Composite production equipment and production method of powdery accelerator for sprayed concrete based on modification

Abstract

The invention discloses composite production equipment and a production method for a powdery accelerator for sprayed concrete based on modification, and relates to the technical field of composite batching and feeding. The composite production equipment is technically characterized by comprising a mounting frame, supporting seats are symmetrically mounted at the bottom end of the mounting frame, and a conveying mechanism is jointly mounted above the two supporting seats; the automatic feeding device comprises a material conveying mechanism, a transmission component is installed at one end of the material conveying mechanism, a rotary material taking mechanism is installed on one side of the lower portion of the material conveying mechanism, and a quantitative material taking mechanism is arranged on the inner side of the rotary material taking mechanism. According to the feeding device for the composite ingredients, accurate control over the single-time feeding amount can be achieved, the material shaking component is arranged, in the material taking process, the composite ingredients can be taken more evenly and more compactly, in the feeding process, the composite ingredients can be fully separated, and the situation that the adding accuracy of the composite ingredients is affected due to the fact that the composite ingredients have many residues is avoided.

Description

Technical Field

[0001] This invention relates to the field of production equipment technology, specifically to composite production equipment based on modified powdered quick-setting agent for shotcrete. Background Technology

[0002] In the production of powdered accelerators for shotcrete, improving the overall performance of the product (such as shortening setting time, increasing early strength, and optimizing compatibility with cementitious materials), increasing production efficiency, and reducing energy costs are key objectives pursued by enterprises. The composite production and modification technology of powdered accelerators is the core means to improve their application effectiveness—precise compounding of multiple components can achieve synergistic optimization of rapid setting effect and later strength, while modification treatment can effectively improve the dispersibility of accelerator particles and reduce agglomeration, thereby enhancing their compatibility and stability in shotcrete, ensuring the quality of shotcrete construction and structural safety.

[0003] However, to fully leverage the synergistic advantages of composite production and modification, precise control of the feed amount of each component, the amount of modifier added, and the timing of addition, while ensuring the continuity and stability of the production process, has become a core technical challenge in the production of powdered accelerators. If the feed amount of each composite component deviates too much, or if the modifier is insufficient, it will lead to an imbalance in the performance of the accelerator, resulting in problems such as excessively long setting time and insufficient early strength, failing to meet the construction requirements of emergency repairs and tunnel support in shotcrete applications. Conversely, if the modifier is added excessively, it not only wastes resources and increases production costs but may also cause potential problems such as reduced strength and durability in shotcrete in the later stages. Furthermore, excessive modifier may damage the surface structure of the accelerator particles, affecting its core accelerator function.

[0004] Existing powdered accelerator production equipment mostly adopts a traditional segmented production mode. The integration of compounding and modification processes is not smooth, and the control of feed rate and modifier addition amount largely relies on manual operation or simple metering devices, which are greatly affected by human factors and make it difficult to ensure the accuracy and consistency of parameter control. In addition, existing equipment generally lacks process coordination and control mechanisms, which easily leads to problems such as material accumulation, uneven mixing, and insufficient modification. This results in poor production continuity and large fluctuations in product quality, which cannot meet the needs of modern large-scale, high-precision powdered accelerator production. In particular, it is difficult to adapt to the stringent requirements of modification processes for material state and additive control, thus restricting the large-scale and standardized production of powdered accelerators for high-performance shotcrete. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a composite production equipment for powdered quick-setting agents for shotcrete based on modified powders, which can achieve automatic, precise, and stable addition of composite ingredients.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a composite production equipment for powdered quick-setting agent for modified shotcrete, including a mounting frame, with support seats symmetrically mounted on the bottom end of the mounting frame, a material conveying mechanism mounted above the two support seats, a transmission component mounted on one end of the material conveying mechanism, a rotary material taking mechanism mounted on one side below the material conveying mechanism, and a quantitative material taking mechanism provided on the inner side of the rotary material taking mechanism.

[0007] The material conveying mechanism includes a composite material conveying pipe that is installed together on the two support bases, and an end cap is installed at one end of the composite material conveying pipe;

[0008] The rotary material handling mechanism includes a mounting housing installed below the outer wall of the end cap, and a rotary feeder is rotatably mounted on the inner side of the mounting housing;

[0009] The quantitative feeding mechanism includes a feeding trough opened on the outer wall of the rotary feeder, a drag plate slidably installed on the inner side of the feeding trough, a sliding rod installed at each of the four corners of the bottom end of the drag plate, and a spring sleeved on the outer wall of the sliding rod.

[0010] The bottom end of the material sling is symmetrically equipped with a material shaking component for striking the material sling.

[0011] Preferably, the conveying mechanism further includes a reducer installed at the other end of the composite batching conveying pipe. A motor is installed at the input flange on one side of the reducer, and a rotating rod is connected to the output shaft of the reducer. A spiral feeding blade is installed on the outer wall of the rotating rod and on the inner side of the composite batching conveying pipe. A feeding area is installed above the middle of the outer wall of the composite batching conveying pipe, and a discharging area is opened at the connection between the outer wall of the composite batching conveying pipe and the feeding area.

[0012] Preferably, the rotating material handling mechanism further includes mounting seats fixed to both sides of the upper end of the mounting housing, mounting bosses fixed on the outer wall of the end cover corresponding to the mounting seats, material handling holes opened on the outer wall of the end cover corresponding to the mounting housing, fitting notches opened on the upper ends of both sides of the mounting housing corresponding to the end cover, and a discharge port opened at the bottom end of the mounting housing.

[0013] Preferably, the opening size of the discharge port is larger than the opening size of the feeding trough, so that the feeding trough can be rotated to the discharge port without affecting the feeding of the internal compound ingredients. A transmission rod is rotatably installed on one side of the housing, and the transmission rod is fixedly connected to the rotating shaft end of the rotary feeder, which is used to drive the rotary feeder to rotate and feed the material.

[0014] Preferably, the transmission component includes a drive pulley installed at one end of the rotating rod, a driven pulley installed at one end of the transmission rod corresponding to the drive pulley, and a transmission belt is fitted on the outer walls of the drive pulley and the driven pulley.

[0015] Preferably, the bottom end of the material receiving trough is provided with a sliding hole for use with a sliding rod.

[0016] Preferably, the material shaking component includes a fixed base installed at the bottom edge of the material dragging plate, a transmission rod two rotatably installed on the inner side of the fixed base, a friction roller installed in the middle of the outer wall of the transmission rod two, a rotating disk installed at both ends of the outer wall of the transmission rod two, a plurality of actuating heads provided on the outer wall of the rotating disk, a vibrating arm installed at the middle of the bottom end of the material dragging plate and corresponding to the rotating disk, a contact head installed at one end of the vibrating arm and corresponding to the actuating head, and a friction zone provided on the inner wall of the material picking groove and corresponding to the friction roller.

[0017] Preferably, the friction roller is in contact with the friction area, the plurality of actuating heads are evenly distributed in a ring, the cross-section of the actuating head and the contact head are both teardrop-shaped, the vibrating arm is arc-shaped, and the vibrating arm is made of elastic material.

[0018] Compared with existing technologies, this invention provides a composite production equipment for powdered quick-setting agents for shotcrete based on modification, which has the following beneficial effects: The setting of each core material feeding mechanism in this equipment can significantly improve the accuracy of composite ingredient addition and production continuity: The rotating material feeding mechanism realizes continuous automatic feeding of composite ingredients, effectively avoiding the intermittent drawbacks of traditional feeding modes and adapting to the high-efficiency requirements of large-scale production; The quantitative material feeding mechanism can accurately control the amount of material added at one time, ensuring the proportion accuracy of each composite component and avoiding product performance fluctuations caused by feeding deviations from the source; The shaking component plays a dual optimization role. During the material feeding stage, it can make the composite ingredients be evenly stressed, ensuring the stability of the material feeding amount. During the feeding stage, it can promote the material to fully detach from the material feeding component, thoroughly reducing material residue and eliminating the interference of residue accumulation on the accuracy of subsequent feeding, further improving the reliability of composite ingredient addition, and laying a solid foundation for the stable development of subsequent modification processes and the guarantee of the comprehensive performance of the final product. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the bottom view after the housing of the present invention has been disassembled;

[0021] Figure 3 This is a cross-sectional view of the composite ingredient conveying pipe and the feeding area of ​​the present invention;

[0022] Figure 4 This is a schematic diagram of the structure at the mounting housing of the present invention;

[0023] Figure 5 A cross-sectional view of the mounting housing of the present invention;

[0024] Figure 6 for Figure 5Another perspective illustration;

[0025] Figure 7 This is a schematic diagram of the bottom structure of the material dragging plate of the present invention;

[0026] Figure 8 for Figure 7 Enlarged view of point A in the middle;

[0027] Figure 9 This is a cross-sectional schematic diagram of the housing of the present invention.

[0028] In the diagram: 1. Mounting bracket; 11. Support base;

[0029] 2. Composite batching and conveying pipe; 21. Reducer; 22. Motor; 23. Feeding area; 24. End cap; 25. Rotating rod; 26. Spiral feeder blades; 27. Discharge area;

[0030] 3. Driving pulley; 31. Driven pulley; 32. Transmission belt;

[0031] 4. Rotary material handling mechanism; 41. Mounting boss; 42. Mounting housing; 43. Mounting base; 44. Material handling hole; 45. Rotary feeder; 46. Transmission rod one; 47. Fitting notch; 48. Discharge port;

[0032] 5. Feed chute; 51. Material tray; 52. Sliding rod; 53. Spring; 54. Adjusting bolt;

[0033] 6. Shaking component; 61. Friction zone; 62. Fixed base; 63. Transmission rod two; 64. Friction roller; 65. Rotary disk; 66. Actuating head; 67. Vibrating arm; 68. Contact head. Detailed Implementation

[0034] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0035] Please see Figure 1-9 This invention provides a technical solution for a composite production equipment based on modified powdered quick-setting agent for shotcrete:

[0036] Example 1: A composite production equipment for powdered quick-setting agent for modified shotcrete includes a mounting frame 1. Support seats 11 are symmetrically installed at the bottom of the mounting frame 1. A material conveying mechanism is installed above the two support seats 11. A transmission component is installed at one end of the material conveying mechanism. A rotary material taking mechanism 4 is installed on one side below the material conveying mechanism. A quantitative material taking mechanism is provided inside the rotary material taking mechanism 4.

[0037] The material conveying mechanism includes a composite material conveying pipe 2 that is installed on two support bases 11 together, and an end cap 24 is installed at one end of the composite material conveying pipe 2;

[0038] The rotary material handling mechanism 4 includes a mounting housing 42 installed below the outer wall of the end cover 24, and a rotary feeder 45 is rotatably mounted on the inner side of the mounting housing 42.

[0039] The quantitative feeding mechanism includes a feeding trough 5 opened on the outer wall of the rotary feeder 45. A drag plate 51 is slidably installed on the inner side of the feeding trough 5. A sliding rod 52 is installed at each of the four corners of the bottom end of the drag plate 51. A spring 53 is sleeved on the outer wall of the sliding rod 52.

[0040] A shaking component 6 is symmetrically installed at the bottom end of the drag plate 51 for striking the drag plate 51.

[0041] The material conveying mechanism also includes a reducer 21 installed at the other end of the composite material conveying pipe 2. A motor 22 is installed at the input flange on one side of the reducer 21. A rotating rod 25 is connected to the output shaft of the reducer 21. A spiral feeding blade 26 is installed on the outer wall of the rotating rod 25 and inside the composite material conveying pipe 2. A feeding area 23 is installed above the middle of the outer wall of the composite material conveying pipe 2. A discharging area 27 is opened on the outer wall of the composite material conveying pipe 2 and at the connection with the feeding area 23. The spiral feeding blade 26 is used to realize the automatic conveying of composite materials.

[0042] In embodiment 2, the rotary material handling mechanism 4 also includes mounting seats 43 fixed to both sides of the upper end of the mounting housing 42, mounting bosses 41 fixed on the outer wall of the end cover 24 corresponding to the mounting seats 43, material handling holes 44 opened on the outer wall of the end cover 24 corresponding to the mounting housing 42, fitting notches 47 opened on the upper ends of both sides of the mounting housing 42 corresponding to the end cover 24, and a discharge port 48 opened at the bottom end of the mounting housing 42. The opening size of the discharge port 48 is larger than the opening size of the material handling groove 5, so that the material handling groove 5 can be rotated to the discharge port 48 without affecting the feeding of the internal compound ingredients. A transmission rod 46 is rotatably mounted on one side of the mounting housing 42. The transmission rod 46 is fixedly connected to the rotating shaft end of the rotary feeder 45 and is used to drive the rotary feeder 45 to rotate and feed materials.

[0043] The transmission components include a drive pulley 3 installed at one end of the rotating rod 25, and a driven pulley 31 installed at one end of the transmission rod 46 corresponding to the drive pulley 3. The outer walls of the drive pulley 3 and the driven pulley 31 are jointly fitted with a transmission belt 32 to provide material feeding driving force.

[0044] In embodiment three, the bottom end of the material feeding trough 5 is provided with a sliding hole that works in conjunction with the sliding rod 52. An adjusting bolt 54 is provided below one of the sliding holes. By adjusting the position of the adjusting bolt 54, the amount of material fed in a single operation can be controlled. The two ends of the spring 53 are fixedly connected to the drag plate 51 and the rotary feeder 45, respectively. The sliding design of the drag plate 51, together with the sliding rod 52 and the spring 53, can better and more fully push out the compound material fed in a single operation.

[0045] In embodiment four, the material shaking component 6 includes a fixed base 62 installed at the bottom edge of the material dragging plate 51. A transmission rod 63 is rotatably mounted on the inner side of the fixed base 62. A friction roller 64 is installed in the middle of the outer wall of the transmission rod 63. Rotary disks 65 are installed at both ends of the outer wall of the transmission rod 63. Multiple actuating heads 66 are provided on the outer wall of the rotating disks 65. Vibrating arms 67 are installed at the bottom center of the material dragging plate 51, corresponding to the rotating disks 65. A contact head 68 is installed at one end of the vibrating arm 67, corresponding to the actuating head 66. A material picking groove 5 is provided on the inner wall, corresponding to the friction roller 64. The design includes a friction zone 61, which ensures that the material tray 51 can stably drive the friction roller 64 to rotate during its up-and-down movement. The friction roller 64 fits into the friction zone 61. Multiple actuating heads 66 are evenly distributed in a ring. The cross-sections of the actuating heads 66 and the contact heads 68 are both teardrop-shaped. The vibrating arm 67 is arc-shaped and made of elastic material. The teardrop-shaped design allows for better contact between the vibrating arms and provides a larger energy storage stroke, enabling the vibrating arm 67 to better vibrate the material tray 51, thus facilitating better material picking and unloading.

[0046] In practical use, this invention serves as a composite production equipment for powdered quick-setting agents used in modified shotcrete. During operation, the composite ingredients (in powder form) are first added through the feeding area 23. The motor 22 is controlled by an external control unit to rotate. After speed adjustment by the reducer 21, the rotating rod 25 and the spiral feeding blade 26 are driven to rotate, thereby realizing the automatic conveying of the composite ingredients and conveying them to the end cover 24. As the rotating rod 25 rotates, it also drives the drive pulley 3 to rotate. With the cooperation of the driven pulley 31 and the transmission belt 32, the transmission rod 46 and the rotating feed seat 45 rotate synchronously.

[0047] When the feeding trough 5 rotates to the top, the compound material in the end cap 24 will also enter the feeding trough 5. The gravity of the compound material will exert a pressure on the drag plate 51, causing the drag plate 51 and the sliding rod 52 to slide down and compress the spring 53. At the same time, due to the change in the feeding space, more compound material can be obtained. Secondly, the downward movement distance of the sliding rod 52 is adjusted and limited by the adjusting bolt 54, thereby achieving more precise feeding control.

[0048] During the downward movement of the material drag plate 51, the friction roller 64 will rub against the friction area 61 and drive the friction roller 64 to rotate. The rotation of the friction roller 64 will drive the transmission rod 63, the rotating disk 65 and the agitator head 66 to rotate synchronously. During the rotation of the agitator head 66, it will contact the contact head 68 and agitate the contact head 68, and pull the vibrating arm 67 to deform. After one of the agitators 66 separates from the contact head 68, due to the rebound force of the vibrating arm 67, the vibrating arm 67 will vibrate back and forth to a certain extent and transmit the vibration force to the material drag plate 51. Thus, with the help of the vibration force, the composite material taken out of the material taking trough 5 is more uniform.

[0049] When the feeding trough 5 rotates to the bottom, the compound material can fall from the discharge port 48, completing the feeding of the compound material. At this time, the compressed spring 53 will generate a thrust on the drag plate 51 due to the loss of pressure, pushing the drag plate 51 to move outward, helping the compound material to be fully separated. During the movement of the drag plate 51, the friction roller 64 will also rotate in the opposite direction to before, which will also cause the vibrating arm 67 to vibrate, further helping the compound material at the drag plate 51 to be fully separated.

[0050] Example 5:

[0051] A method for producing a composite powdered accelerator for shotcrete, using the aforementioned equipment, specifically includes the following steps:

[0052] S1. Check the connection status of each component of the equipment to ensure smooth transmission between the conveying mechanism and the rotary material handling mechanism 4. According to the target product formula, set the downward stroke of the sliding rod 52 by rotating the adjusting bolt 54 to accurately calibrate the single material handling amount. Put the uniform powder mixture of the composite ingredients, mainly aluminates, carbonates and other quick-setting components and strength-promoting and setting-regulating auxiliary components, into the feeding hopper for later use. Place the modifiers, such as silane coupling agents, stearates and other powders or atomized liquids, into a separate modifier addition system for later use.

[0053] S2. Start motor 22, set speed to 50-200 rpm, adjust output torque through reducer 21, compound ingredients are continuously fed into compound ingredient conveying pipe 2 from feeding area 23, and pushed by rotating spiral feeding blades 26, smoothly conveyed along the pipeline to end cover area 24.

[0054] S3. When the motor 22 drives the rotating rod 25 to rotate, it synchronously drives the transmission rod 46 and the rotating feed seat 45 to rotate at a certain speed ratio through the transmission of the driving pulley 3, the transmission belt 32 and the driven pulley 31. When the feeding groove 5 on the rotating feed seat 45 rotates to align with the feeding hole 44 on the end cover 24, the compound material enters the feeding groove 5 under the action of gravity and a slight positive pressure. The gravity of the material presses the drag plate 51 down and compresses the spring 53 until the lower end of the sliding rod 52 contacts the adjusting bolt 54 for limit. At this time, the volume of the material filled in the feeding groove 5 is the set single feeding amount. During the downward movement, the friction roller 64 at the bottom of the material dragging plate 51 generates rolling friction with the friction area 61 on the inner wall of the material picking trough 5, driving the rotating disk 65 to rotate. The agitator 66 on the disk periodically agitates the contact head 68 at the end of the vibrating arm 67, causing the vibrating arm 67 to vibrate elastically and transmit the vibration to the material dragging plate 51, thereby achieving the compaction of the material in the trough, eliminating gaps, and ensuring that the material is picked up densely and accurately.

[0055] S4. The feeding trough 5 carrying the quantitative ingredients rotates downward with the rotating feeder 45 and aligns with the discharge port 48 at the bottom of the mounting housing 42. At this time, the feeding pressure on the drag plate 51 is released, the compressed spring 53 releases its elasticity, and pushes the drag plate 51 to move upward along the sliding rod 52 to reset, smoothly pushing out the ingredients in the feeding trough 5 and completely discharging them through the discharge port 48. During the upward reset process of the drag plate 51, the shaking component 6 works again to generate auxiliary vibration to ensure that no ingredients are left behind. The quantitative compound ingredients discharged from the discharge port 48 are introduced into the downstream continuous mixer or modification processing chamber. At the same time, through an independent metering device such as a micro screw feeder or atomizing nozzle, a predetermined amount of modifier is added synchronously and at a fixed point to the falling compound ingredient stream to achieve synchronous compounding of the compound ingredients and modifier.

[0056] S5. Continue running the equipment and repeat steps S2 to S4 to achieve continuous, quantitative, and intermittent feeding of the compound ingredients, and match the addition of the modifier in terms of timing and quantity ratio. The compounded and modified mixture then enters the subsequent homogenization, drying (if necessary), and packaging processes to finally obtain a high-performance powdered quick-setting agent product.

[0057] The above are merely specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of the present invention.

Claims

1. A composite production equipment for powdered quick-setting agent for shotcrete, comprising a mounting frame (1), wherein support seats (11) are symmetrically mounted on the bottom end of the mounting frame (1), characterized in that: A feeding mechanism is installed on the top of both support bases (11). A transmission component is installed at one end of the feeding mechanism. A rotary feeding mechanism (4) is installed on the lower side of the feeding mechanism. A quantitative feeding mechanism is provided on the inner side of the rotary feeding mechanism (4). The material conveying mechanism includes a composite material conveying pipe (2) that is installed on both of the two support seats (11), and an end cap (24) is installed at one end of the composite material conveying pipe (2). The rotary feeding mechanism (4) includes a mounting housing (42) installed below the outer wall of the end cover (24), and a rotary feeder (45) is rotatably mounted on the inner side of the mounting housing (42). The quantitative feeding mechanism includes a feeding trough (5) opened on the outer wall of the rotary feeder (45), a drag plate (51) is slidably installed on the inner side of the feeding trough (5), and a sliding rod (52) is installed at each of the four corners of the bottom end of the drag plate (51). A spring (53) is sleeved on the outer wall of the sliding rod (52). The bottom end of the material sling (51) is symmetrically equipped with a shaking component (6) for striking the material sling (51).

2. The composite production equipment for powdered quick-setting agent for shotcrete according to claim 1, characterized in that: The material conveying mechanism also includes a reducer (21) installed at the other end of the composite material conveying pipe (2). A motor (22) is installed at the input flange on one side of the reducer (21). A rotating rod (25) is connected to the output shaft of the reducer (21). A spiral feeding blade (26) is installed on the outer wall of the rotating rod (25) and on the inner side of the composite material conveying pipe (2). A feeding area (23) is installed above the middle part of the outer wall of the composite material conveying pipe (2). A discharging area (27) is opened at the connection between the outer wall of the composite material conveying pipe (2) and the feeding area (23).

3. The composite production equipment for powdered quick-setting agent for shotcrete according to claim 2, characterized in that: The rotating material handling mechanism (4) also includes mounting seats (43) fixed on both sides of the upper end of the mounting housing (42), mounting bosses (41) fixed on the outer wall of the end cover (24) corresponding to the mounting seats (43), material handling holes (44) opened on the outer wall of the end cover (24) corresponding to the mounting housing (42), fitting notches (47) opened on the upper ends of both sides of the mounting housing (42) corresponding to the end cover (24), and a discharge port (48) opened at the bottom end of the mounting housing (42).

4. The composite production equipment for powdered quick-setting agent for shotcrete according to claim 3, characterized in that: The opening size of the discharge port (48) is larger than the opening size of the feeding trough (5), so that the feeding trough (5) can be rotated to the discharge port (48) without affecting the feeding of the internal compound ingredients. A transmission rod (46) is rotatably installed on one side of the housing (42). The transmission rod (46) is fixedly connected to the rotating shaft end of the rotary feeder (45) to drive the rotary feeder (45) to rotate and feed.

5. The composite production equipment for powdered quick-setting agent for shotcrete according to claim 4, characterized in that: The transmission component includes a drive pulley (3) installed at one end of the rotating rod (25), a driven pulley (31) installed at one end of the transmission rod (46) and corresponding to the drive pulley (3), and a transmission belt (32) is fitted on the outer wall of the drive pulley (3) and the driven pulley (31).

6. The composite production equipment for powdered quick-setting agent for shotcrete according to claim 1, characterized in that: The bottom end of the material feeding trough (5) is provided with a sliding hole that works in conjunction with the sliding rod (52).

7. The composite production equipment for powdered quick-setting agent for shotcrete according to claim 1, characterized in that: The material shaking component (6) includes a fixed seat (62) installed at the bottom edge of the material dragging plate (51). A transmission rod (63) is rotatably installed on the inner side of the fixed seat (62). A friction roller (64) is installed in the middle of the outer wall of the transmission rod (63). A rotating disk (65) is installed at both ends of the outer wall of the transmission rod (63). Multiple actuating heads (66) are provided on the outer wall of the rotating disk (65). A vibrating arm (67) is installed at the middle of the bottom end of the material dragging plate (51) and at the position corresponding to the rotating disk (65). A contact head (68) is installed at one end of the vibrating arm (67) and at the position corresponding to the actuating head (66). A friction zone (61) is provided on the inner wall of the material picking groove (5) and at the position corresponding to the friction roller (64).

8. The composite production equipment for powdered quick-setting agent for shotcrete according to claim 7, characterized in that: The friction roller (64) is in contact with the friction area (61), and the multiple actuating heads (66) are evenly distributed in a ring. The cross-sections of the actuating heads (66) and the contact heads (68) are both teardrop-shaped. The vibrating arm (67) is arc-shaped and made of elastic material.

9. A method for producing a composite powdered accelerator for shotcrete based on a modified powdered quick-setting agent, characterized in that, Using the device as described in any one of claims 1-8 includes the following steps: The compound ingredients are added to the compound ingredients conveying pipe (2) through the feeding area (23); Start the motor (22) to drive the spiral feeding blades (26) to transport the compound ingredients to the end cap (24); The transmission component drives the rotating feeder (45) to rotate, so that the material pick-up trough (5) passes through the material pick-up hole (44) and the discharge port (48) in sequence. When the material trough (5) passes through the material trough (44), the compound ingredients enter the material trough (5), the drag plate (51) moves down under the action of the weight of the ingredients, and at the same time the shaking part (6) vibrates to make the ingredients uniform; When the feeding trough (5) rotates to the discharge port (48), the spring (53) pushes the drag plate (51) upward to push out the feed and complete the feeding.

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