Circulating system of blank pickling device

Abstract

The utility model discloses a circulating system of a blank pickling device, which relates to the technical field of steel pipe blank pickling and comprises a box body and a pump assembly used for pumping a pickling solution at the bottom end of the box body into the top end of the box body to participate in circulation. The pickling assemblies are arranged in the box body from top to bottom, each pickling assembly comprises a partition plate and an overflow weir arranged at one end of the partition plate, and a placing table top for placing blanks is formed at the upper end of each partition plate. Due to the fact that the overflow weir is arranged at one end of each partition plate, pickling liquid is accumulated at the upper ends of the partition plates to form a certain height, it is guaranteed that the pickling liquid submerges steel pipe blanks, and when the pickling liquid exceeds the overflow weir in height, the pickling liquid flows to the next partition plate through the liquid falling space; the pickling solution is filtered before entering the next partition plate, so that the pickling effect is prevented from being influenced by excessive impurities in the pickling solution, and the pickling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe blank pickling, in particular to a circulation system of a blank pickling device. Background Art

[0002] Steel pipe is a hollow long steel strip, which is widely used as a pipeline for conveying fluids and is also used to manufacture mechanical parts and engineering structures. The newly produced billets need to be pickled. The main purpose of pickling steel pipes is to remove impurities such as iron oxide, rust, oil stains, etc. on the surface to improve the corrosion resistance and surface quality of the steel pipes.

[0003] At present, when pickling steel pipe billets, the steel pipe pickling device immerses the billets in acid solution so that the surface of the steel pipe can be fully pickled. However, after long-term use of the acid solution, impurities in the acid solution will accumulate more and more, resulting in a decrease in the pickling effect. A second pickling may be required, which reduces the processing efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a circulation system for a billet pickling device to solve the technical problem raised in the above background technology that after the steel pipe billet pickling device on the market has been used for a period of time, impurities in the acid solution will accumulate more and more, resulting in a decrease in the pickling effect.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a circulation system of a blank pickling device, comprising:

[0006] A box body and a pump assembly for pumping the pickling liquid at the bottom end of the box body into the top end of the box body for circulation;

[0007] A plurality of pickling assemblies are arranged in the box from top to bottom, and the pickling assemblies include:

[0008] A partition and an overflow weir provided at one end of the partition, wherein the upper end of the partition forms a placement table for placing the blanks, and the overflow weir forms a downcomer space between the side thereof away from the partition and the inner wall of the box, so that when the pickling liquid accumulates above the partition and exceeds the overflow weir, it flows through the downcomer space into the partition of the next pickling assembly;

[0009] A filter assembly is provided in the downcomer space for filtering impurities in the pickling liquid.

[0010] As a preferred technical solution of the present invention, the filter assembly includes a sieve plate with sieve holes, and the sieve holes of the sieve plates of the filter assemblies have apertures that decrease in order from top to bottom.

[0011] As a preferred technical solution of the present invention, the overflow weir is provided with a first position-limiting support plate on a side thereof away from the partition plate, and the first position-limiting support plate is used to support the screen plate.

[0012] As a preferred technical solution of the present invention, the circulation system further includes: a movable plate provided with a protrusion, and a driving assembly for driving the movable plate to move along the sieve plate, thereby sweeping impurities on the sieve plate away from the sieve plate.

[0013] As a preferred technical solution of the present utility model, the drive assembly includes:

[0014] a motor disposed outside the box;

[0015] One end of the screw rod is connected to the output shaft of the motor, and the other end of the screw rod extends into the box body and matches with the screw rod groove opened on the surface of the movable plate.

[0016] As a preferred technical solution of the present invention, the driving assembly further comprises: a guide rod having one end connected to the inner wall of the box, and the guide rod slidingly cooperates with a guide groove provided on the surface of the movable plate.

[0017] As an optimal technical solution of the present invention, the box body is provided with a front groove near the sieve plate, the front groove is used for discharging impurities from the sieve plate, and the surface of the box body is provided with a positive sealing cover for sealing the front groove.

[0018] As an optimal technical solution of the present invention, a second limiting support plate is provided at one end of the overflow weir, a discharge plate is provided at the upper end of the second limiting support plate, and a discharge trough for placing steel pipe billets is provided on the surface of the discharge plate.

[0019] As a preferred technical solution of the present invention, a side groove for the material discharge plate to extend out is provided on the side of the box body, and a side sealing cover for sealing the side groove is provided on the side of the box body.

[0020] As a preferred technical solution of the present utility model, the pump assembly includes:

[0021] a pump body disposed outside the box;

[0022] A suction pipe with one end connected to the pump body, and the other end of the suction pipe extending into the bottom end of the box body;

[0023] an ejection pipe connected to the pump body at one end, the ejection pipe extending into the top end of the box body;

[0024] A spray head is connected to the other end of the spray pipe.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] The utility model provides an overflow weir at one end of the partition, so that the pickling liquid accumulates at the upper end of the partition to form a certain height, ensuring that the height of the pickling liquid does not exceed the steel pipe blank. When the height of the pickling liquid exceeds the height of the overflow weir, the pickling liquid flows into the next partition through the downcomer space. Since a filtering component is provided in the downcomer space, the pickling liquid is filtered before entering the next partition, thereby preventing excessive impurities in the pickling liquid from affecting its pickling effect, reducing the frequency of adding pickling liquid, and improving the pickling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the external three-dimensional structure of the utility model;

[0028] Figure 2 This is a schematic diagram of the main cross-sectional structure of the box body of the present utility model;

[0029] Figure 3 This is a schematic diagram of the partially cutaway three-dimensional structure of the box body of the present invention;

[0030] Figure 4 This is a schematic diagram of the three-dimensional structure of the screen plate, movable plate and screw rod of the utility model;

[0031] Figure 5 It is a schematic diagram of the three-dimensional structure of the partition, overflow weir and discharge plate of the utility model.

[0032] In the figure: 1. Box body; 2. Side groove; 3. Side sealing cover; 4. Partition; 5. Overflow weir; 6. First limit support plate; 7. Sieve plate; 8. Second limit support plate; 9. Discharge plate; 10. Discharge trough; 11. Pump body; 12. Suction pipe; 13. Spray pipe; 14. Sprinkler head; 15. Movable plate; 16. Protrusion; 17. Motor; 18. Screw; 19. Screw groove; 20. Guide rod; 21. Guide groove; 22. Positive sealing cover; 23. Drain port; 24. Solenoid valve. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] See also Figure 1-5 The utility model provides a technical solution: a circulation system of a blank pickling device, comprising:

[0035] A tank body 1 and a pump assembly for pumping the pickling liquid at the bottom end of the tank body 1 into the top end of the tank body 1 for circulation;

[0036] A plurality of pickling assemblies are arranged from top to bottom in the box 1, and the pickling assemblies include:

[0037] The partition 4 and the overflow weir 5 provided at one end of the partition 4 form a placement table for the blanks at the upper end of the partition 4. The overflow weir 5 forms a liquid-falling space between the side thereof away from the partition 4 and the inner wall of the box body 1. When the pickling liquid accumulates above the partition 4 and exceeds the overflow weir 5, it flows through the liquid-falling space into the partition 4 of the next pickling assembly;

[0038] A filter assembly provided in the downcomer space for filtering impurities in the pickling liquid;

[0039] The above technical solution can filter impurities in the pickling liquid simultaneously when pickling the steel pipe billet. When in use, the steel pipe billet to be pickled is placed on the upper end of the partition 4, and the pickling liquid at the bottom of the box body 1 is pumped into the top of the box body 1 through the pump assembly. Due to the overflow weir 5, the pickling liquid does not flow through the partition 4 quickly, and then accumulates at the upper end of the partition 4 to form a certain height, ensuring that the height of the pickling liquid is above the steel pipe billet, so that the steel pipe billet is soaked and impurities such as iron oxide, rust layer, oil stains, etc. on its surface are removed. As the height of the pickling liquid continues to increase, the height eventually exceeds the height of the overflow weir 5, and the pickling liquid flows into the next partition 4 through the downcomer space. Since a filtering assembly is provided in the downcomer space, the pickling liquid is filtered before entering the next partition 4, thereby preventing excessive impurities in the pickling liquid from affecting its pickling effect, thereby improving the service life of the pickling liquid, minimizing the frequency of adding pickling liquid, and improving the pickling efficiency.

[0040] like Figure 2 As shown, in this embodiment, the filter assembly includes a sieve plate 7 with sieve holes, and the sieve holes of the sieve plates 7 of the multiple filter assemblies have apertures that decrease in size from top to bottom.

[0041] The above technical solution can achieve graded filtration of the pickling liquid. In this embodiment, four pickling components are provided, and correspondingly, four sieve plates 7 are also provided. When the pickling liquid passes through these four sieve plates 7 from top to bottom, the impurities in the pickling liquid can be minimized and the decline rate of the pickling effect of the pickling liquid can be slowed down.

[0042] like Figure 2 and Figure 3 As shown, in this embodiment, the overflow weir 5 is provided with a first position-limiting support plate 6 on a side thereof away from the partition plate 4, and the first position-limiting support plate 6 is used to support the screen plate 7;

[0043] The above technical solution can conveniently arrange the supporting sieve plate 7 in the downcomer space, so that the pickling liquid can be filtered through the sieve plate 7 multiple times during the circulation process.

[0044] like Figure 3 and Figure 4As shown, in this embodiment, the circulation system further includes: a movable plate 15 provided with a protrusion 16, and a drive assembly for driving the movable plate 15 to move along the sieve plate 7, thereby sweeping impurities on the sieve plate 7 away from the sieve plate 7; specifically, the drive assembly includes: a motor 17 provided on the outside of the box body 1; a screw rod 18 connected to the output shaft of the motor 17 at one end, the other end of the screw rod 18 extending into the box body 1 and cooperating with a screw rod groove 19 provided on the surface of the movable plate 15; the drive assembly further includes: a guide rod 20 connected to the inner wall of the box body 1 at one end, the guide rod 20 slidingly cooperating with a guide groove 21 provided on the surface of the movable plate 15;

[0045] like Figure 1 As shown, in this embodiment, the box body 1 is provided with a front groove at a position close to the sieve plate 7, and the front groove is used to discharge impurities from the sieve plate 7. A positive sealing cover 22 is provided on the surface of the box body 1 for sealing the front groove.

[0046] The above technical solution can remove impurities accumulated on the sieve plate 7. When cleaning is needed, stop using the device first and ensure that the pickling liquid is all at the bottom of the box body 1 to prevent strong acid from leaking. Open the positive sealing cover 22 to ensure that the front groove is open, start the motor 17 to drive the screw rod 18 to rotate, and the screw rod 18 cooperates with the screw rod groove 19 to drive the movable plate 15 to slide along the surface of the sieve plate 7, thereby driving the protrusion 16 at the bottom end of the movable plate 15 to clean the surface of the sieve plate 7. The impurities on the surface of the sieve plate 7 leave the box body 1 through the front groove. After cleaning, close the positive sealing cover 22 again. Since a guide rod 20 is provided, the guide rod 20 can cooperate with the guide groove 21 on the surface of the movable plate 15 to slide, thereby limiting the movement direction of the movable plate 15 to prevent it from shaking and improving the stability of the structure. It should be noted that in order to ensure that the sealing performance of the positive sealing cover 22 is good, a sealing ring is provided on one side of the positive sealing cover 22, and the material of the sealing ring is selected to be made of a material that can resist strong acid, such as fluororubber.

[0047] like Figure 3 and Figure 5 As shown, in this embodiment, a second limiting support plate 8 is provided at one end of the overflow weir 5, a discharge plate 9 is provided at the upper end of the second limiting support plate 8, and a discharge trough 10 for placing steel pipe billets is provided on the surface of the discharge plate 9; a side groove 2 for the discharge plate 9 to extend is provided on the side of the box body 1, and a side sealing cover 3 for sealing the side groove 2 is provided on the side of the box body 1;

[0048] The above technical solution can facilitate the placement of steel pipe billets. When in use, the steel pipe billets that need to be pickled are placed into the discharge trough 10 on the surface of the discharge plate 9, the side groove 2 is opened to send the discharge plate 9 into the box body 1, and ensure that the discharge plate 9 is located above the second limiting support plate 8. Close the side sealing cover 3 to block the side groove 2 to complete the loading.

[0049] like Figure 1 and Figure 3 As shown, in this embodiment, the pump assembly includes: a pump body 11 provided outside the box body 1; an intake pipe 12 connected to the pump body 11 at one end, and the other end of the intake pipe 12 extends into the bottom end of the box body 1; an outlet pipe 13 connected to the pump body 11 at one end, and the outlet pipe 13 extends into the top end of the box body 1; a spray head 14 connected to the other end of the outlet pipe 13;

[0050] The above technical solution can realize the circulation of the pickling liquid in the box body 1. When working, the pump body 11 draws the pickling liquid at the bottom of the box body 1 through the suction pipe 12, and then squeezes the pickling liquid into the spray head 14 through the spray pipe 13. The pickling liquid is sprayed onto the surface of the steel pipe billet through the spray head 14 to achieve water washing of the steel pipe billet.

[0051] like Figure 5 As shown, in this embodiment, a drain port 23 for discharging the pickling liquid is provided at the upper end of the partition plate 4, and a solenoid valve 24 is provided at the drain port 23;

[0052] The above technical solution can conveniently discharge the pickling liquid at the upper end of the partition 4 to the bottom end of the box body 1. When in use, the solenoid valve 24 is opened, and the pickling liquid is discharged downward through the drain port 23 at the upper end of the partition 4. Finally, all the pickling liquid gathers at the bottom end of the box body 1 to prevent the pickling liquid from leaking when the side sealing cover 3 or the front sealing cover 22 is opened.

[0053] Working principle: when in use, first put the steel pipe billet that needs to be pickled into the discharge trough 10 on the surface of the discharge plate 9, open the side groove 2 and send the discharge plate 9 into the box body 1, ensure that the discharge plate 9 is located above the second limit support plate 8, close the side sealing cover 3 to block the side groove 2, and complete the loading. When the pump body 11 is working, the pickling liquid at the bottom of the box body 1 is drawn in through the suction pipe 12, and then the pickling liquid is squeezed into the spray head 14 through the spray pipe 13. The pickling liquid is sprayed onto the surface of the steel pipe billet through the spray head 14 to achieve water washing of the steel pipe billet. Due to the overflow weir 5, the pickling liquid does not flow through the partition 4 quickly, and then accumulates at the upper end of the partition 4 to form a certain height, ensuring that the height of the pickling liquid is above the steel pipe billet, so that the steel pipe billet is soaked, and impurities such as iron oxide, rust, oil stains, etc. on its surface are removed. As the height of the pickling liquid It keeps increasing, and finally the height exceeds the height of the overflow weir 5. The pickling liquid flows into the next partition 4 through the downcomer space. Since a sieve plate 7 is provided in the downcomer space, the pickling liquid is filtered before entering the next partition 4, thereby preventing excessive impurities in the pickling liquid from affecting its pickling effect. When there are many impurities accumulated on the surface of the sieve plate 7, the solenoid valve 24 is opened, and the pickling liquid is discharged downward through the drain port 23 at the upper end of the partition 4. Finally, all the pickling liquid gathers at the bottom end of the box body 1, and then the positive sealing cover 22 is opened, and the motor 17 is started to drive the screw rod 18 to rotate. The screw rod 18 cooperates with the screw rod groove 19 to drive the movable plate 15 to slide along the surface of the sieve plate 7, thereby driving the protrusion 16 at the bottom end of the movable plate 15 to clean the surface of the sieve plate 7. The impurities on the surface of the sieve plate 7 leave the box body 1 through the front groove. After cleaning, the positive sealing cover 22 is closed again.

[0054] Thereby completing a series of tasks, the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0055] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A circulation system for a blank pickling device, comprising: A box body (1) and a pump assembly for pumping the pickling liquid at the bottom end of the box body (1) into the top end of the box body (1) for circulation; Characterized in that the circulation system further comprises: a plurality of pickling components arranged from top to bottom in the box (1), the pickling components comprising: A partition (4) and an overflow weir (5) provided at one end of the partition (4), wherein the upper end of the partition (4) forms a placement table for placing the blanks, and the overflow weir (5) forms a liquid drop space between the side thereof away from the partition (4) and the inner wall of the box body (1), so that when the pickling liquid accumulates above the partition (4) and exceeds the overflow weir (5), the pickling liquid flows through the liquid drop space into the partition (4) of the next pickling assembly; A filter assembly is provided in the downcomer space for filtering impurities in the pickling liquid.

2. The circulation system of the blank pickling device according to claim 1 is characterized in that: The filter assembly comprises a sieve plate (7) with sieve holes, and the sieve holes of the sieve plates (7) of the filter assembly have apertures that decrease in size from top to bottom.

3. The circulation system of the blank pickling device according to claim 2, characterized in that: The overflow weir (5) is provided with a first position-limiting support plate (6) on a side thereof away from the partition plate (4), and the first position-limiting support plate (6) is used to support the screen plate (7).

4. The circulation system of the blank pickling device according to claim 1 is characterized in that: The circulation system further comprises: a movable plate (15) provided with a protrusion (16), and a driving assembly for driving the movable plate (15) to move along the sieve plate (7), thereby sweeping impurities on the sieve plate (7) away from the sieve plate (7).

5. The circulation system of the blank pickling device according to claim 4 is characterized in that: The drive assembly includes: a motor (17) disposed outside the housing (1); A screw rod (18) has one end connected to the output shaft of the motor (17), and the other end of the screw rod (18) extends into the box (1) and matches with a screw rod groove (19) provided on the surface of the movable plate (15).

6. The circulation system of the blank pickling device according to claim 5 is characterized in that: The driving assembly further comprises: a guide rod (20) with one end connected to the inner wall of the box (1); the guide rod (20) is slidably engaged with a guide groove (21) provided on the surface of the movable plate (15).

7. The circulation system of the blank pickling device according to claim 4 is characterized in that: The box body (1) is provided with a front groove at a position close to the sieve plate (7), and the front groove is used for allowing impurities to be discharged from the sieve plate (7). A positive sealing cover (22) is provided on the surface of the box body (1) for sealing the front groove.

8. The circulation system of the blank pickling device according to claim 1 is characterized in that: A second limiting support plate (8) is provided at one end of the overflow weir (5), a discharge plate (9) is provided at the upper end of the second limiting support plate (8), and a discharge trough (10) for placing steel pipe blanks is provided on the surface of the discharge plate (9).

9. The circulation system of the blank pickling device according to claim 8, characterized in that: The side of the box body (1) is provided with a side groove (2) for the material feeding plate (9) to extend out, and the side of the box body (1) is provided with a side sealing cover (3) for sealing the side groove (2).

10. The circulation system of the blank pickling device according to claim 1, characterized in that: The pump assembly comprises: a pump body (11) disposed outside the box body (1); A suction pipe (12) connected to the pump body (11) at one end, the other end of the suction pipe (12) extending into the bottom end of the box body (1); a discharge pipe (13) connected to the pump body (11) at one end, the discharge pipe (13) extending into the top end of the box body (1); A spray head (14) is connected to the other end of the spray pipe (13).

Images