Descaling water retaining structure of steel pipe descaling box

Abstract

The descaling and water retaining structure comprises the descaling box, the descaling box comprises a descaling box body and a cover body, the top face of the descaling box body is open, the cover body is arranged on the top face of the descaling box body to seal the top face of the descaling box body, a descaling collecting pipe and a water retaining collecting pipe are arranged in the descaling box, and the water retaining collecting pipe is located on the front side of the descaling collecting pipe; a plurality of nozzles are arranged on the descaling collecting pipe and the water retaining collecting pipe, all the nozzles on the descaling collecting pipe face an inlet of the descaling box, and all the nozzles on the water retaining collecting pipe face an outlet of the descaling box; a partition plate is arranged between the water retaining collecting pipe and the descaling collecting pipe, the partition plate, the water retaining collecting pipe and the descaling collecting pipe are arranged side by side, the descaling box body is divided into a water retaining cavity and a descaling cavity, and the center of the partition plate is provided with a via hole for a pipe blank to pass through. The descaling collecting pipe and the water retaining collecting pipe are connected with a high-pressure pipeline through a first high-pressure hose and a second high-pressure hose respectively to introduce high-pressure water, and a throttling valve is arranged on the second high-pressure hose. According to the utility model, the energy consumption can be effectively reduced and the cost can be saved while the descaling effect and the water retaining effect are ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel processing, relates to descaling of steel pipes, and particularly relates to a descaling water blocking structure for a steel pipe descaling box. Background Technique

[0002] On hot-rolled steel pipe and heat-treated steel pipe production lines, a high-pressure water descaling box is usually arranged at the outlet of the heating furnace. High-pressure water is sprayed onto the surface of the high-temperature billet through nozzles on the annular descaling header in the box to remove the scale generated during heating, ensuring the normal progress of subsequent processes such as rolling and straightening, and improving the surface quality of the finished steel pipe.

[0003] Since the descaling box is arranged at a position less than 1 meter away from the furnace door of the heating furnace according to the process, and the distance between some on-site descaling boxes and the furnace door of the heating furnace is even less. In addition, to improve the descaling effect, the nozzles are usually set at a certain angle towards the incoming direction of the billet, that is, the inlet of the descaling box. However, when descaling is carried out in this way, a large amount of descaling water will flow along the surface of the billet towards the inlet of the descaling box and then into the heating furnace, seriously affecting the normal operation of the heating furnace and even causing damage to the equipment in the furnace area.

[0004] Based on this, the existing solution is to arrange a water blocking header side by side in front of the descaling header. The specific structural schematic diagram is as Figure 1 shown. The descaling box includes a descaling box body 1 with an open top surface and a cover body 2 arranged on the top surface of the descaling box body 1 to close the top surface of the descaling box body 1; a water blocking header 4 is arranged side by side in front of the descaling header 3 (the side where the descaling header faces the inlet of the descaling box). The descaling header 3 and the water blocking header 4 are connected in parallel to form a whole, and water is divided by one water inlet pipe. The nozzles of the descaling header face the inlet of the descaling box (the incoming direction of the billet 5), and the nozzles of the water blocking header face the outlet of the descaling box. In this way, when descaling, the water blocking header can intercept and offset most of the descaling water flowing towards the furnace door, ensuring the safety of the equipment in the furnace area. However, the water blocking header needs to consume high-pressure water, resulting in energy waste. If the water volume of the water blocking header is small, it will affect the water blocking effect. If the water consumption of the water blocking header is large, it will inevitably affect the water volume of the descaling header and thus the descaling effect when the system water volume is certain. If the water volumes of both the water blocking header and the descaling header are increased, it will increase the specifications of the descaling pump and the overall water volume of the system, increasing both costs and energy consumption. At the same time, the descaling header and the water blocking header are overhauled and replaced as a whole. When descaling different specifications of billets, when setting different descaling headers, a large number of water blocking headers also need to be set at the same time, increasing the cost of the descaling box.

[0005] Therefore, how to reduce energy consumption and save costs while ensuring the descaling effect and the water blocking effect is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0006] In view of the above deficiencies in the prior art, the purpose of the present utility model is to provide a descaling and water blocking structure for a steel pipe descaling box. The present utility model can effectively reduce energy consumption and save costs while ensuring the descaling effect and water blocking effect.

[0007] The technical solution of the present utility model is realized as follows:

[0008] A descaling and water blocking structure for a steel pipe descaling box, including a descaling box. The descaling box includes a descaling box body with an open top surface and a cover body arranged on the top surface of the descaling box body to close the top surface of the descaling box body. A descaling header and a water blocking header are arranged in the descaling box, and the water blocking header is located in front of the descaling header; a number of nozzles are arranged on both the descaling header and the water blocking header. All the nozzles on the descaling header face the entrance of the descaling box, and all the nozzles on the water blocking header face the exit of the descaling box.

[0009] A partition is arranged between the water blocking header and the descaling header. The partition is arranged side by side with the water blocking header and the descaling header, and divides the descaling box body into a water blocking chamber and a descaling chamber. A through hole for the pipe blank to pass through is arranged at the center of the partition; the descaling header and the water blocking header are respectively connected to a high-pressure pipeline through a first high-pressure hose and a second high-pressure hose to introduce high-pressure water, and a throttle valve is arranged on the second high-pressure hose.

[0010] Further, the diameter of the through hole is 20 - 30 mm larger than the maximum diameter of the descaling pipe blank in the descaling box.

[0011] Further, the cover body is composed of a first cover body and a second cover body. The first cover body and the second cover body are respectively located on the top surfaces of the water blocking chamber and the descaling chamber, and the water blocking header is fixed to the first cover body, and the descaling header is fixed to the second cover body.

[0012] Further, both the first cover body and the second cover body are arranged on the top surface of the descaling box body through stud pins and wedges.

[0013] Compared with the prior art, the present utility model has the following beneficial effects:

[0014] 1. The descaling header and the water blocking header of the present utility model are independently supplied with water, and a partition is arranged between the water blocking header and the descaling header, thereby dividing the descaling box body into a water blocking chamber and a descaling chamber. When the descaling header sprays water for descaling, most of the through hole of the partition is blocked by the pipe blank and the partition, and only a small amount of descaling water enters the water blocking chamber along the surface of the pipe blank through the gap between the pipe blank and the through hole of the partition. The water blocking header only needs a small amount of reverse water spraying to intercept and block this part of the descaling water, avoiding the overflow of descaling water into the heating furnace, ensuring the water blocking effect, ensuring the safety of the equipment in the furnace area, and thus effectively reducing energy consumption and cost. And the water inflow of the water blocking header can be adjusted through the throttle valve to reduce the water blocking amount, thereby further reducing energy consumption, reducing the erosion of the high-pressure water on the inside of the descaling box body, and extending the service life of the descaling box body.

[0015] 2. The descaling header and the water baffle header of the present utility model are independently arranged and are respectively fixed to the second cover body and the first cover body, so that multiple groups of descaling headers can be set according to the diameter specification of the tube blank to ensure the descaling effect, while only one group of water baffle headers needs to be set according to the maximum tube blank, thereby effectively reducing the cost of the descaling box. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 - Schematic structural diagram of the existing steel pipe descaling box.

[0017] Figure 2 - Schematic structural diagram of the present utility model.

[0018] Figure 3 - Figure 2 Sectional view taken along line A-A.

[0019] Figure 4 - Figure 3 Sectional view taken along line B-B.

[0020] Figure 5 - Figure 3 Sectional view taken along line C-C.

[0021] Figure 6 - Rear view of the present utility model.

[0022] Wherein: 1 - descaling box body; 2 - cover body; 3 - descaling header; 4 - water baffle header; 5 - tube blank; 6 - partition board; 7 - base; 8 - throttle valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The present utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0024] Refer to Figure 2 to Figure 6 , a descaling and water baffle structure for a steel pipe descaling box, including a descaling box, the descaling box is connected to the base 7 by bolts, and the base 7 is fixed to the ground by anchor bolts; the descaling box includes a descaling box body 1 with an open top surface and a cover body 2 arranged on the top surface of the descaling box body 1 to close the top surface of the descaling box body 1. A descaling header 3 and a water baffle header 4 are arranged in the descaling box, and the water baffle header 4 is located in front of the descaling header 3; a plurality of nozzles are arranged on both the descaling header 3 and the water baffle header 4. All the nozzles on the descaling header 3 face the entrance of the descaling box, and all the nozzles on the water baffle header 4 face the exit of the descaling box.

[0025] A partition board 6 is arranged between the water baffle header 4 and the descaling header 4. The partition board 6 is arranged side by side with the water baffle header 4 and the descaling header 3, and divides the descaling box body 1 into a water baffle chamber and a descaling chamber. A through hole for the tube blank 5 to pass through is provided at the center of the partition board 6; the descaling header 3 and the water baffle header 4 are respectively connected to high-pressure water through a first high-pressure hose and a second high-pressure hose, and a throttle valve 8 is provided on the second high-pressure hose.

[0026] The baffle here is made of stainless steel or wear-resistant plate. The descaling header and the water baffle header are two independent parts, and each is independently fed with water through a high-pressure hose. After the tube blank enters the descaling box body, the water baffle header and the descaling header spray water simultaneously. The tube blank first enters the water baffle chamber and passes through the water baffle header, then enters the descaling chamber through the baffle, and the descaling header sprays water for descaling. At this time, most of the holes (baffle through-holes) at the entrance of the descaling chamber are blocked by the tube blank and the baffle, and only a small amount of descaling water surges into the water baffle chamber along the surface of the tube blank through the gap between the tube blank and the baffle through-hole. The reverse spraying of the water baffle header can intercept and block this part of the descaling water, preventing the descaling water from overflowing into the heating furnace, ensuring the water baffle effect, and ensuring the safety of the equipment in the furnace area. At the same time, because most of the water is blocked by the tube blank and the baffle, only a small amount of water needs to be sprayed by the water baffle header here to achieve water baffle, thus effectively reducing energy consumption and cost.

[0027] Setting a throttle valve on the second high-pressure hose here can further reduce the water baffle volume through the throttle valve while ensuring the water baffle effect, which is beneficial to extending the service life of the descaling box body and reducing energy consumption.

[0028] During specific implementation, the diameter of the through-hole is 20 - 30 mm larger than the diameter of the largest descaling tube blank (the largest tube blank that can be descaled by this descaling box) of the descaling box. The cover body 2 is composed of a first cover body and a second cover body. The first cover body and the second cover body are respectively located on the top surfaces of the water baffle chamber and the descaling chamber, and the water baffle header is fixed to the first cover body, and the descaling header is fixed to the second cover body. Both the first cover body and the second cover body are arranged on the top surface of the descaling box body 1 through dowel pins and wedges.

[0029] In this way, the through-hole in the middle of the baffle is opened with a diameter 20 - 30 mm larger than the diameter of the largest pipe diameter, which can ensure the passage of the tube blank and at the same time can intercept the descaling water sprayed by the descaling header in the descaling chamber as much as possible, thereby greatly reducing the amount of water sprayed into the water baffle chamber, and then correspondingly reducing the working water volume of the water baffle header. In this way, multiple groups of descaling headers can be set according to the diameter specifications of the tube blank to ensure the descaling effect, and only one group of water baffle headers needs to be set according to the largest tube blank, thus effectively reducing the cost of the descaling box.

[0030] Here, the descaling laser is fixed to the second cover body, the descaling header is fixed to the first cover body, and at the same time, the first cover body and the second cover body are arranged on the descaling box body through dowel pins and wedges, which is convenient for overhauling and replacing the descaling header and the water baffle header.

[0031] Before production, first select the descaling header of the corresponding specification according to the specification of the tube blank to be descaled, and then fix the first cover body with the descaling header of the corresponding specification on the descaling box body. After the tube blank enters the descaling box, the water baffle header and the descaling header spray water simultaneously.

[0032] Finally, it should be noted that the above embodiments of the present utility model are only examples for illustrating the present utility model, rather than limitations on the implementation manners of the present utility model. For those of ordinary skill in the art, other different forms of changes and modifications can be made on the basis of the above description. It is impossible to enumerate all the implementation manners here. Any obvious changes or modifications derived from the technical solutions of the present utility model still fall within the protection scope of the present utility model.

Claims

1. A descaling and water-blocking structure for a steel pipe descaling box, comprising a descaling box. The descaling box includes a descaling box body with an open top surface and a cover body provided on the top surface of the descaling box body to close the top surface of the descaling box body. A descaling header and a water-blocking header are provided inside the descaling box, and the water-blocking header is located in front of the descaling header; a number of nozzles are provided on both the descaling header and the water-blocking header. All the nozzles on the descaling header face the entrance of the descaling box, and all the nozzles on the water-blocking header face the exit of the descaling box; it is characterized in that: A partition is provided between the water-blocking header and the descaling header. The partition is arranged side by side with the water-blocking header and the descaling header, and divides the descaling box body into a water-blocking chamber and a descaling chamber. A through hole for the pipe blank to pass through is provided at the center of the partition; the descaling header and the water-blocking header are respectively connected to a high-pressure pipeline through a first high-pressure hose and a second high-pressure hose to introduce high-pressure water, and a throttle valve is provided on the second high-pressure hose.

2. The descaling and water-blocking structure of a steel pipe descaling box according to claim 1, wherein The diameter of the through hole is 20 - 30 mm larger than the maximum diameter of the descaling pipe blank in the descaling box.

3. The descaling and water blocking structure of a steel pipe descaling box according to claim 2, characterized in that, The cover body is composed of a first cover body and a second cover body. The first cover body and the second cover body are respectively located on the top surfaces of the water-blocking chamber and the descaling chamber, and the water-blocking header is fixed to the first cover body, and the descaling header is fixed to the second cover body.

4. A descaling and water-blocking structure for a steel pipe descaling box according to claim 3, characterized in that, Both the first cover body and the second cover body are arranged on the top surface of the descaling box body through dowel pins and wedges.

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