CN113463106A

CN113463106A - Pickling device for iron picture manufacturing

Info

Publication number: CN113463106A
Application number: CN202110783253.0A
Authority: CN
Inventors: 李庆; 朱米娜
Original assignee: Wuhu Chutieyi Iron Picture Design Co ltd
Current assignee: Wuhu Chutieyi Iron Picture Design Co ltd
Priority date: 2021-07-12
Filing date: 2021-07-12
Publication date: 2021-10-01

Abstract

The invention discloses a pickling device for iron painting production, which relates to the technical field of iron painting production, and includes a pickling part, a deflection part and a slag collecting part. The washing part specifically includes the pickling tank, the pickling cover and the support bar 1. The deflecting part is arranged on the upper side of the pickling tank and is used to realize the continuous shaking of the iron painting. The slag component is arranged on the lower side of the pickling tank and is used to continuously collect the rust slag. The slag collecting component specifically includes a crank, a connecting rod and a slag collecting shovel. The pickling device for making iron paintings in the present invention has the characteristics of reasonable design, ingenious structure and convenient use, and can realize rapid and thorough pickling of iron paintings and continuous shaking during pickling to improve the effect of pickling and the process of pickling. The continuous collection of the rust residue avoids the rust residue from clogging the drain of the pickling tank.

Description

Pickling device for iron picture manufacturing

Technical Field

The invention relates to the technical field of iron picture manufacturing, in particular to a pickling device for iron picture manufacturing.

Background

The iron picture pickling refers to a surface treatment method for removing rust on the surface of the iron picture by using an acidic solution.

At present, the iron painting part is generally immersed in a solution of sulfuric acid and the like completely to remove rusty materials on the surface of the iron painting part, but the immersion rust removal method is easy to cause excessive corrosion of the substrate of the iron painting part and is accompanied with defects of rough surface and the like. In addition, if adopt the mode of soaking the rust cleaning, must need a great pickling bath of volume to hold fuller pickling solution in the pickling bath, however, along with the quantity increase of pickling iron drawing finished piece, a large amount of rusty slags are necessarily accumulated to the bottom of pickling bath, if these rusty slags can not in time be cleared up away, must block up the leakage fluid dram of pickling bath, have influenced subsequent normal use of pickling bath.

Disclosure of Invention

The invention aims to provide a pickling device for manufacturing iron paintings, which aims to overcome the defects caused in the prior art.

A pickling device for manufacturing iron pictures comprises a pickling component, a deflection component and a slag collecting component, wherein:

the pickling part is used for realizing spray pickling of the iron picture and specifically comprises a pickling tank, a pickling cover and a first supporting bar;

the deflection component is arranged on the upper side of the pickling tank and used for realizing continuous shaking of the iron picture, and the deflection component specifically comprises a deflection frame, a deflection shaft and a double-shaft motor;

the slag collecting component is arranged on the lower side of the pickling tank and used for continuously collecting the rust slag, and the slag collecting component specifically comprises a crank, a connecting rod and a slag collecting shovel.

Preferably, the front side and the rear side of the pickling tank and the pickling cover are respectively connected with the industrial hinge through the industrial hasp, the first support strip is provided with a pair of first guide pipes which are symmetrically arranged at the front and the back of the pickling bath, the inner side of the first support strip is connected with the first guide pipes through a clamping hoop, four-way joints are uniformly distributed on the first guide pipe, the upper and lower interfaces of the four-way joints are connected with a second guide pipe, the outer ports of the four guide pipes are in threaded connection with an atomizing nozzle, the two ports of the first front guide pipe and the first rear guide pipe are connected through a pair of three-way joints, the middle interface of the three-way joint is connected with a third conduit, the third conduit on the left side penetrates through the left side wall of the pickling tank and is communicated with an external pickling solution with pressure, the third conduit on the right side penetrates through the right side wall of the pickling tank and is communicated with an external nitrogen gas source with pressure, and the bottom of the pickling tank is provided with a fourth guide pipe in bilateral symmetry, and the outer port of the fourth guide pipe is in threaded connection with a sealing plug.

Preferably, the frame that deflects is located between pickling bath and the pickling lid, the frame construction of frame that deflects is the rectangle, the deflection axle is equipped with a pair ofly and bilateral symmetry installs in the outside of frame that deflects, bilateral symmetry is equipped with the adjustment tank around the frame that deflects, bilateral symmetry is equipped with a pair of threaded rod between two front and back adjustment tanks, the threaded rod is at the equal threaded mounting of the interior outer both sides of adjustment tank hand screw, evenly distributed has the iron picture clip on the middle section of threaded rod, the rectangular pipe is installed to the left and right sides symmetry of pickling bath, double-shaft motor is equipped with a pair ofly and installs respectively in the outside of two rectangular pipes, double-shaft motor is vertical to be set up and to have included up output shaft one and output shaft two down, the upper end of output shaft one has the rotating sleeve, the upper end of rotating sleeve is equipped with the rotatory piece of putting to one side, the deflection part still includes support bar two and back shaft key-type connection, support bar two is equipped with a pair ofly and bilateral symmetry installs in the outside of pickling bath, the back shaft is equipped with a pair ofly and rotates respectively and install in the centre of two support bar two, the inner of back shaft is connected with the carriage, the carriage is the frame construction of rectangle, one side that the back shaft was kept away from to the carriage is equipped with the spline pipe with the coaxial distribution of back shaft, lies in and has passed through splined connection between deflection axle and the spline pipe with one side, the inboard of carriage articulates there is sectorial linkage strip, the revolving fragment is through the centre of round pin hub connection to linkage strip.

Preferably, the collection sediment part is equipped with a pair of and bilateral symmetry distributes, the collection sediment part still includes guide rail one, slide one, guide rail two and slide two, guide rail one is equipped with a pair of and front and back symmetry and installs in the downside of pickling bath, slidable mounting has slider one on the guide rail one, a slide horizontal connection is in the downside of slide one, the lower extreme key-type connection of output shaft two has the crank, the articulate other end has the connecting rod, the other end of connecting rod articulates in the downside of slide one, the upside of slide one is evenly inlayed and is had magnet one, guide rail two is equipped with a pair of and front and back symmetry and installs in the inboard of pickling bath, slidable mounting has slider two on the guide rail two, two horizontal connections of slide are in the upside of slider two, the collection sediment shovel welds the upside of slide two, the cross section of collection sediment shovel presents for the tiger mouth form, and a second magnet is uniformly embedded on the lower side of the second sliding plate, the first magnet and the second magnet are in one-to-one correspondence, and the magnetic poles of the first magnet and the second magnet are opposite in orientation.

Preferably, the welding has the pressure release cover between two parties in the top of pickling lid, the symmetrical welding of the left and right sides of pressure release cover has the pressure release pipe, the symmetrical welding of the left and right sides of pickling lid has the stock solution box, alkaline solution has been held in the stock solution box, the outer port of pressure release pipe is located the stock solution box and submerges in alkaline solution.

Preferably, the bottom of the pickling tank is uniformly provided with the Fuma wheels.

Compared with the prior art, the pickling device for manufacturing the iron picture has the following advantages:

firstly, before pickling the iron painting workpiece, adjusting the distance between the left and right rows of iron painting clips according to the actual size of the iron painting workpiece, and then firmly clamping the iron painting workpiece by using the left and right rows of iron painting clips.

Secondly, when pickling iron painting workpieces, the external and pressurized pickling solution sequentially flows through the third guide pipe, the second guide pipe and the first guide pipe on the left side, is atomized by the atomizing nozzle and then is sprayed to the iron painting workpieces, and meanwhile, the first output shaft of the double-shaft motor sequentially passes through the rotating sleeve, the rotating sheet, the linkage strip, the supporting frame, the spline pipe and the deflection shaft, and finally drives the deflection frame and the iron painting workpieces on the deflection frame to continuously shake, so that excessive pickling is avoided, and pickling efficiency is improved.

When the workpiece is pickled by the acid, the output shaft II of the double-shaft motor drives the sliding plate I and the magnet I to slide in a reciprocating mode through the crank-link mechanism, the magnet II slides in a reciprocating mode synchronously under the action of magnetic attraction, and then the sliding plate II and the slag collecting shovel on the sliding plate II are driven to shovel iron chips at the bottom of the pickling tank to be accumulated towards the middle position of the pickling tank, so that the situation that rust slag blocks a liquid outlet of the pickling tank is avoided.

And fourthly, after the iron painting workpiece is subjected to acid washing, spraying an external nitrogen source with pressure to the iron painting workpiece along the right conduit III, the right conduit II and the right conduit I in sequence, and finally dispersing the nitrogen source by an atomizing spray head to accelerate the drying time of the iron painting workpiece after acid washing.

Drawings

Fig. 1 is a schematic overall three-dimensional structure of the present invention.

Fig. 2 is a schematic structural diagram of the whole front view of the present invention.

FIG. 3 is a schematic view of the pickling section according to the present invention.

Fig. 4 and 5 are schematic views of the structure of the deflection unit in the present invention.

Fig. 6 and 7 are schematic structural views of the slag collecting member in the present invention.

Wherein:

10-pickling the component; 101-a pickling tank; 102-pickling the cover; 103-supporting the bar I; 104-a clamp; 105-conduit one; 106-four-way joint; 107-conduit two; 108-a three-way joint; 109-conduit three; 110-conduit four; 111-a sealing plug; 112-pressure relief cover; 113-pressure relief pipe; 114-a reservoir; 115-Freund's wheel;

20-a deflection member; 201-deflection frame; 201 a-adjustment tank; 202-deflection axis; 203-threaded rod; 204-hand screw; 205-iron picture clip; 206-rectangular tube; 207-a two-shaft motor; 2071 — output shaft one; 2072 — output shaft two; 208-a rotating sleeve; 209-rotating plate; 210-a second supporting strip; 211-support shaft; 212-a support frame; 213-a splined tube; 214-linkage bar;

30-a slag collecting component; 301-guide rail one; 302-sliding block one; 303-sliding plate I; 304-a crank; 305-a connecting rod; 306-magnet one; 307-guide rail two; 308-a second sliding block; 309-sliding plate II; 310-slag collecting shovel; 311-magnet two.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 7, a pickling device for manufacturing iron paintings comprises a pickling member 10, a deflecting member 20 and a slag collecting member 30, wherein:

the pickling part 10 is used for realizing spray pickling of iron pictures, and the pickling part 10 specifically comprises a pickling tank 101, a pickling cover 102 and a first support bar 103;

the deflection component 20 is arranged on the upper side of the pickling tank 101 and is used for realizing continuous shaking of the iron picture, and the deflection component 20 specifically comprises a deflection frame 201, a deflection shaft 202 and a double-shaft motor 207;

the slag collecting component 30 is arranged at the lower side of the pickling tank 101 and is used for continuously collecting the rust slag, and the slag collecting component 30 specifically comprises a crank 304, a connecting rod 305 and a slag collecting shovel 310.

In this embodiment, both sides are respectively through industry hasp and industry hinged joint around pickling bath 101 and pickling lid 102, a support bar 103 is equipped with a pair of and front and back symmetry and installs in the inboard of pickling bath 101, the inboard of a support bar 103 is connected with pipe 105 through clamp 104, evenly distributed has four-way connection 106 on pipe 105, four-way connection 106's upper and lower interface all is connected with pipe two 107, the equal threaded connection of the outer port of pipe four 107 has the atomizer, connect through a pair of three way connection 108 between the two ports of two piece pipe 105 around, the middle interface connection of three way connection 108 has pipe three 109, pipe three 109 on the left side runs through the left side wall of pickling bath 101 and communicates the pickling solution that peripheral hardware and pressure, pipe three 109 on the right side runs through the right side wall of pickling bath 101 and communicates the nitrogen gas source that peripheral hardware and pressure, the bottom of the pickling tank 101 is symmetrically provided with a fourth guide pipe 110, and the outer port of the fourth guide pipe 110 is in threaded connection with a sealing plug 111. When pickling iron picture finished piece, earlier with pickling lid 102 lid in the upside of pickling bath 101, obtain the pickling space that is used for pickling iron picture to use, again with outside and pressured pickling solution follow pipe three 109 on the left side in proper order, pipe two 107 and pipe 105, spout to iron picture finished piece after atomizing by atomizer at last, change into the pickling that sprays of this application by the submergence pickling in the past, avoid the excessive erosion to iron picture finished piece base member, and simultaneously, avoid needing a great pickling bath of volume, and hold more full pickling solution in the pickling bath. And after the iron painting workpiece is pickled, an external nitrogen source with pressure sequentially flows through the right guide pipe III 109, the right guide pipe II 107 and the right guide pipe I105, and is finally dispersed by the atomizing nozzle and then sprayed to the iron painting workpiece, so that the drying time of the iron painting after pickling is accelerated.

In this embodiment, the deflection frame 201 is located between the pickling bath 101 and the pickling cover 102, the deflection frame 201 is a rectangular frame structure, the deflection shaft 202 is provided with a pair of and bilateral symmetry to be installed in the outer side of the deflection frame 201, the front and back bilateral symmetry of the deflection frame 201 is provided with adjusting grooves 201a, the bilateral symmetry is provided with a pair of threaded rods 203 between the front and back two adjusting grooves 201a, the threaded rods 203 are provided with hand screws 204 at the inner and outer sides of the adjusting grooves 201a, iron picture clips 205 are uniformly distributed on the middle section of the threaded rods 203, rectangular pipes 206 are symmetrically installed at the left and right sides of the pickling bath 101, the double-shaft motor 207 is provided with a pair of and is respectively installed in the outer sides of the two rectangular pipes 206, the double-shaft motor 207 is vertically arranged and comprises an upward first output shaft 2071 and a downward second output shaft 2072, the upper end key of the first output shaft 2071 is connected with a rotation sleeve 208, the upper end of rotatory cover 208 is equipped with the revolving fragment 209 of putting to one side, deflection unit 20 still includes two support bars 210 and support shaft 211, two support bars 210 are equipped with a pair ofly and bilateral symmetry installs in the outside of pickling bath 101, support shaft 211 is equipped with a pair ofly and rotates respectively and installs in the centre of two support bars two 210, the inner of support shaft 211 is connected with carriage 212, carriage 212 is the frame construction of rectangle, one side that carriage 212 kept away from support shaft 211 is equipped with the spline pipe 213 with the coaxial distribution of support shaft 211, lies in through splined connection between the deflection axle 202 and the spline pipe 213 with one side, the inboard of carriage 212 articulates there is sectorial linkage strip 214, revolving fragment 209 is through the centre of round pin hub connection to linkage strip 214. Before pickling iron painting finished pieces, adjust the interval of the iron painting clips 205 of the left and right rows according to the actual size of the iron painting finished pieces, then utilize the iron painting clips 205 of the left and right rows to firmly clip the iron painting finished pieces, and when pickling the iron painting finished pieces, an output shaft 2071 through a double-shaft motor 207 sequentially passes through a rotating sleeve 208, a rotating sheet 209, a linkage strip 214, a supporting frame 212, a spline pipe 213 and a deflection shaft 202, and finally, the deflection frame 201 and the iron painting finished pieces thereon are driven to continuously shake, so that the soaking effect and the pickling effect are remarkably improved, and the later-period air drying efficiency is improved.

In this embodiment, the slag collecting component 30 is provided with a pair of left and right symmetrical distribution, the slag collecting component 30 further comprises a first guide rail 301, a first sliding plate 303, a second guide rail 307 and a second sliding plate 309, the first guide rail 301 is provided with a pair of front and back symmetrical installation parts at the lower side of the pickling tank 101, the first guide rail 301 is provided with a first sliding plate 302 in a sliding manner, the first sliding plate 303 is horizontally connected at the lower side of the first sliding plate 302, the lower end key of the second output shaft 2072 is connected with the crank 304, the other end of the crank 304 is hinged with the connecting rod 305, the other end of the connecting rod 305 is hinged at the lower side of the first sliding plate 303, the upper side of the first sliding plate 303 is uniformly embedded with a first magnet 306, the second guide rail 307 is provided with a pair of front and back symmetrical installation parts at the inner side of the pickling tank 101, the second guide rail 307 is provided with a second sliding plate 308 in a sliding manner, and the second sliding plate 309 is horizontally connected at the upper side of the second sliding plate 308, the slag collecting shovel 310 is welded on the upper side of the second sliding plate 309, the cross section of the slag collecting shovel 310 is in a tiger mouth shape, the second magnet 311 is uniformly embedded on the lower side of the second sliding plate 309, the first magnet 307 and the second magnet 311 are in one-to-one correspondence, and the magnetic poles of the first magnet 307 and the second magnet 311 face oppositely. When the double-shaft motor 207 is electrified to work, the output shaft II 2072 drives the sliding plate I303 and the magnet I306 to slide in a reciprocating manner through the crank-link mechanism, the magnet II 311 slides in a reciprocating manner synchronously under the action of magnetic attraction, and further drives the sliding plate II 309 and the slag collecting shovel 310 thereon to shovel iron chips at the bottom of the pickling tank to accumulate towards the middle position of the pickling tank 101, so that the rust slag is prevented from blocking a liquid outlet of the pickling tank 101.

In this embodiment, a pressure relief cover 112 is welded in the middle of the top of the pickling cover 102, pressure relief pipes 113 are symmetrically welded on the left and right sides of the pressure relief cover 112, liquid storage boxes 114 are symmetrically welded on the left and right sides of the pickling cover 102, an alkaline solution is contained in the liquid storage boxes 114, and an outer port of the pressure relief pipe 113 is located in the liquid storage boxes 114 and is immersed in the alkaline solution. By additionally arranging the pressure relief cover 112 and the pressure relief pipe 113, redundant acid gas in the pickling space enclosed by the pickling tank 101 and the pickling cover 102 can be led out, the generation of high pressure in the pickling space is avoided, and the led-out acid gas can react with alkaline solution in the liquid storage box 114, so that the outflow of the acid gas is avoided.

In this embodiment, the pickling tank 101 is uniformly provided with a horsewheel 115 at the bottom. The horsewheel 115 is selected, so that the pickling tank 101 containing the acidic solution can be stably supported, and the pickling tank 101 containing the acidic solution can be easily moved.

In the present embodiment, the pickling device for iron picture production is actually used:

step 1: before pickling the iron painting workpiece, firstly adjusting the distance between the left and right rows of iron painting clips 205 according to the actual size of the iron painting workpiece, then firmly clamping the iron painting workpiece by using the left and right rows of iron painting clips 205, and then covering the pickling cover 102 on the upper side of the pickling tank 101;

step 2: when the iron painting workpiece is pickled, the external pickling solution with pressure sequentially flows through the three left guide pipes 109, the two left guide pipes 107 and the first left guide pipe 105, is atomized by the atomizing nozzle and then is sprayed to the iron painting workpiece, and meanwhile, the first output shaft 2071 of the double-shaft motor 207 sequentially passes through the rotating sleeve 208, the rotating sheet 209, the linkage bar 214, the supporting frame 212, the spline pipe 213 and the deflection shaft 202, and finally drives the deflection frame 201 and the iron painting workpiece thereon to continuously shake;

and step 3: when the iron painting workpiece is pickled, the output shaft II 2072 of the double-shaft motor 207 drives the sliding plate I303 and the magnet I306 to slide in a reciprocating manner through the crank-link mechanism, the magnet II 311 synchronously slides in a reciprocating manner under the action of magnetic attraction, and further drives the sliding plate II 309 and the slag collecting shovel 310 thereon to shovel iron chips at the bottom of the pickling tank to be accumulated towards the middle position of the pickling tank 101;

and 4, step 4: after the iron painting workpiece is pickled, an external nitrogen gas source with pressure sequentially flows through the right guide pipe III 109, the right guide pipe II 107 and the right guide pipe I105, and finally is sprayed to the iron painting workpiece after being dispersed by the atomizing spray head, and the pickled iron painting is dried in the air.

The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.

Claims

1. A pickling device for making iron paintings, characterized in that: it comprises a pickling part (10), a deflection part (20) and a slag collecting part (30), wherein:

The pickling component (10) is used to realize spray pickling of iron paintings, and the pickling component (10) specifically includes a pickling tank (101), a pickling cover (102) and a support bar (103);

The deflecting component (20) is arranged on the upper side of the pickling tank (101) and is used to realize continuous shaking of the iron painting, and the deflecting component (20) specifically includes a deflecting frame (201), a deflecting shaft (202) and a double shaft motor(207);

The slag collecting component (30) is arranged on the lower side of the pickling tank (101) and is used to continuously collect the rust. The slag collecting component (30) specifically includes a crank (304), a connecting rod (305) and Slag collecting shovel (310).

2. The pickling device for making iron paintings according to claim 1, characterized in that: the front and rear sides of the pickling tank (101) and the pickling cover (102) respectively pass through industrial buckles and industrial hinges Connection, the first support bar (103) is provided with a pair and is symmetrically installed on the inner side of the pickling tank (101) front and rear, the inner side of the support bar (103) is connected with a conduit one (105) through a clamp (104) , four-way joints (106) are evenly distributed on the first conduit (105), the upper and lower interfaces of the four-way joint (106) are connected with conduit two (107), and the outer ports of the fourth conduit (107) are The atomizing nozzle is threadedly connected, and the two ports of the front and rear conduits one (105) are connected by a pair of three-way joints (108), and the middle interface of the three-way joints (108) is connected with conduit three (109), The third conduit (109) on the left runs through the left side wall of the pickling tank (101) and communicates with an external and pressurized pickling solution, and the right conduit three (109) runs through the right side wall of the pickling tank (101) and is connected to the acid washing solution. Connected to an external and pressurized nitrogen gas source, the bottom of the pickling tank (101) is symmetrically installed with a conduit four (110), and the outer port of the conduit four (110) is threadedly connected with a sealing plug (111) .

3 . The pickling device for making iron paintings according to claim 2 , wherein the deflection frame ( 201 ) is located between the pickling tank ( 101 ) and the pickling cover ( 102 ), and the deflection The frame (201) is a rectangular frame structure, the deflection shaft (202) is provided with a pair and is symmetrically mounted on the outside of the deflection frame (201), and the deflection frame (201) is symmetrically provided with adjustment grooves ( 201a), a pair of threaded rods (203) are symmetrically arranged between the front and rear adjustment grooves (201a), and the threaded rods (203) are threadedly installed with hand-tightening screws (204) on both the inner and outer sides of the adjustment groove (201a). ), iron painting clips (205) are evenly distributed on the middle section of the threaded rod (203), rectangular tubes (206) are symmetrically installed on the left and right sides of the pickling tank (101), and the biaxial motor (207) A pair is provided and installed on the outer sides of the two rectangular tubes (206) respectively, the biaxial motor (207) is vertically arranged and includes an upward-facing output shaft 1 (2071) and a downward-facing output shaft 2 (2072) , the upper end of the first output shaft (2071) is keyed with a rotating sleeve (208), the upper end of the rotating sleeve (208) is provided with an inclined rotating plate (209), and the deflection member (20) also includes a support A second bar (210) and a support shaft (211), the second support bar (210) is provided with a pair and is symmetrically installed on the outside of the pickling tank (101), and the support shaft (211) is provided with a pair and rotates respectively Installed in the middle of two support bars (210), the inner end of the support shaft (211) is connected with a support frame (212), the support frame (212) is a rectangular frame structure, the support frame (212) ) is provided with a spline tube (213) coaxially distributed with the support shaft (211) on the side away from the support shaft (211), and the spline tube (213) passes between the deflection shaft (202) on the same side and the spline tube (213). The inner side of the support frame (212) is hinged with a fan-shaped linkage bar (214), and the rotating piece (209) is connected to the middle of the linkage bar (214) through a pin shaft.

4. The pickling device for making iron paintings according to claim 3, characterized in that: the slag collecting part (30) is provided with a pair and is symmetrically distributed left and right, and the slag collecting part (30) also comprises a guide rail (30). 301), slide one (303), guide rail two (307), and slide two (309). Slide one (302) is slidably installed on (301), the slide one (303) is horizontally connected to the lower side of the slide one (302), and the lower end key of the output shaft two (2072) is connected with the A crank (304), the connecting rod (305) is hinged to the other end of the crank (304), and the other end of the connecting rod (305) is hinged to the lower side of the first sliding plate (303), the sliding plate 1 The upper side of (303) is evenly inlaid with magnet one (306), the guide rail two (307) is provided with a pair and is symmetrically installed on the inner side of the pickling tank (101), and the guide rail two (307) is slidably mounted on the inner side of the pickling tank (101). The second slider (308), the second slider (309) is horizontally connected to the upper side of the second slider (308), the slag collecting shovel (310) is welded on the upper side of the second slider (309), and the slag collecting shovel (310) is welded on the upper side of the second slider (309). The cross section of the shovel (310) is in the shape of a tiger's mouth, the lower side of the second sliding plate (309) is evenly inlaid with the second magnet (311), and the first magnet (307) and the second magnet (311) are in one-to-one correspondence and The magnetic poles face opposite each other.

5. The pickling device for making iron paintings according to claim 2, characterized in that: a pressure relief cover (112) is centrally welded on the top of the pickling cover (102), and the pressure relief cover (112) The left and right sides of the pickling cover (102) are symmetrically welded with pressure relief pipes (113), and the left and right sides of the pickling cover (102) are symmetrically welded with a liquid storage box (114), and the liquid storage box (114) contains alkali. The outer port of the pressure relief pipe (113) is located in the liquid storage box (114) and is immersed in the alkaline solution.

6 . The pickling device for making iron paintings according to claim 2 , characterized in that: the bottom of the pickling tank ( 101 ) is evenly equipped with a Foma wheel ( 115 ). 7 .