Single-shaft stirring device good in sealing effect and not prone to slurry leakage

Abstract

The utility model discloses a single-shaft stirring device good in sealing effect and not prone to slurry leakage, and belongs to the technical field of stirring pile machines. The single-shaft stirring device comprises a stirring pile machine shell, one end of the stirring pile machine shell is rotationally connected with a hollow power rod, and a plurality of slurry inlet grooves are formed in the lower end of the hollow power rod in a circumferential equidistant array mode; an upper limiting piece and a first flange are welded to the upper end and the lower end of the part, extending into the stirring pile machine shell, of the hollow power rod correspondingly, and a rotating sleeve is rotationally connected between the outer side wall of the hollow power rod and the upper limiting piece and the first flange in a sealed and sleeved mode. According to the single-shaft stirring device good in sealing effect and not prone to grout leakage, the rotatable grouting assembly good in sealing effect is installed at the tail end of the hollow power rod, when the hollow power rod drives the hollow drill rod detachably installed at the tail end of the hollow power rod to rotate at a high speed, the rotatable grouting assembly cannot rotate at the high speed along with the hollow drill rod, smooth grouting is guaranteed, and meanwhile the grouting efficiency is improved. The sealing effect is good and slurry leakage is difficult.

Description

Technical Field

[0001] The utility model relates to the field of mixing pile machines, in particular to a single-shaft mixing device with good sealing effect and not easy to leak slurry. Background Technique

[0002] The cement mixing pile is an effective form of soft foundation treatment. It uses cement as the main curing agent. The mixing pile machine is used to spray cement into the soil and fully mix it, so that a series of physical and chemical reactions occur between the cement and the soil, making the soft soil harden and improving the foundation strength. According to the main construction methods used, the cement mixing pile is divided into single-shaft, double-shaft and triple-shaft mixing piles. When the single-shaft mixer works, there is no vibration, no noise, no pollution, and little impact on the surrounding environment. When mixing, there will be no lateral extrusion of the foundation, and little impact on the surrounding original buildings and underground pipelines. The cement-soil solid formed by the mixing pile can be used as a composite foundation for vertical bearing, a retaining wall for foundation pit engineering, and an anti-seepage curtain with a large volume and small size, which is actually flexible and can be reasonably designed according to the properties of different foundation soils and the requirements of engineering design.

[0003] Above the hollow drill pipe of the existing single-shaft mixing device with good sealing effect and not easy to leak slurry, it will be connected to the grouting component through a pipeline. When fixedly connected, the pipeline is easily damaged by the high-speed rotation of the hollow drill pipe. When movably connected, it is easy to leak slurry, and it is impossible to ensure a long service life of the pipeline and a good sealing effect at the same time. Content of the Utility Model

[0004] The purpose of the utility model is to provide a single-shaft mixing device with good sealing effect and not easy to leak slurry. At the end of the hollow power rod of the single-shaft mixing device with good sealing effect and not easy to leak slurry of the utility model, a rotatable grouting component with good sealing effect is installed. When the hollow power rod drives the hollow drill pipe detachably installed at its end to rotate at high speed, the rotatable grouting component will not rotate at high speed with it. While ensuring smooth grouting, the sealing effect is good and it is difficult to leak slurry, so as to solve the problems raised in the above background technique.

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

[0006] A single-shaft mixing device with good sealing effect and not easy to leak slurry, including a mixing pile machine housing. One end of the mixing pile machine housing is rotatably connected with a hollow power rod. A plurality of slurry inlet grooves are arranged at equal intervals in a circumferential array at the lower end of the hollow power rod. The upper end and the lower end of the part of the hollow power rod extending into the mixing pile machine housing are respectively welded with an upper limit piece and a first flange. A rotating sleeve is hermetically rotatably sleeved between the outer side wall of the hollow power rod, the upper limit piece and the first flange. A pipeline is connected to the opening of the rotating sleeve. The bottom of the hollow power rod is detachably connected with a hollow drill pipe. A plurality of groups of blades are installed at the bottom of the hollow drill pipe. A plurality of groups of slurry outlet holes are arranged at the bottom of the hollow drill pipe.

[0007] As a further solution of the utility model: the power input end of the hollow power rod is connected to the power output end of the motor, and the motor is detachably mounted on the top of the pile mixing machine casing through a frame.

[0008] As a further solution of the utility model: the other end of the pipeline is connected to a grouting neck through a grouting pump, and the outer side wall of the grouting neck is welded with a plurality of reinforcing plates in a straight and equidistant array, and a top ring is welded on the top of the reinforcing plate.

[0009] As a further solution of the utility model: a second flange is welded to the outer side wall of the top of the hollow drill rod, and the second flange is detachably mounted on the bottom of the first flange welded to the bottom of the hollow power rod by bolts.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The utility model discloses a rotatable grouting assembly with good sealing effect is installed at the end of the hollow power rod of the single-axis stirring device with good sealing effect and not prone to leakage. When the hollow power rod drives the hollow drill rod detachably installed at the end thereof to rotate at high speed, the rotatable grouting assembly will not rotate with the high speed, thereby ensuring smooth grouting and having good sealing effect and not prone to leakage. The utility model solves the problem that the top of the hollow drill rod of the existing single-axis stirring device with good sealing effect and not prone to leakage is connected to the grouting assembly through a pipeline, and when the connection is fixed, the pipeline is easily damaged as the hollow drill rod rotates at high speed, and when the connection is movable, it is easy to leak, and it is impossible to ensure a long service life of the pipeline while having a good sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural schematic diagram of a single-axis stirring device with good sealing effect and low slurry leakage according to an embodiment of the utility model;

[0013] Figure 2 for Figure 1 The structural diagram at A in the middle;

[0014] Figure 3 It is a cross-sectional structural schematic diagram of a single-axis stirring device with good sealing effect and low slurry leakage according to an embodiment of the utility model;

[0015] Figure 4 for Figure 3 Schematic diagram of the structure at B in the figure.

[0016] In the figure: 1. Casing of the pile mixing machine; 2. Grouting pump; 3. Reinforcement plate; 4. Top ring; 5. Grouting neck; 6. Pipeline; 7. Frame; 8. Motor; 9. Hollow drill rod; 10. Slurry outlet hole; 11. Blade; 12. Upper limit plate; 13. Rotary sleeve; 14. Slurry inlet groove; 15. First flange; 16. Second flange; 17. Hollow power rod; 18. Bolt. DETAILED DESCRIPTION

[0017] Next, in combination with the accompanying drawings and specific embodiments, the present utility model will be further described. It should be noted that, on the premise of not conflicting with each other, any combination can be formed between the following-described embodiments or technical features to form a new embodiment. Except for special instructions, the materials and equipment used in this embodiment can be purchased from the market. The examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application.

[0018] Please refer to Figures 1 to 4 , in the embodiment of the present utility model, a single-shaft mixing device with good sealing effect and not easy to leak slurry includes a mixing pile machine housing 1. One end of the mixing pile machine housing 1 is rotatably connected with a hollow power rod 17. A plurality of slurry inlet grooves 14 are arranged at equal circumferential intervals at the lower end of the hollow power rod 17. Upper limit pieces 12 and first flanges 15 are welded to the upper and lower ends of the part of the hollow power rod 17 extending into the mixing pile machine housing 1 respectively. A rotating sleeve 13 is hermetically rotatably sleeved between the outer side wall of the hollow power rod 17, the upper limit piece 12 and the first flange 15. A pipeline 6 is connected to the opening of the rotating sleeve 13. The bottom of the hollow power rod 17 is detachably connected with a hollow drill rod 9. A plurality of groups of blades 11 are installed at the bottom of the hollow drill rod 9. A plurality of groups of slurry outlet holes 10 are opened at the bottom of the hollow drill rod 9. A rotatable grouting assembly with good sealing effect is installed at the end of the hollow power rod 17 of the single-shaft mixing device with good sealing effect and not easy to leak slurry of the present utility model. When the hollow power rod 17 drives the hollow drill rod 9 detachably installed at its end to rotate at a high speed, the rotatable grouting assembly will not rotate at a high speed with it. While ensuring smooth grouting, the sealing effect is good and it is difficult to leak slurry.

[0019] Among them, the power input end of the hollow power rod 17 is connected to the power output end of a motor 8. The motor 8 is detachably installed on the top of the mixing pile machine housing 1 through a frame 7 for convenient driving. Among them, the other end of the pipeline 6 is connected to a grouting neck 5 through a grouting pump 2. A plurality of reinforcing pieces 3 are welded to the outer side wall of the grouting neck 5 at equal linear intervals. A top ring 4 is welded to the top of the reinforcing piece 3 to increase the strength at the grouting neck 5. Among them, a second flange 16 is welded to the outer side wall of the top of the hollow drill rod 9. The second flange 16 is detachably installed at the bottom of the first flange 15 welded to the bottom of the hollow power rod 17 through bolts 18 for convenient installation or disassembly of the hollow drill rod 9.

[0020] The working principle of the present utility model is as follows: At the end of the hollow power rod 17 of the single-shaft stirring device with good sealing effect and not easy to leak slurry of the present utility model, a rotatable grouting assembly with good sealing effect is installed. When the hollow power rod 17 drives the hollow drill rod 9 detachably installed at its end to rotate at a high speed, the rotatable grouting assembly will not rotate at a high speed along with it. While ensuring smooth grouting, the sealing effect is good and it is difficult to leak slurry. Before use, align the second flange 16 at the top of the hollow drill rod 9 with the first flange 15 at the bottom of the hollow power rod 17, and screw the bolt 18 into the through hole for fixation. The external power supply is supplied through the external switch to turn on the grouting pump 2 and the motor 8. The motor 8 drives the hollow power rod 17 and the hollow drill rod 9 to rotate at a high speed synchronously for drilling. Since a rotating sleeve 13 is hermetically and rotatably sleeved between the outer side wall of the hollow power rod 17, the upper limit piece 12 and the first flange 15, and the rotating sleeve 13 is subjected to the force of the upper pipeline 6 thereon and will not rotate at a high speed along with the hollow power rod 17, the probability of damage after the pipeline 6 rotates multiple circles is greatly reduced. Moreover, the rotating sleeve 13 is rigidly and hermetically rotatably connected to the outer side wall of the hollow power rod 17. On the basis of not hindering grouting, it is difficult to leak slurry and the sealing performance is good (both the grouting pump 2 and the motor 8 are existing products on the market).

[0021] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent replacements or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A single-axis stirring device with good sealing effect and low leakage, comprising a stirring pile machine housing (1), characterized in that: A hollow power rod (17) is rotatably connected to one end of the pile mixing machine housing (1), and a plurality of slurry inlet grooves (14) are provided at the lower end of the hollow power rod (17) in a circumferentially equidistant array. An upper limit plate (12) and a first flange (15) are respectively welded to the upper and lower ends of the part of the hollow power rod (17) extending into the pile mixing machine housing (1). A rotating sleeve (13) is sealingly rotatably sleeved between the outer wall of the hollow power rod (17), the upper limit plate (12) and the first flange (15), and a pipe (6) is connected to the opening of the rotating sleeve (13). A hollow drill rod (9) is detachably connected to the bottom of the hollow power rod (17), and a plurality of blades (11) are installed at the bottom of the hollow drill rod (9). A plurality of slurry outlet holes (10) are provided at the bottom of the hollow drill rod (9).

2. The single-axis stirring device with good sealing effect and low leakage according to claim 1 is characterized in that: The power input end of the hollow power rod (17) is connected to the power output end of the motor (8), and the motor (8) is detachably mounted on the top of the pile mixing machine housing (1) via a frame (7).

3. The single-axis stirring device with good sealing effect and low leakage according to claim 1 is characterized in that: The other end of the pipeline (6) is connected to a grouting neck (5) via a grouting pump (2), and the outer wall of the grouting neck (5) is welded with a plurality of reinforcing plates (3) in a straight and equidistant array, and a top ring (4) is welded on the top of the reinforcing plate (3).

4. The single-axis stirring device with good sealing effect and low leakage according to claim 1 is characterized in that: A second flange (16) is welded to the outer side wall of the top of the hollow drill rod (9), and the second flange (16) is detachably mounted on the bottom of the first flange (15) welded to the bottom of the hollow power rod (17) by bolts (18).

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