Integrated intelligent slurrying system for cement mixing pile

Abstract

A cement mixing pile integrated intelligent slurrying system relates to the technical field of slurrying devices and comprises a PLC (programmable logic controller), a stock bin, a guide chute, a spiral conveyor, a feeding pipe, a quantitative weighing mechanism, a mixing container, a mixing mechanism, a quantitative water input mechanism, a discharge pipe and a feeding chute, and the tail end of the feeding chute is used for being connected with a concrete mixer truck; and the PLC is electrically connected with the power supply and is configured to control the spiral conveyor, the quantitative weighing mechanism, the quantitative water input mechanism, the stirring mechanism and the discharging pipe. Automatic operation of the whole mortar preparation process is achieved, the working efficiency can be remarkably improved, the labor intensity is reduced, the mortar preparation quality is guaranteed, and the construction requirement of a large-area cement mixing pile can be fully met.

Description

Technical Field

[0001] The present invention relates to the technical field of pulping devices, and more particularly to an integrated intelligent pulping system for cement mixing piles. Background Art

[0002] Mixing piles are an effective form for soft foundation treatment. By using cement as a solidifying agent, a special mixing machine is used to spray cement into the soil and mix it thoroughly, causing a series of physical and chemical reactions between the cement and the soil, thereby hardening the soft soil and improving the strength of the foundation. The pile body formed by this treatment method has integrity, water stability and certain strength, and is suitable for the reinforcement of saturated soft clay foundations.

[0003] Obviously, the construction of mixing piles usually requires a large amount of cement slurry. Most of the existing slurry preparation methods are operated by common mechanical equipment, such as mixers combined with a large amount of manual labor. This method not only has low work efficiency and high labor intensity, but also the quality of the slurry depends on manual experience, making it difficult to meet the construction needs of large areas. Some existing patents have disclosed some automatic feeding devices, such as a cement automatic and quantitative feeding device for a dry-mixed mortar preparation system disclosed in CN214925790U. However, such devices can only achieve the functions of automatic feeding and quantitative feeding, and cannot realize the full-process automation of mortar preparation. Summary of the Utility Model

[0004] The present invention provides an integrated intelligent pulping system for cement mixing piles, aiming to solve the problem described in the background art that "most of the existing slurry preparation methods are operated by common mechanical equipment, such as mixers combined with a large amount of manual labor. This method not only has low work efficiency and high labor intensity, but also the quality of the slurry depends on manual experience, making it difficult to meet the construction needs of large areas".

[0005] To achieve the above object, the technical solution of the present invention is as follows:

[0006] An integrated intelligent pulping system for cement mixing piles includes a PLC controller, a silo for loading dry-mixed mortar. The bottom end of the silo is provided with a guide chute with a V-shaped cross-section and the bottom inclined upward to one side. The bottom of the guide chute is provided with a screw conveyor for outputting dry-mixed mortar. The high end of the screw conveyor extends out of one side of the silo and is connected with a feeding pipe. The bottom end of the feeding pipe is connected with a quantitative weighing mechanism. The output end of the quantitative weighing mechanism is connected with a mixing container. The mixing container is provided with a mixing mechanism. The side wall of the mixing container is also connected with a quantitative water input mechanism. The bottom of the mixing container is provided with a discharge pipe. The discharge pipe is connected with a feeding chute. The end of the feeding chute is used to connect with a concrete mixer truck. The PLC controller is electrically connected to a power supply and is configured to control the screw conveyor, the quantitative weighing mechanism, the quantitative water input mechanism, the mixing mechanism, and the discharge pipe.

[0007] Preferably, the screw conveyor includes a rotating shaft disposed along the bottom of the material guiding groove and extending outside the silo. A screw conveyor blade is provided outside the rotating shaft. An outlet cylinder is sleeved outside the part of the rotating shaft located outside the silo and outside the screw conveyor blade. A feeding pipe is connected to the end of the outlet cylinder. One end of the rotating shaft away from the feeding pipe penetrates through the side wall of the silo and is fixedly connected to the output shaft of a driving motor preset on the outer wall of the silo. Both ends of the rotating shaft are rotatably connected to the side wall of the silo or the inner wall of the outlet cylinder. The driving motor is electrically connected to the PLC controller through a wire.

[0008] Preferably, the feeding pipe is arranged longitudinally. The quantitative weighing mechanism includes two oppositely arranged mounting plates. A roller body is rotatably connected between the two mounting plates. A plurality of weighing grooves are evenly distributed around the axis on the outer wall of the roller body. A weighing sensor is provided at the bottom of the weighing groove. A storage box is connected to the top end of the weighing sensor. A feeding nozzle is provided at the bottom end of the feeding pipe. Both ends of the central axis of the roller body are rotatably connected to the mounting plates. One end of the central axis of the roller body penetrates through one side of the mounting plate and is fixedly connected to the output shaft of a rotating motor preset on the outer surface of the mounting plate. The rotating motor is electrically connected to the PLC controller through a wire. The weighing sensor is in signal connection with the PLC controller.

[0009] Preferably, a display is provided on the side wall of the roller body corresponding to each weighing groove where the weighing sensor is located. The display is electrically connected to the weighing sensor. An observation port is provided through the upper part of one of the mounting plates. A visual sensor is installed at the outer port of the observation port. The observation port faces the display outside the weighing groove being weighed. The visual sensor is in signal connection with the PLC controller through a wire. A storage battery for supplying power to the weighing sensor is also embedded in the weighing groove.

[0010] Preferably, a discharge chute is fixedly provided between the lower parts of the two mounting plates away from the silo. The high end of the discharge chute is slidably connected to the outer surface of the roller body and is used to dock with the weighing groove rotated to the high end position of the discharge chute. The low end of the discharge chute is connected to the feed pipe of the mixing container.

[0011] Preferably, the mixing container is provided with a top cover. The mixing mechanism includes a mixing motor fixedly provided at the upper end of the top cover. The output shaft of the mixing motor rotatably passes through the top cover and extends into the mixing container. Mixing blades are provided outside the shaft wall of the output shaft located inside the mixing container. A funnel-shaped discharge bin is integrally connected to the lower part of the mixing container. A discharge pipe is connected to the bottom end of the discharge bin. The mixing motor is electrically connected to the PLC controller through a wire. A vibrator is also provided on the outer wall of the mixing container. The vibrator is electrically connected to the PLC controller through a wire.

[0012] Preferably, a first solenoid valve is provided on the feeding pipe, and a second solenoid valve is provided on the discharging pipe. The quantitative water input mechanism includes a water inlet pipe connected to the side wall of the mixing container. The water inlet pipe is connected to the total water inlet pipe through a flow pump. The flow pump, the first solenoid valve, and the second solenoid valve are respectively electrically connected to the PLC controller through wires.

[0013] Preferably, the bottom end of the feeding chute is connected to the ground through a first bracket, the bottom end of the mixing container is connected to the ground through a second bracket, the mounting plate of the quantitative weighing mechanism is connected to the ground through a third bracket, and the bottom end of the silo is connected to the ground through a fourth bracket.

[0014] The novel integrated intelligent mortar preparation system for cement mixing piles has the following beneficial effects:

[0015] The novel realizes the automatic operation of the whole process of mortar preparation, can significantly improve work efficiency, reduce labor intensity, ensure the quality of mortar preparation, and fully meet the construction requirements of large-area cement mixing piles. Description of the Drawings

[0016] Figure 1 The overall structural schematic diagram of the novel;

[0017] Figure 2 The side view structural schematic diagram of the silo of the novel;

[0018] Figure 3 The sectional structural schematic diagram of the novel;

[0019] Figure 4 The front view structural schematic diagram of the quantitative weighing mechanism of the novel;

[0020] 1: Silo, 2: Guide chute, 3: Driving motor, 4: Discharge cylinder; 5: Feeding pipe, 6: Mounting plate, 7: Vision sensor, 8: Discharge chute, 9: Feed pipe, 10: Mixing container, 11: Mixing motor, 12: Flow pump, 13: Total water inlet pipe, 14: Discharge pipe, 15: Feeding chute, 16: Concrete mixer truck, 17: First bracket, 18: Second bracket, 19: Fourth bracket, 20: Rotating shaft, 21: Screw conveyor blade, 22: Output shaft, 23: Mixing blade, 24: Feeding nozzle, 25: First solenoid valve, 26: Weighing sensor, 27: Storage box, 28: Weighing groove, 29: Roller, 30: Display, 31: Observation port, 32: Vibrator, 33: Air hole. Detailed Embodiments

[0021] The following is a detailed description of the embodiments of the present invention in a step-by-step manner. This description is only for the preferred embodiments of the present invention and is not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0022] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the purpose of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, as well as a specific orientation structure and operation. Therefore, it should not be construed as a limitation to the present invention.

[0023] In this embodiment, an integrated intelligent slurry-making system for a cement mixing pile of the present invention includes a PLC controller (not shown in the figure), a silo 1 for loading dry-mixed mortar. The bottom end of the silo 1 is provided with a guide chute 2 with a V-shaped cross-section and the bottom inclined upward to one side. As Figure 1 , 2 shown, the guide chute 2 is connected to the bottom of the silo to jointly form a space for accommodating dry-mixed mortar. Due to the V-shaped cross-section, the dry-mixed mortar will continuously replenish into the guide chute due to its own gravity. Therefore, automatic feeding of the screw conveyor can be realized, ensuring continuous output of dry-mixed mortar. As Figure 3 shown, a screw conveyor for outputting dry-mixed mortar is provided at the bottom of the guide chute 2. The high end of the screw conveyor extends out of one side of the silo 1 and is connected with a feeding pipe 5. The bottom end of the feeding pipe 5 is connected with a quantitative weighing mechanism. The output end of the quantitative weighing mechanism is connected with a mixing container 10. The mixing container 10 is provided with a mixing mechanism. A quantitative water input mechanism is also connected to the side wall of the mixing container 10. A discharge pipe 14 is provided at the bottom of the mixing container 10. The discharge pipe 14 is connected with a feeding chute 15. The end of the feeding chute 15 is used to be connected with a concrete mixer truck 16; that is, the dry-mixed mortar is accurately weighed and enters the mixing container together with a quantitative amount of water, and then is fully stirred and mixed by the mixing mechanism. The prepared slurry is discharged into the feeding chute through the discharge pipe, and then enters the concrete mixer truck through the feeding chute. The concrete mixer truck directly transports the mortar to the construction site; the PLC controller is electrically connected to the power supply and is configured to control the screw conveyor, the quantitative weighing mechanism, the quantitative water input mechanism, the mixing mechanism, and the discharge pipe.

[0024] In a further embodiment, as Figure 1 , 3As shown in the figure, the screw conveyor includes a rotating shaft 20 disposed along the bottom of the material guiding groove 2 and extending outside the silo 1. A screw conveyor blade 21 is provided outside the rotating shaft 20. An outlet cylinder 4 is sleeved outside the part of the rotating shaft 20 located outside the silo 1 and outside the screw conveyor blade 21. A feeding pipe 5 is connected to the end of the outlet cylinder 4. One end of the rotating shaft 20 away from the feeding pipe 5 penetrates through the side wall of the silo 1 and is fixedly connected to the output shaft of a driving motor 3 preset on the outer wall of the silo. Both ends of the rotating shaft 20 are rotatably connected to the side wall of the silo 1 or the inner wall of the outlet cylinder 4. The driving motor 3 is electrically connected to a PLC controller through a wire. When one end of the rotating shaft is rotatably connected to the inner wall of the outlet cylinder 4, an outlet can be provided at the bottom of the outlet cylinder, and this outlet is connected to the top end of the feeding pipe; or the end of the rotating shaft is rotatably connected to the inner wall of the outlet cylinder through a bracket, that is, while rotating, it does not prevent the outlet at the end of the outlet cylinder from discharging materials.

[0025] In a further embodiment, as Figure 1 、 3 、Figure 4 shows, the feeding pipe 5 is arranged longitudinally. The quantitative weighing mechanism includes two oppositely arranged mounting plates 6. A roller body 29 is rotatably connected between the two mounting plates 6. A plurality of weighing grooves 28 are evenly distributed around the axis on the outer wall of the roller body 29. A weighing sensor 26 is provided at the bottom of the weighing groove 28. A storage box 27 is connected to the top end of the weighing sensor 26. A feeding nozzle 24 is provided at the bottom end of the feeding pipe 5. Both ends of the central axis of the roller body 29 are rotatably connected to the mounting plates 6. One end of the central axis of the roller body 29 penetrates through one side of the mounting plate 6 and is fixedly connected to the output shaft of a rotating motor (as Figure 4 shown in the figure, not marked in the figure) preset on the outer surface of the mounting plate 6. The rotating motor is electrically connected to the PLC controller through a wire. The weighing sensor 26 is signal-connected to the PLC controller. In actual use, each weighing groove can be numbered in sequence. When preparing a batch of slurry, the weighing amount of each weighing groove is calculated in advance, and then automatic weighing is completed under the control of the PLC controller. For example, for 190 kg of dry-mixed mortar raw materials, if the preset weighing amount for each weighing groove is 50 kg, then the weighing amount in the fourth weighing groove is 40 kg. The PLC controller used in this new type is a common technology, and its specific working principle will not be elaborated. It can also be replaced with a controller of other circuit board structures, single-chip microcomputer structures, or chip structures.

[0026] In a further embodiment, as Figure 1 、 3, as shown in FIGS. 4, on the side wall of the roller 29 corresponding to each weighing sensor 26 in the weighing groove 28, a display 30 is provided. The display 30 is electrically connected to the weighing sensor 26. On the upper part of one of the mounting plates 6, a through observation port 31 is provided. A vision sensor 7 is installed at the outer port of the observation port 31. The observation port 31 faces the display 30 outside the weighing groove 28 being weighed. The vision sensor 7 is signal-connected to the PLC controller through a wire. A storage battery (not shown in the figure) for supplying power to the weighing sensor 26 is also embedded in the weighing groove 28. In this embodiment, the purpose of such a setting is to avoid the disadvantages of directly connecting the weighing sensor to the PLC controller through a wire, that is, during the automatic weighing process, the wire is easily wound or even damaged due to rotation. The weight information on the display is detected by the vision sensor (high-definition camera). When the preset weight value is reached, feeding into the storage box in the weighing groove is stopped. The weighing groove is rotated to a position where it is docked with the discharge chute for discharging. During the rotation process, the subsequent weighing grooves complete automatic weighing. Therefore, an automatic assembly line for weighing is formed.

[0027] In a further embodiment, as Figure 1 , 3 , as shown in FIGS. 4, between the lower parts of the two mounting plates 6 away from the hopper 1, a discharge chute 8 is fixedly provided. The high end of the discharge chute 8 is slidably connected to the outer surface of the roller 29 and is used to dock with the weighing groove 28 rotated to the high end position of the discharge chute 8. The low end of the discharge chute is connected to the feed pipe of the mixing container 10. As Figure 3 shown, during weighing, the storage box in the uppermost weighing groove receives the dry-mixed mortar output from the feeding pipe. When the high-definition camera detects that the value on the display is consistent with the preset weight, the rotation motor is started to rotate the weighing groove clockwise by a set angle. Then, the next weighing groove performs weighing and is rotated by the set angle. Finally, the weighing groove is docked with the discharge chute, and the quantified dry-mixed concrete is input into the discharge chute. Due to its own gravity, the concrete slides into the mixing container 10. This process is continuously repeated to achieve the quantitative weighing and feeding of all dry-mixed mortar. Since the upper end of the discharge chute is open, even if some of the dry-mixed mortar in the upper weighing groove spills during the rotation process, it will fall onto the discharge chute.

[0028] In a further embodiment, as Figure 1 , 3, as shown in FIGS. 4, the stirring container 10 is provided with a top cover. The stirring mechanism includes a stirring motor 11 fixedly arranged at the upper end of the top cover. The output shaft of the stirring motor 11 rotatably passes through the top cover and extends into the stirring container 10. Stirring blades 23 are arranged on the outer wall of the shaft of the output shaft located in the stirring container 10. A funnel-shaped discharging bin (not marked in the figure) is integrally connected to the lower part of the stirring container 10. A discharging pipe 14 is connected to the bottom end of the discharging bin. The stirring motor 11 is electrically connected to the PLC controller through a wire. This embodiment gives a conventional stirring method. As an improvement, a vibrator 32 is further arranged on the outer wall of the stirring container. The vibrator 32 is electrically connected to the PLC controller through a wire. Through vibration, redundant air bubbles in the mortar are discharged, making the mortar dense.

[0029] In a further embodiment, as Figure 1 , 3 , as shown in FIGS. 4, the feeding pipe 5 is provided with a first solenoid valve 25, and the discharging pipe 14 is provided with a second solenoid valve (not marked in the figure as shown in Figure 3 ). The quantitative water input mechanism includes a water inlet pipe connected to the side wall of the stirring container 10. The water inlet pipe is connected to the total water inlet pipe 13 through a flow pump 12. The flow pump 12, the first solenoid valve, and the second solenoid valve are respectively electrically connected to the PLC controller through wires. The water inflow into the stirring container is controlled by the flow pump, thereby realizing the quantitative control of the water volume. The control during the quantitative weighing process is achieved by controlling the first solenoid valve and the second solenoid valve, that is, during the rotation of the roller body, the first solenoid valve is closed, and it is opened until the weighing groove is opposite to the feeding nozzle; similarly, the second solenoid valve is opened during discharging and closed when not discharging.

[0030] In a further embodiment, as Figure 1 , 3 , as shown in FIGS. 4, the bottom end of the feeding chute 15 is connected to the ground through a first support 17, the bottom end of the stirring container 10 is connected to the ground through a second support 18, the mounting plate 6 of the quantitative weighing mechanism is connected to the ground through a third support (not marked in the figure), and the bottom end of the material bin 1 is connected to the ground through a fourth support 19. As Figure 1 shown, in order to facilitate the smooth progress of the processes of discharging materials from the new type of material bin, automatic weighing, stirring, and feeding, the ground is set as a stepped structure. The material bin and the quantitative weighing mechanism are located on the topmost step, the stirring mechanism is arranged on the second step, and the feeding chute is arranged on the bottommost ground. A concrete mixer truck is parked on the ground at the end of the feeding chute.

[0031] When this new type is in use, under the control of the PLC controller, the screw conveyor outputs dry-mixed mortar to the feeding pipe. The dry-mixed mortar enters the quantitative weighing mechanism through the feeding pipe. After each weighing groove completes weighing, the roller body rotates clockwise by a set angle. During the rotation, the first solenoid valve is closed, and after rotating in place, the first solenoid valve is opened to conduct weighing for the next weighing groove. In this way, the automatic weighing of all dry-mixed mortar and the feeding into the mixing container are finally completed. During the feeding process, the mixing motor is started, and water continuously enters the mixing container under the control of the flow pump, and finally the addition of the set amount of water is completed. Under the actions of the mixing motor and the vibrator, the preparation of the slurry is finally completed. The prepared finished slurry is discharged through the discharge pipe and finally input into the concrete mixer truck through the feeding chute 15, and is transported to the construction site by the concrete mixer truck.

Claims

1. An integrated intelligent slurry preparation system for cement mixing piles, characterized in that: It includes a PLC controller and a silo for loading dry-mixed mortar. At the bottom of the silo, there is a guiding trough with a V-shaped cross-section and the bottom inclined upward to one side. At the bottom of the guiding trough, there is a screw conveyor for outputting dry-mixed mortar. The high end of the screw conveyor extends out of one side of the silo and is connected with a feeding pipe. The bottom end of the feeding pipe is connected with a quantitative weighing mechanism. The output end of the quantitative weighing mechanism is connected with a mixing container. The mixing container is provided with a mixing mechanism. The side wall of the mixing container is also connected with a quantitative water input mechanism. The bottom of the mixing container is provided with a discharging pipe. The discharging pipe is connected with a feeding chute. The end of the feeding chute is used to be connected with a concrete mixer truck. The PLC controller is electrically connected with a power supply and is configured to control the screw conveyor, the quantitative weighing mechanism, the quantitative water input mechanism, the mixing mechanism, and the discharging pipe.

2. The integrated intelligent slurry-making system for cement mixing piles according to claim 1, characterized in that: The screw conveyor includes a rotating shaft arranged along the bottom of the guiding trough and extending outside the silo. Outside the rotating shaft, there are screw conveyor blades. The part of the rotating shaft outside the silo and outside the screw conveyor blades is sleeved with a discharging cylinder. The end of the discharging cylinder is connected with a feeding pipe. The end of the rotating shaft far from the feeding pipe penetrates through the side wall of the silo and is fixedly connected with the output shaft of a driving motor preset on the outer wall of the silo. The two ends of the rotating shaft are rotatably connected with the side wall of the silo or the inner wall of the discharging cylinder. The driving motor is electrically connected with the PLC controller through a wire.

3. The integrated intelligent slurry-making system for cement mixing piles according to claim 2, characterized in that: The feeding pipe is arranged longitudinally. The quantitative weighing mechanism includes two oppositely arranged mounting plates. Between the two mounting plates, there is a roller body rotatably connected. On the outer wall of the roller body, a plurality of weighing grooves are evenly distributed around the axis. At the bottom of the weighing grooves, there are weighing sensors. The top of the weighing sensors is connected with a storage box. At the bottom end of the feeding pipe, there is a feeding nozzle. The two ends of the central axis of the roller body are rotatably connected with the mounting plates. One end of the central axis of the roller body penetrates through one side of the mounting plate and is fixedly connected with the output shaft of a rotating motor preset on the outer surface of the mounting plate. The rotating motor is electrically connected with the PLC controller through a wire. The weighing sensors are signal-connected with the PLC controller.

4. The integrated intelligent slurry-making system for cement mixing piles according to claim 3, characterized in that: On the side wall of the roller body corresponding to each weighing groove where the weighing sensor is located, there is a display. The display is electrically connected with the weighing sensor. On the upper part of one of the mounting plates, there is a through observation port. The outer port of the observation port is installed with a vision sensor. The observation port is opposite to the display outside the weighing groove being weighed. The vision sensor is signal-connected with the PLC controller through a wire. In the weighing groove, there is also embedded a storage battery for supplying power to the weighing sensor.

5. The integrated intelligent slurry-making system for cement mixing piles according to claim 4, characterized in that: Between the lower parts of the two mounting plates far from the silo, there is also fixedly provided a discharging chute. The high end of the discharging chute is slidably connected with the outer surface of the roller body and is used to be docked with the weighing groove rotating to the high end position of the discharging chute. The low end of the discharging chute is connected with the feeding pipe of the mixing container.

6. The integrated intelligent slurry-making system for cement mixing piles as described in claim 5, characterized in that: The described stirring container is provided with a top cover. The stirring mechanism includes a stirring motor fixedly arranged at the upper end of the top cover. The output shaft of the stirring motor rotatably passes through the top cover and extends into the stirring container. Stirring blades are arranged on the outer wall of the shaft of the output shaft located inside the stirring container. The lower part of the stirring container is integrally connected with a funnel-shaped discharge bin. A discharge pipe is connected to the bottom end of the discharge bin. The stirring motor is electrically connected to the PLC controller through a wire. A vibrator is also arranged on the outer wall of the stirring container. The vibrator is electrically connected to the PLC controller through a wire.

7. The integrated intelligent slurry-making system for cement mixing piles according to claim 6, characterized in that: The feeding pipe is provided with a first solenoid valve, and the discharge pipe is provided with a second solenoid valve. The quantitative water input mechanism includes a water inlet pipe connected to the side wall of the stirring container. The water inlet pipe is connected to the total water inlet pipe through a flow pump. The flow pump, the first solenoid valve, and the second solenoid valve are respectively electrically connected to the PLC controller through wires.

8. The integrated intelligent slurry-making system for cement mixing piles according to claim 7, characterized in that: The bottom end of the feeding chute is connected to the ground through a first support. The bottom end of the stirring container is connected to the ground through a second support. The mounting plate of the quantitative weighing mechanism is connected to the ground through a third support. The bottom end of the material bin is connected to the ground through a fourth support.

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