A high ductility concrete mixing and spraying device and a spraying method thereof

Abstract

The application discloses a high ductility concrete mixing and spraying device and a spraying method thereof. The device comprises a mixing assembly, which is provided with a mixing shaft and mixing blades arranged on the mixing shaft. A movable plate is arranged at the mixing shaft, and a rotatable mixing cylinder is arranged on the movable plate. A spiral conveyor is also arranged on the movable plate. A spraying connector is arranged at the terminal point of the spiral conveyor, and a spraying hose is arranged on the spraying connector. The mixing cylinder is provided with a discharge pipe, and the spiral conveyor is provided with a feeding pipe. The discharge pipe and the feeding pipe are positionally matched and in communication with each other. The mixing cylinder rotates around the axis of the discharge pipe to discharge materials. The mixing cylinder continuously rotates during discharging, and the rotating mixing cylinder can utilize centrifugal force to help push the materials outward, thereby accelerating the discharging speed.

Description

Technical Field

[0001] This invention relates to a high-ductility concrete mixing and spraying device and its spraying method. Background Technology

[0002] In the construction industry, concrete spraying technology is often used for structural reinforcement and repair. Traditional concrete spraying equipment typically faces problems such as low spraying efficiency, low material utilization, and insufficient spray uniformity. This is especially true in the application of high-ductility concrete, which, due to its high toughness and ductility, requires spraying equipment with higher adaptability and reliability. The spraying process for high-ductility concrete places higher demands on the mixing and spraying performance of the equipment; for example, the various components need to be uniformly mixed during the mixing process to ensure that the sprayed concrete achieves the expected performance.

[0003] However, traditional spraying equipment often fails to effectively address the issue of rapid material feeding during transport and spraying. In some cases, the concrete material remains in the pipeline for too long, leading to a decline in the performance of the mixture and affecting the final construction quality. Therefore, this invention proposes a high-ductility concrete mixing and spraying device and its spraying method to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a high-ductility concrete mixing and spraying device and its spraying method to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A high-ductility concrete mixing and spraying device is provided, comprising a mixing assembly, wherein the mixing assembly is provided with a mixing shaft and the mixing shaft is provided with mixing blades. A movable plate is provided at the stirring shaft, and a rotatable stirring cylinder is provided on the movable plate. A screw conveyor is also provided on the movable plate. A spraying joint is provided at the end point of the screw conveyor, and a spraying hose is provided on the spraying joint. The stirring cylinder is provided with a discharge pipe, and the screw conveyor is provided with a feed pipe. The discharge pipe and the feed pipe are matched in position and connected to each other. The stirring cylinder rotates around the axis of the discharge pipe to discharge materials.

[0006] As an improvement to the above technical solution, a support frame is provided on the movable plate, and a support ring is provided on the support frame, with the stirring cylinder rotatably disposed within the support ring.

[0007] As an improvement to the above technical solution, a servo motor is provided on the support frame, and a drive gear is provided on the servo motor; An external gear ring is fixedly fitted on the outer wall of the stirring cylinder, and the drive gear meshes with the external gear ring.

[0008] As an improvement to the above technical solution, a sealing assembly is provided on the discharge pipe, the sealing assembly including a sealing pipe, the sealing pipe being movably connected to the discharge pipe; The discharge pipe is provided with a connecting hole A, and the sealing pipe is provided with a connecting hole B. The stirring cylinder rotates in both directions, so that the connecting holes A and B alternately switch between connected and disconnected states.

[0009] As an improvement to the above technical solution, the sealing assembly further includes a positioning tube, which is rotatably connected to the outer wall of the sealing tube and is also connected to the feed tube.

[0010] As an improvement to the above technical solution, the positioning tube is provided with an adjustment hole, and a pin is provided in the adjustment hole. The pin of the adjustment hole contacts the outer wall of the sealing tube, and the positioning tube is fixedly sleeved on the outer wall of the feed tube.

[0011] As an improvement to the above technical solution, the sealing tube is provided with a movable groove, and the outer wall of the discharge tube is provided with a movable rod; The sealing tube is rotatably sleeved on the outer wall of the discharge pipe, so that the movable rod extends into the movable groove.

[0012] A spraying method based on a high-ductility concrete mixing and spraying device includes the following steps: S1, Displacement Alignment: The moving plate is positioned below the mixing assembly, allowing the mixing shaft to extend into the inner cavity of the mixing cylinder. S2, Rotate to close: Drive the stirring cylinder to rotate in the opposite direction until the connecting hole A and the connecting hole B are no longer connected; S3. Feeding and mixing: The material for preparing high-ductility concrete is introduced into the mixing tank, and at the same time, the mixing shaft drives the mixing blades to rotate to carry out the preparation process. S4. Rotate to open: Drive the stirring cylinder to rotate forward until connecting hole A and connecting hole B are connected; S5. Material preparation and spraying: When S4, rotating open, connecting hole A and connecting hole B are connected, the screw conveyor operates, transporting the prepared material to the spraying joint, and then from the spraying joint to the spraying hose, where the spraying hose performs the spraying process. S6, Accelerate material feeding: In the S5 process of material feeding and spraying, if it is necessary to improve the efficiency of material feeding, continue to rotate the S5 mechanism to drive the mixing cylinder to rotate continuously.

[0013] As an improvement to the above technical solution, in S3, during feeding and mixing, if it is necessary to improve the mixing efficiency, continue to rotate the mixing cylinder continuously by turning off rotation in S2.

[0014] As an improvement to the above technical solution, in S6, accelerated feeding, if it is necessary to continuously prepare high-ductility concrete, the moving plate that is feeding is removed from under the mixing assembly, and another set of moving plates is replaced to alternately prepare high-ductility concrete.

[0015] Compared with the prior art, the beneficial effects of the present invention are: When preparing high-ductility concrete, the moving plate is moved to the bottom of the mixing assembly, and the mixing shaft is inserted into the mixing cylinder. Then, the discharge pipe and the feed pipe are disconnected, and the material is introduced into the mixing cylinder. Then the mixing shaft rotates, and of course, the mixing cylinder also rotates to carry out the preparation process. When feeding, the discharge pipe and the feed pipe are connected, the stirring shaft stops rotating, the stirring cylinder continues to rotate, and the prepared material enters the screw conveyor and is transported to the spraying connector and then guided into the spraying hose for the spraying process. The mixing cylinder set up above rotates continuously during the feeding process. The rotating mixing cylinder can use centrifugal force to help push the material outward, thereby speeding up the feeding speed. The mixing cylinder set up above rotates continuously during the feeding process. The continuous stirring effect of the rotation helps to maintain the uniformity of the material and avoids uneven material properties caused by stratification during feeding. The mixing cylinder set up above rotates continuously during the feeding process. The continuous rotation helps to reduce the material residue on the inner wall of the mixing cylinder, improve the material utilization rate, and help to break up material clumps, preventing the discharge port from being blocked due to material agglomeration. The mixing cylinder, as described above, rotates continuously during the material feeding process. This rotation provides more uniform material to subsequent processes, thereby improving overall processing efficiency and product quality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the support frame of the present invention; Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A; Figure 4 This is a schematic diagram of the structure of the stirring cylinder of the present invention; Figure 5 This is a schematic diagram of the sealing assembly of the present invention; Figure 6 This is a side view of the stirring cylinder of the present invention; Figure 7 For the present invention Figure 6 Sectional view of BB; Figure 8 For the present invention Figure 7 A magnified structural diagram at point C.

[0017] In the diagram: 10. Stirring assembly; 11. Stirring shaft; 12. Stirring blade; 20. Stirring cylinder; 21. External gear ring; 22. Movable rod; 23. Discharge pipe; 24. Connecting hole A; 30. Moving plate; 31. Screw conveyor; 311. Feed pipe; 32. Spraying connector; 33. Spraying hose; 34. Support frame; 35. Gear; 36. Servo motor; 37. Support ring; 40. Sealing assembly; 41. Positioning pipe; 411. Adjustment hole; 42. Sealing pipe; 421. Movable groove; 422. Connecting hole B. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example: like Figure 1-8 As shown, this embodiment proposes a high-ductility concrete mixing and spraying device, including a mixing assembly 10, the mixing assembly 10 being provided with a mixing shaft 11, and a mixing blade 12 being provided on the mixing shaft 11; A movable plate 30 is provided at the stirring shaft 11. A rotatable stirring cylinder 20 is provided on the movable plate 30. A screw conveyor 31 is also provided on the movable plate 30. A spraying connector 32 is provided at the end point of the screw conveyor 31. A spraying hose 33 is provided on the spraying connector 32. The stirring cylinder 20 is provided with a discharge pipe 23. The screw conveyor 31 is provided with a feed pipe 311. The discharge pipe 23 and the feed pipe 311 are matched in position and connected to each other. The stirring cylinder 20 rotates around the axis of the discharge pipe 23 to discharge materials.

[0020] In this case, the bottom of the movable plate 30 is equipped with multiple sets of universal wheels, which can be moved during the mixing process to ensure thorough mixing. The spraying joint 32 uses compressed air as a power source. The pneumatic system can use a compressor to provide high-pressure air to push the high-ductility concrete through the spraying hose 33 and spray it out of the nozzle. The stirring component 10 is existing technology, specifically referring to the stirring device proposed in CN116674088A. Of course, it can also be replaced by a gas stirring device for stirring.

[0021] In this embodiment, when preparing high ductility concrete, the moving plate 30 is moved to the bottom of the mixing assembly 10, and the mixing shaft 11 is extended into the mixing cylinder 20. Then, the discharge pipe 23 and the feed pipe 311 are disconnected, and the material is introduced into the mixing cylinder 20. Then the mixing shaft 11 rotates, and of course, the mixing cylinder 20 also rotates to carry out the preparation process. When feeding, the discharge pipe 23 and the feed pipe 311 are connected. At the same time, the stirring shaft 11 stops rotating, while the stirring cylinder 20 continues to rotate. The prepared material enters the screw conveyor 31, is conveyed to the spraying connector 32, and is then introduced into the spraying hose 33 for the spraying process. The stirring cylinder 20 configured as described above rotates continuously during the feeding process. The rotating stirring cylinder 20 can use centrifugal force to help push the material outward, thereby accelerating the feeding speed. The stirring cylinder 20 configured above rotates continuously during the feeding process. The continuous stirring action of the material during the rotation helps to maintain the uniformity of the material and avoids uneven material properties caused by stratification during feeding. The mixing cylinder 20 configured as described above rotates continuously during the feeding process. This continuous rotation helps reduce material residue on the inner wall of the mixing cylinder 20, improves material utilization, and helps break up material clumps, preventing the discharge port from becoming blocked due to material agglomeration. The mixing cylinder 20, as described above, rotates continuously during the material feeding process. This rotation provides more uniform material for subsequent processes, thereby improving overall processing efficiency and product quality.

[0022] Specifically, the movable plate 30 is provided with a support frame 34, the support frame 34 is provided with a support ring 37, and the stirring cylinder 20 is rotatably disposed within the support ring 37.

[0023] In this embodiment, the support ring 37 facilitates the rotation of the stirring cylinder 20.

[0024] Specifically, a servo motor 36 is provided on the support frame 34, and a drive gear 35 is provided on the servo motor 36; The outer wall of the stirring cylinder 20 is fixedly fitted with an outer gear ring 21, and the drive gear 35 meshes with the outer gear ring 21.

[0025] In this embodiment, the engagement between the external gear ring 21 and the gear 35 facilitates the rotation of the stirring cylinder 20, while the servo motor 36 enhances the driving power.

[0026] Specifically, a sealing assembly 40 is provided on the discharge pipe 23, the sealing assembly 40 including a sealing pipe 42, the sealing pipe 42 being movably connected to the discharge pipe 23; The discharge pipe 23 is provided with a connecting hole A24, and the sealing pipe 42 is provided with a connecting hole B422. The stirring cylinder 20 rotates in both directions, so that the connecting hole A24 and the connecting hole B422 alternately switch between connected and disconnected states.

[0027] In this embodiment, during the stirring process, the connecting holes A24 and B422 are not connected, but during the discharging process, the connecting holes A24 and B422 are connected.

[0028] Specifically, the sealing assembly 40 also includes a positioning tube 41, which is rotatably connected to the outer wall of the sealing tube 42, and is also connected to the feed tube 311.

[0029] In this embodiment, the positioning tube 41 facilitates the introduction of materials into the inner cavity of the screw conveyor 31.

[0030] Specifically, the positioning tube 41 has an adjustment hole 411, and a pin is provided in the adjustment hole 411. The pin of the adjustment hole 411 contacts the outer wall of the sealing tube 42, and the positioning tube 41 is fixedly sleeved on the outer wall of the feed tube 311.

[0031] In this embodiment, the pin in the adjustment hole 411 can facilitate the increase of the friction between the positioning tube 41 and the sealing tube 42, prevent the sealing tube 42 from rotating with the discharge tube 23, and facilitate the alternating switching of the connecting hole A24 and the connecting hole B422 in the connected and unconnected states.

[0032] Specifically, the sealing tube 42 is provided with a movable groove 421, and the outer wall of the discharge tube 23 is provided with a movable rod 22; The sealing tube 42 is rotatably sleeved on the outer wall of the discharge tube 23, so that the movable rod 22 extends into the movable groove 421.

[0033] In this embodiment, when the stirring cylinder 20 rotates to improve stirring efficiency, the stirring cylinder 20 rotates in the opposite direction. By rotating the stirring cylinder 20 and the stirring shaft 11 simultaneously, the stirring efficiency is improved. At the same time, when the stirring cylinder 20 rotates in the opposite direction, the discharge pipe 23 on the stirring cylinder 20 drives the movable rod 22 to rotate. Simultaneously, the sealing pipe 42 is manually pressed to prevent the sealing pipe 42 from rotating with the stirring cylinder 20, causing the movable rod 22 to displace in the movable groove 421. When the movable rod 22 contacts one side wall of the movable groove 421, the connecting holes A24 and B422 are misaligned, thus making the connecting holes A24 and B422 disconnected. Afterwards, because the movable rod 22 contacts one side wall of the movable groove 421, the positioning pipe 41 will rotate with the discharge pipe 23, which keeps the connecting holes A24 and B422 disconnected. This allows the stirring cylinder 20 and the stirring shaft 11 to rotate simultaneously, thereby improving the stirring efficiency. When feeding material, as the mixing cylinder 20 rotates in the forward direction, the discharge pipe 23 on the mixing cylinder 20 drives the movable rod 22 to rotate. At the same time, the sealing pipe 42 is manually pressed to prevent it from rotating with the mixing cylinder 20. This causes the movable rod 22 to move within the movable groove 421. When the movable rod 22 contacts the other side wall of the movable groove 421, the connecting holes A24 and B422 overlap, thus connecting them. Subsequently, because the movable rod 22 contacts the other side wall of the movable groove 421, the positioning pipe 41 rotates with the discharge pipe 23, keeping the connecting holes A24 and B422 connected. This allows the mixing cylinder 20 to rotate and increases the feeding speed through centrifugal force.

[0034] A spraying method based on a high-ductility concrete mixing and spraying device includes the following steps: S1, Displacement Alignment: The movable plate 30 is moved to the underside of the stirring assembly 10, and the stirring shaft 11 is inserted into the inner cavity of the stirring cylinder 20. S2, Rotate to close: Drive the stirring cylinder 20 to rotate in the opposite direction until the connecting hole A24 and the connecting hole B422 are no longer connected; S3. Feeding and mixing: The material for preparing high-ductility concrete is introduced into the mixing tank 20, while the mixing shaft 11 drives the mixing blades 12 to rotate, thus carrying out the preparation process. S4. Rotate to open: Drive the stirring cylinder 20 to rotate in the forward direction until the connecting hole A24 and the connecting hole B422 are connected; S5. Material preparation and spraying: When S4, the rotating opening connecting hole A24, and the connecting hole B422 are connected, the screw conveyor 31 operates, conveying the prepared material to the spraying joint 32, and then from the spraying joint 32 to the spraying hose 33, where the spraying process is carried out. S6, Accelerate material feeding: In S5, during material feeding and spraying, if it is necessary to improve the efficiency of material feeding, continue to rotate and start S4 to drive the stirring cylinder 20 to rotate continuously.

[0035] In this embodiment, the above steps allow for material feeding while maintaining stirring, which improves feeding efficiency and helps maintain the material's state.

[0036] Specifically, in S3, during feeding and mixing, if it is necessary to improve the mixing efficiency, continue to rotate the mixing cylinder 20 continuously by turning off rotation in S2.

[0037] In this embodiment, the stirring efficiency can be improved by rotating the stirring cylinder 20 and the stirring shaft 11 simultaneously.

[0038] Specifically, in S6, accelerated feeding, if it is necessary to continuously prepare high-ductility concrete, the moving plate 30 that is feeding is removed from the mixing assembly 10, and another set of moving plates 30 is replaced to alternately prepare high-ductility concrete.

[0039] In this embodiment, the reverse rotation of the stirring cylinder 20 facilitates the material feeding process.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-ductility concrete mixing and spraying device, characterized in that: A high-ductility concrete mixing and spraying device includes a mixing assembly (10), the mixing assembly (10) is provided with a mixing shaft (11), and the mixing shaft (11) is provided with mixing blades (12). A movable plate (30) is provided at the stirring shaft (11), and a rotatable stirring cylinder (20) is provided on the movable plate (30). A screw conveyor (31) is also provided on the movable plate (30). A spraying connector (32) is provided at the end of the screw conveyor (31). A spraying hose (33) is provided on the spraying connector (32). A discharge pipe (23) is provided on the stirring cylinder (20). A feed pipe (311) is provided on the screw conveyor (31). The discharge pipe (23) and the feed pipe (311) are matched in position and connected to each other. The stirring cylinder (20) rotates around the axis of the discharge pipe (23) to discharge materials. A sealing assembly (40) is provided on the discharge pipe (23), the sealing assembly (40) includes a sealing pipe (42), and the sealing pipe (42) is movably connected to the discharge pipe (23); The discharge pipe (23) is provided with a connecting hole A (24), and the sealing pipe (42) is provided with a connecting hole B (422). The stirring cylinder (20) rotates in both directions, so that the connecting hole A (24) and the connecting hole B (422) alternately switch between connected and unconnected states. The sealing assembly (40) also includes a positioning tube (41), which is rotatably connected to the outer wall of the sealing tube (42), and the positioning tube (41) is also connected to the feed tube (311); The positioning tube (41) is provided with an adjustment hole (411), and a pin is provided in the adjustment hole (411). The pin of the adjustment hole (411) contacts the outer wall of the sealing tube (42), and the positioning tube (41) is fixedly sleeved on the outer wall of the feed tube (311). The sealing tube (42) is provided with a movable groove (421), and the outer wall of the discharge tube (23) is provided with a movable rod (22). The sealing tube (42) is rotatably sleeved on the outer wall of the discharge tube (23), so that the movable rod (22) extends into the movable groove (421).

2. The high-ductility concrete mixing and spraying device according to claim 1, characterized in that: The movable plate (30) is provided with a support frame (34), the support frame (34) is provided with a support ring (37), and the stirring cylinder (20) is rotatably disposed inside the support ring (37).

3. The high-ductility concrete mixing and spraying device according to claim 2, characterized in that: A servo motor (36) is provided on the support frame (34), and a drive gear (35) is provided on the servo motor (36). The outer wall of the stirring cylinder (20) is fixedly fitted with an external gear ring (21), and the drive gear (35) meshes with the external gear ring (21).

4. A spraying method based on a high-ductility concrete mixing and spraying device according to any one of claims 1-3, characterized in that: Includes the following steps: S1, Displacement Alignment: The movable plate (30) is moved to the underside of the stirring assembly (10), and the stirring shaft (11) is inserted into the inner cavity of the stirring cylinder (20); S2, Rotate to close: Drive the stirring cylinder (20) to rotate in the opposite direction until the connecting hole A (24) and the connecting hole B (422) are no longer connected; S3. Feeding and mixing: The material for preparing high-ductility concrete is introduced into the mixing tank (20), and at the same time, the mixing shaft (11) drives the mixing blades (12) to rotate to carry out the preparation process; S4. Rotate to open: Drive the stirring cylinder (20) to rotate in the forward direction until the connecting hole A (24) and the connecting hole B (422) are connected; S5. Material preparation and spraying: When S4, the rotating opening connecting hole A (24) and connecting hole B (422) are connected, the screw conveyor (31) operates, conveying the prepared material to the spraying connector (32), and then from the spraying connector (32) to the spraying hose (33), where the spraying hose (33) performs the spraying process. S6, Accelerate material feeding: In S5, during material feeding and spraying, if it is necessary to improve the efficiency of material feeding, continue to rotate and start S4, driving the stirring cylinder (20) to rotate continuously.

5. A spraying method based on a high-ductility concrete mixing and spraying device according to claim 4, characterized in that: In S3, during feeding and mixing, if it is necessary to improve the mixing efficiency, continue to rotate and close the rotation in S2, driving the mixing cylinder (20) to rotate continuously.

6. A spraying method based on a high-ductility concrete mixing and spraying device according to claim 4, characterized in that: In S6, during accelerated feeding, if it is necessary to continuously prepare high-ductility concrete, the moving plate (30) that is feeding is removed from under the mixing assembly (10), and another set of moving plates (30) is replaced to alternately prepare high-ductility concrete.

Images