An automatic pickling equipment for the production and processing of prestressed steel strands

Abstract

The present invention relates to the technical field of pickling equipment, and specifically discloses an automatic pickling equipment for the production and processing of prestressed steel strands. A wire pay-off roller fixedly installed on a workbench is arranged on one side of a pickling tank. A pretreatment mechanism with its bottom fixedly connected to the workbench is arranged between the wire pay-off roller and the pickling tank. Pickling mechanisms are axially connected to the side walls at both ends of the pickling tank. A cleaning spray head fixedly installed on the workbench is arranged on the other side of the pickling tank. A waste liquid collection tank is arranged on the workbench below the cleaning spray head. A water tank with its bottom fixedly connected to the workbench is arranged on the side of the cleaning spray head away from the pickling tank. A drying mechanism with its bottom fixedly connected to the workbench is arranged on the side of the water tank away from the pickling tank. A wire take-up roller fixedly installed on the workbench is arranged on the side of the drying mechanism away from the pickling tank. The pretreatment mechanism and the pickling mechanism cooperate with each other, which can enhance the pickling effect, reduce the pickling time, and reduce the treatment difficulty of acid liquid and residual liquid.

Description

Technical Field

[0001] The present invention relates to the technical field of pickling equipment, and particularly relates to an automatic pickling equipment for the production and processing of prestressed steel strands. Background Art

[0002] A prestressed steel strand is a stranded steel cable composed of 2, 3, 7 or 19 high-strength steel wires and is subjected to a stabilization treatment, having the characteristics of high strength and good relaxation performance, and is suitable for prestressed concrete and other similar uses.

[0003] In the production and processing of prestressed steel strands, it is necessary to heat and roll the raw wire rods so that a layer of scale is generated on the surface of the prestressed steel strands. In order to improve the performance of the prestressed steel strands, it is necessary to pickling and remove the scale on the surface with hydrochloric acid or sulfuric acid before drawing.

[0004] The traditional prestressed pickling method is to directly immerse the prestressed steel strands in an acid bath. This pickling method requires a large amount of acid solution and takes a long time. At the same time, the pickling effect is insufficient and multiple picklings are required. The large amount of waste liquid left in the acid bath after pickling also requires a large amount of manpower and material resources for treatment. The residual acid solution in the pickling bath is easy to volatilize and adhere to other equipment, causing corrosion to the equipment. The acid solution has an irritating odor and is also harmful to the human body. Summary of the Invention

[0005] The purpose of the present invention is to solve the deficiencies existing in the prior art, and to propose an automatic pickling equipment for the production and processing of prestressed steel strands.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] An automatic pickling equipment for the production and processing of prestressed steel strands, including a workbench and a pickling bath. A cuboid-shaped pickling bath is fixedly arranged at the top of the workbench. A wire pay-off roller fixedly installed on the workbench is arranged on one side of the pickling bath. A pretreatment mechanism with its bottom fixedly connected to the workbench is arranged between the wire pay-off roller and the pickling bath. Pickling mechanisms are axially connected to the side walls at both ends of the pickling bath. A cleaning spray head fixedly installed on the workbench is arranged on the other side of the pickling bath. A waste liquid collection pool is arranged on the workbench below the cleaning spray head. A water tank with its bottom fixedly connected to the workbench is arranged on the side of the cleaning spray head away from the pickling bath. A drying mechanism with its bottom fixedly connected to the workbench is arranged on the side of the water tank away from the pickling bath. A wire take-up roller fixedly installed on the workbench is arranged on the side of the drying mechanism away from the pickling bath.

[0008] Preferably, a separation net is arranged at the bottom of the pickling bath. An installation groove is formed on the inner wall of the pickling bath between the separation net and the pickling mechanism. A filter screen is slidably connected in the installation groove.

[0009] Preferably, the pickling mechanism includes a spiral spray head, a pickling barrel, and a hollow shaft. Hollow shafts are inserted through the side walls at both ends of the pickling tank. A pickling barrel is fixedly connected between the two hollow shafts. A number of spiral spray heads are evenly arranged on the inner walls of the pickling tank on both sides of the pickling barrel. The tail pipe of the spiral spray head is connected to the outlet end of an external acid pump, and the inlet end of the external acid pump is connected to an external acid tank through a pipe.

[0010] Preferably, the pickling barrel is a hollow cylindrical structure, and three liquid inlets are provided on the pickling barrel. A number of brush heads are evenly arranged on the inner wall of the pickling barrel between the three liquid inlets.

[0011] Preferably, a mounting plate is fixedly arranged on the outer wall of the pickling tank above the cleaning spray head. A motor is fixedly connected to the mounting plate. A second pulley is arranged on the hollow shaft on one side of the motor, and the output end of the motor is connected to the second pulley through a belt.

[0012] Preferably, the pretreatment mechanism includes a pressing air bag and a storage bin. A pressing air bag is fixedly arranged at the top of the workbench. The outlet pipe at the bottom of the pressing air bag is connected to a storage bin fixedly connected to the outer side wall of the pickling tank. A connecting pipe leading into the pickling tank is arranged on the side wall of the storage bin connected to the pickling tank. A connecting rod is fixedly connected to the top of the pressing air bag. The top of the connecting rod is axially connected to a transmission rod. The top of the transmission rod is rotatably connected to a fixed shaft. The fixed shaft is fixedly arranged on the outer ring of a first pulley axially connected to the outer side wall of the pickling tank. The first pulley is connected to the hollow shaft on one side of the wire pay-off roller through a belt.

[0013] Preferably, an inverted U-shaped mounting frame fixedly connected to the middle of the top of the water tank is provided on the water tank. Vertical first vertical rods are symmetrically arranged at the bottom ends on both sides of the cross bar of the inverted U-shaped mounting frame. A first guide wheel is axially connected to the bottom of every two first vertical rods. Vertical second vertical rods are symmetrically arranged at the bottom end of the cross bar on the side away from the pickling tank. A second guide wheel is axially connected to the bottom of the two second vertical rods. The second vertical rod is between the first vertical rod on the side away from the pickling tank and the inverted U-shaped mounting frame. The position of the second guide wheel is higher than the top of the water tank. A circular through hole is provided on the side wall of the inverted U-shaped mounting frame on one side of the second guide wheel.

[0014] Preferably, the drying mechanism includes a hot air blower, a dryer, and a hot air outlet. A hot air blower fixedly connected to the workbench is provided below the water tank near the wire take-up roller. A dryer leading into the water tank is fixedly connected to the side wall of the water tank near the wire take-up roller. A number of hot air outlets are provided on the dryer in the water tank. The hot air blower is connected to the dryer through an air duct.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] In the present invention, by providing a pickling mechanism which adopts the jet pickling method, compared with the immersion pickling method, the amount of acid solution used can be reduced. The external acid solution pump inputs the acid solution into each spiral nozzle, and then the spiral structure at the head of the spiral nozzle sprays it in a spiral shape. The spiral acid solution can cooperate with the pickling barrel when the pickling mechanism rotates, and the acid solution can be fully sprayed into the pickling barrel to react with the prestressed steel strand. The pickling barrel is driven by a motor to rotate around the hollow shaft, and the brush head can rotate follow-up when the pickling barrel rotates, and can immediately brush off the iron chloride scale on the surface when the acid solution reacts with the surface of the prestressed steel strand. The method of brushing while reacting can improve the reaction effect and reduce the working time, which is beneficial to improving the pickling efficiency.

[0017] In the present invention, by providing a pretreatment mechanism and a filter screen, the pretreatment mechanism obtains power through the rotation of the hollow shaft. During the pickling process when the motor drives the pickling barrel to rotate, the pretreatment mechanism rotates follow-up and presses the pressing airbag. The pressing airbag can fill the storage bin containing the auxiliary material powder for neutralization with air through the air blowing effect and blow the auxiliary material powder for neutralization into the pickling pool to carry out a neutralization reaction with the residual acid solution, which can effectively reduce the acid solution content and reduce the subsequent residual liquid treatment intensity. The reduction of the acid solution content also reduces the volatilization amount of the acid solution and reduces the corrosion of other equipment by the volatilized acid solution, which is beneficial to protecting the equipment and personnel. The pretreatment mechanism is linked with the pickling mechanism and can be started and stopped simultaneously, which is convenient for control. The filter screen can collect some granular residues that fall during the pickling process, reduce the precipitation amount in the residual liquid at the bottom of the pickling pool, and is beneficial to reducing the cleaning difficulty and the treatment cost during the sewage cleaning. Brief Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the overall structure of an automatic pickling device for the production and processing of prestressed steel strands proposed by the present invention;

[0019] Figure 2 It is a top view of an automatic pickling device for the production and processing of prestressed steel strands proposed by the present invention;

[0020] Figure 3 It is a side view of an automatic pickling device for the production and processing of prestressed steel strands proposed by the present invention;

[0021] Figure 4 It is a schematic diagram of the structure of the pretreatment mechanism of an automatic pickling device for the production and processing of prestressed steel strands proposed by the present invention;

[0022] Figure 5 It is a schematic diagram of the position of the water tank installation groove of an automatic pickling device for the production and processing of prestressed steel strands proposed by the present invention;

[0023] Figure 6 It is a schematic diagram of the structure of the pickling mechanism of an automatic pickling device for the production and processing of prestressed steel strands proposed by the present invention;

[0024] Figure 7 Schematic diagram of the mounting frame structure of an automatic pickling device for the production and processing of prestressed steel strands proposed by the present invention;

[0025] Figure 8 Schematic diagram of the first vertical rod and the first guide wheel structure of an automatic pickling device for the production and processing of prestressed steel strands proposed by the present invention;

[0026] Figure 9 Schematic diagram of the drying mechanism of an automatic pickling device for the production and processing of prestressed steel strands proposed by the present invention.

[0027] In the figure: 1, workbench; 2, wire pay-off reel; 3, pretreatment mechanism; 31, first pulley; 32, fixed shaft; 33, transmission rod; 34, connecting rod; 35, pressing airbag; 36, storage bin; 4, pickling tank; 5, isolation net; 6, installation groove; 61, filter screen; 7, spiral nozzle; 8, pickling mechanism; 81, pickling barrel; 82, brush head; 83, liquid inlet; 84, hollow shaft; 85, second pulley; 9, motor; 10, cleaning nozzle; 11, waste liquid collection pool; 12, water tank; 121, first vertical rod; 122, first guide wheel; 123, second vertical rod; 124, second guide wheel; 13, drying mechanism; 131, hot air blower; 132, dryer; 133, hot air outlet; 14, wire take-up reel. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0029] Refer to Figures 1-9, An automated pickling equipment for the production and processing of prestressed steel strands, including a workbench 1 and a pickling tank 4. A pickling tank 4 with a cuboid structure is fixedly arranged at the top of the workbench 1. A wire pay-off reel 2 fixedly installed on the workbench 1 is arranged on one side of the pickling tank 4. A pretreatment mechanism 3 with its bottom fixedly connected to the workbench 1 is arranged between the wire pay-off reel 2 and the pickling tank 4. Pickling mechanisms 8 are axially connected to the side walls at both ends of the pickling tank 4. A cleaning spray head 10 fixedly installed on the workbench 1 is arranged on the other side of the pickling tank 4. A waste liquid collection tank 11 is arranged on the workbench 1 below the cleaning spray head 10. A water tank 12 with its bottom fixedly connected to the workbench 1 is arranged on the side of the cleaning spray head 10 away from the pickling tank 4. A drying mechanism 13 with its bottom fixedly connected to the workbench 1 is arranged on the side of the water tank 12 away from the pickling tank 4. A wire take-up reel 14 fixedly installed on the workbench 1 is arranged on the side of the drying mechanism 13 away from the pickling tank 4. In this automated pickling equipment, each process is arranged in sequence on the workbench 1. The prestressed steel strand is released from the wire pay-off reel 2, passes through the hollow shaft 84, and then enters the pickling bucket 81 of the pickling mechanism 8 for pickling. It passes out from the hollow shaft 84 on the other side, passes below the cleaning spray head 10, and the acid liquid residue on the surface of the prestressed steel strand is pre-cleaned by the cleaning spray head 10. Then it passes into the water tank 12 and is guided by the first guide wheel 122 to be cleaned in the clean water in the water tank 12. When passing between another first guide wheel 122 and the second guide wheel 124, the water on the prestressed steel strand is dried by the drying mechanism 13, and finally is taken up by the wire take-up reel 14. The wire take-up reel 14 is driven by a driving machine. The pickling mechanism 8 can improve the pickling effect of the prestressed steel strand, reduce the pickling time, and at the same time reduce the usage amount of the acid liquid. The pretreatment mechanism 3 can neutralize the acid liquid in the pickling tank 4 during the working process of the pickling mechanism 8, reduce subsequent treatment processes, and at the same time reduce the harm caused by the volatilization of the acid liquid to the equipment. The waste liquid collection tank 11 can collect the mixed liquid flowing down from the pre-cleaning of the cleaning spray head 10. After the pre-cleaning by the cleaning spray head 10, the content of the acid liquid remaining on the prestressed steel strand entering the water tank 12 is reduced, which can extend the service time of the water tank 12. The drying mechanism 13 can quickly dry the prestressed steel strand to prevent secondary rusting in the wire take-up reel 14.

[0030] As a technical optimization scheme of the present invention, an isolation net 5 is arranged at the bottom of the pickling tank 4. An installation groove 6 is opened on the inner wall of the pickling tank 4 between the isolation net 5 and the pickling mechanism 8. A filter screen 61 is slidably connected in the installation groove 6. The filter screen 61 can collect some granular residues falling during the pickling process, reduce the precipitation amount in the residual liquid at the bottom of the pickling tank 4, and is beneficial to reducing the cleaning difficulty and the treatment cost during sewage cleaning. The isolation net 5, as a protective net at the bottom of the pickling tank 4, can protect the equipment above, prevent objects from falling into the bottom acid liquid, and the residual liquid at the bottom of the pickling tank 4 can be extracted in real time during the pickling operation process to prevent the pickling residual liquid from spreading to the pickling bucket 81 and overflowing from the hollow shaft 84.

[0031] As a technical optimization solution of the present invention, the pickling mechanism 8 includes a spiral nozzle 7, a pickling barrel 81 and a hollow shaft 84. Hollow shafts 84 are inserted through the side walls at both ends of the pickling tank 4. A pickling barrel 81 is fixedly connected between the two hollow shafts 84. A number of spiral nozzles 7 are evenly arranged on the inner walls of the pickling tank 4 on both sides of the pickling barrel 81. The tail pipe of the spiral nozzle 7 is connected to the outlet end of an external acid pump, and the inlet end of the external acid pump is connected to an external acid tank through a pipe. Different from the traditional immersion pickling method, the pickling mechanism 8 adopts a jet pickling method. Compared with the immersion pickling, the amount of acid used can be reduced. The external acid pump inputs the acid into each spiral nozzle 7, and then the acid is sprayed in a spiral shape by the spiral structure at the head of the spiral nozzle 7. The spiral acid can cooperate with the pickling barrel 81 when the pickling mechanism 8 rotates, and the acid can be fully sprayed into the pickling barrel 81 to react with the prestressed steel strand. The hollow shaft 84 can not only ensure the rotation of the pickling mechanism 8, but also does not affect the passing in and out of the prestressed steel strand.

[0032] As a technical optimization solution of the present invention, the pickling barrel 81 is a hollow cylindrical structure. Three liquid inlets 83 are provided on the pickling barrel 81. A number of brush heads 82 are evenly arranged on the inner wall of the pickling barrel 81 between the three liquid inlets 83. The prestressed steel strand passes into the pickling barrel 81. The liquid inlets 83 facilitate the spiral nozzle 7 to spray the acid into the pickling barrel 81. The size and shape of the liquid inlets 83 can be adjusted according to the actual use situation. The width of the pickling barrel 81 between the three liquid inlets 83 is the same as the width of the brush heads 82, which can improve the size of the liquid inlets 83 as much as possible, so that the spiral nozzle 7 can spray the acid into the pickling barrel 81 more fully, enhancing the pickling effect. The brush heads 82 can rotate synchronously when the pickling barrel 81 rotates, and can brush off the iron chloride scale on the surface immediately when the acid reacts with the surface of the prestressed steel strand. The method of brushing while reacting can improve the reaction effect and reduce the working time, which is beneficial to improving the pickling efficiency.

[0033] As a technical optimization solution of the present invention, a mounting plate is fixedly provided on the outer wall of the pickling tank 4 above the cleaning nozzle 10. A motor 9 is fixedly connected to the mounting plate. A second pulley 85 is provided on the hollow shaft 84 on one side of the motor 9. The output end of the motor 9 is connected to the second pulley 85 by a belt. In order to realize the rotation of the pickling barrel 81, a second pulley 85 is installed on the hollow shaft 84 and connected to the motor 9 by a belt. During pickling, after threading the prestressed steel strand, starting the motor 9 can drive the pickling barrel 81 to rotate, and the brush heads 82 will rotate accordingly to brush off the residues generated by the reaction on the surface of the prestressed steel strand. At the same time, the rotation of the hollow shaft 84 on the other side drives the pretreatment mechanism 3 to work, and a neutralization reaction is carried out on the residual liquid at the bottom of the pickling tank 4.

[0034] As a technical optimization solution of the present invention, the pretreatment mechanism 3 includes a pressing airbag 35 and a storage bin 36. The pressing airbag 35 is fixedly arranged at the top end of the workbench 1. The bottom outlet pipe of the pressing airbag 35 is connected to the storage bin 36 fixedly connected to the outer side wall of the pickling tank 4. A communicating pipe accessing the pickling tank 4 is arranged on the side wall of the storage bin 36 connected to the pickling tank 4. The top of the pressing airbag 35 is fixedly connected to a connecting rod 34. The top of the connecting rod 34 is axially connected to a transmission rod 33. The top of the transmission rod 33 is rotatably connected to a fixed shaft 32. The fixed shaft 32 is fixedly arranged on the outer ring of a first pulley 31 axially connected to the outer side wall of the pickling tank 4. The first pulley 31 is belt-connected to a hollow shaft 84 on one side of the wire pay-off roller 2. The pretreatment mechanism 3 obtains power through the rotation of the hollow shaft 84. When the hollow shaft 84 rotates, the first pulley 31 axially connected to the outer side wall of the pickling tank 4 rotates accordingly. The fixed shaft 32 makes a circular motion around the center of the first pulley 31. The transmission rod 33 is rotatably connected to the fixed shaft 32. The transmission rod 33 makes an eccentric motion in the up and down direction under the restriction of the bottom connecting rod 34. The connecting rod 34 can drive the pressing airbag 35 to complete the compression and release actions. Each time the pressing airbag 35 is pressed, the air in the pressing airbag 35 can be filled into the storage bin 36 through the pipe. A neutralizing auxiliary material powder is stored in the storage bin 36. The neutralizing auxiliary material powder can be blown into the pickling tank 4 by the incoming air through the communicating pipe. The neutralizing auxiliary material powder can react with the acid liquid residue in the pickling tank 4 to reduce the acid liquid content and lower the subsequent residue treatment intensity. The reduction of the acid liquid content also reduces the evaporation amount of the acid liquid and reduces the corrosion of other equipment by the volatilized acid liquid, which is beneficial to protecting the equipment and personnel.

[0035] As a technical optimization solution of the present invention, an inverted U-shaped mounting frame fixedly connected to the middle of the top end of the water tank 12 is arranged on the water tank 12. Vertical first vertical rods 121 are symmetrically arranged at the bottom ends of both sides of the cross bar of the inverted U-shaped mounting frame. A first guide wheel 122 is axially connected to the bottom of every two first vertical rods 121. Vertical second vertical rods 123 are symmetrically arranged at the bottom end of the cross bar on the side away from the pickling tank 4. A second guide wheel 124 is axially connected to the bottom of the two second vertical rods 123. The second vertical rods 123 are between the first vertical rods 121 on the side away from the pickling tank 4 and the inverted U-shaped mounting frame. The position of the second guide wheel 124 is higher than the top end of the water tank 12. A circular through hole is opened on the side wall of the inverted U-shaped mounting frame on one side of the second guide wheel 124. The setting of the first guide wheel 122 and the second guide wheel 124 can facilitate guiding the prestressed steel strand to penetrate into the water tank 12 and then into the cleaning water, and then penetrate out of the water tank 12. First, the prestressed steel strand penetrating from one side of the water tank 12 passes through the bottom of the two first guide wheels 122. After passing through the first guide wheel 122 close to the wire take-up roller 14, it vertically goes up and passes through the top of the second guide wheel 124. At this time, the prestressed steel strand is in a U-shaped shape in the water tank 12. Finally, it passes through the circular through hole and is wound into the wire take-up roller 14 to complete the pickling and cleaning work.

[0036] As a technical optimization solution of the present invention, the drying mechanism 13 includes a hot air blower 131, a dryer 132 and hot air outlets 133. A hot air blower 131 fixedly connected to the workbench 1 is provided below one side of the water tank 12 close to the wire take-up roller 14. A dryer 132 connected to the inside of the water tank 12 is fixedly connected to the side wall of the water tank 12 on one side close to the wire take-up roller 14. A plurality of hot air outlets 133 are formed in the dryer 132 inside the water tank 12. The hot air blower 131 and the dryer 132 are connected by an air duct. After being cleaned, the surface of the prestressed steel strand is attached with cleaning water. If it is directly wound on the wire take-up roller 14, it may cause secondary rusting of the prestressed steel strand. Therefore, it is necessary to dry the cleaned prestressed steel strand. Start the hot air blower 131. High-temperature air is generated in the hot air blower 131 and output to the dryer 132 through the air duct. The dryer 132 is embedded in the side wall of the water tank 12. The top of the dryer 132 is flush with the top of the water tank 12. The bottom of the dryer 132 is between the first guide wheel 122 and the second guide wheel 124 to ensure that the dryer 132 is above the water surface in the water tank 12 and parallel to the prestressed steel strand. When the prestressed steel strand moves, the high-temperature air input into the dryer 132 is released through the hot air outlets 133. The high-temperature air blows on the prestressed steel strand to blow the cleaning water into the water tank 12, which can not only play a drying role but also reduce the waste of cleaning water.

[0037] When the present invention is in use, the operator takes out the prestressed steel strand from the wire pay-off reel 2 in advance, passes it through the hollow shaft 84, then enters the pickling tank 81 of the pickling mechanism 8, passes through the hollow shaft 84 on the other side, passes under the cleaning spray head 10, and then passes into the water tank 12. The prestressed steel strand passing through the water tank 12 from one side passes through the bottom of the two first guide wheels 122, and after passing through the first guide wheel 122 close to the wire take-up reel 14, it goes vertically upward and passes through the top of the second guide wheel 124. At this time, the prestressed steel strand is in a U-shaped shape in the water tank 12, and finally passes through the circular through-hole and is wound onto the wire take-up reel 14, thus completing the preparation work before pickling the prestressed steel strand. Subsequently, the drive motor of the wire take-up reel 14, the hot air blower 131, the motor 9 and the external acid pump can be started. The rotation of the wire take-up reel 14 drives the prestressed steel strand to slowly move in the automatic pickling equipment. The output shaft of the motor 9 drives the second pulley 85 connected by the belt to rotate, and the hollow shaft 84 and the pickling tank 81 rotate accordingly. At the same time, the external acid pump inputs the acid solution into each spiral spray head 7, and the acid solution is sprayed in a spiral shape by the spiral structure at the head of the spiral spray head 7, and the acid solution is fully sprayed into the pickling tank 81 through the liquid inlet 83 to react with the prestressed steel strand. During the reaction process, the pickling tank 81 rotates continuously, and the brush head 82 can rotate synchronously when the pickling tank 81 rotates, and can brush off the iron chloride scale on the surface immediately when the acid solution reacts with the surface of the prestressed steel strand. The granular residue generated after the reaction can be collected by the filter screen 61, and the reaction residual liquid passes through the filter screen 61 and falls to the bottom of the pickling pool 4. While the motor 9 drives the hollow shaft 84 to rotate, the hollow shaft 84 close to the wire pay-off reel 2 drives the first pulley 31 to rotate through the belt, and the fixed shaft 32 makes a circular motion around the center of the first pulley 31. The transmission rod 33 makes an eccentric motion in the up and down direction under the restriction of the bottom connecting rod 34, and the connecting rod 34 can drive the pressing air bag 35 to complete the compression and release actions. Each time the pressing air bag 35 is pressed, the air in the pressing air bag 35 can be filled into the storage bin 36 through the pipeline. The neutralizing auxiliary material powder stored in the storage bin 36 can be blown into the pickling pool 4 by the filled air through the connecting pipe. The neutralizing auxiliary material powder reacts with the acid liquid residue in the pickling pool 4. After the pickled prestressed steel strand passes through the pickling pool 4, the cleaning water is sprayed by the cleaning spray head 10 to pre-clean the acid liquid residue on the surface of the prestressed steel strand. The mixed liquid after pre-cleaning flows into the waste liquid collection pool 11 under the cleaning spray head 10 for collection. Subsequently, the prestressed steel strand after pre-cleaning moves into the water tank 12 for secondary cleaning. During the process of the prestressed steel strand for secondary cleaning passing through the top of the second guide wheel 124 vertically upward after passing through the first guide wheel 122 close to the wire take-up reel 14, the drying mechanism 13 performs the drying work. The hot air blower 131 generates high-temperature air and outputs it to the dryer 132 through the air duct. When the prestressed steel strand moves, the high-temperature air input into the dryer 132 is released through the hot air outlet 133, and the high-temperature air blows on the prestressed steel strand to blow the cleaning water into the water tank 12.Finally, the pickled and cleaned prestressed steel strands are wound into the take-up reel 14.

[0038] Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.

[0039] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. An automatic pickling equipment for the production and processing of prestressed steel strands, comprising a workbench (1) and a pickling tank (4), characterized in that: At the top of the workbench (1), a pickling tank (4) with a cuboid structure is fixedly arranged. On one side of the pickling tank (4), a wire pay-off reel (2) fixedly installed on the workbench (1) is provided. Between the wire pay-off reel (2) and the pickling tank (4), a pretreatment mechanism (3) with its bottom fixedly connected to the workbench (1) is arranged. On the two end side walls of the pickling tank (4), pickling mechanisms (8) are pivotally connected. On the other side of the pickling tank (4), a cleaning spray head (10) fixedly installed on the workbench (1) is provided. On the workbench (1) below the cleaning spray head (10), a waste liquid collection tank (11) is arranged. On the side of the cleaning spray head (10) away from the pickling tank (4), a water tank (12) with its bottom fixedly connected to the workbench (1) is provided. On the side of the water tank (12) away from the pickling tank (4), a drying mechanism (13) with its bottom fixedly connected to the workbench (1) is provided. On the side of the drying mechanism (13) away from the pickling tank (4), a wire take-up reel (14) fixedly installed on the workbench (1) is provided; The pickling mechanism (8) includes a spiral spray head (7), a pickling barrel (81), and a hollow shaft (84). Hollow shafts (84) are inserted through the two end side walls of the pickling tank (4). A pickling barrel (81) is fixedly connected between the two hollow shafts (84). The pickling barrel (81) is a hollow cylindrical structure. Three liquid inlet openings (83) are provided on the pickling barrel (81). On the inner wall of the pickling barrel (81) between the three liquid inlet openings (83), a number of brush heads (82) are evenly arranged. On the inner walls of the pickling tank (4) on both sides of the pickling barrel (81), a number of spiral spray heads (7) are evenly arranged. The tail pipe of the spiral spray head (7) is connected to the outlet end of an external acid liquid pump, and the inlet end of the external acid liquid pump is connected to an external acid liquid tank through a pipe; On the outer wall of the pickling tank (4) above the cleaning spray head (10), a mounting plate is fixedly arranged. A motor (9) is fixedly connected to the mounting plate. A second pulley (85) is arranged on the hollow shaft (84) on one side of the motor (9). The output end of the motor (9) is connected to the second pulley (85) by a belt; The pretreatment mechanism (3) includes a pressing air bag (35) and a storage bin (36). A pressing air bag (35) is fixedly arranged at the top of the workbench (1). The bottom outlet pipe of the pressing air bag (35) is connected to a storage bin (36) fixedly connected to the outer side wall of the pickling tank (4). On the side wall of the storage bin (36) connected to the pickling tank (4), a communicating pipe accessing the pickling tank (4) is provided. The top of the pressing air bag (35) is fixedly connected to a connecting rod (34). The top of the connecting rod (34) is pivotally connected to a transmission rod (33). The top of the transmission rod (33) is rotatably connected to a fixed shaft (32). The fixed shaft (32) is fixedly arranged on the outer ring of a first pulley (31) pivotally connected to the outer side wall of the pickling tank (4). The first pulley (31) is connected to the hollow shaft (84) on one side of the wire pay-off reel (2) by a belt.

2. The automated pickling equipment for the production and processing of prestressed steel strands according to claim 1, wherein, A separation net (5) is arranged at the bottom of the pickling tank (4). On the inner wall of the pickling tank (4) between the separation net (5) and the pickling mechanism (8), a mounting groove (6) is provided. A filter screen (61) is slidably connected in the mounting groove (6).

3. The automated pickling equipment for the production and processing of prestressed steel strands according to claim 1, characterized in that, A reverse U-shaped mounting frame fixedly connected to the middle of the top end of the water tank (12) is provided on the water tank (12). Vertical first vertical rods (121) are symmetrically arranged at the bottom ends on both sides of the cross bar of the reverse U-shaped mounting frame. A first guide wheel (122) is axially connected to the bottom of every two first vertical rods (121). Vertical second vertical rods (123) are symmetrically arranged at the bottom end of the cross bar on the side away from the pickling tank (4). A second guide wheel (124) is axially connected to the bottom of the two second vertical rods (123). The second vertical rod (123) is between the first vertical rod (121) on the side away from the pickling tank (4) and the reverse U-shaped mounting frame. The position of the second guide wheel (124) is higher than the top end of the water tank (12). A circular through hole is formed in the side wall of the reverse U-shaped mounting frame on one side of the second guide wheel (124).

4. An automated pickling equipment for the production and processing of prestressed steel strands according to claim 1, characterized in that, The drying mechanism (13) includes a hot air blower (131), a dryer (132) and a hot air outlet (133). The hot air blower (131) fixedly connected to the workbench (1) is provided below the water tank (12) on the side close to the take-up roller (14). The dryer (132) connected to the inside of the water tank (12) is fixedly connected to the side wall of the water tank (12) on the side close to the take-up roller (14). A plurality of hot air outlets (133) are formed in the dryer (132) inside the water tank (12). The hot air blower (131) is connected to the dryer (132) through an air duct.

Images