Dual positive-negative reciprocal mixing mechanism

Abstract

The utility model relates to a double positive and negative mutual stirring mechanism, it includes gear box, is equipped with speed reducer on gear box, is equipped with motor on speed reducer, is equipped with inside and outside combination drill rod in the gear box near speed reducer, is equipped with two double shunt in the inner drill rod top, is equipped with drill bit with the bottom connection of inner drill rod, is equipped with at least one nozzle in the drill bit lower part, is equipped with sword row on the drill bit near nozzle, the nozzle is connected with slurry pipe, is equipped with outer drill rod protector with the bottom connection of outer drill rod through outer drill rod connection flange in outer drill rod, is equipped with a plurality of outer drill rod sword rows on the outer drill rod protector inner wall, is equipped with a plurality of inner drill rod sword rows on the inner drill rod in outer drill rod protector, the inner drill rod gear III is connected with inner drill rod, the outer drill rod gear II is connected with outer drill rod. In the utility model, inside and outside drill rod positive and negative mutual stirring cutting, slurry gas same spray a pile can reach the effect of two times, effectively improve the quality and efficiency of pile forming.

Description

Technical Field

[0001] This utility model relates to a pile-forming mechanism, specifically a pile-forming mutual stirring mechanism. Background Technology

[0002] High-pressure jet grouting piles use high-pressure rotating nozzles to inject cement grout into the soil layer and mix it with the soil to form a continuously overlapping cement-reinforced structure. However, in actual use, because the inner and outer drill rods rotate in the same direction, there is still room for improvement in the pile formation effect. Summary of the Invention

[0003] Purpose of the invention: The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a dual forward and reverse stirring mechanism that allows the inner and outer drill rods to stir and cut each other, and the slurry and gas can be sprayed together in one pass to achieve the effect of two passes, effectively improving the quality and efficiency of pile formation.

[0004] Technical Solution: To solve the above-mentioned technical problems, the dual forward and reverse stirring mechanism of this utility model includes a gearbox, a reducer on the gearbox, a motor on the reducer, and an inner and outer combined drill rod inside the gearbox next to the reducer. An inner drill rod gear I is located above the inside of the gearbox, meshing with inner drill rod gear II and inner drill rod gear III. An outer drill rod gear I is located below the inside of the gearbox, meshing with outer drill rod gear II. The inner and outer combined drill rod includes an inner drill rod and an outer drill rod. Two [unclear text - possibly related to the inner drill rod] are located at the top of the inner drill rod. The two diverters are connected by an inner drill rod connecting flange. Each diverter includes a diverter body with a slurry inlet and an air inlet. A drill bit is connected to the bottom of the inner drill rod, and at least one nozzle is provided below the drill bit. A cutter bar is provided on the drill bit next to the nozzle. The nozzle is connected to the slurry pipe. An outer drill rod casing is connected to the bottom of the outer drill rod by an outer drill rod connecting flange. Several outer drill rod cutter bars are provided on the inner wall of the outer drill rod casing. Several inner drill rod cutter bars are provided on the inner drill rod inside the outer drill rod casing. The inner drill rod gear III is connected to the inner drill rod, and the outer drill rod gear II is connected to the outer drill rod.

[0005] Furthermore, the slurry pipe is located inside the inner drill rod, and an air passage is formed between the slurry pipe and the inner drill rod.

[0006] Furthermore, the outer drill pipe cutter bar and the inner drill pipe cutter bar are staggered.

[0007] Furthermore, the inner drill rod rotates clockwise, and the outer drill rod rotates counterclockwise.

[0008] Furthermore, both the inner drill rod gear I and the outer drill rod gear I are connected to the output shaft of the reducer.

[0009] Beneficial effects: Compared with the prior art, the significant advantages of this utility model are: 1. The motor rotates to drive the reducer to the gearbox. The gearbox is divided into upper and lower groups to transmit to the inner and outer drill rods. The outer drill rod is equipped with a protective sleeve. Several outer drill rod cutter rows are provided on the inner wall of the protective sleeve. Several inner drill rod cutter rows are provided on the inner drill rod. When the inner drill rod rotates forward, the outer drill rod rotates in reverse to stir each other. 2. The double diverter is connected to the inner drill rod. A slurry pipe is installed in the middle of the inner drill rod to carry the slurry. Air flows between the slurry pipe and the inner drill rod to form slurry. The air is sprayed at the same time to achieve the filling effect. 3. By mixing the slurry and air together, the pile can be formed in one pass, achieving the effect of two passes, which more effectively improves the quality and efficiency of pile formation. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model. Detailed Implementation

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] like Figure 1As shown, the dual forward and reverse stirring mechanism of this utility model includes a gearbox 1, a reducer 2 mounted on the gearbox 1, a motor 3 mounted on the reducer 2, and an inner and outer combined drill rod inside the gearbox 1 next to the reducer 2. An inner drill rod gear I4 is located at the upper part of the gearbox 1, meshing with inner drill rod gear II5 and inner drill rod gear III6. An outer drill rod gear I7 is located at the lower part of the gearbox 1, meshing with outer drill rod gear II8. Both the inner drill rod gear I4 and the outer drill rod gear I7 are connected to the output shaft of the reducer 2. The inner and outer combined drill rod includes an inner drill rod 9 and an outer drill rod 10. The inner drill rod 9 rotates forward, and the outer drill rod 10 rotates in reverse. Two flow dividers are located at the top of the inner drill rod 9, connected by an inner drill rod connecting flange 11. The dual-flow divider includes a divider body 12, on which a slurry inlet 13 and an air inlet 14 are respectively provided. A drill bit 15 is connected to the bottom of the inner drill rod 9. Two nozzles 16 are provided at the lower part of the drill bit 15. A cutter bar 17 is provided on the drill bit 15 next to the nozzles 16. The nozzles 16 are connected to the slurry pipe 18. The slurry pipe 18 is located inside the inner drill rod 9, and an air passage is formed between the slurry pipe 18 and the inner drill rod 9. An outer drill rod casing 20 is connected to the bottom of the outer drill rod 10 through an outer drill rod connecting flange 19. Several outer drill rod cutter bars 21 are provided on the inner wall of the outer drill rod casing 20. Several inner drill rod cutter bars 22 are provided on the inner drill rod 9 inside the outer drill rod casing 20. The outer drill rod cutter bars 21 and the inner drill rod cutter bars 22 are staggered. The inner drill rod gear III 6 is connected to the inner drill rod 9, and the outer drill rod gear II 8 is connected to the outer drill rod 10.

[0013] This invention utilizes a motor to drive a reducer to a gearbox. The gearbox contains two sets of transmission devices, one for the outer drill rod and one for the inner drill rod. The outer drill rod has a protective casing with several outer drill rod cutter rows on its inner wall. The inner drill rod has several inner drill rod cutter rows. When the inner drill rod rotates forward, the outer drill rod rotates in reverse, causing mutual agitation. Two diverters are connected to the inner drill rod, and a grout pipe is installed in the middle of the inner drill rod to carry grout. Air flows between the grout pipe and the inner drill rod, forming grout. Simultaneous injection of air and grout achieves the desired filling effect. Through mutual agitation, the grout and air are injected together in one pass, achieving the effect of two passes, thus significantly improving the quality and efficiency of pile formation.

[0014] This utility model provides a concept and method. There are many methods and approaches to implement this technical solution. The above description is only a preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model. These improvements and modifications should also be considered as the protection scope of this utility model. All components not explicitly stated in this embodiment can be implemented using existing technology.

Claims

1. A dual forward and reverse stirring mechanism, characterized in that: It includes a gearbox (1), a reducer (2) on the gearbox (1), a motor (3) on the reducer (2), and an inner and outer combined drill rod inside the gearbox (1) next to the reducer (2). An inner drill rod gear I (4) is provided above the inside of the gearbox (1). The inner drill rod gear I (4) and the inner drill rod gear II (5) are meshed together. The inner drill rod gear II (5) and the inner drill rod gear III (6) are meshed together. An outer drill rod gear I (7) is provided below the inside of the gearbox (1). The outer drill rod gear I (7) and the outer drill rod gear II (8) are meshed together. The inner and outer combined drill rod includes an inner drill rod (9) and an outer drill rod (10). Two diverters are provided at the top of the inner drill rod (9). They are connected by an inner drill rod connecting flange (11). The two diverters include a diverter. The main body (12) is provided with a slurry inlet (13) and an air inlet (14) respectively. A drill bit (15) is connected to the bottom of the inner drill rod (9). At least one nozzle (16) is provided at the lower part of the drill bit (15). A cutter bar (17) is provided on the drill bit (15) next to the nozzle (16). The nozzle (16) is connected to the slurry pipe (18). An outer drill rod sleeve (20) is connected to the bottom of the outer drill rod (10) through an outer drill rod connecting flange (19). Several outer drill rod cutter bars (21) are provided on the inner wall of the outer drill rod sleeve (20). Several inner drill rod cutter bars (22) are provided on the inner drill rod (9) inside the outer drill rod sleeve (20). The inner drill rod gear III (6) is connected to the inner drill rod (9). The outer drill rod gear II (8) is connected to the outer drill rod (10).

2. The dual forward and reverse stirring mechanism according to claim 1, characterized in that: The slurry pipe (18) is located inside the inner drill rod (9), and an air passage is formed between the slurry pipe (18) and the inner drill rod (9).

3. The dual forward and reverse stirring mechanism according to claim 1, characterized in that: The outer drill pipe cutter bar (21) and the inner drill pipe cutter bar (22) are staggered.

4. The dual forward and reverse stirring mechanism according to claim 1, characterized in that: The inner drill rod (9) rotates clockwise, and the outer drill rod (10) rotates counterclockwise.

5. The dual forward and reverse stirring mechanism according to claim 1, characterized in that: Both the inner drill rod gear I (4) and the outer drill rod gear I (7) are connected to the output shaft of the reducer (2).

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