Steel pipe pickling tank

Abstract

The utility model discloses a steel pipe pickling bath which comprises a pickling device, a pickling bath body is arranged in the pickling device, a steel pipe storage box is arranged at the top of one side of the pickling device, the bottom end of the steel pipe storage box is connected with a discharging port towards the interior of the pickling bath body, and a roller is arranged in the pickling bath body. The inner wall faces of the two ends of the roller are provided with shaft seats through a plurality of supporting rods, the shaft seats are installed on the inner side wall face of the pickling tank, a plurality of pipe grooves are formed in the outer side wall faces of the two ends of the roller, a support is fixedly installed on one side wall face of the steel pipe storage box, and a baffle is connected to the position, facing the baffle groove, of the support. When the device is used, the steel pipes are subjected to acid pickling one by one in the rotating process of the roller, insufficient acid pickling of the contact parts of the steel pipes bound together is prevented, the steel pipes subjected to acid pickling are stirred by the baffle to be discharged, the automation degree is high, contact between workers and acid liquor is reduced, and accidents are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe processing, in particular to a steel pipe pickling tank. Background Art

[0002] Seamless steel pipes need to go through a pickling process before the initial cold drawing to remove the oxide scale on the inner and outer walls of the rough pipe formed after perforation. These oxide scales need to be completely removed so that the subsequent phosphating and saponification can have better effects and provide better lubrication during the cold drawing process to avoid scratches on the inner and outer walls of the seamless steel pipe after cold drawing. There are usually two types of pickling solutions for pickling: 1. Sulfuric acid is diluted to a concentration of about 20%, heated to between 60 and 65 degrees, and generally cleaned for 20-30 minutes; hydrochloric acid: also diluted to a concentration of about 20%, directly pickled at room temperature, generally washed for 20 to 30 minutes.

[0003] At present, steel pipe manufacturers use slings to bundle several steel pipes, put the bundled steel pipes into the pickling tank to soak for a period of time and then lift them up to complete the pickling work. However, the parts of the bundled steel pipes that are in contact with each other cannot come into contact with the pickling liquid, resulting in insufficient pickling. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a steel pipe pickling tank, which solves the technical problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a steel pipe pickling tank, comprising a pickling device, a pickling tank is provided inside the pickling device, a steel pipe storage box is provided on the top of one side of the pickling device, the bottom end of the steel pipe storage box is connected to a feeding port in the pickling tank, a roller is provided in the pickling tank, a plurality of support rods are used to install shaft seats on the inner wall surfaces of both ends of the roller, the shaft seat is installed on the inner wall surface of the pickling tank, one end of the shaft seat passes through the wall surface of the pickling device and is connected to a driving motor, a plurality of pipe grooves are provided on the outer wall surfaces of both ends of the roller, a baffle groove is provided on the central outer wall surface of the roller, a bracket is fixedly installed on one side wall surface of the steel pipe storage box, the bracket is connected to a baffle at the baffle groove, a feeding port is provided on the top of the pickling tank at the baffle, and an acid discharge pipe is connected to the bottom end of the pickling tank.

[0006] Preferably, the bottom wall surface of the steel pipe storage box is an inclined structure inclined toward the discharge port.

[0007] Preferably, the width of the feed opening is greater than one times the outer diameter of the steel pipe and less than two times the outer diameter of the steel pipe.

[0008] Preferably, the diameter of the pipe groove is equal to the diameter of the steel pipe.

[0009] Preferably, the distance between the inner wall surface of the pickling tank and the outer wall surface of the baffle tank is equal to the width of the feed opening.

[0010] Preferably, the outer wall surface of the baffle groove is flush with the bottom end of the tube groove.

[0011] Preferably, the drum is provided with a plurality of through holes.

[0012] Beneficial Effects

[0013] The utility model provides a steel pipe pickling tank, which has the following beneficial effects: when the device is in use, the steel pipes are placed in a steel pipe storage box, and enter into the pipe groove on the drum under the action of gravity. The drum pickles the steel pipes one by one during rotation to prevent insufficient pickling of contact parts of the bundled steel pipes. The pickled steel pipes are discharged under the toggle of the baffle plate. The degree of automation is high, which reduces the contact between workers and acid and reduces the occurrence of accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a first structural schematic diagram of a steel pipe pickling tank described in the utility model.

[0015] Figure 2 This is a second structural schematic diagram of a steel pipe pickling tank described in the utility model.

[0016] Figure 3 The utility model is a schematic diagram of the drum structure of a steel pipe pickling tank.

[0017] In the figure: 1. pickling device; 2. steel pipe storage box; 3. bracket; 4. baffle; 5. discharge port; 6. roller; 7. pipe groove; 8. shaft seat; 9. support rod; 10. discharge port; 11. baffle groove; 12. acid discharge pipeline; 13. pickling tank. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-3The utility model provides a technical solution for a steel pipe pickling tank: a steel pipe pickling tank, comprising a pickling device 1, a pickling tank 13 is provided inside the pickling device 1, a steel pipe storage box 2 is provided on the top of one side of the pickling device 1, a feeding port 5 is connected to the bottom end of the steel pipe storage box 2 in the pickling tank 13, a roller 6 is provided in the pickling tank 13, a plurality of support rods 9 are used to install shaft seats 8 on the inner wall surfaces at both ends of the roller 6, the shaft seats 8 are installed on the inner wall surface of the pickling tank 13, one end of the shaft seat 8 passes through the wall surface of the pickling device 1 and is connected to a driving motor, a plurality of pipe grooves 7 are provided on the outer wall surfaces at both ends of the roller 6, a baffle groove 11 is provided on the central outer wall surface of the roller 6, a bracket 3 is fixedly installed on one side wall surface of the steel pipe storage box 2, a baffle 4 is connected to the baffle groove 11 by the bracket 3, a discharging port 10 is provided on the top of the pickling tank 13 at the baffle 4, and an acid discharge pipeline 12 is connected to the bottom end of the pickling tank 13.

[0020] In this embodiment, specifically, the bottom wall surface of the steel pipe storage box 2 is an inclined surface structure inclined toward the lower material opening 5 .

[0021] In this embodiment, specifically, the width of the feed opening 5 is greater than one times the outer diameter of the steel pipe and less than two times the outer diameter of the steel pipe.

[0022] In this embodiment, specifically, the diameter of the pipe groove 7 is equal to the diameter of the steel pipe.

[0023] In this embodiment, specifically, the distance between the inner wall surface of the pickling tank 13 and the outer wall surface of the baffle tank 11 is equal to the width of the feed opening 5 .

[0024] In this embodiment, specifically, the outer wall surface of the baffle groove 11 is flush with the bottom end of the tube groove 7 .

[0025] In this embodiment, specifically, a plurality of through holes are formed on the drum 6 .

[0026] Embodiment: When the device is in use, pickling acid is injected into the pickling tank 13, wherein the liquid level of the acid shall not be higher than the top of the shaft seat 8.

[0027] The steel pipes are placed in the steel pipe storage box 2. The steel pipes in the steel pipe storage box 2 move toward the lower material port 5 under the action of gravity. At the same time, because the bottom wall of the steel pipe storage box 2 is an inclined structure inclined toward the lower material port 5, it is convenient to unload the steel pipes and prevent the steel pipes from piling up.

[0028] The driving motor drives the shaft seat 8 to drive the roller 6 to rotate. When the steel pipe at the bottom of the feeding port 5 enters the pipe groove 7, it will rotate downward with the pipe groove 7, and the next steel pipe is waiting to enter the next pipe groove 7.

[0029] The steel pipe driven by the pipe groove 7 rotates downward and is immersed in the acid solution for pickling. As the roller 6 rotates, it moves toward the discharge port 10. At this time, the steel pipe is limited between the pipe groove 7 and the inner wall of the pickling tank 13.

[0030] After the steel pipe is turned out of the acid liquid, it first contacts the side wall of the baffle 4 at the discharge port 10. The drum 6 continues to rotate, and the steel pipe in the pipe groove 7 is pushed out of the pipe groove 7 by the baffle 4, and rolls down to the right side from the discharge port 10 under the action of gravity to complete the unloading.

[0031] It should be noted that, in this document, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, but do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. A steel pipe pickling tank, comprising a pickling device (1), characterized in that: A pickling tank (13) is provided inside the pickling device (1), a steel pipe storage box (2) is provided on the top of one side of the pickling device (1), a feed port (5) is connected to the bottom of the steel pipe storage box (2) to the pickling tank (13), a roller (6) is provided in the pickling tank (13), a shaft seat (8) is installed on the inner wall surface of both ends of the roller (6) by using a plurality of support rods (9), the shaft seat (8) is installed on the inner wall surface of the pickling tank (13), one end of the shaft seat (8) passes through the pickling tank The wall of the device (1) is connected to a driving motor, the outer wall surfaces at both ends of the drum (6) are provided with a plurality of pipe grooves (7), the central outer wall surface of the drum (6) is provided with a baffle groove (11), a bracket (3) is fixedly installed on one side wall of the steel pipe storage box (2), the bracket (3) is connected to the baffle groove (11) with a baffle (4), the top end of the pickling tank (13) at the baffle (4) is provided with a discharge port (10), and the bottom end of the pickling tank (13) is connected to an acid discharge pipeline (12).

2. A steel pipe pickling tank according to claim 1, characterized in that: The bottom wall surface of the steel pipe storage box (2) is an inclined surface structure inclined toward the discharge port (5).

3. A steel pipe pickling tank according to claim 1, characterized in that: The width of the feed opening (5) is greater than one times the outer diameter of the steel pipe and less than two times the outer diameter of the steel pipe.

4. A steel pipe pickling tank according to claim 1, characterized in that: The diameter of the pipe groove (7) is equal to the diameter of the steel pipe.

5. A steel pipe pickling tank according to claim 1, characterized in that: The distance between the inner wall surface of the pickling tank (13) and the outer wall surface of the baffle tank (11) is equal to the width of the feed opening (5).

6. A steel pipe pickling tank according to claim 1, characterized in that: The outer wall surface of the baffle groove (11) is flush with the bottom end of the tube groove (7).

7. A steel pipe pickling tank according to claim 1, characterized in that: The roller (6) is provided with a plurality of through holes.

Images