An acid pickling and purging device for wire pre-treatment

Abstract

The present invention relates to a pickling and purging device for wire pre-treatment, including a pickling tank and a purger. The purger is small in volume, and the gap between the die core sleeve and the outer wall of the wire is small. When passing through compressed air, the purging force can be increased to make the purging more thorough. The purger is connected by fastening bolts, saving costs and facilitating the maintenance and replacement of parts. A reducer is also provided, which can quickly reduce the air flow rate and pressure blown out by the purger, and reduce the pickling solution carried in the air flow, avoiding the splashing of the pickling solution due to the impact of compressed air, and preventing the pickling solution from contaminating the bodies and work clothes of the staff, ensuring the personal safety of the staff. Two-color coating layers are applied on the outer peripheral wall of the indicating cap. When the purger works, the air flow overflowing from the purger will push the indicating cap to rotate. The operator can observe the rotation speed of the indicating cap to understand whether the purging device is working and whether the working state is smooth, and quickly understand the operating state of the equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of wire pickling, and particularly to a pickling and blowing device for wire pretreatment. Background Art

[0002] The method of using an acid solution to remove the scale and rust on the surface of a wire is called pickling, and pickling is a method of cleaning the metal surface. Generally, the wire is immersed in an aqueous solution such as sulfuric acid or hydrochloric acid to remove the oxide film on the metal surface, which is a pretreatment or intermediate treatment procedure for processes such as electroplating and rolling.

[0003] After pickling, it is necessary to remove the acid solution on the surface of the wire and enter the water washing stage. In order to remove the acid solution carried out during wire pickling, it is necessary to blow the wire. The existing wire blowing devices are large in volume, insufficient in blowing force, and not easy to replace and repair. Summary of the Invention

[0004] To solve the problems of the existing wire blowing device being large in volume, insufficient in blowing force, and not easy to replace and repair, the present invention provides a pickling and blowing device for wire pretreatment, aiming to reduce the volume of the blowing device, increase the blowing force, facilitate maintenance and replacement, and at the same time avoid the problem of acid solution splashing after blowing.

[0005] To achieve the above object, the technical solution of the present invention is as follows:

[0006] A pickling and blowing device for wire pretreatment, comprising a pickling tank. The upper part of the left side wall of the pickling tank is provided with a wire inlet, and the upper part of the right side wall is provided with a wire outlet corresponding to the wire inlet. Both the wire inlet and the wire outlet are circular holes. The pickling tank is filled with pickling solution, and a blower is installed on the outer wall of the right side of the pickling tank outside the wire outlet;

[0007] The blower includes a blower housing, a die core sleeve, a die core, and an end cap. The blower housing is a hollow cylinder with an open left end. The upper part of the middle of the outer peripheral wall of the blower housing is provided with a threaded hole penetrating through the inner and outer peripheral walls of the blower housing. A trachea joint is connected in the threaded hole, and the outer end of the trachea joint is connected with a trachea. The right end of the blower housing is provided with a first circular through hole penetrating through the inner and outer walls on the right side of the blower housing. The left end of the outer peripheral wall of the blower housing is provided with a first connecting plate. The first connecting plate is an annular plate body. The inner ring surface of the first connecting plate is connected to the left end of the outer peripheral wall of the blower housing, and a plurality of first bolt holes are annularly arranged on the first connecting plate;

[0008] A die core sleeve is arranged inside the purging housing. The die core sleeve is a tube body with an outer diameter matching the inner diameter of the purging housing. The inner diameter of the die core sleeve is the same as the diameter of the first circular through-hole. The length of the die core sleeve is less than the distance between the left end of the purging housing and the right inner wall of the purging housing. An annular groove is arranged in the middle of the outer peripheral wall of the die core sleeve. There are intervals between the left and right ends of the annular groove and the left and right ends of the die core sleeve respectively. The annular groove is communicated with the air pipe joint. A first circular counterbore that is recessed into the die core sleeve and has an opening to the left is coaxially arranged on the left end face of the die core sleeve. The diameter of the first circular counterbore is greater than the inner diameter of the die core sleeve and less than the outer diameter of the die core sleeve. A second circular counterbore that has an opening to the left and is recessed towards the die core sleeve to the right is coaxially arranged on the right end face of the first circular counterbore. The diameter of the second circular counterbore is greater than the inner diameter of the die core sleeve and less than the diameter of the first circular counterbore. A plurality of inclined air vents are annularly arrayed on the inner peripheral wall of the second circular counterbore. The air vents are circular through-holes. The left end of the air vent is internally communicated with the second circular counterbore, and the right end is externally communicated with the annular groove. A third circular counterbore that is recessed into the die core sleeve and has an opening to the right is coaxially arranged on the right end face of the die core sleeve. The diameter and depth of the third circular counterbore are the same as the diameter and depth of the first circular counterbore respectively;

[0009] Die cores are installed in both the third circular counterbore and the first circular counterbore. The die cores are annular bodies. The outer diameter of the die cores matches the diameters of the first circular counterbore and the third circular counterbore, and the inner diameter is less than the diameter of the first circular through-hole. The length of the die cores matches the depths of the first circular counterbore and the third circular counterbore. A end cover is connected to the left end of the purging housing. The end cover is a circular plate body with a diameter the same as the outer diameter of the first connecting plate. A top plate is coaxially arranged on the right side face of the end cover. The top plate is a circular plate body with a diameter matching the inner diameter of the purging housing. A plurality of second bolt holes penetrating the left and right side faces of the end cover are annularly arrayed on the end cover. The plurality of second bolt holes are opposite to the plurality of first bolt holes left and right. A second circular through-hole that sequentially penetrates the left side face of the end cover and the right side face of the top plate is arranged at the center of the end cover and the top plate. The second circular through-hole has the same diameter as the first circular through-hole and is opposite to it left and right. The top plate is located inside the purging housing and presses against the die core sleeve and the die cores;

[0010] A plurality of third bolt holes are annularly arrayed on the right side wall of the pickling tank outside the wire outlet. The purging housing and the end cover are connected to the right outer wall of the pickling tank by fastening bolts passing through the first bolt holes, the second bolt holes and the third bolt holes.

[0011] Furthermore, the inner ring surface of the die core and the left and right end faces of the die core are smoothly transitioned.

[0012] Further, the purging housing is a hollow cylinder with an open left end made of PP or polytetrafluoroethylene, the die core sleeve is a tube made of PP or polytetrafluoroethylene, the end cap is a circular plate made of PP or polytetrafluoroethylene, and the die core is a toroidal body made of alloy material, and the inner ring surface of the die core is a smooth surface.

[0013] Further, a reducer is arranged in the right part of the pickling tank. The reducer includes an outer tube, an indicating cap, an inner tube and a connecting tube. The outer tube is a circular tube body with open upper and lower ends. The central axis of the outer tube is located in front of the central axis of the wire outlet. A circular wire hole horizontally penetrating the inner and outer peripheral walls of the outer tube from left to right is arranged on the left part of the rear peripheral wall of the outer tube. The wire hole is coaxial with the wire outlet. The lower end of the outer tube extends below the liquid level of the pickling solution, and there is a gap between the lower end of the outer tube and the inner bottom surface of the pickling tank. A partition plate located above the liquid level of the pickling solution is arranged in the lower part of the outer tube. The partition plate is a circular plate body. The outer edge of the partition plate is connected to the inner wall of the outer tube, and the middle part protrudes upward. A plurality of first through holes penetrating the upper and lower surfaces of the partition plate are evenly distributed on the partition plate. The upper end of the outer wall of the outer tube is rotatably connected with an indicating cap. The indicating cap is a hollow cylinder with an open lower end. A plurality of inclined strip-shaped through holes penetrating the inner and outer peripheral walls of the indicating cap are annularly arranged on the peripheral wall of the indicating cap. The radial inclination direction of the strip-shaped through holes is in a counterclockwise state along the circumferential direction of the indicating cap. The lower end of the inner peripheral wall of the indicating cap is connected to the upper end of the outer peripheral wall of the outer tube through a bearing. An inner tube is coaxially arranged inside the outer tube. The inner tube is a circular tube body with open upper and lower ends. The rear end of the inner tube is located in front of the central axis of the wire hole. There is a gap between the lower end of the inner tube and the upper surface of the partition plate. A baffle is arranged on the upper part of the outer peripheral wall of the inner tube. The baffle is a circular ring plate body. The lower surface of the baffle is higher than the wire outlet. The inner ring surface of the baffle is connected to the upper part of the outer peripheral wall of the inner tube, and the outer ring surface of the baffle is connected to the upper part of the inner peripheral wall of the outer tube. A second through hole penetrating the upper and lower surfaces of the baffle and located above the right side of the wire hole is arranged on the right part of the baffle. A plurality of connecting rods are annularly arranged on the lower part of the outer peripheral wall of the inner tube. The outer ends of the connecting rods are connected to the inner peripheral wall of the outer tube. The connecting tube is a circular tube body with a lower left end and a higher right end. The inner diameter of the connecting tube is larger than the diameter of the wire hole. The left end of the connecting tube communicates with the right rear part of the outer tube. The upper end of the inner peripheral wall of the left end of the connecting tube is flush with the upper end of the wire hole. The lower end of the inner peripheral wall of the right end of the connecting tube is flush with the lower end of the wire hole. The right end of the outer peripheral wall of the connecting tube is connected with a second connecting plate. The second connecting plate is a circular ring plate body. The second connecting plate is sleeved on the right end of the outer peripheral wall of the connecting tube. The right end surface of the second connecting plate is aligned with the right end of the connecting tube. The outer diameter of the second connecting plate is the same as the outer diameter of the first connecting plate. A plurality of fourth bolt holes are annularly arranged on the second connecting plate. The fastening bolt passes through the fourth bolt hole to connect the reducer to the right inner wall of the pickling tank.

[0014] Further, a coating layer is coated on the outer peripheral wall of the indicating cap. The coating layer is a vertical strip-shaped color area formed by alternately arranging coating layers of two colors on the outer peripheral wall of the indicating cap.

[0015] Further, the paint layers of the two colors are respectively a red paint layer and a blue paint layer.

[0016] Further, the outer end of the strip-shaped through hole inclines downward, the upper end of the strip-shaped through hole is lower than the upper end of the pickling tank, and the upper end of the indicating cap is higher than the upper end of the pickling tank.

[0017] Further, the outer tube is a circular tube body made of PP, the indicating cap is a hollow cylinder with an open lower end made of PP, the inner tube is a circular tube body made of PP, and the connecting tube is a circular tube body with its left end lower than its right end made of PP.

[0018] Further, a spiral blade is arranged inside the inner tube. The spiral blade is coiled around the central column. The central column is a cylinder with a diameter smaller than the inner diameter of the inner tube and coaxial with the inner tube. The outer edge of the spiral blade is connected to the inner peripheral wall of the inner tube. The spiral blade and the central column divide the space inside the inner tube into a spiral cavity.

[0019] Further, the upper and lower ends of the spiral blade are respectively flush with the upper and lower ends of the inner tube.

[0020] By the above technical solutions, the beneficial effects of the present invention are as follows:

[0021] The purging device of the present invention is small in volume, and the gap between the die core sleeve and the outer wall of the steel wire is small. When passing through compressed air, the purging force can be increased, making the purging more thorough. The purging device is small in volume, saving costs, facilitating maintenance and replacement of parts, and being convenient for installation. The number of purging devices can be adjusted according to the number of pickled steel wires, effectively reducing the waste of compressed air and ensuring the pressure and purging effect of the compressed air.

[0022] The purging housing, die core sleeve and cover plate of the purging device of the present invention are all made of PP or polytetrafluoroethylene, which is corrosion-resistant. The die core is made of alloy, which can guide and restrict the steel wire, protect the purging housing, die core sleeve and cover plate from wear, and extend the service life.

[0023] The present invention is provided with a reducer, which can quickly reduce the air flow velocity and pressure blown out by the purging device, reduce the pickling solution carried in the air flow, avoid the splashing of the pickling solution due to the impact of compressed air, avoid the pickling solution from contaminating the bodies and work clothes of the staff, and ensure the personal safety of the staff.

[0024] The outer peripheral wall of the indicating cap of the present invention is coated with a paint layer. The paint layer has two colors. When the purging device is working, the air flow overflowing from the purging device will push the indicating cap to rotate. The operator only needs to observe the rotation speed of the indicating cap to know whether the purging device is working and whether the working state is smooth, and quickly understand the operating state of the equipment. Description of the Drawings

[0025] Figure 1 is the main sectional view of the present invention (longitudinal section at the rear side of the inner tube);

[0026] Figure 2 is the main sectional view of the purger of the present invention;

[0027] Figure 3 is the schematic structural view of the reducer of the present invention;

[0028] Figure 4 is Figure 3 the sectional view taken along the line A-A of

[0029] Figure 5 is Figure 3 the sectional view taken along the line B-B of

[0030] Figure 6 is Figure 3 the sectional view taken along the line C-C of

[0031] Figure 7 is Figure 6 the sectional view taken along the line D-D of

[0032] Figure 8 is the usage state diagram of the present invention.

[0033] The reference numerals in the drawings are: 1 is the pickling tank, 2 is the purger, 3 is the fastening bolt, 4 is the reducer, 11 is the wire inlet, 12 is the wire outlet, 13 is the pickling solution, 21 is the purging housing, 22 is the die core sleeve, 23 is the die core, 24 is the end cap, 41 is the outer tube, 42 is the indicating cap, 43 is the inner tube, 44 is the connecting pipe, 211 is the air pipe joint, 212 is the air pipe, 213 is the first circular through hole, 214 is the first connecting plate, 221 is the annular groove, 222 is the first circular counterbore, 223 is the second circular counterbore, 224 is the third circular counterbore, 225 is the ventilation hole, 241 is the top plate, 411 is the wire hole, 412 is the partition plate, 421 is the strip-shaped through hole, 422 is the bearing, 431 is the baffle plate, 432 is the second through hole, 433 is the connecting rod, 434 is the spiral blade, 435 is the central column, 441 is the second connecting plate. Detailed implementation manners

[0034] The present invention will be further described below in conjunction with the drawings and specific implementation manners:

[0035] As Figures 1 to 8 shown, a pickling and purging device for wire pretreatment includes a pickling tank 1. The upper part of the left side wall of the pickling tank 1 is provided with a wire inlet 11, and the upper part of the right side wall is provided with a wire outlet 12 corresponding to the wire inlet 11. Both the wire inlet 11 and the wire outlet 12 are circular holes. The pickling tank 1 is filled with a pickling solution 13. A purger 2 is installed on the outer wall of the right side of the pickling tank 1 outside the wire outlet 12;

[0036] The purger 2 includes a purge housing 21, a die core sleeve 22, a die core 23 and an end cap 24. The purge housing 21 is a hollow cylinder with an open left end. At the upper middle part of the outer peripheral wall of the purge housing 21, there is a threaded hole penetrating through the inner and outer peripheral walls of the purge housing 21. A trachea connector 211 is connected in the threaded hole. The outer end of the trachea connector 211 is connected to a trachea 212. At the right end of the purge housing 21, there is a first circular through hole 213 penetrating through the inner and outer walls on the right side of the purge housing 21. At the left end of the outer peripheral wall of the purge housing 21, there is a first connecting plate 214. The first connecting plate 214 is an annular plate body. The inner ring surface of the first connecting plate 214 is connected to the left end of the outer peripheral wall of the purge housing 21. A plurality of first bolt holes are annularly arrayed on the first connecting plate 214;

[0037] The die core sleeve 22 is arranged inside the purge housing 21. The die core sleeve 22 is a tube whose outer diameter matches the inner diameter of the purge housing 21. The inner diameter of the die core sleeve 22 is the same as the diameter of the first circular through hole 213. The length of the die core sleeve 22 is less than the distance between the left end of the purge housing 21 and the inner wall on the right side of the purge housing 21. At the middle part of the outer peripheral wall of the die core sleeve 22, there is an annular groove 221. There are intervals between the left and right ends of the annular groove 221 and the left and right ends of the die core sleeve 22 respectively. The annular groove 221 communicates with the trachea connector 211. On the left end face of the die core sleeve 22, there is a first circular counterbore 222 that is coaxially arranged and recessed into the die core sleeve 22 with an opening to the left. The diameter of the first circular counterbore 222 is larger than the inner diameter of the die core sleeve 22 and smaller than the outer diameter of the die core sleeve 22. On the right end face of the first circular counterbore 222, there is a second circular counterbore 223 that is coaxially arranged with an opening to the left and recessed to the right towards the die core sleeve 22. The diameter of the second circular counterbore 223 is larger than the inner diameter of the die core sleeve 22 and smaller than the diameter of the first circular counterbore 222. On the inner peripheral wall of the second circular counterbore 223, a plurality of inclined ventilation holes 225 are annularly arrayed. The ventilation holes 225 are circular through holes. The left end of the ventilation hole 225 communicates with the second circular counterbore 223 inwardly, and the right end communicates with the annular groove 221 outwardly. On the right end face of the die core sleeve 22, there is a third circular counterbore 224 that is coaxially arranged and recessed into the die core sleeve 22 with an opening to the right. The diameter and depth of the third circular counterbore 224 are the same as the diameter and depth of the first circular counterbore 222 respectively;

[0038] The third circular counterbore 224 and the first circular counterbore 222 are both provided with a die core 23. The die core 23 is an annular body. The outer diameter of the die core 23 matches the diameters of the first circular counterbore 222 and the third circular counterbore 224, and the inner diameter is smaller than the diameter of the first circular through-hole 213. The length of the die core 23 matches the depths of the first circular counterbore 222 and the third circular counterbore 224. A end cover 24 is connected to the left end of the purging housing 21. The end cover 24 is a circular plate body with a diameter consistent with the outer ring diameter of the first connecting plate 214. A top plate 241 is coaxially arranged on the right side surface of the end cover 24. The top plate 241 is a circular plate body with a diameter matching the inner diameter of the purging housing 21. A plurality of second bolt holes penetrating the left and right side surfaces of the end cover 24 are annularly arrayed on the end cover 24. The plurality of second bolt holes are opposite to the plurality of first bolt holes left and right. A second circular through-hole sequentially penetrating the left side surface of the end cover 24 and the right side surface of the top plate 241 is provided at the center of the end cover 24 and the top plate 241. The second circular through-hole and the first circular through-hole 213 have the same diameter and are opposite left and right. The top plate 241 is located inside the purging housing 21 and presses against the die core sleeve 22 and the die core 23;

[0039] A plurality of third bolt holes are annularly arrayed on the right side wall of the pickling tank 1 outside the wire outlet 12. The purging housing 21 and the end cover 24 are connected to the right outer wall of the pickling tank 1 by fastening bolts 3 passing through the first bolt holes, the second bolt holes and the third bolt holes.

[0040] The inner ring surface of the die core 23 and the left and right end faces of the die core 23 are smoothly transitioned.

[0041] The purging housing 21 is a hollow cylinder with an open left end made of PP or polytetrafluoroethylene. The die core sleeve 22 is a pipe body made of PP or polytetrafluoroethylene. The end cover 24 is a circular plate body made of PP or polytetrafluoroethylene. The die core 23 is an annular body made of alloy material. The inner ring surface of the die core 23 is a smooth surface.

[0042] A reducer 4 is arranged inside the right part of the pickling tank 1. The reducer 4 includes an outer pipe 41, an indicating cap 42, an inner pipe 43 and a connecting pipe 44. The outer pipe 41 is a circular pipe body with openings at both the upper and lower ends. The central axis of the outer pipe 41 is located in front of the central axis of the wire outlet 12. On the left part of the rear peripheral wall of the outer pipe 41, there is a circular wire hole 411 that horizontally penetrates the inner and outer peripheral walls of the outer pipe 41 from left to right. The wire hole 411 is coaxial with the wire outlet 12. The lower end of the outer pipe 41 extends below the liquid level of the pickling solution 13, and there is a gap between the lower end of the outer pipe 41 and the inner bottom surface of the pickling tank 1. A partition plate 412 located above the liquid level of the pickling solution 13 is arranged inside the lower part of the outer pipe 41. The partition plate 412 is a circular plate body. The outer edge of the partition plate 412 is connected to the inner wall of the outer pipe 41, and the middle part bulges upward. The partition plate 412 is evenly provided with a plurality of first through holes that penetrate the upper and lower surfaces of the partition plate 412. The upper end of the outer wall of the outer pipe 41 is rotatably connected with an indicating cap 42. The indicating cap 42 is a hollow cylinder with an opening at the lower end. A plurality of inclined strip-shaped through holes 421 that penetrate the inner and outer peripheral walls of the indicating cap 42 are annularly arranged on the peripheral wall of the indicating cap 42. The radial inclination direction of the strip-shaped through holes 421 is in a counterclockwise state along the circumferential direction of the indicating cap 42. The lower end of the inner peripheral wall of the indicating cap 42 is connected to the upper end of the outer peripheral wall of the outer pipe 41 through a bearing 422. An inner pipe 43 is coaxially arranged inside the outer pipe 41. The inner pipe 43 is a circular pipe body with openings at both the upper and lower ends. The rear end of the inner pipe 43 is located in front of the central axis of the wire hole 411. There is a gap between the lower end of the inner pipe 43 and the upper surface of the partition plate 412. A baffle 431 is arranged on the upper part of the outer peripheral wall of the inner pipe 43. The baffle 431 is an annular plate body. The lower surface of the baffle 431 is higher than the wire outlet 12. The inner ring surface of the baffle 431 is connected to the upper part of the outer peripheral wall of the inner pipe 43, and the outer ring surface is connected to the upper part of the inner peripheral wall of the outer pipe 41. A second through hole 432 located above and to the right of the wire hole 411 and penetrating the upper and lower surfaces of the baffle 431 is arranged on the right part of the baffle 431. A plurality of connecting rods 433 are annularly arranged on the lower part of the outer peripheral wall of the inner pipe 43. The outer ends of the connecting rods 433 are connected to the inner peripheral wall of the outer pipe 41. The connecting pipe 44 is a circular pipe body with the left end lower than the right end. The inner diameter of the connecting pipe 44 is larger than the diameter of the wire hole 411. The left end of the connecting pipe 44 communicates with the right rear part of the outer pipe 41. The upper end of the inner peripheral wall of the left end of the connecting pipe 44 is flush with the upper end of the wire hole 411, and the lower end of the inner peripheral wall of the right end of the connecting pipe 44 is flush with the lower end of the wire hole 411. A second connecting plate 441 is connected to the right end of the outer peripheral wall of the connecting pipe 44. The second connecting plate 441 is an annular plate body. The second connecting plate 441 is sleeved on the right end of the outer peripheral wall of the connecting pipe 44. The right end surface of the second connecting plate 441 is aligned with the right end of the connecting pipe 44. The outer diameter of the second connecting plate 441 is the same as the outer diameter of the first connecting plate 214. A plurality of fourth bolt holes are annularly arranged on the second connecting plate 441. The fastening bolt 3 passes through the fourth bolt holes to connect the reducer 4 to the right inner wall of the pickling tank 1.

[0043] The outer wall of the indicator cap 42 is coated with a paint layer, and the paint layer is a vertical stripe color area formed by two colors of paint layers alternately arranged on the outer wall of the indicator cap 42.

[0044] The two colors of paint layers are respectively a red paint layer and a blue paint layer.

[0045] The outer end of the strip-shaped through hole 421 is inclined downward, the upper end of the strip-shaped through hole 421 is lower than the upper end of the pickling tank 1 , and the upper end of the indicator cap 42 is higher than the upper end of the pickling tank 1 .

[0046] The outer tube 41 is a round tube made of PP, the indicator cap 42 is a hollow cylinder made of PP with an open lower end, the inner tube 43 is a round tube made of PP, and the connecting tube 44 is a round tube made of PP with the left end lower than the right end.

[0047] A spiral blade 434 is provided inside the inner tube 43. The spiral blade 434 is coiled on a central column 435. The central column 435 is a cylinder with a diameter smaller than the inner diameter of the inner tube 43 and coaxial with the inner tube 43. The outer edge of the spiral blade 434 is connected to the inner circumferential wall of the inner tube 43. The spiral blade 434 and the central column 435 divide the space inside the inner tube 43 into a spiral cavity.

[0048] The upper and lower ends of the spiral blade 434 are flush with the upper and lower ends of the inner tube 43 respectively.

[0049] An inner tank whose top is lower than the upper end of the pickling tank 1 is arranged in the upper part of the pickling tank 1, and the inner tank is a tank-like structure with an open upper end. The front and rear ends of the inner tank are connected to the front and rear inner side walls of the pickling tank 1, and circular holes coaxial with the steel wire inlet 11 and the steel wire outlet 12 are arranged on the left and right side walls of the inner tank. Acid discharge holes are evenly distributed on the bottom surface of the inner tank. A chemical pump is arranged outside the pickling tank 1, and the inlet of the chemical pump is connected to the pickling tank 1 through a pipeline, and the outlet of the chemical pump is connected to the inner tank through a pipeline, and the pipe section of the chemical pump outlet is larger than the sum of the areas of the multiple acid discharge holes on the bottom surface of the inner tank.

[0050] When the present invention is in use, the steel wire enters the pickling tank from the steel wire inlet, passes through the outer tube of the reducer and the connecting tube to enter the purge device, passes through the end cover of the purge device, the core on the left of the core sleeve, the second circular countersunk hole, the middle of the core sleeve, the core on the right of the core sleeve, and then passes through the first circular through hole 213 of the purge shell to exit the purge device;

[0051] After the steel wire is pickled in the pickling tank, the air flow of the compressed air in the air pipe enters the cavity between the purging housing and the annular groove of the die core sleeve through the air pipe joint, enters the second circular counterbore through the air vent 225, and then enters the eliminator through the space between the steel wire and the inner die core ring at the left part of the die core sleeve, between the steel wire and the inner wall of the second circular through hole of the end cap, and between the steel wire and the inner wall of the steel wire outlet. At this stage, due to the relatively high air flow pressure and velocity of the compressed air, the air flow of the compressed air purges the pickling solution on the surface of the steel wire and carries the purged pickling solution into the eliminator. After the air flow carrying the pickling solution enters the connecting pipe of the eliminator, due to the increase in the flow diameter, the air flow velocity decreases. Also, because the connecting pipe is a pipe body with a downward inclination at the left end, the air flow will spiral downward along the inner peripheral wall of the outer pipe. The pickling solution carried in the air flow is thrown out due to its large inertia. The thrown pickling solution impacts on the inner wall of the outer pipe and flows downward along with the air flow of the compressed air, gathers on the upper surface of the partition plate, and gradually drips into the pickling solution below the partition plate. Since the lower end of the outer pipe is immersed in the pickling solution to form a liquid seal, the air flow will not be discharged from the lower end of the outer pipe, but will gather towards the center of the lower part of the outer pipe and then spiral upward along the inner pipe along the spiral blade. When the air flow of the compressed air flows upward in the inner pipe, it throws out the pickling solution carried, causing it to gather on the inner wall of the inner pipe and be blown by the air flow to flow upward along the inner wall of the inner pipe and be discharged from the upper end of the inner pipe. After the air flow exits the upper end of the inner pipe, the air pressure and velocity decrease, and the pickling solution is thrown onto the inner wall of the outer pipe and flows down along the inner wall of the outer pipe to gather on the upper surface of the baffle 431, and then returns to the space between the outer pipe and the inner pipe through the second through hole 432. The air flow flows upward out of the inner pipe and is discharged through the strip-shaped through hole of the indicating cap. Because the radial inclination direction of the strip-shaped through hole is arranged counterclockwise along the circumferential direction of the indicating cap 42 and the outer end of the strip-shaped through hole 421 is downwardly inclined, the air flow can push the indicating cap to rotate, and the two colors on the indicating cap can be observed to alternate, so as to judge whether the purging device and the eliminator are operating normally. If the alternating frequency of the two colors on the indicating cap is observed to slow down, it means that the purging air flow decreases or the friction of the eliminator increases, and it is necessary to check whether the air supply system is blocked or perform maintenance on the eliminator. If the alternating frequency of the two colors on the indicating cap is observed to accelerate, it means that the parts of the purging device are worn, such as the diameter of the inner die core ring becomes larger and the air leakage accelerates, and it is necessary to replace them in time.

[0052] The purging device of the present invention is small in volume, and the gap between the die core sleeve and the outer wall of the steel wire is small. When passing through the compressed air, the purging force can be increased, making the purging more thorough. The purging device is small in volume, saving costs, facilitating maintenance and replacement of parts, and convenient for installation. The number of purging devices can be adjusted according to the number of pickled steel wires, effectively reducing the waste of compressed air and ensuring the pressure and purging effect of the compressed air.

[0053] The purge housing, die core sleeve and cover plate of the purger of the present invention are all made of PP or polytetrafluoroethylene, which are corrosion-resistant. The die core is made of an alloy (such as nickel-chromium alloy, high-manganese alloy or nickel-tungsten alloy), which can guide and restrict the steel wire, protect the purge housing, die core sleeve and cover plate, reduce wear and extend the service life.

[0054] The present invention is provided with a reducer, which can quickly reduce the air flow rate and pressure blown out by the purger, reduce the pickling solution carried in the air flow, avoid the pickling solution from splashing due to the impact of compressed air, avoid the pickling solution from contaminating the bodies and work clothes of the staff, and ensure the personal safety of the staff.

[0055] A coating layer is coated on the outer peripheral wall of the indicating cap of the present invention. The coating layer has two colors. When the purger is working, the air flow overflowing from the purger will push the indicating cap to rotate. The operator only needs to observe the rotation speed of the indicating cap to know whether the purger and the reducer are working and whether the working state is smooth, so as to quickly understand the operation state of the equipment.

[0056] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various deformations of the technical solutions of the present invention can be made without departing from the spirit of the present invention, that is, within the scope of disclosure.

Claims

1. An acid pickling and purging device for wire pre-treatment, comprising an acid pickling tank (1). The upper part of the left side wall of the acid pickling tank (1) is provided with a wire inlet (11), and the upper part of the right side wall is provided with a wire outlet (12) corresponding to the wire inlet (11). Both the wire inlet (11) and the wire outlet (12) are circular holes. The acid pickling tank (1) is filled with pickling solution (13), and it is characterized in that, A blower (2) is installed on the right outer wall of the pickling tank (1) outside the wire outlet (12). The blower (2) includes a blower housing (21), a die core sleeve (22), a die core (23) and an end cap (24). The blower housing (21) is a hollow cylinder with an open left end. At the upper middle part of the outer peripheral wall of the blower housing (21), there is a threaded hole penetrating through the inner and outer peripheral walls of the blower housing (21). A tracheal joint (211) is connected in the threaded hole. The outer end of the tracheal joint (211) is connected with a trachea (212). At the right end of the blower housing (21), there is a first circular through hole (213) penetrating through the inner and outer walls on the right side of the blower housing (21). At the left end of the outer peripheral wall of the blower housing (21), there is a first connecting plate (214). The first connecting plate (214) is an annular plate body. The inner ring surface of the first connecting plate (214) is connected with the left end of the outer peripheral wall of the blower housing (21). A plurality of first bolt holes are annularly arrayed on the first connecting plate (214). A die core sleeve (22) is arranged in the blower housing (21). The die core sleeve (22) is a pipe body with an outer diameter matching the inner diameter of the blower housing (21). The inner diameter of the die core sleeve (22) is the same as the diameter of the first circular through hole (213). The length of the die core sleeve (22) is less than the distance between the left end of the blower housing (21) and the inner wall on the right side of the blower housing (21). At the middle part of the outer peripheral wall of the die core sleeve (22), there is an annular groove (221). There are spaces between the left and right ends of the annular groove (221) and the left and right ends of the die core sleeve (22) respectively. The annular groove (221) is communicated with the tracheal joint (211). On the left end face of the die core sleeve (22), there is a first circular counterbore (222) which is recessed towards the inside of the die core sleeve (22) and has an opening to the left. The diameter of the first circular counterbore (222) is larger than the inner diameter of the die core sleeve (22) and smaller than the outer diameter of the die core sleeve (22). On the right end face of the first circular counterbore (222), there is a second circular counterbore (223) which is recessed towards the die core sleeve (22) with an opening to the left and a rightward orientation. The diameter of the second circular counterbore (223) is larger than the inner diameter of the die core sleeve (22) and smaller than the diameter of the first circular counterbore (222). On the inner peripheral wall of the second circular counterbore (223), a plurality of inclined ventilation holes (225) are annularly arrayed. The ventilation holes (225) are circular through holes. The left ends of the ventilation holes (225) are inwardly communicated with the second circular counterbore (223), and the right ends are outwardly communicated with the annular groove (221). On the right end face of the die core sleeve (22), there is a third circular counterbore (224) which is recessed towards the inside of the die core sleeve (22) and has an opening to the right. The diameter and depth of the third circular counterbore (224) are the same as the diameter and depth of the first circular counterbore (222) respectively. The third circular counterbore (224) and the first circular counterbore (222) are both provided with a die core (23). The die core (23) is an annular body. The outer diameter of the die core (23) matches the diameters of the first circular counterbore (222) and the third circular counterbore (224), and the inner diameter is smaller than the diameter of the first circular through-hole (213). The length of the die core (23) matches the depths of the first circular counterbore (222) and the third circular counterbore (224). A end cap (24) is connected to the left end of the purging housing (21). The end cap (24) is a circular plate body with a diameter consistent with the outer diameter of the first connecting plate (214). A top plate (241) is coaxially arranged on the right side surface of the end cap (24). The top plate (241) is a circular plate body with a diameter matching the inner diameter of the purging housing (21). A plurality of second bolt holes penetrating the left and right side surfaces of the end cap (24) are annularly arrayed on the end cap (24). The plurality of second bolt holes are opposite to the plurality of first bolt holes left and right. A second circular through-hole penetrating the left side surface of the end cap (24) and the right side surface of the top plate (241) in sequence is arranged at the center of the end cap (24) and the top plate (241). The second circular through-hole and the first circular through-hole (213) have the same diameter and are opposite left and right. The top plate (241) is located inside the purging housing (21) and presses against the die core sleeve (22) and the die core (23); A plurality of third bolt holes are annularly arrayed on the right side wall of the pickling tank (1) outside the wire outlet (12). The purging housing (21) and the end cap (24) are connected to the right outer wall of the pickling tank (1) by fastening bolts (3) passing through the first bolt holes, the second bolt holes and the third bolt holes.

2. The pickling and purging device for wire pre-treatment according to claim 1, wherein, The inner ring surface of the die core (23) and the left and right end faces of the die core (23) are smoothly transitioned.

3. The pickling and purging device for steel wire pretreatment according to claim 1, wherein, The purging housing (21) is a hollow cylinder with an open left end made of PP or polytetrafluoroethylene. The die core sleeve (22) is a tube body made of PP or polytetrafluoroethylene. The end cap (24) is a circular plate body made of PP or polytetrafluoroethylene. The die core (23) is an annular body made of alloy material, and the inner ring surface of the die core (23) is a smooth surface.

4. The pickling and purging device for wire pre-treatment according to claim 1, characterized in that, A reducer (4) is arranged inside the right part of the pickling tank (1). The reducer (4) includes an outer tube (41), an indicating cap (42), an inner tube (43) and a connecting tube (44). The outer tube (41) is a circular tube body with openings at both upper and lower ends. The central axis of the outer tube (41) is located in front of the central axis of the wire outlet (12). On the left part of the rear peripheral wall of the outer tube (41), there is a circular wire hole (411) that horizontally penetrates the inner and outer peripheral walls of the outer tube (41) from left to right. The wire hole (411) is coaxial with the wire outlet (12). The lower end of the outer tube (41) extends below the liquid level of the pickling solution (13). There is a gap between the lower end of the outer tube (41) and the inner bottom surface of the pickling tank (1). A partition plate (412) located above the liquid level of the pickling solution (13) is arranged inside the lower part of the outer tube (41). The partition plate (412) is a circular plate body. The outer edge of the partition plate (412) is connected to the inner wall of the outer tube (41), and the middle part protrudes upward. The partition plate (412) is evenly provided with first through holes that penetrate the upper and lower surfaces of the partition plate (412). The upper end of the outer wall of the outer tube (41) is rotatably connected with an indicating cap (42). The indicating cap (42) is a hollow cylinder with an opening at the lower end. A plurality of inclined strip-shaped through holes (421) that penetrate the inner and outer peripheral walls of the indicating cap (42) are annularly arranged on the peripheral wall of the indicating cap (42). The radial inclination direction of the strip-shaped through holes (421) is in a counterclockwise state along the circumferential direction of the indicating cap (42). The lower end of the inner peripheral wall of the indicating cap (42) is connected to the upper end of the outer peripheral wall of the outer tube (41) through a bearing (422). An inner tube (43) is coaxially arranged inside the outer tube (41). The inner tube (43) is a circular tube body with openings at both upper and lower ends. The rear end of the inner tube (43) is located in front of the central axis of the wire hole (411). There is a gap between the lower end of the inner tube (43) and the upper surface of the partition plate (412). A baffle (431) is arranged on the upper part of the outer peripheral wall of the inner tube (43). The baffle (431) is an annular plate body. The lower surface of the baffle (431) is higher than the wire outlet (12). The inner ring surface of the baffle (431) is connected to the upper part of the outer peripheral wall of the inner tube (43), and the outer ring surface is connected to the upper part of the inner peripheral wall of the outer tube (41). A second through hole (432) located above and to the right of the wire hole (411) and penetrating the upper and lower surfaces of the baffle (431) is arranged on the right part of the baffle (431). A plurality of connecting rods (433) are annularly arranged on the lower part of the outer peripheral wall of the inner tube (43). The outer ends of the connecting rods (433) are connected to the inner peripheral wall of the outer tube (41). The connecting tube (44) is a circular tube body with the left end lower than the right end. The inner diameter of the connecting tube (44) is larger than the diameter of the wire hole (411). The left end of the connecting tube (44) communicates with the right rear part of the outer tube (41). The upper end of the inner peripheral wall of the left end of the connecting tube (44) is flush with the upper end of the wire hole (411). The lower end of the inner peripheral wall of the right end of the connecting tube (44) is flush with the lower end of the wire hole (411). The right end of the outer peripheral wall of the connecting tube (44) is connected with a second connecting plate (441). The second connecting plate (441) is an annular plate body.The second connecting plate (441) is sleeved on the right end of the outer peripheral wall of the connecting pipe (44). The right end face of the second connecting plate (441) is aligned with the right end of the connecting pipe (44). The outer diameter of the second connecting plate (441) is the same as that of the first connecting plate (214). A plurality of fourth bolt holes are arranged in an annular array on the second connecting plate (441). The fastening bolt (3) passes through the fourth bolt hole to connect the reducer (4) to the right inner wall of the pickling tank (1).

5. The pickling and purging device for wire pre-treatment according to claim 4, wherein, A coating layer is coated on the outer peripheral wall of the indicating cap (42). The coating layer is a vertical strip color area formed by alternately arranging coating layers of two colors on the outer peripheral wall of the indicating cap (42).

6. The pickling and purging device for steel wire pretreatment according to claim 5, wherein, The coating layers of the two colors are a red coating layer and a blue coating layer respectively.

7. The pickling and purging device for wire pre-treatment according to claim 4, characterized in that, The outer end of the strip-shaped through-hole (421) is inclined downward. The upper end of the strip-shaped through-hole (421) is lower than the upper end of the pickling tank (1). The upper end of the indicating cap (42) is higher than the upper end of the pickling tank (1).

8. An acid pickling and purging device for steel wire pretreatment according to claim 4, characterized in that, The outer tube (41) is a circular tube body made of PP. The indicating cap (42) is a hollow cylinder with an open lower end made of PP. The inner tube (43) is a circular tube body made of PP. The connecting tube (44) is a circular tube body with a left end lower than the right end made of PP.

9. The pickling and purging device for steel wire pretreatment according to claim 4, characterized in that, A spiral blade (434) is provided inside the inner tube (43). The spiral blade (434) is wound around a central column (435). The central column (435) is a cylinder with a diameter smaller than the inner diameter of the inner tube (43) and coaxial with the inner tube (43). The outer edge of the spiral blade (434) is connected to the inner peripheral wall of the inner tube (43). The spiral blade (434) and the central column (435) divide the space inside the inner tube (43) into a spiral cavity.

10. The pickling and purging device for wire pre-treatment according to claim 9, characterized in that, The upper and lower ends of the spiral blade (434) are flush with the upper and lower ends of the inner tube (43) respectively.

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