Wet-type concrete sprayer

Abstract

The wet-type concrete spraying machine comprises a spraying machine body, an electric control part, a walking part, a spiral stirring machine, a spiral conveying part, a screw pump set and a spraying set are sequentially arranged on the spraying machine body from left to right, an air source supply device is arranged on the lower portion of the electric control part, and a feeding port is formed in the upper portion of the spiral stirring machine; the injection set comprises a feeding air pipe, a material booster, a material pipe and an injection nozzle, the material pipe is connected with the screw pump set and the injection nozzle, the electric control part is used for controlling overall operation of the injection machine body, and the automatic water supply device controls the water-cement ratio of materials. According to the device, integrated feeding is achieved, auxiliary discharging and air conveying type slurry discharging are achieved through the air source air supply device and the feeding air pipe, the slurry discharging speed is high, the slurry discharging distance is long, the gas adjusting valve is arranged, the flow and the flowing speed of slurry in the material pipe can be monitored in real time, when the slurry discharging condition is not met, wind energy is used as power, the speed and the flow of the slurry are increased, and the slurry discharging efficiency is improved. The pulp outlet quality and speed are improved, and the applicability is high.

Description

Technical Field

[0001] The invention relates to the technical field of concrete spraying machines, in particular to a wet concrete spraying machine. Background Art

[0002] Wet concrete spraying machine is a device that mixes and transports concrete composite materials composed of cement, aggregate and additives in a certain ratio. The materials are continuously blown to the gun head along the conveying pipeline with the help of compressed air, and then sprayed onto the sprayed surface at high speed to solidify and harden, thus forming a concrete layer. It is widely used in engineering construction, mines, tunnels, culverts, subways, hydropower projects, underground projects, rock and soil slope reinforcement and coal mine tunnel spraying concrete construction operations, and is suitable for the transportation and spraying of ordinary mortar, premixed dry mortar, special mortar, etc.

[0003] In the prior art, during the process of conveying concrete, wet concrete spraying machines used in mines may cause discontinuous and uneven air volume to the slurry in the pipeline due to factors such as the feeding speed, the specific gravity of the concrete's own aggregates, the air supply volume or the size of the air pressure. Since the pipeline is in a fully closed state, the staff cannot accurately understand the conveying conditions of the slurry and can only adjust the air volume through the air valve based on experience to ensure that the concrete slurry is unblocked before silting up in the pipeline. However, the adjustment timing and air volume are difficult to control, which can easily cause pipeline blockage, backwind or violent pulses, affecting the concrete spraying effect. In order to improve on-site operation efficiency and improve spraying quality, we provide a wet concrete spraying machine to solve the above problems. Summary of the invention

[0004] In view of the problems existing in the above-mentioned prior art, the present invention provides a wet concrete spraying machine, which has integrated feeding, and utilizes feeding air ducts to realize auxiliary discharging, hydraulic pneumatic slurry discharging, fast slurry discharging speed and long distance, and is provided with an adjustment mechanism to monitor the flow rate and flow velocity of the slurry in the material pipe in real time, and can provide real-time digital feedback on the transportation situation in the pipeline, so that the electronic control part can adjust and control in time according to the feedback information, prevent pipe blockage, and improve the spraying quality of concrete. It does not rely on the work experience of the staff and has a high degree of intelligence.

[0005] By using wind energy as the main power, its speed and flow rate are improved, and the slurry quality and speed are improved. It is green and environmentally friendly, has strong applicability, greatly increases the service life of the equipment's wearing parts, and greatly improves the equipment's cost-effectiveness.

[0006] In order to achieve the above-mentioned object, a wet concrete spraying machine used in the present invention comprises a spraying machine body, on which an electric control part, a walking part, a spiral mixer, a spiral conveying part, a screw pump group and a spraying group are sequentially arranged from left to right, an air source supply device is arranged at the lower part of the electric control part, and a feed port is arranged at the upper part of the spiral mixer;

[0007] The driving end of the spiral mixer is connected to a reduction motor, which is composed of a spiral bevel gear reducer and a flameproof three-phase asynchronous motor for underground coal mines;

[0008] The injection group includes a feeding air duct, a material pipe and a booster injection nozzle. The material pipe is connected to the screw pump group and the injection nozzle. The feeding air duct is used for auxiliary feeding. One end of the feeding air duct is connected to the control end of the electric control part, and the other end is connected to the gas source supply device. The pipe is installed with a first gas regulating valve.

[0009] The material pipe is provided with a regulating mechanism for real-time monitoring of the concrete conveying speed and flow rate in the material pipe and adjusting the same;

[0010] The electronic control part is used to control the overall operation of the jet body.

[0011] As a further optimization of the above solution, the electric control part is a programmable explosion-proof electric control box for mining, and the walking part is a pneumatic crawler vehicle.

[0012] As a further optimization of the above scheme, in the reduction motor, the spiral bevel gear reducer is used as a connecting component, its input shaft is connected to the output end of the flameproof three-phase asynchronous motor used in coal mines, and its output shaft is connected to the driving end of the spiral mixer.

[0013] As a further optimization of the above scheme, the adjustment mechanism includes a secondary air duct fixed on the side wall of the material pipe, and the secondary air duct and the side close to the material pipe are provided with through holes distributed at equal intervals, and a rotating shaft is rotatably fitted in the through hole, and a fan blade is axially arranged at one end of the rotating shaft that penetrates into the secondary air duct, and an adjustment plate is connected to the other end that penetrates into the material pipe. An installation groove is provided on the inner wall of the material pipe, and a flow sensor and a speed sensor are installed. The flow sensor and the speed sensor are located on one side of the adjustment plate, and the air inlet end of the secondary air duct is connected to the material feeding air duct, and a second gas regulating valve is arranged in the air inlet end. An air supply branch pipe is arranged on one side of each of the rotating shafts, and the air supply branch pipe penetrates into the material pipe at an angle, and a one-way valve is arranged in the air supply branch pipe.

[0014] As a further optimization of the above solution, the axis of each rotating shaft is perpendicular to the central axis of the material pipe, and the position connecting with the material pipe and the secondary air pipe is matched with a shaft rotating seal.

[0015] As a further optimization of the above solution, the adjustment plate is an annular plate, and its outer contour fits the inner wall of the material tube, and the interior of the adjustment plate is hollow.

[0016] As a further optimization of the above solution, a water supply pipeline is arranged on the side of the jet machine body, an intelligent controller is arranged on the water supply pipeline, and a water outlet of the water supply pipeline is communicated with the main body of the spiral mixer.

[0017] As a further optimization of the above solution, one end of the secondary air duct is blocked, and the other end is connected to the feed air duct, and an intelligent air pressure gauge is provided between the connection point and the air source supply device of the feed air duct.

[0018] As a further optimization of the above solution, the output ends of the flow sensor and the speed sensor are connected to the input end of the electronic control part, and the input ends of the second gas regulating valve, the intelligent pressure gauge and the intelligent controller are connected to the output end of the electronic control part.

[0019] A wet concrete spraying machine of the present invention has the following beneficial effects:

[0020] 1. A wet concrete spraying machine of the present invention is a combination of a spiral mixer and a screw pump group, which realizes integrated feeding, and uses a feeding air duct to realize auxiliary discharging. The air-conveying slurry discharge can greatly improve the injection speed and injection distance of the slurry. At the same time, the design of the secondary air duct can perform auxiliary air supply at the front section of the material pipe, and cooperate with the feeding air duct to realize two-stage boosting of the slurry, further improving the injection speed and quality.

[0021] 2. The wet concrete spraying machine of the present invention has a pneumatic crawler-type walking part at the bottom, which enables the wet concrete spraying machine to move freely, can automatically supply water, monitor the air supply volume and water supply volume in real time, control the water-cement ratio of the slurry, and monitor the slurry injection speed and flow rate in the material pipe in real time, and perform intelligent regulation and management through the electronic control part, with a high degree of intelligence;

[0022] 3. In the wet concrete spraying machine of the present invention, the fan blade drives the rotating shaft to rotate, which has three functions. First, the fan blade drives the adjusting plate to rotate during the rotation process, so as to scrape the tube wall of the material tube and break the agglomerated slurry. Second, the fan blade drives the movable rod in the adjusting plate to rotate during the rotation process. Since the movable rod is arranged inside the adjusting plate, the rotation of the adjusting plate will not be affected, and the effect of breaking the agglomerated concrete will be increased. Third, the driving force for the rotation comes from the wind, and no additional energy is required. The wind energy is reasonably used, energy is saved, and the green and environmental protection is realized.

[0023] 4. A wet concrete spraying machine of the present invention has an adjustment mechanism that can not only monitor, but also regulate the opening and closing of the first gas regulating valve and the second gas regulating valve according to the monitoring data, thereby utilizing the increased wind energy to increase the slurry injection speed or increase the flow rate to ensure its fluidity, effectively ensuring the rapid and high-quality ejection of the slurry.

[0024] 5. The wet concrete spraying machine of the present invention can clean the internal pipe wall to a certain extent without disassembling the pipe, thereby extending the service life of the material pipe, having strong applicability and being suitable for use in coal mining areas.

[0025] With reference to the following description and drawings, a specific embodiment of the present invention is disclosed in detail, indicating the manner in which the principle of the present invention can be adopted. It should be understood that the scope of the embodiment of the present invention is not limited thereby, and the embodiment of the present invention includes many changes, modifications and equivalents. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present invention;

[0027] Figure 2 It is a left side view of the present invention;

[0028] Figure 3 It is a structural schematic diagram of the axial cross section of the material pipe in the present invention;

[0029] Figure 4 It is a schematic diagram of the cross-sectional structure of the adjustment mechanism in the first embodiment of the present invention;

[0030] Figure 5 It is a top view of a part of the movable rod in the first embodiment of the present invention;

[0031] Figure 6 It is a control block diagram of the electronic control part in the present invention.

[0032] In the figure: 1. electronic control part; 2. walking part; 3. spiral mixer; 4. spiral conveying part; 5. screw pump group; 6. injection group; 61. feeding air duct; 611. first gas regulating valve; 62. material pipe; 63. injection nozzle; 7. reduction motor; 8. water supply pipeline; 9. regulating mechanism; 91. secondary air duct; 92. rotating shaft; 93. fan blade; 94. regulating plate; 95. flow sensor; 96. speed sensor; 97. rotating seal for shaft; 98. second gas regulating valve; 99. air supply branch pipe; 10. gas source supply device; 11. intelligent barometer; 12. intelligent controller. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0034] It should be noted that when an element is referred to as being "disposed on, provided with" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected, connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. "Fixed connection" means a fixed connection. There are many ways of fixed connection, which are not within the scope of protection of this article. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only and do not represent the only implementation method.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs. The terms used in the specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0036] Embodiment 1

[0037] Please refer to the instruction manual Figures 1 to 2 and Figure 6 The present invention provides a technical solution: a wet concrete spraying machine, including a spraying machine body, on which an electric control part 1, a walking part 2, a spiral mixer 3, a spiral conveying part 4, a screw pump group 5 and a spraying group 6 are arranged from left to right in sequence, an air source supply device 10 is arranged at the lower part of the electric control part 1, a feed port is arranged at the upper part of the spiral mixer 3, a reduction motor 7 is connected to the driving end of the spiral mixer 3, and the reduction motor 7 is composed of a spiral bevel gear reducer and a flameproof three-phase asynchronous motor for underground coal mines, which is used to provide driving force for the spiral mixer 3, the electric control part 1 is a programmable flameproof electric control box for mining, and the walking part 2 is a pneumatic crawler vehicle, which is convenient for the overall movement of the spraying machine;

[0038] Reference Figure 1 The injection group 6 includes a feeding air duct 61, a material pipe 62 and an injection nozzle 63. The material pipe 62 connects the screw pump group 5 and the injection nozzle 63. The feeding air duct 61 is used for auxiliary feeding. One end of the feeding air duct 61 is connected to the control end of the electronic control part 1, and the other end is connected to the air supply device 10. The wet concrete material moves to the injection nozzle 63 through the material pipe 62, and is quickly injected with the assistance of the feeding air duct 61. A first gas regulating valve 611 is installed on the feeding air duct 61, which is convenient for the electronic control part 1 to monitor the action of the first gas regulating valve 611.

[0039] Reference Figure 2 A water supply pipeline 8 is arranged on the side of the jet machine body, an intelligent controller 12 is arranged on the water supply pipeline 8, and a water outlet of the water supply pipeline 8 is communicated with the body of the spiral mixer 3.

[0040] Referring to 3 to 5, the regulating mechanism 9 includes a secondary air duct 91 fixed on the side wall of the material pipe 62. The secondary air duct 91 and the side close to the material pipe 62 are provided with through holes distributed at equal intervals. A rotating shaft 92 is rotatably matched in the through hole. The axis of each rotating shaft 92 is perpendicular to the central axis of the material pipe 62. The position connecting the material pipe 62 and the secondary air duct 91 is provided with a shaft rotating seal 97. The end of the rotating shaft 92 penetrating the secondary air duct 91 is axially provided with a fan blade 93. The end penetrating the material pipe 62 is connected with an regulating plate 94. The regulating plate 94 is an annular plate, and the outer contour is in contact with the inner wall of the material pipe 62. The lower side of the regulating plate 94 is provided with a flow sensor 95 and a speed sensor 96. , and a flow sensor 95 and a speed sensor 96 are buried in the inner wall of the material pipe 62, the air inlet end of the secondary air pipe 91 is connected to the feeding air pipe 61, and a second gas regulating valve 98 is arranged in the air inlet end, and an air supply branch pipe 99 is arranged on one side of each rotating shaft 92, and the air supply branch pipe 99 is obliquely penetrated into the material pipe 62, and a one-way valve is arranged in the air supply branch pipe 99 to prevent the concrete slurry from flowing back into the air supply branch pipe 99; the inner circle of the adjusting plate 94 is rotatably connected with a semicircularly distributed movable rod 910, which is used to assist in breaking up the agglomerated concrete. In actual use, the average air volume of the secondary air pipe 91 can be measured to set the counterweight of the movable rod 910 to ensure that the rotation speed of the adjusting plate 94 is within a reasonable range.

[0041] Reference Figure 1 One end of the secondary air duct 61 is blocked, and the other end is connected to the feeding air duct 61. An intelligent air pressure gauge 11 is provided between the connecting point of the feeding air duct 61 and the air source supply device 10.

[0042] Reference Figure 6 The output ends of the flow sensor 95 and the speed sensor 96 are connected to the input end of the electronic control part 1, and the input ends of the second gas regulating valve 98, the intelligent pressure gauge 11 and the intelligent controller 12 are connected to the output end of the electronic control part 1. The electronic control part 1 is used to control the overall operation of the jet body.

[0043] The wet concrete spraying machine provided in this embodiment has the following working process:

[0044] During operation, concrete is delivered to the spiral mixer 3 through the feed port, and water is added through the water supply pipeline 8. The setting of the intelligent controller 12 is convenient for the staff to monitor the amount of added water through the electronic control part 1, so as to control the water-cement ratio. After the water and concrete are mixed by the spiral mixer 3, they are delivered to the screw pump group 5 through the spiral conveying part, and then discharged through the material pipe 62 and the injection nozzle 63. When discharged, the feed air duct 61 is supplied with air by the air source supply device 10, and the intelligent barometer 11 monitors the air volume. The feed air duct 61 injects high-pressure gas into the boost injection nozzle 63, and uses the wind pressure to realize auxiliary pushing, speeding up the injection speed of concrete, thereby expanding the injection range. The setting of the flow sensor 65 and the speed sensor 66 can monitor the injection speed and injection flow rate during the concrete spraying process;

[0045] The flow sensor 95 will send a signal to the electronic control part 1, so that the electronic control part 1 can monitor the amount of slurry in the material pipe 62 in real time. The concrete spraying operation can be carried out only when the slurry is sufficient. When the initial injection speed of the slurry is insufficient, the speed sensor 96 will send a signal to the electronic control part 1, and after analysis, the signal will be sent to the second gas regulating valve 98 to increase the air supply volume of the air source supply device 10 to the feeding air pipe 61, and open the second gas regulating valve 98 to allow the increased air volume to enter the secondary air pipe 91, and increase the material pipe through the branch pipe 99. The initial air volume of 62 pushes the concrete slurry to increase the speed. While assisting, the wind flow in the secondary air duct 9 will push the fan blades 93 to rotate, thereby driving the rotating shaft 92 and the adjusting plate 94 to rotate, thereby scraping the wall of the material pipe 62 to avoid concrete adhesion, and also rotating and breaking some agglomerated concrete blocks, effectively improving the discharge speed of the material pipe 62. The setting of the movable rod 910 can further increase the efficiency of breaking the agglomerated concrete and effectively ensure the injection quality of the concrete slurry.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent substitution or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A wet concrete spraying machine, characterized in that: The invention comprises a spray machine body, on which are arranged from left to right an electric control part (1), a walking part (2), a screw mixer (3), a screw conveying part (4), a screw pump group (5) and a spray group (6), wherein an air source supply device (10) is arranged at the lower part of the electric control part (1), and a feed port is arranged at the upper part of the screw mixer (3); The driving end of the spiral mixer (3) is connected to a reduction motor (7), which is composed of a spiral bevel gear reducer and a flameproof three-phase asynchronous motor for underground coal mines; The injection group (6) comprises a feeding air duct (61), a material pipe (62) and an auxiliary injection nozzle (63), wherein the material pipe (62) is connected to the screw pump group (5) and the injection nozzle (63), and the feeding air duct (61) is used for auxiliary feeding, one end of which is connected to the control end of the electric control part (1), and the other end is connected to the gas source supply device (10), and the pipe is installed with a first gas regulating valve (611); The material pipe (62) is provided with a regulating mechanism (9) for real-time monitoring of the concrete conveying speed and flow rate in the material pipe (62) and for regulating the same; The electronic control part (1) is used to control the overall operation of the jet machine body.

2. A wet concrete spraying machine according to claim 1, characterized in that: The electric control part (1) is a programmable explosion-proof electric control box for mining, and the walking part (2) is a pneumatic crawler vehicle.

3. A wet concrete spraying machine according to claim 2, characterized in that: In the reduction motor (7), the spiral bevel gear reducer is used as a connecting component, its input shaft is connected to the output end of the flameproof three-phase asynchronous motor used in coal mines, and its output shaft is connected to the driving end of the spiral mixer (3).

4. A wet concrete spraying machine according to claim 3, characterized in that: The regulating mechanism (9) comprises a secondary air duct (91) fixed on the side wall of the material pipe (62), and the secondary air duct (91) and the material pipe (62) are both provided with through holes with equal spacing on the side close to each other, and a rotating shaft (92) is rotatably fitted in the through hole, and a fan blade (93) is axially arranged on one end of the rotating shaft (92) that penetrates into the secondary air duct (91), and an regulating plate (94) is connected to the other end that penetrates into the material pipe (62), and an installation groove is provided on the inner wall of the material pipe (62), and a flow sensor is installed thereon. A flow sensor (95) and a speed sensor (96) are provided, wherein the flow sensor (95) and the speed sensor (96) are located on one side of the regulating plate (94); the air inlet end of the secondary air duct (91) is connected to the feeding air duct (61); a second gas regulating valve (98) is provided in the air inlet end; an air supply branch pipe (99) is provided on one side of each rotating shaft (92); the air supply branch pipe (99) is obliquely penetrated into the feeding pipe (62), and a one-way valve is provided in the air supply branch pipe (99).

5. A wet concrete spraying machine according to claim 4, characterized in that: The axis of each rotating shaft (92) is perpendicular to the central axis of the material pipe (62), and a shaft rotating seal (97) is provided at the position where the shaft connects with the material pipe (62) and the secondary air pipe (91).

6. A wet concrete spraying machine according to claim 5, characterized in that: The adjustment plate (94) is an annular plate, and its outer contour fits the inner wall of the material tube (62), and the interior of the adjustment plate (94) is hollow.

7. A wet concrete spraying machine according to claim 6, characterized in that: A water supply pipeline (8) is arranged on the side of the jet machine body, an intelligent controller (12) is arranged on the water supply pipeline (8), and a water outlet of the water supply pipeline (8) is communicated with the body of the spiral mixer (3).

8. A wet concrete spraying machine according to claim 7, characterized in that: One end of the secondary air duct (61) is blocked, and the other end is connected to the feed air duct (61). An intelligent air pressure gauge (11) is provided between the feed air duct (61) and the air source supply device (10) at the connection point.

9. A wet concrete spraying machine according to claim 8, characterized in that: The output ends of the flow sensor (95) and the speed sensor (96) are connected to the input end of the electric control part (1), and the input ends of the second gas regulating valve (98), the intelligent pressure gauge (11) and the intelligent controller (12) are connected to the output end of the electric control part (1).

10. A wet concrete spraying machine according to claim 8, characterized in that: The adjusting plate (94) is rotatably connected to a movable rod (910) for assisting in breaking up agglomerated concrete.

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