Filtering and stone collecting device of slurry collecting system of slurry shield

Abstract

The embodiment of the utility model discloses a filtering and stone collecting device of a slurry collecting system of a slurry shield, which relates to the field of machinery related to shield tunneling machine construction and comprises a separation tank body, a filter screen, a stone slag conveyor and a slurry outlet, the screen is obliquely arranged on one side in the separation tank body, and a shield slurry discharge pipe is arranged above the top of the screen; the slag stone conveyor is arranged on the other side in the separation tank body, and the starting end of the slag stone conveyor is arranged below the bottom of the screen; the slurry outlet is formed in the side close to the slurry outlet face of the screen and connected with the slurry recycling device. According to the embodiment, the automatic separation treatment efficiency of the slag stones in the slurry can be improved.

Description

Technical Field

[0001] The utility model relates to the field of machinery related to shield machine construction, in particular to a filtering and stone collecting device for a slurry receiving system of a slurry shield machine. Background Technique

[0002] The slurry circulation system of a slurry shield machine is the core system for slag and stone transportation. The slurry circulation system pumps bentonite slurry from the slurry treatment station into the heading face through a slurry feeding pump. There is a certain working pressure in the heading face, which enables the bentonite slurry to embed into the gaps between soil particles to form a "mud film", playing a role in stabilizing the soil layer and improving water properties. The muck cut by the cutter head is separated from the slurry in the excavation chamber, and the slurry is recycled. However, during the continuous excavation of the slurry shield machine, a large amount of slag and stone will be generated. Excessive slag and stone are likely to cause blockage of the grouting pipeline, resulting in a small amount of muck discharge and a slow tunneling speed, seriously affecting the construction progress. Currently, a slag and stone cleaning device is adopted for the slurry shield machine. For example, the patent number "CN110242319B" - a slag and stone rapid cleaning device for a slurry shield machine. This device divides the quarrying box into an inner chamber and an outer chamber through a sieve plate. After the outer chamber is filled with slag and stone, the slurry feeding pipeline is closed, the slurry is pumped away by starting the pump, and the [device] is pulled out by an oil cylinder, so as to separate the slag and stone from the slurry. Its disadvantages are that it cannot work continuously. After the quarrying chamber is filled, the next separation process needs to be carried out. During the execution of the next separation process, the slag and stone in the slurry discharge pipeline cannot be separated; it is necessary to manually open the end cover, increasing the labor intensity of workers. Especially when the equipment is designed too large, workers need to climb to the top of the equipment to open the fastening device, increasing the personal risk of workers. Content of the Utility Model

[0003] An embodiment of the utility model discloses a filtering and stone collecting device for a slurry receiving system of a slurry shield machine, which is used to quickly and automatically separate slag and stone from the slurry in the slurry receiving system of the slurry shield machine, and can carry out slag and stone cleaning work for 24 hours without complex manual operation.

[0004] An embodiment of the utility model provides a filtering and stone collecting device for a slurry receiving system of a slurry shield machine, including:

[0005] A separation tank body, wherein a sieve mesh, a slag and stone conveyor and a slurry discharging structure are arranged inside the separation tank body;

[0006] The sieve mesh is obliquely arranged on one side inside the separation tank body, and a shield slurry discharge pipe is arranged above the top of the sieve mesh;

[0007] The slag and stone conveyor is arranged on the other side inside the separation tank body, and the starting end of the slag and stone conveyor is arranged below the bottom of the sieve mesh;

[0008] The slurry discharging structure is used to discharge the slurry after screening out the slag and stone.

[0009] Further, a first buffer is provided above the screen and near the nozzle of the shield slurry discharge pipe, and the first buffer is used to buffer the slurry mixed with slag and stones discharged from the shield slurry discharge pipe.

[0010] Further, the slag conveyor includes a frame, a driving assembly and a transmission member. The driving assembly is arranged on the frame, and the transmission member is connected to the driving assembly. The driving assembly is used to drive the transmission member to rotate around the frame, and the transmission member carries and transports the slag rolling down from the screen.

[0011] Further, baffles are provided on both sides of the slag conveyor, and the baffles are located at the gap between the transmission member and the separation tank body.

[0012] Further, the transmission member is a chain plate.

[0013] Further, a plurality of convex members are arranged on the surface of the chain plate in a staggered manner.

[0014] Further, a second buffer is provided at the starting end of the slag conveyor and near the bottom of the screen. The second buffer does not move with the transmission member, and the second buffer is used to buffer the slag rolling down from the screen.

[0015] Further, the slag conveyor includes a starting straight section, a lifting section and a terminal straight section. The starting straight section is arranged at the starting end of the slag conveyor, the lifting section is arranged in the middle of the slag conveyor, the terminal straight section is arranged at the end of the slag conveyor. The top of the lifting section is connected to the terminal straight section, the bottom of the lifting section is connected to the starting straight section, the lifting section is inclined, the starting straight section is horizontally arranged or the end of the starting straight section is upturned, and the terminal straight section is horizontally arranged or the end of the terminal straight section is drooping.

[0016] Further, the slurry discharge structure includes a slurry discharge port, and the slurry discharge port is arranged on one side close to the slurry discharge surface of the screen. The slurry discharge port is higher than the starting end of the slag conveyor, and is used to store a certain amount of slurry inside the separation tank body to buffer the moving slag.

[0017] A muddy water shield slurry receiving system includes the filtering and stone collecting device and a slurry recovery device. The slurry recovery device is connected to the slurry discharge port. The slurry recovery device includes a slurry discharge pipe, a slurry tank, a slurry pump and a slurry circulation system. The slurry discharge port is connected to the slurry tank through the slurry discharge pipe. The bottom of the slurry tank is connected to the slurry pump, and the outlet of the slurry pump is connected to the slurry circulation system. A liquid level sensor is arranged inside the slurry tank, and the liquid level sensor is connected to the slurry pump.

[0018] As can be seen from the technical solution, the embodiments provided by the present utility model have the following advantages:

[0019] 1. The present utility model provides a filtering and stone-collecting device for a slurry receiving system of a slurry shield. The screen is inclined and arranged on one side inside the separation tank body, and the slag stone conveyor is inclined and arranged on the other side inside the separation tank body. The bottom of the screen is arranged above the starting end of the slag stone conveyor. By using the principles of gravity and hydrodynamics, when the mixed slurry flows through the inclined screen, the heavier and larger-volume slag stones will slide down along the screen surface and deposit on the lower side, while the slurry fluid will flow out through the other side of the screen, efficiently separating the slag stones from the slurry discharged from the slurry discharge pipe opening of the shield, guiding the slag stones to roll smoothly onto the starting end of the slag stone conveyor, and transporting them to the slag stone recovery device through the slag stone conveyor. The slurry passing through the screen enters the slurry recovery device through the slurry outlet, significantly improving the automatic separation and treatment efficiency of the slag stones in the slurry, enabling rapid treatment of the slag stones continuously for 24 hours, and reducing the labor intensity of workers.

[0020] 2. By arranging a buffer member above the screen and on the starting straight section of the slag stone conveyor, and by arranging the slurry outlet in the middle of the separation tank body, a certain amount of slurry is stored inside the separation tank body, and the slurry plays a buffering role for the slag stones. The above settings effectively prevent large-diameter slag stones from causing serious damage to the separation tank body, the screen, and the slag stone conveyor, and extend the service life of the equipment.

[0021] 3. The slag stone conveyor of the present utility model adopts a chain plate type conveying structure. The chain plates can effectively resist the impact of the slag stones. Further, convex members are arranged on the chain plates, enabling the slag stones to be stable in the gaps between the convex members and move along with the chain plates on the slag stone conveyor.

[0022] 4. By installing retaining bars on both sides of the slag stone conveyor, the retaining bars are located at the gaps and are used to fill the gaps to prevent the slag stones from falling into the gaps. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 It is a schematic structural diagram of a filtering and stone-collecting device for a slurry receiving system of a slurry shield provided in an embodiment of the present utility model;

[0025] Figure 2This is a top view schematic diagram of the chain plate and convex structure on the chain plate conveyor in the filtering and stone collecting device of the slurry receiving system of a muddy water shield in the embodiment of the present invention.

[0026] Figure 3 This is a side view schematic diagram of the chain plate and convex structure on the chain plate conveyor in the filtering and stone collecting device of the slurry receiving system of a muddy water shield in the embodiment of the present invention.

[0027] Reference numerals: 1, slag stone transport vehicle; 2, slag stone conveyor; 3, chain plate; 4, separation tank body; 5, screen; 6, first buffer member; 7, shield slurry discharge pipe; 8, slurry tank; 9, slurry pump; 10, second buffer member; 11, slag discharge port; 12, slurry outlet pipe; 13, convex member; 14, chain plate running direction; 15, slurry outlet. Detailed implementation manners

[0028] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0029] The terms "first" and "second" are only used for descriptive purposes, and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0030] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0031] In the description of this specification, specific features, structures, materials, or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0032] The embodiment of the present invention discloses a filtering and stone collecting device for a slurry receiving system of a muddy water shield.

[0033] Please refer toFigure 1 , an embodiment of a filter and stone collection device for a slurry shield slurry collection system provided in an embodiment of the present utility model includes:

[0034] A separation tank body 4, in which a screen 5, a slag stone conveyor 2 and a slurry outlet 15 are arranged; the screen 5 is inclined and arranged on one side inside the separation tank body 4, and above the top of the screen 5, there is a shield slurry discharge pipe 7; the slag stone conveyor 2 is arranged on the other side inside the separation tank body 4, the starting end of the slag stone conveyor 2 is arranged below the bottom of the screen 5, and the end of the slag stone conveyor 2 is provided with a slag stone recovery device; the slurry outlet 15 is opened on the side close to the slurry outlet surface of the screen 5, and the slurry outlet 15 is connected to a slurry recovery device.

[0035] It can be understood that in specific implementation, the bottom of the screen 5 is arranged above the starting end of the slag stone conveyor 2. The inclined screen 5 utilizes the principles of gravity and hydrodynamics. When the mixed slurry flows through the inclined screen 5, the heavier and larger-volume slag stones will slide along the surface of the screen 5 and deposit on the lower side, while the slurry fluid will flow out through the other side of the screen 5, efficiently separating the slag stones from the slurry discharged from the nozzle of the shield slurry discharge pipe 7, and guiding the slag stones to smoothly roll onto the starting end of the slag stone conveyor 2 and be transported to the slag stone recovery device by the slag stone conveyor 2. The slurry passing through the screen 5 enters the slurry recovery device through the slurry outlet 15.

[0036] In a more specific embodiment, a first buffer member 6 is arranged above the upper part of the screen 5 and close to the nozzle of the shield slurry discharge pipe 7.

[0037] In some other specific implementation manners, the first buffer member 6 is a first buffer plate. The first buffer plate is arranged on one side of the slurry outlet surface of the screen 5 to keep the surface flatness of the screen 5, facilitate the stable rolling of the slag stones on the surface of the screen 5, and is used to buffer the slag stones output from the nozzle of the shield slurry discharge pipe 7 to the screen 5, reduce the impact force and speed of the slag stones discharged from the nozzle of the shield slurry discharge pipe 7 onto the screen 5, thereby protecting the screen 5 from damage, preventing the large-particle-size slag stones in the slurry from damaging the screen 5, and ensuring that materials such as slag stones can flow smoothly and orderly on the screen 5. The material of the buffer plate is rubber, polyurethane, spring steel, etc.

[0038] In some other more specific implementation manners, the first buffer member 6 is a first buffer net. The first buffer net is arranged on one side of the slurry outlet surface of the screen 5, which can not only keep the surface flatness of the screen 5, but also enhance the rigidity and stability of the screen 5, and at the same time ensure the permeability at the position where the first buffer member 6 is arranged on the screen 5. The material of the buffer net is rubber, polyurethane, spring steel, etc.

[0039] In a more specific embodiment, the slag stone conveyor includes a frame, a driving component and a transmission component. The driving component is arranged on the frame, and the transmission component is connected to the driving component.

[0040] In some more specific embodiments, the slag and stone conveyor 2 adopts a chain plate type conveying structure. The slag and stone conveyor 2 includes a frame, a driving assembly and a transmission member. In this embodiment, the transmission member is a chain plate 3. The driving assembly is arranged on the frame and connected to the chain plate 3. The chain plate 3 is sleeved on the frame. The chain plate 3 is used to carry slag and stones, and the driving assembly is used to drive the chain plate 3 to rotate.

[0041] In some more specific embodiments, the slag and stone conveyor 2 is a bucket type conveying structure. The slag and stone conveyor 2 includes a frame, a driving assembly and a transmission member. In this embodiment, the transmission member is a hopper. The driving assembly is arranged on the frame. The two ends of the hopper are rotatably connected to the driving assembly and keep the opening upward on the ascending side and the opening downward on the descending side.

[0042] In a more specific embodiment, retaining bars are arranged on both sides of the slag and stone conveyor 2, and the retaining bars are located at the gap between the transmission member and the separation tank body 4. Specifically, during implementation, the width of both sides of the chain plate 3 or the hopper of the slag and stone conveyor 2 is slightly smaller than the width of the separation tank body 4. There is a gap between both sides of the chain plate 3 or the hopper of the slag and stone conveyor 2 and the separation tank body 4. Retaining bars are installed on both sides of the slag and stone conveyor 2, and the retaining bars are located at the gap for filling the gap to prevent slag and stones from falling into the gap.

[0043] In a more specific embodiment, small holes are arranged on the chain plate 3 or at the bottom of the hopper for filtering the slurry adhering to the slag and stones.

[0044] Please refer to Figure 2 and Figure 3 , in a more specific embodiment, a plurality of staggered convex members 13 are arranged on the surface of the chain plate 3. The plurality of convex members 13 are arranged in rows, and the convex members 13 in adjacent rows are staggered, so that the slag and stones can be stably located at the gaps between the convex members 13, preventing the slag and stones from rolling and causing multiple impacts on the slag and stone conveyor. Therefore, the slag and stones rolling down from the screen 5 are stabilized on the chain plate 3 and further move along with the chain plate 3. In a more specific embodiment, the convex members 13 on the surface of the chain plate 3 are raised horizontal bars for increasing the resistance to the slag and stones to prevent the slag and stones from rolling down during climbing; in some other specific embodiments, the convex members 13 can be rectangular horizontal bars; in some more specific embodiments, the convex members 13 can be horizontal bars bent in the advancing direction of the chain plate 3.

[0045] In a more specific embodiment, the starting end of the slag conveyor 2 is located below the bottom of the screen 5. A second buffer member 10 is provided on the starting end of the slag conveyor 2 and near the bottom of the screen 5. The second buffer member 10 is arranged on the starting end of the slag conveyor 2 and fixed to the frame of the slag conveyor 2. It can be understood that during specific implementation, the starting end of the slag conveyor 2 is used to receive the slag rolling down along the screen 5. The second buffer member 10 does not move with the chain plate 3 and is only fixed to the chain plate 3, and is used to buffer the slag rolling down from the screen 5, reducing the impact force and speed of the slag rolling from the screen 5 to the starting end of the slag conveyor 2, thereby protecting the chain plate 3 at the starting end from damage and preventing the large-particle-size slag in the slurry from damaging the slag conveyor 2.

[0046] In some other specific implementation manners, the second buffer member 10 is inclined and arranged above the chain plate 3, and is used to buffer the slag and guide the slag to fall onto the starting section. In some more specific implementation manners, the second buffer member 10 is a second buffer plate, and the material of the second buffer plate is rubber, polyurethane, spring steel, etc. In some more specific implementation manners, the second buffer member 10 is a second buffer net, and the mesh surface material can increase the friction between the slag and the buffer member, achieving a better speed reduction effect. The material of the second buffer net is rubber, polyurethane, spring steel, etc. In some more specific implementation manners, the second buffer member 10 is closely attached to the bottom of the chain plate 3, enhancing the stability and support force of the chain plate 3.

[0047] In a more specific embodiment, refer to Figure 1 , the slag conveyor 2 is inclined and arranged on the other side inside the separation tank body 4, and adopts a chain plate type conveying structure. The slag conveyor 2 is an inclined Z-shaped chain plate conveyor, including a starting straight section, a lifting section, and a terminal straight section. The lifting section is inclined, the top of the lifting section is connected to the terminal straight section, the terminal straight section is horizontally arranged, providing a sufficient buffer area for the slag rolling down from the screen 5. The bottom of the lifting section is connected to the starting straight section, and the starting straight section is horizontally arranged, which is beneficial for connecting the slag conveyor 2 with the slag recovery equipment.

[0048] In some more specific implementation manners, the end of the starting straight section is upturned, facilitating the filtration of the slurry during transportation. When the mixture falls into the starting straight section, it will move towards the lifting section, and during the movement, the slurry filtration is completed, and the remaining slag is lifted by the lifting section. This setting has a better treatment effect on certain components of the slurry and can also reduce the energy consumption of the starting straight section; of course, in this setting structure, the inclination angle of the starting straight section can be adjusted through its fixing structure to be applicable to slurries with different components;

[0049] In some more specific embodiments, the end of the terminal straight section slopes downward vertically. This structural arrangement is more conducive to the rapid fall of slag and stones into the slag and stone transport vehicle 1, and reduces the height of the fall of slag and stones during the setting of the straight section. In some embodiments, the terminal straight section can be set to be rotatably arranged relative to the lifting section to adjust the discharging direction.

[0050] In some more specific embodiments, the slag and stone conveyor 2 is horizontally arranged on the other side inside the separation tank body 4, adopting a chain plate type or bucket type conveying structure, and only includes a horizontal section. In some more specific embodiments, the starting end of the horizontal section is tilted upwards for facilitating the transportation of slag and stones, and the end of the terminal straight section droops, which is more conducive to the rapid fall of slag and stones into the slag and stone transport vehicle 1.

[0051] In some more specific embodiments, the slag and stone conveyor 2 is vertically arranged on the other side inside the separation tank body 4, adopting a bucket type conveying structure. The slag and stone conveyor 2 includes a starting straight section, a lifting section, and a terminal straight section. The lifting section is vertically arranged, the top of the lifting section is connected to the terminal straight section, the terminal straight section is horizontally arranged, the bottom of the lifting section is connected to the starting straight section, and the starting straight section is horizontally arranged. It can be understood that during specific implementation, the vertical arrangement of the lifting section can reduce the horizontal occupied space of the slag and stone conveyor 2 inside the separation tank body 4, providing more adjustable space for the setting of the length and inclination of the screen 5.

[0052] In a more specific embodiment, the slurry outlet 15 is arranged at the lower part of the separation tank body 4. The slurry outlet 15 is connected to the slurry pump 9 through a slurry pipe 12. The outlet of the slurry pump 9 is connected to the slurry circulation system, and a liquid level sensor is arranged inside the separation tank body. It can be understood that during specific implementation, both the slag and stone conveyor 2 and the screen 5 are higher than the liquid level sensor, and a storage area is formed at the lower part of the separation tank body 4 to store the slurry passing through the screen 5. When the liquid level sensor detects that the slurry liquid level reaches a certain height, the slurry pump 9 is started to recycle the slurry inside the separation tank body 4 into the slurry circulation system.

[0053] In a more specific embodiment, the pulp outlet 15 is arranged in the middle of the separation tank body 4. At this time, the slag stone conveyor 2 is arranged vertically or obliquely. The bottom of the screen 5 is close to the bottom of the separation tank body 4. The pulp outlet 15 is higher than the starting end of the slag stone conveyor 2 and lower than the end of the slag stone conveyor 2 and the upper part of the screen 5. It can be understood that during specific implementation, the pulp outlet 15 is arranged in the middle of the separation tank body 4, so that a certain amount of slurry is stored inside the separation tank body 4. The slurry plays a buffering role for the slag stones, preventing the slag stones from causing serious damage to the separation tank body 4, the screen 5, and the slag stone conveyor 2. In a more specific embodiment, the pulp outlet 15 is connected to a slurry recovery device. The slurry recovery device includes a pulp outlet pipe 12, a slurry tank 8, a slurry pump 9, and a slurry circulation system. The pulp outlet 15 is connected to the slurry tank 8 through the pulp outlet pipe 12. The bottom of the slurry tank 8 is connected to the slurry pump 9. The outlet of the slurry pump 9 is connected to the slurry circulation system. It can be understood that during specific implementation, the slurry in the separation tank body 4 flows into the slurry tank 8 by means of overflow. When the slurry level inside the separation tank body 4 reaches the pulp outlet 15, the slurry automatically flows from the pulp outlet 15 through the pulp outlet pipe 12 into the slurry tank 8. The slurry tank 8 is used to collect the slurry overflowing from the separation tank body 4, increase the storage volume of the slurry, and reduce the operating frequency of the slurry pump 9. In a more specific embodiment, a liquid level sensor is arranged inside the slurry tank 8. The liquid level sensor is connected to the slurry pump 9. When the liquid level sensor recognizes that the slurry liquid level reaches a certain height, the slurry pump 9 is started to recover the slurry in the slurry tank 8 into the slurry circulation system. In a more specific embodiment, a high liquid level sensor and a low liquid level sensor are arranged on the slurry tank 8. The high liquid level sensor is arranged at the upper part of the slurry tank 8, and the low liquid level sensor is arranged at the lower part of the slurry tank 8. It can be understood that during specific implementation, when the liquid level of the slurry in the slurry tank 8 reaches the high liquid level, the slurry pump 9 is started to pump out the slurry in the slurry tank 8 and transport it to the pulp outlet pipeline of the slurry circulation system. When the slurry in the slurry tank 8 reaches the low liquid level, the slurry pump stops working.

[0054] In a more specific embodiment, the slag stone recovery equipment includes a slag stone transport vehicle 1. At this time, the slag stone conveyor 2 is arranged vertically or obliquely. The slag stone transport vehicle 1 is arranged below the terminal straight section. When the slag stones on the slag stone conveyor 2 are transported to the end of the terminal straight section, they fall onto the slag stone transport vehicle 1 to realize the recovery of the filtered slag stones. When the slag stone transport vehicle 1 is full of slag stones, it travels to the ground pretreatment position through the track. The slag stone transport vehicle 1 to be loaded takes the place after the previous slag stone transport vehicle 1 leaves.

[0055] In some more specific embodiments, the slag and stone recovery device includes a slag and stone transport vehicle 1 and a recovery box. The recovery box is arranged inside the separation tank body 4. The end of the slag and stone conveyor 2 is connected to the recovery box, and a channel communicating the recovery box with the external slag and stone transport vehicle 1 is provided on the separation tank body 4. It can be understood that during specific implementation, the slag and stone conveyor 2 is horizontally arranged, and there is no need to transport the slag and stone to a high place. The slag and stone conveyor 2 does not need to do work against the gravity of the slag and stone, improving the slag and stone transport efficiency.

[0056] In a more specific embodiment, when the slag and stone conveyor 2 is horizontally or obliquely arranged, the side of the separation tank body 4 close to the lifting section is closely attached to the lifting section, which is beneficial to having sufficient space below the terminal straight section to place the slag and stone recovery device.

[0057] In a more specific embodiment, both sides of the screen 5 are closely attached to the inner wall of the separation tank.

[0058] In a more specific embodiment, a slag discharge port 11 is provided at the bottom of the separation tank. The slag discharge port 11 is lower than the slag and stone conveyor 2. The slag discharge port 11 is used to discharge the remaining slurry and sediment that cannot be discharged from the slurry outlet 15 when the separation tank body 4 stops working, facilitating the cleaning work of the separation tank body 4.

[0059] Please refer to the figure. The working principle of the filter and stone collection device of a slurry shield slurry collection system in this embodiment is as follows:

[0060] The slurry that needs to separate slag and stone is discharged from the nozzle of the shield slurry discharge pipe 7, separated by the screen 5. The separated slag and stone finally fall onto the chain plate 3 of the slag and stone conveyor 2, are transported by the chain plate 3 to the terminal straight section of the slag and stone conveyor 2, and finally fall into the slag and stone transport vehicle 1. The slag and stone transport vehicle 1 filled with slag and stone travels to the ground pretreatment position through the track. The slag and stone transport vehicle 1 to be loaded makes up the position after the previous slag and stone transport vehicle 1 leaves.

[0061] The slurry is separated from below the screen 5, gathers in the separation tank body 4, and when the liquid level reaches a certain height, it reaches the slurry tank 8 through the slurry discharge pipe 12.

[0062] The slurry tank 8 is provided with a high liquid level sensor and a low liquid level sensor. When the liquid level of the slurry in the slurry tank 8 reaches the high liquid level, the slurry pump 9 is started to pump out the slurry in the slurry tank 8 and transport it to the slurry outlet pipeline of the slurry circulation system.

[0063] When the slurry in the slurry tank 8 reaches the low liquid level, the slurry pump stops working.

[0064] The purpose of the filter and stone collection device of a slurry shield slurry collection system in this embodiment is mainly to separate large-diameter slag and stone. Therefore, it not only realizes rapid and automatic separation, but also avoids damage to the equipment caused by large-diameter slag and stone, and extends the service life of the equipment and subsequent treatment equipment.

[0065] It should be noted that the terms describing the positional relationship in the above examples and drawings are only for illustrative purposes and should not be construed as a limitation on this patent. The above various embodiments of the present utility model are merely examples given to clearly illustrate the present utility model and are not limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. 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 claims of the present utility model.

Claims

1. A filtering and stone-collecting device for the slurry receiving system of a slurry shield tunneling machine, characterized in that, Comprising: A separation tank body (4), inside which a screen (5), a slag stone conveyor (2) and a slurry discharging structure are provided; The screen (5) is inclined and arranged on one side inside the separation tank body (4), and a shield slurry discharge pipe (7) is arranged above the top of the screen (5); The slag stone conveyor (2) is arranged on the other side inside the separation tank body (4), and the starting end of the slag stone conveyor (2) is arranged below the bottom of the screen (5); The slurry discharging structure is used for discharging the slurry after screening out the slag stones.

2. The filtering and stone-collecting device of a slurry shield grout collection system according to claim 1, characterized in that, A first buffer member (6) is arranged above the upper part of the screen (5) and near the nozzle of the shield slurry discharge pipe (7), and the first buffer member (6) is used for buffering the slurry mixed with slag stones discharged from the shield slurry discharge pipe (7).

3. The filtering and stone-collecting device of a slurry shield grout collecting system according to claim 1, characterized in that, The slag stone conveyor (2) includes a frame, a driving assembly and a transmission member. The driving assembly is arranged on the frame, the transmission member is connected with the driving assembly, and the driving assembly is used for driving the transmission member to rotate around the frame, and the transmission member bears and transports the slag stones rolling down from the screen.

4. The filtering and stone collecting device of the slurry receiving system for a slurry shield according to claim 3, characterized in that, Blocking strips are arranged on both sides of the slag stone conveyor (2), and the blocking strips are located at the gap between the transmission member and the separation tank body (4).

5. The filtering and stone collecting device of the slurry collecting system for a slurry shield according to claim 3, wherein, The transmission member is a chain plate (3).

6. The filter and stone collection device of a slurry shield slurry collection system according to claim 5, characterized in that A plurality of convex members (13) are arranged on the surface of the chain plate (3) in a staggered manner.

7. A filtering and stone-collecting device for the slurry receiving system of a slurry shield according to claim 3, characterized in that A second buffer member (10) is arranged on the starting end of the slag stone conveyor (2) and near the bottom of the screen (5). The second buffer member (10) does not move with the transmission member, and the second buffer member (10) is used for buffering the slag stones rolling down from the screen (5).

8. The filtering and stone-collecting device of a slurry shield grout collection system according to claim 3, characterized in that, The slag stone conveyor (2) includes a starting straight section, a lifting section and a terminal straight section. The starting straight section is arranged at the starting end of the slag stone conveyor (2), the lifting section is arranged in the middle of the slag stone conveyor (2), the terminal straight section is arranged at the end of the slag stone conveyor (2), the top of the lifting section is connected with the terminal straight section, the bottom of the lifting section is connected with the starting straight section, the lifting section is inclined, the starting straight section is horizontally arranged or the end of the starting straight section is upturned, and the terminal straight section is horizontally arranged or the end of the terminal straight section is drooped.

9. A filtering and stone collecting device for the slurry collecting system of a slurry shield according to claim 1, characterized in that, The slurry discharging structure includes a slurry discharge port (15), and the slurry discharge port (15) is arranged on one side close to the slurry discharging surface of the screen (5). The slurry discharge port (15) is higher than the starting end of the slag stone conveyor (2) and is used for storing a certain amount of slurry inside the separation tank body (4) to play a buffering role for the moving slag stones.

10. A slurry collection system for a slurry shield tunneling machine, characterized in that, Including the filter and stone collection device and the mud recovery device described in claim 9, the mud recovery device is connected to the slurry outlet (15), and the mud recovery device includes a slurry outlet pipe (12), a mud tank (8), a mud pump (9) and a mud circulation system. The slurry outlet (15) is connected to the mud tank (8) through the slurry outlet pipe (12). The bottom of the mud tank (8) is connected to the mud pump (9). The outlet of the mud pump (9) is connected to the mud circulation system. A liquid level sensor is arranged inside the mud tank (8), and the liquid level sensor is connected to the mud pump (9).

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