Full-solid-waste cementitious material grouting auxiliary device for fabricated wall
By designing the swirl distribution plate assembly and the elastic guide head assembly, the problems of accumulation and adaptability of the prefabricated wall grouting device when injecting high-viscosity materials are solved, achieving uniform distribution of grout and dense filling of joints, thereby improving connection strength and construction reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHENGZHOU UNIV
- Filing Date
- 2025-08-15
- Publication Date
- 2026-07-14
AI Technical Summary
Existing prefabricated wall grouting devices are prone to grout accumulation, incomplete filling, and difficulty in adapting to changes in the internal shape of joints when injecting high-viscosity solid waste cementitious materials, resulting in reduced connection strength.
A grouting auxiliary device that uses a swirl distribution plate assembly in conjunction with a manifold base achieves multi-point dispersed injection and adaptive bonding of grout through an arc-shaped manifold and an elastic guide head assembly, avoiding accumulation and improving grout density and construction adaptability.
It significantly improves the density and adaptability of grouting, avoids grout accumulation and blockage, and ensures uniform filling and connection strength within the joint.
Smart Images
Figure CN224495824U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of prefabricated wall construction technology, specifically to an auxiliary device for grouting prefabricated wall solid waste cementitious materials. Background Technology
[0002] In the installation of prefabricated walls, grouting is a crucial step in ensuring structural connection strength and overall stability. In recent years, all-solid-waste cementitious materials prepared primarily from industrial solid waste have gradually become a research and application hotspot in grouting materials due to their environmental friendliness and excellent mechanical properties. To ensure grouting quality, specialized auxiliary devices are needed to achieve uniform injection and dense filling of the grout.
[0003] Currently, commonly used grouting auxiliary devices mostly employ rigid guide pipes in conjunction with manual or mechanical pumping. The grout is directly injected into the wall joints through the guide pipe. However, such devices have significant shortcomings when dealing with the vertical joints of prefabricated walls: because solid waste cementitious materials usually have high viscosity and fast initial setting characteristics, the grout tends to accumulate at the inlet when injected through the straight pipe, resulting in incomplete filling in the upper area, forming air pockets or voids, and affecting the connection strength; at the same time, rigid guide pipes are difficult to adapt to the slight deformations or unevenness that may exist inside the joint, causing local blockages or pressure concentrations, further reducing the grouting quality. Utility Model Content
[0004] The purpose of this utility model is to provide an auxiliary device for grouting prefabricated wall solid waste cementitious materials, so as to solve the problems mentioned in the background art that the current prefabricated wall grouting devices are prone to grout accumulation, incomplete filling and difficulty in adapting to changes in the internal shape of the joint when injecting high viscosity solid waste cementitious materials.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an auxiliary device for grouting prefabricated wall solid waste cementitious materials, including a grouting main pipe, the outlet end of which is connected to a diversion manifold seat, the diversion manifold seat having a plurality of inclined arc-shaped diversion branches distributed circumferentially, the ends of which are all connected to an elastic guide head assembly, the elastic guide head assembly including an outer shell and a wedge-shaped elastic head embedded therein, and a vortex distribution plate assembly is provided between the grouting main pipe and the diversion manifold seat.
[0006] Preferably, the manifold base is a hollow spherical cavity structure, and its sidewall is uniformly provided with inclined through holes that match the number of arc-shaped branch pipes. The axis of the inclined through holes forms an angle of 30°-60° with the horizontal plane.
[0007] Preferably, the arc-shaped diversion branch pipe is composed of a rigid outer pipe and a flexible inner liner. The flexible inner liner is a corrugated silicone tube, and both ends are sealed to the diversion manifold seat and the outer shell by clamps.
[0008] Preferably, the outer shell has a ball-and-socket structure inside, the wedge-shaped elastic head has a ball head at its tail, the ball head is embedded in the ball-and-socket and can rotate freely, and the front end of the outer shell has an annular limiting flange.
[0009] Preferably, the swirl distribution disk assembly includes an outer ring disk and an inner swirl disk arranged coaxially. The inner swirl disk can rotate relative to the outer ring disk. The outer ring disk has an outlet in its circumference, which is connected to the input cavity of the distribution manifold seat. The surface of the inner swirl disk is provided with a spiral guide groove.
[0010] Preferably, the front end face of the wedge-shaped elastic head is provided with a longitudinal guide groove, and the side wall is provided with circumferentially distributed micropores.
[0011] Compared with existing technologies, the beneficial effects of this utility model are as follows: This prefabricated wall grouting auxiliary device for solid waste cementitious materials achieves multi-point dispersed injection and adaptive bonding of grout, effectively avoiding the accumulation of high-viscosity materials and improving grout density and construction adaptability. Through the coordinated design of the swirl distribution disc assembly and the diversion manifold seat, the device optimizes the initial flow state of the grout, reducing the risk of blockage. Furthermore, the inclined multi-directional arrangement of the arc-shaped diversion branch pipes enables three-dimensional filling of the grout within the joint. Simultaneously, the synergistic effect of the ball head and ball-and-socket structure and the wedge-shaped elastic head in the elastic guide head assembly allows the end to have adaptive swinging and wall-adhering capabilities, significantly improving the device's adaptability to complex joint environments and grouting reliability. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the grouting auxiliary device for prefabricated wall solid waste cementitious materials according to the present invention.
[0013] Figure 2 This is a schematic diagram of the sequential connection structure of the diversion manifold seat, the arc-shaped diversion branch pipe and the elastic guide head assembly of the prefabricated wall solid waste cementitious material grouting auxiliary device of this utility model.
[0014] Figure 3 This is a schematic diagram of the external structure of the grouting main outlet end of an auxiliary device for grouting prefabricated wall solid waste cementitious materials according to this utility model.
[0015] In the diagram: 1. Grouting main pipe; 2. Diversion manifold seat; 21. Inclined through hole; 3. Arc-shaped diversion branch pipe; 31. Rigid outer pipe; 32. Flexible inner liner; 4. Elastic guide head assembly; 41. Outer shell; 42. Wedge-shaped elastic head; 5. Swirl distribution disc assembly; 51. Outer ring disc; 52. Inner swirling disc. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] Please see Figure 1-3This utility model provides a technical solution: an auxiliary device for grouting prefabricated wall solid waste cementitious materials, including a grouting main pipe 1, the outlet end of which is connected to a diversion manifold seat 2, the diversion manifold seat 2 having multiple inclined arc-shaped diversion branches 3 distributed circumferentially, and each arc-shaped diversion branch 3 having an elastic guide head assembly 4 connected to its end, the elastic guide head assembly 4 including an outer shell 41 and a wedge-shaped elastic head 42 embedded therein, and a vortex distribution plate assembly 5 is provided between the grouting main pipe 1 and the diversion manifold seat 2, wherein the grouting main pipe 1 and the vortex distribution plate assembly 5 are connected by external and internal threads, and a high-temperature resistant rubber sealing ring is used for end face sealing to ensure that the high-viscosity grout is leak-free under high pressure transportation, the vortex distribution plate assembly 5 and the diversion manifold seat 2 ... The manifold seats 2 are connected via flange structure and secured with bolts. O-rings are installed on the contact surfaces to form a fluid seal, facilitating disassembly and maintenance. When grout enters from the main grouting pipe 1, it forms a rotating flow under the action of the vortex distribution plate assembly 5, promoting the uniform entry of high-viscosity solid waste cementitious material into the manifold seats 2 and preventing accumulation at the inlet due to flow stagnation. The manifold seats 2 simultaneously guide the grout to different heights of the wall joint through multiple arc-shaped branch pipes 3, effectively expanding the grouting coverage area and preventing gaps or air pockets at the top. When the device is inserted into the joint, the elastic guide head assembly 4 at the end of each arc-shaped branch pipe 3 enters accordingly. Its internal wedge-shaped elastic head 42 engages with the ball-and-socket structure of the outer shell 41 through a ball head. The structure allows for free swinging, adapting to unevenness or minor deformation within the joint, moving along the inner wall and continuously guiding the smooth diffusion of the grout. This avoids blockage or pressure concentration caused by rigid contact. The overall structure achieves uniform grout distribution, continuous filling, and adaptive flow guidance, effectively solving the problems of incomplete filling, easy air accumulation, poor adaptability, and unstable grouting quality caused by single-point straight pipe injection and rigid structures in existing technologies. The diversion manifold seat 2 is a hollow spherical cavity structure with inclined through holes 21 evenly distributed on its sidewall, matching the number of arc-shaped diversion branches 3. The axis of the inclined through holes 21 forms an angle of 30°-60° with the horizontal plane. This structure allows the grout to achieve uniform convergence and circumferential distribution within the diversion manifold seat 2, and to flow through the inclined through holes 21. The flow direction is adjusted to an upward inclination, driving the slurry through the arc-shaped diversion branch pipe 3 towards the higher part of the joint. The inclination angle optimizes the flow path, enhancing the slurry's upward climbing ability. Multi-point synchronous injection effectively breaks the flow dead zone of single-point feeding, preventing the accumulation of high-viscosity solid waste cementitious materials near the inlet, significantly improving the filling continuity and density of the upper area, while reducing the risk of local pressure concentration. This fundamentally improves the technical defects of traditional straight pipe grouting, which are prone to voids, air pockets, and uneven filling. The arc-shaped diversion branch pipe 3 consists of a rigid outer pipe 31 and a flexible inner liner 32. The flexible inner liner 32 is a corrugated silicone tube, and both ends are sealed to the diversion manifold seat 2 and the outer shell 41 by clamps. The clamps adopt a stainless steel double-ear bushing structure.During installation, the flexible inner liner 32 extends into the protrusion inside the inclined through hole 21 of the manifold seat 2 and the annular groove on the inner wall of the inlet of the outer shell 41. After the clamps are tightened, radial locking and axial limiting are achieved for dual fixation, preventing detachment due to vibration or pressure fluctuations during operation. This rigid outer tube 31 provides stable geometric support for the arc-shaped branch pipe 3, keeping the preset inclined arc flow channel from deforming and ensuring that the slurry is transported in the predetermined direction. The flexible inner liner 32 is made of corrugated silicone tubing, giving the end of the branch pipe a certain radial and angular deformation capability. When the elastic guide head assembly 4 swings due to unevenness in the joint, the flexible inner liner 32 can absorb displacement stress through compression or extension of the corrugated structure, avoiding hard breakage at the connection. Its two ends are connected to the manifold by clamps. The seat 2 and the outer shell 41 achieve a reliable seal, ensuring the sealing of the high-viscosity grout during transportation and preventing leakage, while allowing the flexible inner liner 32 to maintain a stable connection during slight oscillations. The outer shell 41 has a ball-and-socket structure inside, and the wedge-shaped elastic head 42 has a ball head at its tail. This ball head is embedded in the ball-and-socket and can rotate freely. The front end of the outer shell 41 has an annular limiting flange. This structure, with the ball head of the wedge-shaped elastic head 42 embedded in the ball-and-socket structure inside the outer shell 41, forms a ball-and-socket connection, allowing the wedge-shaped elastic head 42 to swing freely at small angles in three-dimensional space to adapt to local bending, misalignment, or unevenness within the wall joint. That is, when the grouting head is advanced in the joint or subjected to lateral constraints, the wedge-shaped elastic head 42 can flexibly deflect around the center of the ball head, always maintaining a stable connection. Maintaining the fit and guidance between the front wedge structure and the joint wall effectively guides the smooth flow of high-viscosity slurry. Simultaneously, the annular limiting flange at the front of the outer shell 41 physically constrains the swing amplitude of the ball head, preventing excessive swinging that could lead to connection detachment or twisting and pressure on the flexible inner liner 32, ensuring stable and reliable movement. The swirl distribution disk assembly 5 includes an outer ring disk 51 and an inner swirl disk 52 coaxially arranged. The inner swirl disk 52 can rotate relative to the outer ring disk 51. The outer ring disk 51 has a circumferential outlet, which communicates with the input cavity of the distribution manifold seat 2. The surface of the inner swirl disk 52 has a spiral guide groove. In this structure, the slurry enters the spiral guide groove on the surface of the inner swirl disk 52 from the grouting main pipe 1, and rotates along the spiral groove during flow, forming a stable circumferential velocity component. When the slurry passes through the outer ring... When the circumferentially arranged outlet of disk 51 enters the input cavity of the diversion manifold seat 2, the rotating flow promotes the uniform circumferential distribution of high-viscosity solid waste cementitious material within the spherical cavity. This effectively breaks the concentrated jet phenomenon of axial flow and avoids uneven flow caused by preferential filling of the slurry on one side of the diversion branch. Furthermore, the inner swirling disk 52 can rotate relative to the outer ring disk 51. By adjusting the angle between the spiral guide groove and the feed direction, it can adapt to the flow characteristics of slurries of different viscosities, optimize the swirling intensity, and further improve the uniformity of distribution. This swirling distribution mechanism improves the initial conditions of multi-channel diversion from the source, significantly reduces the risk of flow deviation caused by differences in flow resistance, and ensures that each arc-shaped diversion branch 3 receives a balanced slurry supply, thereby ensuring the stability and filling consistency of multi-point synchronous grouting.The wedge-shaped elastic head 42 has a longitudinal guide groove on its front end face and circumferentially distributed micropores on its side wall. This structure allows the longitudinal guide groove on the front end face of the wedge-shaped elastic head 42 to guide the high-viscosity slurry to extend orderly along the joint's forward direction, preventing slurry accumulation and blockage in front of the head. Simultaneously, under pressure, some slurry seeps out slightly through the micropores, forming a thin slurry lubricating film between the wedge-shaped elastic head 42 and the inner wall of the joint, effectively reducing movement resistance and preventing jamming or damage to the wall surface due to dry friction.
[0018] Working Principle: When using this prefabricated wall grouting auxiliary device made of solid waste cementitious material, firstly, connect the main grouting pipe 1 to the outlet of the external grouting pump via thread and seal it. Start the grouting pump, and the solid waste cementitious material slurry is transported into the main grouting pipe 1 through the pipeline until the slurry flows to the vortex distribution plate assembly 5 and enters the spiral guide groove on the surface of the inner vortex plate 52. Under pressure, it forms a rotating flow along the spiral path. Then, the slurry passes through the outlets arranged circumferentially on the outer ring plate 51 and enters the input cavity of the diversion manifold seat 2. The internal space of the diversion manifold seat 2 allows the rotating slurry to diffuse naturally and be evenly distributed to the circumferential areas. The slurry flows out from the inclined through hole 21 on the side wall of the diversion manifold seat 2, and then enters the channel between the rigid outer pipe 31 and the flexible inner liner 32 of the arc-shaped diversion branch pipe 3, and is transported to the end along the arc path. When the grouting operation begins, the operator will... The elastic guide head assembly 4 at the front end of the device is aligned with the vertical joint entrance of the prefabricated wall and slowly advanced. The wedge-shaped front end of the wedge-shaped elastic head 42 first contacts the inner wall of the joint. Under the action of thrust, the ball head at its tail deflects in the ball-and-socket structure of the outer shell 41, realizing the spatial swing of the guide head. At the same time, the corrugated structure of the flexible inner liner 32 undergoes elastic compression or extension to adapt to the angle change. The slurry continuously enters the interior of the outer shell 41 through the arc-shaped diversion branch pipe 3 and flows into its internal flow channel from the tail of the wedge-shaped elastic head 42. Finally, it is squeezed out from the longitudinal guide groove on the front end face of the wedge-shaped elastic head 42. At the same time, some slurry seeps out to the surroundings through the micropores distributed circumferentially on the side wall under pressure. As the device continues to advance along the joint, multiple arc-shaped diversion branch pipes 3 simultaneously inject slurry into the joint from different heights. The slurry fills the joint from bottom to top and compacts it, thus completing a series of tasks.
[0019] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A prefabricated wall grouting auxiliary device for solid waste cementitious materials, comprising a grouting main pipe (1), characterized in that: The outlet end of the grouting main pipe (1) is connected to a diversion manifold seat (2). The diversion manifold seat (2) has multiple inclined arc-shaped diversion branches (3) distributed around its circumference. The ends of the arc-shaped diversion branches (3) are all connected to an elastic guide head assembly (4). The elastic guide head assembly (4) includes an outer shell (41) and a wedge-shaped elastic head (42) embedded therein. A vortex distribution disc assembly (5) is provided between the grouting main pipe (1) and the diversion manifold seat (2).
2. The prefabricated wall grouting auxiliary device for solid waste cementitious materials according to claim 1, characterized in that: The diversion manifold seat (2) is a hollow spherical cavity structure, and its side wall is uniformly provided with inclined through holes (21) matching the number of arc-shaped diversion branch pipes (3). The axis of the inclined through holes (21) forms an angle of 30°-60° with the horizontal plane.
3. The prefabricated wall grouting auxiliary device for solid waste cementitious materials according to claim 1, characterized in that: The arc-shaped diversion branch pipe (3) is composed of a rigid outer pipe (31) and a flexible inner liner (32). The flexible inner liner (32) is a corrugated silicone tube, and its two ends are sealed to the diversion manifold seat (2) and the outer shell (41) by clamps.
4. The prefabricated wall grouting auxiliary device for solid waste cementitious materials according to claim 1, characterized in that: The outer shell (41) has a ball-and-socket structure inside, and the wedge-shaped elastic head (42) has a ball head at its tail. The ball head is embedded in the ball-and-socket and can rotate freely. The outer shell (41) has an annular limiting flange at its front end.
5. The prefabricated wall grouting auxiliary device for solid waste cementitious materials according to claim 1, characterized in that: The swirl distribution disk assembly (5) includes an outer ring disk (51) and an inner swirl disk (52) arranged coaxially. The inner swirl disk (52) can rotate relative to the outer ring disk (51). The outer ring disk (51) is provided with an outlet in the circumference. The outlet is connected to the input cavity of the diversion manifold seat (2). The surface of the inner swirl disk (52) is provided with a spiral guide groove.
6. The prefabricated wall grouting auxiliary device for solid waste cementitious materials according to claim 1, characterized in that: The wedge-shaped elastic head (42) has a longitudinal guide groove on its front end face and circumferentially distributed micropores on its side wall.