A solid-liquid separation device for stainless steel mixed acid pickling waste acid regeneration

Abstract

The utility model provides a kind of solid-liquid separation device for stainless steel mixed pickling waste acid regeneration, it is related to solid-liquid separation technical field, including filter cavity, the inside installation of filter cavity has filter frame, the below of filter cavity one side is equipped with water outlet, the front end of filter cavity is equipped with installation cavity, the inside of installation cavity is provided with moving mechanism, the rear end of filter cavity is provided with guiding mechanism;By being provided with filter frame in the inside of filter cavity, large particle impurities can be pre-filtered, so that large particles are not easy to enter main separation mechanism, reduce the risk of wear and block, prolong the service life of equipment, by being provided with moving mechanism in the inside of installation cavity, by the cooperation between moving mechanism, filter frame can be conveniently moved upwards, so that the large particle impurities in the inside of filter frame are more convenient and fast when discharging, so as to greatly improve the practicality of the device when using.

Description

Technical Field

[0001] This utility model relates to the field of solid-liquid separation technology, and in particular to a solid-liquid separation device for the regeneration of stainless steel mixed pickling waste acid. Background Technology

[0002] In the stainless steel production and processing, the mixed pickling process is a key step in ensuring its surface quality. This process generates a large amount of mixed pickling waste acid containing components such as nitric acid and hydrofluoric acid. To meet resource recycling and environmental protection requirements, the waste acid needs to be regenerated. Solid-liquid separation is the core step in the waste acid regeneration process. Its purpose is to separate solid impurities such as metal oxides and fluoride precipitates from the acid liquid to obtain recyclable regenerated acid liquid.

[0003] Currently, solid-liquid separation devices for the regeneration of stainless steel mixed pickling waste acid mostly employ methods such as filtration, centrifugation, and pressure filtration. However, in practical applications, waste acid often contains solid particles of different sizes, including a certain amount of large particles. These large particles may originate from incompletely dissolved oxide scale fragments on the stainless steel surface, iron filings or welding slag introduced by mechanical impurities, and aggregated precipitates generated by pickling side reactions. For this type of waste acid containing large particles, it is inconvenient to pre-treat the large particles during solid-liquid separation, causing them to easily enter the main separation mechanism. This not only affects the separation efficiency but may also cause wear or blockage of the main separation components, reducing the service life of the equipment. Furthermore, it is inconvenient to conveniently discharge the large particles. During the separation process, large solid particles tend to accumulate inside the device. Existing discharge structures often require manual cleaning after shutdown or discharge through complex transmission mechanisms, which is cumbersome, reduces production efficiency, and increases labor costs and operational risks. Therefore, this utility model proposes a solid-liquid separation device for the regeneration of stainless steel mixed pickling waste acid to solve the above problems. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes a solid-liquid separation device for the regeneration of stainless steel mixed pickling waste acid, which solves the problems of inconvenience in pre-treating large particles and inconvenience in conveniently discharging large particles in the prior art.

[0005] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: a solid-liquid separation device for regenerating stainless steel mixed pickling waste acid, including a filter chamber, a filter frame installed inside the filter chamber, a water outlet installed below one side of the filter chamber, an installation cavity installed at the front end of the filter chamber, a moving mechanism provided inside the installation cavity, and a guiding mechanism provided at the rear end of the filter chamber.

[0006] The moving mechanism includes a servo motor, a threaded rod, a threaded sleeve, a support plate, a connecting rod, a mounting plate, a connecting plate, and a limiting structure. The servo motor is installed on one side below the mounting cavity. A threaded rod is installed on one side inside the mounting cavity. The output end of the servo motor is connected to one end of the threaded rod. A threaded sleeve is provided on the outer wall of the threaded rod. A support plate is installed at the front end of the threaded sleeve. A connecting rod is installed at the top end of the support plate. A connecting plate is installed at the bottom end of the connecting rod. A mounting plate is installed on the outer side below the filter frame. The mounting plate and the connecting plate are connected by bolts.

[0007] A further improvement is that the limiting structure includes a limiting rod and a limiting sleeve. The limiting rod is installed on one side inside the mounting cavity, and the outer wall of the limiting rod is provided with a limiting sleeve. The front end of the limiting sleeve is connected to the rear end of the support plate.

[0008] A further improvement is that the cross-section of the limiting rod is smaller than the cross-section of the limiting sleeve, and the limiting rod and the limiting sleeve form a sliding structure.

[0009] A further improvement is that: a fixing groove is provided inside the mounting plate, a fixing rail is provided inside the fixing groove, the top end of the fixing rail is connected to the bottom end of the filter frame, and a positioning pin is installed at the bottom end of the fixing groove.

[0010] A further improvement is that the guiding mechanism includes a fixed plate, a guide hole, and a guide rod. The fixed plate is installed above the front end of the filter chamber. The guide hole is opened through the interior of the fixed plate, and the guide rod is installed through the interior of the guide hole. One end of the guide rod is connected to the mounting plate through a connecting plate.

[0011] A further improvement is that two guide rods are provided inside the fixed plate, and the two guide rods are symmetrically distributed about the central axis of the fixed plate.

[0012] The beneficial effects of this utility model are as follows: By setting a filter frame inside the filter chamber, large particulate impurities can be pre-filtered, making it less likely for large particles to enter the main separation mechanism, reducing the risk of wear and blockage, and extending the equipment life. By setting a moving mechanism inside the mounting chamber, the filter frame can be easily moved upward by the cooperation of the servo motor, threaded rod, threaded sleeve, support plate, connecting rod, mounting plate, connecting plate, limit rod, and limit sleeve of the moving mechanism, making it easier and faster to discharge large particulate impurities inside the filter frame, thus greatly improving the practicality of the device in use. By setting a fixing groove, fixing rail, and positioning pin, the filter frame can be easily pulled out from the inside of the mounting plate by the cooperation of the two, making it easier and faster to replace the filter frame, thus greatly improving the convenience of the device in use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the overall structure of the guiding mechanism of this utility model;

[0015] Figure 3 This is a schematic diagram of the overall structure of the moving track of this utility model;

[0016] Figure 4 This is a schematic diagram of the overall structure of the positioning pin of this utility model;

[0017] Figure 5 This is a schematic diagram of the overall structure of the moving mechanism of this utility model.

[0018] The components are: 1. Filter chamber; 2. Filter frame; 3. Outlet; 4. Mounting chamber; 5. Servo motor; 6. Threaded rod; 7. Threaded sleeve; 8. Support plate; 9. Connecting rod; 10. Mounting plate; 11. Connecting plate; 12. Fixing groove; 13. Fixing rail; 14. Positioning pin; 15. Limiting rod; 16. Limiting sleeve; 17. Fixing plate; 18. Guide hole; 19. Guide rod. Detailed Implementation

[0019] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.

[0020] according to Figure 1 , 2 As shown in Figures 3, 4, and 5, this embodiment proposes a solid-liquid separation device for the regeneration of stainless steel mixed pickling waste acid, including a filter chamber 1. A filter frame 2 is installed inside the filter chamber 1. The filter frame 2 can be made of polytetrafluoroethylene, which has extremely strong chemical stability and is resistant to corrosion from mixed pickling waste acids such as nitric acid and hydrofluoric acid. An outlet 3 is installed at the lower side of one side of the filter chamber 1. An installation cavity 4 is installed at the front end of the filter chamber 1. A moving mechanism is provided inside the installation cavity 4. A guiding mechanism is provided at the rear end of the filter chamber 1.

[0021] The moving mechanism includes a servo motor 5, a threaded rod 6, a threaded sleeve 7, a support plate 8, a connecting rod 9, a mounting plate 10, a connecting plate 11, and a limiting structure. The servo motor 5 is mounted on one side below the mounting cavity 4. A threaded rod 6 is mounted on one side inside the mounting cavity 4. The output end of the servo motor 5 is connected to one end of the threaded rod 6. A threaded sleeve 7 is provided on the outer wall of the threaded rod 6. A support plate 8 is mounted on the front end of the threaded sleeve 7. A connecting rod 9 is mounted on the top end of the support plate 8. A connecting plate 11 is mounted on the bottom end of the connecting rod 9. A limiting structure is mounted on the outer side below the filter frame 2. Mounting plate 10 is bolted to connecting plate 11. In use, servo motor 5 is started to drive threaded rod 6 to rotate, which in turn drives threaded sleeve 7 to move. Under the limit of limit rod 15 and limit sleeve 16, threaded sleeve 7 drives support plate 8 and connecting rod 9 to move upward. Under the guidance of guide hole 18 and guide rod 19, connecting rod 9 drives filter frame 2 to move upward, removing filter frame 2 from inside filter chamber 1. At this time, large particles of impurities inside filter frame 2 can be conveniently discharged, thus greatly improving the practicality of the device in use.

[0022] The limiting structure includes a limiting rod 15 and a limiting sleeve 16. The limiting rod 15 is installed on one side inside the mounting cavity 4. The limiting sleeve 16 is provided on the outer side wall of the limiting rod 15. The front end of the limiting sleeve 16 is connected to the rear end of the support plate 8. The cross-section of the limiting rod 15 is smaller than the cross-section of the limiting sleeve 16. The limiting rod 15 and the limiting sleeve 16 form a sliding structure. In use, the mutual cooperation between the limiting rod 15 and the limiting sleeve 16 can limit the movement of the support plate 8, making the support plate 8 more stable when moving.

[0023] The mounting plate 10 has a fixing groove 12 inside, and a fixing rail 13 is provided inside the fixing groove 12. The top end of the fixing rail 13 is connected to the bottom end of the filter frame 2. A positioning pin 14 is installed at the bottom end of the fixing groove 12. In use, the positioning pin 14 is pulled out from inside the fixing groove 12, and then the filter frame 2 is pulled out from inside the mounting plate 10 with the cooperation of the fixing groove 12 and the fixing rail 13, so as to facilitate the disassembly of the filter frame 2. Then, with the cooperation of the fixing groove 12 and the fixing rail 13, a new filter frame 2 is easily installed. Finally, the position of the filter frame 2 is fixed by the positioning pin 14, which makes the replacement of the filter frame 2 more convenient and quick, thereby greatly improving the convenience of the device in use.

[0024] The guiding mechanism includes a fixed plate 17, a guide hole 18, and a guide rod 19. The fixed plate 17 is installed above the front end of the filter chamber 1. The guide hole 18 is opened through the interior of the fixed plate 17, and the guide rod 19 is installed through the interior of the guide hole 18. One end of the guide rod 19 is connected to the mounting plate 10 through a connecting plate 11. There are two guide rods 19 inside the fixed plate 17, and the two guide rods 19 are symmetrically distributed about the central axis of the fixed plate 17. In use, the guide hole 18 and the guide rod 19 cooperate with each other to guide the filter frame 2 when it moves, making the filter frame 2 more stable when it moves.

[0025] Working principle: The worker first pours the waste acid solution from pickling into the filter frame 2. The filter frame 2 then filters the waste acid solution, removing large particles. When it's time to discharge the large particles from the filter frame 2, the servo motor 5 is activated, driving the threaded rod 6 to rotate. This rotates the threaded sleeve 7, which, under the control of the limiting rod 15 and the limiting sleeve 16, moves the support plate 8 and connecting rod 9 upwards. Guided by the guide hole 18 and the guide rod 19, the connecting rod 9 then moves the filter... The filter frame 2 moves upward, removing it from the inside of the filter chamber 1. This allows for convenient discharge of large particles of impurities from inside the filter frame 2. When the filter frame 2 needs to be replaced, the operator pulls out the positioning pin 14 from the inside of the fixing groove 12. Then, with the cooperation of the fixing groove 12 and the fixing rail 13, the filter frame 2 is pulled out from the inside of the mounting plate 10 for easy disassembly. The new filter frame 2 is then easily installed using the cooperation of the fixing groove 12 and the fixing rail 13. Finally, the position of the filter frame 2 is fixed using the positioning pin 14.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A solid-liquid separation device for regenerating stainless steel mixed pickling waste acid, comprising a filter chamber (1), characterized in that: A filter frame (2) is installed inside the filter chamber (1), a water outlet (3) is installed on the lower side of one side of the filter chamber (1), an installation cavity (4) is installed at the front end of the filter chamber (1), a moving mechanism is provided inside the installation cavity (4), and a guiding mechanism is provided at the rear end of the filter chamber (1). The moving mechanism includes a servo motor (5), a threaded rod (6), a threaded sleeve (7), a support plate (8), a connecting rod (9), a mounting plate (10), a connecting plate (11), and a limiting structure. The servo motor (5) is installed on one side below the mounting cavity (4). The threaded rod (6) is installed on one side inside the mounting cavity (4). The output end of the servo motor (5) is connected to one end of the threaded rod (6). The outer wall of the threaded rod (6) is provided with a threaded sleeve (7). The front end of the threaded sleeve (7) is installed with a support plate (8). The top end of the support plate (8) is installed with a connecting rod (9). The bottom end of the connecting rod (9) is installed with a connecting plate (11). The outer side below the filter frame (2) is installed with a mounting plate (10). The mounting plate (10) and the connecting plate (11) are connected by bolts.

2. The solid-liquid separation device for regenerating stainless steel mixed pickling waste acid according to claim 1, characterized in that: The limiting structure includes a limiting rod (15) and a limiting sleeve (16). The limiting rod (15) is installed on one side inside the mounting cavity (4). The outer wall of the limiting rod (15) is provided with a limiting sleeve (16). The front end of the limiting sleeve (16) is connected to the rear end of the support plate (8).

3. The solid-liquid separation device for regenerating stainless steel mixed pickling waste acid according to claim 2, characterized in that: The cross-section of the limiting rod (15) is smaller than the cross-section of the limiting sleeve (16), and the limiting rod (15) and the limiting sleeve (16) form a sliding structure.

4. A solid-liquid separation device for regenerating stainless steel mixed pickling waste acid according to claim 3, characterized in that: The mounting plate (10) has a fixing groove (12) inside, and a fixing rail (13) is provided inside the fixing groove (12). The top end of the fixing rail (13) is connected to the bottom end of the filter frame (2), and a positioning pin (14) is installed at the bottom end of the fixing groove (12).

5. A solid-liquid separation device for regenerating stainless steel mixed pickling waste acid according to claim 1, characterized in that: The guiding mechanism includes a fixed plate (17), a guide hole (18) and a guide rod (19). The fixed plate (17) is installed above the front end of the filter chamber (1). The guide hole (18) is opened through the interior of the fixed plate (17). The guide rod (19) is installed through the interior of the guide hole (18). One end of the guide rod (19) is connected to the mounting plate (10) through a connecting plate (11).

6. A solid-liquid separation device for regenerating stainless steel mixed pickling waste acid according to claim 5, characterized in that: There are two guide rods (19) inside the fixed plate (17), and the two guide rods (19) are symmetrically distributed about the central axis of the fixed plate (17).

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