A high-efficiency temperature raising device for red mud recirculation

Abstract

This utility model discloses a high-efficiency heating device for red mud return water, including a washing tank, a heater, a feeding shell, and a storage tank. The outer wall of the washing tank is fixedly connected to multiple sets of water inlets. A rotating shaft is rotatably connected to the inner wall of the washing tank, and several evenly arranged stirring blades are fixedly connected to the surface of the rotating shaft. A timing gear is rotatably connected to the outer wall of the washing tank, with the shaft end of the timing gear fixedly connected to one end of the rotating shaft. A return water pipe and a water inlet pipe are fixedly connected to the side wall of the washing tank. A shut-off valve is installed on the surface of the return water pipe. A water distribution pipe is fixedly connected to one end of the return water pipe and the water inlet pipe, and a pump body for pressurization is installed on the surface of the water distribution pipe. This utility model, through a water circulation system composed of the return water pipe, the water inlet pipe, the water distribution pipe, and the connecting branch pipe, combined with the pressurization effect of the pump body, enables rapid water circulation and heating by the heater, improving energy utilization efficiency, shortening heating time, reducing energy consumption, and reducing the error in water temperature uniformity in the washing tank.

Description

Technical Field

[0001] This utility model relates to the field of red mud utilization technology, specifically a high-efficiency temperature raising device for red mud recirculation. Background Technology

[0002] In the alumina production process, the treatment and reuse of red mud are crucial steps. Traditional red mud reclaimed water heating devices are inefficient and suffer from several problems. Firstly, red mud often clumps before entering the treatment stage, hindering subsequent washing and heating processes and affecting the heating effect and treatment quality of the reclaimed water. Secondly, the water circulation system of traditional devices is not efficient enough, failing to quickly and stably heat the reclaimed water to the appropriate temperature, resulting in energy waste and prolonged processing time. Furthermore, the red mud feeding process is not smooth and prone to blockages. Therefore, those skilled in the art have provided a high-efficiency red mud reclaimed water heating device to address the problems mentioned in the background section. Utility Model Content

[0003] The purpose of this invention is to provide a high-efficiency temperature-raising device for red mud reclaimed water, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A high-efficiency temperature-raising device for red mud return water includes a washing tank, a heater, a feeding shell, and a storage tank. The outer wall of the washing tank is fixedly connected to multiple sets of water inlets. A rotating shaft is rotatably connected to the inner wall of the washing tank, and several evenly arranged stirring blades are fixedly connected to the surface of the rotating shaft. A timing gear is rotatably connected to the outer wall of the washing tank, with the shaft end of the timing gear fixedly connected to one end of the rotating shaft. A return water pipe and a water inlet pipe are fixedly connected to the side wall of the washing tank. A shut-off valve is installed on the surface of the return water pipe. A branch pipe is fixedly connected to one end of both the return water pipe and the water inlet pipe. A pump body for pressurization is installed on the surface of the branch pipe. A connecting branch pipe is fixedly connected to one end of the branch pipe, and the connecting branch pipe is connected to the heater and the storage tank respectively.

[0006] Furthermore, a feeding shell is provided on the upper surface of the washing pool. The feeding shell is inclined, and the outlet end of the feeding shell is located above the opening of the washing pool.

[0007] Furthermore, an auger is rotatably connected to the inner wall of the feeding shell, and a servo motor is fixedly connected to the outer wall of the feeding shell, with the power output end of the servo motor fixedly connected to the shaft end of the auger.

[0008] Furthermore, a separation shell is fixedly connected to the upper surface of the feeding shell, and a feeding hopper is fixedly connected to the upper surface of the separation shell.

[0009] Furthermore, two sets of crushing rollers are rotatably connected to the inner wall of the separation shell, and the teeth of the two sets of crushing rollers are interlocked.

[0010] Furthermore, a drive gear and a driven gear are rotatably connected to the outer wall of the separation shell, and the shaft ends of the drive gear and the driven gear are respectively fixedly connected to one end of two sets of crushing rollers.

[0011] Furthermore, a drive motor is fixedly connected to the outer wall of the separation housing, and the power output end of the drive motor is fixedly connected to the end of the transmission gear shaft.

[0012] By adopting the above technical solution

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The water circulation system, consisting of return pipe, inlet pipe, distribution pipe and connecting branch pipe, combined with the pressurization effect of the pump, enables the water to circulate quickly and be heated by the heater, which improves energy utilization efficiency, shortens the heating time, reduces energy consumption and reduces the error of water temperature uniformity in the washing pool.

[0015] 2. The crushing rollers inside the separation shell pre-crush the agglomerated red mud, solving the problem of insufficient washing caused by uneven material particle size in traditional equipment. This increases the contact area between the red mud and hot water, improving the alkali recovery rate. The combination of the auger and the inclined feeding shell ensures that the red mud is smoothly transported to the washing tank, avoiding blockage during the feeding process and ensuring the continuous and stable operation of the equipment. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of a high-efficiency temperature-raising device for red mud recirculation;

[0017] Figure 2 A top view of a high-efficiency temperature-raising device for red mud recirculation;

[0018] Figure 3 A side view of a high-efficiency temperature-raising device for red mud recirculation;

[0019] Figure 4 A high-efficiency temperature raising device for red mud reclaiming water Figure 3 Enlarged view of point A in the middle.

[0020] In the diagram: 1. Washing tank; 2. Heater; 3. Storage tank; 4. Feeding shell; 5. Separation shell; 6. Feed hopper; 7. Crushing roller; 8. Driven gear; 9. Transmission gear; 10. Drive motor; 11. Screwdriver; 12. Servo motor; 13. Rotating shaft; 14. Agitator blade; 15. Timing gear; 16. Water inlet; 17. Return water pipe; 18. Water inlet pipe; 19. Shut-off valve; 20. Water distribution pipe; 21. Pump body; 22. Connecting branch pipe. Detailed Implementation

[0021] To make the technical means, creative features, achieved objectives and effects of this utility model easier to understand, the present utility model is further described below in conjunction with specific embodiments. In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0022] Please see Figures 1-4 This utility model provides an embodiment of a high-efficiency heating device for red mud return water, including a washing tank 1, a heater 2, a feeding shell 4, and a storage tank 3. Multiple sets of water inlet ports 16 are fixedly connected to the outer wall of the washing tank 1. A rotating shaft 13 is rotatably connected to the inner wall of the washing tank 1. Several evenly arranged stirring blades 14 are fixedly connected to the surface of the rotating shaft 13. A timing gear 15 is rotatably connected to the outer wall of the washing tank 1, with the shaft end of the timing gear 15 fixedly connected to one end of the rotating shaft 13. A return water pipe 17 and a water inlet pipe 18 are fixedly connected to the side wall of the washing tank 1. A shut-off valve 19 is provided on the surface of the return water pipe 17. A water distribution pipe 20 is fixedly connected to one end of the return water pipe 17 and the water inlet pipe 18. A pump body 21 for pressurization is provided on the surface of the water distribution pipe 20. A connecting branch pipe 22 is fixedly connected to one end of the water distribution pipe 20, and the connecting branch pipe 22 is respectively connected to the heater 2 and the storage tank 3. Water is injected into the washing tank 1 through the inlet 16. At the same time, the timing gear 15 drives the rotating shaft 13 to rotate, so that the stirring blades 14 stir the mixture of red mud and water, and thoroughly wash the red mud. The wastewater after washing enters the distribution pipe 20 through the return water pipe 17. After being pressurized by the pump body 21, it is diverted through the connecting branch pipe 22. Part of the wastewater enters the heater 2 and is heated to the target temperature (such as above 90°C). It is then returned to the washing tank 1 through the inlet water pipe 18 and mixed with the new material for washing. The other part is temporarily stored in the storage tank 3 as a backup heat source or to balance the system water temperature, realizing the return water heating and recycling. Through the water circulation system composed of the return water pipe 17, the inlet water pipe 18, the distribution pipe 20 and the connecting branch pipe 22, combined with the pressurization effect of the pump body 21, the water can be quickly circulated and heated by the heater 2, which improves the energy utilization efficiency, shortens the heating time, reduces energy consumption, and reduces the water temperature uniformity error of the washing tank 1.

[0023] In this embodiment, a feeding shell 4 is mounted on the upper surface of the washing tank 1. The feeding shell 4 is inclined, with its outlet located above the open end of the washing tank 1. An auger 11 is rotatably connected to the inner wall of the feeding shell 4, and a servo motor 12 is fixedly connected to the outer wall of the feeding shell 4. The power output end of the servo motor 12 is fixedly connected to the shaft end of the auger 11. A separation shell 5 is fixedly connected to the upper surface of the feeding shell 4, and a feed hopper 6 is fixedly connected to the upper surface of the separation shell 5. Two sets of crushing rollers 7 are rotatably connected to the inner wall of the separation shell 5, and the teeth of the two sets of crushing rollers 7 are interlocked. A transmission gear 9 and a driven gear 8 are rotatably connected to the outer wall of the separation shell 5. The shaft ends of the transmission gear 9 and the driven gear 8 are respectively fixedly connected to one end of the two sets of crushing rollers 7. A drive motor 10 is also fixedly connected to the outer wall of the separation shell 5, and the power output end of the drive motor 10 is connected to the transmission gear 9. Gear 9 is fixedly connected to the shaft end; red mud material enters the separation shell 5 from the feed hopper 6. The drive motor 10 drives two sets of crushing rollers 7 to rotate in opposite directions through the transmission gear 9 and the driven gear 8. The staggered teeth are used to crush the agglomerated red mud to a uniform particle size. The crushed red mud falls into the inclined feeding shell 4. The servo motor 12 drives the auger 11 to rotate and transport the material along the inclined channel to the top of the opening of the washing tank 1. It falls into the tank automatically by gravity. The crushing rollers 7 in the separation shell 5 pre-crush the agglomerated red mud, which solves the problem of insufficient washing caused by uneven material particle size in traditional devices. This increases the contact area between the red mud and hot water and improves the alkali recovery rate. The combination of the auger 11 and the inclined feeding shell 4 ensures that the red mud is smoothly transported to the washing tank 1, avoids the blockage problem during the feeding process, and ensures the continuous and stable operation of the device.

[0024] Red mud material enters the separation shell 5 from the feed hopper 6. The drive motor 10 drives two sets of crushing rollers 7 to rotate in opposite directions through the transmission gear 9 and the driven gear 8. The interlaced teeth crush the agglomerated red mud into uniform particle size. The crushed red mud falls into the inclined feeding shell 4. The servo motor 12 drives the auger 11 to rotate, conveying the material along the inclined channel to the top of the opening of the washing tank 1. It falls into the tank automatically by gravity. Water is injected into the washing tank 1 through the water inlet 16. At the same time, the timing gear 15 drives the rotating shaft 13 to rotate, so that the stirring blades 14 stir the mixture of red mud and water, and thoroughly wash the red mud. The wastewater after washing enters the water distribution pipe 20 through the return water pipe 17. After being pressurized by the pump body 21, it is diverted through the connecting branch pipe 22. Part of the wastewater enters the heater 2 to be heated to the target temperature (such as above 90°C) and returns to the washing tank 1 through the water inlet pipe 18 to be mixed with new material for washing. The other part is temporarily stored in the storage tank 3 as a backup heat source or to balance the system water temperature, realizing the return water heating and recycling.

[0025] The water circulation system, consisting of return pipe 17, inlet pipe 18, branch pipe 20, and connecting branch pipe 22, combined with the pressurization effect of pump body 21, enables rapid water circulation and heating through heater 2, improving energy utilization efficiency, shortening heating time, reducing energy consumption, and reducing the water temperature uniformity error in washing tank 1. The crushing roller 7 in the separation shell 5 pre-crushes the agglomerated red mud, solving the problem of insufficient washing caused by uneven material particle size in traditional devices, increasing the contact area between red mud and hot water, and improving alkali recovery rate. The combination of screw conveyor 11 and inclined feeding shell 4 ensures smooth delivery of red mud to washing tank 1, avoiding blockage during the feeding process and ensuring continuous and stable operation of the device.

[0026] This specification describes embodiments, but not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-efficiency temperature-raising device for red mud reclaimed water, characterized in that, The system includes a washing tank (1), a heater (2), a feeding shell (4), and a storage tank (3). The outer wall of the washing tank (1) is fixedly connected to multiple sets of water inlets (16) for water supply. The inner wall of the washing tank (1) is rotatably connected to a rotating shaft (13). Several evenly arranged stirring blades (14) are fixedly connected to the surface of the rotating shaft (13). The outer wall of the washing tank (1) is rotatably connected to a timing gear (15). The shaft end of the timing gear (15) is fixed to one end of the rotating shaft (13). The washing pool (1) is connected to a return water pipe (17) and an inlet water pipe (18) fixedly connected to the side wall. A shut-off valve (19) is provided on the surface of the return water pipe (17). A branch water pipe (20) is fixedly connected to one end of the return water pipe (17) and the inlet water pipe (18). A pump body (21) for pressurization is provided on the surface of the branch water pipe (20). A connecting branch pipe (22) is fixedly connected to one end of the branch water pipe (20). The connecting branch pipe (22) is connected to the heater (2) and the storage tank (3) respectively.

2. The high-efficiency temperature raising device for red mud reclaimed water according to claim 1, characterized in that, The washing tank (1) is provided with a feeding shell (4) on its upper surface. The feeding shell (4) is inclined and the outlet end of the feeding shell (4) is located above the opening of the washing tank (1).

3. The high-efficiency temperature raising device for red mud reclaimed water according to claim 1, characterized in that, The inner wall of the feeding shell (4) is rotatably connected to an auger (11), and the outer wall of the feeding shell (4) is fixedly connected to a servo motor (12). The power output end of the servo motor (12) is fixedly connected to the shaft end of the auger (11).

4. The high-efficiency temperature raising device for red mud reclaimed water according to claim 1, characterized in that, The upper surface of the feeding shell (4) is fixedly connected to the separation shell (5), and the upper surface of the separation shell (5) is fixedly connected to the feeding hopper (6).

5. The high-efficiency temperature raising device for red mud reclaimed water according to claim 4, characterized in that, The inner wall of the separation shell (5) is rotatably connected to two sets of crushing rollers (7), and the teeth of the two sets of crushing rollers (7) are interlocked.

6. A high efficiency bauxite red mud return water heating device according to claim 4, characterized in that, The outer wall of the separation shell (5) is rotatably connected to a transmission gear (9) and a driven gear (8), and the shaft ends of the transmission gear (9) and the driven gear (8) are respectively fixedly connected to one end of two sets of crushing rollers (7).

7. A high efficiency bauxite red mud return water heating device according to claim 4, characterized in that, The outer wall of the separation shell (5) is also fixedly connected to a drive motor (10), and the power output end of the drive motor (10) is fixedly connected to the shaft end of the transmission gear (9).

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