Superimposed slurry separation system

Abstract

The utility model belongs to the technical field of sludge water separation, provide superposed sludge water separation system, including the bearing frame body, the inside of bearing frame body is equipped with up and down distribution screen cloth one and screen cloth two, the slurry is transported to screen cloth two, screen cloth one and screen cloth two are equipped with the power component of driving slurry vibration, the inside of bearing frame body is close to the bottom and is equipped with the storage box one, storage box two and storage box three of mutually side by side and top opening, the inside bottom of bearing frame body is equipped with sand removal pump and mud removal pump respectively, the import of sand removal pump is connected with storage box one pipeline, the import of mud removal pump is connected with storage box two pipeline, still including sand removal cyclone and mud removal cyclone, sand removal cyclone and mud removal cyclone are installed on the backplate of bearing frame body and above screen cloth one, the utility model discloses through the multistage separation device of design, can improve the separation degree to slurry, improve the processing effect.

Description

Technical Field

[0001] This utility model belongs to the field of mud-water separation technology, specifically a superimposed mud-water separation system. Background Technology

[0002] A tunnel boring machine (TBM) is a specialized engineering machine used for tunnel excavation. It integrates mechanical, electrical, hydraulic, sensing, and information technologies and is widely used in tunnel construction in urban subways, railways, highways, water conservancy, and mining.

[0003] During the tunnel boring machine's advance, mud is injected to balance the water and soil pressure at the excavation face and maintain its stability. The cut soil is mixed with the mud to form mud slurry, which needs to be transported to the surface for treatment via pipelines.

[0004] After the mud is transported out, it is usually processed by screening. However, traditional vibrating screens are difficult to handle complex particle size distributions, resulting in insufficient classification accuracy and affecting the processing effect. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a superimposed mud-water separation system to solve the problem of insufficient grading accuracy in the prior art during the mud screening process.

[0006] A superimposed mud-water separation system includes a support frame. Inside the support frame, there are two screens, one vertically distributed and the other vertically distributed. Mud is transported to screen two. Power components for driving mud vibration are installed on screen one and screen two. Inside the support frame, near the bottom, there are storage boxes one, two, and three arranged side by side with open tops. A sand removal pump and a mud removal pump are respectively installed at the bottom of the support frame. The inlet of the sand removal pump is connected to the pipeline of storage box one, and the inlet of the mud removal pump is connected to the pipeline of storage box two.

[0007] It also includes a desanding hydrocyclone and a desludge hydrocyclone, which are installed on the back plate of the support frame and above the screen. The outlet of the desanding pump is connected to the inlet pipe of the desanding hydrocyclone, and the outlet of the desludge pump is connected to the inlet pipe of the desludge hydrocyclone.

[0008] Preferably, the first screen and the second screen are inclinedly distributed within the support frame, with the first screen inclined downward toward the back plate of the support frame and the second screen inclined upward toward the back plate of the support frame.

[0009] Preferably, a baffle is provided below the second screen, the baffle is fixedly connected inside the support frame, and the outlet of the baffle extends to the top of the storage box. The front ends of the first screen and the second screen are provided with downwardly inclined slag guide plates.

[0010] Preferably, the back plate of the support frame is provided with a mud conveying pipe, which extends above the second screen, and one side of the storage box third is provided with a return pipe extending to the outside.

[0011] Preferably, a vertical screen is provided on the back plate of the support frame, the vertical screen is located above the first screen, and a guide plate is provided on the side of the vertical screen away from the first screen. The guide plate is fixed on the outer wall of the back plate of the support frame, and the other end of the guide plate extends above the second screen.

[0012] Preferably, the power assembly includes a first vibration motor, a second vibration motor, and a vibrator. The first vibration motor and the second vibration motor are installed in the support frame and above the first screen, and the vibrator is also installed in the support frame.

[0013] Preferably, the angle between the first vibration motor and the second vibration motor after installation is between 60 and 80 degrees.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This utility model has a support frame with a screen 1 and a screen 2 inside. When the mud is transported to the screen 2, the power component drives the screen 2 to vibrate and separate the material. The screened material enters the storage box 1 below through the baffle and is pumped out by the sand removal pump into the sand removal hydrocyclone. After secondary separation, the slag separated by the underflow of the sand removal hydrocyclone is discharged onto the screen 1 and discharged. The treated mud overflowing from the sand removal hydrocyclone enters the storage box 2 through the pipeline.

[0016] The mud pump draws mud into a desliming hydrocyclone for three-stage separation. The clean mud overflowing from the hydrocyclone is discharged through a pipe into storage box three in the mud tank below. The slag discharged from the underflow of the hydrocyclone is again discharged onto screen one and vibrated out. This multiple screening and separation process improves the mud separation effect and ensures optimal treatment. Furthermore, the processed material, after entering storage box three, can be pumped back into the tunnel boring machine for recycling. This achieves water and bentonite savings, making it more environmentally friendly. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the mud separation system of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of screen one and screen two components inside the support frame of this utility model;

[0019] Figure 3 This is a schematic diagram of the storage box and sand removal pump components of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the screen one, screen two, storage box one, and storage box two components of this utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the vibration motor one and vibration motor two components of this utility model.

[0022] In the picture:

[0023] 1. Support frame; 2. Screen 1; 3. Screen 2; 4. Storage box 1; 5. Storage box 2; 6. Storage box 3; 7. Sand removal pump; 8. Mud removal pump; 9. Sand removal hydrocyclone; 10. Mud removal hydrocyclone; 11. Baffle; 12. Material guide plate; 13. Mud conveying pipe; 14. Return pipe; 15. Vertical screen; 16. Guide plate; 17. Vibrating motor 1; 18. Vibrating motor 2; 19. Vibrator. Detailed Implementation

[0024] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0025] As attached Figure 1 To be continued Figure 5 As shown:

[0026] Example 1: This utility model provides a superimposed mud-water separation system, including a support frame 1. The support frame 1 has two screens, a first screen 2 and a second screen 3, which are arranged vertically inside. The mud is transported to the second screen 3. The first screen 2 and the second screen 3 are equipped with a power component to drive the mud vibration. The support frame 1 has storage boxes 4, 5 and 6 arranged side by side with open tops near the bottom. The support frame 1 has a sand removal pump 7 and a mud removal pump 8 respectively installed at the bottom of the support frame 1. The inlet of the sand removal pump 7 is connected to the storage box 4 by a pipeline, and the inlet of the mud removal pump 8 is connected to the storage box 5 by a pipeline.

[0027] It also includes a sand-removing hydrocyclone 9 and a mud-removing hydrocyclone 10. The sand-removing hydrocyclone 9 and the mud-removing hydrocyclone 10 are installed on the back plate of the support frame 1 and above the screen 2. The outlet of the sand-removing pump 7 is connected to the inlet pipe of the sand-removing hydrocyclone 9, and the outlet of the mud-removing pump 8 is connected to the inlet pipe of the mud-removing hydrocyclone 10.

[0028] It should be noted that the support frame 1 has a screen 2 and a screen 3 inside. When the mud is transported to the screen 3, the power unit drives the screen 3 to vibrate and separate the material. The screened material enters the storage box 4 below through the baffle 11 and is pumped out by the sand pump 7 into the sand hydrocyclone 9. After secondary separation, the slag separated by the underflow of the sand hydrocyclone 9 is discharged onto the screen 2 and discharged. The treated mud overflowing from the sand hydrocyclone 9 enters the storage box 5 through the pipeline.

[0029] The mud pump 8 draws mud into the desilting hydrocyclone 10 for three-stage separation. The clean mud overflowing from the desilting hydrocyclone 10 is discharged through a pipe into the storage box 6 of the mud tank below. The slag discharged from the underflow of the desilting hydrocyclone 10 is again discharged onto the screen 2 and vibrated out. Thus, the conveyed mud can be screened and separated multiple times using different methods, improving the separation effect and ensuring the treatment effect. Furthermore, the processed material, after entering the storage box 6, can be pumped back into the tunnel boring machine for recycling. This achieves water and bentonite material savings, making it more environmentally friendly.

[0030] In this embodiment, screen 1 2 and screen 2 3 are inclinedly distributed inside the support frame 1. Screen 1 2 is inclined downward toward the back plate of the support frame 1, and screen 2 3 is inclined upward toward the back plate of the support frame 1.

[0031] It should be noted that the upper screen 12 is designed with a positive angle so that the material separated by the desanding hydrocyclone 9 and the desliming hydrocyclone 10 can be better vibrated and screened out after being discharged onto the screen 12. The lower screen 23 is designed with a negative angle so that after the slurry is transported onto the screen 23, the slurry will gradually rise during vibration and be subjected to a backward force, thereby improving the vibration separation effect on the screen 23.

[0032] In this embodiment, a baffle 11 is provided below the second screen 3. The baffle 11 is fixedly connected inside the support frame 1, and the outlet of the baffle 11 extends to the top of the storage box 4. The front ends of the first screen 2 and the second screen 3 are provided with downwardly inclined material guide plates.

[0033] It should be noted that by setting a baffle 11 below the second screen 3, and extending the outlet of the baffle 11 above the first storage box 4, the material screened from the second screen 3 will slide down on the baffle 11, preventing it from falling into the second storage box 5 and the third storage box 6, so that it all enters the first storage box 4.

[0034] By installing material guide plates at the front ends of screen 1 (2) and screen 2 (3), the waste material after vibrating screening can fall to a designated location for better collection.

[0035] In this embodiment, a mud conveying pipe 13 is provided on the back plate of the support frame 1, and the mud conveying pipe 13 extends above the screen 2 3. A return pipe 14 extending to the outside is provided on one side of the storage box 3 6.

[0036] It should be noted that one end of the mud conveying pipe 13 is connected to the tunnel boring machine (TBM). During the tunneling process, the generated mud and water are conveyed through the mud conveying pipe 13 to the screen 2 3 for vibratory screening. A return pipe 14 is installed on the storage box 3 6 to pump the separated material back into the tunnel boring machine for recycling. This achieves water and bentonite material savings, making it more environmentally friendly.

[0037] In this embodiment, a vertical screen 15 is provided on the back plate of the support frame 1. The vertical screen 15 is located above the screen 2. A guide plate 16 is provided on the side of the vertical screen 15 away from the screen 2. The guide plate 16 is fixed on the outer wall of the back plate of the support frame 1, and the other end of the guide plate 16 extends above the screen 3.

[0038] It should be noted that by setting a vertical screen 15 on the support frame 1, when the separated mud is transported to the screen 1 2, if the mud cannot be screened through quickly, the mud at the tail end of the screen may overflow the upper enclosure. The vertical screen 15 is designed to transport a large part of the mud from the rear to the screen 2 3 through the guide plate 16, thereby avoiding the situation of overflowing out of the support frame 1.

[0039] In this embodiment, the power assembly includes a first vibration motor 17, a second vibration motor 18, and a vibrator 19. The first vibration motor 17 and the second vibration motor 18 are installed inside the support frame 1 and above the screen 2. The vibrator 19 is also installed inside the support frame 1.

[0040] It should be noted that the vibrator 19 is an eccentric block vibrator 19, whose rotating shaft is connected to the first vibrating motor 17 and the second vibrating motor 18 through a coupling. The eccentric block of the vibrator 19 is rigidly fixed to the frame of the first screen 2 and the second screen 3. After the first vibrating motor 17 and the second vibrating motor 18 work, they drive the vibrator 19 (such as the eccentric block rotating), generating periodic centrifugal force, which forces the first screen 2 and the second screen 3 to make reciprocating or elliptical motion in a specific direction (horizontal, vertical or three-dimensional), thereby realizing the vibration screening of materials. The above vibration screening method is existing technology and will not be elaborated on here.

[0041] In this embodiment, the angle between the first vibration motor 17 and the second vibration motor 18 after installation is between 60 and 80 degrees.

[0042] It should be noted that by designing the included angle between the vibration motor 17 and the vibration motor 2 18 to be between 60 and 80 degrees, during the installation of the two motors, since the motors are fixed by bolts, designing them with an included angle allows for better fixing of the bolts in the middle, ensuring the safety of the installation bolts, and also facilitating disassembly.

[0043] The above embodiment describes a method where mud is conveyed to screen 3 via mud conveying pipe 13. Screen 3 vibrates and screens the mud for the first stage of treatment, separating larger materials. The mud that passes through the screen enters the lower storage box 4, where solids larger than 5 mm are removed. A desanding pump 7, connected to storage box 4, pumps the mud to the upper coarse desanding hydrocyclone 9 for the second stage of separation, removing solids larger than 74 microns. The slag separated from the underflow of the desanding hydrocyclone 9 is discharged onto screen 2. The treated mud overflowing from the desanding hydrocyclone 9 enters the lower mud tank storage box 5 through a pipe. The connected desludge pump 8 draws sludge from storage box 2 5 and pumps it into the upper slender desludge hydrocyclone 10 for three-stage separation, removing solid phases larger than 20 microns. The clean sludge overflowing from the desludge hydrocyclone 10 is discharged through a pipe into storage box 3 6 in the lower sludge tank. The slag discharged from the underflow of the desludge hydrocyclone 10 is discharged again onto screen 1 2 and vibrated out. The sludge in storage box 3 6 is the final treated sludge, which can be pumped into the tunnel boring machine for recycling. Moreover, the above separation system can be configured with multiple models with a processing capacity of 300-500 cubic meters. It is easy and flexible to install, disassemble, and operate, occupies a small area, and is suitable for use in congested cities.

[0044] The embodiments of this utility model are given for the purpose of illustration and description. Although embodiments of this utility model have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the utility model. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this utility model.

Claims

1. A superimposed mud-water separation system, characterized in that, include: The support frame (1) has a screen 1 (2) and a screen 2 (3) arranged vertically inside the support frame (1). The mud is transported to the screen 2 (3). The screen 1 (2) and the screen 2 (3) are equipped with a power component to drive the mud vibration. The support frame (1) has storage boxes 1 (4), 2 (5) and 3 (6) arranged side by side with open tops near the bottom. The support frame (1) has a sand removal pump (7) and a mud removal pump (8) respectively at the bottom of the support frame (1). The inlet of the sand removal pump (7) is connected to the pipe of the storage box 1 (4). The inlet of the mud removal pump (8) is connected to the pipe of the storage box 2 (5). It also includes a desanding hydrocyclone (9) and a desludge hydrocyclone (10), which are installed on the back plate of the support frame (1) and above the screen (2). The outlet of the desanding pump (7) is connected to the inlet pipe of the desanding hydrocyclone (9), and the outlet of the desludge pump (8) is connected to the inlet pipe of the desludge hydrocyclone (10).

2. The superimposed sludge-water separation system as described in claim 1, characterized in that: The first screen (2) and the second screen (3) are inclined within the support frame (1). The first screen (2) is inclined downward toward the back plate of the support frame (1), and the second screen (3) is inclined upward toward the back plate of the support frame (1).

3. The superimposed sludge-water separation system as described in claim 2, characterized in that: The screen 2 (3) is provided with a baffle (11) below it. The baffle (11) is fixedly connected inside the support frame (1), and the outlet of the baffle (11) extends above the storage box 1 (4). The front ends of the screen 1 (2) and the screen 2 (3) are provided with downwardly inclined slag guide plates.

4. The superimposed mud-water separation system as described in claim 1, characterized in that: The back plate of the support frame (1) is provided with a mud conveying pipe (13), which extends above the screen (3). The storage box (6) is provided with a return pipe (14) extending to the outside.

5. The superimposed mud-water separation system as described in claim 1, characterized in that: The back plate of the support frame (1) is provided with a vertical screen (15), which is located above the screen one (2). The side of the vertical screen (15) away from the screen one (2) is provided with a guide plate (16), which is fixed on the outer wall of the back plate of the support frame (1), and the other end of the guide plate (16) extends above the screen two (3).

6. The superimposed sludge-water separation system as described in claim 1, characterized in that: The power assembly includes a first vibration motor (17), a second vibration motor (18), and a vibrator (19). The first vibration motor (17) and the second vibration motor (18) are installed inside the support frame (1) and above the screen (2). The vibrator (19) is also installed inside the support frame (1).

7. The superimposed mud-water separation system as described in claim 6, characterized in that: After installation, the angle between the first vibration motor (17) and the second vibration motor (18) is between 60 and 80 degrees.

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