CN211342843U

CN211342843U - Double-channel side jet valve plate drilling tool

Info

Publication number: CN211342843U
Application number: CN201922320016.1U
Authority: CN
Inventors: 沈耀冲; 张力; 娄荣祥; 叶观宝; 周振; 张振; 李耀良
Original assignee: Shanghai Jingquan Machinery Technology Co ltd
Current assignee: Shanghai Jingquan Machinery Technology Co ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-08-25
Anticipated expiration: 2029-12-20

Abstract

The utility model discloses a binary channels side spout valve plate drilling tool contains circular drilling rod (1), valve plate (2), goes up stirring wing (3), stirring wing (4) and drill bit (5) down, and this drilling tool is equipped with the grout spraying mouth in the top of last stirring wing (3), and the outside of grout spraying mouth is equipped with the valve plate, and when this drilling tool up the counter-rotation lifting, the spout is opened, and the curing agent is followed the spout blowout, and the spun curing agent is stirred by the stirring wing, makes the misce bene between curing agent and the soil. Meanwhile, another air channel is arranged, so that carbon dioxide gas is introduced into the mixture of the curing agent and the soil, the curing time of the curing agent is shortened, and the construction quality is ensured while the construction efficiency is improved.

Description

Double-channel side jet valve plate drilling tool

Technical Field

The utility model relates to a drilling machine, especially drilling tool of drilling machine belongs to underground foundation construction machinery technical field.

Background

The existing multi-shaft underground continuous wall drilling machine, single-shaft drilling machine and other foundation treatment drilling machines have the advantages that generally, only one channel is arranged for conveying cement paste or other curing agents for each drill rod, the nozzle of the cement paste or other curing agents is generally positioned at the bottom of a drilling tool, after the drilling is carried out to a set depth, the drilling machine rotates the drilling tool while upwards lifting, and the curing agents are sprayed, but because the nozzle is positioned at the bottom of the drilling tool, if the up-and-down reciprocating stirring times are not enough, the mixing of the curing agents and soil is not uniform enough, and the construction quality is influenced. But if the up-down reciprocating stirring frequency is ensured, the construction quality is ensured, but the construction efficiency is influenced. In addition, in the drilling process of the single-channel drilling tool, because compressed air is not input, the resistance in the drilling process is large, and the drilling efficiency is influenced. In addition, the curing agent such as cement paste or powder sprayed into the soil requires a long time for curing because of lack of intervention of carbon dioxide gas. Therefore, it is necessary to research and develop a drilling tool which can ensure the stirring times of the curing agent and the soil, ensure the uniform mixing of the curing agent and the soil, and the early consolidation of the curing agent, ensure the construction quality, and improve the construction efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the not enough that exists among the prior art, invented a binary channels side spout valve plate drilling tool, this drilling tool is equipped with the spout in the top of stirring wing, and the outside of spout is equipped with the valve plate, and when the drilling tool up counter-rotating lifted, the spout was opened, and the curing agent was spout from the spout, and the spun curing agent is stirred by the stirring wing, makes the homogeneous mixing between curing agent and the soil. In addition, a nozzle is arranged on the drill blade, so that the curing agent and the soil are uniformly mixed. Meanwhile, another air channel is arranged, so that carbon dioxide is introduced into the mixture of the curing agent and the soil, the curing time of the curing agent is shortened, and the construction quality is ensured while the construction efficiency is improved.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a double-channel side-spraying valve plate drilling tool comprises a circular drill rod 1, a valve plate 2, an upper stirring wing 3 fixedly connected with the drill rod 1 and a drill bit 5, wherein a valve plate frame 13 is arranged on the outer circumference of the drill rod 1, the inner side surface of the valve plate frame 13 is arc-shaped and is concentrically and fixedly connected with the circular drill rod 1, a spraying port 12 is arranged on the outer side surface of the drill rod 1 and positioned above the upper stirring wing 3, the spraying port 12 is positioned between an upper guide groove 131 and a lower guide groove 132 of the valve plate frame 13, the spraying port 12 is communicated with a slurry pipe 11 in the drill rod 1, and the valve plate 2 is arranged in the upper guide groove 131 and the lower guide groove 132; the drill rod 1 is also internally provided with an air pipe 14, the air pipe 14 is communicated with a first outlet 54 at the bottom of the drill bit 5, and the pulp pipe 11 is communicated with a second outlet 55 at the bottom of the drill bit.

In a preferred embodiment, the drill 5 comprises a blade 51 and a cutter tooth 52, the blade 51 is an inclined flat blade, a third outlet 53 is formed at the blade 51, the third outlet 53 is communicated with a fourth outlet 56 at the bottom of the drill, and the fourth outlet 56 is communicated with a second outlet 55 at the bottom of the drill.

As another preferred embodiment, the drill rod 1 is provided with a lower stirring wing 4 fixedly connected with the drill rod 1, and the rotation direction of the lower stirring wing 4 is opposite to that of the upper stirring wing 3.

As another preferred embodiment, the lower stirring wing 4 has the same rotation direction as the blades 51.

As another preferred embodiment, the third outlets 53 are arranged more than 1 along the blade from the center of the drill rod outwards, and the diameter of the third outlets increases gradually.

As another preferred embodiment, the number of the blades 51 is 3, and the blades are uniformly arranged along the outer circumferential surface of the drill rod 1; each vane 51 has a third outlet 53, and the third outlet 53 is located between adjacent cutter teeth 52.

In another preferred embodiment, the cross-section of the upper and lower guide grooves 131, 132 of the valve plate frame 13 is rectangular.

As another preferred embodiment, the valve plate 2 includes a valve plate body 21 and a vertical plate 22, and the vertical plate 22 is perpendicular to the tangential direction of the outer circumferential surface of the valve plate body 21.

As another preferred embodiment, the valve plate 2 comprises a rib plate 23, and the rib plate 23 is arranged perpendicular to the vertical plate 22.

Drawings

FIG. 1 is a schematic diagram of the shape of a dual-channel side-spraying valve plate drilling tool

FIG. 2 is a schematic cross-sectional view of a dual-channel side nozzle valve plate drilling tool

FIG. 3 is a longitudinal section schematic view of a dual-channel side-spraying valve plate drilling tool

Detailed Description

The figure shows a double-channel side spray valve plate drilling tool, which comprises a circular drill rod 1, a valve plate 2, an upper stirring wing 3, a lower stirring wing 4 and a drill bit 5; the upper stirring wing 3 and the lower stirring wing 4 are fixedly connected with the drill rod 1, the rotating directions of the lower stirring wing 4 and the upper stirring wing 3 are opposite, namely when the lower stirring wing 4 rotates leftwards, the upper stirring wing 3 rotates rightwards, and vice versa; a valve plate frame 13 is arranged on the outer circumference of the drill rod 1, and the inner side surface of the valve plate frame 13 is arc-shaped and is concentrically and fixedly connected with the circular drill rod 1; a guniting port 12 is formed in the outer side face of the drill rod 1 and located above the upper stirring wing 3, the guniting port 12 is located between an upper guide groove 131 and a lower guide groove 132 of the valve plate frame 13, and the sections of the upper guide groove 131 and the lower guide groove 132 of the valve plate frame 13 are rectangular; the valve plate 2 comprises a valve plate body 21, a vertical plate 22, a rib plate 23 and a baffle strip 24, wherein the vertical plate 22 is perpendicular to the tangential direction of the outer circumferential surface of the valve plate body 21, the rib plate 23 is perpendicular to the vertical plate 22, and the baffle strip 24 is positioned at the end parts of an upper guide groove 131 and a lower guide groove 132; the valve plate 2 is arranged in the upper guide groove 131 and the lower guide groove 132 of the valve plate frame 13; the guniting port 12 is communicated with a grout pipe 11 in the drill rod 1, and the grout pipe 11 is communicated with a second outlet 55 at the bottom of the drill bit; the drill 5 comprises a blade 51 and cutter teeth 52, the blade 51 is an oblique flat blade, the rotating directions of the lower stirring wing 4 and the blade 51 are the same, a third outlet 53 is formed at the blade 51, the third outlet 53 is communicated with a fourth outlet 56 at the bottom of the drill, and the fourth outlet 56 is communicated with a second outlet 55 at the bottom of the drill; the third outlets 53 are arranged along the blades 51 from the drill rod center to the outside by more than 1, and the drift diameters of the third outlets are gradually increased; the number of the blades 51 is 3, and the blades are uniformly arranged along the outer circumferential surface of the drill rod 1; each blade 51 is provided with a third outlet 53, and the third outlets 53 are positioned between the adjacent cutter teeth 52; in the present invention, the third outlet 53 may be opened in the vane 51, that is, a passage and an outlet are opened in the vane 51, or a pipe may be additionally arranged as the passage and the outlet; also within the drill rod 1 is an air tube 14, the air tube 14 communicating with a first outlet 54 at the bottom of the drill bit 5.

In practical construction and use, the rotation directions of the lower stirring wings 4 and the blades 51 are the same, and the forward rotation direction of the drilling tool is determined according to the rotation directions, when the lower stirring wings 4 and the blades 51 are both rotated rightwards, the drilling tool is rotated rightwards, namely, the drilling tool is rotated forwards, and at the moment, the drilling head cuts soil and fully stirs and mixes the curing agent sprayed out from the bottom of the drilling head and the soil. Because the third outlet 53 is arranged at the blade 51 of the drilling tool, the curing agent is distributed more uniformly in the radial direction of the formed hole; and because the third outlet 53 is arranged along the blade 51 from the center of the drill rod to the outside and the drift diameter of the third outlet is gradually increased, the corresponding quantity of the curing agent can be distributed at a position which is far away from the radial direction of the grout pipe 11, and the curing agent is distributed more uniformly in the radial direction of the formed hole. Because the air pipe 14 is arranged in the drill rod 1 of the drilling tool, compressed air in the air pipe 14 is injected into the mixture of the soil and the curing agent through the first outlet 54 at the bottom of the drill bit 5, on one hand, the resistance of the drilling tool in the drilling process can be reduced, and the drilling efficiency is improved; on the other hand, the carbon dioxide in the compressed air is introduced, so that the consolidation time of the curing agent is shortened, the construction efficiency is improved, the consolidation time is shortened, and the construction quality is ensured. When the drilling tool drills downwards in the forward direction, the blades 51 and the lower stirring wings 4 can stir the mixture of the curing agent and the soil after stirring upwards, at the moment, the curing agent slurry in the stirring mixture can be stirred upwards along the hole forming direction, but because the rotating direction of the upper stirring wings 3 of the drilling tool is opposite to that of the lower stirring wings 4, the mixture of the curing agent and the soil after stirring can be pressed downwards by the upper stirring wings 3, and the curing agent slurry in the mixture is reduced to flow upwards.

Because the drilling tool rotates forwards when drilling, at the moment, the valve plate 2 rotates along the upper guide groove 131 and the lower guide groove 132 under the blocking of the mixture of the curing agent and the soil after stirring, and the grout spraying port 12 is closed when the mixture passes through the grout spraying port 12; when the drilling tool reversely rotates and lifts upwards, due to the blocking of the mixture of the curing agent and the soil after stirring, the reverse rotation of the drilling tool enables the valve plate 2 to rotate along the upper guide groove 131 and the lower guide groove 132, the grout spraying port 12 is switched from a closed state to an open state when passing through the grout spraying port 12, so that the grout is sprayed out from the grout spraying port 12, the sprayed grout is stirred and pressed by the upper stirring wings 3 and is stirred by the lower stirring wings 4, and the grout is uniformly mixed with the soil, so that the stirring effect of the grout can be greatly improved. Because the stirring is not required to be carried out repeatedly up and down, the construction quality is ensured, and the construction efficiency is improved. The blades 51 are uniformly arranged along the outer circumferential surface of the drill rod 1, 3 blades 51 are arranged, each blade 51 is provided with a third outlet 53, the third outlets 53 are positioned between adjacent cutter teeth 52, and due to the fact that the number of the blades 51 and the number of the third outlets 53 are increased, the slurry is more uniformly arranged and stirred.

The drilling tool can also be provided with a regulating valve at the second outlet 55, and the drift diameter of the regulating valve is regulated according to actual requirements so as to regulate the outlet pressure and flow, thereby meeting the flow requirement of the curing agent at the third outlet 53.

The slurry of the present invention may be a cement slurry or may be other liquid or solid setting media.

Claims

1. A double-channel side-spraying valve plate drilling tool comprises a circular drill rod (1), a valve plate (2), an upper stirring wing (3) and a drill bit (5), wherein the upper stirring wing (3) and the drill rod (1) are fixedly connected, the double-channel side-spraying valve plate drilling tool is characterized in that a valve plate frame (13) is arranged on the outer circumference of the drill rod (1), the inner side surface of the valve plate frame (13) is arc-shaped and is concentrically and fixedly connected with the circular drill rod (1), a spraying opening (12) is formed in the outer side surface of the drill rod (1) and located above the upper stirring wing (3), the spraying opening (12) is located between an upper guide groove (131) and a lower guide groove (132) of the valve plate frame (13), the spraying opening (12) is communicated with a slurry pipe (11) in the drill rod (1), and the valve plate (2) is arranged in; an air pipe (14) is further arranged in the drill rod (1), the air pipe (14) is communicated with a first outlet (54) at the bottom of the drill bit (5), and the pulp pipe (11) is communicated with a second outlet (55) at the bottom of the drill bit (5).

2. The dual-channel side nozzle valve plate drilling tool as claimed in claim 1, wherein the drill bit (5) comprises blades (51) and cutter teeth (52), the blades (51) are oblique flat blades, a third outlet (53) is formed in the position of the blades (51), the third outlet (53) is communicated with a fourth outlet (56) in the bottom of the drill bit (5), and the fourth outlet (56) is communicated with a second outlet (55) in the bottom of the drill bit.

3. The dual-channel side nozzle valve plate drilling tool as claimed in claim 1, wherein the drill rod (1) is provided with a lower stirring wing (4) fixedly connected with the drill rod (1), and the rotating directions of the lower stirring wing (4) and the upper stirring wing (3) are opposite.

4. The dual channel side nozzle valve plate drill according to claim 3, characterized in that the lower stirring wing (4) and the blades (51) have the same rotation direction.

5. The dual channel side shooter plate drill tool according to claim 2, characterized in that the third outlets (53) are arranged more than 1 along the blades (51) from the drill rod center outwards and their drift diameters are gradually increasing.

6. The dual channel side shooter valve plate drill tool according to claim 2, characterized in that the number of the blades (51) is 3, and the blades are uniformly arranged along the outer circumferential surface of the drill rod (1); each blade (51) is provided with a third outlet (53), and the third outlets (53) are positioned between the adjacent cutter teeth (52).

7. The dual channel side blow valve plate drill according to claim 1, characterized in that the cross-section of the upper guide groove (131) and the lower guide groove (132) of the valve plate frame (13) is rectangular.

8. The dual channel side shooter valve plate drilling tool according to claim 1, characterized in that the valve plate (2) comprises a valve plate body (21), a vertical plate (22), the vertical plate (22) being perpendicular to the tangential direction of the outer circumferential surface of the valve plate body (21).

9. The dual-channel side nozzle valve plate drilling tool according to claim 1, wherein the valve plate (2) comprises rib plates (23), and the rib plates (23) are arranged perpendicular to the vertical plate (22).