Quarrying box with flow dividing function and slurry shield tunneling machine

Abstract

The utility model discloses a quarrying box with a flow dividing function and a slurry shield tunneling machine. The quarrying box with the flow dividing function solves the problems that in the prior art, a quarrying box is low in screening efficiency, prone to blockage and free of the flow dividing function. The quarrying box with the flow dividing function comprises a box body, a slurry inlet pipe is arranged at one end of the box body, a slurry discharging pipe and a flow dividing pipe are arranged at the other end of the box body, a first grating is arranged between the slurry inlet pipe and the slurry discharging pipe, and a second grating is arranged between the flow dividing pipe and the first grating and between the flow dividing pipe and the slurry discharging pipe. According to the inclined grating quarrying box with the flow dividing function, quick quarrying can be achieved, the screening efficiency is high, the quarrying and flow dividing functions are integrated, the problems that a quarrying box flow divider in an existing slurry shield is large in occupied space and high in cost are solved, and the design difficulty is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, and in particular to a quarry box for use in slurry shield tunneling. Background Technology

[0002] Slurry-balanced tunnel boring machines (TBMs) rely on slurry pumps and pipes in their slurry circulation system for muck removal during tunneling. Blockages can disrupt the slurry circulation system, leading to abnormal TBM shutdowns or even safety accidents. Therefore, in formations rich in large-diameter gravel and hard rock across the entire tunnel, a quarrying device is often installed before the slurry pump to screen out large-diameter gravel, ensuring the TBM can continue tunneling normally.

[0003] Currently used quarry boxes mainly include grid quarry boxes and agitated quarry boxes, such as the quarry box for a tunnel boring machine disclosed in Chinese Patent Publication No. CN216714389U, and the agitated screening quarry box for a slurry shield tunnel disclosed in Chinese Patent Publication No. CN107227960B. These quarrying devices tend to accumulate slag at the grid, the agitator rods are prone to wear and jamming, the quarrying frequency is low, and the screening effect is unsatisfactory. Furthermore, existing quarry boxes generally only have quarrying and storage functions and cannot achieve the function of diverting slurry. Utility Model Content

[0004] To address the shortcomings in the aforementioned background technology, this utility model proposes a quarry box with diversion function and a slurry shield machine, which solves the problems of low screening efficiency, easy clogging, and lack of diversion function in the existing quarry box.

[0005] The technical solution of this utility model is implemented as follows: a quarry box with diversion function includes a box body, one end of the box body is provided with a slurry inlet pipe, the other end is provided with a slurry outlet pipe and a diversion pipe, a first grid is provided between the slurry inlet pipe and the slurry outlet pipe, and a second grid is provided between the diversion pipe and the first grid and the slurry outlet pipe.

[0006] Preferably, the box body is equipped with a slag discharge door, which is located between the slurry discharge pipe and the first grid and is close to the first grid. When the slag content on the left side of the first grid reaches a certain value, the slag discharge door can be opened to discharge the slag.

[0007] In a further preferred embodiment, the slurry inlet pipe is located at the upper left of the box body, the slurry outlet pipe is located at the lower right of the box body and extends into the box body, one end of the slurry outlet pipe extending into the box body is close to the first grid, and the diversion pipe is located at the upper right of the box body; the first grid divides the box body into a left chamber and a right chamber, the slurry inlet pipe and the slag discharge door are located in the left chamber, and the slurry outlet pipe, the diversion pipe and the second grid are located in the right chamber.

[0008] As a preferred embodiment, the first grid is an inclined straight plate grid, tilted towards the slurry discharge pipe. Compared with conventional vertical grids, it has a certain slope, and when the slurry passes through the grid, the slag and stone carried are screened to the left side and are less likely to accumulate, resulting in higher screening efficiency.

[0009] As another preferred embodiment, the first grid is an inclined arc-shaped grid, tilted towards the slurry discharge pipe. Compared with a conventional vertical grid, it has a certain slope, and when the slurry passes through the grid, the slag and stone it carries are screened to the left side and are less likely to accumulate, resulting in higher screening efficiency; moreover, the arc-shaped structure increases the contact area between the grid and the slag and stone, increasing the amount of slag and stone screened in the same time period, further improving screening efficiency.

[0010] Further preferably, the second grid is a trapezoidal grid with a trapezoidal cross-section, and the grid size of the second grid is smaller than that of the first grid. The first grid screens out larger-sized slag and stone, while the second grid screens out smaller-sized slag and stone to meet the particle size requirements of the flushing pump corresponding to the diversion pipe, thereby achieving smooth diversion.

[0011] Further preferably, the second grid is an arc-shaped grid with an arc-shaped cross-section, and the grid size of the second grid is smaller than that of the first grid. The first grid screens out larger-sized slag and stone, while the second grid screens out smaller-sized slag and stone to meet the particle size requirements of the flushing pump corresponding to the diversion pipe, thereby achieving smooth diversion.

[0012] Further preferably, a flow guide baffle is provided on the side of the second grid facing the first grid. The flow guide baffle prevents the slurry passing through the first grid on the left side from directly entering the diversion pipe, which would cause the diversion pipe to draw in slurry too quickly and contain too much slag. Preferably, the flow guide baffle is vertically or inclinedly connected to the inner wall of the box and the second grid, and is directed towards the slurry discharge pipe.

[0013] A slurry shield tunneling machine includes a quarry box with a diversion function. The quarry box is connected to the slurry discharge system of the shield machine. A slurry inlet pipe is connected to the slurry chamber via a first pipe, a slurry outlet pipe is connected to a slurry discharge pipe equipped with a slurry discharge pump, and a diversion pipe is connected to a flushing pipe equipped with a flushing pump. The flushing pipe leads to the slurry chamber. Slurry in the slurry chamber enters the box body through the first pipe and the slurry inlet pipe, and is discharged through the slurry outlet pipe. It can also be diverted through the diversion pipe. This integrates quarrying and diversion functions, saving costs and reducing layout space.

[0014] The beneficial effects of this utility model are as follows: This utility model's quarry box not only has the ability to screen slag in two stages, but also has a diversion function, realizing the integration of quarrying and diversion. The quarry box of this utility model uses an inclined first grid to screen large-diameter slag. Compared with conventional vertical grids, this grid has a certain slope. When the slurry passes through the grid, the slag carried is screened to the left and is less likely to accumulate, resulting in higher screening efficiency. A second grid is designed at the lower end of the diversion pipe's diversion port. This grid screens out small-diameter slag, ensuring that the screened slurry meets the particle size requirements of the flushing pump, thereby achieving the recycling of the diverted slurry. Furthermore, a baffle is designed on one side of the diversion pipe's diversion port to prevent slurry passing through the first grid on the left from directly entering the diversion pipe, which would cause the diversion pipe to draw in slurry too quickly with an excessive amount of slag, affecting the quality of the diverted slurry.

[0015] This invention, used in slurry shield tunneling, draws slurry from the quarry using a flushing pump, increasing the slurry discharge flow rate and enhancing the slurry's slag-carrying capacity. This allows for better slag screening and reduces the probability of slurry pipe blockage. Simultaneously, the quarry achieves dual functions of quarrying and diversion, eliminating the need for a separate diverter component and significantly reducing costs. Compared to combining the quarry and diverter components, this quarry reduces space and weight, resulting in a simpler layout on the trailer.

[0016] This utility model designs a slanted grid quarry box with diversion function, which can achieve rapid quarrying and high screening efficiency. The quarry diversion function is integrated into one, which solves the problems of large space occupation and high cost of the quarry box diverter in the existing slurry shield tunneling, and greatly reduces the design difficulty. Attached Figure Description

[0017] To more clearly illustrate the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the internal structure of the quarry box of this utility model.

[0019] Figure 2 This is a schematic diagram of the internal side view of the quarry box of this utility model.

[0020] Figure 3 This is a schematic diagram of the external structure of a utility model quarry box.

[0021] Figure 4 This is a schematic diagram of the internal structure of the quarry box of this utility model in Example 3.

[0022] Figure 5This is a schematic diagram of the quarry box of this utility model used in a slurry shield tunneling machine. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this invention, it should be understood that the terms "vertical," "horizontal," "up," "down," "front," "back," "left," "right," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] like Figure 1 As shown in Embodiment 1, a quarry box with a diversion function includes a box body 1. In this embodiment, one end of the box body 1 is provided with a slurry inlet pipe 2, and the other end is provided with a slurry outlet pipe 3 and a diversion pipe 4. The slurry inlet pipe is used for the entry of slurry, the slurry outlet pipe is used for the discharge of slurry from the box body to the outside, and the diversion pipe is used for the diversion of slurry within the box body. This utility model has a diversion function while quarrying, realizing the integration of quarrying and diversion, saving costs and reducing layout space. In this embodiment, a first grid 5 is provided between the slurry inlet pipe 2 and the slurry outlet pipe 3. The first grid is used for the first screening of the slurry entering the box body, screening out large-diameter slag. A second grid 6 is provided between the diversion pipe 4 and the first grid 5 and the slurry outlet pipe 3. The second grid is used to screen out small-diameter slag, preventing small-diameter slag from entering the diversion pipe, improving the quality of the diverted slurry, and facilitating recycling. The quarry box in this embodiment adopts a two-stage screening process to improve the diversion quality. At the same time, the quarry box has a diversion function while quarrying, realizing the integration of quarrying and diversion, saving costs and reducing layout space.

[0027] like Figure 2 As shown, in this embodiment, the box 1 is equipped with a slag discharge door 8, which is located between the slurry discharge pipe 3 and the first grid 5 and close to the first grid 5. When the amount of slag on the left side of the first grid reaches a certain value, the slag discharge door 8 can be opened to discharge the slag, allowing for timely slag cleaning and effectively preventing slag accumulation. The slag discharge door 8 can be located on the side or bottom of the box.

[0028] like Figure 2 As shown in Example 2, a quarry box with a diversion function is further optimized based on Example 1. The slurry inlet pipe 2 is located at the upper left of the box body 1, and the slurry outlet pipe 3 is located at the lower right of the box body 1 and extends into the box body 1. One end of the slurry outlet pipe 3 extends into the box body close to the first grid 5, meaning the outlet pipe extends a certain distance into the box body and is close to the first grid to prevent the accumulation of large slag stones and allow the slag stones after passing through the first grid to smoothly enter the slurry outlet pipe for discharge. The diversion pipe 4 is located at the upper right of the box body 1. The slurry at the upper position contains less slag stone, ensuring that the slurry entering the diversion pipe meets the requirements. The first grid 5 divides the box body into a left chamber and a right chamber. The slurry inlet pipe 2 and the slag discharge door 8 are located in the left chamber, and the slurry outlet pipe 3, the diversion pipe 4, and the second grid 6 are located in the right chamber.

[0029] In this embodiment, the first grid 5 is preferably an inclined arc-shaped grid, tilted towards the slurry discharge pipe 3. Compared with a conventional vertical grid, the inclined arc-shaped grid has a certain slope, and when the slurry passes through the grid, the slag and stone carried are screened to the left side and are less likely to accumulate, resulting in higher screening efficiency. Moreover, the arc-shaped grid adopts an arc-shaped structure, which increases the contact area between the grid and the slag and stone, increases the amount of slag and stone screened in the same time period, and further improves the screening efficiency.

[0030] In this embodiment, the second grid 6 is preferably a trapezoidal grid with a trapezoidal cross-section. Specifically, a trapezoidal grid is designed at the lower end of the diversion port of the diversion pipe. This trapezoidal grid screens small-diameter slag particles to meet the particle size requirements of the diversion flushing pump, thereby achieving a small circulation of the diverted slurry. The grid size of the second grid 6 is smaller than that of the first grid 5. The first grid screens larger-diameter slag particles, which can be discharged through the slag discharge gate 8. The second grid screens smaller-diameter slag particles to meet the particle size requirements of the corresponding flushing pump in the diversion pipe, thus achieving smooth diversion.

[0031] In this embodiment, preferably, a flow guide baffle 7 is provided on the side of the second grid 6 facing the first grid 5. Preferably, the flow guide baffle 7 is vertically or obliquely connected to the inner wall of the box and the second grid 6, and guides the flow towards the slurry discharge pipe 3. The flow guide baffle 7 is placed above the slurry discharge pipe 3 and on the right side of the slurry discharge port, which can both prevent the slurry separated from the first grid from directly entering the diversion pipe, thus preventing the diversion pipe from drawing in too much slurry with an excessive amount of slag.

[0032] like Figure 4 As shown in Embodiment 3, a quarry box with diversion function differs from Embodiment 2 in that the first grid 5 in this embodiment is an inclined straight plate grid, which is inclined towards the slurry discharge pipe 3. Compared with a conventional vertical grid, the inclined grid has a certain slope, and when the slurry passes through the grid, the slag carried is screened to the left side and is less likely to accumulate, resulting in higher screening efficiency.

[0033] In another implementation, the second grid 6 is an arc-shaped grid with an arc-shaped cross-section. This arc-shaped grid also allows for a wraparound filtration design around the lower end of the diversion port of the diversion pipe. The small-diameter slag particles screened by this arc-shaped grid also meet the particle size requirements of the diversion flushing pump, thus achieving a small circulation of the diverted slurry. The grid size of the second grid 6 is smaller than that of the first grid 5. The first grid screens larger-diameter slag particles, which can be discharged through the slag discharge gate 8. The second grid screens smaller-diameter slag particles to meet the particle size requirements of the corresponding flushing pump in the diversion pipe, thus achieving smooth diversion. The slag discharge port 8 can also be designed as a conical surface and placed below the quarry for easy slag discharge.

[0034] like Figure 5 As shown in Embodiment 4, a slurry shield tunneling machine includes a quarry box with a diversion function as described in Embodiment 2. This quarry box is connected to the shield tunneling machine's slurry discharge system. The slurry inlet pipe 2 is connected to the slurry chamber 10 via a first pipe 9. The slurry discharge pipe 3 is connected to a slurry discharge pipe 13 equipped with a slurry discharge pump 12. The diversion pipe 4 is connected to a flushing pipe 15 equipped with a flushing pump 14. The flushing pipe 15 leads to the slurry chamber 10. Slurry in the slurry chamber enters the chamber through the first pipe and the slurry inlet pipe. Part of the slurry, after being screened by the first grid, is discharged through the slurry discharge pipe, and part enters the flushing pipe through the diversion pipe.

[0035] In practice, the quarry box is placed in the slurry discharge pipe before the slurry pump 12. The slurry flows into the quarry box from the inlet pipe, and large-diameter slag is screened by the first screen 5, causing the slag to fall into the left chamber. The slurry and small-diameter slag flow into the right chamber. Part of the slurry flowing into the right chamber is discharged through the slurry discharge pipe 3 and enters the slurry pump. The other part is screened by the trapezoidal screen under the action of the flushing pump and enters the flushing pipe through the diversion pipe. Then it can re-enter the mud and water tank to realize a small circulation of the main unit. By taking slurry from the quarry box by the flushing pump, the slurry discharge flow rate can be increased, the slag carrying capacity of the slurry can be enhanced, and the slag can be screened better. When the slag content filtered by the first screen in the left chamber reaches a certain value, the slag discharge door 8 can be opened to discharge the slag. The guide baffle set at the second screen is placed above the slurry discharge pipe and on the right side of the slurry discharge port. It can not block the slurry from being discharged through the slurry discharge pipe, but can also prevent the slurry separated from the inclined screen from directly entering the diversion pipe. Meanwhile, the quarry box achieves dual functions of quarrying and diversion, reducing the need for a separate diverter component and significantly saving costs. Compared to combining the quarry box and diverter components, this quarry box reduces space and weight, making its arrangement on the trailer much simpler.

[0036] Example 5: A slurry shield tunneling machine includes a quarry box with a diversion function as described in Example 3. This quarry box is connected to the shield tunneling machine's slurry discharge system. The slurry inlet pipe 2 is connected to the slurry chamber 10 via a first pipe 9. The slurry discharge pipe 3 is connected to a slurry discharge pipe 13 equipped with a slurry discharge pump 12. The diversion pipe 4 is connected to a flushing pipe 15 equipped with a flushing pump 14. The flushing pipe 15 leads to the slurry chamber 10. Slurry in the slurry chamber enters the chamber through the first pipe and the slurry inlet pipe. Part of the slurry, after being screened by the first grid, is discharged through the slurry discharge pipe, and part enters the flushing pipe through the diversion pipe.

[0037] In practice, the quarry box is placed in the slurry discharge pipe before the slurry pump 12. The slurry flows into the quarry box from the inlet pipe, and large-diameter slag is screened by the first screen 5, causing the slag to fall into the left chamber. The slurry and small-diameter slag flow into the right chamber. Part of the slurry flowing into the right chamber is discharged through the slurry discharge pipe 3 and enters the slurry pump. The other part is screened by the trapezoidal screen under the action of the flushing pump and enters the flushing pipe through the diversion pipe. Then it can re-enter the mud and water tank to realize a small circulation of the main unit. By taking slurry from the quarry box by the flushing pump, the slurry discharge flow rate can be increased, the slag carrying capacity of the slurry can be enhanced, and the slag can be screened better. When the slag content filtered by the first screen in the left chamber reaches a certain value, the slag discharge door 8 can be opened to discharge the slag. The guide baffle set at the second screen is placed above the slurry discharge pipe and on the right side of the slurry discharge port. It can not block the slurry from being discharged through the slurry discharge pipe, but can also prevent the slurry separated from the inclined screen from directly entering the diversion pipe. Meanwhile, the quarry box achieves dual functions of quarrying and diversion, reducing the need for a separate diverter component and significantly saving costs. Compared to combining the quarry box and diverter components, this quarry box reduces space and weight, making its arrangement on the trailer much simpler.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quarry box with diversion function, comprising a box body (1), characterized in that: The box (1) is provided with a slurry inlet pipe (2) at one end and a slurry outlet pipe (3) and a diversion pipe (4) at the other end. A first grid (5) is provided between the slurry inlet pipe (2) and the slurry outlet pipe (3), and a second grid (6) is provided between the diversion pipe (4) and the first grid (5) and the slurry outlet pipe (3).

2. The quarry box with diversion function according to claim 1, characterized in that: The box (1) is provided with a slag discharge door (8), which is located between the slurry discharge pipe (3) and the first grid (5) and close to the first grid (5).

3. The quarry box with diversion function according to claim 2, characterized in that: The slurry inlet pipe (2) is located on the upper left of the box body (1), the slurry outlet pipe (3) is located on the lower right of the box body (1) and extends into the box body (1). One end of the slurry outlet pipe (3) extends into the box body and is close to the first grid (5). The diversion pipe (4) is located on the upper right of the box body (1). The first grid (5) divides the box body into a left chamber and a right chamber. The slurry inlet pipe (2) and the slag discharge door (8) are located in the left chamber, and the slurry outlet pipe (3), the diversion pipe (4) and the second grid (6) are located in the right chamber.

4. The quarry box with diversion function according to any one of claims 1 to 3, characterized in that: The first grid (5) is a straight grid with an incline, and the first grid (5) is inclined toward the slurry discharge pipe (3).

5. The quarry box with diversion function according to any one of claims 1 to 3, characterized in that: The first grid (5) is an inclined arc-shaped grid, and the first grid (5) is inclined toward the slurry discharge pipe (3).

6. The quarry box with diversion function according to claim 1, characterized in that: The second grid (6) is a trapezoidal grid with a trapezoidal cross-section, and the grid size of the second grid (6) is smaller than that of the first grid (5).

7. The quarry box with diversion function according to claim 1, characterized in that: The second grid (6) is an arc-shaped grid with an arc cross-section, and the grid size of the second grid (6) is smaller than that of the first grid (5).

8. The quarry box with diversion function according to claim 6 or 7, characterized in that: The second grille (6) has a flow guide baffle (7) on the side facing the first grille (5).

9. The quarry box with diversion function according to claim 8, characterized in that: The flow guide baffle (7) is vertically or inclinedly connected to the inner wall of the box and the second grid (6), and guides the flow toward the slurry discharge pipe (3).

10. A slurry shield tunneling machine, characterized in that: The quarry box with diversion function as described in any one of claims 1 to 9 is connected to the slurry discharge system of the tunnel boring machine. The slurry inlet pipe (2) is connected to the mud and water tank (10) through the first pipe (9). The slurry discharge pipe (3) is connected to the slurry discharge pipe (13) with the slurry discharge pump (12). The diversion pipe (4) is connected to the flushing pipe (15) with the flushing pump (14). The flushing pipe (15) leads to the mud and water tank (10).

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