Slurry stirring equipment for pile foundation grouting

Abstract

The utility model discloses slurry stirring equipment for pile foundation grouting. The slurry stirring equipment is characterized by comprising a rack, an upper stirring barrel, a lower stirring barrel and a stirring mechanism, the upper stirring barrel is arranged right above the lower stirring barrel; the stirring mechanism comprises a stirring shaft, a plurality of stirring blades arranged outside the stirring shaft and a driving part for driving the stirring shaft to rotate, the upper part of the stirring shaft is rotationally connected with the rack above the upper stirring barrel, and the driving part is connected with the top of the stirring shaft; the middle part of the stirring shaft is rotationally connected with the bottom of the upper stirring barrel, the bottom of the stirring shaft is inserted into the lower stirring barrel, and the stirring blades are respectively arranged in the upper stirring barrel and the lower stirring barrel; an upper discharge hole is formed in the bottom of the upper stirring barrel, and the upper discharge hole is formed right above the lower stirring barrel; and a lower discharge hole is formed in the side wall of the bottom of the lower stirring barrel. According to the utility model, the stirring efficiency and quality are improved.

Description

Technical Field

[0001] The utility model relates to a pile foundation, in particular to a slurry stirring device for pile foundation grouting. Background Art

[0002] Post-grouting of bored piles refers to the process of injecting cement slurry through the grouting conduit preset in the pile body and the grouting valves at the pile end and pile side connected to it a certain period of time after the bored pile is formed, so that the soil at the pile end and pile side (including sediment and mud skin) is reinforced, thereby improving the bearing capacity of the single pile and reducing settlement.

[0003] Among them, when grouting the steel pipe piles, it is necessary to use a stirring device to stir the slurry, and the stirred slurry is extracted through the grouting equipment and injected into the steel pipe piles.

[0004] In the prior art, the slurry mixing equipment adopts the most common mixing barrel and mixing shaft, and the mixing shaft is used to mix the cement and water mixture (or other materials may be added) in the mixing barrel. During the mixing process, the slurry will be pumped away for grouting. This method has the following disadvantages:

[0005] 1. Since the grouting is done while stirring, the slurry that is not very evenly stirred is often also pumped out for grouting, which will affect the grouting quality of the steel pipe piles;

[0006] 2. In order to improve the mixing efficiency, a larger mixing equipment is conventionally used for mixing. This method takes up a large space and is relatively more expensive. If there is not enough space to place a larger mixing equipment, there will be a problem of poor slurry quality. Summary of the invention

[0007] The utility model aims to provide a slurry stirring device for pile foundation grouting. By using the structure, the stirring efficiency and stirring effect are improved, the space occupation is reduced, and the cost is reduced.

[0008] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a slurry mixing device for pile foundation grouting, comprising a frame, a mixing barrel and a mixing mechanism installed on the frame;

[0009] The mixing barrel comprises an upper mixing barrel and a lower mixing barrel, wherein the upper mixing barrel is arranged directly above the lower mixing barrel, and a vertical distance is provided between the upper mixing barrel and the lower mixing barrel;

[0010] The stirring mechanism includes a stirring shaft, a plurality of stirring blades arranged outside the stirring shaft, and a driving component for driving the stirring shaft to rotate, wherein the driving component is installed on a frame above the upper stirring barrel, the upper part of the stirring shaft is rotatably connected to the frame above the upper stirring barrel, and the driving component is connected to the top of the stirring shaft;

[0011] The middle portion of the stirring shaft is rotatably connected to the bottom of the upper stirring barrel, and the bottom of the stirring shaft is inserted into the lower stirring barrel;

[0012] The stirring blades include a plurality of upper stirring blades and a plurality of lower stirring blades, wherein the upper stirring blades are arranged in the upper stirring barrel, and the lower stirring blades are arranged in the lower stirring barrel;

[0013] An upper discharge port is provided at the bottom of the upper mixing barrel, and the upper discharge port is arranged directly above the lower mixing barrel;

[0014] A lower discharge port is arranged on the bottom side wall of the lower mixing barrel, and a connecting pipe is arranged outside the lower discharge port.

[0015] In the above technical solution, the upper stirring barrel is provided with an upper stirring chamber connected to the top of the upper stirring barrel, and the lower stirring barrel is provided with a lower stirring chamber connected to the top of the lower stirring barrel;

[0016] The upper stirring blade is arranged in the upper stirring chamber, and the lower stirring blade is arranged in the lower stirring chamber.

[0017] In the above technical solution, the top of the upper discharge port is communicated with the bottom of the upper stirring chamber, and the upper discharge port is arranged directly above the lower stirring chamber.

[0018] In the above technical solution, a baffle is rotatably mounted at the bottom of the upper discharge port to open and close the upper discharge port, and the left side of the baffle is rotatably connected to the upper mixing barrel via a rotating shaft;

[0019] When the baffle is subjected to an external force, the right end of the baffle is pushed to rotate upward counterclockwise to gradually close the upper discharge port;

[0020] When the baffle is not subjected to external force, the right end of the baffle automatically rotates clockwise downward and gradually opens the upper discharge port.

[0021] In the above technical solution, the topmost lower stirring blade is arranged close to the top of the upper stirring barrel;

[0022] An extension plate extending upward is provided at the outer end of the topmost lower stirring blade, and a driving wheel is rotatably mounted on the extension plate. The bottom of the driving wheel is arranged close to the bottom surface of the upper stirring barrel, or the bottom of the driving wheel is arranged against the bottom surface of the upper stirring barrel.

[0023] In the above technical solution, when the driving wheel rotates and passes below the upper discharge port, the driving wheel drives the right end of the baffle to rotate counterclockwise upward, and gradually closes the upper discharge port through the baffle.

[0024] In the above technical solution, a plurality of upper stirring blades are arranged on the outer surface of the stirring shaft in a circular pattern from top to bottom, and the bottom surface of the bottommost upper stirring blade is arranged close to the bottom surface of the upper stirring chamber;

[0025] A plurality of lower stirring blades are arranged on the outer surface of the stirring shaft in a circular pattern from bottom to top, and the bottom surface of the lower stirring blade at the bottom is arranged close to the bottom surface of the lower stirring chamber.

[0026] In the above technical solution, a water pipe clamp is provided at the top outer edge of the upper mixing barrel.

[0027] In the above technical solution, the driving component includes a motor and a reducer, and the motor is connected to the top of the stirring shaft via the reducer.

[0028] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0029] 1. The utility model adopts the structure of upper and lower double mixing barrels. The two mixing barrels are stirred at the same time by the same stirring mechanism. After the materials in the upper mixing barrel are stirred, they are stirred for the second time by the lower mixing barrel. This can effectively improve the mixing efficiency and quality, reduce the space occupied, ensure the grouting quality, and reduce the cost.

[0030] 2. In the utility model, during the stirring process, the upper discharge port of the upper stirring barrel will be opened or closed by the baffle as the stirring shaft rotates, thus giving the upper stirring barrel sufficient stirring time, thereby improving the stirring efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the structure of the first embodiment of the present utility model;

[0032] Figure 2 It is a schematic cross-sectional view of the structure of the first embodiment of the present utility model;

[0033] Figure 3 It is a structural schematic diagram of the process in which the driving wheel pushes the baffle to gradually close the upper discharge port in the first embodiment of the utility model.

[0034] Among them: 1. frame; 2. upper mixing barrel; 3. lower mixing barrel; 4. mixing shaft; 5. mixing blade; 6. driving component; 7. upper mixing blade; 8. lower mixing blade; 9. upper discharge port; 10. lower discharge port; 11. connecting pipe; 12. upper mixing chamber; 13. lower mixing chamber; 14. baffle; 15. rotating shaft; 16. extension plate; 17. driving wheel; 18. water pipe clamp. DETAILED DESCRIPTION

[0035] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0036] Example 1: See Figures 1 to 3 As shown, a slurry mixing device for pile foundation grouting includes a frame 1, a mixing barrel and a mixing mechanism installed on the frame 1;

[0037] The mixing barrel comprises an upper mixing barrel 2 and a lower mixing barrel 3, wherein the upper mixing barrel 2 is arranged directly above the lower mixing barrel 3, and a vertical distance is provided between the upper mixing barrel 2 and the lower mixing barrel 3;

[0038] The stirring mechanism includes a stirring shaft 4, a plurality of stirring blades 5 arranged outside the stirring shaft 4, and a driving component 6 for driving the stirring shaft to rotate, wherein the driving component 6 is installed on the frame 1 above the upper stirring barrel 2, the upper part of the stirring shaft 4 is rotationally connected to the frame 1 above the upper stirring barrel 2, and the driving component 6 is connected to the top of the stirring shaft 4;

[0039] The middle portion of the stirring shaft 4 is rotatably connected to the bottom of the upper stirring barrel 2 , and the bottom of the stirring shaft 4 is inserted into the lower stirring barrel 3 ; and the bottom of the stirring shaft is rotatably connected to the bottom of the lower stirring barrel.

[0040] The stirring blades 5 include a plurality of upper stirring blades 7 and a plurality of lower stirring blades 8. The upper stirring blades 7 are disposed in the upper stirring barrel 2, and the lower stirring blades 8 are disposed in the lower stirring barrel 3.

[0041] An upper discharge port 9 is provided at the bottom of the upper mixing barrel 2, and the upper discharge port 9 is arranged directly above the lower mixing barrel 2;

[0042] A lower discharge port 10 is disposed on the bottom side wall of the lower mixing barrel 3 , and a connecting pipe 11 is disposed outside the lower discharge port 10 .

[0043] In this embodiment, in actual use, the staff directly adds water, cement and other materials into the upper mixing barrel. In this process, the driving component drives the mixing shaft to rotate. When the mixing shaft rotates, the upper mixing blade and the lower mixing blade are driven to rotate. When the upper mixing blade rotates, the water, cement or other materials in the upper mixing barrel are stirred and mixed. During the stirring process, part of the stirred mixture will flow out of the upper mixing barrel from the upper discharge port. Since the lower mixing barrel is directly arranged below the upper mixing barrel, the mixture that has been mixed once, or water, part of cement that has not been completely stirred, and other materials will also flow into the lower mixing barrel from the upper discharge port, and be stirred again by the lower mixing blade, so that the slurry is stirred more evenly. The material that is stirred more evenly will be sent out from the lower discharge port and the connecting pipe, wherein the connecting pipe will be connected to a grouting device, and the material in the lower discharge port will be extracted for grouting through the grouting device. The speed of the slurry flowing out of the lower discharge port matches the grouting speed of the grouting equipment, and the size of the lower discharge port is smaller than that of the upper discharge port. Therefore, the slurry in the lower mixing barrel will be more than that in the upper mixing barrel. In this way, the slurry is pre-mixed in the upper mixing barrel and then stirred again in the lower mixing barrel, thereby improving the uniformity of the slurry, and will not take up more space, and the cost is lower. At the same time, the same driving component is used to drive the slurry in the two mixing barrels to be stirred at the same time, which has lower energy consumption and lower cost.

[0044] The upper stirring barrel 2 is provided with an upper stirring chamber 12 connected to the top of the upper stirring barrel 2, and the lower stirring barrel 3 is provided with a lower stirring chamber 13 connected to the top of the lower stirring barrel 3;

[0045] The upper stirring blade is arranged in the upper stirring chamber, and the lower stirring blade is arranged in the lower stirring chamber.

[0046] The slurry in the upper stirring chamber is pre-stirred or stirred once by the upper stirring blade, and the slurry in the lower stirrer is stirred again by the lower stirring blade, so as to ensure the uniformity and quality of the slurry.

[0047] See also Figure 2 As shown, the top of the upper discharge port is connected to the bottom of the upper stirring chamber, and the upper discharge port is arranged directly above the lower stirring chamber. In this way, the slurry in the upper stirring barrel during the stirring process will flow down from the upper discharge port and directly flow into the lower stirring barrel.

[0048] See also Figure 2 , 3 As shown, a baffle 14 for opening and closing the upper discharge port 9 is rotatably mounted at the bottom of the upper discharge port 9, and the left side of the baffle 14 is rotatably connected to the upper mixing barrel 2 via a rotating shaft 15;

[0049] When the baffle is subjected to an external force, the right end of the baffle is pushed to rotate upward counterclockwise to gradually close the upper discharge port;

[0050] When the baffle is not subjected to external force, the right end of the baffle automatically rotates clockwise downward and gradually opens the upper discharge port.

[0051] By setting the baffle, the baffle can open or close the upper discharge port. When it is closed, the slurry in the upper mixing barrel can stay in the upper mixing barrel for a longer time, so that it can be more fully stirred by the upper stirring blades, thereby improving the uniformity of the slurry stirring. When the baffle is opened, although some slurry will flow out of the upper discharge port during this process, some slurry will also remain in the upper mixing barrel and be stirred again by the upper stirring blades, thereby ensuring the uniformity of pre-mixing and facilitating re-mixing in the lower mixing barrel.

[0052] See also Figure 2 As shown, the topmost lower stirring blade is arranged close to the top of the upper stirring barrel;

[0053] An extension plate 16 extending upward is provided at the outer end of the lower stirring blade 8 at the top, and a driving wheel 17 is rotatably mounted on the extension plate 16. The bottom of the driving wheel is arranged close to the bottom surface of the upper stirring barrel, or the bottom of the driving wheel is arranged against the bottom surface of the upper stirring barrel.

[0054] When the driving wheel rotates and passes below the upper discharge port, the driving wheel drives the right end of the baffle to rotate counterclockwise upward, and gradually closes the upper discharge port through the baffle. In this embodiment, the top of the driving wheel is arranged close to the bottom surface of the upper mixing barrel.

[0055] In this embodiment, the topmost lower stirring blade is arranged close to the bottom surface of the upper stirring barrel, and a driving force is arranged at its outer end. When the stirring shaft drives the upper and lower stirring blades to rotate and stir, the driving force, when passing through the baffle, can push the right end of the baffle to gradually rotate upward and gradually close the upper discharge port, that is, reduce the speed and flow rate of the slurry flowing out of the upper discharge port, so that the slurry in the upper stirring barrel is retained inside for a longer time, so that the slurry pre-stirring time is longer and the pre-stirring effect is better. After the driving force leaves the baffle, due to the weight of the baffle and the downward thrust given to the baffle by the slurry inside the upper stirring barrel, the baffle will rotate clockwise around the upper stirring barrel through the rotating shaft, so that the baffle quickly opens the upper discharge port, so that the slurry in the upper stirring barrel quickly falls from the upper discharge port and flows into the lower stirring barrel. Among them, since the slurry is a fluid, the slurry will quickly flow into the lower mixing barrel from the upper discharge port. When the driving wheel continues to rotate to the bottom of the baffle, the driving force will push the baffle to rotate, so that the baffle will close the upper discharge port (it will not be completely closed, but most of the upper discharge port will be closed), and the cycle will continue. Among them, by adjusting the rotation speed of the stirring shaft, the closing frequency of the baffle to the upper discharge port can be adjusted according to different situations. At the same time, the top upper stirring blade can also be multiple, so that the driving wheel can also be multiple, so as to adjust the frequency of the upper discharge port discharge, and it is automatic discharge, and there is no need to set up a separate mechanism to adjust the opening and closing of the baffle, nor is there a need to manually open and close the baffle.

[0056] Among them, taking the slurry which is a mixture of water and cement as an example, during the stirring process of the stirring equipment, water and cement are continuously added to the upper stirring barrel, the upper stirring barrel is pre-stirred, and then the lower stirring barrel is stirred again, so that during the grouting process, there is always slurry in the upper and lower stirring barrels, and the grouting slurry has good uniformity.

[0057] Wherein, a plurality of upper stirring blades are arranged on the outer surface of the stirring shaft in a circular pattern from top to bottom, and the bottom surface of the upper stirring blade at the bottom is arranged close to the bottom surface of the upper stirring chamber;

[0058] A plurality of lower stirring blades are arranged on the outer surface of the stirring shaft in a circular pattern from bottom to top, and the bottom surface of the lower stirring blade at the bottom is arranged close to the bottom surface of the lower stirring chamber.

[0059] In this embodiment, the upper stirring blades and the lower stirring blades are arranged on the stirring shaft in an up-and-down staggered ring arrangement, and the material or slurry falls from top to bottom. In this way, the stirring blades arranged up and down can stir the slurry or logistics flow and moving direction as much as possible, thereby improving the stirring efficiency and quality.

[0060] See also Figure 1As shown, a water pipe clamp 18 is provided at the top outer edge of the upper mixing barrel. The water pipe clamp is provided so that the end of the water pipe is directly passed through the water pipe clamp and the end of the water pipe is clamped directly by the water pipe clamp, so that the water pipe can be added to the upper mixing barrel all the time, and there is no need to manually hold the water pipe to add water to the upper mixing barrel, thereby reducing the labor intensity of the operator.

[0061] The driving component includes a motor and a reducer, and the motor is connected to the top of the stirring shaft via the reducer. The motor and the reducer are used to directly drive the stirring shaft to rotate, so that the stirring shaft drives the upper stirring blade and the lower stirring blade to stir the slurry at the same time.

Claims

1. A slurry mixing device for pile foundation grouting, characterized in that: It includes a frame, a mixing barrel installed on the frame, and a mixing mechanism; The mixing barrel comprises an upper mixing barrel and a lower mixing barrel, wherein the upper mixing barrel is arranged directly above the lower mixing barrel, and a vertical distance is provided between the upper mixing barrel and the lower mixing barrel; The stirring mechanism includes a stirring shaft, a plurality of stirring blades arranged outside the stirring shaft, and a driving component for driving the stirring shaft to rotate, wherein the driving component is installed on a frame above the upper stirring barrel, the upper part of the stirring shaft is rotatably connected to the frame above the upper stirring barrel, and the driving component is connected to the top of the stirring shaft; The middle portion of the stirring shaft is rotatably connected to the bottom of the upper stirring barrel, and the bottom of the stirring shaft is inserted into the lower stirring barrel; The stirring blades include a plurality of upper stirring blades and a plurality of lower stirring blades, wherein the upper stirring blades are arranged in the upper stirring barrel, and the lower stirring blades are arranged in the lower stirring barrel; An upper discharge port is provided at the bottom of the upper mixing barrel, and the upper discharge port is arranged directly above the lower mixing barrel; A lower discharge port is arranged on the bottom side wall of the lower stirring barrel.

2. The slurry mixing equipment for pile foundation grouting according to claim 1, characterized in that: The upper stirring barrel is provided with an upper stirring chamber connected to the top of the upper stirring barrel, and the lower stirring barrel is provided with a lower stirring chamber connected to the top of the lower stirring barrel; The upper stirring blade is arranged in the upper stirring chamber, and the lower stirring blade is arranged in the lower stirring chamber.

3. The slurry mixing equipment for pile foundation grouting according to claim 2, characterized in that: The top of the upper discharge port is communicated with the bottom of the upper stirring chamber, and the upper discharge port is arranged directly above the lower stirring chamber.

4. The slurry mixing equipment for pile foundation grouting according to claim 1, characterized in that: A baffle is rotatably mounted at the bottom of the upper discharge port to open and close the upper discharge port, and the left side of the baffle is rotatably connected to the upper mixing barrel via a rotating shaft; When the baffle is subjected to an external force, the right end of the baffle is pushed to rotate upward counterclockwise to gradually close the upper discharge port; When the baffle is not subjected to external force, the right end of the baffle automatically rotates clockwise downward and gradually opens the upper discharge port.

5. The slurry mixing equipment for pile foundation grouting according to claim 4, characterized in that: The lower stirring blade at the top is arranged close to the top of the upper stirring barrel; An extension plate extending upward is provided at the outer end of the topmost lower stirring blade, and a driving wheel is rotatably mounted on the extension plate. The bottom of the driving wheel is arranged close to the bottom surface of the upper stirring barrel, or the bottom of the driving wheel is arranged against the bottom surface of the upper stirring barrel.

6. The slurry mixing equipment for pile foundation grouting according to claim 5, characterized in that: When the driving wheel rotates and passes below the upper discharge port, the driving wheel drives the right end of the baffle plate to rotate counterclockwise upward, and gradually closes the upper discharge port through the baffle plate.

7. The slurry mixing equipment for pile foundation grouting according to claim 2, characterized in that: A plurality of upper stirring blades are arranged on the outer surface of the stirring shaft in a circular pattern from top to bottom, and the bottom surface of the bottom upper stirring blade is arranged close to the bottom surface of the upper stirring chamber; A plurality of lower stirring blades are arranged on the outer surface of the stirring shaft in a circular pattern from bottom to top, and the bottom surface of the lower stirring blade at the bottom is arranged close to the bottom surface of the lower stirring chamber.

8. The slurry mixing equipment for pile foundation grouting according to claim 1, characterized in that: A water pipe clamp ring is arranged at the outer edge of the top of the upper mixing barrel.

9. The slurry mixing equipment for pile foundation grouting according to claim 1, characterized in that: The driving component includes a motor and a reducer, and the motor is connected to the top of the stirring shaft via the reducer.

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