Spraying device for modification treatment of electrode surface of electrolytic bath

Abstract

A spraying device for modification treatment of an electrode surface of an electrolytic bath relates to the technical field of surface spraying equipment and comprises a mounting base, the mounting base is a horizontally-arranged square seat, and a conveying and feeding assembly, a positioning and clamping assembly, a sliding spraying assembly and a rotating roll coating assembly are arranged on the mounting base; a coating workbench is fixedly arranged above the mounting base and is a horizontally-arranged square table, a square coating limiting opening is formed in one side of the upper surface of the coating workbench, and the coating limiting opening communicates with the longitudinal side end face of the coating workbench. The problems that when spraying equipment in the traditional technology is used for surface modification spraying of the nickel net electrode of the electrolytic cell, the spraying mode is single, uniform coating of a modified catalyst cannot be achieved, feeding and discharging of the nickel net electrode are inconvenient, spraying positioning is not accurate, and the natural curing time of paint is long are solved.

Description

Technical Field

[0001] The invention relates to the technical field of surface spraying equipment, and in particular to a spraying device used for surface modification of electrolytic cell electrodes. Background Art

[0002] Hydrogen production by water electrolysis is a relatively convenient method for producing hydrogen. Direct current is passed into an electrolytic cell filled with electrolyte, and water molecules undergo electrochemical reactions on the electrodes, decomposing into hydrogen and oxygen.

[0003] There are three main technologies for producing hydrogen by electrolysis of water: alkaline electrolysis, proton membrane electrolysis, and high-temperature electrolysis. Among them, high-temperature electrolysis technology has high efficiency and low energy consumption, but high investment cost; proton membrane electrolysis technology has a fast start-up time, but relatively high efficiency and energy consumption; alkaline electrolysis technology has the lowest investment cost, but is not as good as the other two technologies in terms of efficiency and energy consumption. In the existing large-scale process of producing hydrogen by electrolysis of water, the low-cost alkaline electrolysis technology is mostly used.

[0004] The core component of alkaline electrolysis technology is the electrolyzer, which mainly includes plates, frames, diaphragms, electrodes and BOP auxiliary systems. Among them, plates and frames are supporting components in the electrolyzer, used to support electrodes and diaphragms, and conduct electricity; the main function of the diaphragm is to prevent hydrogen and oxygen from mixing; the electrode is the place where the electrochemical reaction occurs, and it is also the key to determining the efficiency of hydrogen production in the electrolyzer; the BOP auxiliary system includes power supply system, control system, gas-liquid separation system, purification system, alkali system, water replenishment system, cooling and drying system and other auxiliary systems.

[0005] At present, most of the electrodes used in electrolyzers are nickel-based electrodes, such as nickel mesh and nickel foam. Among them, the nickel mesh electrode is made of a 40-60 mesh nickel wire mesh cut into a circle, the diameter of the nickel wire is about 200 microns, it is cheap, and it is resistant to acid, alkali and high temperature. In the process of hydrogen production by electrolysis of water, the nickel mesh electrode is used as a hydrogen evolution electrode. Due to its low intrinsic catalytic activity, the efficiency of water electrolysis is severely limited. Therefore, in order to improve the efficiency of water electrolysis, a layer of modified catalyst is usually coated on the surface of the nickel mesh electrode to improve its intrinsic catalytic activity.

[0006] Since the nickel mesh electrode is a circular mesh plate in appearance, the following problems will inevitably arise when using existing spraying equipment to modify its surface: 1. The coating method is single and cannot cover the entire nickel mesh electrode, resulting in uneven coating of the modified catalyst.

[0007] 2. It is inconvenient to load and unload the nickel mesh electrode before and after spraying.

[0008] 3. Due to inaccurate positioning, the nickel mesh electrode is prone to offset during the spraying process, affecting the spraying quality.

[0009] 4. The natural drying process of the modified catalyst is slow, which affects the spraying efficiency.

[0010] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0011] In view of the defects in the prior art, the present invention provides a spraying device for surface modification of electrolytic cell electrodes, so as to solve the problems that the spraying equipment in the traditional technology is used for surface modification spraying of nickel mesh electrodes in electrolytic cells, such as a single spraying method, inability to achieve uniform coating of the modified catalyst, inconvenient loading and unloading of the nickel mesh electrodes, inaccurate spraying positioning and long natural curing time of the coating.

[0012] To achieve the above object, the present invention provides the following technical solutions: The spraying device for surface modification of electrolytic cell electrodes comprises a mounting base which is a horizontally arranged square base on which a conveying and feeding component, a positioning and clamping component, a sliding spraying component and a rotating roller coating component are respectively arranged.

[0013] As an optimized solution, a painting workbench is fixedly provided above the mounting base. The painting workbench is a horizontally arranged square table. A square painting limit opening is opened on one side of the upper surface of the painting workbench. The painting limit opening is connected to the longitudinal side end surface of the painting workbench.

[0014] As an optimized solution, two laterally symmetrical L-shaped support plates are fixedly connected to the upper surface of the mounting base, and the upper ends of the L-shaped support plates are fixedly connected to the lower surface of the coating workbench.

[0015] As an optimized solution, the sliding spraying assembly includes a spraying support frame, which is a U-shaped frame with an opening facing downward. The lower ends of the spraying support frame span the mounting base and are fixed to the lateral side end surfaces of the mounting base.

[0016] As an optimized solution, a paint box is fixedly connected to the transverse outer wall of the spray support frame near the upper end, and a delivery pump is fixedly connected to the transverse outer wall of the paint box. The delivery pump is connected to the paint box.

[0017] As an optimized solution, the upper surface of the spray support frame is provided with a laterally extending sliding limit opening, a sliding top seat is clamped in the sliding limit opening, and the lower surface of the sliding top seat is fixedly connected to two longitudinally symmetrical hydraulic telescopic cylinders, and the lower telescopic end of the hydraulic telescopic cylinder is fixedly connected to a mobile spray box, and an electric-controlled spray head is fixed to the lower surface of the mobile spray box.

[0018] As an optimized solution, the paint box is externally connected to a spiral conveying pipe, and the end of the spiral conveying pipe passes through the spraying support frame and is fixedly connected to the mobile spraying box.

[0019] As an optimized solution, the rotating roller coating assembly includes a support base, which is a U-shaped seat with an opening facing downward. The support base is arranged on the longitudinal outer side of the coating workbench, and the lower end of the support base is fixedly connected to the upper surface of the mounting base.

[0020] As an optimized solution, a steering drive motor is fixedly connected to the inner top surface of the support base, and the end of the output shaft of the steering drive motor passes upward through the support base and is fixedly connected to a disc base, and the disc base is arranged close to the upper surface of the support base, and a vertical telescopic cylinder is fixedly connected to the center of the upper surface of the disc base, and the upper telescopic end of the telescopic cylinder is fixedly connected to an intermediate steering seat, and a horizontal extension plate is telescopically provided on the intermediate steering seat, and four centrally symmetrical electric-controlled telescopic cylinders are fixedly connected to the side end surface of the intermediate steering seat, and the telescopic ends of the electric-controlled telescopic cylinders are fixedly connected to the side end surfaces of the horizontal extension plates.

[0021] As an optimized solution, a motor mounting opening is opened on one side of the upper surface of the horizontal extension plate, and a double-shaft motor is fixed in the motor mounting opening. Each output shaft end of the double-shaft motor passes through the horizontal extension plate and is fixedly connected to a swing connecting arm, and a coating roller is rotatably provided between the two swing connecting arms.

[0022] As an optimized solution, two groups of symmetrical roller brushes are fixed on the outer circumferential wall of the roller coating cylinder, and a plurality of drying air nozzles are axially fixedly connected to the outer circumferential wall of the roller coating cylinder, and the plurality of drying air nozzles are respectively connected to the roller coating cylinder, and the plurality of drying air nozzles are divided into two symmetrical groups, and the two groups of drying air nozzles and the two groups of roller brushes are alternately arranged.

[0023] As an optimized solution, a lifting connection port is opened on the lower bottom surface of the painting workbench, and the lifting connection port is connected with the painting limit port. A horizontal top support plate is provided in the lifting connection port, and the top support plate is arranged close to the circumferential inner wall of the lifting connection port.

[0024] As an optimized solution, two transversely symmetrical lifting and telescopic cylinders are fixedly connected to the middle of the upper surface of the mounting base, and the upper telescopic ends of the lifting and telescopic cylinders are fixedly connected to the lower surface of the top support plate.

[0025] As an optimized solution, the positioning and clamping assembly includes two symmetrically arranged transverse push plates and one longitudinal push plate. A transverse telescopic cylinder is fixedly connected to each transverse inner wall of the painting workbench, and the telescopic end of the transverse telescopic cylinder passes through the painting workbench and is fixed to the back side of the transverse push plate. A longitudinal telescopic cylinder is fixedly connected to the longitudinal inner wall of the painting workbench, and the telescopic end of the longitudinal telescopic cylinder passes through the painting workbench and is fixed to the back side of the longitudinal push plate.

[0026] As an optimized solution, the conveying and loading assembly includes two laterally symmetrical conveying rollers, which are rotatably mounted on the longitudinal end surface of one side of the opening of the painting workbench. A conveyor belt is sleeved between the two conveying rollers, and the upper surface of the conveyor belt is flush with the inner bottom surface of the painting workbench.

[0027] As an optimized solution, a fixed side plate is respectively provided on the outer side of each of the conveying rollers, the lower end of the fixed side plate is fixedly connected to the upper surface of the mounting base, and a conveying drive motor is respectively fixedly connected to the lateral outer end surface of each of the fixed side plates, and the output shaft end of the conveying drive motor passes through the fixed side plate and is fixedly connected to the side end surface of the conveying roller.

[0028] As an optimized solution, the positioning and clamping assembly also includes a support vertical plate, which is arranged on one side of the conveyor belt. The lower end of the support vertical plate is fixedly connected to the upper surface of the mounting base. A telescopic pushing cylinder is fixed to the upper part of the support vertical plate. The telescopic pushing cylinder is longitudinally extended and a transfer pushing plate is fixedly connected to the telescopic end of the pushing telescopic cylinder. The transfer pushing plate is horizontally arranged relative to the longitudinal pushing plate.

[0029] As an optimized solution, two sliding drive motors are fixedly connected to the upper surface of the spray support frame in the transverse direction. The two sliding drive motors are arranged on both sides of the sliding limit opening, and the end of the output shaft of each sliding drive motor is fixedly connected to a horizontal drive threaded rod.

[0030] As an optimized solution, a mounting side plate is provided on the opposite side of each sliding drive motor, the lower end of the mounting side plate is fixedly connected to the upper surface of the spray support frame, and the end of the driving threaded rod is rotatably supported on the mounting side plate.

[0031] As an optimized solution, the two driving threaded rods respectively pass through and are threadedly connected to the sliding top seat.

[0032] As an optimized solution, a rolling drive motor is fixedly connected to the outer side wall of one of the swing connecting arms, and the output shaft end of the rolling drive motor passes through the swing connecting arm and is fixedly connected to the closed outer end surface of the roller coating cylinder.

[0033] As an optimized solution, an air storage box and a compressed air pump are fixedly connected to one side of the upper surface of the horizontal extension plate, and the compressed air pump is connected to the air storage box. The air storage box is externally connected to an air intake pipe, and the end of the air intake pipe passes through the other swing connecting arm and extends to the interior of the roller coating barrel.

[0034] Compared with the prior art, the present invention has the following beneficial effects: The present invention generally adopts a coating method of first spraying and then rolling, so that the coating can cover the entire nickel mesh electrode, thereby improving the uniformity of the coating.

[0035] The conveying and loading assembly provided in the present invention can realize automatic loading and unloading of the nickel mesh electrode before and after spraying. Specifically, the conveying and loading assembly includes a transversely extending conveyor belt, which is sleeved on two conveyor rollers. The conveyor driving motor drives the conveyor rollers to rotate, and the conveyor belt can be driven to circulate and roll, so as to realize automatic loading and unloading transfer of the nickel mesh electrode.

[0036] The positioning clamping assembly provided in the present invention can push, transfer and side-press the nickel mesh electrode for positioning during the spraying process, thereby avoiding the problem of reduced spraying quality caused by the deviation of the nickel mesh. Specifically, the positioning clamping assembly includes a supporting vertical plate arranged on one side of the conveyor belt, and a transfer push plate is telescopically provided on the upper end of the supporting vertical plate. By controlling the extension of the push telescopic cylinder, the transfer push plate can be driven to move longitudinally, thereby pushing the nickel mesh electrode from the conveyor belt to the coating workbench. Furthermore, the positioning clamping assembly also includes two transverse push plates and one longitudinal push plate telescopically arranged on the coating workbench. Through the cooperation of the transverse push plate, the longitudinal push plate and the transfer push plate, the nickel mesh electrode can be confined in the middle of the top support plate and prevented from deflecting during the spraying process.

[0037] The sliding spraying assembly provided in the present invention can spray the modified catalyst onto the nickel mesh electrode and expand the spraying coverage by sliding horizontally. Specifically, the sliding spraying assembly includes a sliding top seat, which is slidably mounted in the sliding limit opening and can move horizontally under the control of the sliding drive motor, thereby changing the real-time spraying position and eliminating the spraying dead angle. The lower surface of the sliding base is telescopically provided with a mobile spraying box, which can be driven to move up and down by controlling the telescopic hydraulic cylinder to change the spraying distance of the electronically controlled nozzle relative to the nickel mesh electrode to achieve different spraying effects; further, the paint box fixedly connected to the spraying support frame is connected to the mobile spraying box through a spiral conveying pipe, thereby achieving real-time replenishment of the modified catalyst paint.

[0038] The rotating roller coating assembly provided in the present invention can perform secondary roller coating on the modified catalyst coating sprayed on the nickel mesh electrode, so as to increase the uniformity of coating. Specifically, the rotating roller coating assembly includes an intermediate steering seat and a horizontal extension plate. The intermediate steering seat can rotate around the axis under the control of the steering drive motor, and the sliding spraying assembly can be avoided by steering; the end of the horizontal extension plate is rotatably provided with two swing connecting arms, and a roller coating barrel is rotatably provided between the two swing connecting arms. The swing connecting arms can swing around the axis under the control of the double-output shaft motor to adjust the working position and angle of the roller coating barrel, and the modified catalyst coating on the nickel mesh electrode is secondary roller coated with the roller brush on the roller coating barrel to make the coating thickness uniform; further, an air storage box and a compressed air pump are fixedly connected to the horizontal extension plate, and the air storage box is externally connected to the air intake pipe, and the end of the air intake pipe extends to the inside of the roller coating barrel, and then sprayed out through the drying air nozzle, so that after the rolling is completed, the modified catalyst is dried in real time to accelerate the curing of the modified catalyst. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0040] Figure 1 It is a schematic cross-sectional view of the internal structure of each component in the present invention in the main viewing direction; Figure 2 It is a schematic cross-sectional view of the internal structure of each component in the present invention in a top view direction; Figure 3 It is a schematic cross-sectional view of the internal structure of each component in the present invention in the side view direction; Figure 4 It is a schematic diagram of the external overall structure of the present invention in the main viewing direction; Figure 5 It is a schematic diagram of the external overall structure of the present invention in a top view; Figure 6 It is a schematic diagram of the external overall structure of the present invention when viewed from the side.

[0041] In the figure: 1-installation base, 2-painting workbench, 3-painting limit port, 4-L-shaped support plate, 5-lifting connection port, 6-top support plate, 7-lifting telescopic cylinder, 8-lateral push plate, 9-longitudinal push plate, 10-lateral telescopic cylinder, 11-longitudinal telescopic cylinder, 12-conveying roller, 13-conveying belt, 14-fixed side plate, 15-conveying drive motor, 16-support vertical plate, 17-pushing telescopic cylinder, 18-transfer pushing plate, 19-spraying support frame, 20-paint box, 21-conveying pump, 22-sliding limit port, 23-sliding top seat, 24-hydraulic telescopic cylinder, 25 -Mobile spray box, 26-electrically controlled spray head, 27-spiral conveying pipe, 28-sliding drive motor, 29-driving threaded rod, 30-mounting side plate, 31-support base, 32-steering drive motor, 33-disc base, 34-telescopic cylinder, 35-middle steering seat, 36-horizontal extension plate, 37-electrically controlled telescopic cylinder, 38-motor mounting port, 39-double-output shaft motor, 40-swing connecting arm, 41-roller barrel, 42-roller brush, 43-drying air nozzle, 44-rolling drive motor, 45-air storage box, 46-compressed air pump, 47-intake pipe, 48-nickel mesh electrode. DETAILED DESCRIPTION

[0042] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0043] like Figures 1 to 6 As shown, the spraying device for surface modification of electrolytic cell electrodes includes a mounting base 1, which is a horizontally arranged square base, and the mounting base 1 is respectively provided with a conveying and feeding component, a positioning and clamping component, a sliding spraying component and a rotating roller coating component.

[0044] A painting workbench 2 is fixedly provided above the mounting base 1 . The painting workbench 2 is a horizontally arranged square table. A square painting limit opening 3 is provided on one side of the upper surface of the painting workbench 2 . The painting limit opening 3 is connected to the longitudinal side end surface of the painting workbench 2 .

[0045] Two laterally symmetrical L-shaped support plates 4 are fixedly connected to the upper surface of the mounting base 1 , and the upper ends of the L-shaped support plates 4 are fixedly connected to the lower surface of the coating workbench 2 .

[0046] A lifting communication port 5 is provided on the lower bottom surface of the painting workbench 2 , and the lifting communication port 5 is connected to the painting limit port 3 . A horizontal supporting plate 6 is provided in the lifting communication port 5 , and the supporting plate 6 is closely attached to the circumferential inner wall of the lifting communication port 5 .

[0047] Two transversely symmetrical lifting and telescopic cylinders 7 are fixedly connected to the middle of the upper surface of the mounting base 1 , and the upper telescopic ends of the lifting and telescopic cylinders 7 are fixedly connected to the lower surface of the top supporting plate 6 .

[0048] The positioning and clamping assembly includes two symmetrically arranged transverse push plates 8 and a longitudinal push plate 9. A transverse telescopic cylinder 10 is fixedly connected to each transverse inner wall of the painting workbench 2. The telescopic end of the transverse telescopic cylinder 10 passes through the painting workbench 2 and is fixedly connected to the back side of the transverse push plate 8. A longitudinal telescopic cylinder 11 is fixedly connected to the longitudinal inner wall of the painting workbench 2. The telescopic end of the longitudinal telescopic cylinder 11 passes through the painting workbench 2 and is fixedly connected to the back side of the longitudinal push plate 9.

[0049] The conveying and loading assembly includes two laterally symmetrical conveying rollers 12, which are rotatably mounted on the longitudinal end surface of the opening side of the coating workbench 2. A conveyor belt 13 is sleeved between the two conveyor rollers 12, and the upper surface of the conveyor belt 13 is flush with the inner bottom surface of the coating workbench 2.

[0050] A fixed side plate 14 is provided on the outer side of each conveying roller 12, and the lower end of the fixed side plate 14 is fixedly connected to the upper surface of the mounting base 1. A conveying drive motor 15 is fixedly connected to the lateral outer end surface of each fixed side plate 14, and the output shaft end of the conveying drive motor 15 passes through the fixed side plate 14 and is fixedly connected to the side end surface of the conveying roller 12.

[0051] The positioning and clamping assembly also includes a support vertical plate 16, which is arranged on one side of the conveyor belt 13. The lower end of the support vertical plate 16 is fixedly connected to the upper surface of the mounting base 1, and a push-pushing telescopic cylinder 17 is fixedly provided on the upper part of the support vertical plate 16. The push-pushing telescopic cylinder 17 is longitudinally extended and a transfer push-pushing plate 18 is fixedly provided at the telescopic end of the push-pushing telescopic cylinder 17. The transfer push-pushing plate 18 is horizontally arranged opposite to the longitudinal push-pushing plate 9.

[0052] The sliding spraying assembly includes a spraying support frame 19, which is a U-shaped frame with an opening facing downward. The spraying support frame 19 is arranged directly above the top support plate 6. The lower ends of the spraying support frame 19 span the mounting base 1 and are fixedly connected to the lateral side end surfaces of the mounting base 1.

[0053] A paint box 20 is fixedly connected to a transverse outer wall of the spray support frame 19 near the upper end, and a delivery pump 21 is fixedly connected to a transverse outer wall of the paint box 20 . The delivery pump 21 is connected to the paint box 20 .

[0054] A laterally extending sliding limit opening 22 is provided on the upper surface of the spray support frame 19, and a sliding top seat 23 is clamped in the sliding limit opening 22. Two longitudinally symmetrical hydraulic telescopic cylinders 24 are fixedly connected to the lower surface of the sliding top seat 23. A mobile spray box 25 is fixedly connected to the lower telescopic end of the hydraulic telescopic cylinder 24, and an electric-controlled spray head 26 is fixed to the lower surface of the mobile spray box 25.

[0055] The paint box 20 is externally connected to a spiral conveying pipe 27 , and the end of the spiral conveying pipe 27 passes through the spraying support frame 19 and is fixedly connected to the mobile spraying box 25 .

[0056] Two sliding drive motors 28 are fixedly connected to the upper surface of the spray support frame 19 in the transverse direction. The two sliding drive motors 28 are respectively arranged on both sides of the sliding limit opening 22. The end of the output shaft of each sliding drive motor 28 is fixedly connected to a horizontal driving threaded rod 29.

[0057] A mounting side plate 30 is provided on the opposite side of each sliding drive motor 28 . The lower end of the mounting side plate 30 is fixedly connected to the upper surface of the spray support frame 19 , and the end of the driving threaded rod 29 is rotatably supported on the mounting side plate 30 .

[0058] Two driving threaded rods 29 pass through and are threadedly connected to the sliding top seat 23 respectively.

[0059] The rotary roller coating assembly includes a support base 31 , which is a U-shaped base with an opening facing downward. The support base 31 is arranged on the longitudinal outer side of the coating workbench 2 , and the lower end of the support base 31 is fixedly connected to the upper surface of the mounting base 1 .

[0060] A steering drive motor 32 is fixedly connected to the inner top surface of the support base 31. The end of the output shaft of the steering drive motor 32 passes upward through the support base 31 and is fixedly connected to a disc base 33. The disc base 33 is arranged close to the upper surface of the support base 31. A vertical telescopic cylinder 34 is fixedly connected to the center of the upper surface of the disc base 33. The upper telescopic end of the telescopic cylinder 34 is fixedly connected to an intermediate steering seat 35. A horizontal extension plate 36 is telescopically provided on the intermediate steering seat 35. Four centrally symmetrical electric-controlled telescopic cylinders 37 are fixedly connected to the side end surface of the intermediate steering seat 35. The telescopic ends of the electric-controlled telescopic cylinders 37 are fixedly connected to the side end surfaces of the horizontal extension plates 36.

[0061] A motor mounting opening 38 is provided on one side of the upper surface of the horizontal extension plate 36, and a double-shaft motor 39 is fixedly provided in the motor mounting opening 38. Each output shaft end of the double-shaft motor 39 passes through the horizontal extension plate 36 and is fixedly connected to a swing connecting arm 40, and a coating roller 41 is rotatably provided between the two swing connecting arms 40.

[0062] Two groups of symmetrical roller brushes 42 are fixed on the outer wall of the roller coating cylinder 41, and a plurality of drying air nozzles 43 are fixedly connected to the outer wall of the roller coating cylinder 41 along the axial direction. The plurality of drying air nozzles 43 are respectively connected to the roller coating cylinder 41, and the plurality of drying air nozzles 43 are divided into two symmetrical groups. The two groups of drying air nozzles 43 and the two groups of roller brushes 42 are alternately arranged.

[0063] A rolling drive motor 44 is fixedly connected to the outer side wall of one of the swing connecting arms 40 , and the output shaft end of the rolling drive motor 44 passes through the swing connecting arm 40 and is fixedly connected to the closed outer end surface of the roller coating cylinder 41 .

[0064] An air storage box 45 and a compressed air pump 46 are fixedly connected to one side of the upper surface of the horizontal extension plate 36. The compressed air pump 46 is connected to the air storage box 45. The air storage box 45 is externally connected to an air intake pipe 47. The end of the air intake pipe 47 passes through another swing connecting arm 40 and extends to the interior of the roller coating cylinder 41.

[0065] When the present invention is used: first, the nickel mesh electrode 48 to be sprayed is placed flat on the conveyor belt 13, and the two conveying drive motors 15 are started respectively. The conveying drive motor 15 drives the conveying roller 12 to rotate, and then drives the conveyor belt 13 to roll in a circle, so as to convey the nickel mesh electrode 48 horizontally; the lifting and telescopic cylinder 7 is controlled to extend, and the top support plate 6 is driven to move up to a position flush with the inner bottom surface of the coating workbench 2; when the nickel mesh electrode 48 is conveyed to the middle of the conveyor belt 13, the conveying drive motor 15 is turned off, the pushing telescopic cylinder 17 is controlled to extend, and the transfer pushing plate 18 is used to push the nickel mesh electrode 48 from the conveyor belt 13 to the coating workbench 2, and the horizontal and vertical directions of the nickel mesh electrode 48 are respectively controlled. The telescopic cylinder 10 and the longitudinal telescopic cylinder 11 are extended, and the nickel mesh electrode 48 is pushed to the center of the upper surface of the top support plate 6 by the transverse push plate 8 and the longitudinal push plate 9, so as to realize the spray positioning; the delivery pump 21 is started to inject the modified catalyst into the paint box 20, and the modified catalyst enters the mobile spray box 25 through the spiral delivery pipe 27; the two sliding drive motors 28 are started respectively, and the sliding drive motor 28 drives the driving threaded rod 29 to rotate, thereby driving the sliding top seat 23 to slide laterally along the sliding limit opening 22, and at the same time, the hydraulic telescopic cylinder 24 is controlled to extend, driving the mobile spray box 25 to move down, close to the nickel mesh electrode 48, and turning on the electronically controlled spray head 26, The modified catalyst is sprayed on the nickel mesh electrode 48; after spraying, the sliding top seat 23 is driven to move back to the initial position along the sliding limit opening 22; the steering drive motor 32 is started, and the steering drive motor 32 drives the disc base 33 to rotate, and drives the middle steering seat 35 to rotate 90° clockwise, thereby driving the horizontal extension plate 36 to rotate from the side to the top of the coating workbench 2; the electric control telescopic cylinder 37 is controlled to extend, drive the horizontal extension plate 36 to move longitudinally, control the telescopic cylinder 34 to shorten, adjust the roller coating height, and start the double-output shaft motor 39 at the same time, and the double-output shaft motor 39 drives the two swing connecting arms 40 to swing, thereby moving the roller coating barrel 41 to the nickel mesh electrode 48; start the rolling drive motor 44, the rolling drive motor 44 drives the roller coating cylinder 41 to rotate, use the roller coating brush 42 to evenly coat the modified catalyst sprayed on the nickel mesh electrode 48, and at the same time start the compressed air pump 46 to inject compressed air into the air storage box 45, the compressed air enters the roller coating cylinder 41 through the air inlet pipe 47, and then rotates and sprays out through the drying air nozzle 43 to spray and dry; after the coating is completed, the longitudinal telescopic cylinder 11 is controlled to extend again, and the longitudinal push plate 9 is driven to move longitudinally, and the sprayed nickel mesh electrode 48 is pushed from the top support plate 6 to the conveyor belt 13 through the coating workbench 2, and then the nickel mesh electrode 48 is transported out horizontally.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A spraying device for surface modification of electrolytic cell electrodes, characterized in that: It comprises a mounting base (1), the mounting base (1) being a horizontally arranged square base, and the mounting base (1) is respectively provided with a conveying and feeding assembly, a positioning and clamping assembly, a sliding spraying assembly and a rotating roller coating assembly; A painting workbench (2) is fixedly arranged above the mounting base (1); the painting workbench (2) is a horizontally arranged square table; a square painting limit opening (3) is provided on one side of the upper surface of the painting workbench (2); the painting limit opening (3) is connected to a longitudinal side end surface of the painting workbench (2); Two laterally symmetrical L-shaped support plates (4) are fixedly connected to the upper surface of the mounting base (1), and the upper ends of the L-shaped support plates (4) are fixedly connected to the lower surface of the coating workbench (2); The sliding spraying assembly comprises a spraying support frame (19), the spraying support frame (19) being a U-shaped frame with an opening facing downward, the lower ends of the spraying support frame (19) spanning the mounting base (1) and being fixedly connected to the lateral side end surfaces of the mounting base (1); A paint box (20) is fixedly connected to a transverse outer wall of the spray support frame (19) near the upper end, a delivery pump (21) is fixedly connected to a transverse outer wall of the paint box (20), and the delivery pump (21) is connected to the paint box (20); The upper surface of the spray support frame (19) is provided with a sliding limit opening (22) extending transversely, a sliding top seat (23) is clamped in the sliding limit opening (22), the lower surface of the sliding top seat (23) is fixedly connected to two longitudinally symmetrical hydraulic telescopic cylinders (24), the lower telescopic ends of the hydraulic telescopic cylinders (24) are fixedly connected to a mobile spray box (25), and the lower surface of the mobile spray box (25) is fixed with an electric control spray head (26); The paint box (20) is externally connected to a spiral conveying pipe (27), and the end of the spiral conveying pipe (27) passes through the spraying support frame (19) and is fixedly connected to the mobile spraying box (25); The rotary roller coating assembly comprises a support base (31), the support base (31) being a U-shaped base with an opening facing downwards, the support base (31) being arranged on the longitudinal outer side of the coating workbench (2), and the lower end of the support base (31) being fixedly connected to the upper surface of the mounting base (1); A steering drive motor (32) is fixedly connected to the inner top surface of the support base (31); the output shaft end of the steering drive motor (32) passes through the support base (31) upward and is fixedly connected to a disc base (33); the disc base (33) is arranged in close contact with the upper surface of the support base (31); a vertical telescopic cylinder (34) is fixedly connected to the center of the upper surface of the disc base (33); the upper telescopic end of the telescopic cylinder (34) is fixedly connected to an intermediate steering seat (35); a horizontal extension plate (36) is telescopically provided on the intermediate steering seat (35); four centrally symmetrical electric telescopic cylinders (37) are fixedly connected to the side end surface of the intermediate steering seat (35); the telescopic ends of the electric telescopic cylinders (37) are fixedly connected to the side end surfaces of the horizontal extension plates (36); A motor mounting opening (38) is provided on one side of the upper surface of the horizontal extension plate (36), a double-shaft motor (39) is fixedly provided in the motor mounting opening (38), each output shaft end of the double-shaft motor (39) passes through the horizontal extension plate (36) and is fixedly connected to a swing connecting arm (40), and a coating roller (41) is rotatably provided between the two swing connecting arms (40); Two groups of symmetrical coating brushes (42) are fixed on the outer peripheral wall of the coating roller (41); a plurality of drying air nozzles (43) are fixedly connected to the outer peripheral wall of the coating roller (41) along the axial direction; the plurality of drying air nozzles (43) are respectively connected to the coating roller (41); the plurality of drying air nozzles (43) are divided into two symmetrical groups; the two groups of drying air nozzles (43) and the two groups of coating brushes (42) are alternately arranged.

2. The spraying device for surface modification of electrolytic cell electrodes according to claim 1, characterized in that: A lifting communication opening (5) is provided on the lower bottom surface of the coating workbench (2), the lifting communication opening (5) is connected to the coating limit opening (3), a horizontal supporting plate (6) is provided in the lifting communication opening (5), and the supporting plate (6) is closely attached to the circumferential inner wall of the lifting communication opening (5); Two transversely symmetrical lifting and telescopic cylinders (7) are fixedly connected to the middle of the upper surface of the mounting base (1), and the upper telescopic ends of the lifting and telescopic cylinders (7) are fixedly connected to the lower surface of the top support plate (6).

3. The spraying device for surface modification of electrolytic cell electrodes according to claim 1, characterized in that: The positioning clamping assembly comprises two symmetrically arranged transverse push plates (8) and a longitudinal push plate (9); a transverse telescopic cylinder (10) is fixedly connected to each transverse inner wall of the coating workbench (2); the telescopic end of the transverse telescopic cylinder (10) passes through the coating workbench (2) and is fixedly connected to the back of the transverse push plate (8); a longitudinal telescopic cylinder (11) is fixedly connected to the longitudinal inner wall of the coating workbench (2); the telescopic end of the longitudinal telescopic cylinder (11) passes through the coating workbench (2) and is fixedly connected to the back of the longitudinal push plate (9).

4. The spraying device for surface modification of electrolytic cell electrodes according to claim 3, characterized in that: The conveying and loading assembly comprises two transversely symmetrical conveying rollers (12), the two conveying rollers (12) being rotatably mounted on the longitudinal end surface of one side of the opening of the coating workbench (2), a conveying belt (13) being sleeved between the two conveying rollers (12), the upper surface of the conveying belt (13) being flush with the inner bottom surface of the coating workbench (2); A fixed side plate (14) is respectively provided on the outer side of each of the conveying rollers (12); the lower end of the fixed side plate (14) is fixedly connected to the upper surface of the mounting base (1); a conveying drive motor (15) is respectively fixedly connected to the lateral outer end surface of each of the fixed side plates (14); the output shaft end of the conveying drive motor (15) passes through the fixed side plate (14) and is fixedly connected to the side end surface of the conveying roller (12).

5. The spraying device for surface modification of electrolytic cell electrodes according to claim 4, characterized in that: The positioning and clamping assembly also includes a support vertical plate (16), the support vertical plate (16) is arranged on one side of the conveyor belt (13), the lower end of the support vertical plate (16) is fixedly connected to the upper surface of the mounting base (1), and a push-pushing telescopic cylinder (17) is fixedly connected to the upper part of the support vertical plate (16), the push-pushing telescopic cylinder (17) is longitudinally extended and the telescopic end of the push-pushing telescopic cylinder (17) is fixedly connected to a transfer push-pushing plate (18), and the transfer push-pushing plate (18) is horizontally arranged opposite to the longitudinal push-pushing plate (9).

6. The spraying device for surface modification of electrolytic cell electrodes according to claim 1, characterized in that: Two sliding drive motors (28) are fixedly connected to the upper surface of the spraying support frame (19) in the transverse direction. The two sliding drive motors (28) are arranged on both sides of the sliding limit opening (22). The output shaft end of each sliding drive motor (28) is fixedly connected to a horizontal drive threaded rod (29). A mounting side plate (30) is provided on the opposite side of each sliding drive motor (28), the lower end of the mounting side plate (30) is fixedly connected to the upper surface of the spraying support frame (19), and the end of the driving threaded rod (29) is rotatably supported on the mounting side plate (30); The two driving threaded rods (29) respectively pass through and are threadedly connected to the sliding top seat (23).

7. The spraying device for surface modification of electrolytic cell electrodes according to claim 1, characterized in that: A rolling drive motor (44) is fixedly connected to the outer side wall of one of the swing connection arms (40), and the output shaft end of the rolling drive motor (44) passes through the swing connection arm (40) and is fixedly connected to the closed outer end surface of the coating roller (41).

8. The spraying device for surface modification of electrolytic cell electrodes according to claim 7, characterized in that: An air storage box (45) and a compressed air pump (46) are fixedly connected to one side of the upper surface of the horizontal extension plate (36), the compressed air pump (46) is connected to the air storage box (45), the air storage box (45) is externally connected to an air intake pipe (47), and the end of the air intake pipe (47) passes through another swing connection arm (40) and extends to the interior of the roller coating barrel (41).

Images