A kind of pickling and passivation treatment equipment for stainless steel pipes and fittings

Abstract

The present invention discloses a pickling and passivation treatment device for stainless steel pipes and fittings, so as to overcome the defects of the prior art such as complex equipment, difficult operation and high failure rate. The device comprises a plurality of treatment tanks arranged in sequence, wherein corresponding treatment liquids are arranged in the treatment tanks, and an equipment frame is fixedly connected to the outside of the treatment tanks, and a linear motion mechanism and a reciprocating lifting mechanism are arranged on the frame. The linear motion table drives a material frame to realize linear motion. Under the action of a power generating component and a power matching component, the material frame completes the reciprocating motion of entering and exiting the treatment tank in sequence, so that the water pipes are subjected to pickling and passivation treatments.

Description

Technical Field

[0001] The invention relates to the technical field of pickling and passivation treatment equipment, in particular to a pickling and passivation treatment equipment for stainless steel pipes and fittings. Background Art

[0002] In the production process of stainless steel water pipes, in order to improve their corrosion resistance and surface finish, they are usually pickled and passivated. The purpose of pickling is to remove the oxide scale, rust and other impurities formed on the surface of the stainless steel water pipe during the processing, while passivation is to form a stable passivation film on the surface of the stainless steel to improve the corrosion resistance of the water pipe. These two processes are key links to ensure that the stainless steel water pipe has high quality and long life. The process of pickling and passivation in the prior art is generally preliminary cleaning-pickling-water washing-passivation-subsequent cleaning;

[0003] In order to reduce manpower and speed up production efficiency, automatic pickling and passivation equipment is usually used in the prior art. However, the existing pickling and passivation equipment has a complex structure and has a variety of motion mechanisms, and each set of motion mechanisms requires a set of power sources combined with sensors to achieve it. This makes the failure rate of the entire equipment high and maintenance difficult, resulting in poor equipment use effect and high use cost. Summary of the invention

[0004] In view of the above-mentioned deficiencies existing in the prior art, the object of the present invention is to provide a pickling and passivation treatment equipment with low failure rate, easy maintenance and excellent treatment effect.

[0005] The technical solution adopted by the present invention to achieve the above-mentioned purpose is: a pickling and passivation treatment equipment for stainless steel pipes and fittings, comprising a plurality of treatment pools arranged in sequence, each group of the treatment pools is provided with a corresponding treatment liquid, the outside of the plurality of treatment pools is fixedly connected with an equipment frame, the equipment frame is provided with a linear motion mechanism, the linear motion mechanism includes a linear motion table capable of linear motion, the linear motion table is provided with a reciprocating lifting mechanism, the reciprocating lifting mechanism includes a lifting motion table, the lifting motion table is fixedly connected with a mounting column, and the bottom of the mounting column is fixedly connected with a material frame;

[0006] The reciprocating lifting mechanism is matched with a power generating component, and a power matching part is provided on the equipment frame corresponding to each group of the treatment pools. When the linear motion table drives the power generating component to move linearly, the power generating component can cooperate with the power matching part to generate power, so that the lifting motion table performs a reciprocating motion of lowering and rising, and the material frame completes a reciprocating motion of entering and exiting the treatment pool.

[0007] In the above technical solution, in order to realize the linear motion of the linear motion table, the linear motion mechanism adopts the following structure:

[0008] The linear motion mechanism also includes a driving sprocket, a driven sprocket, a chain and a driving motor. A sliding groove is provided on the top of the equipment frame, and the linear motion table is slidably connected in the sliding groove. The driving sprocket is rotatably connected to one end of the equipment frame, and the driven sprocket is rotatably connected to the other end of the equipment frame. The chain is provided between the driving sprocket and the driven sprocket. The linear motion table is fixedly connected to a traction table, and the chain is fixedly connected to the traction table.

[0009] In the above technical solution, in order to ensure the excellent load-bearing capacity and movement stability of the material frame, the above linear motion mechanism adopts two groups, a power shaft is fixedly connected between the two groups of driving sprockets, and the above driving motor adopts one group, and one group of driving motors is dynamically connected to the power shaft;

[0010] At the same time, each group of the linear motion tables is provided with a group of the reciprocating lifting mechanisms, each group of the lifting motion tables is fixedly connected with connecting columns, and the bottom ends of the two groups of connecting columns are fixedly connected to the material frame.

[0011] In the above technical solution, in order to realize the reciprocating lifting motion of the lifting platform, the specific structure of the reciprocating lifting mechanism is as follows:

[0012] The reciprocating lifting mechanism also includes a mounting frame, a sliding column, and a reciprocating screw. The mounting frame is fixedly connected to the bottom of the linear motion table, the sliding column is fixedly connected to the mounting frame, the lifting table is slidably connected to the sliding column, the lifting table is threadedly connected to the reciprocating screw, and the reciprocating screw cooperates with the power generating assembly.

[0013] In the above technical solution, in order to realize the power generation component and the power matching component to generate power and realize the work of the reciprocating lifting mechanism, the specific structure is as follows:

[0014] The power generation assembly includes a worm, a worm wheel and a transmission gear, the reciprocating screw is fixedly connected to the worm wheel, the mounting frame is rotatably connected to the worm, the worm is meshed with the worm wheel, and the transmission gear is fixedly connected to the worm;

[0015] The power matching parts include a mounting base, a first rack, and a second rack. The mounting base is fixedly connected to each group of the treatment pools on the equipment frame. The first rack and the second rack are fixedly connected to the mounting base. The linear motion table can drive the transmission gear to engage with the first rack and the second rack through linear motion. When the transmission gear moves from one end of the first rack or the second rack to the other end, the lifting motion table realizes a complete descending motion or ascending motion on the reciprocating screw.

[0016] In the above technical solution, in order to turn over the water pipe inside the material frame to improve the pickling and passivation, the pipe can fully contact with the treatment liquid, and further optimize:

[0017] A gap is provided on the mounting base between the first rack and the second rack;

[0018] A flip plate is rotatably connected inside the material frame, and a plurality of holes are arranged on the flip plate. The rotation axis of the flip plate is located in the middle area of ​​the material frame, and one end of the rotation axis passes through the material frame and is fixedly connected to a power gear.

[0019] A third rack is fixedly connected to the power gear in the treatment pool. When the lifting platform is located at the bottom end of the reciprocating screw, the power gear can cooperate with the third rack.

[0020] In the above technical solution, in order to realize the material frame to be lowered at both ends of the equipment frame so as to facilitate the taking and placing of the water pipe, a fourth rack is fixedly connected to the equipment frame near one end thereof, and when the linear motion platform drives the transmission gear to move linearly on the fourth rack, the lifting motion platform drives the material frame to rise;

[0021] At the same time, a fifth rack is fixedly connected to the equipment frame near the other end thereof, and when the linear motion platform drives the transmission gear to move linearly on the fifth rack, the lifting motion platform drives the material frame to descend;

[0022] Of course, when the transmission gear moves from one end of the fourth rack or the fifth rack to the other end, the lifting platform realizes a complete ascending motion or descending motion on the reciprocating screw.

[0023] In the above technical solution, in order to facilitate effective control of the pickling passivation process, two groups of position sensors A are fixedly connected to each group of the gap intervals on the equipment frame, and a position detection target block matching the position sensor is fixedly connected to the linear motion table;

[0024] Position sensors B are fixedly connected to both ends of the equipment rack;

[0025] It also includes a PLC controller and a motor controller. The motor controller is electrically connected to the drive motor. The motor controller, position sensor A, and position sensor B are all electrically connected to the PLC controller.

[0026] Beneficial effects of the present invention:

[0027] 1. When the linear motion mechanism drives the linear motion table to perform linear motion, the linear motion table can drive the material frame to perform linear motion. At this time, under the action of the power generating component and the power matching part, the material frame can be gradually lowered during the linear motion process, so that the material frame and the water pipe inside it enter the corresponding treatment tank. At this time, the treatment liquid in the treatment tank can process the water pipe. After the treatment is completed, the linear motion table continues to drive the material frame to perform linear motion. At this time, under the action of the power generating component and the power matching part, the material frame can be gradually raised during the linear motion process, so that the material frame moves out of the corresponding treatment tank. When the linear motion table continues to drive the material frame to perform linear motion through the remaining treatment tanks, the material frame can be lowered and raised in sequence, thereby performing different process treatments on the water pipe, and finally realizing the pickling and passivation of the water pipe. Such a structure as a whole only needs to use the power of the linear motion mechanism to realize the operation of the entire equipment, so that the device has a lower failure rate and is easier to maintain and control.

[0028] 2. The power generating assembly and the power matching parts adopt the transmission structure of gears and racks, which meets the working requirements of the equipment. In addition, the self-locking effect of the worm and the worm wheel in the power generating assembly ensures that when the transmission gear is not engaged with the corresponding rack, the material frame will not fall due to gravity, thus ensuring the normal operation of the equipment. The structure is simple and easy to maintain.

[0029] 3. A gap interval is provided between the first rack and the second rack, and a third rack is fixedly connected in the treatment tank, and a flip plate is rotatably connected inside the material frame, and a power gear is fixedly connected to the rotating shaft of the flip plate, so that when the linear motion table drives the material frame to move to the gap interval, because the transmission gear is not engaged with the rack, and the worm and the worm wheel are self-locking, the material frame can move linearly in the treatment tank. When the material frame moves linearly, the power gear cooperates with the third rack to cause the flip plate to rotate, thereby flipping the water pipe thereon. When the linear motion table drives the material frame to move left and right within the motion range of the gap interval, the flip plate can be flipped left and right, thereby continuously flipping the water pipe, which can ensure that the water pipe is fully in contact with the corresponding treatment liquid, reduce dead angles, and improve the treatment effect of the water pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0031] Figure 2 It is a structural schematic diagram of a state of the present invention;

[0032] Figure 3 It is a structural schematic diagram of a state of the present invention;

[0033] Figure 4 It is a structural schematic diagram of a state of the present invention;

[0034] Figure 5 It is a side view structural schematic diagram of the present invention;

[0035] Figure 6 It is a structural schematic diagram of the reciprocating lifting mechanism in the present invention;

[0036] Figure 7 for Figure 6 Schematic diagram of the detailed structure of part a in the middle;

[0037] Figure 8 It is a schematic diagram of the matching structure of the power generating assembly and the power matching part in the present invention;

[0038] Fig. 9 for Figure 8 Schematic diagram of the detailed structure of part b in the middle;

[0039] Fig.10 It is a structural schematic diagram of another perspective when the power generating assembly and the power matching part in the present invention cooperate with each other;

[0040] Fig.11 This is a schematic diagram of the internal structure of the material frame in the present invention;

[0041] Fig.12 It is a schematic diagram of the installation structure of the position sensor A in the present invention.

[0042] In the figure: 100 treatment tank, 101 third rack;

[0043] 200 equipment rack, 201 fourth rack, 202 fifth rack, 203 position sensor A, 204 position sensor B;

[0044] 300 linear motion mechanism, 301 linear motion table, 302 driving sprocket, 303 driven sprocket, 304 chain, 305 driving motor;

[0045] 400 reciprocating lifting mechanism, 401 lifting motion platform, 402 mounting frame, 403 sliding column, 404 reciprocating screw;

[0046] 500 mounting columns;

[0047] 600 material frame, 601 flip plate, 602 hole, 603 power gear;

[0048] 700 power generation assembly, 701 worm, 702 worm wheel, 703 transmission gear;

[0049] 800 power matching part, 801 mounting base, 802 first rack, 803 second rack, 804 gap area. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] See also Figure 1-Figure 5 A pickling and passivation treatment device for stainless steel pipe fittings, comprising a plurality of treatment tanks 100 arranged in sequence, each treatment tank 100 is provided with a corresponding treatment liquid, the outside of the plurality of treatment tanks 100 is fixedly connected with an equipment frame 200, the equipment frame 200 is provided with a linear motion mechanism 300, the linear motion mechanism 300 comprises a linear motion table 301, a driving sprocket 302, a driven sprocket 303, a chain 304 and a driving motor 305, that is, a sliding groove is provided on the top of the equipment frame 200, and a sliding connection in the sliding groove A linear motion table 301 is connected, one end of the equipment frame 200 is rotatably connected to a driving sprocket 302, and the other end of the equipment frame 200 is rotatably connected to a driven sprocket 303, a chain 304 is provided between the driving sprocket 302 and the driven sprocket 303, a traction table is fixedly connected to the linear motion table 301, and the chain 304 is fixedly connected to the traction table, so that when the driving motor 305 drives the driving sprocket 302 to rotate, the chain 304 can generate movement, and then pull the linear motion table 301 to perform linear motion in the sliding groove.

[0052] In addition, a reciprocating lifting mechanism 400 is also provided on the linear motion table 301. The reciprocating lifting mechanism 400 includes a lifting table 401, a mounting frame 402, a sliding column 403, and a reciprocating screw 404. Specifically, the bottom of the linear motion table 301 is fixedly connected to the mounting frame 402, the mounting frame 402 is fixedly connected to the sliding column 403, the sliding column 403 is slidably connected to the lifting table 401, and the reciprocating screw 404 is threadedly connected to the lifting table 401. When the reciprocating screw 404 rotates, the lifting table 401 can perform reciprocating lifting motion on the sliding column 403.

[0053] The lifting platform 401 is fixedly connected with a mounting column 500, and the bottom of the mounting column 500 is fixedly connected with a material frame 600, so that when the linear motion platform 301 performs linear motion, the reciprocating lifting mechanism 400 and the material frame 600 can perform linear motion synchronously. Furthermore, in order to ensure the excellent load-bearing capacity and movement stability of the material frame 600, the above-mentioned linear motion mechanism 300 adopts two groups, and a power shaft is fixedly connected between the two groups of driving sprockets 302, and a drive motor 305 adopts one group, and one group of drive motors 305 is dynamically connected to the power shaft. At the same time, each group of linear motion platforms 301 is provided with a group of reciprocating lifting mechanisms 400, and each group of lifting platforms 401 is fixedly connected with a connecting column, and the bottom ends of the two groups of connecting columns are fixedly connected to the material frame 600.

[0054] Furthermore, each of the above-mentioned reciprocating lifting mechanisms 400 is matched with a power generating component 700, and a power matching component 800 is provided on the equipment frame 200 corresponding to each group of treatment pools 100. When the linear motion table 301 moves linearly, it can synchronously drive the power generating component 700 to move linearly, and the power generating component 700 can cooperate with the power matching component 800 to generate power, so that the lifting motion table performs a reciprocating motion of lowering and rising, and the material frame 600 also completes a reciprocating motion of entering and exiting the treatment pool 100.

[0055] More specifically, see Figure 6-Figure 8 as well as Fig.10 The power generating assembly 700 here includes a worm 701, a worm wheel 702 and a transmission gear 703, that is, the reciprocating screw 404 is fixedly connected with the worm wheel 702, the mounting frame 402 is rotatably connected with the worm 701, the worm 701 is meshedly connected with the worm wheel 702, and the transmission gear 703 is fixedly connected to the worm 701.

[0056] The power matching component 800 includes a mounting base 801, a first rack 802, and a second rack 803. The mounting base 801 is fixedly connected to each group of treatment pools 100 on the equipment frame 200. The first rack 802 and the second rack 803 are fixedly connected to the mounting base 801. The linear motion table 301 can drive the transmission gear 703 to engage with the first rack 802 and the second rack 803 through linear motion. When the transmission gear 703 moves from one end of the first rack 802 or the second rack 803 to the other end, the lifting motion table 401 realizes a complete descending motion or ascending motion on the reciprocating screw 404.

[0057] For example, when the linear motion table 301 drives the transmission gear 703 to pass through the first rack 802, the transmission gear 703 can rotate, which makes the worm 701 drive the worm wheel 702 to rotate, and finally the reciprocating screw 404 rotates. At this time, the lifting motion table 401 gradually moves from the top to the bottom of the reciprocating screw 404, which makes the material frame 600 gradually move into the treatment tank 100. When the transmission gear 703 disengages from the first rack 802, the lifting motion table 401 moves to the bottom of the reciprocating screw 404. At this time, the material frame 600 is completely located inside the treatment tank 100.

[0058] When the linear motion table 301 continues to drive the transmission gear 703 to pass through the second rack 803, the transmission gear 703 can rotate, which makes the worm 701 drive the worm wheel 702 to rotate, and finally the reciprocating screw 404 rotates. At this time, the lifting platform gradually moves from the bottom end to the top end of the reciprocating screw 404, which makes the material frame 600 gradually move from the processing tank 100 to the outside. When the transmission gear 703 disengages from the second rack 803, the lifting platform 401 moves to the top end of the reciprocating screw 404, and at this time the material frame 600 completely moves out of the processing tank 100.

[0059] When the linear motion table 301 drives the material frame 600 to continue to move through the remaining treatment tanks 100, the material frame 600 and its internal water pipes can gradually enter and exit the treatment tank 100 to complete the water pipe pickling passivation process.

[0060] For further optimization, see Figure 8 , Fig. 9 , Fig.11 In order to turn over the water pipe inside the material frame 600, so as to improve the pickling and passivation, the pipe can be fully in contact with the treatment liquid, and the pickling and passivation treatment effect of the water pipe is improved. A gap interval 804 is provided between the first rack 802 and the second rack 803 on the mounting base 801, and a turning plate 601 is rotatably connected inside the material frame 600, and a plurality of groups of holes 602 are provided on the turning plate 601. The rotating shaft of the turning plate 601 is located in the middle area of ​​the material frame 600, and one end of the rotating shaft passes through the material frame 600 and is fixedly connected to a power gear 603. The matching power gear 603 in the treatment tank 100 When the lifting platform 401 is fixedly connected with the third rack 101 and is located at the bottom end of the reciprocating screw 404, that is, when the material frame 600 is completely located inside the treatment tank 100, the power gear 603 can cooperate with the third rack 101. At this time, if the linear motion platform 301 continues to drive the material frame 600 to move linearly, the power gear 603 can rotate under the action of the third rack 101, and the water pipe inside the material frame 600 is located on the flip plate 601, so that the rotating flip plate 601 can flip the water pipe, thereby improving the contact effect between the pipe and the treatment liquid.

[0061] Furthermore, please refer to Figure 4 In order to realize the descent of the material frame 600 at both ends of the equipment frame 200 so as to facilitate the taking and placing of the water pipe, a fourth rack 201 is fixedly connected to the equipment frame 200 near one end thereof. When the linear motion table 301 drives the transmission gear 703 to move linearly on the fourth rack 201, the lifting motion table drives the material frame 600 to rise. At the same time, a fifth rack 202 is fixedly connected to the equipment frame 200 near the other end thereof. When the linear motion table 301 drives the transmission gear 703 to move linearly on the fifth rack 202, the lifting motion table drives the material frame 600 to descend. Similarly, when the transmission gear 703 moves from one end of the fourth rack 201 or the fifth rack 202 to the other end, the lifting motion table 401 realizes a complete ascending motion or descending motion on the reciprocating screw 404.

[0062] For example, when the linear motion table 301 is located at one end of the equipment frame 200, this end is the original position for loading. At this time, the lifting motion table 401 is located at the bottom end of the reciprocating screw 404. The water pipe can be placed inside the material frame 600. Then the linear motion table 301 drives the material frame 600 to move linearly. At this time, the transmission gear 703 cooperates with the fourth rack 201, so that the lifting motion table 401 drives the material frame 600 to rise. When the transmission gear 703 is disengaged from the fourth rack 201, the lifting motion table 401 is located at the top of the reciprocating screw 404, and the material frame 600 is located at the upper part.

[0063] When the linear motion platform 301 continues to move and reaches the treatment pool 100 at the end, the transmission gear 703 is disengaged from the second rack 803 at the end, and at this time, the lifting motion platform 401 is located at the top of the reciprocating screw 404.

[0064] When the linear motion table 301 continues to move, driving the transmission gear 703 to move linearly, the transmission gear 703 can cooperate with the fifth rack 202, so that the lifting table 401 drives the material frame 600 to gradually descend. When the transmission gear 703 is disengaged from the fifth rack 202, the material frame 600 is at the bottom and the water pipe can be taken out. At this time, the lifting table 401 is at the bottom end of the reciprocating screw 404.

[0065] Finally, see Figure 4 , Fig.12 In order to facilitate effective control of the pickling and passivation process, two groups of position sensors A203 are fixedly connected to each group of gap intervals 804 on the equipment frame 200, a position detection target block matching the position sensor is fixedly connected to the linear motion table 301, and position sensors B204 are fixedly connected to the equipment frame 200 at both ends of the equipment frame 200.

[0066] In addition, a PLC controller and a motor controller are also included. The motor controller is electrically connected to the drive motor 305 , and the motor controller, the position sensor A203 , and the position sensor B204 are all electrically connected to the PLC controller.

[0067] In this way, when the linear motion table 301 moves to one end of the equipment frame 200, it can be detected by the corresponding position sensor B204, so that the PLC controller can send a signal to the motor controller to control the drive motor 305 to stop working.

[0068] When the linear motion table 301 drives the material frame 600 to be located inside the treatment tank 100, and the transmission gear 703 is located in the gap interval 804 at this time, the position sensor A203 can detect the linear motion table 301, so that a signal can be sent to the motor controller through the PLC controller, so that the motor controller controls the motor to continuously change the rotation drive direction, so that the linear motion table 301 drives the material frame 600 to reciprocate between the two sets of position sensors A203. At this time, with the cooperation of the power gear 603 and the third rack 101, the water pipe inside the material frame 600 can be continuously flipped, thereby further improving the treatment effect of the water pipe pickling passivation.

[0069] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0070] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A pickling and passivation treatment device for stainless steel pipes and fittings, comprising a plurality of treatment tanks (100) arranged in sequence, each of the treatment tanks (100) being provided with a corresponding treatment liquid, and the outside of the plurality of treatment tanks (100) being fixedly connected with a device frame (200), characterized in that: The equipment frame (200) is provided with a linear motion mechanism (300), the linear motion mechanism (300) includes a linear motion table (301) capable of linear motion, the linear motion table (301) is provided with a reciprocating lifting mechanism (400), the reciprocating lifting mechanism (400) includes a lifting table (401), the lifting table (401) is fixedly connected to a mounting column (500), and the bottom of the mounting column (500) is fixedly connected to a material frame (600); The reciprocating lifting mechanism (400) is matched with a power generating assembly (700), and the reciprocating lifting mechanism (400) further comprises a mounting frame (402), a sliding column (403), and a reciprocating screw (404); the bottom of the linear motion platform (301) is fixedly connected to the mounting frame (402), the sliding column (403) is fixedly connected to the mounting frame (402), the sliding column (403) is slidably connected to the lifting platform (401), the lifting platform (401) is threadedly connected to the reciprocating screw (404), and the reciprocating screw (404) matches the power generating assembly (700); The equipment frame (200) is provided with a power matching component (800) corresponding to each group of the treatment pools (100); when the linear motion platform (301) drives the power generating component (700) to perform linear motion, the power generating component (700) can cooperate with the power matching component (800) to generate power, so that the lifting motion platform performs a reciprocating motion of lowering and ascending, and the material frame (600) completes a reciprocating motion of entering and exiting the treatment pool (100); The power generation assembly (700) comprises a worm (701), a worm wheel (702) and a transmission gear (703); the worm wheel (702) is fixedly connected to the reciprocating screw (404); the worm (701) is rotatably connected to the mounting frame (402); the worm (701) is meshedly connected to the worm wheel (702); and the transmission gear (703) is fixedly connected to the worm (701); The power matching component (800) includes a mounting base (801), a first rack (802), and a second rack (803); the mounting base (801) is fixedly connected to each group of the treatment pools (100) on the equipment frame (200); the first rack (802) and the second rack (803) are fixedly connected to the mounting base (801); the linear motion of the linear motion platform (301) can drive the transmission gear (703) to mesh with the first rack (802) and the second rack (803); and when the transmission gear (703) moves from one end of the first rack (802) or the second rack (803) to the other end, the lifting motion platform (401) realizes a complete descending motion or ascending motion on the reciprocating screw (404); A gap area (804) is provided on the mounting base (801) between the first rack (802) and the second rack (803); A flip plate (601) is rotatably connected inside the material frame (600), and a plurality of groups of holes (602) are provided on the flip plate (601). The rotation axis of the flip plate (601) is located in the middle area of ​​the material frame (600), and one end of the rotation axis passes through the material frame (600) and is fixedly connected to a power gear (603); The power gear (603) is matched with a third rack (101) fixedly connected to the treatment pool (100), and when the lifting platform (401) is located at the bottom end of the reciprocating screw (404), the power gear (603) can cooperate with the third rack (101).

2. A pickling and passivation treatment equipment for stainless steel pipes and fittings according to claim 1, characterized in that: The linear motion mechanism (300) further comprises a driving sprocket (302), a driven sprocket (303), a chain (304) and a driving motor (305); a sliding groove is provided on the top of the equipment frame (200); the linear motion platform (301) is slidably connected in the sliding groove; one end of the equipment frame (200) is rotatably connected to the driving sprocket (302); the other end of the equipment frame (200) is rotatably connected to the driven sprocket (303); the chain (304) is provided between the driving sprocket (302) and the driven sprocket (303); a traction platform is fixedly connected to the linear motion platform (301); and the chain (304) is fixedly connected to the traction platform.

3. A pickling and passivation treatment equipment for stainless steel pipes and fittings according to claim 2, characterized in that: The linear motion mechanism (300) is provided in two groups, a power shaft is fixedly connected between the two groups of driving sprockets (302), and the drive motor (305) is provided in one group, and the drive motor (305) is in power connection with the power shaft; Each group of the linear motion platforms (301) is provided with a group of the reciprocating lifting mechanisms (400), and each group of the lifting motion platforms (401) is fixedly connected to a connecting column, and the bottom ends of the two groups of the connecting columns are fixedly connected to the material frame (600).

4. A pickling and passivation treatment equipment for stainless steel pipes and fittings according to claim 3, characterized in that: A fourth rack (201) is fixedly connected to the equipment frame (200) near one end thereof, and when the linear motion platform (301) drives the transmission gear (703) to move linearly on the fourth rack (201), the lifting motion platform drives the material frame (600) to rise; A fifth rack (202) is fixedly connected to the equipment frame (200) near the other end thereof, and when the linear motion platform (301) drives the transmission gear (703) to move linearly on the fifth rack (202), the lifting motion platform drives the material frame (600) to descend; When the transmission gear (703) moves from one end of the fourth rack (201) or the fifth rack (202) to the other end, the lifting platform (401) realizes a complete ascending movement or descending movement on the reciprocating screw (404).

5. A pickling and passivation treatment equipment for stainless steel pipes and fittings according to claim 4, characterized in that: Two groups of position sensors A (203) are fixedly connected to each group of the gap intervals (804) on the equipment rack (200), and a position detection target block matching the position sensors is fixedly connected to the linear motion table (301); Position sensors B (204) are fixedly connected to both ends of the equipment rack (200); It also includes a PLC controller and a motor controller, wherein the motor controller is electrically connected to the drive motor (305), and the motor controller, the position sensor A (203), and the position sensor B (204) are all electrically connected to the PLC controller.

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