Drum-type mud-stone separation device for shield tunneling machine

Abstract

The utility model discloses a drum-type mud-stone separation device for a shield tunneling machine. The drum-type mud-stone separation device comprises a separation drum, a discharge groove, a separation plate, a rotating shaft and a protection drum, the separation cylinder is a cylindrical hollow cylinder body with two open ends, and the plurality of discharge grooves are uniformly distributed and formed in the cylinder wall of the separation cylinder; the protection cylinder is coaxially located in the separation cylinder, a separation gap is formed between the outer wall of the protection cylinder and the inner wall of the separation cylinder, and the multiple separation plates are arranged in the separation gap at intervals and fixedly connected with the outer wall of the protection cylinder and the inner wall of the separation cylinder; the protective barrel is a closed barrel body, one end of the rotating shaft is coaxially and fixedly connected with one end of the protective barrel, and the other end of the rotating shaft is coaxially and fixedly connected to a driving equipment output shaft of the shield tunneling machine. The utility model relates to the technical field of shield engineering, and can solve the problems of high energy consumption, complex structure, large volume and water resource waste of a mud-stone separation device in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of shield engineering, in particular to a drum-type mud and stone separation device for a shield machine. Background Art

[0002] At present, shield tunneling method is often used in underground projects such as subway tunnels. During the construction process of shield machine breaking through the soil and tunneling, it is necessary to transport the excavated muck out of the tunnel to a designated stacking area. Since the muck is composed of soft substances such as soil and hard substances such as stones, in order to improve the conveying efficiency of mud and stone and the subsequent recycling rate of mud and stone, mud and stone separation is usually carried out.

[0003] Chinese invention patent CN109806646A discloses a multi-stage strong-pressure flushing vibration separator for shield muck treatment, which includes a box body with a rectangular structure. The space inside the box body serves as an open feeding bin; the head of the box body is the discharge port, and both the bottom and the tail of the box body are open and are respectively installed with steel meshes; the steel mesh at the bottom of the box body is inclined from the discharge port to the tail to form a certain inclination angle with the horizontal plane; a vibration motor is installed at the top of the feeding bin of the box body, and multiple water pipes are arranged in the upper part of the feeding bin. Multiple high-pressure spray heads facing the inside of the feeding bin are installed on the water pipes, and the water pipes are connected to a high-pressure pump through a main water inlet pipe.

[0004] This mud and stone separator is relatively independent of the shield machine, and separates mud and stone through high-pressure water spraying and vibration. It has high energy consumption, complex structure, large volume. The soil forms mud under the impact of high-pressure water, which is likely to cause certain pollution to the environment and waste water resources. Therefore, it is necessary to provide a drum-type mud and stone separation device for a shield machine, which can solve the problems of high energy consumption, complex structure, large volume and waste of water resources in the existing mud and stone separation device. Summary of the Invention

[0005] The purpose of the utility model is to provide a drum-type mud and stone separation device for a shield machine, which can solve the problems of high energy consumption, complex structure, large volume and waste of water resources in the existing mud and stone separation device.

[0006] The utility model is realized as follows:

[0007] A drum-type mud and stone separation device for a shield machine includes a separation cylinder, a discharge groove, a separation plate, a rotating shaft and a protection cylinder; the separation cylinder is a cylindrical hollow cylinder with both ends open, and several discharge grooves are evenly distributed on the cylinder wall of the separation cylinder; the protection cylinder is coaxially located inside the separation cylinder, and a separation gap is formed between the outer wall of the protection cylinder and the inner wall of the separation cylinder. Multiple separation plates are respectively arranged at intervals in the separation gap and are fixedly connected to the outer wall of the protection cylinder and the inner wall of the separation cylinder; the protection cylinder is a closed cylinder, one end of the rotating shaft is coaxially fixed to one end of the protection cylinder, and the other end of the rotating shaft is coaxially fixed to the output shaft of the driving device of the shield machine.

[0008] The protective cylinder is a variable diameter cylinder with a large diameter in the middle and small diameters at both ends, so that the separation gap has a special-shaped structure with large widths at both ends and a small width in the middle, and the minimum width of the separation gap is larger than the particle size of the stones in the slag.

[0009] A separation plate is connected between the upper outer wall of the protective cylinder and the inner wall of the separation cylinder, and between the lower outer wall of the protective cylinder and the inner wall of the separation cylinder. The separation plate is a triangular structure matching the separation gap, and the separation plate is arranged radially along the separation cylinder.

[0010] The multiple separation plates divide the separation gap into multiple separation gap units in two layers, and the multiple discharge slots are arranged in two layers, so that the multiple separation plates and the multiple discharge slots are staggered, and each separation gap unit includes a discharge slot.

[0011] A guide hole is formed on each of the separation plates, and the connecting rope passes through the guide hole and is connected to the separation plate.

[0012] The discharge chute is a long strip structure, and the width of the discharge chute is smaller than the particle size of the stones in the slag.

[0013] A fixing plate is arranged at one end of the protection tube, one end of the rotating shaft is coaxially fixed to the center of the fixing plate, and a protection sleeve is connected between the rotating shaft and the fixing plate.

[0014] The separation cylinder, separation plate, rotating shaft and protective cylinder are an integrated structure.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The utility model is provided with a rotating shaft, which is used to connect the entire device to the output shaft of the shield machine driving device on the slag transportation path, and utilizes the shield machine driving device to provide power for the rotation of the entire device. There is no need to use independent mud and stone separation equipment, which can reduce energy consumption, reduce the size of the device, and has higher flexibility in use, and can ensure the full separation of mud and stone in the slag.

[0017] 2. The utility model is provided with a separation cylinder and a protective cylinder. The protective cylinder is arranged in the separation cylinder to form a separation gap. One end of the separation gap serves as a slag feeding end, and the other end serves as a stone discharging end. The discharge groove on the separation cylinder serves as a mud discharging end. After the centrifugal force is generated by the rotation under the power of the output shaft, the mud and stones can be quickly separated and discharged through different discharging ends, thereby achieving the effect of mud and stone separation. The separation efficiency is high, no high-pressure water impact is required, and environmental pollution and waste of water resources are avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a three-dimensional view (vertical angle) of the drum-type mud and stone separation device for the shield machine of the present utility model;

[0019] Figure 2 It is a three-dimensional view (horizontal angle) of the drum-type mud and stone separation device for the shield machine of the present utility model.

[0020] In the figure, 1 is the separation cylinder; 2 is the discharge groove; 3 is the separation plate; 4 is the guide hole; 5 is the fixing plate; 6 is the protective sleeve; 7 is the rotating shaft; 8 is the protective cylinder. Specific implementation manner

[0021] The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] Please refer to the attached Figure 1 and the attached Figure 2 , a drum-type mud and stone separation device for a shield machine, including a separation cylinder 1, a discharge groove 2, a separation plate 3, a rotating shaft 7 and a protective cylinder 8; the separation cylinder 1 is a cylindrical hollow cylinder with openings at both ends, and a plurality of discharge grooves 2 are evenly distributed on the cylinder wall of the separation cylinder 1; the protective cylinder 8 is coaxially located inside the separation cylinder 1, and a separation gap is formed between the outer wall of the protective cylinder 8 and the inner wall of the separation cylinder 1, and a plurality of separation plates 3 are respectively arranged at intervals in the separation gap and fixedly connected to the outer wall of the protective cylinder 8 and the inner wall of the separation cylinder 1; the protective cylinder 8 is a closed cylinder, one end of the rotating shaft 7 is coaxially fixedly connected to one end of the protective cylinder 8, and the other end of the rotating shaft 7 is coaxially fixedly connected to the output shaft of the driving device of the shield machine.

[0023] The rotating shaft 7 is used for the reliable connection between the whole device and the output shaft of the driving device of the shield machine and transmits the power of the driving device, and is used to drive the whole device to rotate, so as to form a centrifugal force for separating mud and stones. There is no need to adopt an independent structure, which is beneficial to reducing the volume of the whole device and its energy consumption during operation, and the rotating shaft 7 can be adaptively selected according to the structure of the output shaft of the driving device of the shield machine, and has high matching performance for different shield machines, and good flexibility and versatility in use.

[0024] The separation cylinder 1 is a hollow cylinder with openings at both ends, and the protective cylinder 8 is a closed cylinder, which can prevent the muck from entering the protective cylinder 8 and affecting the mud and stone separation effect. A separation gap is formed between the inner wall of the separation cylinder 1 and the outer wall of the protective cylinder 8, and then under the action of centrifugal force, the stones and soil in the muck are separated in the separation gap. One end opening of the separation cylinder 1 where the rotating shaft 7 is installed serves as the feeding end of the muck, the other end opening of the separation cylinder 1 serves as the discharging end of the separated stones, and the discharge groove 2 on the cylinder body of the separation cylinder 1 serves as the discharging end of the separated soil.

[0025] The separation plate 3 can be used for the fixed installation of the protection cylinder 8 inside the separation cylinder 1. The separation cylinder 1, the separation plate 3, the rotating shaft 7, and the protection cylinder 8 are all made of high-strength steel materials and welded into a whole. They have high structural strength, are not easily deformed or damaged under the friction and impact of stones, and have a long service life.

[0026] Please refer to the appendix Figure 1 and the appendix Figure 2 , the protection cylinder 8 is a variable-diameter cylinder with a larger diameter in the middle and smaller diameters at both ends, making the separation gap an irregular structure with a larger width at both ends and a smaller width in the middle, and the minimum width of the separation gap is greater than the particle size of the stones in the muck.

[0027] The middle part of the separation gap adopts a narrowing structure, which can improve the separation effect of the stones and soil in the muck. The two ends of the separation gap are wider to ensure smooth feeding and discharging.

[0028] Separation plates 3 are connected between the outer wall of the upper part of the protection cylinder 8 and the inner wall of the separation cylinder 1, and between the outer wall of the lower part of the protection cylinder 8 and the inner wall of the separation cylinder 1. The separation plate 3 is a triangular-like structure matching the separation gap and is arranged along the radial direction of the separation cylinder 1.

[0029] The separation plates 3 are evenly distributed in the separation gap and arranged along the radial direction of the separation cylinder 1, which can ensure the connection reliability between the protection cylinder 8 and the separation cylinder 1, effectively bear the impact force of the stones, and ensure the coaxiality of the protection cylinder 8 installed inside the separation cylinder 1.

[0030] Please refer to the appendix Figure 1 and the appendix Figure 2 , the multiple separation plates 3 divide the separation gap into upper and lower layers of multiple separation gap units, and several discharge grooves 2 are arranged in upper and lower layers, so that the multiple separation plates 3 and the several discharge grooves 2 are staggered, and each separation gap unit includes a discharge groove 2.

[0031] The separation gap is divided into multiple separation gap units by the separation plates 3. After the muck enters the separation cylinder 1, it can be evenly distributed into multiple separation gap units through the separation plates 3, which can not only improve the separation efficiency of the stones and soil in the muck, but also avoid the occurrence of blockage when a large amount of muck enters the separation cylinder 1.

[0032] Please refer to the appendix Figure 1 , guide holes 4 are formed on each separation plate 3, and the connecting ropes pass through the guide holes 4 and are connected to the separation plates 3.

[0033] Preferably, the connecting ropes can be made of steel wire ropes, which are used to fixedly connect the separation plate 3 to the rotating end of the driving device. Each connecting rope can be axially connected to the connection points reserved around the output shaft on the rotating end of the driving device, so as to improve the connection reliability and rotational synchronism between the entire device and the rotating end of the driving device, and avoid the entire device falling off the driving device due to the large weight of the muck.

[0034] Preferably, the guide holes 4 can be arranged near the end edge of the separation cylinder 1, which is convenient for the connection of the steel wire ropes and reduces the interference of the steel wire ropes with the muck feeding and separation.

[0035] Please refer to the appendix Figure 1 and the appendix Figure 2 , the discharge trough 2 is of a long strip structure, and the width of the discharge trough 2 is smaller than the particle size of the stones in the muck.

[0036] The separation cylinder 1 is arranged vertically, and the weight and centrifugal force of the muck can be utilized to realize the efficient separation operation of soil and stones. The length direction of the long strip structure of the discharge trough 2 is consistent with the falling path of the muck, which is beneficial to accelerating the speed of the soil discharged from the separation cylinder 1 during the falling process of the muck, and thus improving the separation efficiency of the soil and stones.

[0037] Please refer to the appendix Figure 1 and the appendix Figure 2 , one end of the protective cylinder 8 is provided with a fixing plate 5, one end of the rotating shaft 7 is coaxially fixed at the center of the fixing plate 5, and a protective sleeve 6 is connected between the rotating shaft 7 and the fixing plate 5.

[0038] The fixing plate 5 can be made of high-strength steel plate, and the protective sleeve 6 can be made of high-strength steel sleeve, with high structural strength. The fixing plate 5 and the protective cylinder 8 are welded into a whole. The protective sleeve 6 is used for screwing or bolting to connect the rotating shaft 7 and the fixing plate 5, so as to improve the structural strength at the connection node and ensure the reliable transmission of power.

[0039] The separation cylinder 1, the separation plate 3 and the protective cylinder 8 are of an integral structure, with good integrity of the whole device, small overall function loss during operation, high structural strength, not easy to deform and damage, and long service life.

[0040] Since the separation cylinder 1, the discharge trough 2, the separation plate 3 and the protective cylinder 8 are all symmetric structures, the rotating shaft 7 can be fixedly installed at both ends of the protective cylinder 8 through the fixing plate 5 and the protective sleeve 6, as shown in the appendix Figure 2 , making the installation and use of the whole device more convenient, and it can operate normally in both forward and reverse installations. The rotating shaft 7 can be integrally formed with the protective cylinder 8 or can be detachably connected, which is convenient to replace the rotating shaft 7 with a structure matching different shield machines.

[0041] Please refer to the appendix Figure 1 and the appendix Figure 2, the usage method and working principle of the present utility model are as follows:

[0042] Connect the entire device coaxially to the output shaft of a driving device such as a motor of a shield machine through the other end of the rotating shaft 7. Since there are many driving devices such as motors in the shield machine, the driving devices of the shield machine itself can be used to provide power for the rotation of the entire device, thus eliminating the need for an independent device and facilitating the reduction of the volume of the entire device. The device can be installed on the driving device on the muck transportation path to separate the mud and stones while ensuring the outward transportation of muck, making it more convenient to use.

[0043] Preferably, the rotating shaft 7 and the output shaft can be connected in a form-fitting manner such as a spline to ensure reliable connection and synchronous rotation. At the same time, a steel wire rope can be passed through the guide hole 4 and connected to the rotating end of the driving device to improve the connection reliability between the entire device and the rotating end of the driving device, ensuring synchronous rotation and preventing the entire device from disengaging.

[0044] Preferably, the separation cylinder 1 can be installed vertically. When the driving device is started, the output shaft drives the separation cylinder 1 to rotate synchronously. The muck enters each separation gap unit of the separation gap through the upper end of the separation cylinder 1. Under the action of centrifugal force, the soil in the muck is thrown out through the discharge groove 2. A collection bag can be installed outside the discharge groove 2 to collect the separated soil, facilitating the centralized outward transportation or recycling of the soil.

[0045] The stone particles with a size larger than the width of the discharge groove 2 are retained in the separation gap unit and fall under the action of gravity. The stone particles fall from the lower end of the separation cylinder 1. A conveyor belt or a collection bag can be installed below the separation cylinder 1 to collect the separated stones, facilitating the centralized outward transportation or recycling of the stones.

[0046] The above are only the preferred embodiments of the present utility model and are not intended to limit the protection scope of the present utility model. Therefore, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A drum-type mud and stone separation device for a shield machine, characterized in that: It includes a separation cylinder (1), a discharge groove (2), a separation plate (3), a rotating shaft (7) and a protective cylinder (8); the separation cylinder (1) is a cylindrical hollow cylinder with openings at both ends, and several discharge grooves (2) are evenly distributed on the cylinder wall of the separation cylinder (1); the protective cylinder (8) is coaxially located inside the separation cylinder (1), and a separation gap is formed between the outer wall of the protective cylinder (8) and the inner wall of the separation cylinder (1). Multiple separation plates (3) are respectively arranged at intervals in the separation gap and are fixedly connected to the outer wall of the protective cylinder (8) and the inner wall of the separation cylinder (1); the protective cylinder (8) is a closed cylinder, one end of the rotating shaft (7) is coaxially fixed to one end of the protective cylinder (8), and the other end of the rotating shaft (7) is coaxially fixed to the output shaft of the driving device of the shield machine.

2. The drum-type mud and stone separation device for a shield machine according to claim 1, wherein: The protective cylinder (8) is a variable-diameter cylinder with a large diameter in the middle and small diameters at both ends, so that the separation gap is an irregular structure with a large width at both ends and a small width in the middle, and the minimum width of the separation gap is greater than the particle size of the stones in the muck.

3. The drum-type mud and stone separation device for a shield machine according to claim 2, wherein: Separation plates (3) are connected between the upper outer wall of the protective cylinder (8) and the inner wall of the separation cylinder (1) and between the lower outer wall of the protective cylinder (8) and the inner wall of the separation cylinder (1), and the separation plates (3) are of a triangular-like structure matching the separation gap and are arranged along the radial direction of the separation cylinder (1).

4. The drum-type mud and stone separation device for shield machines according to claim 1 or 3, characterized in that: The multiple separation plates (3) divide the separation gap into upper and lower layers of multiple separation gap units, and several discharge grooves (2) are arranged in upper and lower layers, so that the multiple separation plates (3) and several discharge grooves (2) are arranged in a staggered manner, and each separation gap unit includes a discharge groove (2).

5. The drum-type mud and stone separation device for a shield machine according to claim 4, wherein: A guide hole (4) is formed on each separation plate (3), and a connecting rope passes through the guide hole (4) and is connected to the separation plate (3).

6. The drum-type mud and stone separation device for a shield machine according to claim 4, wherein: The discharge groove (2) is of a strip-shaped structure, and the width of the discharge groove (2) is less than the particle size of the stones in the muck.

7. The drum-type mud and stone separation device for a shield machine according to claim 1, wherein: A fixing plate (5) is provided at one end of the protective cylinder (8), one end of the rotating shaft (7) is coaxially fixed at the center of the fixing plate (5), and a protective sleeve (6) is connected between the rotating shaft (7) and the fixing plate (5).

8. The drum-type mud and stone separation device for a shield machine according to claim 1, characterized in that: The separation cylinder (1), the separation plate (3), the rotating shaft (7) and the protective cylinder (8) are of an integral structure.

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