Stirring device for shield tunneling machine cutter ring preparation

Abstract

The utility model relates to a stirring device for shield tunneling machine cutter ring preparation, and belongs to the technical field of shield tunneling machine cutter ring preparation. Comprising a material mixing tank, a water glass conveying pipe, a ceramic micro powder conveying pipe, a molten steel conveying pipe and a control cabinet are fixedly connected to the upper surface of the material mixing tank, a servo motor is fixed to the top of the material mixing tank, and a discharging pipe is fixed to the bottom of the material mixing tank; the ceramic composite stirring shaft extends into the material mixing tank and is positioned in the hollow spiral flow guide cover, inclined fan blades, comb-tooth-shaped paddles and disc-type paddles are mounted on the ceramic composite stirring shaft from top to bottom at intervals, and the servo motor is connected with the control cabinet. According to the utility model, the hollow spiral flow guide cover is arranged, so that the flowing and diffusion of materials can be accelerated, and the materials can achieve a better mixing effect in a shorter time, thereby improving the mixing efficiency. The mixing effect of the materials is further enhanced through a three-layer paddle structure, the uniformity of the materials is ensured, and the quality and performance of the materials are improved.

Description

Technical Field

[0001] This utility model relates to a stirring device used in the preparation of tunnel boring machine cutter rings, and belongs to the field of tunnel boring machine cutter ring preparation technology. Background Technology

[0002] As a core component of underground tunneling, the cutterhead of a tunnel boring machine (TBM) requires high wear resistance and toughness, often enhanced by combining multiple materials. Traditional mixing equipment is mostly suitable for single liquid or solid materials, and has significant limitations when handling multi-phase mixtures such as molten steel (high-temperature liquid), water glass (viscous liquid), and ceramic powder (solid particles). Existing equipment struggles to accommodate differences in material density and flowability, and when the precast structure is fixed, conventional mixing methods easily lead to material stratification and uneven mixing, failing to meet the high-performance requirements of the TBM cutterhead.

[0003] Furthermore, the high hardness and wear of ceramic micropowders severely limit the service life and mixing efficiency of equipment. Therefore, it is necessary to develop a specialized mixing device that adapts to the properties of various materials and is suitable for the fixed working conditions of precast bodies. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a stirring device for the preparation of shield machine cutterheads.

[0005] The technical solution adopted in this utility model is as follows: a stirring device for the preparation of shield machine cutter rings, including a material mixing tank 1. A water glass conveying pipe 5, a ceramic micro powder conveying pipe 6, a molten steel conveying pipe 7 and a control cabinet 2 are fixedly connected to the upper surface of the material mixing tank 1. A servo motor 11 is fixed at the top and a discharge pipe 3 is fixed at the bottom. A ceramic composite stirring shaft 12 is fixedly connected to the output end of the servo motor 11. The ceramic composite stirring shaft 12 extends into the interior of the material mixing tank 1 and is located in a hollow spiral guide shroud 13. The outlet ends of the water glass conveying pipe 5, the ceramic micro powder conveying pipe 6 and the molten steel conveying pipe 7 are located above the hollow spiral guide shroud 13. Inclined fan blades 14, comb-shaped blades 15 and disc blades 16 are installed on the ceramic composite stirring shaft 12 from top to bottom at intervals. The servo motor 11 is connected to the control cabinet 2.

[0006] Preferably, the servo motor 11 is fixed to the top of the material mixing tank 1 by a motor mounting bracket. The motor mounting bracket includes a fixing ring 8, a fixing frame 9, and a limiting bracket 10 fixed to the top of the material mixing tank 1. The fixing ring 8 is fixed to the top of the material mixing tank 1, the servo motor 11 is inserted into the fixing ring 8, two fixing frames 9 are symmetrically fixed on both sides of the fixing ring 8, and the two side frames of the limiting bracket 10 are fixed in the fixing frames 9. The bottom of the top bracket is provided with a slot corresponding to the top of the servo motor 11.

[0007] Preferably, the discharge pipe 3 is provided with an insertion interface, and the sealing baffle 4 closes or opens the discharge pipe 3 by inserting or pulling out the insertion interface.

[0008] Preferably, the inclined fan blade 14, the comb-shaped blade 15, and the disc blade 16 are all detachably installed with the ceramic composite stirring shaft 12.

[0009] Preferably, the tilt angle of the tilted fan blade 14 is 45°.

[0010] The beneficial effects of this utility model are as follows:

[0011] This invention achieves efficient and uniform mixing of various materials such as molten steel and water glass by setting up water glass conveying pipes, ceramic powder conveying pipes, and molten steel conveying pipes on the material mixing tank, overcoming the problem of single-use traditional mixing equipment.

[0012] This invention accelerates material flow and diffusion by incorporating a hollow spiral guide shroud, enabling better mixing in a shorter time and thus improving mixing efficiency. The ceramic composite stirring shaft, equipped with a three-layer stirring paddle assembly, ensures material uniformity and reduces wear caused by the high hardness of the ceramic powder. In the preparation of tunnel boring machine cutterhead materials, the composite stirring function effectively avoids uneven material distribution, improving material quality and performance. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention from one perspective;

[0014] Figure 2 This is a front sectional view of the present invention.

[0015] Figure 3 This is a schematic diagram of the structure of this utility model from below;

[0016] Figure 4 This is a schematic diagram of the overall structure of the present invention from another perspective.

[0017] The attached figures are labeled as follows: 1. Material mixing tank; 2. Control cabinet; 3. Discharge pipe; 4. Sealing baffle; 5. Water glass conveying pipe; 6. Ceramic micro powder conveying pipe; 7. Molten steel conveying pipe; 8. Fixed support ring; 9. Fixed clamp frame; 10. Limiting bracket; 11. Servo motor; 12. Ceramic composite stirring shaft; 13. Hollow spiral guide shroud; 14. Inclined fan blade; 15. Comb-shaped blade; 16. Disc blade. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0019] Example 1: As Figure 1-4 As shown, a mixing device for preparing the cutterhead ring of a tunnel boring machine includes a material mixing tank 1. A water glass conveying pipe 5, a ceramic powder conveying pipe 6, a molten steel conveying pipe 7, and a control cabinet 2 are fixedly connected to the upper surface of the material mixing tank 1. A servo motor 11 is fixed at the top, and a discharge pipe 3 is fixed at the bottom. A ceramic composite stirring shaft 12 is fixedly connected to the output end of the servo motor 11. The ceramic composite stirring shaft 12 extends into the material mixing tank 1 and is located in a hollow spiral guide shroud 13. The outlet ends of the water glass conveying pipe 5, the ceramic powder conveying pipe 6, and the molten steel conveying pipe 7 are located above the hollow spiral guide shroud 13. Inclined fan blades 14, comb-shaped blades 15, and disc blades 16 are installed on the ceramic composite stirring shaft 12 from top to bottom at intervals. The servo motor 11 is connected to the control cabinet 2.

[0020] Furthermore, the servo motor 11 is fixed to the top of the material mixing tank 1 via a motor mounting bracket. The motor mounting bracket includes a fixing ring 8, a fixing frame 9, and a limiting bracket 10, all fixed to the top of the material mixing tank 1. The fixing ring 8 is fixed to the top of the material mixing tank 1, and the servo motor 11 is inserted into the fixing ring 8. Two fixing frames 9 are symmetrically fixed on both sides of the fixing ring 8. The two side frames of the limiting bracket 10 are fixed in the fixing frames 9, and the bottom of the top bracket has a slot corresponding to the top of the servo motor 11. Through the motor mounting bracket, this stable support structure ensures that the servo motor 11 is stably mounted on the top of the material mixing tank 1 during long-term stirring operation, ensuring the stable rotation of the ceramic composite stirring shaft 12 and improving the service life and reliability of the stirring device.

[0021] Furthermore, the discharge pipe 3 is provided with an insertion interface. The sealing baffle 4 can be opened or closed by inserting or pulling out the insertion interface. When stirring is required, the sealing baffle 4 is inserted, but when the stirred material needs to be discharged, the sealing baffle 4 is removed.

[0022] Furthermore, the inclined fan blade 14, the comb-shaped blade 15, and the disc blade 16 are all detachably installed with the ceramic composite stirring shaft 12, and can be individually disassembled and replaced if any one of them is damaged.

[0023] Furthermore, the tilt angle of the tilted fan blade 14 is 45°.

[0024] The working principle of this utility model is as follows: When it is necessary to stir the material, the corresponding material is input into the hollow spiral guide shroud 13 of the material mixing tank 1 through the water glass conveying pipe 5, the ceramic micro powder conveying pipe 6, and the steel liquid conveying pipe 7 respectively. The ceramic composite stirring shaft 12 is controlled to rotate by the servo motor 11. The rotation of the ceramic composite stirring shaft 12 drives the inclined fan blade 14, the comb-shaped blade 15 and the disc blade 16 to rotate, thereby stirring the material entering the material mixing tank 1. By setting a hollow spiral guide shroud 13, the material can be guided to flow along the spiral direction, increasing the mixing path of the material. The top layer is an inclined fan blade 14 at a 45-degree angle, which is used to break up the oxide layer on the surface of the molten steel and generate downward thrust, so that the material is fully mixed in the vertical direction. The middle layer comb-shaped blades 15 can comb and disperse the material, strengthen solid-liquid shear mixing, and prevent the material from agglomerating. The bottom layer is a disc blade 16 with vortex grooves, which can prevent the deposition of ceramic micro powder, further enhance the mixing effect of the material, and ensure the uniformity of the material. When preparing the shield machine cutter ring material, the composite stirring function can effectively avoid the problem of uneven material distribution and improve the quality and performance of the material. After stirring, the ceramic composite stirring shaft 12 is stopped by the servo motor 11, the sealing baffle 4 is removed, and the stirred mixture is discharged from the discharge pipe 3.

[0025] The structure of this invention enables efficient and uniform mixing of materials such as molten steel and water glass, improving the manufacturing quality of the tunnel boring machine cutter ring, extending the service life and maintenance convenience of the mixing shaft, reducing equipment operating costs, ensuring the accuracy of material proportions and mixing effect, and further enhancing the stability and reliability of tunnel boring machine cutter ring manufacturing.

[0026] It should be noted that the components whose detailed structures are not specifically described in this utility model are all known in the prior art and will not be described in detail here.

[0027] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A stirring device for preparing the cutterhead ring of a tunnel boring machine, characterized in that, The material mixing tank (1) is fixedly connected to a water glass conveying pipe (5), a ceramic micro powder conveying pipe (6), a steel liquid conveying pipe (7) and a control cabinet (2) on the upper surface of the material mixing tank (1). A servo motor (11) is fixed at the top and a discharge pipe (3) is fixed at the bottom. A ceramic composite stirring shaft (12) is fixedly connected to the output end of the servo motor (11). The ceramic composite stirring shaft (12) extends into the material mixing tank (1) and is located in the hollow spiral guide shroud (13). The outlet ends of the water glass conveying pipe (5), the ceramic micro powder conveying pipe (6) and the steel liquid conveying pipe (7) are located above the hollow spiral guide shroud (13). Inclined fan blades (14), comb-shaped blades (15) and disc blades (16) are installed on the ceramic composite stirring shaft (12) from top to bottom at intervals. The servo motor (11) is connected to the control cabinet (2).

2. A shield machine cutter ring preparation using stirring device according to claim 1, characterized in that, The servo motor (11) is fixed to the top of the material mixing tank (1) by a motor mounting bracket. The motor mounting bracket includes a fixed support ring (8), a fixed frame (9), and a limiting bracket (10) fixed to the top of the material mixing tank (1). The fixed support ring (8) is fixed to the top of the material mixing tank (1), the servo motor (11) is inserted into the fixed support ring (8), two fixed frames (9) are symmetrically fixed on both sides of the fixed support ring (8), and the two side frames of the limiting bracket (10) are fixed in the fixed frames (9). The bottom of the top bracket is provided with a slot corresponding to the top of the servo motor (11).

3. The shield machine cutter ring preparation using stirring device according to claim 1, characterized in that, The discharge pipe (3) is provided with an insertion interface, and the sealing baffle (4) closes or opens the discharge pipe (3) by inserting or pulling out the insertion interface.

4. The shield machine cutter ring preparation using stirring device according to claim 1, characterized in that, The inclined fan blade (14), comb-shaped blade (15) and disc blade (16) are all detachably installed with the ceramic composite stirring shaft (12).

5. The shield machine cutter ring preparation using stirring device according to claim 1, characterized in that, The tilt angle of the tilted fan blade (14) is 45°.

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