A device for co-processing calcium carbide slag and waste acid

Abstract

The utility model relates to calcium carbide slag processing technical field, and disclose a kind of calcium carbide slag dirty acid synergic treatment equipment, including base, base top end is equipped with processing box, and processing box top end is equipped with driving motor, and driving motor output end is connected with transmission shaft, and transmission shaft bottom end outer wall is fixedly installed with several groups of guide block, and outer wall sliding sleeve is connected with connecting cylinder, and connecting cylinder outer wall is connected with stirring structure.The equipment by setting the stirring structure that can reciprocate up and down in processing box, under the driving of driving motor, driving transmission shaft and connecting cylinder rotate simultaneously, by the sliding fit between transmission shaft and connecting cylinder, stirring structure can reciprocate up and down while rotating, cooperate the several groups of stirring vane and sub stirring vane of connecting cylinder outer wall, so that calcium carbide slag and clean water mix more fully, solve the reaction efficiency slow in the prior art caused by lack of stirring structure, replace artificial flushing at the same time, reduce the harm to staff.

Description

Technical Field

[0001] This utility model relates to the field of calcium carbide slag treatment technology, specifically to a co-treatment device for calcium carbide slag-induced acid pollution. Background Technology

[0002] In the field of industrial wastewater treatment technology, especially in the treatment of wastewater from the non-ferrous metal smelting industry, the treatment of high-acidity wastewater containing heavy metals (i.e., waste acid) generated by sulfuric acid plants is a crucial step. Direct discharge of this type of wastewater without proper treatment will pollute the environment. Calcium hydroxide, the main component of calcium carbide slag, is a highly alkaline industrial waste that can neutralize the waste acid and simultaneously fix the heavy metal ions in the wastewater. Therefore, utilizing calcium carbide slag to treat waste acid is a solution that combines environmental protection and economic value.

[0003] Currently, slag flushing is mainly done manually, taking up 70% of workers' time. This is not only labor-intensive but also makes it difficult to ensure the continuity and stability of the process. Calcium carbide slag is highly alkaline and irritating to the skin and eyes. Even with protective equipment, there is still a risk of injury from direct contact during manual flushing. Existing flushing equipment, such as high-pressure water guns and spray devices, can only cover the surface of the calcium carbide slag with water and lack a stirring structure. This makes it difficult to ensure that the calcium carbide slag and water are in full contact, affecting the reaction efficiency and potentially leading to unstable neutralization results in the later stages.

[0004] To address these technical issues, we propose a co-treatment device for acidic wastewater from carbide slag. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a co-treatment device for calcium carbide slag and acid wastewater, which has the advantages of fully mixing calcium carbide slag with clean water and improving reaction efficiency, thus solving the aforementioned technical problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a co-treatment device for calcium carbide slag and acid, comprising a base, a treatment box fixedly mounted on the top of the base by a bracket, a top plate fixedly mounted on the top of the treatment box by a bracket, a drive motor fixedly mounted on the top of the top plate, a transmission shaft connected to the output end of the drive motor, the transmission shaft rotatably passing through the top plate, a conveyor belt for conveying calcium carbide slag fixedly mounted on the side of the treatment box on the top surface of the base by a bracket, a water storage tank installed below the conveyor belt, a water pump for supplying water to the inside of the treatment box connected to the side end of the water storage tank, several sets of guide blocks fixedly mounted in a circular array on the outer wall of the bottom end of the transmission shaft, and a connecting cylinder slidably sleeved on the outer wall, a guide groove matching the size and position of the guide blocks being opened on the inner wall of the top end of the connecting cylinder for the guide blocks to slide, and a stirring structure for mixing calcium carbide slag and water connected to the outer wall of the connecting cylinder.

[0007] As a preferred embodiment of this utility model, the top end of the guide groove and the top surface of the connecting cylinder are provided with a gap.

[0008] As a preferred embodiment of this utility model, the output end of the water pump is connected to several sets of water pipes, the end of the water pipe away from the water pump is located inside the treatment tank and is fixedly connected to a nozzle, and the nozzles are evenly distributed inside the treatment tank.

[0009] As a preferred technical solution of this utility model, the stirring structure includes connecting rods that are fixedly installed on the outer wall of the connecting cylinder in a circumferential array. A wedge block is fixedly installed on the bottom surface of the connecting rod at the end away from the connecting cylinder. The bottom surface of the wedge block is inclined. A stop block is fixedly installed on the inner wall of the processing box at the position corresponding to the wedge block. The stop block is located at the highest point of the inclined surface of the wedge block and at the side end of the wedge block.

[0010] As a preferred technical solution of this utility model, the stirring structure further includes a support plate fixedly installed on the top surface of the processing tank. A guide cylinder is fixedly connected to one end of the support plate facing the inside of the processing tank. The guide cylinder is a hollow cylindrical shape with an annular groove on its inner wall. A guide post is fixedly installed on the outer wall of the connecting cylinder. The end of the guide post away from the connecting cylinder is located inside the annular groove and slides inside the annular groove. The annular groove is an undulating annular groove.

[0011] As a preferred technical solution of this utility model, the outer wall of the connecting cylinder is linearly arrayed with several sets of stirring rollers from bottom to top, and the stirring rollers are fixedly installed with stirring blades at the ends away from the connecting cylinder, and the outer wall is rotatably sleeved with several sets of auxiliary stirring blades.

[0012] As a preferred technical solution of this utility model, a limiting ring is fixedly installed on the inner wall of the auxiliary stirring blade, and a slot is opened on the outer wall of the connecting cylinder corresponding to the position of the limiting ring, and the limiting ring is rotatably engaged in the slot.

[0013] As a preferred technical solution of this utility model, a rotation space is provided between each group of stirring blades and each group of auxiliary stirring blades, and a space is provided between the lowest stirring blade and auxiliary stirring blade and the bottom surface of the processing box for the stirring structure to move up and down.

[0014] Compared with the prior art, this utility model provides a co-treatment device for calcium carbide slag-induced acid pollution, which has the following beneficial effects: This invention features a reciprocating stirring structure inside the processing tank. Driven by a motor, the drive shaft and connecting cylinder rotate simultaneously. Through the sliding fit between the drive shaft and the connecting cylinder, the stirring structure can reciprocate up and down while rotating. Combined with several sets of stirring blades and auxiliary stirring blades on the outer wall of the connecting cylinder, the carbide slag and water can be mixed more thoroughly inside the processing tank. This solves the problem of slow reaction efficiency caused by the lack of a stirring structure in the prior art, which affects the subsequent neutralization effect. At the same time, it replaces manual rinsing, reducing harm to workers. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of one embodiment of the structure of this utility model; Figure 2 This is a cross-sectional schematic diagram of one embodiment of the structure of this utility model; Figure 3 The structure of this utility model Figure 2 A magnified view of part A in the diagram; Figure 4 This is a three-dimensional schematic diagram of the stirring structure in Embodiment 1 of this utility model; Figure 5 The structure of this utility model Figure 4 A magnified view of part B in the diagram; Figure 6 This is a three-dimensional schematic diagram of the second embodiment of the structure of this utility model; Figure 7 This is a cross-sectional schematic diagram of the second embodiment of the structure of this utility model; Figure 8 The structure of this utility model Figure 7 A magnified view of part of C; Figure 9 This is a three-dimensional schematic diagram of the stirring structure in Embodiment 2 of this utility model; Figure 10 This is a cross-sectional schematic diagram of the guide cylinder in the second embodiment of the present invention.

[0016] The components are as follows: 1. Base; 2. Processing box; 3. Drive motor; 4. Transmission shaft; 5. Water storage tank; 6. Water pump; 7. Guide block; 8. Connecting cylinder; 9. Water pipe; 10. Nozzle; 11. Connecting rod; 12. Wedge block; 13. Stop block; 14. Support plate; 15. Guide cylinder; 16. Annular groove; 17. Guide column; 18. Stirring roller; 19. Stirring blade; 20. Secondary stirring blade. Detailed Implementation

[0017] 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.

[0018] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship 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, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] Please see Figure 1-10A co-treatment device for calcium carbide slag and acid waste includes a base 1. A treatment box 2 is fixedly mounted on the top of the base 1 by a bracket. A top plate is fixedly mounted on the top of the treatment box 2 by a bracket. A drive motor 3 is fixedly mounted on the top of the top plate. The output end of the drive motor 3 is connected to a transmission shaft 4, which rotatably passes through the top plate and is used to drive a stirring structure to rotate and mix calcium carbide slag and clean water. A conveyor belt for conveying calcium carbide slag is fixedly mounted on the top surface of the base 1 on the side of the treatment box 2 by a bracket. One end of the conveyor belt is located at the top of the treatment box 2. A water storage tank 5 is installed below the conveyor belt for storing clean water. A water pump 6 for supplying water to the inside of the treatment box 2 is connected to the side end of the water storage tank. Several sets of guide blocks 7 are fixedly mounted in a circular array on the outer wall of the bottom end of the transmission shaft 4. The cross-section of the guide blocks 7 is square. A connecting cylinder 8 is slidably sleeved on the outer wall of the transmission shaft 4. The inner wall of the top end of the connecting cylinder 8 has a guide groove that matches the size and position of the guide blocks 7, allowing the guide blocks 7 to slide. The guide blocks 7 cooperate with the guide groove. The connecting cylinder 8 can slide up and down on the outer wall of the drive shaft 4 while maintaining the connection between the two, allowing the drive shaft 4 to drive the connecting cylinder 8 to rotate. The top of the guide groove and the top surface of the connecting cylinder 8 are spaced apart to prevent the guide block 7 from coming out of the guide groove, thus serving as a limit. The outer wall of the connecting cylinder 8 is connected to a stirring structure for mixing carbide slag and water. By setting a stirring structure that can move up and down inside the treatment tank 2, the drive shaft 4 and the connecting cylinder 8 are driven by the drive motor 3 to rotate simultaneously. Through the sliding cooperation between the drive shaft 4 and the connecting cylinder 8, the stirring structure can move up and down while rotating. With the help of several sets of stirring blades 19 and auxiliary stirring blades 20 on the outer wall of the connecting cylinder 8, the carbide slag and water can be mixed more thoroughly inside the treatment tank 2. This solves the problem of slow reaction efficiency caused by the lack of a stirring structure in the prior art, which affects the subsequent neutralization effect. At the same time, it replaces manual rinsing and reduces harm to workers.

[0021] For further details, please refer to Figure 2 , Figure 4 , Figure 7 and Figure 9 The output end of the water pump 6 is connected to several sets of water pipes 9. This is the prior art. By connecting a thicker main pipe to the output end of the water pump 6, and then connecting multiple branch pipes from one end of the main pipe, the function of one water pump 6 supplying multiple water pipes 9 at the same time can be realized. The end of the water pipe 9 away from the water pump 6 is located inside the treatment tank 2 and is fixedly connected to a nozzle 10. In this utility model, the water pipe 9 is made of rigid PVC material, and the bends are connected with elbow joints. The nozzles 10 are evenly distributed inside the treatment tank 2 to spray clean water evenly on the carbide slag inside the treatment tank 2. Combined with the stirring structure, it can be mixed.

[0022] The drive motor 3 used in this utility model is model JS138-4 with a power of 180kW. It is a high-power AC asynchronous motor suitable for large-scale co-treatment equipment for calcium carbide slag and acid waste. It has good starting performance, can start smoothly under heavy load, and has good speed regulation performance and operational stability.

[0023] The water pump 6 used in this utility model is model IHF50-32-160, which is an IHF type fluoroplastic alloy centrifugal pump. The flow parts of this model of water pump are made of fluoroplastic alloy, which has excellent corrosion resistance and can effectively resist the corrosion of calcium carbide slag acid. The flow rate is generally 7.5-25 m³ / h, and the head can reach 20-32 m. It is suitable for water supply and material mixing in calcium carbide slag acid co-treatment equipment. Example 1

[0024] Please see Figures 1-5 The stirring structure includes connecting rods 11 arranged in a circular array and fixedly installed on the outer wall of the connecting cylinder 8. A wedge-shaped block 12 is fixedly installed on the bottom surface of the connecting rod 11 at the end away from the connecting cylinder 8. The bottom surface of the wedge-shaped block 12 is inclined to provide upward movement for the stirring structure during subsequent rotation. A stop block 13 is fixedly installed on the inner wall of the processing tank 2 at the position corresponding to the wedge-shaped block 12. The stop block 13 is located at the highest point of the inclined surface of the wedge-shaped block 12 and is located on the side of the wedge-shaped block 12. When the drive motor 3 drives the transmission shaft 4 to rotate, the connecting cylinder 8 rotates along with the transmission shaft 4 under the influence of the guide block 7 connected inside it. At this time, the connecting rods 11 on the outer wall of the connecting cylinder 8 rotate, causing the wedge-shaped block 12 on its bottom surface to rotate. When the wedge-shaped block 12 contacts the stop block 13, because the bottom surface of the wedge-shaped block 12 is inclined and the initial position of the stop block is inclined... At the highest point of the inclined plane, as the wedge block 12 rotates, the stop block 13 contacts the lowest point of the inclined plane from the highest point of the wedge block 12. This causes the wedge block 12 to move obliquely upward on the surface of the stop block 13, driving the connecting rod 11 to move upward. This causes the connecting cylinder 8 to move upward on the surface of the drive shaft 4. Due to the cooperation between the guide block 7 and the guide groove, the connecting cylinder 8 moves upward in a straight line. After the wedge block 12 slides past the stop block 13 and disengages, the stirring structure sinks due to its own gravity until the top surface of the guide block 7 on the outer wall of the drive shaft 4 contacts the top surface inside the guide groove. This cycle repeats, causing the entire stirring structure to rotate inside the treatment tank 2 while reciprocating up and down. This allows the carbide slag and water inside the treatment tank 2 to mix more thoroughly, improving the reaction efficiency. Example 2

[0025] Please see Figures 6-10The stirring structure also includes a support plate 14 fixedly installed on the top surface of the processing tank 2. A guide cylinder 15 is fixedly connected to one end of the support plate 14 facing the interior of the processing tank 2. The guide cylinder 15 is a hollow cylindrical shape with an annular groove 16 on its inner wall. The annular groove 16 is an undulating annular groove, with equal heights on opposite sides of the inner wall of the guide cylinder 15 and equal height differences between its highest and lowest points. A guide post 17 is fixedly installed on the outer wall of the connecting cylinder 8. The end of the guide post 17 away from the connecting cylinder 8 is located inside the annular groove 16 and slides within it. When the drive motor 3 drives the transmission shaft 4 to rotate, the connecting cylinder 8 rotates along with the transmission shaft 4 under the influence of the guide block 7 connected inside it. At this time, the guide post 17 on the outer wall of the connecting cylinder 8 rotates. The front end of 7 slides inside the annular groove 16. As the connecting cylinder 8 rotates, the guide column 17 slides inside the undulating groove of the annular groove 16, causing the connecting cylinder 8 to move up and down following the trajectory of the annular groove 16. Due to the limiting fit between the guide block 7 and the guide groove, the connecting cylinder 8 makes a straight up-and-down reciprocating motion. When the guide column 17 moves to the highest point of the annular groove 16, the connecting cylinder 8 drives the stirring structure to move upward. When the guide column 17 moves to the lowest point of the annular groove 16, the connecting cylinder 8 drives the stirring structure to move downward, and so on. This makes the entire stirring structure rotate inside the treatment tank 2 while making up-and-down reciprocating motion, so that the carbide slag and water inside the treatment tank 2 can be mixed more thoroughly, improving the reaction efficiency.

[0026] Furthermore, several sets of stirring rollers 18 are linearly arrayed from bottom to top on the outer wall of the connecting cylinder 8. A stirring blade 19 is fixedly installed at the end of the stirring roller 18 away from the connecting cylinder 8. The arrangement of the stirring rollers 18 and stirring blades 19 can stir and mix the carbide slag and clean water inside the treatment tank 2. Several sets of auxiliary stirring blades 20 are rotatably sleeved on the outer wall of the stirring roller 18. A limit ring is fixedly installed on the inner wall of the auxiliary stirring blades 20. A slot is opened on the outer wall of the connecting cylinder 8 corresponding to the position of the limit ring. The limit ring can be rotatably locked in the slot. The rotatable connection of the auxiliary stirring blades 20 can play a longitudinal stirring role while the stirring roller 18 rotates and stirs laterally, so that the stirring structure can stir in multiple directions and make the stirring and mixing effect better. There is a rotation space between each set of stirring blades 19 and each set of auxiliary stirring blades 20. There is a space between the bottom stirring blades 19 and auxiliary stirring blades 20 and the bottom surface of the treatment tank 2 for the stirring structure to move up and down. This arrangement can avoid the problem of motion interference between the components during operation.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A co-treatment device for calcium carbide slag and acid waste, comprising a base (1), a treatment box (2) fixedly mounted on the top of the base (1) by a bracket, a top plate fixedly mounted on the top of the treatment box (2) by a bracket, a drive motor (3) fixedly mounted on the top of the top plate, a transmission shaft (4) connected to the output end of the drive motor (3), the transmission shaft (4) rotatably passing through the top plate, a conveyor belt for conveying calcium carbide slag fixedly mounted on the side of the treatment box (2) on the top surface of the base (1), a water storage tank (5) installed below the conveyor belt, and a water pump (6) for supplying water to the inside of the treatment box (2) connected to the side end of the water storage tank, characterized in that: The drive shaft (4) has several sets of guide blocks (7) fixedly installed in a circular array on the outer wall of the bottom end, and a connecting cylinder (8) is slidably sleeved on the outer wall. The inner wall of the top end of the connecting cylinder (8) is provided with a guide groove that matches the size and position of the guide block (7) for the guide block (7) to slide. The outer wall of the connecting cylinder (8) is connected to a stirring structure for mixing carbide slag and water.

2. The co-treatment equipment for calcium carbide slag-induced acid pollution according to claim 1, characterized in that: The top of the guide groove is spaced from the top surface of the connecting cylinder (8).

3. The co-treatment equipment for calcium carbide slag-induced acid pollution according to claim 1, characterized in that: The output end of the water pump (6) is connected to several sets of water pipes (9). The end of the water pipe (9) away from the water pump (6) is located inside the treatment tank (2) and is fixedly connected to a nozzle (10). The nozzles (10) are evenly distributed inside the treatment tank (2).

4. The co-treatment equipment for calcium carbide slag-induced acid pollution according to claim 1, characterized in that: The stirring structure includes connecting rods (11) arranged in a circular array and fixedly installed on the outer wall of the connecting cylinder (8). A wedge block (12) is fixedly installed on the bottom surface of the connecting rod (11) away from the connecting cylinder (8). The bottom surface of the wedge block (12) is inclined. A stop block (13) is fixedly installed on the inner wall of the processing box (2) corresponding to the position of the wedge block (12). The stop block (13) is located at the highest point of the inclined surface of the wedge block (12) and is located at the side end of the wedge block (12).

5. The co-treatment equipment for calcium carbide slag-induced acid pollution according to claim 1, characterized in that: The stirring structure also includes a support plate (14) fixedly installed on the top surface of the processing tank (2). A guide cylinder (15) is fixedly connected to one end of the support plate (14) facing the inside of the processing tank (2). The guide cylinder (15) is a hollow cylindrical shape with an annular groove (16) on its inner wall. A guide column (17) is fixedly installed on the outer wall of the connecting cylinder (8). The end of the guide column (17) away from the connecting cylinder (8) is located inside the annular groove (16) and slides inside the annular groove (16). The annular groove (16) is an undulating annular groove.

6. A co-treatment device for calcium carbide slag-induced acid pollution according to claim 4 or 5, characterized in that: The outer wall of the connecting cylinder (8) is linearly arrayed with several sets of stirring rollers (18) from bottom to top. The stirring rollers (18) are fixedly installed with stirring blades (19) at the end away from the connecting cylinder (8), and several sets of auxiliary stirring blades (20) are rotatably sleeved on the outer wall.

7. The co-treatment equipment for calcium carbide slag-induced acid pollution according to claim 6, characterized in that: The inner wall of the auxiliary stirring blade (20) is fixedly installed with a limiting ring, and the outer wall of the connecting cylinder (8) is provided with a slot corresponding to the position of the limiting ring. The limiting ring is rotatably engaged in the slot.

8. The co-treatment equipment for calcium carbide slag-induced acid pollution according to claim 7, characterized in that: A rotation space is provided between each set of stirring blades (19) and each set of auxiliary stirring blades (20). The lowest stirring blade (19) and auxiliary stirring blade (20) are provided with a space for the stirring structure to move up and down between the bottom surface of the processing box (2).

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