A building mortar spraying device for construction engineering

Abstract

The application belongs to the technical field of mortar painting, and particularly relates to a building mortar spraying device for building engineering, which comprises a box body, a stirring assembly and a spraying assembly are arranged in the box body, the spraying assembly comprises a mortar pump, a feeding pipe, a discharging pipe and a spray head, the mortar pump is fixedly connected to the side surface of the box body, the feeding pipe and the discharging pipe are connected to the feeding end and the discharging end of the mortar pump respectively, the spray head is connected to the discharging end of the discharging pipe, the feeding end of the feeding pipe is connected to the discharging port at the bottom of the box body, and the stirring assembly is used for stirring the mortar on the bottom upwards. In the application, through the cooperation of the stirring frame and the push plate in the stirring assembly, the mortar on the bottom of the box body can be stirred upwards by the fan-shaped stirring frame, and the bottom mortar can be pushed and stirred by the reciprocating movement of the push plate, so that the mortar deposition and stratification are effectively avoided, the mortar concentration is uniform, and the spraying quality is improved.

Description

Technical Field

[0001] This invention relates to the field of mortar application technology, and more particularly to a building mortar spraying device for construction engineering. Background Technology

[0002] Building mortar is a type of mortar used to bond masonry block materials (bricks, stones, blocks) into a whole. It is composed of inorganic cementitious materials, fine aggregates, and water, and sometimes some admixtures are also added. Its compressive strength is often used as the most important technical performance indicator.

[0003] In construction engineering, mortar spraying equipment is widely used for wall mortar application. Traditional equipment uses a combination of rectangular storage tank and spiral mixer, which has an inherent defect of serious sedimentation and stratification: since mortar is a solid-liquid two-phase mixture, when it is left to stand, the aggregate (sand particles) are subjected to gravity and velocity, resulting in a high-density sediment layer at the bottom of the tank. The viscosity of the upper mortar layer decreases, and problems such as aggregate clogging of the spray gun and mortar segregation occur during spraying, resulting in a wall hollow rate of more than 12%. Summary of the Invention

[0004] Based on the technical problems existing in the prior art, the present invention proposes a building mortar spraying device for building engineering.

[0005] This invention proposes a mortar spraying device for construction engineering, comprising a housing, inside which are installed a stirring assembly and a spraying assembly. The spraying assembly includes a mortar pump, an inlet pipe, an outlet pipe, and a nozzle. The mortar pump is fixedly connected to the side of the housing, and the inlet pipe and outlet pipe are respectively connected to the inlet and outlet ends of the mortar pump. The nozzle is connected to the outlet end of the outlet pipe, and the inlet end of the inlet pipe is connected to the outlet at the bottom of the housing. The stirring assembly is used to turn the bottom mortar upwards and stir it. When mortar is loaded into the housing, the stirring assembly starts working, turning the bottom mortar upwards and stirring it thoroughly to prevent mortar sedimentation and stratification. At the same time, the mortar pump works, drawing the stirred mortar from the outlet at the bottom of the housing through the inlet pipe. After being pressurized by the mortar pump, the mortar is transported to the nozzle through the outlet pipe and finally sprayed onto the required working surface.

[0006] Preferably, the discharge pipe is a flexible pipe, and a handle is installed on the discharge pipe near the nozzle. Because the discharge pipe is flexible, the operator can flexibly adjust the direction of the discharge pipe, thereby changing the spray angle and position of the nozzle. At the same time, the operator can stably control the nozzle by holding the handle, which makes it easy to accurately aim the spray at the work area and improve the convenience of operation and the accuracy of spraying.

[0007] Preferably, the stirring assembly includes two stirring frames rotatably connected to the housing. The stirring frames have a fan-shaped cross-section. Guide frames are fixedly connected to the inner walls of both sides of the housing. A sliding rod is slidably connected between the two guide frames. A push plate is provided on the sliding rod, and the sliding rod passes through a sliding opening on the push plate. The bottom of the housing has an arc-shaped structure. A connecting rod 1 is fixedly sleeved at the end of one of the stirring frames. A connecting rod 2 is rotatably connected to the other end of the connecting rod 1. The other end of the connecting rod 2 is rotatably connected to the sliding rod. A servo motor is fixedly connected to the outer wall of the housing. The output shaft of the servo motor is connected to the end of a corresponding stirring frame. The two stirring frames are synchronized through a transmission mechanism. Rotation; the servo motor starts, and its output shaft drives one of the connected mixing racks to rotate. Under the action of the transmission mechanism, the other mixing rack rotates synchronously. Since the mixing rack has a fan-shaped cross-section and the bottom of the box has an arc-shaped structure, the rotation of the mixing rack can turn the mortar at the bottom of the box upward, realizing the turning of the bottom layer of mortar. At the same time, when one of the mixing racks rotates, it drives the first connecting rod to rotate. The first connecting rod drives the slide rod to slide back and forth along the guide frame through the second connecting rod. The slide rod slides in the sliding mouth of the push plate, and then uses the reciprocating push plate to turn the bottom layer of mortar in the box upward along the arc-shaped bottom wall, which, together with the mixing rack, further improves the uniformity of mortar mixing.

[0008] Preferably, the transmission mechanism includes a synchronous pulley and a synchronous belt. The synchronous pulley is fixedly sleeved on the end of the mixing frame, and the synchronous belt is connected between the two synchronous pulleys. When the servo motor drives one mixing frame to rotate, the synchronous pulley at the end of the mixing frame rotates accordingly. Under the transmission action of the synchronous belt, the other synchronous pulley and the mixing frame connected to it rotate synchronously, thereby ensuring that the rotation direction and speed of the two mixing frames are consistent, and ensuring that the mortar in the box is symmetrically and uniformly stirred.

[0009] Preferably, a building mortar spraying device for construction engineering further includes: a density acquisition module, installed in the lower middle part of the side wall of the box, for real-time monitoring of local density differences in mortar, and generating a density fluctuation coefficient through a control module; a stirring resistance acquisition module, installed on the output shaft of a servo motor, for real-time monitoring of changes in stirring resistance, and generating a torque fluctuation coefficient through a control module; the control module performs comprehensive analysis on the generated density fluctuation coefficient and torque fluctuation coefficient to generate an evaluation coefficient, compares the evaluation coefficient with a pre-set reference threshold, and controls the working state of the stirring component based on the comparison result; the density acquisition module monitors the local density differences of the mortar in the lower middle part of the box in real time, and transmits the monitoring data. The data is sent to the control module, which generates a density fluctuation coefficient based on the data. Simultaneously, the stirring resistance acquisition module monitors the changes in stirring resistance of the servo motor output shaft in real time, transmits the data to the control module, and generates a torque fluctuation coefficient. The control module performs comprehensive analysis and calculation on the density fluctuation coefficient and torque fluctuation coefficient to generate an evaluation coefficient. When the evaluation coefficient is greater than a preset reference threshold, it indicates that the mortar is not mixed evenly or the stirring resistance is too high. The control module controls the servo motor to increase its speed and enhance the stirring intensity of the stirring component. When the evaluation coefficient is less than or equal to the preset reference threshold, it indicates that the mortar is mixed well. The control module controls the stirring component to maintain its current working state to achieve intelligent control of the mortar mixing process.

[0010] Preferably, the output and input terminals of the density acquisition module and the output and input terminals of the stirring resistance acquisition module are electrically connected to the input and output terminals of the control module, respectively, and the output terminal of the control module is electrically connected to the input terminal of the servo motor.

[0011] Preferably, the steps by which the control module controls the working state of the stirring component based on the comparison results are as follows:

[0012] The density acquisition module collects local density differences in mortar; the mixing resistance acquisition module collects changes in mixing resistance; the control module calculates the density fluctuation coefficient, torque fluctuation coefficient, and evaluation coefficient; if Rpg < 0.3: maintain the current oscillation frequency; if 0.3 ≤ Rpg < 0.6: slightly increase the oscillation frequency; if Rpg ≥ 0.6: significantly increase the oscillation frequency and trigger an audible and visual alarm.

[0013] Preferably, the generation logic of the density fluctuation coefficient is as follows:

[0014] Based on the deviation between the actual density and the average density at each time point within time T, a coefficient reflecting the stratification trend of mortar in the vertical direction is calculated.

[0015] Preferably, the generation logic of the torque fluctuation coefficient is as follows:

[0016] Based on the deviation between the actual stirring resistance and the average stirring resistance at each time point within time T, a coefficient reflecting the influence of mortar viscosity on the intensity of mechanical load disturbance is calculated.

[0017] Preferably, the logic for generating the evaluation coefficients is as follows:

[0018] By combining the density fluctuation coefficient and torque fluctuation coefficient with a preset weighting coefficient for comprehensive analysis, an evaluation coefficient is generated to assess the coupling effect between stratified risk and flow resistance.

[0019] Compared with the prior art, the present invention provides a building mortar spraying device for construction engineering, which has the following beneficial effects:

[0020] 1. A mortar spraying device for building construction, which, through the coordinated action of the mixing frame and the push plate in the mixing component, can both use the fan-shaped mixing frame to turn the mortar at the bottom of the box upwards, and push and turn the bottom layer of mortar through the reciprocating motion of the push plate, effectively avoiding mortar sedimentation and stratification, ensuring uniform mortar concentration, and improving spraying quality.

[0021] 2. A building mortar spraying device for construction projects, which adopts a flexible discharge pipe and a handle design, allowing operators to flexibly adjust the spraying angle and position of the nozzle, making it easy to accurately aim at the work area and improving operational convenience and construction efficiency.

[0022] 3. A mortar spraying device for building engineering, wherein a density acquisition module and a mixing resistance acquisition module monitor the mortar status in real time, a control module comprehensively analyzes and generates an evaluation coefficient, and automatically adjusts the working intensity of the stirring component to realize intelligent control of the mortar mixing process, which can both ensure the mixing effect and avoid energy waste. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the first angle structure of a building mortar spraying device for building engineering proposed in this invention.

[0024] Figure 2 This is a schematic diagram of the second angle structure of a building mortar spraying device for building engineering proposed in this invention.

[0025] Figure 3 This is a schematic diagram of the internal structure of a building mortar spraying device for building engineering proposed in this invention.

[0026] Figure 4 This is a schematic diagram of the stirring component structure of a building mortar spraying device for building engineering proposed in this invention;

[0027] Figure 5 This is a system block diagram of a building mortar spraying device for building engineering proposed in this invention.

[0028] In the diagram: 1. Box body; 2. Discharge port; 3. Pulverizer; 4. Feed pipe; 5. Discharge pipe; 6. Nozzle; 7. Handle; 8. Mixing frame; 9. Synchronous pulley; 10. Synchronous belt; 11. Servo motor; 12. Guide frame; 13. Slide rod; 14. Push plate; 15. Slide port; 16. Connecting rod one; 17. Connecting rod two; 18. Density acquisition module; 19. Mixing resistance acquisition module; 20. Control module. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0030] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] Reference Figures 1-5 A building mortar spraying device for construction engineering includes a box body 1. The box body 1 is equipped with a stirring component and a spraying component. The spraying component includes a mortar pump 3, a feed pipe 4, a discharge pipe 5, and a nozzle 6. The mortar pump 3 is fixedly connected to the side of the box body 1. The feed pipe 4 and the discharge pipe 5 are respectively connected to the feed end and the discharge end of the mortar pump 3. The nozzle 6 is connected to the discharge end of the discharge pipe 5. The feed end of the feed pipe 4 is connected to the discharge port 2 at the bottom of the box body 1. The stirring component is used to turn the bottom mortar upward and stir it.

[0032] When in use, mortar is filled into the box 1, and the stirring component is started to turn the mortar at the bottom of the box 1 upward and stir it thoroughly to prevent the mortar from settling and separating. At the same time, the mortar pump 3 works to draw the stirred mortar from the discharge port 2 at the bottom of the box 1 through the feed pipe 4. After being pressurized by the mortar pump 3, the mortar is transported to the nozzle 6 through the discharge pipe 5 and finally sprayed onto the required working surface by the nozzle 6.

[0033] In addition, the discharge pipe 5 can also be a flexible pipe, and a handle 7 is installed on the discharge pipe 5 near the nozzle 6.

[0034] During use, because the discharge pipe 5 is a flexible pipe, the operator can flexibly adjust the direction of the discharge pipe 5, thereby changing the spraying angle and position of the nozzle 6; at the same time, the operator can stably control the nozzle 6 by holding the handle 7, which makes it easy to accurately aim the spraying operation at the work area, improving the convenience of operation and the accuracy of spraying.

[0035] The stirring assembly includes two stirring frames 8 rotatably connected to the housing 1. The stirring frames 8 have a fan-shaped cross-section. Guide frames 12 are fixedly connected to the inner walls on both sides of the housing 1. A slide rod 13 is slidably connected between the two guide frames 12. A push plate 14 is provided on the slide rod 13, and the slide rod 13 passes through the slide opening 15 on the push plate 14. The bottom of the housing 1 has an arc-shaped structure. A connecting rod 16 is fixedly sleeved at the end of one of the stirring frames 8. A connecting rod 17 is rotatably connected to the other end of the connecting rod 16. The other end of the connecting rod 17 is rotatably connected to the slide rod 13. A servo motor 11 is fixedly connected to the outer wall of the housing 1. The output shaft of the servo motor 11 is connected to the end of the corresponding stirring frame 8. The two stirring frames 8 rotate synchronously through a transmission mechanism.

[0036] When in use, the servo motor 11 starts, and its output shaft drives one of the mixing racks 8 connected to it to rotate. Under the action of the transmission mechanism, the other mixing rack 8 rotates synchronously. Since the cross-section of the mixing rack 8 is fan-shaped and the bottom of the box 1 is arc-shaped, the mixing rack 8 can turn the mortar at the bottom of the box 1 upward when it rotates, thus turning the bottom layer of mortar. At the same time, when one of the mixing racks 8 rotates, it drives the connecting rod 16 to rotate. The connecting rod 16 drives the slide rod 13 to slide back and forth along the guide frame 12 through the connecting rod 17. The slide rod 13 slides in the sliding mouth 15 of the push plate 14, and then uses the reciprocating push plate 14 to turn the bottom layer of mortar in the box 1 upward along the arc-shaped bottom wall, which, together with the mixing rack 8, further improves the uniformity of mortar mixing.

[0037] The transmission mechanism includes a synchronous pulley 9 and a synchronous belt 10. The synchronous pulley 9 is fixedly sleeved on the end of the stirring frame 8, and the synchronous belt 10 is connected between the two synchronous pulleys 9.

[0038] When in use, when the servo motor 11 drives one mixing frame 8 to rotate, the synchronous wheel 9 at the end of the mixing frame 8 rotates accordingly. Under the transmission action of the synchronous belt 10, the other synchronous wheel 9 and the mixing frame 8 connected to it rotate synchronously, thereby ensuring that the rotation direction and speed of the two mixing frames 8 are consistent, and ensuring that the mortar in the box 1 is symmetrically and evenly stirred.

[0039] In another embodiment, a building mortar spraying device for construction projects further includes:

[0040] The density acquisition module 18 is installed in the lower part of the side wall of the box 1 to monitor the local density difference of mortar in real time and generate the density fluctuation coefficient through the control module 20.

[0041] The stirring resistance acquisition module 19 is installed on the output shaft of the servo motor 11 to monitor the changes in stirring resistance in real time and generate the torque fluctuation coefficient through the control module 20.

[0042] The control module 20 performs a comprehensive analysis of the generated density fluctuation coefficient and torque fluctuation coefficient to generate an evaluation coefficient. The evaluation coefficient is then compared with a pre-set reference threshold, and the working state of the stirring component is controlled based on the comparison results.

[0043] During use, the density acquisition module 18 monitors the local density differences of the mortar in the lower middle part of the box 1 in real time and transmits the monitoring data to the control module 20. The control module 20 generates a density fluctuation coefficient based on the data. At the same time, the stirring resistance acquisition module 19 monitors the changes in stirring resistance of the output shaft of the servo motor 11 in real time, transmits the data to the control module 20 and generates a torque fluctuation coefficient. The control module 20 performs comprehensive analysis and calculation on the density fluctuation coefficient and the torque fluctuation coefficient to generate an evaluation coefficient. When the evaluation coefficient is greater than the preset reference threshold, it indicates that the mortar is not stirred evenly or the stirring resistance is too high. The control module 20 controls the servo motor 11 to increase its speed and enhance the stirring intensity of the stirring component. When the evaluation coefficient is less than or equal to the preset reference threshold, it indicates that the mortar is stirred well. The control module 20 controls the stirring component to maintain its current working state to achieve intelligent control of the mortar stirring process.

[0044] The output and input terminals of the density acquisition module 18 and the output and input terminals of the stirring resistance acquisition module 19 are electrically connected to the input and output terminals of the control module 20, respectively. The output terminal of the control module 20 is electrically connected to the input terminal of the servo motor 11.

[0045] In another embodiment, the control module 20 performs a comprehensive analysis of the generated density fluctuation coefficient and torque fluctuation coefficient to generate an evaluation coefficient. The evaluation coefficient is then compared with a pre-set reference threshold, and the working state of the agitation component is controlled based on the comparison result. The execution steps are as follows:

[0046] Real-time detection: Density acquisition module 18 collects local density differences in mortar; mixing resistance acquisition module 19 collects changes in mixing resistance;

[0047] Coefficient calculation:

[0048] Density fluctuation coefficient: Characterizes the stratification tendency of mortar in the vertical direction. Dσ approaches 0 → uniform density distribution (ideal state); Dσ increases significantly → increased density difference (settlement occurs).

[0049] The generation logic of the density fluctuation coefficient is as follows:

[0050] S1. The density acquisition module 18 acquires the local actual density of the mortar at different times within time T when the mortar is being mixed by the stirring component. The actual density acquired at time m within time T is calibrated as... m = 1, 2, 3, ..., t, where m is a positive integer;

[0051] S2. Calculate the density fluctuation coefficient. The expression for the calculation is: m is a positive integer;

[0052] S2. Calculate the density fluctuation coefficient. The expression for the calculation is: In the formula,

[0053] t represents the average density over time T; t represents the number of samples taken over time T.

[0054] Torque fluctuation coefficient: quantifies the disturbance intensity of mortar viscosity on mechanical load, τσ → constant stirring resistance (stable fluid state); a significant increase in τσ → local viscous zone hinders motion;

[0055] The generation logic for the torque fluctuation coefficient is as follows:

[0056] S1. The actual mixing resistance at different times within time T during mortar mixing by the mixing resistance acquisition module 19 is obtained, and the actual mixing resistance obtained at time n within time T is calibrated as... n = 1, 2, 3, ..., k, where n is a positive integer;

[0057] S2. Calculate the torque fluctuation coefficient. The expression for the calculation is: In the formula,

[0058] Let T be the average stirring resistance over time T; k is the number of samples taken over time T.

[0059] Evaluation coefficient: Characterizing the strength of the coupling effect between stratification risk and flow resistance, the density fluctuation coefficient and torque fluctuation coefficient are combined with preset weighting coefficients for comprehensive analysis to generate an evaluation coefficient for assessing the coupling effect between stratification risk and flow resistance. This is then analyzed using a formula by control module 20, based on the following formula: In the formula, r_1 and r_2 are density and torque weighting coefficients (e.g., r_1=1.2, r_2=0.8, the specific values ​​need to be dynamically determined based on experimental data).

[0060] Dynamic adjustment: If Rpg<0.3: Maintain the current oscillation frequency, no intervention is required under normal operating conditions; if 0.3≤Rpg<0.6: Increase the oscillation frequency by 20% to suppress initial settlement; if Rpg≥0.6: Increase the oscillation frequency by 40% to trigger an audible and visual alarm and handle severe stratification in an emergency.

[0061] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A building mortar spraying device for construction projects, comprising a housing (1), characterized in that, The box (1) is equipped with a stirring assembly and a spraying assembly. The spraying assembly includes a slurry pump (3), a feed pipe (4), a discharge pipe (5), and a nozzle (6). The slurry pump (3) is fixedly connected to the side of the box (1). The feed pipe (4) and the discharge pipe (5) are respectively connected to the feed end and the discharge end of the slurry pump (3). The nozzle (6) is connected to the discharge end of the discharge pipe (5). The feed end of the feed pipe (4) is connected to the discharge port (2) at the bottom of the box (1). The stirring assembly is used to turn the bottom mortar upward and stir it. The stirring assembly includes two stirring racks (8) rotatably connected to the box (1). The stirring rack (8) has a fan-shaped cross-section. Guide racks (12) are fixedly connected to the inner walls on both sides of the box (1). A sliding rod (13) is slidably connected between the two guide racks (12). A push plate (14) is provided on the sliding rod (13), and the sliding rod (13) passes through the sliding opening (15) on the push plate (14). The bottom of the box (1) has an arc-shaped structure. A connecting rod (16) is fixedly sleeved at the end of one of the stirring racks (8). A connecting rod (17) is rotatably connected to the other end of the connecting rod (16). The other end of the connecting rod (17) is rotatably connected to the sliding rod (13). A servo motor (11) is fixedly connected to the outer wall of the box (1). The output shaft of the servo motor (11) is connected to the end of the corresponding stirring rack (8). The two stirring racks (8) rotate synchronously through a transmission mechanism. Also includes: The density acquisition module (18) is installed in the lower part of the side wall of the box (1) to monitor the local density difference of mortar in real time and generate the density fluctuation coefficient through the control module (20); The stirring resistance acquisition module (19) is installed on the output shaft of the servo motor (11) to monitor the change of stirring resistance in real time and generate the torque fluctuation coefficient through the control module (20); The control module (20) performs a comprehensive analysis of the generated density fluctuation coefficient and torque fluctuation coefficient to generate an evaluation coefficient. The evaluation coefficient is compared with a pre-set reference threshold, and the working state of the stirring component is controlled according to the comparison result.

2. The building mortar spraying equipment for construction projects according to claim 1, characterized in that, The discharge pipe (5) is a flexible pipe, and a handle (7) is installed on the discharge pipe (5) near the nozzle (6).

3. The building mortar spraying equipment for construction projects according to claim 1, characterized in that, The transmission mechanism includes a synchronous pulley (9) and a synchronous belt (10). The synchronous pulley (9) is fixedly sleeved on the end of the stirring frame (8), and the synchronous belt (10) is connected between the two synchronous pulleys (9).

4. The building mortar spraying equipment for construction projects according to claim 1, characterized in that, The output and input ends of the density acquisition module (18) and the output and input ends of the stirring resistance acquisition module (19) are electrically connected to the input and output ends of the control module (20), respectively. The output end of the control module (20) is electrically connected to the input end of the servo motor (11).

5. The building mortar spraying equipment for construction projects according to claim 1, characterized in that, The generation logic of the density fluctuation coefficient is as follows: Based on the deviation between the actual density and the average density at each time point within time T, a coefficient reflecting the stratification trend of mortar in the vertical direction is calculated.

6. The building mortar spraying equipment for construction projects according to claim 1, characterized in that, The generation logic of the torque fluctuation coefficient is as follows: Based on the deviation between the actual stirring resistance and the average stirring resistance at each time point within time T, a coefficient reflecting the influence of mortar viscosity on the intensity of mechanical load disturbance is calculated.

7. The building mortar spraying equipment for construction projects according to claim 1, characterized in that, The logic for generating the evaluation coefficients is as follows: By combining the density fluctuation coefficient and torque fluctuation coefficient with a preset weighting coefficient for comprehensive analysis, an evaluation coefficient is generated to assess the coupling effect between stratified risk and flow resistance.

Images