Centrifugal rock slag particle size separation device for small-diameter TBM (tunnel boring machine)
By designing a centrifugal rock slag particle size separation device for small diameter TBM, automatic continuous screening is achieved using multi-stage centrifuge and dust plate, the problems of incomplete screening and slow efficiency in the prior art are solved, labor costs are reduced, and more accurate particle size classification data are provided.
Patent Information
- Application Number
- CN202421697017.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-16
AI Technical Summary
The prior art adopts vibrating screening during the TBM slag production process, which has disadvantages such as incomplete screening, slow efficiency, lack of effective particle size screening, and high labor costs.
A centrifugal rock slag particle size separation device for small diameter TBM is designed, including a multi-stage centrifuge, a dust plate and a buffer cushion layer. Through the continuous automatic screening of the multi-stage centrifuge and the anti-blocking design of the dust plate, automatic continuous screening is achieved and labor costs are reduced.
It realizes more thorough screening of rock slag, improves screening efficiency, reduces labor costs, and provides more accurate rock slag particle size classification data to help understand the hob wear phenomenon of TBM during excavation.
Smart Images
Figure CN222855684U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of rock slag particle size separation, and in particular relates to a centrifugal rock slag particle size separation device for a small-diameter TBM. Background Art
[0002] As a separation device, the centrifuge can be used to classify the particle size of rock debris. By classifying the particle size of small-diameter rock debris, the relationship between the TBM cutterhead and the roller cutter and the rock debris particle size can be observed, so as to have a clearer understanding of the wear phenomenon of the roller cutter during the excavation process of the TBM and make improvements to the roller cutter and cutterhead.
[0003] At present, the vibration screening used in the TBM slag discharge process cannot effectively screen, and is prone to the disadvantages of incomplete screening, slow screening efficiency, lack of effective particle size screening, etc., and the screening process will greatly waste labor costs. Therefore, it is necessary to set up a centrifugal screening device to help screen the slag. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide a centrifugal rock slag particle size separation device for a small diameter TBM in view of the deficiencies in the above-mentioned prior art. The device has a novel and reasonable design and aims to solve the problems of incomplete screening and slow screening efficiency caused by rock slag jamming during screening, while realizing automatic and continuous screening during the screening process, thereby reducing labor costs.
[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a centrifugal rock slag particle size separation device for a small-diameter TBM, characterized in that it includes a multi-stage centrifuge, a centrifuge cover plate arranged on the top of the multi-stage centrifuge and a base arranged at the bottom of the multi-stage centrifuge and having a sloped structure, the multi-stage centrifuge includes a first particle size cylinder wall, a second particle size cylinder wall and a third particle size cylinder wall connected in sequence, the aperture on the first particle size cylinder wall is smaller than the aperture on the second particle size cylinder wall, the aperture on the second particle size cylinder wall is smaller than the aperture on the third particle size cylinder wall, the first particle size cylinder wall and the second particle size cylinder wall are separated by a first electric partition door, the second particle size cylinder wall and the third particle size cylinder wall are separated by a second electric partition door, and a motor is provided at one end of the third particle size cylinder wall away from the second particle size cylinder wall.
[0006] The above-mentioned centrifugal rock slag particle size separation device for a small-diameter TBM is characterized in that: the inner walls of the first particle diameter cylinder wall, the second particle diameter cylinder wall and the third particle diameter cylinder wall are all provided with dust plates, wherein the length of the dust plates in the second particle diameter cylinder wall and the third particle diameter cylinder wall is smaller than the length of the respective particle diameter cylinder walls, the inner diameters of the first particle diameter cylinder wall, the second particle diameter cylinder wall and the third particle diameter cylinder wall are all the same, and the width of the dust plates is smaller than the inner radius of the first particle diameter cylinder wall.
[0007] The above-mentioned centrifugal rock slag particle size separation device for a small-diameter TBM is characterized in that a first rock slag collection box is arranged at the bottom of the first particle size cylinder wall, a second rock slag collection box is arranged at the bottom of the second particle size cylinder wall, and a third rock slag collection box is arranged at the bottom of the third particle size cylinder wall.
[0008] The above-mentioned centrifugal rock slag particle size separation device for a small-diameter TBM is characterized in that the inner wall of the first particle size cylinder wall, the inner wall of the second particle size cylinder wall, the inner wall of the third particle size cylinder wall, the inner wall of the first rock slag collection box, the inner wall of the second rock slag collection box and the inner wall of the third rock slag collection box are all provided with a buffer layer.
[0009] The above-mentioned centrifugal rock slag particle size separation device for a small-diameter TBM is characterized in that the buffer layer is a cotton buffer layer.
[0010] Compared with the prior art, the utility model has the following advantages:
[0011] 1. The dust-raising plate of the utility model is placed in the centrifuge body to prevent the rock slag from getting stuck. The whole device is placed at an angle. The various parts of the multi-stage centrifuge are coordinated with each other to realize continuous automatic screening, which reduces labor costs and makes the screening more thorough. It can solve the problem of particle size classification of rock slag when TBM transports out rock slag, so as to better explain the relationship between rock and machine.
[0012] 2. In the utility model, the inner wall of the first particle size cylinder wall, the inner wall of the second particle size cylinder wall, the inner wall of the third particle size cylinder wall, the inner wall of the first rock slag collection box, the inner wall of the second rock slag collection box and the inner wall of the third rock slag collection box are all provided with a buffer layer, which can reduce the rock slag crushing caused by screening, make the screening more precise, and provide more accurate observation data for the follow-up.
[0013] To sum up, the design of the utility model is novel and reasonable, and aims to solve the problems of incomplete screening and slow screening efficiency caused by rock slag jamming during screening, while realizing automatic continuous screening during the screening process, thereby reducing labor costs and facilitating popularization and use.
[0014] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of the utility model.
[0016] Figure 2 for Figure 1 Left view of .
[0017] Description of reference numerals:
[0018] 1—first particle size cylinder wall; 2—second particle size cylinder wall; 3—third particle size cylinder wall;
[0019] 4—first electric partition door; 5—second electric partition door; 6—motor;
[0020] 7—dust plate; 8—base; 9—centrifuge cover;
[0021] 10—buffer layer; 11—first slag collection box; 12—second slag collection box;
[0022] 13—The third slag collection box. DETAILED DESCRIPTION
[0023] like Figure 1 and Figure 2 As shown, the utility model includes a multi-stage centrifuge, a centrifuge cover plate 9 arranged on the top of the multi-stage centrifuge, and a base 8 arranged at the bottom of the multi-stage centrifuge and having a sloped structure, wherein the multi-stage centrifuge includes a first particle diameter barrel wall 1, a second particle diameter barrel wall 2, and a third particle diameter barrel wall 3 connected in sequence, the aperture on the first particle diameter barrel wall 1 is smaller than the aperture on the second particle diameter barrel wall 2, the aperture on the second particle diameter barrel wall 2 is smaller than the aperture on the third particle diameter barrel wall 3, the first particle diameter barrel wall 1 and the second particle diameter barrel wall 2 are separated by a first electric partition door 4, the second particle diameter barrel wall 2 and the third particle diameter barrel wall 3 are separated by a second electric partition door 5, and a motor 6 is provided at one end of the third particle diameter barrel wall 3 away from the second particle diameter barrel wall 2.
[0024] The height of the base 8 decreases from the first particle diameter cylinder wall 1 to the third particle diameter cylinder wall 3 .
[0025] It should be noted that the dust plate is placed inside the centrifuge body to prevent rock debris from getting stuck. The entire device is placed at an angle, and the various parts of the multi-stage centrifuge coordinate with each other to achieve continuous automatic screening, reducing labor costs and making the screening more thorough. It can solve the problem of classifying the rock debris by particle size when the TBM transports the rock debris out, so as to better explain the rock-machine relationship; the inner wall of the first particle size cylinder wall, the inner wall of the second particle size cylinder wall, the inner wall of the third particle size cylinder wall, the inner wall of the first rock debris collection box, the inner wall of the second rock debris collection box and the inner wall of the third rock debris collection box are all provided with a buffer layer, which can reduce the crushing of the rock debris caused by screening, make the screening more precise, and provide more accurate observation data for the follow-up.
[0026] In this embodiment, the inner walls of the first particle diameter cylinder wall 1, the second particle diameter cylinder wall 2 and the third particle diameter cylinder wall 3 are all provided with dust plates 7, wherein the length of the dust plates 7 in the second particle diameter cylinder wall 2 and the third particle diameter cylinder wall 3 is smaller than the length of each particle diameter cylinder wall so as to avoid the first electric partition door 4 and the second electric partition door 5 and ensure the opening of the first electric partition door 4 and the second electric partition door 5, the inner diameters of the first particle diameter cylinder wall 1, the second particle diameter cylinder wall 2 and the third particle diameter cylinder wall 3 are the same, and the width of the dust plates 7 is smaller than the inner radius of the first particle diameter cylinder wall 1.
[0027] In this embodiment, a first slag collection box 11 is provided at the bottom of the first particle diameter cylinder wall 1, a second slag collection box 12 is provided at the bottom of the second particle diameter cylinder wall 2, and a third slag collection box 13 is provided at the bottom of the third particle diameter cylinder wall 3.
[0028] In this embodiment, the inner wall of the first particle size cylinder wall 1, the inner wall of the second particle size cylinder wall 2, the inner wall of the third particle size cylinder wall 3, the inner wall of the first slag collection box 11, the inner wall of the second slag collection box 12 and the inner wall of the third slag collection box 13 are all provided with a buffer layer 10.
[0029] In this embodiment, the cushion layer 10 is a cotton cushion layer, which reduces the collision between the rock slag and the cylinder wall and prevents the rock slag from being broken after falling into the rock slag collection box.
[0030] When the utility model is used, when a batch of slag enters the first particle diameter barrel wall 1, the motor 6 drives the centrifugal device, and the small diameter slag will fall into the first slag collection box 11. When the screening of the small diameter slag is completed, the first electric partition door 4 is opened, and due to the effect of gravity, the large diameter and medium diameter particle size slag will fall into the second particle diameter barrel wall 2. When all the slag slides into the second particle diameter barrel wall 2, the first electric partition door 4 is closed, and the slag of the second particle diameter barrel wall 2 continues to be screened. At the same time, a batch of new slag enters the first particle diameter barrel wall 1 again to achieve continuous screening. When the medium diameter slag is centrifugally driven to be screened into the second slag collection box 12, the second electric partition door 5 between the second particle diameter barrel wall 2 and the third particle diameter barrel wall 3 will open, and the remaining large diameter particles will enter the third particle diameter barrel wall 3 for screening, and the screening is completed. In order to prevent the slag from getting stuck in the centrifuge, each level of the barrel wall is connected to a dust plate 7 to speed up the screening efficiency.
[0031] The centrifuge cover 9 prevents the slag from rotating upward due to centrifugal force when rotating in the cylinder wall.
[0032] The buffer layer 10 in the centrifuge cylinder wall prevents the rock debris from rotating in the centrifugal cylinder wall and then colliding with the cylinder wall and breaking. The buffer layer 10 in the rock debris collection box prevents the rock debris from falling into the rock debris collection box and then contacting the bottom and breaking. Both are for better ensuring the screening effect.
[0033] The above is only a preferred embodiment of the present invention and does not constitute any limitation to the present invention. Any simple modification, change and equivalent structural change made to the above embodiments according to the technical essence of the present invention shall still fall within the protection scope of the technical solution of the present invention.
Claims
1. A centrifugal rock slag particle size separation device for a small diameter TBM, characterized in that: The invention comprises a multi-stage centrifuge, a centrifuge cover plate (9) arranged on the top of the multi-stage centrifuge, and a base (8) arranged at the bottom of the multi-stage centrifuge and having a sloped structure. The multi-stage centrifuge comprises a first particle diameter barrel wall (1), a second particle diameter barrel wall (2), and a third particle diameter barrel wall (3) connected in sequence. The aperture on the first particle diameter barrel wall (1) is smaller than the aperture on the second particle diameter barrel wall (2), and the aperture on the second particle diameter barrel wall (2) is smaller than the aperture on the third particle diameter barrel wall (3). The first particle diameter barrel wall (1) and the second particle diameter barrel wall (2) are separated by a first electric separation door (4), and the second particle diameter barrel wall (2) and the third particle diameter barrel wall (3) are separated by a second electric separation door (5). A motor (6) is provided at one end of the third particle diameter barrel wall (3) away from the second particle diameter barrel wall (2).
2. A centrifugal slag particle size separation device for a small diameter TBM according to claim 1, characterized in that: The inner walls of the first particle diameter cylinder wall (1), the second particle diameter cylinder wall (2) and the third particle diameter cylinder wall (3) are all provided with dust raising plates (7), wherein the length of the dust raising plates (7) in the second particle diameter cylinder wall (2) and the third particle diameter cylinder wall (3) is smaller than the length of the respective particle diameter cylinder walls, the inner diameters of the first particle diameter cylinder wall (1), the second particle diameter cylinder wall (2) and the third particle diameter cylinder wall (3) are all the same, and the width of the dust raising plates (7) is smaller than the inner radius of the first particle diameter cylinder wall (1).
3. A centrifugal slag particle size separation device for a small diameter TBM according to claim 1, characterized in that: A first slag collection box (11) is arranged at the bottom of the first particle diameter cylinder wall (1), a second slag collection box (12) is arranged at the bottom of the second particle diameter cylinder wall (2), and a third slag collection box (13) is arranged at the bottom of the third particle diameter cylinder wall (3).
4. A centrifugal slag particle size separation device for a small diameter TBM according to claim 3, characterized in that: The inner wall of the first particle diameter cylinder wall (1), the inner wall of the second particle diameter cylinder wall (2), the inner wall of the third particle diameter cylinder wall (3), the inner wall of the first slag collection box (11), the inner wall of the second slag collection box (12) and the inner wall of the third slag collection box (13) are all provided with a buffer cushion layer (10).
5. A centrifugal slag particle size separation device for a small diameter TBM according to claim 4, characterized in that: The cushion layer (10) is a cotton cushion layer.