Water glass tube anti-blocking device for double-liquid composite micro-disturbance mixing pile machine

Abstract

The utility model relates to a water glass pipe anti-blocking device for a double-liquid composite micro-disturbance mixing pile machine, which comprises a steel ball limiting piece and a steel ball, the top end of the steel ball limiting piece is fixed at the outlet end of a water glass spray pipe, and gaps for water glass to flow out are arranged on the periphery of the steel ball limiting piece; and the outlet end of the water glass spray pipe is vertically downward. The steel ball limiting piece has the advantages that the steel ball limiting piece is installed at the outlet end of the water glass spraying pipe, the steel ball moves between the steel ball limiting piece and the outlet end of the water glass spraying pipe, the steel ball is pressed downwards to enable water glass to flow out of the bottom end of the water glass spraying pipe when water glass grouting is conducted, the steel ball ascends along with buoyancy when grouting is not conducted, and automatic sealing of the water glass spraying pipe is achieved. The composite slurry in the pile hole is prevented from entering the water glass spray pipe to block the spray pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of mixing pile machines, in particular to a water glass pipe anti-blocking device for a double-fluid composite micro-disturbance mixing pile machine. Background Art

[0002] With the rapid development of the national economy, the construction of urban subways has advanced by leaps and bounds. The subway lines in large and medium-sized cities crisscross, which not only alleviates the urban traffic pressure but also brings a series of construction safety problems. The most prominent one is the problem of the liquefied disturbed soil during the foundation soil reinforcement construction near the subway tunnel affecting the subway operation safety. For this problem, the double-fluid composite micro-disturbance mixing pile machine adds a water glass grouting channel on the basis of the triaxial mixing pile machine, which can inject water glass into the cement soil in time, enabling the cement soil after construction to quickly reach the strength of the original soil and reducing the impact of construction on the environment.

[0003] However, in the actual construction process of the existing double-fluid composite micro-disturbance mixing pile machine, the problem of the composite slurry blocking the water glass spray pipe is likely to occur. Therefore, a new water glass spray pipe anti-blocking device is urgently needed to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a water glass pipe anti-blocking device for a double-fluid composite micro-disturbance mixing pile machine.

[0005] This water glass pipe anti-blocking device for a double-fluid composite micro-disturbance mixing pile machine includes: a steel ball limiting member and a steel ball. The top end of the steel ball limiting member is fixed at the outlet end of the water glass spray pipe, and there are gaps around the steel ball limiting member for the water glass to flow out; the outlet end of the water glass spray pipe is vertically downward;

[0006] The steel ball moves between the steel ball limiting member and the outlet end of the water glass spray pipe. When the water glass spray pipe grouts, the steel ball is pressed down by the water glass pressure, and there is a gap between the steel ball and the outlet end of the water glass spray pipe.

[0007] Preferably, the diameter of the steel ball is larger than the inner diameter of the water glass spray pipe and smaller than the outer diameter of the water glass spray pipe.

[0008] Preferably, the steel ball is hollow, and the overall density of the steel ball is less than that of the composite slurry in the pile hole.

[0009] Preferably, the steel ball limiting member includes at least three limiting rods. The bottom ends of the three limiting rods converge and are fixed at one point, and the top ends are fixed at the outlet end of the water glass spray pipe.

[0010] Preferably, the top ends of the limiting rods are connected to the bottom surface of the outlet end of the water glass spray pipe, and the bottom end of the steel ball limiting member is higher than the top end of the mixing pile machine cutter.

[0011] The beneficial effects of the utility model are:

[0012] 1) The utility model is installed at the outlet end of the sodium silicate spray pipe. The steel ball moves between the steel ball position-limiting member and the outlet end of the sodium silicate spray pipe. When injecting sodium silicate, the steel ball is pressed down so that the sodium silicate can flow out from the bottom end of the sodium silicate spray pipe. When not injecting, the steel ball rises with the buoyancy force, realizing the automatic closing of the sodium silicate spray pipe and preventing the composite slurry in the pile hole from entering the sodium silicate spray pipe and blocking the spray pipe.

[0013] 2) The steel ball position-limiting member of the utility model includes at least three position-limiting rods. The position-limiting installation of the steel ball can be realized by welding the position-limiting rods. The structure is simple and the application is convenient, which is convenient for transforming the sodium silicate pipe of the existing mixing pile machine. And the bottom ends of the three position-limiting rods converge at one point, which is convenient for the sodium silicate spray pipe to extend downward during construction.

[0014] 3) When injecting sodium silicate with the utility model, the steel ball is pressed down. After the sodium silicate rushes out from the bottom end of the sodium silicate spray pipe, it impacts the top surface of the steel ball and disperses around. Therefore, the steel ball plays a certain positive role in the uniform distribution of the sodium silicate. Description of the Drawings

[0015] Figure 1 It is a schematic diagram of a double-fluid composite micro-disturbance mixing pile machine;

[0016] Figure 2 Schematic diagram of the anti-blocking device for the sodium silicate pipe.

[0017] Description of the reference numerals: sodium silicate spray pipe 1, steel ball position-limiting member 2, steel ball 3. Detailed Embodiment

[0018] The following further describes the utility model in conjunction with the embodiments. The description of the following embodiments is only used to help understand the utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, several modifications can still be made to the utility model, and these improvements and modifications also fall within the protection scope of the claims of the utility model.

[0019] As an embodiment, as Figure 1 and Figure 2 shown, this anti-blocking device for the sodium silicate pipe of a double-fluid composite micro-disturbance mixing pile machine includes: a steel ball position-limiting member 2 and a steel ball 3. The outlet end of the sodium silicate spray pipe 1 is vertically downward. The top end of the steel ball position-limiting member 2 is fixed at the outlet end of the sodium silicate spray pipe 1, and gaps for the sodium silicate to flow out are provided around the steel ball position-limiting member 2.

[0020] In this embodiment, the steel ball limiting member 2 includes three limiting rods. The bottom ends of the three limiting rods converge and are fixed at one point, and the top ends are fixed at the outlet end of the sodium silicate spray pipe 1. The top ends of the limiting rods are connected to the bottom surface of the outlet end of the sodium silicate spray pipe 1 without protruding from the outer wall of the sodium silicate spray pipe 1, and the bottom end of the steel ball limiting member 2 is higher than the top end of the cutter of the mixing pile machine.

[0021] The steel ball 3 moves between the steel ball limiting member 2 and the outlet end of the sodium silicate spray pipe 1. The diameter of the steel ball 3 is larger than the inner diameter of the sodium silicate spray pipe 1 and smaller than the outer diameter of the sodium silicate spray pipe 1. Therefore, the steel ball 3 will not slide out of the steel ball limiting member 2 and will not completely enter the sodium silicate spray pipe 1.

[0022] The steel ball 3 is hollow, and the overall density of the steel ball is less than that of the composite slurry in the pile hole, so that the steel ball 3 floats up when there is no grouting in the sodium silicate spray pipe 1, naturally blocking the outlet end of the sodium silicate spray pipe 1 and preventing the composite slurry from entering the sodium silicate spray pipe 1. When the sodium silicate spray pipe 1 grouts, the steel ball 3 is pressed down by the sodium silicate pressure, and there is a gap between the steel ball 3 and the outlet end of the sodium silicate spray pipe 1. The sodium silicate flows out from the above gap, and the sodium silicate rushes around along the surface of the steel ball 3, with a certain dispersion effect, which helps to improve the uniformity of the sodium silicate in the composite slurry, enables the cement soil after construction to quickly reach the strength of the original soil, and reduces the impact of construction on the environment.

Claims

1. An anti-blocking device for the sodium silicate pipe of a double-fluid composite micro-perturbation mixing pile machine, characterized in that, Including: A steel ball limiter and a steel ball. The top end of the steel ball limiter is fixed at the outlet end of the sodium silicate spray pipe. There are gaps around the steel ball limiter for the sodium silicate to flow out. The outlet end of the sodium silicate spray pipe is vertically downward. The steel ball moves between the steel ball limiter and the outlet end of the sodium silicate spray pipe. When the sodium silicate spray pipe grouts, the steel ball is pressed down by the pressure of the sodium silicate, and there is a gap between the steel ball and the outlet end of the sodium silicate spray pipe.

2. The anti-blocking device for the sodium silicate pipe of the double-fluid composite micro-perturbation mixing pile machine according to claim 1, characterized in that, The diameter of the steel ball is larger than the inner diameter of the sodium silicate spray pipe and smaller than the outer diameter of the sodium silicate spray pipe.

3. The anti-blocking device for the water glass pipe of the double-fluid composite micro-perturbation mixing pile machine according to claim 1, characterized in that, The steel ball is hollow, and the overall density of the steel ball is less than that of the composite slurry in the pile hole.

4. The water glass pipe anti-blocking device of the double-fluid composite micro-perturbation mixing pile machine according to claim 1, characterized in that, The steel ball limiter includes at least three limiting rods. The bottom ends of the three limiting rods converge and are fixed at one point, and the top ends are fixed at the outlet end of the sodium silicate spray pipe.

5. The anti-blocking device for the sodium silicate pipe of the double-fluid composite micro-perturbation mixing pile machine according to claim 1, characterized in that, The top ends of the limiting rods are connected to the bottom surface of the outlet end of the sodium silicate spray pipe, and the bottom end of the steel ball limiter is higher than the top end of the cutter of the mixing pile machine.

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