Circulating type hot galvanizing pickling tank

Abstract

The utility model discloses a circulating hot galvanizing pickling tank which comprises a frame body and a pickling tank body, the pickling tank body is arranged at the top of the frame body, a liquid discharging hopper is arranged at the bottom of the pickling tank body, a first liquid discharging pipe is arranged in the center of the bottom of the liquid discharging hopper, and a first electric valve is arranged at the top of the first liquid discharging pipe. The bottom of the first liquid discharge pipe penetrates through an accumulation pool arranged at the bottom of the frame body and is communicated with a waste discharge pipe arranged in the center of the bottom of the frame body, a second electric valve is arranged at the front end of the waste discharge pipe, overflow pipes are arranged in the middles of the left end and the right end of the first liquid discharge pipe respectively, filtering parts are arranged in the middles of the overflow pipes respectively, and filtering nets are arranged on the inner sides of the filtering parts respectively; according to the circulating type hot galvanizing pickling tank, cyclic utilization of pickling liquid is achieved, the production cost is reduced, and the purity of the pickling liquid and the circulating stability are ensured through efficient filtering and intelligent monitoring.

Description

Technical Field

[0001] The utility model relates to the technical field of hot-dip galvanizing pickling, in particular to a circulating hot-dip galvanizing pickling tank. Background Technique

[0002] In the hot-dip galvanizing process, the pickling tank is an indispensable and important device. It is mainly used to remove oxides and rust on the metal surface to provide a clean metal surface for subsequent galvanizing treatment. However, after the pickling in the traditional hot-dip galvanizing pickling tank is completed, the pickling solution containing a large amount of solid waste and impurities will affect the purity and pickling effect of the pickling solution, reduce the cleanliness of the metal surface, and thus affect the adhesion and quality of the galvanized layer.

[0003] At present, in order to maintain the purity and pickling effect of the pickling solution, the traditional method is to replace the pickling solution regularly. However, this method not only wastes a large amount of pickling solution, increases the production cost, but also causes certain pollution to the environment due to the frequent replacement of the pickling solution. Therefore, we propose a circulating hot-dip galvanizing pickling tank. Content of the Utility Model

[0004] In view of the problems existing in the prior art, the utility model discloses a circulating hot-dip galvanizing pickling tank. The technical scheme adopted is that it includes a frame body and a pickling tank. The pickling tank is arranged at the top of the frame body. A drain hopper is arranged at the bottom of the pickling tank. A first drain pipe is arranged at the center of the bottom of the drain hopper. A first electric valve is arranged at the top of the first drain pipe. The bottom of the first drain pipe passes through a storage tank arranged at the bottom of the frame body and is communicated with a waste drain pipe arranged at the center of its bottom. A second electric valve is arranged at the front end of the waste drain pipe. The middle parts of the left and right ends of the first drain pipe are respectively provided with overflow pipes. Filtering parts are respectively arranged in the middle of the overflow pipes. Filter meshes are respectively arranged inside the filtering parts. Overflow boxes are respectively arranged at the tops of the overflow pipes. Overflow platforms are respectively arranged at one ends of the overflow boxes far away from the tops of the overflow pipes, and second drain pipes are respectively arranged downward at the centers of the tops of the overflow platforms. Detection units are respectively arranged inside the second drain pipes. A circulating unit is arranged at the rear end of the frame body. The liquid discharge end of the circulating unit is communicated with the rear top of the pickling tank.

[0005] As a preferred technical solution of the present utility model, the detection unit includes a rotating shaft, fan blades, a first gear, a second gear and an encoder. The rotating shaft is rotatably installed at the top of the second drain pipe respectively. Three fan blades are arranged in an equidistant circumferential array in the middle of the rotating shaft. A first gear is fixedly installed at one end of the rotating shaft close to the top of the storage pool respectively. An encoder is arranged below the first gear respectively. The encoder is fixedly installed at the top of the storage pool respectively. A second gear is fixedly installed at the end of the input shaft of the encoder respectively. The second gear meshes with the teeth on the first gear respectively. The design of the detection unit enables the system to monitor the flow rate of the pickling solution in real time and accurately. Through the rotational movement generated by the fan blades on the rotating shaft when the pickling solution flows, combined with the meshing transmission of the first gear, the second gear and the encoder, the encoder can accurately calculate the number of rotations of the rotating shaft, and thus indirectly measure the flow rate or total amount of the pickling solution.

[0006] As a preferred technical solution of the present utility model, the circulation unit includes a pump body, a first return pipe, a liquid extraction pipe, a liquid delivery pipe and a second return pipe. The pump body is arranged at the bottom of the rear end of the frame. The liquid inlet end of the pump body is provided with a liquid extraction pipe. The other end of the liquid extraction pipe is communicated with the inside of the first return pipe arranged at the bottom of the rear side of the storage pool. The liquid discharge end of the pump body is provided with a liquid delivery pipe. The other end of the liquid delivery pipe is communicated with the second return pipe arranged at the top of the rear side of the pickling pool. The first return pipe and the second return pipe are U-shaped pipes. The left and right ends of the first return pipe are communicated with the bottom of the rear side of the storage pool respectively. The left and right ends of the second return pipe are communicated with the top of the rear side of the pickling pool respectively. The design of the circulation unit enables the pickling solution to be recycled efficiently and stably. Driven by the pump body, the pickling solution is pumped back into the pickling pool from the storage pool through the first return pipe, the liquid extraction pipe, the liquid delivery pipe and the second return pipe.

[0007] As a preferred technical solution of the present utility model, it further includes baffles. There are two baffles, which are fixedly installed at the left and right ends of the top of the trapezoidal platform arranged at the inner bottom of the storage pool respectively. The setting of the baffles enables the storage pool to more effectively accommodate the pickling solution discharged from the pickling pool.

[0008] As a preferred technical solution of the present utility model, a liquid level sensor is fixedly installed at the center of the top of the rear side inside the pickling pool. The design of the liquid level sensor can monitor the change of the liquid level in the pickling pool in real time, enabling the user to timely understand the remaining amount of the pickling solution. In addition, the data of the liquid level sensor can be combined with the data of the encoder and comprehensively analyzed through the controller, so as to judge the blockage condition of the filter screen and realize the automatic cleaning function.

[0009] As a preferred technical solution of the present utility model, it further includes a controller which is fixedly installed at the front end on the right side of the pickling tank. The output end of the controller is electrically connected to the input ends of the pump body, the first electric valve and the second electric valve, and the input end of the controller is electrically connected to the output ends of the encoder, the liquid level sensor and the external power supply. As the core component of the entire system, the controller realizes the precise control of the pump body, the first electric valve and the second electric valve, and realizes the comprehensive monitoring and adjustment of the acid pickling solution circulation treatment system.

[0010] The beneficial effects of the present utility model: Through the operation of the pump body, the acid pickling solution in the storage tank is extracted through the liquid suction pipe and the first return pipe at its liquid inlet end, and then is pumped back into the pickling tank through the liquid delivery pipe and the second return pipe. This design enables the acid pickling solution to be recycled, thus significantly reducing the consumption of the acid pickling solution and lowering the production cost.

[0011] Through the design of the filter screen, solid wastes and impurities in the acid pickling solution are effectively removed, ensuring the purity of the acid pickling solution and the pickling effect. In addition, by real-time monitoring of the flow data detected by the encoder and the liquid level change in the pickling tank measured by the liquid level sensor, the controller can accurately grasp the flow of the acid pickling solution and the liquid level in the pickling tank. When the filter screen is blocked due to long-term use, the controller can automatically judge and start the "backwashing" function, and effectively remove the blockage on the filter screen by changing the flow direction of the acid pickling solution, ensuring the continuous and stable operation of the device.

[0012] In summary, the circulating hot-dip galvanizing pickling tank not only realizes the recycling of the acid pickling solution and reduces the production cost, but also ensures the purity of the acid pickling solution and the stability of the circulation through efficient filtration and intelligent monitoring. Description of the Drawings

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

[0014] Figure 2 is a schematic diagram of the bottom view structure of the present utility model;

[0015] Figure 3 is a schematic diagram of the sectional structure of the present utility model;

[0016] Figure 4 is a schematic diagram of the partial enlarged structure at A of the present utility model.

[0017] In the figure: 1. Frame; 2. Pickling tank; 3. Controller; 4. Drain hopper; 5. Detection unit; 51. Rotating shaft; 52. Fan blade; 53. First gear; 54. Second gear; 55. Encoder; 6. Circulation unit; 61. Pump body; 62. First return pipe; 63. Liquid extraction pipe; 64. Liquid supply pipe; 65. Second return pipe; 7. First drain pipe; 8. Overflow pipe; 9. Filtering part; 10. Filter screen; 11. Waste discharge pipe; 12. Overflow tank; 13. Second drain pipe; 14. Storage pond; 15. First electric valve; 16. Second electric valve; 17. Baffle; 18. Liquid level sensor. Detailed implementation manner

[0018] Example 1

[0019] As Figures 1 to 4As shown in the figure, the utility model discloses a circulating hot-dip galvanizing pickling tank. The adopted technical solution is as follows: it includes a frame body 1 and a pickling tank 2. A pickling tank 2 is arranged at the top of the frame body 1. A liquid level sensor 18 is fixedly installed at the center of the top of the rear side inside the pickling tank 2. The liquid level sensor 18 can detect the liquid level of the pickling solution inside the pickling tank 2 in real time. A drain hopper 4 is arranged at the bottom of the pickling tank 2. A first drain pipe 7 is arranged at the center of the bottom of the drain hopper 4. A first electric valve 15 is arranged at the top of the first drain pipe 7. The bottom of the first drain pipe 7 passes through a storage tank 14 arranged at the bottom of the frame body 1 and is communicated with a waste drain pipe 11 arranged at the center of its bottom. It also includes baffles 17. There are two baffles 17, and the baffles 17 are respectively fixedly installed at the left and right ends of the top of a trapezoidal platform arranged at the inner bottom of the storage tank 14. Between the baffle 17 and the inner wall of the storage tank 14, it can accommodate the pickling solution discharged from the pickling tank 2. A second electric valve 16 is arranged at the front end of the waste drain pipe 11. Overflow pipes 8 are respectively arranged in the middle parts of the left and right ends of the first drain pipe 7. Filtering parts 9 are respectively arranged in the middle parts of the overflow pipes 8. Filter meshes 10 are respectively arranged inside the filtering parts 9. Overflow boxes 12 are respectively arranged at the tops of the overflow pipes 8. Overflow platforms are respectively arranged at one end of the overflow boxes 12 far from the top of the overflow pipes 8, and second drain pipes 13 are respectively arranged downward at the centers of the tops of the overflow platforms. Detection units 5 are respectively arranged inside the second drain pipes 13. The detection unit 5 includes a rotating shaft 51, fan blades 52, a first gear 53, a second gear 54 and an encoder 55. The rotating shafts 51 are respectively rotatably installed at the tops of the second drain pipes 13. Three fan blades 52 are arranged at equal intervals in a circumferential array in the middle of the rotating shafts 51. First gears 53 are respectively fixedly installed at one ends of the rotating shafts 51 close to the top of the storage tank 14. Encoders 55 are respectively arranged below the first gears 53. The encoders 55 are respectively fixedly installed at the top of the storage tank 14. Second gears 54 are respectively fixedly installed at the end parts of the input shafts of the encoders 55. The second gears 54 are respectively meshed with the teeth on the first gears 53. The pickling solution flowing through the second drain pipes 13 will drive the fan blades 52 to drive the rotating shafts 51 to rotate. This rotational movement is transmitted to the encoder 55 through the meshing of the first gear 53 and the second gear 54, so that the encoder 55 can detect and calculate the number of rotations of the rotating shaft 51, and thus can indirectly measure the flow rate or total amount of the pickling solution passing through the second drain pipes 13. When the flow rate is lower than the set value, at this time, the controller 3 can combine the liquid level sensor 18 to judge the speed of the liquid level drop in the pickling tank 2, so as to determine whether the filter mesh 10 is blocked. A circulating unit 6 is arranged at the rear end of the frame body 1. The drain end of the circulating unit 6 is communicated with the top of the rear side of the pickling tank 2. The circulating unit 6 includes a pump body 61, a first return pipe 62, a liquid extraction pipe 63, a liquid delivery pipe 64 and a second return pipe 65. The pump body 61 is arranged at the bottom of the rear end of the frame body 1. The liquid inlet end of the pump body 61 is provided with a liquid extraction pipe 63. The other end of the liquid extraction pipe 63 is communicated with the inside of a first return pipe 62 arranged at the rear bottom of the storage tank 14. The liquid outlet end of the pump body 61 is provided with a liquid delivery pipe 64.The other end of the liquid delivery pipe 64 is communicated with a second return pipe 65 arranged at the top of the rear side of the pickling tank 2. The first return pipe 62 and the second return pipe 65 are U-shaped pipes. The left and right ends of the first return pipe 62 are respectively communicated with the bottom of the rear side of the storage tank 14. The left and right ends of the second return pipe 65 are respectively communicated with the top of the rear side of the pickling tank 2. By operating the pump body 61, the acid cleaning solution in the storage tank 14 is extracted through the liquid suction pipe 63 and the first return pipe 62 at its liquid inlet end, and then is pumped back into the pickling tank 2 through the liquid delivery pipe 64 and the second return pipe 65 to achieve recycling. It further includes a controller 3. The controller 3 is fixedly installed at the front end of the right side of the pickling tank 2. The output end of the controller 3 is electrically connected to the input ends of the pump body 61, the first electric valve 15 and the second electric valve 16. The input end of the controller 3 is electrically connected to the output ends of the encoder 55, the liquid level sensor 18 and an external power supply.,

[0020] The working principle of the present utility model: After the acid cleaning solution is used in the pickling tank 2, it needs to be recycled to remove solid waste and impurities therein. By opening the first electric valve 15 through the controller 3, after the first electric valve 15 is opened, the acid cleaning solution flows into the overflow pipes 8 on both sides through the first drain pipe 7 at the bottom of the drain hopper 4. When the acid cleaning solution passes through the filter screen 10 in the filtering part 9, the filter screen 10 can filter the solid waste and impurities in the acid cleaning solution. The filtered acid cleaning solution continues to flow to the overflow tank 12. In the overflow tank 12, if the liquid level exceeds the height of the overflow platform, the acid cleaning solution will flow into the storage tank 14 through the second drain pipe 13. Between the baffles 17 at the left and right ends of the trapezoidal platform at the inner bottom of the storage tank 14 and the inner wall of the storage tank 14, the acid cleaning solution discharged from the pickling tank 2 can be accommodated. By starting the pump body 61, the liquid suction pipe 63 extracts the acid cleaning solution in the storage tank 14 through the first return pipe 62, and then is pumped back into the pickling tank 2 through the liquid delivery pipe 64 and the second return pipe 65 to achieve recycling. The acid cleaning solution flowing through the second drain pipe 13 will drive the fan blade 52 to drive the rotating shaft 51 to rotate. This rotational movement is transmitted to the encoder 55 through the meshing of the first gear 53 and the second gear 54, so that the encoder 55 can detect and calculate the number of rotations of the rotating shaft 51, thereby indirectly measuring the flow rate or total amount of the acid cleaning solution passing through the second drain pipe 13. When the flow rate is lower than the set value, at this time, the controller 3 can combine the liquid level sensor 18 to judge the speed of the liquid level drop in the pickling tank 2, so as to determine whether the filter screen 10 is blocked. When the filter screen 10 is blocked, at this time, the controller 3 closes the first electric valve 15 and then opens the second electric valve 16, so that the acid cleaning solution in the overflow tank 12 and above the filtering part 9 can "backwash" the filter screen 10, that is, the acid cleaning solution flows through the other side of the filter screen, and the blocked impurities are discharged from the waste discharge pipe 11.,

[0021] The circuit connection involved in the present utility model is a common means adopted by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments, belonging to the widely used prior art.,

[0022] Components not described in detail in this article are prior art.

[0023] Although the specific embodiments of the present utility model have been described in detail above, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the gist of the present utility model, and modifications or deformations that do not involve creative labor are still within the protection scope of the present utility model.

Claims

1. A cyclic hot-dip galvanizing pickling tank, comprising a frame body (1) and a pickling tank (2), characterized in that, A pickling tank (2) is provided at the top of the frame body (1). A liquid discharge hopper (4) is provided at the bottom of the pickling tank (2). A first liquid discharge pipe (7) is provided at the center of the bottom of the liquid discharge hopper (4). A first electric valve (15) is provided at the top of the first liquid discharge pipe (7). The bottom of the first liquid discharge pipe (7) passes through a storage tank (14) provided at the bottom of the frame body (1) and is communicated with a waste discharge pipe (11) provided at the center of its bottom. A second electric valve (16) is provided at the front end of the waste discharge pipe (11). Overflow pipes (8) are respectively provided in the middle of the left and right ends of the first liquid discharge pipe (7). Filter parts (9) are respectively provided in the middle of the overflow pipes (8). Filter nets (10) are respectively provided inside the filter parts (9). Overflow tanks (12) are respectively provided at the top ends of the overflow pipes (8). Overflow platforms are respectively provided at one end of the inside of the overflow tank (12) far from the top of the overflow pipe (8), and second liquid discharge pipes (13) are respectively provided downward at the center of the top of the overflow platform. Detection units (5) are respectively provided inside the second liquid discharge pipes (13). A circulation unit (6) is provided at the rear end of the frame body (1). The liquid discharge end of the circulation unit (6) is communicated with the rear top of the pickling tank (2).

2. The circulating hot-dip galvanizing pickling tank according to claim 1, characterized in that: The detection unit (5) includes a rotating shaft (51), fan blades (52), a first gear (53), a second gear (54) and an encoder (55). The rotating shafts (51) are respectively rotatably installed at the top of the second liquid discharge pipes (13). Three fan blades (52) are equidistantly arranged in a circumferential array in the middle of the rotating shaft (51). A first gear (53) is respectively fixedly installed at one end of the rotating shaft (51) close to the top of the storage tank (14). Encoders (55) are respectively provided below the first gears (53). The encoders (55) are respectively fixedly installed at the top of the storage tank (14). Second gears (54) are respectively fixedly installed at the end parts of the input shafts of the encoders (55). The second gears (54) are respectively meshed with the teeth on the first gears (53).

3. A cyclic hot-dip galvanizing pickling bath according to claim 1, characterized in that: The circulation unit (6) includes a pump body (61), a first return pipe (62), a liquid extraction pipe (63), a liquid supply pipe (64) and a second return pipe (65). The pump body (61) is provided at the bottom of the rear end of the frame body (1). A liquid extraction pipe (63) is provided at the liquid inlet end of the pump body (61). The other end of the liquid extraction pipe (63) is communicated with the inside of a first return pipe (62) provided at the rear bottom of the storage tank (14). A liquid supply pipe (64) is provided at the liquid discharge end of the pump body (61). The other end of the liquid supply pipe (64) is communicated with a second return pipe (65) provided at the rear top of the pickling tank (2). The first return pipe (62) and the second return pipe (65) are U-shaped pipes. The left and right ends of the first return pipe (62) are respectively communicated with the rear bottom of the storage tank (14). The left and right ends of the second return pipe (65) are respectively communicated with the rear top of the pickling tank (2).

4. A circulating hot-dip galvanizing pickling tank according to claim 1, characterized in that: It further includes baffles (17), there are two of the baffles (17), and the baffles (17) are respectively fixedly installed at the left and right ends of the top of the trapezoidal platform arranged at the inner bottom of the storage pond (14).

5. The circulating hot-dip galvanizing pickling tank according to claim 1, characterized in that: A liquid level sensor (18) is fixedly installed at the center of the top of the rear side inside the pickling tank (2).

6. A circulating hot-dip galvanizing pickling tank according to claim 1, characterized in that: It further includes a controller (3), the controller (3) is fixedly installed at the front end on the right side of the pickling tank (2), the output end of the controller (3) is electrically connected to the input ends of the pump body (61), the first electric valve (15) and the second electric valve (16), and the input end of the controller (3) is electrically connected to the output ends of the encoder (55), the liquid level sensor (18) and an external power supply.

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