Pile foundation mud jacking device

Abstract

The utility model discloses a pile foundation mud jacking device and belongs to the technical field of mud jacking, the pile foundation mud jacking device comprises a mud jacking pipe, a one-way valve and a flushing assembly, one end of the mud jacking pipe is provided with a leading-in port, the other end of the mud jacking pipe is provided with a leading-out port, the one-way valve is arranged at the leading-out port, and the flushing assembly comprises a flushing pipe and a flushing valve. The flushing pipe is communicated with the end, close to the guide-in opening, of the mud jacking pipe, and the flushing valve is arranged on the flushing pipe to control on-off of the flushing pipe. Firstly, the mud jacking pipe extends into an area to be poured, then mud is guided into the guide-in opening, and the mud in the mud jacking pipe can flow into the area to be poured through the guide-out opening. Due to the fact that the one-way valve is arranged at the guide outlet, the one-way valve can prevent mud in the pouring area from flowing back into the mud jacking pipe. And after the pouring work is completed, the flushing valve can be opened, water flow is guided into the grouting pipe through the flushing pipe, then the inner wall of the grouting pipe is flushed through the water flow, and then solidified slurry is prevented from adhering to the inner wall of the grouting pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of grouting, and particularly relates to a pile foundation grouting device Background Art

[0002] The grouting device is used to pump slurry into the area to be poured. For the existing pressure drop device, reference can be made to the patent with the application number CN201621024859.7. One end of the grouting pipe is provided with a detachable grouting unit body, and the detachable grouting unit body is provided with a detachable one-way valve. The detachable one-way valve includes a valve body, a check valve spool shaft is arranged on the upper side of the valve body, a check piston is arranged at one end of the check valve spool shaft, and a spring is arranged outside the check valve spool shaft. When grouting, the spring is stretched by force, and at this time, the slurry leaves the valve body from the check piston; when no slurry is injected, the check piston blocks the slurry outlet under the action of the pressure of the external slurry and the tension of the spring, reducing the possibility of slurry backflow. However, after the grouting operation is completed, part of the slurry will adhere to the inner wall of the grouting pipe and solidify and adhere to the inner wall of the grouting pipe, ultimately causing the grouting pipe to be blocked

[0003] Therefore, how to avoid the solidified slurry from adhering to the inner wall of the grouting pipe is a technical problem to be solved urgently Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the above technical deficiencies, and propose a pile foundation grouting device to solve the technical problem of how to avoid the solidified slurry from adhering to the inner wall of the grouting pipe in the prior art

[0005] To achieve the above technical purpose, the utility model adopts the following technical solutions

[0006] A pile foundation grouting device, which includes

[0007] A grouting pipe, one end of which is provided with a guiding inlet, and the other end is provided with a guiding outlet

[0008] A one-way valve, which is installed at the guiding outlet

[0009] A flushing assembly, which includes a flushing pipe and a flushing valve. The flushing pipe is connected to one end of the grouting pipe close to the guiding inlet, and the flushing valve is installed on the flushing pipe to control the on-off of the flushing pipe

[0010] In some embodiments, the flushing valve includes a plunger and an elastic member. The plunger slides along the axis direction of the guiding outlet, and on the sliding track of the plunger, there is a first position embedded in the guiding outlet and a second position separated from the guiding outlet

[0011] In some embodiments, the elastic member includes a guide rod and a spring. The guide rod is installed in the grouting pipe. The plunger is provided with a guide hole, and the guide hole is sleeved on the guide rod so that the plunger slides along the guide rod. One end of the spring is connected to the plunger, and the other end is connected to the grouting pipe. The spring has an elastic force that moves the plunger to the first position.

[0012] In some embodiments, one end of the guide rod away from the grouting pipe has a limiting portion, and the limiting portion prevents the plunger from detaching from the guide rod.

[0013] In some embodiments, the outlet has a small head end close to the inner wall of the grouting pipe and a large head end close to the outer wall of the grouting pipe. When the plunger is in the first position, the outer wall of the plunger fits the inner wall of the outlet.

[0014] In some embodiments, the pile foundation grouting device further includes a grouting valve, and the grouting valve is installed at the inlet to control the opening and closing of the inlet.

[0015] In some embodiments, the grouting valve is a spherical valve.

[0016] In some embodiments, the communication port of the flushing pipe is tangent to the inner wall of the grouting pipe, so that the water flow introduced into the grouting pipe becomes a spiral water flow under the guidance of the inner wall of the grouting pipe.

[0017] In some embodiments, the outer wall of the grouting pipe near the outlet has a guiding conical surface.

[0018] In some embodiments, the grouting pipe is a stainless steel grouting pipe.

[0019] First, extend the grouting pipe into the area to be poured. Then, introduce slurry into the inlet. The slurry in the grouting pipe will flow into the area to be poured through the outlet. Since a one-way valve is installed at the outlet, the one-way valve can prevent the slurry in the pouring area from flowing back into the grouting pipe. After the pouring work is completed, the flushing valve can be opened and water flow can be introduced into the grouting pipe through the flushing pipe, thereby flushing the inner wall of the grouting pipe with water flow, and thus preventing the solidified slurry from sticking to the inner wall of the grouting pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the pile foundation grouting device provided by an embodiment of the present invention;

[0021] Figure 2 is a partial schematic diagram of the one-way valve provided by an embodiment of the present invention;

[0022] Figure 3 is a partial schematic diagram of the connection between the grouting pipe and the flushing pipe provided by an embodiment of the present invention;

[0023] Description of reference numerals: grouting pipe 100, inlet 110, outlet 120, guiding conical surface 130, check valve 200, flushing assembly 300, flushing pipe 310, flushing valve 320, plunger 321, guide hole 3211, elastic member 322, guide rod 3221, limiting portion 32211, spring 3222, grouting valve 400. Detailed implementation manners

[0024] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0025] In order to solve the technical problem of how to avoid the coagulated slurry sticking to the inner wall of the grouting pipe 100, the present utility model provides a pile foundation grouting device, which can flush the inner wall of the grouting pipe 100 through water flow, thereby avoiding the coagulated slurry sticking to the inner wall of the grouting pipe 100.

[0026] It should be noted that the pile foundation grouting device described in the present utility model is used for but not limited to slurry pouring, etc. For the convenience of description, in the present utility model, only the case where the pile foundation grouting device is applied to slurry pouring is taken as an example for description, and the principle of the pile foundation grouting device applied to other types of equipment is substantially the same as that applied to slurry pouring, and will not be elaborated herein one by one.

[0027] Please refer to Figure 1 , Figure 1 , which is a schematic structural diagram of the pile foundation grouting device in an embodiment of the present utility model. The pile foundation grouting device includes a grouting pipe 100, a check valve 200 and a flushing assembly 300. Among them, one end of the grouting pipe 100 is provided with an inlet 110, and the other end is provided with an outlet 120. The check valve 200 is installed at the outlet 120. The flushing assembly 300 includes a flushing pipe 310 and a flushing valve 320. The flushing pipe 310 communicates with one end of the grouting pipe 100 close to the inlet 110. The flushing valve 320 is installed on the flushing pipe 310 to control the on-off of the flushing pipe 310.

[0028] In this embodiment, first, the grouting pipe 100 is extended into the area to be poured, and then the slurry is introduced into the inlet 110. The slurry in the grouting pipe 100 will flow into the area to be poured through the outlet 120. Since the check valve 200 is installed at the outlet 120, the check valve 200 can prevent the slurry in the pouring area from flowing back into the grouting pipe 100. After the pouring work is completed, the flushing valve 320 can be opened and water flow can be introduced into the grouting pipe 100 through the flushing pipe 310, thereby flushing the inner wall of the grouting pipe 100 through the water flow, and further avoiding the coagulated slurry sticking to the inner wall of the grouting pipe 100.

[0029] In some of these embodiments, the flushing valve 320 includes a plunger 321 and an elastic member 322. The plunger 321 slides along the axial direction of the discharge port 120, and on the sliding trajectory of the plunger 321, there is a first position embedded in the discharge port 120 and a second position disengaged from the discharge port 120.

[0030] In this embodiment, as mud is continuously introduced into the grouting pipe 100 through the inlet 110, the pressure inside the grouting pipe 100 gradually increases, thereby pushing the plunger 321 to move from the first position to the second position, enabling the mud inside the grouting pipe 100 to pass through the discharge port 120 and enter the area to be poured. When the introduction of mud into the inlet 110 stops, the pressure inside the grouting roller decreases, and the plunger 321 will return to the first position under the elastic force of the elastic member 322, thus closing the discharge port 120 and preventing the mud inside the discharge port 120 from flowing back into the grouting pipe 100.

[0031] Based on the above embodiments, in some of these embodiments, the elastic member 322 includes a guide rod 3221 and a spring 3222. The guide rod 3221 is installed on the grouting pipe 100. The plunger 321 is provided with a guide hole 3211, and the guide hole 3211 is sleeved on the guide rod 3221 to enable the plunger 321 to slide along the guide rod 3221. One end of the spring 3222 is connected to the plunger 321, and the other end is connected to the grouting pipe 100. The spring 3222 has an elastic force that moves the plunger 321 towards the first position.

[0032] In this embodiment, since the guide rod 3221 guides the plunger 321, the plunger 321 slides along the guide rod 3221, enabling the plunger 321 to have a stable sliding trajectory, ensuring that the plunger 321 can be aligned with the discharge port 120, and preventing the sliding trajectory of the plunger 321 from shifting and being unable to be smoothly embedded in the discharge port 120.

[0033] Based on the above embodiments, in some of these embodiments, the end of the guide rod 3221 away from the grouting pipe 100 has a limiting portion 32211, and the limiting portion 32211 prevents the plunger 321 from disengaging from the guide rod 3221.

[0034] In this embodiment, under the blockage of the limiting portion 32211, the plunger 321 can be effectively prevented from disengaging from the guide rod 3221.

[0035] In some of these embodiments, the discharge port 120 has a small head end close to the inner wall of the grouting pipe 100 and a large head end close to the outer wall of the grouting pipe 100. When the plunger 321 is in the first position, the outer wall of the plunger 321 fits against the inner wall of the discharge port 120.

[0036] In this embodiment, since the outlet 120 has a small head end close to the inner wall of the grouting pipe 100 and a large head end close to the outer wall of the grouting pipe 100, when the plunger 321 moves from the first position to the second position, the plunger 321 will disengage from the large head end of the outlet 120. And when the plunger 321 moves from the second position to the first position, since the plunger 321 cannot pass through the small head end of the outlet 120, it is possible to prevent the plunger 321 from entering the interior of the grouting pipe 100 and opening the outlet 120.

[0037] In some embodiments, the pile foundation grouting device further includes a grouting valve 400, and the grouting valve 400 is installed at the inlet 110 to control the opening and closing of the inlet 110.

[0038] In this embodiment, when it is necessary to introduce slurry into the grouting pipe 100 through the inlet 110, the grouting valve 400 can be opened, thereby opening the inlet 110. When stopping introducing slurry into the grouting pipe 100 through the inlet 110, the grouting valve 400 can be closed, thereby closing the inlet 110.

[0039] In some embodiments, the grouting valve 400 is a spherical valve.

[0040] In this embodiment, the spherical valve has good pressure-bearing capacity, and using the spherical valve as the grouting valve 400 can work more stably.

[0041] In some embodiments, the communication port of the flushing pipe 310 is tangent to the inner wall of the grouting pipe 100, so that the water flow introduced into the grouting pipe 100 becomes a spiral water flow under the guidance of the inner wall of the grouting pipe 100.

[0042] In some embodiments, the outer wall of one end of the grouting pipe 100 close to the outlet 120 has a guiding conical surface 130.

[0043] In this embodiment, the guiding conical surface 130 can play a guiding role, which helps the grouting pipe 100 to penetrate into the unhardened slurry and reach the area to be poured.

[0044] In some embodiments, the grouting pipe 100 is a stainless steel grouting pipe 100.

[0045] In this embodiment, since the grouting pipe 100 is a stainless steel grouting pipe 100, the grouting pipe 100 has good corrosion resistance.

[0046] For a better understanding of the present invention, the following Figures 1 to 3 will describe the technical solution of the present invention in detail:

[0047] First, extend the grouting pipe 100 into the area to be poured. Then, open the grouting valve 400 and introduce slurry into the guiding inlet 110. The pressure inside the grouting pipe 100 gradually increases, thereby pushing the plunger 321 to move from the first position to the second position, so that the slurry inside the grouting pipe 100 can pass through the guiding outlet 120 and enter the area to be poured. When the introduction of slurry into the guiding inlet 110 stops, the pressure inside the grouting roller decreases, and the plunger 321 will return to the first position under the elastic force of the elastic member 322, thereby closing the guiding outlet 120 and preventing the slurry inside the guiding outlet 120 from flowing back into the grouting pipe 100. After the pouring work is completed, the flushing valve 320 can be opened and water can be introduced into the grouting pipe 100 through the flushing pipe 310, and then the inner wall of the grouting pipe 100 can be flushed by the water, thereby preventing the solidified slurry from sticking to the inner wall of the grouting pipe 100.

[0048] The specific implementation manners of the present utility model described above do not constitute a limitation to the protection scope of the present utility model. Any other corresponding changes and deformations made according to the technical concept of the present utility model shall be included in the protection scope of the claims of the present utility model.

Claims

1. A pile foundation grouting device, characterized in that: include: A grouting pipe, one end of which is provided with an inlet, and the other end of which is provided with an outlet; A one-way valve, which is installed at the outlet; The flushing assembly comprises a flushing pipe and a flushing valve. The flushing pipe is connected to one end of the grouting pipe close to the inlet. The flushing valve is installed on the flushing pipe to control the on and off of the flushing pipe.

2. The pile foundation grouting device according to claim 1, characterized in that: The flushing valve comprises a plunger and an elastic member. The plunger slides along the axial direction of the outlet, and the sliding track of the plunger has a first position embedded in the outlet and a second position separated from the outlet.

3. The pile foundation grouting device according to claim 2, characterized in that: The elastic member includes a guide rod and a spring, the guide rod is installed on the grouting pipe, the plunger is provided with a guide hole, and the guide hole is sleeved on the guide rod so that the plunger can slide along the guide rod. One end of the spring is connected to the plunger, and the other end is connected to the grouting pipe. The spring has an elastic force that moves the plunger to the first position.

4. The pile foundation grouting device according to claim 3, characterized in that: The guide rod has a limiting portion at one end away from the grouting pipe, and the limiting portion prevents the plunger from being separated from the guide rod.

5. The pile foundation grouting device according to claim 2, characterized in that: The guide outlet has a small end close to the inner wall of the grouting pipe, and a large end close to the outer wall of the grouting pipe. When the plunger is in the first position, the outer wall of the plunger fits the inner wall of the guide outlet.

6. The pile foundation grouting device according to claim 1, characterized in that: The pile foundation grouting device also includes a grouting valve, which is installed at the introduction port to control the opening and closing of the introduction port.

7. The pile foundation grouting device according to claim 6, characterized in that: The grouting valve is a spherical valve.

8. The pile foundation grouting device according to claim 1, characterized in that: The connecting port of the flushing pipe is tangent to the inner wall of the grouting pipe, so that the water flow introduced into the grouting pipe becomes a spiral water flow under the guidance of the inner wall of the grouting pipe.

9. The pile foundation grouting device according to claim 1, characterized in that: The outer wall of the grouting pipe close to one end of the outlet has a guiding cone surface.

10. The pile foundation grouting device according to claim 1, characterized in that: The grouting pipe is a stainless steel grouting pipe.

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