A two-liquid pulping station
By designing a dual-liquid slurry preparation station, which employs a dual mixing tank and a cleaning ring structure, the problems of uneven mixing and difficult cleaning of the dual-liquid slurry during shield tunneling have been solved, thereby improving the uniformity of the slurry and the cleaning efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG HAISHUN MACHINERY CO LTD
- Filing Date
- 2025-07-28
- Publication Date
- 2026-07-14
AI Technical Summary
In shield tunneling, uneven mixing of the two-component grout leads to poor grout performance, and the grout is prone to solidification after mixing, making it difficult to clean.
Design a two-liquid pulping station that uses two mixing tanks to mix liquid A and liquid B respectively, and improves the mixing uniformity by using inclined stirring rods and stirring frames. The finished product tank is equipped with a cleaning ring and brushes for backwashing to ensure the tank is clean.
It achieves uniform mixing of the two-component slurry, improves slurry quality, effectively avoids slurry residue, and simplifies the cleaning process.
Smart Images
Figure CN224489578U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of slurry preparation technology, specifically to a two-liquid slurry preparation station. Background Technology
[0002] Nowadays, an increasing number of urban underground projects and cross-river / sea tunnels are using shield tunneling. During construction, the tunnel boring machine (TBM) advances forward, and the assembled tunnel segments are pushed out of the shield tail by jacks. This creates a structural void on the back of the segments, making synchronous grouting an essential part of the TBM process. To control ground deformation, grouting into the structural void at the shield tail controls underlying settlement and releases stress. Minimizing surface settlement and preventing excessive settlement from endangering nearby buildings has become a common concern for TBM tunnel designers and construction personnel.
[0003] Currently, the synchronous grouting slurries used in underground tunnel shield construction are divided into two types: single-slurry and dual-slurry. Dual-slurry consists of slurry A and slurry B. Slurry A is a mortar composed of cement, bentonite, stabilizing materials, and water, while slurry B is water glass. Because both slurries need to be managed simultaneously during construction, the uniformity of the two slurries is crucial. If the two slurries are not mixed evenly and then remixed, it will affect the uniformity of the slurry, leading to poor grouting performance and impacting project quality. Furthermore, the two slurries gradually solidify after mixing, requiring timely cleaning of the storage tank after each use to prevent slurry residue from solidifying inside the tank and causing cleaning difficulties. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a dual-liquid pulping station. The mixing effect of liquid A and liquid B in the mixing tank is good, and they are further mixed evenly in the finished product tank, which improves the uniformity of the two slurries. At the same time, the finished product tank is equipped with a cleaning ring that can be used for backwashing after the slurry is discharged, effectively avoiding slurry residue.
[0005] This utility model is achieved through the following technical solution:
[0006] A two-liquid pulping station is provided, comprising a finished product tank and mixing tanks respectively arranged on both sides of the finished product tank and equipped with a mixing mechanism inside. Each mixing tank has a water inlet and a feed inlet on its side wall. The water inlet is connected to a water inlet pipe, and the feed inlet is connected to a screw weighing feeder. Each mixing tank has a discharge outlet at its bottom, which is connected to the finished product tank through a discharge pipe. Each discharge pipe is equipped with a discharge pump. A p-shaped mounting frame is installed on the top of the finished product tank. A fixed base is also connected between the mounting frame and the finished product tank. A lead screw located in front of the fixed base is rotatably mounted between the two. A fixed motor for driving the lead screw to rotate is installed on the top of the mounting frame. A lifting block is vertically slidably connected to the front of the fixed base. The center of the lifting block is penetrated by the lead screw and threadedly connected to the lead screw. Connecting rods extending into the finished product tank are vertically connected to both ends of the lifting block. A cleaning ring for cleaning the inner cavity of the finished product tank is fixedly connected to the lower end of the connecting rod.
[0007] Furthermore, a gear disk with helical teeth is installed on the top of the inner cavity of the mixing tank via a fixed rod. A drive motor is installed on the top of the outer cavity of the mixing tank. The motor shaft of the drive motor passes vertically downward through the center of the gear disk and is connected to a swing rod below the gear disk. An inclined stirring rod is rotatably connected to the end of the swing rod. A transmission gear that meshes with the helical teeth on the gear disk is connected to the upper end of the inclined stirring rod. A support frame is connected to the inner cavity of the mixing tank below the gear disk. The other end of the inclined stirring rod passes through the support frame and is rotatably connected to the support frame via a spherical bearing.
[0008] The drive shaft of the drive motor can drive the swing rod to rotate. The transmission gear at the end of the swing rod can mesh with the helical teeth on the circumference of the gear disk, thereby driving the inclined stirring rod to rotate 360° on the support frame, thus realizing the mixing and stirring of the added materials. The inclined stirring plate not only revolves around the gear disk, but also rotates on its own axis, which can greatly improve the stirring efficiency of the stirring rod and make the materials more uniformly mixed.
[0009] Preferably, the lower end of the inclined stirring rod is connected to a stirring frame, and two stirring frames are provided, which are fixed at a 90° angle to the lower end of the inclined stirring rod.
[0010] A stirring frame is installed at the lower end of the inclined stirring rod. The use of two vertically staggered stirring frames can increase the stirring range and improve the mixing effect.
[0011] Furthermore, the outer periphery of the cleaning ring is connected to bristles that can abut against the inner wall of the finished product container.
[0012] By setting bristles around the circumference of the cleaning ring, the bristles can be used to rub against the inner wall of the finished product can to clean the inner wall of the finished product can and reduce residue.
[0013] Preferably, the inner wall of the finished product can is also fixed with a ring-shaped cleaning rack, the outer periphery of which can come into contact with the brush bristles.
[0014] A cleaning rack is fixed to the inner wall of the finished product can. When the bristles on the cleaning ring move up and down, they can rub against the cleaning rack to separate the particles and impurities adhering to the bristles. This prevents particles from adhering to the bristles after working for a long time, which would affect the cleaning effect.
[0015] Furthermore, a stirring shaft is vertically rotatably installed in the inner cavity of the finished product tank, with the lower end of the stirring shaft extending out of the finished product tank and connected to a stirring motor installed at the bottom of the finished product tank.
[0016] A stirring shaft is installed inside the finished product tank and driven by a stirring motor at the bottom. This shaft rotates to mix liquid A and liquid B evenly, improving the uniformity of the slurry.
[0017] The beneficial effects of this utility model are:
[0018] This invention features two mixing tanks. Inside each tank, a stirring mechanism is used to mix liquid A and liquid B. After the components of the two liquids are mixed evenly by the stirring mechanism, they are transferred to a finished product tank for further mixing. This process improves the uniformity of the two liquid mixtures and thus enhances the product quality.
[0019] The finished product tank is equipped with a cleaning ring, which can be used to scrub the inner wall of the tank with backwash water after the finished product slurry is discharged. The bristles on the cleaning ring abut against the inner wall of the finished product tank, and the lifting block moves up and down reciprocally through the screw, which can achieve the scrubbing of the inner wall of the finished product tank and effectively avoid slurry residue. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0021] Figure 2 This is a bottom view of the connection between the lifting block and the fixed base in this utility model.
[0022] Figure 3 This is a schematic diagram of the cleaning ring in this utility model.
[0023] Figure 4 This is a top view of the inclined stirring rod and stirring frame in this utility model.
[0024] As shown in the figure:
[0025] 1. Finished product tank; 2. Mixing tank; 3. Screw weighing feeder; 4. Discharge pump; 5. Mounting frame; 6. Fixed base; 7. Lead screw; 8. Fixed motor; 9. Lifting block; 10. Connecting rod; 11. Cleaning ring; 12. Brush; 13. Cleaning frame; 14. Mixing shaft; 15. Mixing motor; 16. Support rod; 17. Gear disk; 18. Drive motor; 19. Swinging rod; 20. Support frame; 21. Transmission gear; 22. Spherical bearing; 23. Inclined mixing rod; 24. Mixing frame. Detailed Implementation
[0026] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.
[0027] A two-liquid pulping station includes a finished product tank 1 and mixing tanks 2, which are respectively arranged on both sides of the finished product tank 1 and have a mixing mechanism inside. Each mixing tank 2 has a water inlet and a feed inlet on its side wall. The water inlet is connected to a water inlet pipe, and the feed inlet is connected to a screw weighing feeder 3. Each mixing tank 2 has a discharge outlet at its bottom, which is connected to the finished product tank 1 through a discharge pipe. Each discharge pipe is equipped with a discharge pump 4. A p-shaped mounting bracket 5 is installed on the top of the finished product tank 1. A fixed base 6 is connected between the mounting bracket 5 and the finished product tank 1, and a screw located in front of the fixed base 6 is rotatably mounted between the two. 7. A fixed motor 8 for driving the lead screw 7 to rotate is installed on the top of the mounting bracket 5. A lifting block 9 is vertically slidably connected to the front of the fixed base 6. A slider is protruding on the side of the lifting block 9 facing the fixed base 6. A vertical groove is recessed on the fixed base 6 to slide with the slider, so that the lifting block 9 and the fixed base 6 can be vertically slidably connected. The center of the lifting block 9 is penetrated by the lead screw 7 and threadedly connected to the lead screw 7. Connecting rods 10 extending into the finished product tank 1 are vertically connected to both ends of the lifting block 9. A cleaning ring 11 for cleaning the inner cavity of the finished product tank 1 is fixedly connected to the lower end of the connecting rod 10. Brush bristles 12 that can abut against the inner wall of the finished product tank 1 are connected to the outer periphery of the cleaning ring 11. A ring-shaped cleaning frame 13 is also fixed to the inner wall of the finished product tank 1. The outer periphery of the cleaning frame 13 can abut against the brush bristles 12. A stirring shaft 14 is vertically rotatably installed in the axial direction of the inner cavity of the finished product tank 1. The lower end of the stirring shaft 14 extends out of the finished product tank 1 and is drivenly connected to the stirring motor 15 installed at the bottom of the finished product tank 1.
[0028] A gear disk 17 with helical teeth is mounted on the top of the inner cavity of the mixing tank 2 via a fixed rod. A drive motor 18 is mounted on the top of the outer cavity of the mixing tank 2. The motor shaft of the drive motor 18 passes vertically downward through the center of the gear disk 17 and is connected to a swing rod 19 below the gear disk 17. An inclined stirring rod 23 is rotatably connected to the end of the swing rod 19. A transmission gear 21 that meshes with the helical teeth on the gear disk 17 is connected to the upper end of the inclined stirring rod 23. A support frame 20 is connected to the inner cavity of the mixing tank 2 below the gear disk 17. The other end of the inclined stirring rod 23 passes through the support frame 20 and is rotatably connected to the support frame 20 via a spherical bearing 22.
[0029] The lower end of the inclined stirring rod 23 is connected to a stirring frame 24. Two stirring frames 24 are provided, and the two stirring frames 24 are fixed at the lower end of the inclined stirring rod 23 at a 90° angle.
[0030] The working process of this utility model:
[0031] Two mixing tanks 2 are used to prepare liquid A and liquid B respectively. According to the corresponding component ratios, the solid components of liquid A are fed into mixing tank 2 through the inlet using a screw weighing feeder 3. Similarly, the solid components of liquid B are fed into mixing tank 2 through the inlet using the screw weighing feeder 3. Then, appropriate volumes of water are added to mixing tank 2 according to the mixing ratio through the water inlet pipe connected to the water inlet. The drive motor 18 at the top of mixing tank 2 is started. The motor shaft of drive motor 18 drives the swing rod 19 to rotate. The transmission gear 21 at the other end of the swing rod 19 meshes with the helical teeth on the edge of the gear disk 17, allowing it to rotate around the gear disk 17 during rotation, thereby driving... The inclined stirring rod 23 rotates and revolves, effectively increasing its stirring range. The inclined stirring rod 23, in conjunction with the spherical bearing 22 on the support frame 20, rapidly mixes the materials via the lower stirring frame 24 during rotation. Because the inclined stirring rod 23 can simultaneously rotate and revolve within the mixing tank 2, it significantly improves stirring efficiency and ensures the uniformity of the mixing of liquid A and liquid B. The separately mixed liquids A and B can be pumped into the finished product tank 1 by the discharge pump 4 for further mixing. With the continuous rotation of the stirring shaft 14 at the bottom center of the finished product tank 1, liquids A and B can be added for mixing, achieving dual-liquid slurry preparation. The prepared dual slurry can then be pumped into the grouting equipment for grouting use.
[0032] After the slurry is discharged, the inner wall of the finished product tank 1 needs to be cleaned to prevent the slurry from solidifying on the inner wall and becoming impossible to remove. Water is added to the finished product tank 1, and the fixed motor 8 is started. The fixed motor 8 drives the lead screw 7 to rotate. The lifting block 9, which is threaded with the lead screw 7, can drive the connecting rods 10 on both sides to move up and down under the guidance of the fixed seat 6. The cleaning ring 11 and brush bristles 12 at the lower end of the connecting rod 10 can brush the inner wall of the finished product tank 1 by moving up and down, washing off the slurry adhering to the inner wall of the finished product tank 1. The cleaning rack 13 fixed on the inner wall can rub against the brush bristles 12 when the brush bristles move up and down, rubbing off some particles from the brush bristles 12, preventing particles from adhering to the brush bristles 12 for a long time and affecting the cleaning effect. After rinsing and cleaning, the cleaning waste liquid is discharged from the finished product tank 1, completing the cleaning work of the finished product tank 1.
[0033] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.
Claims
1. A two-liquid pulping station, comprising a finished product tank and a mixing tank respectively disposed on both sides of the finished product tank and having a mixing mechanism disposed inside, characterized in that: Each mixing tank has a water inlet and a feed inlet on its side wall. The water inlet is connected to a water inlet pipe, and the feed inlet is connected to a screw weighing feeder. Each mixing tank has a discharge outlet at its bottom, which is connected to the finished product tank via a discharge pipe. Each discharge pipe is equipped with a discharge pump. The top of the finished product tank is equipped with a pi-shaped mounting bracket. A fixed base is connected between the mounting bracket and the finished product tank, and a lead screw located in front of the fixed base is rotatably mounted between the two. A fixed motor for driving the lead screw is mounted on the top of the mounting bracket. A lifting block is vertically slidably connected to the front of the fixed base. The center of the lifting block is pierced by the lead screw and threadedly connected to the lead screw. Both ends of the lifting block are vertically connected to connecting rods that extend into the finished product tank. The lower end of the connecting rod is fixedly connected to a cleaning ring for cleaning the inner cavity of the finished product tank.
2. The two-liquid pulping station according to claim 1, characterized in that: A gear disk with helical teeth is mounted on the top of the inner cavity of the mixing tank via a fixed rod. A drive motor is mounted on the top of the outer cavity of the mixing tank. The motor shaft of the drive motor passes vertically downward through the center of the gear disk and is connected to a swing rod below the gear disk. An inclined stirring rod is rotatably connected to the end of the swing rod. A transmission gear that meshes with the helical teeth on the gear disk is connected to the upper end of the inclined stirring rod. A support frame is connected to the inner cavity of the mixing tank below the gear disk. The other end of the inclined stirring rod passes through the support frame and is rotatably connected to the support frame via a spherical bearing.
3. The two-liquid pulping station according to claim 1, characterized in that: The lower end of the inclined stirring rod is connected to a stirring frame. Two stirring frames are provided, and the two stirring frames are fixed at a 90° angle to the lower end of the inclined stirring rod.
4. The two-liquid pulping station according to claim 1, characterized in that: The outer periphery of the cleaning ring is connected to bristles that can abut against the inner wall of the finished product container.
5. The two-liquid pulping station according to claim 4, characterized in that: The inner wall of the finished product can is also fixed with a ring-shaped cleaning rack, the outer periphery of which can come into contact with the brush bristles.
6. The two-liquid pulping station according to claim 1, characterized in that: A stirring shaft is vertically mounted on the inner cavity of the finished product tank, with its lower end extending out of the tank and connected to a stirring motor installed at the bottom of the tank.