Automatic passivation device for thin-wall carbon steel welded pipe production line

Abstract

The utility model belongs to the technical field of passivation boxes, and particularly relates to an automatic passivation device for a thin-wall carbon steel welded pipe production line, which comprises a passivation solution collecting and supplying mechanism, a box body and a partition plate arranged in the box body, and the partition plate divides the interior of the box body into two regions, namely a spraying region and a collecting region; a prepared passivation solution is put into a passivation solution collecting and supplying mechanism, a passivation pump is used for pumping the solution into a spraying mechanism, a spraying head is adjusted to a proper position, the passivation solution is evenly sprayed to a steel pipe in operation of a welded pipe line, and the steel pipe is purged through a front air ring before entering a spraying chamber; and two air rings are used for purging the passivation solution on the surface when the passivation solution is discharged from the spraying chamber, so that excessive passivation solution is prevented from flowing onto the ground along with the steel pipe, and the redundant passivation solution in the spraying chamber flows into a passivation solution collecting mechanism along a drainage plate and a circulating hole at the bottom to be filtered and then enters the next circulation.

Description

Technical Field

[0001] The utility model belongs to the technical field of passivation boxes, and in particular relates to an automatic passivation device for a thin-wall carbon steel welded pipe production line. Background Art

[0002] The blanks used for welded steel pipes are steel plates or strips. Due to different welding processes, they are divided into furnace welded pipes, electric welded (resistance welded) pipes and automatic arc welded pipes. Due to different welding forms, they are divided into straight seam welded pipes and spiral welded pipes. Due to the shape of the ends, they are divided into round welded pipes and special-shaped (square, flat, etc.) welded pipes.

[0003] However, when the thin-walled carbon steel pipe production line produces the precision press-connected base pipe for gas, it needs to be passivated, and there is no good method for handling passivation in the prior art;

[0004] In order to solve the above problems, the present application proposes an automatic passivation device for a thin-walled carbon steel welded pipe production line. Utility Model Content

[0005] To solve the problems raised in the above background technology, the utility model provides an automatic passivation device for a thin-walled carbon steel welded pipe production line. By setting up the system, the passivation effect is ensured when the welded pipe line produces gas by precise compression connection of the base pipe, and the product appearance quality is ensured.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic passivation device for a thin-walled carbon steel welded pipe production line, comprising a passivation liquid collecting and supplying mechanism, a box body and a partition installed inside the box body, wherein the partition divides the inside of the box body into two sections, namely a spraying area and a collecting area;

[0007] It also includes a spray pipe, which passes through the surface of the box and extends into the spray area. A plurality of spray heads are installed at one end of the spray pipe close to the spray area, and one end of the spray pipe away from the box is connected to the passivation liquid collection and supply mechanism;

[0008] A connecting pipe is provided at the bottom of the box, and the connecting pipe has three pipes, one of which is connected to an external air pump through an air inlet pipe, and the other two pipes are respectively connected to air rings A. The two air rings A are symmetrically arranged on the left and right sides of the box, and connecting plates are provided on both sides of each air ring A, and are connected to the surface of the box through the connecting plates.

[0009] As a preferred embodiment of the automatic passivation device for a thin-walled carbon steel welded pipe production line of the utility model, two cover plates are hingedly connected to the surface of the box body, and the two cover plates seal the spraying area and the collecting area respectively.

[0010] As a preferred embodiment of the automatic passivation device for a thin-walled carbon steel welded pipe production line of the utility model, two inclined guide plates are installed inside the box, and the two guide plates are respectively located in the spraying area and the collecting area.

[0011] As a preferred embodiment of the automatic passivation device for a thin-walled carbon steel welded pipe production line of the utility model, through holes for moving the steel pipes are provided on the surfaces of the box body and the partition.

[0012] As a preferred embodiment of the automatic passivation device for a thin-walled carbon steel welded pipe production line of the utility model, pressure detectors and valves are installed on the two pipelines connecting the connecting pipe to the air ring A.

[0013] As a preferred embodiment of the automatic passivation device for a thin-walled carbon steel welded pipe production line of the utility model, an air ring B is provided on one side of the air ring A close to the spraying area, the air ring B is connected to the connecting plate, and the air ring B and the air ring A are connected through an air ring connecting pipe.

[0014] As a preferred embodiment of the automatic passivation device for a thin-walled carbon steel welded pipe production line of the utility model, a flow hole is provided at the bottom of the partition, and the inner side of the bottom surface of the box body is inclined, and the liquid in the spraying area flows to the collection area through the flow hole.

[0015] As a preferred embodiment of the utility model, an automatic passivation device for a thin-walled carbon steel welded pipe production line further includes a connecting pipe, which passes through the surface of the box body and extends into the collection area. The end of the connecting pipe away from the box body is connected to a pump body, and the liquid outlet end of the pump body is connected to the passivation liquid collection and supply mechanism.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the prepared passivation liquid is placed in the passivation liquid collecting and supplying mechanism, the liquid is pumped into the spraying mechanism by a passivation pump, the spray head is adjusted to a suitable position, and the passivation liquid is evenly sprayed onto the steel pipes in operation in the welding line, the steel pipes are purged by the air ring in front before entering the spray room, and two air rings are used to purge the passivation liquid on the surface when leaving the spray room to prevent excessive passivation liquid from flowing to the ground with the steel pipes, and the excess passivation liquid in the spray room flows along the drainage plate and flow holes at the bottom to the passivation liquid collecting mechanism for filtration, and then enters the next cycle. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the top view structure of the utility model;

[0020] Figure 3 It is an isometric structural schematic diagram of the utility model;

[0021] Figure 4 It is a side view structural schematic diagram of the utility model;

[0022] Figure 5 It is a left-side structural schematic diagram of the utility model;

[0023] In the figure:

[0024] 10. Box body; 11. Drainage plate; 12. Partition plate; 13. Sprinkler pipe; 14. Sprinkler head; 15. Cover plate; 16. Air inlet pipe; 17. Connecting pipe;

[0025] 20. Connecting pipe; 21. Pressure detector; 22. Valve; 23. Air ring A; 231. Air ring B; 24. Air ring connecting pipe; 25. Connecting plate. DETAILED DESCRIPTION

[0026] 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 described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0027] Example 1

[0028] like Figures 1 to 5 As shown;

[0029] A thin-walled welded pipeline passivation box device includes a passivation liquid collection and supply mechanism, a box body 10, and a partition 12 installed inside the box body 10. The partition 12 divides the inside of the box body 10 into two areas, namely a spraying area and a collection area.

[0030] It also includes a spray pipe 13, which penetrates the surface of the box 10 and extends into the spray area. A plurality of spray heads 14 are installed at one end of the spray pipe 13 close to the spray area, and one end of the spray pipe 13 away from the box 10 is connected to the passivation liquid collection and supply mechanism;

[0031] A connecting pipe 20 is provided under the box body 10, and the connecting pipe 20 has three pipes, one of which is connected to an external air pump through an air inlet pipe 16, and the other two pipes are respectively connected to air rings A23. The two air rings A23 are symmetrically arranged on the left and right sides of the box body 10. Connecting plates 25 are provided on both sides of each air ring A23, and are connected to the surface of the box body 10 through the connecting plates 25.

[0032] It should be noted that two cover plates 15 are hinged on the surface of the box body 10, and the two cover plates 15 seal the spraying area and the collecting area respectively.

[0033] It should be noted that the passivation liquid collection and supply mechanism is composed of an isolation net (i.e., a filter net) and a supply pump.

[0034] It should be noted that two inclined guide plates 11 are installed inside the box 10 , and the two guide plates 11 are respectively located in the spraying area and the collecting area.

[0035] In this embodiment: a partition 12 is placed in the box body 10, and the box body 10 is separated by the partition 12. When the steel pipe enters the spraying area from the box body 10, an air ring A23 is set before and after the spraying area to blow away the water stains on the surface of the steel pipe before passivation to avoid dilution of the passivation liquid. After passivation, an air ring A23 is set to blow away the surface of the steel pipe to avoid excess passivation liquid on the surface of the steel pipe flowing to the ground. Because two inclined drainage plates 11 are installed inside the box body 10, the two drainage plates 11 are respectively located in the spraying area and the collection area to avoid excess passivation liquid from remaining in the chamber.

[0036] More specifically:

[0037] In order to facilitate the movement of the steel pipe, in an optional embodiment, through holes for moving the steel pipe are opened on the surfaces of the box body 10 and the partition plate 12.

[0038] Going further:

[0039] In order to facilitate the user to control the air volume of the air ring A23, in an optional embodiment, a pressure detector 21 and a valve 22 are installed on the two pipes of the connecting pipe 20 connecting the air ring A23.

[0040] In an optional embodiment, an air ring B231 is provided on one side of the spraying area air ring A23 , the air ring B231 is connected to the connecting plate 25 , and the air ring B231 and the air ring A23 are connected via an air ring connecting pipe 24 .

[0041] In this embodiment: the air ring B231 and the air ring A23 are connected by the air ring connecting pipe 24, so that the user can blow away the water stains on the surface of the steel pipe before passivation.

[0042] Going further:

[0043] In an optional embodiment, a flow hole is opened at the bottom of the partition 12, and the inner side of the bottom surface of the box body 10 is inclined, so that the liquid in the spraying area flows to the collection area through the flow hole.

[0044] In an optional embodiment, a connecting pipe 17 is further included. The connecting pipe 17 passes through the surface of the box body 10 and extends into the collection area. The end of the connecting pipe 17 away from the box body 10 is connected to a pump body, and the liquid outlet end of the pump body is connected to the passivation liquid collection and supply mechanism.

[0045] In this embodiment: because the liquid outlet end of the pump body is connected to the passivation liquid collecting and supplying mechanism, the passivation liquid in the collecting area can flow into the passivation liquid collecting and supplying mechanism.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An automatic passivation device for a thin-walled carbon steel welded pipe production line, comprising a passivation liquid collection and supply mechanism, characterized in that: It also includes a box body (10) and a partition (12) installed inside the box body (10), wherein the partition (12) divides the inside of the box body (10) into two areas, namely a spraying area and a collecting area; It also includes a spray pipe (13), the spray pipe (13) passes through the surface of the box (10) and extends into the spray area, a plurality of spray heads (14) are installed at one end of the spray pipe (13) close to the spray area, and one end of the spray pipe (13) away from the box (10) is connected to the passivation pump on the passivation liquid collection and supply mechanism; A connecting pipe (20) is provided below the box body (10), and the connecting pipe (20) has three pipes, one of which is connected to an external air pump via an air inlet pipe (16), and the other two pipes are respectively connected to air rings A (23), and the two air rings A (23) are symmetrically arranged on the left and right sides of the box body (10), and each of the air rings A (23) is provided with connecting plates (25) on both sides, and is connected to the surface of the box body (10) via the connecting plates (25).

2. The automatic passivation device for thin-walled carbon steel welded pipe production line according to claim 1 is characterized by: Two cover plates (15) are hinged on the surface of the box body (10), and the two cover plates (15) seal the spraying area and the collecting area respectively.

3. The automatic passivation device for thin-walled carbon steel welded pipe production line according to claim 1 is characterized by: Two inclined guide plates (11) are installed inside the box (10), and the two guide plates (11) are respectively located in the spraying area and the collecting area.

4. The automatic passivation device for thin-walled carbon steel welded pipe production line according to claim 1 is characterized by: Through holes for the movement of steel pipes are provided on the surfaces of the box body (10) and the partition plate (12).

5. The automatic passivation device for thin-walled carbon steel welded pipe production line according to claim 1 is characterized by: The two pipes connecting the connecting pipe (20) to the air ring A (23) are both equipped with a pressure detector (21) and a valve (22).

6. The automatic passivation device for thin-walled carbon steel welded pipe production line according to claim 1 is characterized by: An air ring B (231) is provided on one side of the air ring A (23) close to the spraying area. The air ring B (231) is connected to the connecting plate (25), and the air ring B (231) and the air ring A (23) are connected via an air ring connecting pipe (24).

7. The automatic passivation device for thin-walled carbon steel welded pipe production line according to claim 1 is characterized by: A circulation hole is provided at the bottom of the partition (12), and the inner side of the bottom surface of the box body (10) is inclined, so that the liquid in the spraying area flows to the collection area through the circulation hole.

8. The automatic passivation device for thin-walled carbon steel welded pipe production line according to claim 7 is characterized by: It also comprises a connecting pipe (17), the connecting pipe (17) passes through the surface of the box body (10) and extends into the collection area, one end of the connecting pipe (17) away from the box body (10) is connected to a pump body, and the liquid outlet end of the pump body is connected to the passivation liquid collection and supply mechanism.

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