Environment-friendly closed pickling production line

Abstract

The utility model discloses an environment-friendly closed pickling production line, which relates to the technical field of pickling processing and comprises a base, and a box is fixedly mounted at the top of the base. By the adoption of the structure, the bearing frame can be flexibly adjusted to move in the pickling cavity, the cleaning cavity and the drying cavity in sequence, cleaning can be carried out after pickling is completed, meanwhile, hot air is exhausted into the drying pipe frame through the hot air blower and exhausted through the air spraying pipe, the hot air can be evenly promoted to be blown to the outer surfaces of parts, and the cleaning efficiency is improved. And a third motor is adopted to drive the bearing frame to rotate, so that the parts can be promoted to make more comprehensive contact with cleaning liquid and drying hot air in the cleaning and drying processes, the whole equipment can be promoted to have the pickling and drying functions at a time in the use period, the pickling machining steps are reduced, and the machining efficiency is improved. And the production and processing cost can be reduced while the pickling processing efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pickling processing, and particularly relates to an environmentally friendly closed pickling production line. Background Art

[0002] Surface oxides, rust, oil and other impurities are removed to improve the cleanliness and finish of the metal surface. Pickling usually uses acidic solutions (such as hydrochloric acid, sulfuric acid, etc.) to treat the surface. The surface oxides and impurities are dissolved or corroded through the chemical action of the acidic solution on the metal surface.

[0003] The gantry crane of the pickling line is a special equipment for transporting workpieces in the pickling line. The gantry cranes in traditional workshops are all gantry cranes that lift parts through a hook, and then change the position of the parts by moving the gantry crane for different degrees of pickling. During the movement of most gantry cranes, the parts are prone to shaking, which will cause wear on the hook and it is also easy to fall off the hook and fall, posing a safety hazard. Moreover, the gantry crane can only pass all the cleaning fluids on the production line at one time. The long cleaning time of the parts leads to low efficiency of the entire production line and poor adjustability.

[0004] The Chinese patent with the publication number "CN211284552U" discloses a parts pickling production line, which includes a loading position, a gantry crane, a crane track, a cleaning tank and an electrical control system; the gantry crane includes a crossbeam, a walking body and a lifting arm. The walking body and the lifting arm are symmetrically installed on both sides of the crossbeam, the lower end of the lifting arm is connected to the sling, the sling supports the parts to be pickled, and the walking body moves freely on the crane track; multiple cleaning tanks are placed between the crane tracks on both sides, and the slings are placed at both ends of the cleaning tanks; the two groups of lifting arms are driven by servo motors and reducers to drive the lead screw to rise and fall, which can realize the synchronous lifting, shaking and tilting of the two groups of arms; the electric locking mechanism is installed at the lower end of the lifting arm, which can lock the sling to ensure that the sling will not fall off. The parts pickling production line described in the utility model has the function of automatically transporting parts to the program set position and putting them down, unlocking and returning.

[0005] Although the above device can assist in adjustment during use, it can only clean the pickled parts during the specific pickling process. In addition to cleaning, the pickling process usually requires drying of the items after pickling. Drying can help remove residual moisture, prevent rust or corrosion of items, and improve the surface quality of items. Obviously, the above device needs to be equipped with a drying device for drying after cleaning. The overall operation steps are relatively complicated, which reduces the production and processing efficiency and increases the processing cost. In addition, the pickling process is in an external environment, and there is an inevitable risk of acid volatilization and sputtering during the pickling process. It can be seen that there are certain defects and inconveniences in the overall use and operation process, so it needs to be improved. Utility Model Content

[0006] In view of the problems mentioned in the background technology, the purpose of the utility model is to provide an environmentally friendly closed pickling production line to solve the problems raised by the background technology.

[0007] The above technical objectives of the utility model are achieved through the following technical solutions:

[0008] An environmentally friendly closed pickling production line comprises a base, a box body is fixedly installed on the top of the base, a mounting platform is fixedly installed on the bottom of the box body, a pickling device is fixed on the top of the mounting platform, a bearing device is fixedly installed on one side of the box body, a closed door is hinged on one side of the box body near the outlet, and one end of the bearing device near the closed door passes through the closed door;

[0009] The pickling device comprises a pickling tank, wherein a pickling chamber is provided at one end of the pickling tank away from the closed door, a cleaning chamber is provided in the middle of the pickling tank, a drying mechanism is provided at one end of the pickling tank away from the pickling chamber, and electromagnetic valves are fixedly installed at a linear arrangement with equal intervals at the lower end of the side of the pickling tank away from the carrying device, and the input ends of the electromagnetic valves arranged at equal intervals are respectively connected to the interior of the pickling chamber, the cleaning chamber and the drying device. The pickling device is provided so that during use, the cleaning liquid and the pickling liquid can be accommodated through the cleaning chamber and the pickling chamber, and the movable design of the carrying mechanism can be used to flexibly pickle and clean parts. At the same time, the drying mechanism can be started to assist in drying after the pickling and cleaning are completed, which can improve the convenience and efficiency of parts production and processing. Moreover, the pickling device is arranged as a whole inside the box body, which can avoid the situation where the pickling liquid pollutes the external environment, and can improve the overall environmental protection performance of the equipment. After the production and processing are completed, the electromagnetic valve can be opened to discharge the water, which is convenient for the operation and use of the equipment.

[0010] As an optimal technical solution, the drying mechanism includes a drying chamber, a drying tube rack and a hot air blower. The drying chamber is opened at one end of the pickling tank near the closed door. The drying tube rack is fixedly installed in the drying chamber in a coiled state at equal intervals. The hot air blower is fixedly installed on one side of the pickling tank near the closed door. The output end of the hot air blower is connected to the drying tube rack inside the drying chamber. Jet pipes are fixedly installed on the inner side of the drying tube rack at equal intervals. A drying mechanism is set up, and the pickled parts can be transferred to the interior of the drying chamber through a carrying device. At this time, the hot air blower is started to generate hot air, and the hot air is discharged through the jet pipes at the drying tube rack, which can play a better drying function.

[0011] As an optimal technical solution, feeding pipes are fixedly installed in the middle of the top of the box and at the end away from the closed door. The output ends of the two groups of feeding pipes pass through the box. The output ends of the two groups of feeding pipes correspond to the cleaning chamber and the pickling chamber. The feeding pipes are provided to facilitate the addition of pickling liquid and cleaning liquid, which can improve the convenience of the device during use.

[0012] As an optimal technical solution, the supporting device includes a bottom rail, which is fixedly installed on the top of the mounting table at one end away from the solenoid valve, and a first motor is fixedly installed on the end of the bottom rail away from the closed door. The output end of the first motor passes through the bottom rail and a first screw is fixedly installed. The first screw is rotatably connected to the inside of the bottom rail, and a slider is threadedly connected to the outer surface of the first screw. A height adjustment mechanism is fixedly installed on the top of the slider, and a supporting mechanism is fixedly installed on the top of the height adjustment mechanism. The supporting device is provided, and the pickling parts can be driven by the first motor and the first screw through the height adjustment mechanism, so as to facilitate automated pickling processing.

[0013] As an optimal technical solution, the bearing mechanism includes a cross bar, which is fixedly installed on the upper end of the sliding bar, and a support frame is fixedly installed at an equal interval on the bottom of the cross bar. A third motor is fixed on the inner side of the support frame, and a rotating shaft is fixedly installed on the bottom output end of the third motor. A bearing frame is fixedly installed on the outer surface of the rotating shaft at equal intervals. The bearing mechanism can be set up, and the rotating shaft can be driven to rotate by starting the third motor, and the rotating shaft drives the bearing frame to rotate, which can assist in adjusting the movement of parts and improve the pickling, cleaning and drying efficiency of parts.

[0014] As a preferred technical solution, an empty groove is provided at the lower end of the closed door on one side close to the bottom rail, a stopper is fixedly installed at the lower end of the box body on one side close to the bottom rail, and a baffle is fixedly installed at the upper end of the closed door on one side located at the empty groove, and the baffle covers the top front end of the bottom rail, and is provided with an empty groove and an end portion of the bottom rail. The setting of the stopper and the baffle can close and block the top front end of the bottom rail, thereby improving the closing performance of the box body.

[0015] As an optimal technical solution, the height adjustment mechanism includes a base plate, which is fixedly installed on the top of the slider, and a vertical rail is fixedly installed on the top of the base plate. A second motor is fixedly installed on the bottom of the vertical rail, and a second screw rod is fixedly installed on the output end of the second motor. The second screw rod is rotatably connected to the vertical rail, and a sliding rod is threadedly connected to the outer surface of the second screw rod. The upper end of the sliding rod passes through the vertical rail and is fixedly connected to the bearing mechanism. A height adjustment mechanism is provided, and the second screw rod can be driven by the second motor to drive the sliding rod to move on the inner side of the vertical rail during use. The pickling height can be flexibly adjusted by moving the sliding rod up and down, thereby improving the overall adaptability of the equipment.

[0016] In summary, the utility model mainly has the following beneficial effects:

[0017] First, the second motor is used to drive the second screw rod to drive the slide rod to move up and down inside the vertical rail. The carrier frame can be placed in the pickling tank by moving the slide rod up and down. The slide rod is set to move up and down, and the height can be flexibly adjusted according to the number of parts carried by the carrier frame, which is convenient for pickling. At the same time, during the pickling process, the third motor is used to drive the rotating shaft to rotate, and the rotating shaft drives the carrier frame to rotate inside the pickling teeth, so that the parts can be in a rotating state, which can increase the contact area between the parts and the pickling liquid or the tilting liquid, so that the parts can be more effectively in contact with the pickling liquid and the cleaning liquid, which can improve the overall pickling processing quality and pickling efficiency of the equipment;

[0018] Secondly, the first motor is used to drive the slider to slide, so as to adjust the linear displacement of the carrier frame and cooperate with the telescopic adjustment setting of the height adjustment mechanism, so as to flexibly adjust the carrier frame to move in the pickling chamber, the cleaning chamber and the drying chamber in sequence, and to clean after the pickling is completed. At the same time, the hot air blower can be started again, and the hot air blower can discharge the hot air into the interior of the drying tube frame and discharge it through the jet pipe, so as to evenly promote the hot air to be blown to the outer surface of the parts, and to play a strong drying function. In addition, since the third motor is used to drive the carrier frame to rotate, the parts can be more fully contacted with the cleaning liquid and the drying hot air during the cleaning and drying process, so as to promote the pickling and drying functions of the whole equipment at one time during use, thereby reducing the steps of the pickling process, and can reduce the production and processing costs while improving the pickling process efficiency. In addition, during the pickling process, the whole equipment is located inside the box body, so as to avoid the situation where the pickling liquid pollutes the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is a side view structural schematic diagram of the utility model;

[0021] Figure 3 It is a schematic diagram of the internal structure of the utility model;

[0022] Figure 4 It is a schematic diagram of the structure of the load-bearing device of the utility model;

[0023] Figure 5 It is a structural schematic diagram of a drying tube rack of the utility model.

[0024] 1. Base; 2. Box; 3. Mounting table; 4. Closed door; 5. Carrying device; 51. Bottom rail; 52. First motor; 53. First screw rod; 54. Sliding block; 55. Height adjustment mechanism; 551. Bottom plate; 552. Vertical rail; 553. Second motor; 554. Second screw rod; 555. Sliding bar; 56. Carrying mechanism; 561. Cross bar; 562. Support frame; 563. Third motor; 564. Rotating shaft; 565. Carrying frame; 6. Pickling device; 61. Pickling tank; 62. Pickling chamber; 63. Drying mechanism; 631. Drying chamber; 632. Drying pipe rack; 633. Hot air blower; 634. Jet pipe; 64. Solenoid valve; 65. Cleaning chamber; 7. Feeding pipe; 8. Empty slot; 9. Block; 10. Baffle. DETAILED DESCRIPTION

[0025] Example

[0026] refer to Figures 1 to 5 The environmentally friendly closed pickling production line described in this embodiment includes a base 1, a box body 2 is fixedly installed on the top of the base 1, a mounting platform 3 is fixedly installed at the bottom of the box body 2, a pickling device 6 is fixed on the top of the mounting platform 3, a bearing device 5 is fixedly installed on one side of the box body 2, a closed door 4 is hinged on one side of the box body 2 near the outlet, and one end of the bearing device 5 near the closed door 4 passes through the closed door 4;

[0027] The pickling device 6 comprises a pickling tank 61, wherein a pickling chamber 62 is provided at one end of the pickling tank 61 away from the closed door 4, a cleaning chamber 65 is provided in the middle of the pickling tank 61, a drying mechanism 63 is provided at one end of the pickling tank 61 away from the pickling chamber 62, and electromagnetic valves 64 are fixedly installed linearly arranged at equal intervals at the lower end of the side of the pickling tank 61 away from the carrying device 5, and the input ends of the electromagnetic valves 64 arranged at equal intervals are respectively connected to the inside of the pickling chamber 62, the cleaning chamber 65 and the drying device, and the pickling device 6 is arranged so that during use, The cleaning chamber 65 and the pickling chamber 62 can accommodate cleaning liquid and pickling liquid. With the movable design of the supporting mechanism 56, the parts can be flexibly pickled and cleaned. At the same time, the drying mechanism 63 can be started after the pickling and cleaning is completed to assist in drying, which can improve the convenience and efficiency of parts production and processing. Moreover, the whole is arranged inside the box body 2 to avoid the pickling liquid from polluting the external environment, which can improve the overall environmental protection performance of the equipment. After the production and processing is completed, the solenoid valve 64 can be opened to discharge the water, which is convenient for the operation and use of the equipment.

[0028] refer to Figure 1-Figure 2A feeding pipe 7 is fixedly installed in the middle of the top of the box body 2 and at one end away from the closed door 4. The output ends of the two groups of feeding pipes 7 pass through the box body 2. The output ends of the two groups of feeding pipes 7 correspond to the cleaning chamber 65 and the pickling chamber 62. The feeding pipe 7 is provided, and the pickling liquid or the cleaning liquid can be pumped into the cleaning chamber 65 and the pickling chamber 62 by an external water pump during use, which is convenient for adding the pickling liquid and the cleaning liquid, and can improve the convenience of the device during use.

[0029] refer to Figure 1 , Figure 3 and Figure 5 The drying mechanism 63 includes a drying chamber 631, a drying pipe rack 632 and a hot air blower 633. The drying chamber 631 is opened at one end of the pickling tank 61 near the closed door 4. The drying pipe rack 632 is fixedly installed in the drying chamber 631 in a coiled shape at equal intervals. The hot air blower 633 is fixedly installed on one side of the pickling tank 61 near the closed door 4. The output end of the hot air blower 633 is connected to the drying pipe rack 632 inside the drying chamber 631. Jet pipes 634 are fixedly installed on the inner side of the drying pipe rack 632 at equal intervals. The drying mechanism 63 is set, and the pickled parts can be transferred to the inside of the drying chamber 631 through the carrying device 5. At this time, the hot air blower 633 is started to generate hot air, and the hot air is discharged through the jet pipe 634 at the drying pipe rack 632, which can play a better drying function and can quickly dry the parts after the equipment is processed, which can improve the pickling efficiency of the parts and reduce the pickling cost.

[0030] refer to Figure 1-Figure 4 The bearing device 5 includes a bottom rail 51, which is fixedly mounted on the top of the mounting platform 3 at one end away from the solenoid valve 64. A first motor 52 is fixedly mounted on the end of the bottom rail 51 away from the closed door 4. The output end of the first motor 52 passes through the bottom rail 51 and is fixedly mounted with a first screw rod 53. The first screw rod 53 is rotatably connected to the inside of the bottom rail 51. A slider 54 is threadedly connected to the outer surface of the first screw rod 53. A height adjustment mechanism 55 is fixedly mounted on the top of the slider 54. A bearing mechanism 56 is fixedly mounted on the top of the height adjustment mechanism 55. The bearing device 5 is provided, and the pickling parts can be driven by the first motor 52 and the first screw rod 53 through the height adjustment mechanism 55, which facilitates automated pickling processing and can improve the production and processing efficiency of the equipment. At the same time, in conjunction with the box body 2, the pickling parts can be automatically transferred to avoid acid contamination of the external environment, which can improve the safety of production and processing of the equipment.

[0031] refer to Figure 1-Figure 4The height adjustment mechanism 55 includes a bottom plate 551, which is fixedly mounted on the top of the slider 54. A vertical rail 552 is fixedly mounted on the top of the bottom plate 551. A second motor 553 is fixedly mounted on the bottom of the vertical rail 552. A second screw rod 554 is fixedly mounted on the output end of the second motor 553. The second screw rod 554 is rotatably connected to the vertical rail 552. A slide rod 555 is threadedly connected to the outer surface of the second screw rod 554. The upper end of the slide rod 555 penetrates the vertical rail 552 and is fixedly connected to the bearing mechanism 56. The height adjustment mechanism 55 is set. During use, the second motor 553 can be used to drive the second screw rod 554 to rotate on the inner side of the vertical rail 552. The screw rod squeezes the slide rod 555 to assist in driving the slide rod 555 to move on the inner side of the vertical rail 552. The pickling height can be flexibly adjusted by moving the slide rod 555 up and down, which can improve the overall adaptability of the equipment and the convenience of production and processing of the equipment.

[0032] refer to Figure 1-Figure 4 The bearing mechanism 56 includes a cross bar 561, which is fixedly installed on the upper end of the sliding bar 555. A support frame 562 is fixedly installed at an equal interval on the bottom of the cross bar 561. A third motor 563 is fixed on the inner side of the support frame 562. A rotating shaft 564 is fixedly installed on the bottom output end of the third motor 563. A bearing frame 565 is fixedly installed on the outer surface of the rotating shaft 564 at an equal interval. The bearing mechanism 56 is set up, and the rotating shaft 564 can be driven to rotate by starting the third motor 563, and the rotating shaft 564 drives the bearing frame 565 to rotate, which can assist in adjusting the movement of the parts, enable the parts to be more fully exposed to the pickling solution and cleaning and drying hot air, can improve the pickling, cleaning and drying efficiency of the parts, and can improve the production and processing quality of the equipment.

[0033] refer to Figure 1-Figure 2 A slot 8 is provided at the lower end of the closed door 4 on one side close to the bottom rail 51, a block 9 is fixedly installed at the lower end of the box body 2 on one side close to the bottom rail 51, and a baffle 10 is fixedly installed at the upper end of the closed door 4 on one side located at the slot 8, and the baffle 10 covers the top front end of the bottom rail 51, and the slot 8 and the end of the bottom rail 51 are provided. The setting of the block 9 and the baffle 10 can be achieved by fitting the baffle 10 and the block 9 in the gap of the bottom rail 51 to close and block the top front end of the bottom rail 51, thereby improving the sealing performance of the box body 2, and sealing gaskets are adaptively provided in the slot 8 and on the inner side of the block 9 and the baffle 10, and sealing is performed by the sealing gasket to improve the sealing performance.

[0034] Principle and advantages of use: By setting the bearing device 5, during the pickling process of the equipment, the parts to be pickled can be placed inside the bearing rack 565, and the second motor 553 is started to run, and the second motor 553 is used to drive the second screw rod 554 to drive the slide bar 555 to move up and down inside the vertical rail 552, and the bearing rack 565 can be placed inside the pickling tank 61 by the up and down movement of the slide bar 555. The setting of the up and down adjustment movement of the slide bar 555 can flexibly adjust the height according to the number of parts carried by the bearing rack 565, which is convenient for pickling. At the same time, during the pickling process, the third motor 563 is used to drive the rotating shaft 564 to rotate, and the rotating shaft 564 drives the bearing rack 565 to rotate inside the pickling tooth, so that the parts can be in a rotating state, which can increase the contact area between the parts and the pickling liquid or the tilting liquid, and enable the parts to contact the pickling liquid and the cleaning liquid more effectively, which can improve the overall pickling processing quality and pickling efficiency of the equipment;

[0035] The pickling device 6 is arranged to cooperate with the bearing device 5. During the pickling process, the sliding rod 555 can be moved up and down to facilitate the telescopic adjustment of the bearing frame 565 from the pickling chamber 62, the cleaning chamber 65 and the drying chamber 631 in the pickling tank 61. At this time, the first motor 52 is started to drive the first screw rod 53 to drive the slider 54 to slide on the inner side of the bottom rail 51. The linear displacement of the bearing frame 565 can be adjusted by sliding the slider 54. The telescopic adjustment setting of the height adjustment mechanism 55 can flexibly adjust the bearing frame 565 to adjust and move in the pickling chamber 62, the cleaning chamber 65 and the drying chamber 631 in sequence. After the pickling is completed, cleaning can be carried out. At the same time, the hot air blower 633 can be started to run, and the hot air blower 633 can discharge the hot air into the interior of the drying pipe rack 632 and discharge it through the jet pipe 634. It can evenly promote hot air to be blown to the outer surface of the parts, and can play a strong drying function. In addition, since the third motor 563 is used to drive the carrier 565 to rotate, the parts can be more fully exposed to the cleaning liquid and drying hot air during the cleaning and drying process, and the entire device can perform pickling and drying functions at one time during use, reducing the steps of pickling processing, and can reduce production and processing costs while improving the pickling processing efficiency. After use, the closed door 4 is opened, and the opening of the box body 2 can be opened at this time. At the same time, the first motor 52 is continued to be started to drive the first screw rod 53 to drive the slider 54 to move forward, so that the slider 54 is moved out from the inside of the box body 2, so as to facilitate the removal of the parts inside the carrier 565, and improve the overall processing convenience of the device.

Claims

1. An environmentally friendly closed pickling production line, comprising a base (1), characterized in that: A box body (2) is fixedly mounted on the top of the base (1), a mounting platform (3) is fixedly mounted on the bottom of the box body (2), a pickling device (6) is fixedly mounted on the top of the mounting platform (3), a bearing device (5) is fixedly mounted on one side of the box body (2), a closed door (4) is hingedly connected to one side of the box body (2) close to the outlet, and one end of the bearing device (5) close to the closed door (4) passes through the closed door (4); The pickling device (6) comprises a pickling tank (61), a pickling chamber (62) is provided at one end of the pickling tank (61) away from the closed door (4), a cleaning chamber (65) is provided in the middle of the pickling tank (61), a drying mechanism (63) is provided at one end of the pickling tank (61) away from the pickling chamber (62), and electromagnetic valves (64) are fixedly installed at equal intervals and arranged linearly at the lower end of one side of the pickling tank (61) away from the supporting device (5), and the input ends of the electromagnetic valves (64) arranged at equal intervals are respectively connected to the inside of the pickling chamber (62), the cleaning chamber (65) and the drying device.

2. An environmentally friendly closed pickling production line according to claim 1, characterized in that: A feeding pipe (7) is fixedly installed in the middle of the top of the box body (2) and at one end away from the closed door (4), and the output ends of the two groups of feeding pipes (7) pass through the box body (2), and the output ends of the two groups of feeding pipes (7) correspond to the cleaning chamber (65) and the pickling chamber (62).

3. The environmentally friendly closed pickling production line according to claim 1 is characterized in that: The drying mechanism (63) comprises a drying chamber (631), a drying tube rack (632) and a hot air blower (633); the drying chamber (631) is opened at one end of the pickling tank (61) close to the closed door (4); the drying tube rack (632) is fixedly installed in the drying chamber (631) in a coiled state at equal intervals; the hot air blower (633) is fixedly installed on one side of the pickling tank (61) close to the closed door (4); the output end of the hot air blower (633) is connected to the drying tube rack (632) in the drying chamber (631); and jet pipes (634) are fixedly installed at equal intervals on the inner side of the drying tube rack (632).

4. The environmentally friendly closed pickling production line according to claim 1 is characterized in that: The bearing device (5) comprises a bottom rail (51), the bottom rail (51) being fixedly mounted on the top of the mounting platform (3) at one end away from the solenoid valve (64), a first motor (52) being fixedly mounted on the end of the bottom rail (51) away from the closed door (4), an output end of the first motor (52) passing through the bottom rail (51) being fixedly mounted with a first screw rod (53), the first screw rod (53) being rotatably connected to the inside of the bottom rail (51), a slider (54) being threadedly connected to the outer surface of the first screw rod (53), a height adjustment mechanism (55) being fixedly mounted on the top of the slider (54), and a bearing mechanism (56) being fixedly mounted on the top of the height adjustment mechanism (55).

5. The environmentally friendly closed pickling production line according to claim 4 is characterized in that: The height adjustment mechanism (55) comprises a base plate (551), the base plate (551) is fixedly mounted on the top of the slider (54), a vertical rail (552) is fixedly mounted on the top of the base plate (551), a second motor (553) is fixedly mounted on the bottom of the vertical rail (552), a second screw rod (554) is fixedly mounted on the output end of the second motor (553), the second screw rod (554) is rotatably connected to the vertical rail (552), a sliding rod (555) is threadedly connected to the outer surface of the second screw rod (554), and the upper end of the sliding rod (555) passes through the vertical rail (552) and is fixedly connected to the bearing mechanism (56).

6. The environmentally friendly closed pickling production line according to claim 5 is characterized in that: The bearing mechanism (56) comprises a cross bar (561), wherein the cross bar (561) is fixedly mounted on the upper end of the sliding bar (555), a support frame (562) is fixedly mounted at an equal interval on the bottom of the cross bar (561), a third motor (563) is fixedly mounted on the inner side of the support frame (562), a rotating shaft (564) is fixedly mounted on the bottom output end of the third motor (563), and a bearing frame (565) is fixedly mounted at an equal interval on the outer surface of the rotating shaft (564).

7. An environmentally friendly closed pickling production line according to claim 6, characterized in that: A hollow groove (8) is provided at the lower end of the closed door (4) on one side close to the bottom rail (51); a stopper (9) is fixedly installed at the lower end of the box body (2) on one side close to the bottom rail (51); a baffle (10) is fixedly installed at the upper end of the closed door (4) on one side located at the hollow groove (8); and the baffle (10) covers the top front end of the bottom rail (51).

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