Waste liquid recovery and treatment equipment for stainless steel pickling lines

Abstract

The present invention relates to waste liquid recovery and treatment equipment applied to a stainless steel pickling line, comprising a tank body, a loading cylinder, a sealing device, a spray elution component, and a lifting component. An ion elution chamber and an ion exchange chamber are respectively provided at the upper and lower ends of the tank body inner cavity. An acid discharge pipe is provided at the lower end of the tank body located at the ion elution chamber, and a water inlet pipe and a drain pipe are respectively provided at the upper and lower ends of the tank body located at the ion exchange chamber. An annular convex shell is provided on the side wall of the tank body located between the ion elution chamber and the ion exchange chamber, and a sealing device is provided in the convex shell. The spray elution device is provided in the ion elution chamber and elutes the rotating loading cylinder to remove target ions on the ion exchange resin, thereby achieving adsorption of acid liquid and being able to perform elution treatment regularly, thereby achieving acid liquid recovery and utilization, and at the same time maintaining and regenerating the ion exchange resin, thereby improving the service life and removal efficiency of the ion exchange resin.

Description

Technical Field

[0001] The patent of this invention relates to the technical field of pickling waste liquid treatment equipment, specifically to waste liquid recovery and treatment equipment used in stainless steel pickling lines. Background Art

[0002] Pickling wastewater generated during metal surface pickling typically contains acidic solutions, metal ions, organic matter, and other impurities. Because it contains acidic components and other harmful substances, pickling wastewater requires environmentally friendly recycling to prevent harm to the environment and human health. Commonly used waste acid recovery technologies for resource recovery and reuse include neutralization and precipitation, vacuum evaporation, spray roasting, and ion exchange separation. Neutralization and precipitation generate large amounts of sludge and concentrated hydrochloric acid, resulting in substandard emissions. Vacuum evaporation requires high energy consumption and equipment, increasing treatment costs. While spray roasting offers a high regeneration rate and concentration for treating waste hydrochloric acid, it also requires significant investment and operating costs. Ion exchange separation, on the other hand, can achieve efficient ion separation and purification in a short period of time. Ion exchange resins, with their large specific surface area and high adsorption capacity, fully utilize the adsorption properties of the resin material to achieve rapid ion exchange. The ion exchange resins used are reusable, making them highly economical. However, the ion exchange resin recovery device in the prior art cannot elute the ion exchange resin, which can easily cause the ion exchange resin to be contaminated or adsorb too many target ions, resulting in a significant decrease in removal efficiency and affecting the desorption efficiency.

[0003] Patent No.: CN201821341541.0, discloses a split ion exchange resin purification system, including a cleaning kettle and a vacuum kettle, the cleaning kettle includes a cleaning kettle body, a stirring paddle, a water spray nozzle and a drive motor, the vacuum kettle includes a vacuum kettle body, a vacuum pump and a steam heating jacket; the drive motor is placed at the top outside the cleaning kettle body and is connected to the stirring paddle arranged inside the cleaning kettle body; the water spray nozzle is arranged at the top of the cleaning kettle body; the steam heating jacket is arranged outside the vacuum kettle body, and an exhaust port is provided at the top of the vacuum kettle body, and the exhaust port is connected to the vacuum pump through a pipeline via a vacuum valve; a discharge port is provided at the bottom of the cleaning kettle, and the discharge port is connected to the washing product discharge valve and the waste liquid discharge valve respectively through pipelines, and the washing product discharge valve is connected to the feed port of the vacuum kettle through a pipeline. This application can achieve the simultaneous washing of the resin and removal of low-boiling substances, but requires two kettle bodies to perform the washing and removal work respectively. Moreover, during elution, the resin needs to be taken out of the ion exchange separation system and then transferred to the vacuum kettle for elution, which affects the efficiency of pickling waste liquid treatment. Summary of the Invention

[0004] In response to the above-mentioned problems, the present invention discloses a waste liquid recovery and treatment device for use in a stainless steel pickling line, which enables an ion exchange resin device to combine the ion exchange separation process and the ion elution treatment process in a single kettle, thereby facilitating efficient maintenance and regeneration of the ion exchange resin device, thereby improving the service life and removal efficiency of the ion exchange resin.

[0005] The specific technical solutions are as follows:

[0006] Waste liquid recovery and treatment equipment used in stainless steel pickling lines includes a tank body, a loading cylinder, a sealing device, a spray elution component, and a lifting component. The upper and lower ends of the tank body cavity are respectively provided with an ion elution chamber and an ion exchange chamber. The tank body is provided with an acid discharge pipe at the lower end of the ion elution chamber, and the upper and lower ends of the tank body are respectively provided with a water inlet pipe and a drain pipe; the side wall of the tank body between the ion elution chamber and the ion exchange chamber is provided with an annular convex shell, and the sealing device is arranged in the convex shell; the lifting component includes a lifting drive motor, a lifting screw, a guide rod, an upper seat plate, a lower seat plate and a hollow shaft, the center between the upper seat plate and the lower seat plate is longitudinally connected to the hollow shaft, a plurality of stirring blades are provided on the hollow shaft, and the bottom end of the hollow shaft passes through the lower seat plate and is connected to the output end of the rotary drive motor installed at the bottom of the tank body through a detachable transmission component. When the lower seat plate descends into the ion exchange chamber, the rotary drive motor drives the hollow shaft and the stirring blades to rotate through the transmission component; the side walls of the upper seat plate and the lower seat plate are provided with sealing The sealing groove that cooperates with the device; a plurality of loading cylinders are longitudinally arranged between the upper seat plate and the lower seat plate, and the loading cylinder is filled with ion exchange resin. The upper and lower ends of the loading cylinder are rotatably connected with the upper seat plate and the lower seat plate respectively, and the upper end of the loading cylinder is connected to the rotary drive assembly installed on the top of the tank body through a detachable transmission component 2. When the loading cylinder rises to the ion elution chamber, the rotary drive assembly drives the loading cylinder to rotate through the transmission component 2; the lifting screw is longitudinally arranged in the center of the tank body, and the lower end of the lifting screw is connected to the rotary drive assembly installed at the top of the upper seat plate The threaded sleeve of the center is threadedly connected, and the lifting screw rod passes through the top of the upper seat plate and extends downward into the hollow shaft. The upper end of the lifting screw rod is driven to rotate by the lifting drive motor installed on the top of the tank body. There are several guide rods and they are evenly distributed around the tank body. The upper and lower ends of the guide rods are respectively connected to the top and bottom ends of the tank body, and the guide rods longitudinally pass through the upper seat plate and the lower seat plate and guide the upper seat plate and the lower seat plate; the spray elution device is arranged in the ion elution chamber and elutes the rotating loading cylinder to remove target ions on the ion exchange resin.

[0007] Furthermore, the sealing device includes a displacement drive motor, a sealing plate, an annular rack, and a displacement screw. The sealing plate has a fan-shaped structure, and the number of sealing plates is several and distributed in an annular shape in the inner cavity of the convex shell. At least two guide grooves are provided on the sealing plate, and one end of the guide groove extends to the center of the tank body. A guide shaft is longitudinally passed through the guide groove. The upper and lower ends of the guide shaft are fixedly connected to the upper and lower ends of the convex shell. Two positioning blocks are provided on the guide shaft to fit the upper and lower ends of the sealing plate. Sealing rubber sleeves are provided on the inner end and both sides of the sealing plate. The sealing rubber sleeves cooperate with the sealing groove to achieve sealing, and the sealing plates are connected by the sealing rubber sleeves They are pressed against each other to seal; the sealing plates are each provided with a threaded plate, and the threaded plates are horizontally threadedly connected to a displacement screw, the direction of the displacement screw is consistent with the direction of the guide groove, one end of the displacement screw is rotatably set on the inner wall of one end of the convex shell through a shaft sleeve, and a rotating gear is provided on the displacement screw, one end of one displacement screw penetrates the side wall of the convex shell and is provided with a driven gear, the driven gear is meshed with a driving gear, and the driving gear is driven to rotate by a displacement drive motor installed on the convex shell; the outer end of the annular rack is slidably set on the inner wall of one end of the convex shell through a slide rail, and the annular rack is meshed with multiple rotating gears respectively.

[0008] Furthermore, annular inner convex strips are provided on the inner walls of the upper and lower ends of one end of the convex shell close to the tank body, and sealing convex strips that cooperate with the inner convex strips are provided on the upper and lower ends of the sealing rubber sleeve, so that when the sealing rubber sleeve cooperates with the sealing groove, the sealing convex strip is pressed against the inner convex strip to achieve sealing of the interior of the convex shell.

[0009] Furthermore, the transmission component 1 and the transmission component 2 both include a bevel gear and a gear sleeve seat, the bevel gear is a straight bevel gear, and the bevel gear is respectively arranged on the output shaft of the rotating motor and the lower end of the rotary drive component; the gear sleeve seat is respectively arranged at the top end of the loading cylinder and the bottom end of the control shaft, and a conical groove matching the size of the bevel gear is provided at one end of the gear sleeve seat close to the bevel gear, and a plurality of straight tooth blocks matching the bevel gear are radially distributed on the side wall of the conical groove, and the meshing connection between the gear sleeve seat and the bevel gear is realized by the engagement of the gear sleeve seat and the bevel gear, thereby realizing that the rotating motor drives the hollow shaft to rotate through the transmission component 1 and the rotary drive component drives the loading cylinder to rotate through the transmission component 2.

[0010] Furthermore, the rotation drive assembly includes a servo motor, a rotating shaft, a linkage gear, and a transmission gear. The number of the rotating shafts is several and distributed in a ring shape, and the position of each rotating shaft corresponds to a loading cylinder. The upper end of the rotating shaft is rotatably set at the top of the tank body, and the bevel gear is set at the bottom end of each rotating shaft. Several linkage gears are provided on the rotating shaft; the center of the transmission gear is rotatably set at the upper end of the lifting screw through a bearing, and the transmission gear is respectively engaged with each linkage gear; the servo motor is set at the top of the tank body and the output shaft of the servo motor is fixedly connected to one of the rotating shafts, so that the servo motor drives each rotating shaft to rotate through the cooperation between the linkage gear and the transmission gear.

[0011] Furthermore, the spray elution assembly includes an annular tube and a spray pipe. The annular tube is horizontally arranged in the ion elution chamber, and the annular tube is connected to the external water supply pipe. Several spray pipes are longitudinally arranged on the annular tube. The position of each spray pipe corresponds to a loading cylinder, and several spray heads are longitudinally arranged on the side of the spray pipe close to the loading cylinder.

[0012] Furthermore, the loading cylinder is filled with ion exchange resin, and a plurality of holes are opened on the surface of the loading cylinder, and the size of the holes is smaller than the particle size of the ion exchange resin.

[0013] The beneficial effects of the present invention are as follows: the ion exchange resin device of the present invention realizes the adsorption of acid liquid and can perform elution treatment regularly by arranging an elution chamber and an exchange chamber at the upper and lower ends of the tank body, thereby realizing the recycling of the acid liquid, and at the same time maintaining and regenerating the ion exchange resin, thereby improving the service life and removal efficiency of the ion exchange resin. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the ion exchange resin device in the present invention.

[0015] Figure 2 It is a transverse cross-sectional view of the tank body in the present invention.

[0016] Figure 3 It is a schematic structural diagram of the sealing device and the lower seat plate in the present invention.

[0017] Figure 4 for Figure 1 A magnified schematic diagram of .

[0018] Figure 5 for Figure 1 Enlarged schematic diagram of point B.

[0019] Figure 6 for Figure 1 Enlarged schematic diagram of point C.

[0020] Tank body 1, ion elution chamber 101, ion exchange chamber 102, acid discharge pipe 11, water inlet pipe 12, drain pipe 13, outer convex shell 14, inner convex strip 141, guide shaft 142, positioning block 143, loading cylinder 2;

[0021] Sealing device 3, displacement drive motor 31, driving gear 311, sealing plate 32, guide groove 321, sealing rubber sleeve 322, sealing ridge 323, annular rack 33, displacement screw 34, rotating gear 341, driven gear 342, threaded plate 35;

[0022] Spray elution component 4, annular tube 41, spray pipe 42, spray head 43;

[0023] Lifting assembly 5, lifting drive motor 51, lifting screw 52, ​​guide rod 53, upper seat plate 54, threaded sleeve 541, lower seat plate 55, hollow shaft 56, stirring blade 561, sealing groove 57, bevel gear 58, gear sleeve seat 59, conical groove 591, straight gear block 592, rotation drive motor 6, rotation drive assembly 7, servo motor 71, rotating shaft 72, linkage gear 73, transmission gear 74. DETAILED DESCRIPTION

[0024] To make the technical solution of the present invention more clear and explicit, the present invention is further described below in conjunction with the accompanying drawings. Any equivalent replacement of the technical features of the technical solution of the present invention and any solution derived from conventional reasoning shall fall within the scope of protection of the present invention. The fixed connection and fixed setting mentioned in the present invention are all common connection methods in the mechanical field, including welding, positioning bolt and nut connection, and screw connection.

[0025] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0026] like Figure 1As shown, the waste liquid recovery and treatment equipment used in the stainless steel pickling line includes a tank body 1, a loading cylinder 2, a sealing device 3, a spray elution component 4, and a lifting component 5. The upper and lower ends of the inner cavity of the tank body 1 are respectively provided with an ion elution chamber 101 and an ion exchange chamber 102. The tank body 1 is provided with an acid discharge pipe 11 at the lower end of the ion elution chamber 101. The acid discharge pipe 11 is connected to the acid recovery system through a pipeline for recovering the acid water after elution. The tank body 1 is provided with a water inlet at the upper and lower ends of the ion exchange chamber 102. The water inlet pipe 12 and the drain pipe 13 are used to discharge the filtered waste liquid, and the drain pipe 13 is used to discharge the waste water after ion exchange separation; the side wall of the tank body 1 is provided with an annular convex shell 14 between the ion elution chamber 101 and the ion exchange chamber 102, and the sealing device 3 is provided in the convex shell 14; the lifting assembly 5 includes a lifting drive motor 51, a lifting screw rod 52, a guide rod 53, an upper seat plate 54, a lower seat plate 55 and a hollow shaft 56, and the center longitudinal direction between the upper seat plate 54 and the lower seat plate 55 is axially spaced. The hollow shaft 56 is rotatably connected to the upper base plate 54, and a plurality of stirring blades 561 are provided on the hollow shaft 56. The stirring blades 561 stir the waste liquid in the ion exchange chamber 102 so that it is in full contact with the ion exchange resin. The bottom end of the hollow shaft 56 passes through the lower base plate 55 and is connected to the output end of the rotary drive motor 6 installed at the bottom of the tank body 1 through a detachable transmission component. When the lower base plate 55 descends into the ion exchange chamber 102, the rotary drive motor 6 drives the hollow shaft 56 and the stirring blades 561 to rotate through the transmission component, thereby stirring and mixing the waste liquid for ion exchange separation treatment. The side walls of the upper base plate 54 and the lower base plate 55 are both provided with an annular sealing groove 57 that cooperates with the sealing device 3. The sealing device 3 cooperates with the sealing grooves 57 of the upper base plate 54 and the lower base plate 55 in turn to achieve separation and sealing of the ion elution chamber 101 and the ion exchange chamber 102, so that the ion elution chamber 101 and the ion exchange chamber 102 can perform ion elution treatment and ion exchange separation treatment respectively.

[0027] A plurality of loading cylinders 2 are longitudinally arranged between the upper seat plate 54 and the lower seat plate 55. The plurality of loading cylinders 2 are distributed in a ring shape. The loading cylinders 2 are filled with ion exchange resin. A plurality of holes are opened on the surface of the loading cylinder 2. The hole size is smaller than the particle size of the ion exchange resin. The upper and lower ends of the loading cylinder 2 are rotatably connected to the upper seat plate 54 and the lower seat plate 55 respectively, and the upper end of the loading cylinder 2 passes through the upper seat plate 54 and is connected to the rotary drive component 7 installed on the top of the tank body 1 through a detachable transmission component 2. When the loading cylinder 2 rises to the ion elution chamber 101, the rotary drive component 7 drives the loading cylinder 2 to rotate through the transmission component 2, so as to facilitate the spray elution component 4 to perform spray elution; the lifting screw 52 is longitudinally arranged in the center of the tank body 1, and the lower end of the lifting screw 52 is threadedly connected to the threaded sleeve 541 installed at the top center of the upper seat plate 54, and the lifting screw 5 2 penetrates the top of the upper seat plate 54 and extends downward into the hollow shaft 56. The upper end of the lifting screw 52 is driven to rotate by the lifting drive motor 51 installed on the top of the tank body 1. There are multiple guide rods 53 and they are evenly distributed around the tank body 1. The upper and lower ends of the guide rods 53 are respectively connected to the top and bottom ends of the tank body 1. The guide rods 53 longitudinally penetrate the upper seat plate 54 and the lower seat plate 55 and guide the upper seat plate 54 and the lower seat plate 55. The spray elution device is arranged in the ion elution chamber 101 and elutes the rotating loading cylinder 2 to remove target ions on the ion exchange resin. When the loading cylinder 2 rises into the ion elution chamber 101, the sealing device 3 cooperates with the sealing groove 57 of the lower seat plate 55 to seal. When the loading cylinder 2 descends into the ion exchange chamber 102, the sealing device 3 cooperates with the sealing groove 57 of the upper seat plate 54 to seal.

[0028] like Figure 6 As shown, transmission component 1 and transmission component 2 both include a bevel gear 58 and a gear sleeve seat 59. The bevel gear 58 is a straight bevel gear 58. The bevel gear 58 is respectively arranged on the output shaft of the rotary motor and the lower end of the rotary drive component 7; the gear sleeve seat is respectively arranged at the top end of the loading cylinder 2 and the bottom end of the control shaft. A conical groove 591 matching the size of the bevel gear 58 is provided at one end of the gear sleeve seat 59 close to the bevel gear 58. A number of straight tooth blocks 592 matching the bevel gear 58 are radially distributed on the side wall of the conical groove 591. The meshing connection between the gear sleeve seat 59 and the bevel gear 58 is achieved by the engagement of the gear sleeve seat 59 with the bevel gear 58, thereby realizing that the rotary motor drives the hollow shaft 56 to rotate through transmission component 1 and the rotary drive component 7 drives the loading cylinder 2 to rotate through transmission component 2. In order to avoid the phenomenon of tooth jamming when the bevel gear 58 and the gear sleeve seat 59 are engaged, an elastic connection can be used between the shaft end of the bevel gear 58 and the output shaft of the rotating motor, and between the shaft end of the bevel gear 58 and the rotating shaft 72. For example, an elastic sleeve pin coupling can be used to enable the bevel gear 58 to undergo elastic displacement on the output shaft of the rotating motor and the rotating shaft 72 when subjected to axial force, and when the bevel gear 58 and the gear sleeve seat 59 are accurately engaged, the bevel gear 58 is reset under the elastic force.

[0029] like Figure 5 As shown, the rotation drive assembly 7 includes a servo motor 71, a rotating shaft 72, a linkage gear 73, and a transmission gear 74. There are several rotating shafts 72 and they are distributed in a ring shape, and the position of each rotating shaft 72 corresponds to a loading cylinder 2. The upper end of the rotating shaft 72 is rotatably set at the top of the tank body 1, and the bevel gear 58 is respectively set at the bottom end of each rotating shaft 72. Several linkage gears 73 are provided on the rotating shaft 72; the center of the transmission gear 74 is rotatably set at the upper end of the lifting screw 52 through a bearing, and the transmission gear 74 is respectively engaged with each linkage gear 73; the servo motor 71 is set at the top of the tank body 1 and the output shaft of the servo motor 71 is fixedly connected to one of the rotating shafts 72, so that the servo motor 71 drives each rotating shaft 72 to rotate through the cooperation between the linkage gear 73 and the transmission gear 74.

[0030] like Figure 2-4 As shown, the sealing device 3 includes a displacement drive motor 31, a sealing plate 32, an annular rack 33, and a displacement screw 34. The sealing plate 32 is a fan-shaped structure, and the number of the sealing plates 32 is several and annularly distributed in the inner cavity of the convex shell 14. The adjacent side walls of the two sealing plates 32 are parallel to each other. At least two guide grooves 321 are provided on the sealing plate 32. One end of the guide groove 321 extends to the center of the tank body 1. A guide shaft 142 is longitudinally passed through the guide groove 321. The upper and lower ends of the guide shaft 142 are fixedly connected to the upper and lower ends of the convex shell 14. Two positioning blocks 143 are provided on the guide shaft 142 to fit the upper and lower ends of the sealing plate 32. The two positioning blocks 143 are used to align the sealing plate 3 2 is positioned so that the sealing plate 32 is slidably arranged in the convex shell 14 through the guide shaft 142 and the slide groove. A sealing rubber sleeve 322 is provided at one inner end and both sides of the sealing plate 32. The sealing rubber sleeve 322 cooperates with the sealing groove 57 to achieve sealing, and the sealing plates 32 are pressed against each other by the sealing rubber sleeve 322 to seal. In addition, an annular inner convex strip 141 is provided on the inner wall of the upper and lower ends of the end of the convex shell 14 close to the tank body 1, and a sealing convex strip 323 is provided at the upper and lower ends of the sealing rubber sleeve 322 to cooperate with the inner convex strip 141. When the sealing rubber sleeve 322 cooperates with the sealing groove 57, the sealing convex strip 323 presses against the inner convex strip 141 to achieve sealing of the interior of the convex shell 14.

[0031] The sealing plate 32 is vertically provided with a threaded plate 35 at the center, and the threaded plate 35 is horizontally threadedly connected to a displacement screw 34. The direction of the displacement screw 34 is consistent with the direction of the guide groove 321. One end of the displacement screw 34 is rotatably set on the inner wall of one end of the convex shell 14 through a shaft sleeve, and a rotating gear 341 is provided on the displacement screw 34. One end of one displacement screw 34 passes through the side wall of the convex shell 14 and is provided with a driven gear 342. The driven gear 342 is meshed with a driving gear 311, and the driving gear 311 is driven to rotate by the displacement drive motor 31 installed on the convex shell 14; the outer end of the annular rack 33 is slidably provided by a slide rail Placed on the inner wall of one end of the convex shell 14, the annular rack 33 is respectively engaged with multiple rotating gears 341, so that the displacement drive motor 31 drives each screw to rotate through the annular rack 33, so that each sealing plate 32 is synchronously displaced toward the tank body 1, so that the sealing rubber sleeve 322 cooperates with the sealing groove 57 to perform sealing, and when the loading cylinder 2 of the ion exchange resin is in the ion exchange chamber 102, the sealing device 3 cooperates with the upper seat plate 54 to perform sealing, and when the loading cylinder 2 is in the ion elution chamber 101, the sealing device 3 cooperates with the lower seat plate 55 to perform sealing, thereby realizing the separation and sealing of the ion elution chamber 101 and the ion exchange chamber 102.

[0032] The spray elution assembly 4 includes a ring tube 41 and a spray tube 42. The ring tube 41 is horizontally arranged in the ion elution chamber 101. The ring tube 41 is connected to the external water supply pipe. Several spray tubes 42 are longitudinally arranged on the ring tube 41. The spray tubes 42 are fixed to the inner wall of the tank body 1 through a fixed bracket. The position of each spray tube 42 corresponds to a loading cylinder 2, and several spray heads 43 are longitudinally arranged on the side of the spray tube 42 close to the loading cylinder 2. The rotating loading cylinder 2 is impacted by the spray head 43 to achieve the effect of eluting the target ions.

[0033] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. Waste liquid recovery and treatment equipment used in stainless steel pickling lines, characterized by: The tank body is provided with an acid discharge pipe at the lower end of the ion elution chamber, and a water inlet pipe and a drain pipe at the upper and lower ends of the ion exchange chamber; the tank body is provided with an annular convex shell on the side wall between the ion elution chamber and the ion exchange chamber, and the sealing device is arranged in the convex shell; the lifting assembly includes a lifting drive motor, a lifting screw, a guide rod, an upper seat plate, a lower seat plate and a hollow shaft, the center longitudinal rotation between the upper seat plate and the lower seat plate connects the hollow shaft, a plurality of stirring blades are provided on the hollow shaft, and the bottom end of the hollow shaft passes through the lower seat plate and is connected to the output end of the rotary drive motor installed at the bottom of the tank body through a detachable transmission assembly; when the lower seat plate descends into the ion exchange chamber, the rotary drive motor drives the hollow shaft and the stirring blades to rotate through the transmission assembly; the side walls of the upper seat plate and the lower seat plate are provided with sealing grooves that cooperate with the sealing device. ; Several loading cylinders are longitudinally arranged between the upper seat plate and the lower seat plate, and the loading cylinder is filled with ion exchange resin. The upper and lower ends of the loading cylinder are rotatably connected to the upper seat plate and the lower seat plate respectively, and the upper end of the loading cylinder is connected to the rotating drive assembly installed on the top of the tank body through a detachable transmission component 2. When the loading cylinder rises to the ion elution chamber, the rotating drive assembly drives the loading cylinder to rotate through the transmission component 2; the lifting screw is longitudinally arranged at the center of the tank body, the lower end of the lifting screw is threadedly connected to the threaded sleeve installed at the top center of the upper seat plate, and the lifting screw passes through the top of the upper seat plate and extends downward into the hollow shaft, and the upper end of the lifting screw is driven to rotate by the lifting drive motor installed on the top of the tank body, the number of the guide rods is several and evenly distributed around the tank body, the upper and lower ends of the guide rods are respectively connected to the top and bottom ends of the tank body, and the guide rods longitudinally pass through the upper seat plate and the lower seat plate and guide the upper seat plate and the lower seat plate; the spray elution device is arranged in the ion elution chamber and elutes the rotating loading cylinder to remove target ions on the ion exchange resin.

2. The waste liquid recovery and treatment equipment for stainless steel pickling line according to claim 1, characterized in that: The sealing device includes a displacement drive motor, a sealing plate, an annular rack, and a displacement screw. The sealing plate is a fan-shaped structure, and the number of sealing plates is several and annularly distributed in the inner cavity of the convex shell. At least two guide grooves are provided on the sealing plate, and one end of the guide groove extends to the center of the tank body. A guide shaft is longitudinally passed through the guide groove. The upper and lower ends of the guide shaft are fixedly connected to the upper and lower ends of the convex shell. Two positioning blocks are provided on the guide shaft that are fitted with the upper and lower ends of the sealing plate. A sealing rubber sleeve is provided on one end and both sides of the inner side of the sealing plate. The sealing rubber sleeve cooperates with the sealing groove to achieve sealing, and the sealing plates are mutually pressed by the sealing rubber sleeve. Pressure seal; A threaded plate is provided on each of the sealing plates, and a displacement screw is horizontally threadedly connected to each of the threaded plates. The direction of the displacement screw is consistent with the direction of the guide groove. One end of the displacement screw is rotatably arranged on the inner wall of one end of the convex shell through a shaft sleeve, and a rotating gear is provided on the displacement screw, one end of which passes through the side wall of the convex shell and is provided with a driven gear, and the driven gear is meshed with a driving gear, and the driving gear is driven to rotate by a displacement drive motor installed on the convex shell; One end of the outer side of the annular rack is slidably arranged on the inner wall of one end of the convex shell through a slide rail, and the annular rack is meshed with multiple rotating gears respectively.

3. The waste liquid recovery and treatment equipment for stainless steel pickling line according to claim 2, characterized in that: An annular inner convex strip is provided on the inner walls of the upper and lower ends of one end of the convex shell close to the tank body, and the upper and lower ends of the sealing rubber sleeve are provided with sealing convex strips that match the inner convex strip, so that when the sealing rubber sleeve is matched with the sealing groove, the sealing convex strip is pressed against the inner convex strip to achieve sealing of the interior of the convex shell.

4. The waste liquid recovery and treatment equipment for stainless steel pickling line according to claim 1, characterized in that: The transmission assembly 1 and the transmission assembly 2 both include a bevel gear and a gear sleeve seat. The bevel gear is a straight bevel gear, and the bevel gear is respectively arranged on the output shaft of the rotating motor and the lower end of the rotary drive assembly; the gear sleeve seat is respectively arranged at the top end of the loading cylinder and the bottom end of the control shaft, and a conical groove adapted to the size of the bevel gear is provided at one end of the gear sleeve seat close to the bevel gear. A plurality of straight tooth blocks matching the bevel gear are radially distributed on the side wall of the conical groove. The meshing connection between the gear sleeve seat and the bevel gear is achieved by sleeve engagement between the gear sleeve seat and the bevel gear, thereby realizing that the rotating motor drives the hollow shaft to rotate through the transmission assembly 1 and the rotary drive assembly drives the loading cylinder to rotate through the transmission assembly 2.

5. The waste liquid recovery and treatment equipment for stainless steel pickling line according to claim 4 is characterized in that: The rotary drive assembly includes a servo motor, a rotating shaft, a linkage gear, and a transmission gear. The number of the rotating shafts is several and they are distributed in a ring shape, and the position of each rotating shaft corresponds to a loading cylinder. The upper end of the rotating shaft is rotatably set at the top of the tank body, and the bevel gear is set at the bottom end of each rotating shaft. Several linkage gears are provided on the rotating shaft; the center of the transmission gear is rotatably set at the upper end of the lifting screw through a bearing, and the transmission gear is respectively engaged with each linkage gear; the servo motor is set at the top of the tank body and the output shaft of the servo motor is fixedly connected to one of the rotating shafts, so that the servo motor drives each rotating shaft to rotate through the cooperation between the linkage gear and the transmission gear.

6. The waste liquid recovery and treatment equipment for stainless steel pickling line according to claim 1, characterized in that: The spray elution assembly includes an annular tube and a spray pipe. The annular tube is horizontally arranged in the ion elution chamber and is connected to the external water supply pipe. Several spray pipes are longitudinally arranged on the annular tube. The position of each spray pipe corresponds to a loading cylinder, and several spray heads are longitudinally arranged on the side of the spray pipe close to the loading cylinder.

7. The waste liquid recovery and treatment equipment for stainless steel pickling line according to claim 1, characterized in that: The loading cylinder is filled with ion exchange resin, and a plurality of holes are opened on the surface of the loading cylinder. The size of the holes is smaller than the particle size of the ion exchange resin.

Images