the hopper and used for detecting the height of concrete in the hopper;
the second speed regulating valve bank 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 concrete in the hopper in a preset time period;
determining the pumping speed of the concrete;
determining the adding amount of 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 concrete;
determining a second addition amount of the second additive according to the addition amount, the doping rate and the mass fraction of the cement;
and controlling the second speed valve group according to the second additive amount to determine the displacement of the second additive pump.
4. The addition system of claim 3, wherein the control device is further configured to:
determining a first volume of concrete in the hopper at a first moment according to the height of the concrete in the hopper at the first moment;
determining a second volume of concrete in the hopper at a second moment according to the height of the concrete in the hopper at the second moment;
the addition amount M of the concrete is (V2-V1) × ρ + P (T2-T1),
wherein T1 is the first time, T2 is the second time, 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.
5. The addition system of claim 4, wherein the second addition amount is a product of an addition amount of the concrete, a mass fraction of the cement, and the dosage rate.
6. The addition system of claim 3, wherein said determining a loading rate comprises:
user settings are received to determine the dosing rate.
7. The addition system of claim 3, wherein said determining a pumping rate of concrete comprises:
the pumping speed is determined according to the number of commutations of the pumping device.
8. The addition system of claim 1, wherein the pumping device comprises a concrete cylinder for sucking material, the addition system further comprising:
and the third additive delivery pipe is connected with the concrete cylinder and used for delivering a third additive to the concrete cylinder so that the third additive is mixed with the concrete at the concrete cylinder.
9. The addition system of claim 8, wherein the first additive, the second additive, and the third additive are each chemicals that improve the performance of concrete.
10. The addition system according to claim 1, characterized in that the filling port of the second additive delivery pipe is provided with a one-way valve for preventing backflow of concrete into the second additive delivery pipe.
11. 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 blasting machine according to claims 1 to 10.
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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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| 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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| CN114508236B (en) | 2024-03-08 |
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