Red mud gas-liquid coupling deep dealkalization device
By designing a deep decaling device for red mud gas-liquid coupling in the red mud decaling device, the structure of the guide groove and separation groove is used to avoid the problem of laying the air pipes in the stirring box, and a more efficient decaling and cleaning process is achieved.
Patent Information
- Application Number
- CN202421802222.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-07-29
AI Technical Summary
In the existing red mud dealking device, the air pipe occupies a large space, the mixed liquid is not discharged thoroughly, it is inconvenient to clean it, and it is easy to cause blockage after the gas stops, affecting use.
A red mud gas-liquid coupling deep alkalizing device is designed. By opening a guide groove inside the shaft and opening a separation groove inside the stirring rod, an exhaust port and a sealing mechanism are arranged on the outside of the stirring rod, and the intake pipe is connected to the separation groove, which avoids the arrangement of the air pipe in the stirring box, increases the solvent capacity, and makes cleaning more convenient.
It is achieved without the need to arrange a gas pipe in the mixing box, which increases the solvent capacity inside the mixing box, making cleaning more convenient, avoids the solution reflux and causes the exhaust port to be blocked, and increases the contact area and mixing rate between the gas and the solution.
Smart Images
Figure CN222989981U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a de-alkalization device, in particular to a red mud gas-liquid coupling deep de-alkalization device, belonging to the technical field of red mud de-alkalization. Background Technique
[0002] Carbon dioxide red mud de-alkalization is a treatment method that uses carbon dioxide to de-alkalize red mud. Its main principle is to use carbon dioxide to react with the alkaline substances in red mud to reduce the alkalinity of red mud, thereby achieving the purpose of de-alkalization. During the de-alkalization process, red mud is sent into a stirring reactor through a conveying system and mixed with water. The bottom or side wall of the stirring reactor is evenly provided with a gas distribution pipe. While stirring, CO2 gas is blown in through a blower. After reacting for a certain period of time, the red mud mixture is discharged into a sedimentation tank and left to stand.
[0003] The current method similar to the above still has deficiencies:
[0004] The gas distribution pipe is placed on the inner wall of the stirring tank, which not only occupies the internal space, but also causes a certain amount of accumulation during the discharge of the mixed liquid, the discharge is not thorough, and it is inconvenient to clean. In addition, after the gas delivery stops, the mixed liquid easily enters the inside of the gas distribution pipe through the exhaust hole, causing blockage and affecting the use;
[0005] Therefore, a red mud gas-liquid coupling deep de-alkalization device is designed to optimize the above problems. Content of the Utility Model
[0006] The main purpose of the utility model is to provide a red mud gas-liquid coupling deep de-alkalization device. By opening a guide groove inside the shaft rod and a separation groove inside the stirring rod, the outer side of the stirring rod is evenly provided with exhaust ports communicating with the separation groove, and at the same time, the guide groove communicates with the separation groove. The end of the air inlet pipe is communicated with the separation groove through a rotating mechanism, so that the device does not need to arrange an air pipe inside the stirring tank, increasing the solvent inside the stirring tank and making it more convenient to clean. By slidably arranging a piston inside the stirring rod and cooperating with a first spring, internal sealing can be carried out after the ventilation is completed, and a fixed ring, a second spring and a collar are arranged on the outer side of the stirring rod, which can carry out external sealing after the ventilation is completed, effectively avoiding the blockage of the exhaust port caused by the solution backflow. By arranging a conical cover inside the stirring tank, the gas discharge can be slowed down and the contact area between the gas and the solution can be increased. By using the conical cover at the top in cooperation with the sleeve and the dial plate, uniform feeding can be carried out when the red mud raw material is injected, improving the mixing rate.
[0007] The purpose of the utility model can be achieved by adopting the following technical solutions:
[0008] An apparatus for deep alkali removal by gas-liquid coupling of red mud includes a stirring tank, a feed pipe opened at the outer top of the stirring tank, a shaft rod vertically and rotatably installed at the middle position inside the stirring tank, a stirring rod vertically fixed to the side of the shaft rod, and a stirring motor fixed to the top of the stirring tank to drive the shaft rod. A guide groove is opened along the length direction inside the shaft rod, and separation grooves communicating with the guide groove are opened along the length direction inside the stirring rods. An air inlet pipe is installed at the bottom end of the stirring tank, and a rotary joint is installed between the end of the air inlet pipe and the bottom end of the guide groove. Exhaust ports are opened on the outer sides of the ends of the stirring rods, and a sealing mechanism for blocking the exhaust ports is provided at the ends of the stirring rods.
[0009] Preferably, the sealing mechanism includes a piston, a first spring, and an outer sealing assembly. The piston is slidably arranged inside the separation groove, and the outer side of the piston fits against the inner end of the exhaust port. A first spring is provided between the side of the piston and the inner end of the separation groove, and an outer sealing assembly for blocking the exhaust port is provided on the outer side of the stirring rod.
[0010] Preferably, the outer sealing assembly includes a collar, a fixing ring, and a second spring. The collar is sleeved on the stirring rod, the fixing ring is fixed to the end of the stirring rod, a second spring is provided between the fixing ring and the collar, and the second spring is sleeved on the stirring rod.
[0011] Preferably, a rubber ring is provided on the inner side of the collar, and the rubber ring fits against the outer side of the exhaust port.
[0012] Preferably, the diameter of the exhaust port at the outer end of the stirring rod is larger than the diameter of the inner end of the exhaust port.
[0013] Preferably, conical covers are fixed to both the inner top and the inner bottom of the stirring tank, and the shaft rod passes through the centers of the conical covers and is rotatably connected to the conical covers.
[0014] Preferably, a sleeve is fixed to the inner top of the stirring tank, the shaft rod passes through the inside of the sleeve, a gap is left between the bottom end of the sleeve and the top of the conical cover, a baffle is fixed to the outer side of the shaft rod and inside the sleeve, and the feed pipe extends to the top of the sleeve.
[0015] The beneficial effects of the present utility model are as follows:
[0016] The apparatus for deep alkali removal by gas-liquid coupling of red mud provided by the present utility model opens a guide groove inside the shaft rod, opens separation grooves inside the stirring rods, evenly opens exhaust ports communicating with the separation grooves on the outer side of the stirring rods, and at the same time, the guide groove communicates with the separation grooves, and the end of the air inlet pipe communicates with the separation grooves through a rotary mechanism, so that the apparatus does not need to arrange air pipes inside the stirring tank, increases the solvent inside the stirring tank, and is more convenient for cleaning;
[0017] By slidably arranging a piston inside the stirring rod and cooperating with a first spring, internal sealing can be achieved after ventilation. A fixing ring, a second spring and a collar are arranged outside the stirring rod, which can achieve external sealing after ventilation, effectively avoiding the blockage of the exhaust port caused by the backflow of the solution;
[0018] By arranging a conical cover inside the stirring tank, the discharge of gas can be slowed down, and the contact area between the gas and the solution can be increased. By using the conical cover at the top in cooperation with the sleeve and the baffle plate, uniform feeding can be achieved when the red mud raw material is injected, improving the mixing rate. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 is the front sectional view of the present utility model;
[0020] Figure 2 of the present utility model Figure 1 is the enlarged view at A in;
[0021] Figure 3 is the structural diagram of the end of the stirring rod of the present utility model;
[0022] Figure 4 is the front view of the present utility model.
[0023] In the figure: 1, stirring tank; 2, feed pipe; 3, stirring motor; 4, shaft rod; 5, stirring rod; 6, guide groove; 7, separation groove; 8, intake pipe; 9, rotary joint; 10, exhaust port; 11, piston; 12, first spring; 13, collar; 14, fixing ring; 15, second spring; 16, conical cover; 17, sleeve; 18, baffle plate. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0024] To make the technical solutions of the present utility model clearer and more definite for those skilled in the art, the present utility model will be further described in detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present utility model are not limited thereto.
[0025] As Figures 1-4 shown, this embodiment provides a red mud gas-liquid coupling deep dealkalization device, including a stirring tank 1, a feed pipe 2 opened at the outer top of the stirring tank 1, a shaft rod 4 vertically and rotatably installed at the middle position inside the stirring tank 1, a stirring rod 5 vertically fixed on the side of the shaft rod 4, and a stirring motor 3 fixed on the top of the stirring tank 1 to drive the shaft rod 4. A guide groove 6 is opened along the length direction inside the shaft rod 4, and separation grooves 7 communicated with the guide groove 6 are opened along the length direction inside the stirring rods 5. An intake pipe 8 is installed at the bottom end of the stirring tank 1, and a rotary joint 9 is installed between the end of the intake pipe 8 and the bottom end of the guide groove 6. Exhaust ports 10 are opened on the outer sides of the ends of the stirring rods 5, and a sealing mechanism for sealing the exhaust ports 10 is provided at the ends of the stirring rods 5.
[0026] The overall working principle is as follows: during dealkalization, water is first injected into the interior of the mixing box 1, and then the red mud raw material is injected from the feed pipe 2 to mix with water, and then the stirring motor 3 is started to drive the shaft 4 and the stirring rod 5 to rotate, so as to accelerate the mixing of the red mud and water. During the mixing process, the carbon dioxide gas is introduced into the interior of the air inlet pipe 8, and the gas passes through the guide groove 6 into the interior of the separation tank 7, thereby releasing the blockage state of the exhaust port 10 and releasing the carbon dioxide. At the same time, the exhaust gas rotates with the stirring rod 5 to increase the contact effect between the gas and the solution and accelerate the dealkalization reaction. After the dealkalization is completed, the sealing mechanism automatically blocks the exhaust port 10 to prevent the precipitate from blocking the exhaust port 10.
[0027] In this embodiment, the sealing mechanism includes a piston 11, a first spring 12 and an external sealing assembly. The piston 11 is slidably arranged inside the separation groove 7, and the outer side of the piston 11 is attached to the inner end of the exhaust port 10. A first spring 12 is provided between the side of the piston 11 and the inner end of the separation groove 7, and an external sealing assembly for sealing the exhaust port 10 is provided on the outer side of the stirring rod 5.
[0028] Local working principle: After carbon dioxide is injected into the separation tank 7, the pressure inside the separation tank 7 increases, which will control the piston 11 to squeeze the first spring 12. The piston 11 is misaligned with the exhaust port 10, and the exhaust port 10 is released from the blockage. After the dealkalization is completed, the outer sealing component first blocks the outer end of the exhaust port 10, and then stops the delivery of carbon dioxide. The piston 11 is reset under the action of the first spring 12 to seal the inner end of the exhaust port 10.
[0029] In this embodiment, the outer sealing assembly includes a sleeve ring 13, a fixing ring 14 and a second spring 15. The sleeve ring 13 is sleeved on the stirring rod 5. The fixing ring 14 is fixed to the end of the stirring rod 5. The second spring 15 is provided between the fixing ring 14 and the sleeve ring 13, and the second spring 15 is sleeved on the stirring rod 5.
[0030] Local working principle: during the rotation of the stirring rod 5, the collar 13 is subjected to centrifugal force, thereby compressing the second spring 15 and exposing the exhaust port 10. After the dealkalization is completed, the stirring motor 3 is turned off first. At this time, the second spring 15 is quickly reset, and the collar 13 blocks the outer end of the exhaust port 10.
[0031] In this embodiment, a rubber ring is provided inside the collar 13 , and the rubber ring is in contact with the outside of the exhaust port 10 .
[0032] Partial working principle: The setting of the rubber ring can fit more closely with the outer side of the exhaust port 10, thereby improving the sealing effect.
[0033] In this embodiment, the diameter of the exhaust port 10 at the outer end of the stirring rod 5 is larger than that of the inner end of the exhaust port 10.
[0034] Local working principle: When the gas is discharged, due to the larger open end at the outer end, the gas has a larger diffusion range, improving the contact effect with the liquid.
[0035] In this embodiment, conical covers 16 are fixed to both the inner top and the inner bottom of the stirring tank 1. The shaft rod 4 passes through the center of the conical cover 16 and is rotatably connected to the conical cover 16.
[0036] Local working principle: When the gas rises from bottom to top, the use of the conical cover 16 can delay the flow rate of the gas and increase the gas-liquid contact effect.
[0037] In this embodiment, a sleeve 17 is fixed to the inner top of the stirring tank 1. The shaft rod 4 passes through the inside of the sleeve 17. There is a gap between the bottom end of the sleeve 17 and the top of the conical cover 16. A baffle 18 is fixed on the outside of the shaft rod 4 and inside the sleeve 17. The feed pipe 2 extends to the top of the sleeve 17.
[0038] Local working principle: When the red mud is injected, it first falls above the conical cover 16 at the top and then flows downward. At the same time, the stirring motor 3 drives the shaft rod 4 to rotate, and the baffle 18 squeezes the red mud in the gap between the sleeve 17 and the conical cover 16, enabling it to spread evenly outward and improving the mixing rate.
[0039] The above is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the scope disclosed by the present utility model, according to the technical solution and its concept of the present utility model, makes equivalent replacements or changes, all belong to the protection scope of the present utility model.
Claims
1. A red mud gas-liquid coupled deep dealkalization device, comprising a stirring box (1), a feed pipe (2) opened at the top of the outer side of the stirring box (1), a shaft (4) vertically rotatably installed at the middle position inside the stirring box (1), a stirring rod (5) vertically fixed to the side of the shaft (4), and a stirring motor (3) fixed to the top of the stirring box (1) to drive the shaft (4), characterized in that: A guide groove (6) is provided inside the shaft (4) along the length direction, a separation groove (7) which is in communication with the guide groove (6) is provided inside the stirring rod (5) along the length direction, an air inlet pipe (8) is installed at the bottom end of the stirring box (1), a rotary joint (9) is installed between the end of the air inlet pipe (8) and the bottom end of the guide groove (6), an exhaust port (10) is provided on the outer side of the end of the stirring rod (5), and a sealing mechanism for blocking the exhaust port (10) is provided at the end of the stirring rod (5).
2. A red mud gas-liquid coupled deep dealkalization device according to claim 1, characterized in that: The sealing mechanism comprises a piston (11), a first spring (12) and an external sealing component. The piston (11) is slidably arranged inside the separation groove (7), and the outer side of the piston (11) is in contact with the inner end of the exhaust port (10). The first spring (12) is arranged between the side of the piston (11) and the inner end of the separation groove (7). The outer side of the stirring rod (5) is provided with an external sealing component for sealing the exhaust port (10).
3. A red mud gas-liquid coupled deep dealkalization device according to claim 2, characterized in that: The outer sealing component comprises a sleeve ring (13), a fixing ring (14) and a second spring (15); the sleeve ring (13) is sleeved on the stirring rod (5); the fixing ring (14) is fixed to the end of the stirring rod (5); a second spring (15) is arranged between the fixing ring (14) and the sleeve ring (13); and the second spring (15) is sleeved on the stirring rod (5).
4. A red mud gas-liquid coupled deep dealkalization device according to claim 3, characterized in that: A rubber ring is provided on the inner side of the sleeve ring (13), and the rubber ring is fitted to the outer side of the exhaust port (10).
5. The red mud gas-liquid coupled deep dealkalization device according to claim 1, characterized in that: The diameter of the exhaust port (10) at one end outside the stirring rod (5) is larger than the diameter of the inner end of the exhaust port (10).
6. A red mud gas-liquid coupled deep dealkalization device according to any one of claims 1 to 5, characterized in that: A conical cover (16) is fixed to the inner top and the inner bottom of the mixing box (1), and the shaft (4) passes through the center of the conical cover (16) and is rotatably connected to the conical cover (16).
7. A red mud gas-liquid coupled deep dealkalization device according to claim 6, characterized in that: A sleeve (17) is fixed to the inner top of the mixing box (1), and the shaft (4) passes through the inside of the sleeve (17). A gap is left between the bottom end of the sleeve (17) and the top of the conical cover (16). A paddle (18) is fixed to the outside of the shaft (4) and inside the sleeve (17), and the feed pipe (2) extends to the top of the sleeve (17).