An environmentally friendly pickling line waste liquid treatment and recovery system

Abstract

The present invention relates to an environmentally friendly pickling line waste liquid treatment and recovery system, comprising a waste acid settling device, a filtering device, an ion exchange resin device, and an acid storage tank, which are sequentially connected. The waste acid settling device is used to settle impurity particles in the pickling waste liquid for preliminary removal. The waste acid settling device includes a settling tank, wherein a partition plate is arranged transversely at the upper end of the settling tank, and the partition plate is provided with a flow hole. A movable plate is provided on either side of the partition plate at the lower end of the settling tank. The bottom ends of the movable plates are hingedly connected to a hinge seat installed at the bottom end of the settling tank via an articulated joint and an articulated shaft. The articulated shaft passes through the side wall of the settling tank and is connected to the output shaft of a tilting drive motor installed on the outer wall of the settling tank, so that the tilting drive motor drives the movable plate to rotate and causes the upper end of the movable plate to abut against the inner wall of the settling tank or the partition plate to achieve sealing. This forms a closed space to facilitate the removal of waste acid impurities deposited at the bottom of the settling tank, thereby ensuring the efficiency of acid liquid treatment.

Description

Technical Field

[0001] The patent of this invention relates to the technical field of pickling waste liquid treatment equipment, and specifically to an environmentally friendly pickling line waste liquid treatment and recovery system. 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.

[0003] Patent No.: CN201910633536.X, discloses an acid recovery and purification system for pickling waste liquid. In the order of treating the pickling waste liquid, the system comprises: a waste acid settling device, a filtration device, an ion exchange resin recovery device, and further comprises a first storage tank and a second storage tank. The filtration device is a U-shaped hollow fiber membrane filtration device, comprising a membrane shell, an upper end plate, a central tube, at least two membrane support frames and a hollow fiber membrane. A detachable basket is provided in the waste acid settling device, and a precipitation adsorption portion with a porous structure is provided on the bottom surface of the basket. The ion exchange resin recovery device in this application 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, affecting the desorption efficiency. In addition, the waste acid impurities precipitated in the waste acid precipitation tank of this application cannot be cleaned in time, and the waste acid settling device cannot work normally during cleaning, affecting the waste liquid treatment efficiency. Summary of the Invention

[0004] In response to the above-mentioned problems, the present invention discloses an environmentally friendly pickling line waste liquid treatment and recovery system, which can achieve regular maintenance and regeneration of the ion exchange resin device to improve the service life and removal efficiency of the ion exchange resin, and adopts an adjustable waste liquid sedimentation device to clean up the precipitated waste acid impurities during the filtration process.

[0005] The specific technical solutions are as follows:

[0006] An environmentally friendly pickling line waste liquid treatment and recovery system includes a waste acid sedimentation device, a filtering device, an ion exchange resin device and an acid storage tank connected in sequence. The waste acid sedimentation device is used to sediment impurity particles in the pickling waste liquid for preliminary removal. The filtering device is used to further remove impurity particles in the pickling waste liquid. The ion exchange resin device is used to adsorb acid in the waste liquid and then input water for desorption to form acid. The acid storage tank is used to store the acid eluted by the centrifugal exchange resin device.

[0007] The waste acid sedimentation device includes a sedimentation tank, the side walls of the sedimentation tank at both ends are inclined outward, the upper ends of the side walls of the sedimentation tank at both ends are respectively provided with a liquid inlet pipe and a liquid discharge pipe, at least one partition plate is arranged horizontally at the upper end of the sedimentation tank, the partition plate is provided with a flow hole, and positioning grooves are symmetrically provided on both sides of the lower end of the partition plate and on the inner walls of both ends of the sedimentation tank; a movable plate is respectively provided on both sides of the partition plate at the lower end of the sedimentation tank, and both sides of the movable plate extend to the inner wall of the sedimentation tank, and the upper end of each movable plate is provided with a size and shape of the same as the positioning groove The bottom end of each movable plate is hingedly connected to a hinge seat installed at the bottom end of the sedimentation tank through a hinge joint and a hinge shaft, and the hinge shaft horizontally passes through the side wall of the sedimentation tank and is connected to the output shaft of the flip drive motor installed on the outer wall of the sedimentation tank, so that the flip drive motor drives the movable plate to rotate and makes the sealing block on the upper end of the movable plate rest against the positioning groove on the inner wall of the sedimentation tank or on the partition plate to achieve sealing; a number of drainage pipes are arranged horizontally on the side wall of the lower end of the sedimentation tank, and each drainage pipe is distributed on both sides of the movable plate.

[0008] Furthermore, sealing bosses are obliquely provided on both inner walls of the sedimentation tank, and the sealing bosses are fitted to one side surface of the movable plate to achieve sealing.

[0009] Furthermore, the ion exchange resin device 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 inner cavity of the tank body are respectively provided with an ion elution chamber and an ion exchange chamber. The tank body is located at the lower end of the ion elution chamber and is provided with an acid discharge pipe, which is connected to the acid storage tank through a pipeline. The upper and lower ends of the tank body are located at the ion exchange chamber and 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 The assembly includes a lifting drive motor, a lifting screw rod, 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. The hollow shaft is provided with a plurality of stirring blades, 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 A sealing groove is provided to cooperate with the sealing 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 to 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 assembly 2. When the loading cylinder rises to the ion elution chamber, the rotary drive assembly drives the loading cylinder to rotate through the transmission assembly 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 on the top of the upper seat plate The threaded sleeve at the end 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 a 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.

[0010] 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.

[0011] 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.

[0012] 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.

[0013] 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.

[0014] 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.

[0015] The beneficial effects of the present invention are embodied in:

[0016] The present invention proposes a system for recycling and treating pickling waste liquid, which adopts an ion exchange separation method to effectively purify and recycle the pickling waste liquid. The pickling efficiency is high, and the ion exchange resin can be regularly maintained to achieve the effect of repeated use, thereby reducing the cost of use.

[0017] The waste liquid sedimentation device of the present invention forms a closed space by arranging a reversible movable plate in the sedimentation tank, and the movable plate cooperates with the inner wall or partition plate of the sedimentation tank to facilitate cleaning of waste acid impurities deposited at the bottom of the sedimentation tank, so that the sedimentation tank can work normally and the acid treatment efficiency is guaranteed.

[0018] The ion exchange resin device of the present invention is provided with an elution chamber and an exchange chamber at the upper and lower ends of the tank body, thereby achieving adsorption of acid liquid and being able to perform elution treatment regularly, thereby realizing the recycling of 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

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 It is a side view of the spent acid settling device in the present invention.

[0021] Figure 3 It is a cross-sectional view of the waste acid settling device in the present invention.

[0022] Figure 4 This is a schematic structural diagram of the waste acid sedimentation device after the movable plate is flipped over in the present invention.

[0023] Figure 5 It is a structural schematic diagram of the ion exchange resin device in the present invention.

[0024] Figure 6 It is a transverse cross-sectional view of the tank body in the present invention.

[0025] Figure 7 It is a schematic structural diagram of the sealing device and the lower seat plate in the present invention.

[0026] Figure 8 for Figure 5 A magnified schematic diagram of .

[0027] Figure 9 for Figure 5 Enlarged schematic diagram of point B.

[0028] Figure 10 for Figure 5 Enlarged schematic diagram of point C.

[0029] Waste acid settling device 1, sedimentation tank 11, liquid inlet pipe 101, liquid discharge pipe 102, positioning groove 103, hinge seat 104, sealing protrusion 105, impurity discharge pipe 106, partition plate 12, flow hole 121, movable plate 13, hinge head 131, sealing rubber block 132, and turning drive motor 14;

[0030] Filter device 2;

[0031] Ion exchange resin device 3, ion elution chamber 301, ion exchange chamber 302, tank body 31, acid discharge pipe 311, water inlet pipe 312, drain pipe 313, outer convex shell 314, inner convex strip 3141, guide shaft 3142, positioning block 3143, loading cylinder 32;

[0032] Sealing device 33, displacement drive motor 331, driving gear 3311, sealing plate 332, guide groove 3321, sealing rubber sleeve 3322, sealing ridge 3323, annular rack 333, displacement screw 334, rotating gear 3341, driven gear 3342, threaded plate 335;

[0033] Spray elution assembly 34, annular tube 341, spray pipe 342, spray head 343;

[0034] Lifting assembly 35, lifting drive motor 351, lifting screw 352, guide rod 353, upper base plate 354, threaded sleeve 3541, lower base plate 355, hollow shaft 356, stirring blade 3561, sealing groove 357, bevel gear 358, gear sleeve seat 359, conical groove 3591, spur gear block 3592, rotation drive motor 36, rotation drive assembly 37, servo motor 371, rotating shaft 372, linkage gear 373, transmission gear 374;

[0035] Acid storage tank 4. DETAILED DESCRIPTION

[0036] 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.

[0037] 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.

[0038] like Figure 1 As shown, an environmentally friendly pickling line waste liquid treatment and recovery system includes a waste acid sedimentation device 1, a filtering device 2, an ion exchange resin device 3 and an acid storage tank 4 connected in sequence. The waste acid sedimentation device 1 is used to settle the impurity particles in the pickling waste liquid for preliminary removal, the filtering device 2 is used to further remove the impurity particles in the pickling waste liquid, the ion exchange resin device 3 is used to adsorb the acid in the waste liquid, and then input water for desorption to form acid, and the acid storage tank 4 is used to store the acid eluted by the centrifugal exchange resin device.

[0039] like Figure 2-4As shown, in this embodiment, the waste acid sedimentation device 1 includes a sedimentation tank 11, and the side walls of the sedimentation tank 11 are inclined outward. The upper ends of the front and rear end side walls of the sedimentation tank 11 are respectively provided with a liquid inlet pipe 101 and a liquid discharge pipe 102. At least one partition plate 12 is arranged horizontally at the upper end of the sedimentation tank 11, and a flow hole 121 is opened on the partition plate 12. Positioning grooves 103 are symmetrically provided on both sides of the lower end of the partition plate 12 and on the inner walls of the front and rear ends of the sedimentation tank 11; a movable plate 13 is respectively provided on both sides of the partition plate 12 at the lower end of the sedimentation tank 11, and both sides of the movable plate 13 extend to the inner wall of the sedimentation tank 11. The upper end of each movable plate 13 is provided with a sealing rubber block 132 that is adapted to the size and shape of the positioning groove 103, and the bottom end of each movable plate 13 is hinged. The head 131 is hingedly connected to the hinge seat 104 installed at the bottom end of the sedimentation tank 11 in conjunction with the hinge shaft, and the hinge shaft horizontally passes through the side wall of the sedimentation tank 11 and is connected to the output shaft of the flip drive motor 14 installed on the outer wall of the sedimentation tank 11, so that the flip drive motor 14 drives the movable plate 13 to rotate and makes the sealing block 132 at the upper end of the movable plate 13 rest against the positioning groove 103 on the inner wall of the sedimentation tank 11 or the partition plate 12 to achieve sealing, and sealing bosses 105 are inclined on the inner walls of both sides of the sedimentation tank 11, and the sealing bosses 105 are fitted with one side surface of the movable plate 13 to further achieve sealing; a number of drainage pipes 106 are horizontally arranged on the side wall of the lower end of the sedimentation tank 11, and each drainage pipe 106 is distributed on both sides of the movable plate 13. When the movable plate 13 is in contact with the inner wall of the sedimentation tank 11, a closed space is formed between the movable plate 13 and the inner wall of the lower end of the sedimentation tank 11. When two movable plates 13 are in contact with a partition plate 12, a closed space is also formed between the movable plates 13. The closed space discharges waste acid impurity particles through the discharge pipe 106.

[0040] In this embodiment, the filter device 2 adopts a multi-stage filter, and the filter element of the multi-stage filter adopts a ceramic filter element and an activated carbon filter element to further filter the fine impurity particles in the waste liquid.

[0041] like Figure 5-6As shown, the ion exchange resin device 3 in this embodiment includes a tank body 31, a loading cylinder 32, a sealing device 33, a spray elution component 34, and a lifting component 35. The upper and lower ends of the inner cavity of the tank body 31 are respectively provided with an ion elution chamber 301 and an ion exchange chamber 302. The tank body 31 is located at the lower end of the ion elution chamber 301 and is provided with an acid discharge pipe 311. The acid discharge pipe 311 is connected to the acid storage tank 4 through a pipeline for recovering the eluted acid water. The upper and lower ends of the ion exchange chamber 302 of the tank body 31 are respectively provided with a water inlet pipe 312 and a drain pipe 313. The water inlet pipe 312 is used to discharge the filtered waste liquid, and the drain pipe 313 is used to discharge the waste water after ion exchange separation; the side wall of the tank body 31 between the ion elution chamber 301 and the ion exchange chamber 302 is provided with an annular convex shell 314, and a sealing device 33 is provided in the convex shell 314; the lifting component 35 includes a lifting component The drive motor 351, the lifting screw rod 352, the guide rod 353, the upper seat plate 354, the lower seat plate 355 and the hollow shaft 356. The upper seat plate 354 and the lower seat plate 355 are centrally connected to the hollow shaft 356 for longitudinal rotation. The hollow shaft 356 is provided with a plurality of stirring blades 3561. The stirring blades 3561 stir the waste liquid in the ion exchange chamber 302 so that it is in full contact with the ion exchange resin; the bottom end of the hollow shaft 356 passes through the lower seat plate 355 and is connected to the output end of the rotary drive motor 36 installed at the bottom of the tank body 31 through a detachable transmission component. When the lower seat plate 355 descends into the ion exchange chamber 302, the rotary drive motor 36 drives the hollow shaft 356 and the stirring blades 3561 to rotate through the transmission component; the side walls of the upper seat plate 354 and the lower seat plate 355 are provided with an annular sealing groove 357 that cooperates with the sealing device 33.

[0042] A plurality of loading cylinders 32 are longitudinally arranged between the upper seat plate 354 and the lower seat plate 355. The plurality of loading cylinders 32 are distributed in a ring shape. The loading cylinders 32 are filled with ion exchange resin. A plurality of holes are opened on the surface of the loading cylinder 32. The hole size is smaller than the particle size of the ion exchange resin. The upper and lower ends of the loading cylinder 32 are rotatably connected to the upper seat plate 354 and the lower seat plate 355 respectively. The upper end of the loading cylinder 32 passes through the upper seat plate 354 and is connected to the rotation drive component 37 installed on the top of the tank body 31 through a detachable transmission component 2. When the loading cylinder 32 rises to the ion elution chamber 301, the rotation drive component 37 drives the loading cylinder 32 to rotate through the transmission component 2; the lifting screw 352 is longitudinally arranged in the center of the tank body 31. The lower end of the lifting screw 352 is threadedly connected to the threaded sleeve 3541 installed at the top center of the upper seat plate 354, and the lifting screw 352 passes through the upper seat plate 354. The top end extends downward into the hollow shaft 356, and the upper end of the lifting screw rod 352 is driven to rotate by the lifting drive motor 351 installed on the top of the tank body 31. There are several guide rods 353 and they are evenly distributed around the tank body 31. The upper and lower ends of the guide rods 353 are respectively connected to the top and bottom ends of the tank body 31, and the guide rods 353 longitudinally penetrate the upper seat plate 354 and the lower seat plate 355 and guide the upper seat plate 354 and the lower seat plate 355; the spray elution device is arranged in the ion elution chamber 301 and elutes the rotating loading cylinder 32 to remove the target ions on the ion exchange resin, and when the loading cylinder 32 rises into the ion elution chamber 301, the sealing device 33 cooperates with the sealing groove 357 of the lower seat plate 355 for sealing, and when the loading cylinder 32 descends into the ion exchange chamber 302, the sealing device 33 cooperates with the sealing groove 357 of the upper seat plate 354 for sealing.

[0043] like Figure 10As shown, both transmission component 1 and transmission component 2 include a bevel gear 358 and a gear sleeve seat 359. The bevel gear 358 is a straight bevel gear 358. The bevel gear 358 is respectively arranged on the output shaft of the rotating motor and the lower end of the rotating drive component 37; the gear sleeve seat is respectively arranged at the top end of the loading cylinder 32 and the bottom end of the control shaft. A conical groove 3591 that is adapted to the size of the bevel gear 358 is opened at one end of the gear sleeve seat 359 close to the bevel gear 358. A number of straight tooth blocks 3592 that match the bevel gear 358 are radially distributed on the side wall of the conical groove 3591. The meshing connection between the gear sleeve seat 359 and the bevel gear 358 is achieved by the engagement of the gear sleeve seat 359 with the bevel gear 358, thereby realizing that the rotating motor drives the hollow shaft 356 to rotate through the transmission component 1 and the rotating drive component 37 drives the loading cylinder 32 to rotate through the transmission component 2. In order to avoid the phenomenon of tooth jamming when the bevel gear 358 and the gear sleeve seat 359 are engaged, an elastic connection can be used between the shaft end of the bevel gear 358 and the output shaft of the rotating motor, and between the shaft end of the bevel gear 358 and the rotating shaft 372. For example, an elastic sleeve pin coupling can be used to enable the bevel gear 358 to undergo elastic displacement on the output shaft of the rotating motor and the rotating shaft 372 when subjected to axial force, and when the bevel gear 358 and the gear sleeve seat 359 are accurately engaged, the bevel gear 358 is reset under the elastic force.

[0044] like Figure 9 As shown, the rotation drive assembly 37 includes a servo motor 371, a rotating shaft 372, a linkage gear 373, and a transmission gear 374. There are several rotating shafts 372 and they are distributed in a ring shape, and the position of each rotating shaft 372 corresponds to a loading cylinder 32. The upper end of the rotating shaft 372 is rotatably set at the top of the tank body 31, and the bevel gear 358 is respectively set at the bottom end of each rotating shaft 372. Several linkage gears 373 are provided on the rotating shaft 372; the center of the transmission gear 374 is rotatably set at the upper end of the lifting screw 352 through a bearing, and the transmission gear 374 is respectively engaged with each linkage gear 373; the servo motor 371 is set at the top of the tank body 31 and the output shaft of the servo motor 371 is fixedly connected to one of the rotating shafts 372, so that the servo motor 371 drives each rotating shaft 372 to rotate through the cooperation between the linkage gear 373 and the transmission gear 374.

[0045] like Figure 6-8As shown, the sealing device 33 includes a displacement drive motor 331, a sealing plate 332, an annular rack 333, and a displacement screw 334. The sealing plate 332 is a fan-shaped structure, and the number of the sealing plates 332 is several and annularly distributed in the inner cavity of the convex shell 314. The adjacent side walls of the two sealing plates 332 are parallel to each other. At least two guide grooves 3321 are provided on the sealing plate 332. One end of the guide groove 3321 extends to the center of the tank body 31. A guide shaft 3142 is longitudinally passed through the guide groove 3321. The upper and lower ends of the guide shaft 3142 are fixedly connected to the upper and lower ends of the convex shell 314. The guide shaft 3142 is provided with two positioning blocks 3143 that are fitted with the upper and lower ends of the sealing plate 332. The two positioning blocks 3143 are used to adjust the sealing plate 332. 32 is positioned so that the sealing plate 332 is slidably arranged in the convex shell 314 through the guide shaft 3142 and the sliding groove. A sealing rubber sleeve 3322 is provided at one inner end and both sides of the sealing plate 332. The sealing rubber sleeve 3322 cooperates with the sealing groove 357 to achieve sealing, and the sealing plates 332 are pressed against each other by the sealing rubber sleeve 3322 to seal, and an annular inner convex strip 3141 is provided on the inner wall of the upper and lower ends of the end of the convex shell 314 close to the tank body 31, and a sealing convex strip 3323 cooperating with the inner convex strip 3141 is provided at the upper and lower ends of the sealing rubber sleeve 3322, so that when the sealing rubber sleeve 3322 cooperates with the sealing groove 357, the sealing convex strip 3323 presses on the inner convex strip 3141 to achieve sealing of the inside of the convex shell 314.

[0046] The sealing plate 332 is vertically provided with a threaded plate 335 at the center, and the threaded plate 335 is horizontally threadedly connected to a displacement screw 334. The direction of the displacement screw 334 is consistent with the direction of the guide groove 3321. One end of the displacement screw 334 is rotatably set on the inner wall of one end of the convex shell 314 through a shaft sleeve, and a rotating gear 3341 is provided on the displacement screw 334. One end of one displacement screw 334 passes through the side wall of the convex shell 314 and is provided with a driven gear 3342. The driven gear 3342 is meshed with a driving gear 3311, and the driving gear 3311 is driven to rotate by a displacement drive motor 331 installed in the convex shell 314; the outer end of the annular rack 333 slides on the slide rail The drive motor 331 drives each screw rod to rotate through the annular rack 333, so that each sealing plate 332 is synchronously displaced toward the tank body 31, so that the sealing rubber sleeve 3322 cooperates with the sealing groove 357 to perform sealing, and when the loading cylinder 32 of the ion exchange resin is in the ion exchange chamber 302, the sealing device 33 cooperates with the upper seat plate 354 to perform sealing, and when the loading cylinder 32 is in the ion elution chamber 301, the sealing device 33 cooperates with the lower seat plate 355 to perform sealing, thereby realizing the separation and sealing of the ion elution chamber 301 and the ion exchange chamber 302.

[0047] The spray elution assembly 34 includes a ring tube 341 and a spray tube 342. The ring tube 341 is horizontally arranged in the ion elution chamber 301. The ring tube 341 is connected to the external water supply pipe. Several spray tubes 342 are longitudinally arranged on the ring tube 341. The spray tubes 342 are fixed to the inner wall of the tank body 31 through a fixed bracket. The position of each spray tube 342 corresponds to a loading cylinder 32, and several spray heads 343 are longitudinally arranged on the side of the spray tube 342 close to the loading cylinder 32. The rotating loading cylinder 32 is impacted by the spray head 343 to achieve the effect of eluting the target ions.

[0048] 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. An environmentally friendly pickling line waste liquid treatment and recovery system, comprising a waste acid settling device (1), a filtering device (2), an ion exchange resin device (3) and an acid storage tank (4) connected in sequence, wherein the waste acid settling device (1) is used to settle impurity particles in the pickling waste liquid for preliminary removal, the filtering device (2) is used to further remove impurity particles in the pickling waste liquid, the ion exchange resin device (3) is used to adsorb acid in the waste liquid, and then input water for desorption to form acid, and the acid storage tank (4) is used to store the acid eluted by the centrifugal exchange resin device; characterized in that The ion exchange resin device (3) comprises a tank body (31), a loading cylinder (32), a sealing device (33), a spray elution assembly (34), and a lifting assembly (35). The upper and lower ends of the inner cavity of the tank body (31) are respectively provided with an ion elution chamber (301) and an ion exchange chamber (302). The tank body (31) is located at the lower end of the ion elution chamber (301) and is provided with an acid discharge pipe (311). The acid discharge pipe (311) is connected to the acid storage tank (4) through a pipeline. The upper and lower ends of the tank body (31) are located at the ion exchange chamber (302) and are respectively provided with a water inlet pipe (312) and a drain pipe (311). 3); the tank body (31) is provided with an annular convex shell (314) on the side wall between the ion elution chamber (301) and the ion exchange chamber (302), and the sealing device (33) is provided in the convex shell (314); the lifting assembly (35) includes a lifting drive motor (351), a lifting screw (352), a guide rod (353), an upper seat plate (354), a lower seat plate (355) and a hollow shaft (356), the center between the upper seat plate (354) and the lower seat plate (355) is longitudinally rotated to connect the hollow shaft (356), and the hollow shaft (3 56) is provided with a plurality of stirring blades (3561), and the bottom end of the hollow shaft (356) passes through the lower seat plate (355) and is connected to the output end of the rotary drive motor (36) installed at the bottom of the tank body (31) through a detachable transmission component. When the lower seat plate (355) descends into the ion exchange chamber (302), the rotary drive motor (36) drives the hollow shaft (356) and the stirring blades (3561) to rotate through the transmission component. The side walls of the upper seat plate (354) and the lower seat plate (355) are both provided with a sealing groove (33) that cooperates with the sealing device (33). 57); a plurality of loading cylinders (32) are longitudinally arranged between the upper seat plate (354) and the lower seat plate (355), and the loading cylinder (32) is filled with ion exchange resin. The upper and lower ends of the loading cylinder (32) are rotatably connected to the upper seat plate (354) and the lower seat plate (355), respectively, and the upper end of the loading cylinder (32) is connected to the rotary drive assembly (37) installed on the top of the tank body (31) through a detachable transmission assembly 2. When the loading cylinder (32) rises into the ion elution chamber (301), the rotary drive assembly (37) drives the loading cylinder (32) to rotate through the transmission assembly 2;The lifting screw rod (352) is longitudinally arranged at the center of the tank body (31), and the lower end of the lifting screw rod (352) is threadedly connected to the threaded sleeve (3541) installed at the center of the top of the upper seat plate (354), and the lifting screw rod (352) passes through the top of the upper seat plate (354) and extends downward into the hollow shaft (356). The upper end of the lifting screw rod (352) is driven to rotate by the lifting drive motor (351) installed at the top of the tank body (31). The number of the guide rods (353) is There are a plurality of guide rods (353) evenly distributed around the tank body (31), and the upper and lower ends of the guide rods (353) are respectively connected to the top and bottom ends of the tank body (31), and the guide rods (353) longitudinally penetrate the upper seat plate (354) and the lower seat plate (355) and guide the upper seat plate (354) and the lower seat plate (355); the spray elution device is arranged in the ion elution chamber (301) and performs elution treatment on the rotating loading cylinder (32) to remove target ions on the ion exchange resin.

2. The environmentally friendly pickling line waste liquid treatment and recovery system according to claim 1, characterized in that: The waste acid sedimentation device (1) comprises a sedimentation tank (11), the side walls at both ends of the sedimentation tank (11) are inclined outward, the upper ends of the side walls at both ends of the sedimentation tank (11) are respectively provided with a liquid inlet pipe (101) and a liquid outlet pipe (102), at least one partition plate (12) is arranged transversely at the upper end of the sedimentation tank (11), the partition plate (12) is provided with a flow hole (121), and positioning grooves (103) are symmetrically provided on both sides of the lower end of the partition plate (12) and on the inner walls at both ends of the sedimentation tank (11); a movable plate (13) is respectively provided on both sides of the partition plate (12) at the lower end of the sedimentation tank (11), the two sides of the movable plate (13) extend to the inner wall of the sedimentation tank (11), and the upper end of each movable plate (13) is provided with a size and shape of the same as the positioning groove (103). The bottom end of each movable plate (13) is hingedly connected to a hinge seat (104) installed at the bottom end of the sedimentation tank (11) through a hinge joint (131) and a hinge shaft, and the hinge shaft horizontally penetrates the side wall of the sedimentation tank (11) and is connected to the output shaft of the flip drive motor (14) installed on the outer wall of the sedimentation tank (11), so that the flip drive motor (14) drives the movable plate (13) to rotate and makes the sealing rubber block (132) at the upper end of the movable plate (13) abut against the positioning groove (103) on the inner wall of the sedimentation tank (11) or on the partition plate (12) to achieve sealing; a plurality of drainage pipes (106) are arranged horizontally on the side wall of the lower end of the sedimentation tank (11), and each drainage pipe (106) is distributed on both sides of the movable plate (13).

3. The environmentally friendly pickling line waste liquid treatment and recovery system according to claim 2, characterized in that: Sealing convex seats (105) are provided obliquely on both inner walls of the sedimentation tank (11), and the sealing convex seats (105) are fitted with one side surface of the movable plate (13) to achieve sealing.

4. The environmentally friendly pickling line waste liquid treatment and recovery system according to claim 1, characterized in that: The sealing device (33) includes a displacement drive motor (331), a sealing plate (332), an annular rack (333), and a displacement screw (334). The sealing plate (332) is a fan-shaped structure, and the number of sealing plates (332) is several and annularly distributed in the inner cavity of the convex shell (314). At least two guide grooves (3321) are provided on the sealing plate (332), one end of the guide groove (3321) extends to the center of the tank body (31), and the guide groove (3321) is provided on the inner cavity of the convex shell (314). ) are longitudinally penetrated by a guide shaft (3142), the upper and lower ends of the guide shaft (3142) are fixedly connected to the upper and lower ends of the convex shell (314), the guide shaft (3142) is provided with two positioning blocks (3143) arranged in contact with the upper and lower ends of the sealing plate (332), the inner end and both sides of the sealing plate (332) are provided with a sealing rubber sleeve (3322), the sealing rubber sleeve (3322) cooperates with the sealing groove (357) to achieve sealing, and the sealing plates (332) are connected by the sealing rubber sleeve ( 3322) press against each other to seal; the sealing plate (332) is provided with a threaded plate (335), and the threaded plate (335) is horizontally threadedly connected to a displacement screw (334), the direction of the displacement screw (334) is consistent with the direction of the guide groove (3321), one end of the displacement screw (334) is rotatably arranged on the inner wall of one end of the convex shell (314) through a shaft sleeve, and the displacement screw (334) is provided with a rotating gear (3341), one of the displacement screws (334) is connected to the inner wall of one end of the convex shell (314). The end of the annular rack (333) passes through the side wall of the convex shell (314) and is provided with a driven gear (3342), the driven gear (3342) is meshedly connected to the driving gear (3311), and the driving gear (3311) is driven to rotate by a displacement drive motor (331) installed on the convex shell (314); the outer end of the annular rack (333) is slidably arranged on the inner wall of one end of the convex shell (314) through a slide rail, and the annular rack (333) is respectively meshedly connected with multiple rotating gears (3341).

5. The environmentally friendly pickling line waste liquid treatment and recovery system according to claim 4, characterized in that: Annular inner convex strips (3141) are provided on the inner walls of the upper and lower ends of one end of the outer convex shell (314) close to the tank body (31), and sealing convex strips (3323) that match the inner convex strips (3141) are provided on the upper and lower ends of the sealing rubber sleeve (3322), so that when the sealing rubber sleeve (3322) is matched with the sealing groove (357), the sealing convex strips (3323) press against the inner convex strips (3141), thereby achieving sealing of the interior of the outer convex shell (314).

6. The environmentally friendly pickling line waste liquid treatment and recovery system according to claim 1, characterized in that: The transmission assembly 1 and the transmission assembly 2 both include a bevel gear (358) and a gear sleeve seat (359), wherein the bevel gear (358) is a straight bevel gear (358), and the bevel gear (358) is respectively arranged on the output shaft of the rotary motor and the lower end of the rotary drive assembly (37); the gear sleeve seat is respectively arranged at the top end of the loading cylinder (32) and the bottom end of the control shaft, and the gear sleeve seat (359) is provided with a gear sleeve having a size matching that of the bevel gear (358) at one end close to the bevel gear (358). A conical groove (3591) is provided with a plurality of straight tooth blocks (3592) radially distributed on the side wall of the conical groove (3591) and matched with the bevel gear (358). The tooth sleeve seat (359) and the bevel gear (358) are connected by the tooth sleeve seat (359) and the bevel gear (358), thereby realizing the meshing connection between the tooth sleeve seat (359) and the bevel gear (358), thereby realizing the rotation of the hollow shaft (356) driven by the rotating motor through the transmission component 1 and the rotation drive component (37) driven by the loading cylinder (32) through the transmission component 2.

7. The environmentally friendly pickling line waste liquid treatment and recovery system according to claim 6, characterized in that: The rotary drive assembly (37) includes a servo motor (371), a rotating shaft (372), a linkage gear (373), and a transmission gear (374). The rotating shafts (372) are arranged in a plurality and are distributed in a ring shape. The position of each rotating shaft (372) corresponds to a loading cylinder (32). The upper end of the rotating shaft (372) is rotatably arranged at the top of the tank body (31). The bottom end of each rotating shaft (372) is respectively provided with the bevel gear (358). The rotating shaft (372) is provided with a plurality of linkage gears (373). 3); the center of the transmission gear (374) is rotatably arranged on the upper end of the lifting screw (352) through a bearing, and the transmission gear (374) is respectively engaged with each linkage gear (373); the servo motor (371) is arranged on the top of the tank body (31) and the output shaft of the servo motor (371) is fixedly connected to one of the rotating shafts (372), so that the servo motor (371) drives each rotating shaft (372) to rotate through the cooperation between the linkage gear (373) and the transmission gear (374).

8. The environmentally friendly pickling line waste liquid treatment and recovery system according to claim 1, characterized in that: The spray elution assembly (34) includes an annular tube (341) and a spray tube (342). The annular tube (341) is horizontally arranged in the ion elution chamber (301). The annular tube (341) is connected to an external water supply pipe. A plurality of spray tubes (342) are longitudinally arranged on the annular tube (341). The position of each spray tube (342) corresponds to a loading cylinder (32). A plurality of spray heads (343) are longitudinally arranged on one side of the spray tube (342) close to the loading cylinder (32).

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