Tail slurry pressure injection device for road grouting

Abstract

The utility model provides a tail slurry pressure injection device for road grouting, which comprises a slurry storage barrel, a stirring assembly, a grouting assembly, a support frame and a backflow stopping mechanism, the backflow stopping mechanism is connected in the grouting assembly, the backflow stopping mechanism comprises a first backflow stopping unit and a second backflow stopping unit, the backflow-stopping plate of the first backflow-stopping unit and the backflow-stopping plate of the second backflow-stopping unit are connected to the two sides of the inner wall of the grouting assembly respectively and arranged in a staggered mode in the vertical direction, and the backflow-stopping plates are arranged in a downward inclined mode. In this way, after the grouting hole reaches the target grouting amount or the grouting stopping condition, the grouting pump unit can be moved to the next hole to conduct grouting, the tail slurry pressing and grouting device is installed on the original grouting hole, slurry is contained in the slurry storage barrel and stirred through the stirring assembly, and then tail slurry is automatically pressed and injected under the gravity effect, so that the grouting construction efficiency is greatly improved, the construction time is shortened, and the construction cost is reduced. And under the effect of the backflow stopping mechanism, grout backflow can be prevented, waste of grouting materials is reduced, meanwhile, blocking is avoided, and the grouting effect is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of road maintenance technology, and in particular to a tail slurry injection device for road grouting. Background Technology

[0002] In the existing road grouting process, in order to ensure the filling and repair effect, after the target grouting volume or grouting stop condition is reached in a grouting hole, grouting will continue for a period of time, usually about half an hour, before moving to the next grouting hole to continue grouting.

[0003] In the later stages of road maintenance, it is common practice to close some lanes to keep the road open. The grouting work is not large in scale and usually only one set of grouting pump unit is used to continue to inject tail grout into the grouting hole that has reached the target grouting volume or the grouting stop condition. This will affect the grouting of the next hole, resulting in low grouting efficiency and waste of grout. Adding another set of grouting pump unit can improve efficiency, but it will greatly increase the construction cost.

[0004] Therefore, it is necessary to propose a tail slurry injection device for road grouting to solve or at least alleviate the above-mentioned defects. Utility Model Content

[0005] The main purpose of this invention is to provide a tail slurry injection device for road grouting, so as to solve the problems of low efficiency and slurry backflow in the existing technology when injecting tail slurry.

[0006] To achieve the above objectives, this utility model provides a tail slurry injection device for road grouting, comprising a slurry storage tank, a mixing assembly, an injection assembly, and a backflow prevention mechanism; wherein,

[0007] The slurry storage tank has an opening at the top and a slurry outlet at the bottom;

[0008] The support frame includes a support ring and a plurality of support legs arranged circumferentially along the support ring. The support ring is sleeved on the outside of the slurry storage tank, and the top of the support legs is connected to the support ring.

[0009] The stirring assembly is connected to the slurry storage tank, the top of the stirring assembly is used to connect to the drive mechanism, and the stirring assembly itself is rotatably set.

[0010] The top of the grouting assembly is connected to the bottom of the grout storage tank, and the backflow prevention mechanism is connected inside the grouting assembly; wherein,

[0011] The backflow prevention mechanism includes a first backflow prevention unit and a second backflow prevention unit. Both the first and second backflow prevention units include multiple backflow prevention plates and diverter plates arranged vertically at intervals. The backflow prevention plates of the first and second backflow prevention units are respectively connected to both sides of the inner wall of the grouting assembly and are staggered vertically. The diverter plates are connected to the inner wall of the grouting assembly, and a diverter plate is provided between every two adjacent backflow prevention plates vertically. Both the backflow prevention plates and the diverter plates are inclined downwards.

[0012] Preferably, the bottom of the slurry storage tank is provided with a downward protrusion to form a slurry storage tank connector, which is correspondingly disposed at the slurry outlet, and the top of the grouting assembly is connected to the slurry storage tank connector.

[0013] Preferably, the grouting assembly includes an upper connector, a connecting pipe, and a lower connector. The upper connector and the lower connector are respectively connected to the upper and lower ends of the connecting pipe. The connecting pipe is connected to the grout storage tank connector through the upper connector, and the connecting pipe is used to connect to the grouting head through the lower connector. The connecting pipe is provided with the backflow prevention mechanism.

[0014] Preferably, the grouting assembly includes a threaded connector, an inner grouting pipe, an outer grouting pipe, a rubber ring assembly, and a rubber ring clip. The threaded connector is connected to the grout storage tank connector. The inner grouting pipe and the outer grouting pipe are both connected to the bottom of the threaded connector. The inner grouting pipe is connected to the grout storage tank connector. The outer grouting pipe is spaced apart on the outer periphery of the inner grouting pipe. The rubber ring assembly is fitted onto the bottom of the inner grouting pipe and positioned between the outer grouting pipe and the inner grouting pipe. The rubber ring clip is fitted onto the inner grouting pipe and abuts against the bottom end of the rubber ring assembly. The bottom end of the inner grouting pipe is connected to the grouting hole, and the backflow prevention mechanism is provided in the inner grouting pipe.

[0015] Preferably, the stirring assembly includes a stirring rod and stirring blades, the top end of the stirring rod is connected to the slurry storage tank, the stirring blades are connected to the bottom end of the stirring rod, and the stirring rod itself is rotatably arranged.

[0016] Preferably, the stirring assembly further includes a stirring rod connector and four support rods spaced apart circumferentially along the slurry storage tank. The first end of each support rod is connected to the inner wall of the slurry storage tank, and the stirring rod connector is connected between the second ends of the four support rods. The stirring rod passes through the stirring rod connector and is rotatably mounted.

[0017] Preferably, the driving mechanism is a manual crank.

[0018] Preferably, the driving mechanism is a drive motor.

[0019] Preferably, the inclination angle of the anti-backflow plate is 30° to 40°.

[0020] Preferably, the rubber ring assembly includes three rubber rings stacked vertically, the rubber rings being fitted around the bottom of the grouting inner pipe and positioned between the grouting outer pipe and the grouting inner pipe.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] This utility model provides a tail slurry injection device for road grouting, including a slurry storage tank, a mixing assembly, a grouting assembly, a support frame, and a backflow prevention mechanism. The slurry storage tank has an opening at the top and a slurry outlet at the bottom. The mixing assembly is connected to the slurry storage tank, and its top end is connected to a drive mechanism. The mixing assembly itself is rotatably mounted. The top end of the grouting assembly is connected to the bottom of the slurry storage tank. The backflow prevention mechanism is connected inside the grouting assembly and includes a first backflow prevention unit and a second backflow prevention unit. Both the first and second backflow prevention units include multiple backflow prevention plates arranged at vertical intervals. The backflow prevention plates of the first and second backflow prevention units are respectively connected to both sides of the inner wall of the grouting assembly and are staggered vertically. All backflow prevention plates are inclined downwards. Using this device, once the designed termination pressure or designed grouting volume is reached at a specific grouting hole, the grouting pump unit can be moved to the next hole for grouting. The tailing grout device is then installed on the original grouting hole, and the grout is loaded into the grouting tank. Under gravity, the tailing grout can be automatically injected. The stirring component prevents grout segregation; this can be done manually or mechanically. The grouting component, combined with the backflow prevention mechanism, effectively prevents grout from escaping from the tailing grout hole while the grouting pump unit is grouting other holes, and also prevents the tailing grout device from becoming clogged due to low grouting pressure. Thus, using this tailing grout device, tailing grouting and grouting of other holes can be carried out in parallel, and multiple tailing grout devices can be used simultaneously for tailing grouting, greatly improving the efficiency of road grouting construction. Moreover, this tailing grout device has a simple structure, is easy to operate, and adds very little to the cost and workload. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0024] Figure 1This is a schematic diagram of the overall assembly elevation of a preferred embodiment of the grouting component of this utility model;

[0025] Figure 2 This is a schematic diagram of the internal structure of the grouting assembly in a preferred embodiment of the present invention.

[0026] Figure 3 This is a cross-sectional exploded view of another preferred embodiment of the grouting assembly of this utility model;

[0027] Figure 4 This is a plan view of the first anti-backflow unit in one embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of the assembly plane of the stirring component in one embodiment of the present invention.

[0029] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings.

[0030] Explanation of icon numbers:

[0031] 10. Slurry storage tank; 110. Slurry storage tank connector; 20. Mixing assembly; 210. Mixing rod; 220. Mixing blade; 230. Mixing rod connector; 240. Support rod; 30. Grouting assembly; 311. Upper connector; 312. Connecting pipe; 313. Lower connector; 321. Threaded connector; 322. Inner grouting pipe; 323. Outer grouting pipe; 324. Rubber ring assembly; 325. Rubber ring buckle; 40. Backflow prevention mechanism; 410. Backflow prevention plate; 420. Diverter plate; 50. Support frame; 510. Support ring; 520. Support leg. Detailed Implementation

[0032] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0033] 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.

[0034] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0035] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0036] Please see the appendix Figure 1-5 This utility model provides an embodiment of a tail slurry injection device for road grouting, comprising a slurry storage tank 10, a mixing assembly 20, an injection assembly 30, and a backflow prevention mechanism 40. First, it should be noted that, unlike existing technologies where, when a single grouting pump unit is used, continuing to inject tail slurry into the completed grouting hole affects the grouting of the next hole, leading to low grouting efficiency and slurry waste; while adding another grouting pump unit can improve efficiency, it significantly increases construction costs; furthermore, slurry backflow frequently occurs during tail slurry injection. This application addresses the above-mentioned deficiencies in the prior art by providing a tail slurry injection device for road grouting, as detailed below:

[0037] The slurry storage tank 10 has an opening at the top and a slurry outlet at the bottom. The support frame 50 includes a support ring 510 and multiple support legs 520 spaced circumferentially along the support ring 510. The support ring 510 is fitted over the slurry storage tank 10, and the tops of the support legs 520 are connected to the support ring 510. The stirring assembly 20 is connected to the slurry storage tank 10, and its top end is connected to a drive mechanism. The stirring assembly 20 itself is rotatably mounted. The top end of the grouting assembly 30 communicates with the bottom of the slurry storage tank 10, and the backflow prevention mechanism 40 is connected inside the grouting assembly 30. The backflow prevention mechanism 40 includes a first backflow prevention unit and a second backflow prevention unit. Both the first and second backflow prevention units include multiple backflow prevention plates 410 and diverter plates 420 arranged vertically at intervals. The backflow prevention plates 410 of the first and second backflow prevention units are respectively connected to both sides of the inner wall of the grouting assembly 30 and are staggered vertically. The diverter plates 420 are connected to the inner wall of the grouting assembly 30, and a diverter plate 420 is provided between every two adjacent backflow prevention plates 410 in the vertical direction. Both the backflow prevention plates 410 and the diverter plates 420 are inclined downwards.

[0038] Specifically, the tail grout injection device for road grouting in this application includes a grout storage tank 10, a mixing assembly 20, an injection assembly 30, a support frame 50, and a backflow prevention mechanism 40. The grout storage tank 10 is used to store the grout used during tail grout injection. It has an opening at the top for easy feeding and a grout outlet at the bottom for grout outflow. The support frame 50 provides stable support for the grout storage tank 10 and is supported on the ground or other support platform by support legs 520 to ensure the stability of the grout storage tank 10. The mixing assembly 20 is used to mix the grout to ensure its fluidity and facilitate injection; therefore, it is located on... In the slurry storage tank 10, the top of the stirring assembly 20 is used to connect to an external drive mechanism so that the stirring assembly 20 can be driven to rotate by the drive mechanism to stir. The grouting assembly 30 is used to inject the slurry in the slurry storage tank 10 into the grouting hole. It is connected to the bottom of the slurry storage tank 10. The slurry flows downward from the grouting assembly 30 into the grouting hole under the action of gravity. Considering that during the grouting, since the main function is to fill the slurry to saturation, the slurry backflow phenomenon usually occurs. Therefore, the backflow prevention mechanism 40 can be added to the grouting assembly 30 to prevent the slurry backflow.

[0039] The backflow prevention mechanism 40 includes a first backflow prevention unit and a second backflow prevention unit. Both the first and second backflow prevention units have a backflow prevention plate 410 and a flow divider plate 420 that are inclined downwards and are vertically offset on both sides of the inner wall of the grouting assembly 30. This forms a structure similar to a Tesla valve to achieve the backflow prevention effect. The Tesla valve is a well-known backflow prevention principle, so it will not be described in detail here. In this way, the backflow prevention plate 410 prevents the backflow of grout during tail slurry injection. The flow divider plate 420 can improve the flow state of the grout, improve the flow effect, and prevent the grout from accumulating too much.

[0040] Furthermore, a slurry storage tank 10 is formed by a downward protrusion at the bottom of the slurry storage tank 10. The slurry storage tank connector 110 is correspondingly disposed at the slurry outlet, and the top of the grouting assembly 30 is connected to the slurry storage tank connector 110.

[0041] It should be noted that the grout storage tank connector 110 facilitates the connection of the grouting assembly 30 to the bottom of the grout storage tank 10, thereby improving the ease of installation.

[0042] In a preferred embodiment of the present invention, the grouting assembly 30 includes an upper connector 311, a connecting pipe 312, and a lower connector 313. The upper connector 311 and the lower connector 313 are respectively connected to the upper and lower ends of the connecting pipe 312. The connecting pipe 312 is connected to the grout storage tank connector 110 through the upper connector 311. The connecting pipe 312 is used to connect to the grouting head through the lower connector 313. The backflow prevention mechanism 40 is provided in the connecting pipe 312.

[0043] It should be noted that the connecting pipe 312 is used for grout flow, and the upper connector 311 facilitates the connection between the connecting pipe 312 and the grout storage tank 10 to connect the upper connector 311 and the grout storage tank connector 110. The lower connector 313 is used to connect with a general grouting head. After the grout in the grout storage tank 10 flows into the connecting pipe 312, the grout supported by the connecting pipe 312 is then injected into the grouting hole through the grouting head. In this embodiment, the anti-backflow mechanism 40 is provided in the connecting pipe 312 to prevent grout backflow.

[0044] In another preferred embodiment of this utility model, the grouting assembly 30 includes a threaded connector 321, an inner grouting tube 322, an outer grouting tube 323, a rubber ring assembly 324, and a rubber ring buckle 325. The threaded connector 321 is connected to the grout storage tank connector 110. The inner grouting tube 322 and the outer grouting tube 323 are both connected to the bottom of the threaded connector 321. The inner grouting tube 322 is connected to the grout storage tank connector 110. The outer grouting tube 323... Pipes 323 are spaced apart on the outer periphery of the inner grouting pipe 322. The rubber ring assembly 324 is sleeved on the bottom of the inner grouting pipe 322 and is disposed between the outer grouting pipe 323 and the inner grouting pipe 322. The rubber ring buckle 325 is sleeved on the inner grouting pipe 322 and abuts against the bottom end of the rubber ring assembly 324. The bottom end of the inner grouting pipe 322 is used for grouting hole communication, and the backflow prevention mechanism 40 is provided in the inner grouting pipe 322.

[0045] It is worth noting that, in another preferred embodiment, a specially designed grouting head integrating the pipe and the grouting head can be used. Specifically, it includes a threaded connector 321, an inner grouting tube 322, an outer grouting tube 323, a rubber ring assembly 324, and a rubber ring clip 325. The threaded connector 321 facilitates connection with the grout storage tank connector 110, allowing for convenient installation and disassembly. The thread also allows for adjustment of the overall height of the specially designed grouting head. The inner grouting tube 322 is used to receive the grout, ensuring its flow. The outer grouting tube 323 protects and positions the inner grouting tube 322 to ensure the smooth operation of the grouting process. The rubber ring assembly 324 is stable and can effectively prevent grout leakage during the grouting process. Under the compression of the external grouting pipe 323, it has good sealing performance. The rubber ring buckle 325 can further stabilize the installation of the rubber ring assembly 324. Thus, when the grouting inner pipe 322 is connected to the grout in the grout storage tank 10, the grout is directly injected into the grouting hole through the bottom of the grouting inner pipe 322 without the need to connect a general grouting head. The grouting assembly 30 in this embodiment is more convenient and integrated, and has better sealing performance. The backflow prevention mechanism 40 is set in the grouting inner pipe 322 to prevent grout backflow.

[0046] In a preferred embodiment of the present invention, the stirring assembly 20 includes a stirring rod 210 and a stirring blade 220. The top end of the stirring rod 210 is connected to the slurry storage tank 10, and the stirring blade 220 is connected to the bottom end of the stirring rod 210. The stirring rod 210 itself is rotatably arranged.

[0047] It is worth noting that the stirring rod 210 is used for rotation, and the stirring blade 220 stirs the slurry while rotating to improve the fluidity of the slurry and prevent the slurry from coagulating.

[0048] Furthermore, the stirring assembly 20 also includes a stirring rod connector 230 and four support rods 240 arranged circumferentially around the slurry storage tank 10. The first end of the support rod 240 is connected to the inner side wall of the slurry storage tank 10, the stirring rod connector 230 is connected between the second ends of the four support rods 240, and the stirring rod 210 passes through the stirring rod connector 230 and is rotatably arranged.

[0049] It should be noted that the stirring rod joint 230 and the four support rods 240 form a structure for the stirring rod 210 to be installed in the slurry storage tank 10. In this way, the stirring rod 210 can be stably installed on the stirring rod joint 230 after passing through the stirring rod joint 230, and can also rotate itself. With the help of the drive mechanism, the rotation of the stirring rod 210 can be realized.

[0050] Furthermore, the driving mechanism is a manual crank.

[0051] It should be understood that, in a preferred embodiment, stirring can be performed manually by setting the manual crank. The manual crank can adopt a Z-shaped structure, with one end for connection to the top of the stirring rod 210 and the other end for easy operation by a technician.

[0052] Furthermore, the driving mechanism is a drive motor.

[0053] It should be noted that, in another preferred embodiment, an electric stirring method can be adopted by using a drive motor, with the drive end of the drive motor connected to the top of the stirring rod 210; alternatively, a special drill bit can be connected, and then the drill bit can be connected to an electric drill to provide power for stirring. Those skilled in the art can choose according to actual needs.

[0054] Furthermore, the tilt angle of the backflow preventer 410 is 30° to 40°.

[0055] It should be noted that different tilt angles result in different slurry flow speeds. Excessive tilt can also lead to poor backflow effect. Preferably, the tilt angle of the anti-backflow plate 410 is 30° to 40°, which can be set by those skilled in the art according to actual conditions. It is worth mentioning that the diversion plate 420 can be tilted at a larger angle to better improve the slurry flow effect. Therefore, the tilt angle of the diversion plate 420 can be set to 50° to 60°.

[0056] Furthermore, the rubber ring assembly 324 includes three rubber rings stacked vertically, which are fitted around the bottom of the grouting inner pipe 322 and positioned between the grouting outer pipe 323 and the grouting inner pipe 322.

[0057] It is understood that the number of rubber rings can be selected according to the actual sealing effect required. In a preferred embodiment of this application, the rubber ring assembly 324 includes three rubber rings stacked vertically.

[0058] To facilitate understanding by those skilled in the art, the grouting process is briefly described below:

[0059] ① Hole layout: Arrange grouting holes, drill holes, and clean holes according to design requirements; ② Mix grout; ③ Install grouting pipes; ④ Grout according to the design pressure; ⑤ Hole relocation: When the grouting pressure reaches the design stop pressure or the design grouting volume, stop the current grouting and move the grouting pipe to the next grouting hole; ⑥ Tail grout injection: Install the tail grouting device of this application on the original grouting hole, pour grout into the grout storage tank 10 of the tail grouting device, and stir it with the stirring component 20. Then let the grout automatically inject tail grout under the action of gravity until the grouting hole no longer absorbs grout; ⑦ Repeat steps ③ to ⑥ for each grouting hole.

[0060] It is worth mentioning that each grouting hole after grouting can be equipped with a tail grout injection device as described in this application to perform the tail grout injection process simultaneously, thereby greatly improving the efficiency of tail grout injection.

[0061] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A tail slurry injection device for road grouting, characterized in that, It includes a slurry storage tank, a mixing assembly, a grouting assembly, a support frame, and a backflow prevention mechanism; among which, The slurry storage tank has an opening at the top and a slurry outlet at the bottom; The support frame includes a support ring and a plurality of support legs arranged circumferentially along the support ring. The support ring is sleeved on the outside of the slurry storage tank, and the top of the support legs is connected to the support ring. The stirring assembly is connected to the slurry storage tank, the top of the stirring assembly is used to connect to the drive mechanism, and the stirring assembly itself is rotatably set. The top of the grouting assembly is connected to the bottom of the grout storage tank, and the backflow prevention mechanism is connected inside the grouting assembly; wherein, The backflow prevention mechanism includes a first backflow prevention unit and a second backflow prevention unit. Both the first and second backflow prevention units include multiple backflow prevention plates and diverter plates arranged vertically at intervals. The backflow prevention plates of the first and second backflow prevention units are respectively connected to both sides of the inner wall of the grouting assembly and are staggered vertically. The diverter plates are connected to the inner wall of the grouting assembly, and a diverter plate is provided between every two adjacent backflow prevention plates vertically. Both the backflow prevention plates and the diverter plates are inclined downwards.

2. The tail slurry injection device for road grouting according to claim 1, characterized in that, The bottom of the slurry storage tank has a downward protrusion forming a slurry storage tank connector, which is correspondingly located at the slurry outlet. The top of the grouting assembly is connected to the slurry storage tank connector.

3. The tail slurry injection device for road grouting according to claim 2, characterized in that, The grouting assembly includes an upper connector, a connecting pipe, and a lower connector. The upper connector and the lower connector are respectively connected to the upper and lower ends of the connecting pipe. The connecting pipe is connected to the grout storage tank connector through the upper connector, and the connecting pipe is used to connect to the grouting head through the lower connector. The connecting pipe is provided with the backflow prevention mechanism.

4. The tail slurry injection device for road grouting according to claim 2, characterized in that, The grouting assembly includes a threaded connector, an inner grouting tube, an outer grouting tube, a rubber ring assembly, and a rubber ring clip. The threaded connector is connected to the grout storage tank connector. The inner grouting tube and the outer grouting tube are both connected to the bottom of the threaded connector. The inner grouting tube is connected to the grout storage tank connector. The outer grouting tube is spaced apart on the outer periphery of the inner grouting tube. The rubber ring assembly is fitted onto the bottom of the inner grouting tube and positioned between the outer grouting tube and the inner grouting tube. The rubber ring clip is fitted onto the inner grouting tube and abuts against the bottom end of the rubber ring assembly. The bottom end of the inner grouting tube is connected to the grouting hole, and the inner grouting tube is equipped with the backflow prevention mechanism.

5. The tail slurry injection device for road grouting according to claim 1, characterized in that, The stirring assembly includes a stirring rod and stirring blades. The top end of the stirring rod is connected to the slurry storage tank, and the stirring blades are connected to the bottom end of the stirring rod. The stirring rod itself is rotatably mounted.

6. The tail slurry injection device for road grouting according to claim 5, characterized in that, The mixing assembly also includes a mixing rod connector and four support rods spaced apart circumferentially along the slurry storage tank. The first end of each support rod is connected to the inner wall of the slurry storage tank, and the mixing rod connector is connected between the second ends of the four support rods. The mixing rod passes through the mixing rod connector and is rotatably mounted.

7. The tail slurry injection device for road grouting according to claim 1, characterized in that, The driving mechanism is a manual crank.

8. The tail slurry injection device for road grouting according to claim 1, characterized in that, The driving mechanism is a drive motor.

9. The tail slurry injection device for road grouting according to claim 1, characterized in that, The inclination angle of the check valve is 30° to 40°.

10. The tail slurry injection device for road grouting according to claim 4, characterized in that, The rubber ring assembly includes three rubber rings stacked vertically, which are fitted around the bottom of the inner grouting pipe and positioned between the outer grouting pipe and the inner grouting pipe.

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