Energy-saving pickling tank for corrosion-resistant stainless steel pipe

Abstract

The utility model discloses an energy-saving pickling tank for a corrosion-resistant stainless steel pipe, which comprises a pickling tank main body, and a first partition plate and a second partition plate are respectively and fixedly mounted on two sides of the inner wall of the pickling tank main body, so that the pickling tank main body is divided into an acid adding cavity, a pickling cavity and an equipment cavity through the first partition plate and the second partition plate; an acid inlet is fixedly formed in the upper side of the front end of the pickling tank body in a penetrating mode, a supporting transverse rod is fixedly installed at the upper end of the acid adding cavity, a stirring motor is fixedly installed at the upper end of the supporting transverse rod, and a transmission shaft part at the lower end of the stirring motor penetrates through the supporting transverse rod and is fixedly provided with a stirring shaft rod used for stirring the interior of the acid adding cavity; a first filter screen plate is fixedly installed at the lower side end of the first partition plate in a penetrating mode, an acid discharging cavity is fixedly installed at the lower end of the acid pickling cavity in a communicating mode, and a limiting ring is fixedly installed on the inner wall of the middle of the acid discharging cavity. According to the pickling device, the pickling efficiency of the surface of the stainless steel pipe is improved, and meanwhile pickling liquid can be recycled.

Description

Technical Field

[0001] The utility model relates to the technical field of stainless steel pipe processing, in particular to an energy-saving pickling tank for corrosion-resistant stainless steel pipes. Background Art

[0002] Stainless steel pipe is a rust-resistant steel pipe typically manufactured from acid- and heat-resistant steel billets through processes such as heating, perforation, sizing, hot rolling, and cutting. Common stainless steel pipe materials include 304 and 316, which offer excellent corrosion and heat resistance. Stainless steel pipe is widely used in the petroleum, chemical, machinery manufacturing, food, medical, and light industrial sectors, serving as industrial fluid transport piping and mechanical equipment accessories and parts. Heat exchanger tubes are particularly popular in the power and nuclear energy sectors. Due to its aesthetic and durability, stainless steel pipe is often used in home renovation applications such as stair railings, handrails, and security screens. Furthermore, stainless steel pipe is commonly used in the manufacture of solar water heaters and in urban water supply, heating, and drainage systems. Stainless steel pipe is also used in pipeline renovations in older residential communities and cities, hotel water systems, plazas, commercial complexes, and office buildings.

[0003] Among them, during the production process of stainless steel pipes, impurities such as oil, oxides, etc. are often attached to the surface of stainless steel pipes, which need to be removed by pickling to ensure the quality of subsequent processing and the performance of the final product.

[0004] However, when the existing technology is actually used, the traditional pickling tank usually pickles the surface of the stainless steel pipe in a static manner. However, when the surface of the stainless steel pipe is pickled in a static manner, the attachments on the surface of the stainless steel pipe are likely to remain on the surface of the stainless steel pipe, resulting in uneven pickling effect of the stainless steel pipe, thereby affecting the pickling efficiency of the stainless steel pipe. Utility Model Content

[0005] The purpose of the utility model is to provide an energy-saving pickling tank for corrosion-resistant stainless steel pipes, so as to solve the problem that the traditional pickling tank proposed in the above background technology usually pickles the surface of the stainless steel pipe in a static manner, but when the surface of the stainless steel pipe is pickled in a static manner, the attachments on the surface of the stainless steel pipe are likely to remain on the surface of the stainless steel pipe, resulting in uneven pickling effect of the stainless steel pipe, thereby affecting the pickling efficiency of the stainless steel pipe.

[0006] The turret of the present invention is provided with a first filter screen, a second filter screen and a second filter screen.

[0007] A driving motor is fixedly installed at the bottom of the equipment cavity, a first pulley is fixedly installed on the inner transmission shaft part of the driving motor, the outer end of the first pulley is connected to the second pulley through a belt transmission, a transmission main shaft is fixedly installed in the middle of the second pulley, annular support frames are fixedly installed on the outer curved surfaces of both ends of the transmission main shaft, a telescopic hole is opened on the inner side of the annular support frame, a telescopic column is movably connected to the inner wall of the telescopic hole, a limiting cam for clamping and limiting the two ends of the stainless steel pipe is fixedly installed on the outer end of the limiting cam, and a support spring is fixedly installed on the outer side of the limiting cam.

[0008] Preferably, there are two stirring motors, which are symmetrically distributed on both sides of the upper end of the supporting cross bar.

[0009] Preferably, there are two acid discharge chambers, which are symmetrically distributed at the lower end of the pickling chamber, and the lower end of the acid discharge chamber is conical.

[0010] Preferably, a switch valve is fixedly installed on the outside of the acid discharge pipe.

[0011] Preferably, the transmission main shaft is rotatably connected to the inner wall of the pickling chamber through a rotating shaft.

[0012] Preferably, the support spring is fixedly mounted on the inner side of the annular support frame at one end away from the limiting protrusion.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. According to the utility model, when the pickling liquid enters the pickling chamber, the pickling liquid will pickle the stainless steel pipe that is limited and fixed by the limited convex disc. When the pickling liquid pickles the stainless steel pipe, the driving motor is turned on by control. When the driving motor is turned on, it will drive the first pulley to rotate. When the first pulley rotates, it will drive the second pulley to rotate through the belt transmission. When the second pulley rotates, it will drive the transmission main shaft to rotate. When the transmission main shaft rotates, it will drive the annular support frame to rotate. When the annular support frame rotates, it will synchronously drive the stainless steel pipe that is limited and fixed by the limited convex disc to rotate. When the stainless steel pipe rotates, the attachments remaining on the surface of the stainless steel pipe will fall off under the force generated by the rotation of the stainless steel pipe surface and the pickling liquid, thereby achieving pickling of the stainless steel pipe while the surface of the stainless steel pipe can be fully pickled, thereby improving the pickling efficiency of the stainless steel pipe surface.

[0015] 2. The utility model also opens the acid discharge pipe when the pickling of the stainless steel pipe is completed and the pickling liquid inside the pickling chamber needs to be discharged. When the acid discharge pipe is opened, the pickling liquid inside the pickling chamber will be discharged outward. When the pickling liquid inside the pickling chamber is discharged outward, the pickling liquid will be filtered through the second filter plate, so that impurities falling off the stainless steel pipe in the pickling liquid will remain inside the pickling chamber, thereby improving the pickling efficiency of the stainless steel pipe surface and the pickling liquid can be reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of an energy-saving pickling tank for corrosion-resistant stainless steel pipes in this utility model. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the overall structure of an energy-saving pickling tank for corrosion-resistant stainless steel pipes in this utility model. Figure 2 ;

[0018] Figure 3 This is a schematic cross-sectional view of the overall structure of an energy-saving pickling tank for corrosion-resistant stainless steel pipes according to the utility model;

[0019] Figure 4 The utility model is a schematic cross-sectional view of the local structure of an energy-saving pickling tank for corrosion-resistant stainless steel pipes.

[0020] In the figure: 1. Pickling tank body; 101. Acid adding chamber; 102. Pickling chamber; 103. Equipment chamber; 2. First partition plate; 3. Second partition plate; 4. Acid inlet; 5. Support cross bar; 6. Stirring motor; 7. Stirring shaft; 8. First filter plate; 9. Acid discharge chamber; 10. Limiting ring; 11. Second filter plate; 12. Acid discharge pipe; 13. Driving motor; 14. First pulley; 15. Second pulley; 16. Transmission main shaft; 17. Annular support frame; 18. Telescopic hole; 19. Telescopic column; 20. Limiting cam; 21. Support spring. DETAILED DESCRIPTION

[0021] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-4 The utility model provides a technical solution for an energy-saving pickling tank for corrosion-resistant stainless steel pipes: it includes a pickling tank body 1, and a first dividing plate 2 and a second dividing plate 3 are fixedly installed on both sides of the inner wall of the pickling tank body 1, so that the pickling tank body 1 is divided into an acid adding chamber 101, a pickling chamber 102 and an equipment chamber 103 by the first dividing plate 2 and the second dividing plate 3. An acid inlet 4 is fixedly installed on the upper side of the front end of the pickling tank body 1, a supporting cross bar 5 is fixedly installed on the upper end of the acid adding chamber 101, and a stirring motor 6 is fixedly installed on the upper end of the supporting cross bar 5, and there are two stirring motors 6, which are symmetrically distributed on both sides of the upper end of the supporting cross bar 5, and the transmission shaft part of the lower end of the stirring motor 6 passes through the supporting cross bar. The rod 5 is fixedly installed with a stirring shaft 7 for stirring the inside of the acid adding chamber 101, and the lower side end of the first dividing plate 2 is penetrated and fixedly installed with a first filter screen plate 8, so that the acid adding chamber 101 and the pickling chamber 102 are filtered and connected through the first filter screen plate 8, and the lower end of the pickling chamber 102 is connected to the acid discharge chamber 9, and the number of the acid discharge chambers 9 is two, which are symmetrically distributed with the lower end of the pickling chamber 102. The lower end of the acid discharge chamber 9 is conical, and a limit ring 10 is fixedly installed on the inner wall of the middle of the acid discharge chamber 9. The upper end of the limit ring 10 is limited and fitted with a second filter screen plate 11. The bottom of the acid discharge chamber 9 is connected and fixedly installed with an acid discharge pipe 12, and a switch valve is fixedly installed on the outside of the acid discharge pipe 12;

[0023] A driving motor 13 is fixedly installed at the bottom of the equipment cavity 103, and a first pulley 14 is fixedly installed on the inner transmission shaft part of the driving motor 13. The outer end of the first pulley 14 is connected to the second pulley 15 through a belt transmission. A transmission main shaft 16 is fixedly installed in the middle of the second pulley 15, and the transmission main shaft 16 is rotatably connected to the inner wall of the pickling chamber 102 through a rotating shaft. An annular support frame 17 is fixedly installed on the outer curved surface of both ends of the transmission main shaft 16, and a telescopic hole 18 is provided on the inner side of the annular support frame 17. A telescopic hole 18 is fitted on the inner wall of the telescopic hole 18 and is movably connected to a telescopic column 19. A limiting cam 20 for clamping and limiting the two ends of the stainless steel pipe is fixedly installed on the outer end of the telescopic column 19. A supporting spring 21 is fixedly installed on the outer side of the limiting cam 20, and the end of the support spring 21 away from the limiting cam 20 is fixedly installed on the inner side of the annular support frame 17.

[0024] Working principle: When in use, the utility model pushes the limiting convex disc 20 outward. When the limiting convex disc 20 is pushed outward, it pushes the compression support spring 21 and drives the telescopic column 19 to move along the inner wall of the telescopic hole 18, so that the limiting convex disc 20 opens outward. When the limiting convex disc 20 opens outward, the two ends of the stainless steel pipe to be pickled are aligned with the limiting convex disc 20. When the two ends of the stainless steel pipe are aligned with the limiting convex disc 20, the elastic potential energy generated by the compression of the support spring 21 will drive the limiting convex disc 20 to move linearly inward in the opposite direction. When the limiting convex disc 20 moves linearly inward, it will limit and fix the two ends of the stainless steel pipe. When the two ends of the stainless steel pipe are limit and fixed, the pickling is carried out through the acid inlet 4. The pickling liquid is discharged into the acid adding chamber 101. When the pickling liquid is discharged into the acid adding chamber 101, the stirring motor 6 is turned on by control. When the stirring motor 6 is turned on, the stirring shaft 7 is driven to rotate. When the stirring shaft 7 rotates, the pickling liquid added to the acid adding chamber 101 is stirred, so that the pickling liquid can flow fully. At the same time, the pickling liquid passes through the first filter screen 8 and enters the pickling chamber 102. When the pickling liquid passes through the first filter screen 8 and enters the pickling chamber 102, the pickling liquid is filtered by the first filter screen 8 to prevent impurities in the pickling liquid from entering the pickling chamber 102. In this way, the pickling liquid can be stirred and flowed while being preliminarily filtered.

[0025] When the pickling liquid enters the pickling chamber 102, the pickling liquid will pickle the stainless steel pipe that is limited and fixed by the limiting convex disc 20. When the pickling liquid pickles the stainless steel pipe, the drive motor 13 is turned on by control. When the drive motor 13 is turned on, the first pulley 14 is driven to rotate. When the first pulley 14 rotates, the second pulley 15 is driven to rotate through the belt transmission. When the second pulley 15 rotates, it drives the transmission main shaft 16 to rotate. When the transmission main shaft 16 rotates, it drives the annular support frame 17 to rotate. When the annular support frame 17 rotates, it synchronously drives the stainless steel pipe that is limited and fixed by the limiting convex disc 20 to rotate. When the stainless steel pipe rotates, the residual attachments on the surface of the stainless steel pipe will fall off under the force generated by the rotation of the stainless steel pipe surface and the pickling liquid, thereby achieving pickling of the stainless steel pipe while the surface of the stainless steel pipe can be fully pickled, thereby improving the pickling efficiency of the stainless steel pipe surface.

[0026] At the same time, when the pickling of the stainless steel pipe is completed and the pickling liquid inside the pickling chamber 102 needs to be discharged, the acid discharge pipe 12 is opened. When the acid discharge pipe 12 is opened, the pickling liquid inside the pickling chamber 102 will be discharged outward. When the pickling liquid inside the pickling chamber 102 is discharged outward, the pickling liquid will be filtered through the second filter plate 11, so that the impurities falling off the stainless steel pipe inside the pickling liquid will remain inside the pickling chamber 102, thereby improving the pickling efficiency of the stainless steel pipe surface and the pickling liquid can be reused.

[0027] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving pickling tank for corrosion-resistant stainless steel pipes, characterized by: The invention comprises a pickling tank body (1), wherein a first partition plate (2) and a second partition plate (3) are fixedly installed on both sides of the inner wall of the pickling tank body (1), so that the pickling tank body (1) is divided into an acid adding chamber (101), a pickling chamber (102) and an equipment chamber (103) by the first partition plate (2) and the second partition plate (3); an acid inlet (4) is fixedly installed through the upper side of the front end of the pickling tank body (1); a supporting cross bar (5) is fixedly installed on the upper end of the acid adding chamber (101); a stirring motor (6) is fixedly installed on the upper end of the supporting cross bar (5); The transmission shaft portion at the lower end of the stirring motor (6) passes through the supporting cross bar (5) and is fixedly installed with a stirring shaft (7) for stirring the inside of the acid adding chamber (101); the lower side end of the first dividing plate (2) passes through and is fixedly installed with a first filter screen plate (8); the lower end of the pickling chamber (102) is connected to and fixedly installed with an acid discharge chamber (9); a limiting ring (10) is fixedly installed on the inner wall of the middle part of the acid discharge chamber (9); the upper end of the limiting ring (10) is limited and fitted with a second filter screen plate (11); the bottom of the acid discharge chamber (9) is connected to and fixedly installed with an acid discharge pipe (12); A driving motor (13) is fixedly installed at the bottom of the equipment cavity (103), a first pulley (14) is fixedly installed on the inner transmission shaft portion of the driving motor (13), the outer end of the first pulley (14) is connected to the second pulley (15) through a belt transmission, a transmission main shaft (16) is fixedly installed in the middle of the second pulley (15), an annular support frame (17) is fixedly installed on the outer curved surface of both ends of the transmission main shaft (16), a telescopic hole (18) is opened on the inner side of the annular support frame (17), a telescopic column (19) is movably connected to the inner wall of the telescopic hole (18), a limiting convex disc (20) for clamping and limiting the two ends of the stainless steel pipe is fixedly installed on the outer end of the limiting convex disc (20), and a supporting spring (21) is fixedly installed on the outer side of the limiting convex disc (20).

2. The energy-saving pickling tank for corrosion-resistant stainless steel pipes according to claim 1 is characterized by: There are two stirring motors (6), which are symmetrically distributed on both sides of the upper end of the supporting crossbar (5).

3. The energy-saving pickling tank for corrosion-resistant stainless steel pipes according to claim 2 is characterized by: There are two acid discharge chambers (9), which are symmetrically distributed at the lower end of the pickling chamber (102), and the lower end of the acid discharge chamber (9) is conical.

4. The energy-saving pickling tank for corrosion-resistant stainless steel pipes according to claim 3 is characterized by: A switch valve is fixedly installed on the outside of the acid discharge pipe (12).

5. The energy-saving pickling tank for corrosion-resistant stainless steel pipes according to claim 4 is characterized in that: The transmission main shaft (16) is rotatably connected to the inner wall of the pickling chamber (102) via a rotating shaft.

6. The energy-saving pickling tank for corrosion-resistant stainless steel pipes according to claim 5, characterized in that: The support spring (21) is fixedly mounted on the inner side of the annular support frame (17) at one end away from the limiting convex disc (20).

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