Continuous rolling high-pressure descaling water descaling ring pipeline adding and unloading device

Abstract

The utility model relates to a continuous rolling high-pressure descaling water descaling ring pipeline adding and unloading device which comprises a high-pressure pump set, a descaling valve set, an unloading valve set, a descaling ring set and an unloading system arranged between the descaling valve set and the descaling ring set, and a secondary unloading valve set is connected to a pipeline between the descaling valve set and the descaling ring set through a three-way high-pressure ball valve; turbid circulating water is introduced into the dephosphorization valve group through the high-pressure pump group and enters the dephosphorization ring group, compressed air is injected into the dephosphorization valve group, the unloading valve group and the secondary unloading valve group, opening or closing of the dephosphorization valve group, the unloading valve group and the secondary unloading valve group is adjusted, dephosphorization is conducted on the core rod, and residual water is discharged into the turbid circulating pool connected with the unloading valve group and the secondary unloading valve group. Before the core rod penetrates into a hollow billet and enters a rolling mill, the secondary unloading valve assembly drains water from the descaling ring pipeline, no residual water exists in the descaling ring, and no water is sprayed to the head of the core rod to damage the head of the core rod; the service life of the core rod is prolonged; meanwhile, internal damage of the hollow billet due to no graphite at the head of the core rod is avoided, and the product percent of pass is improved.

Description

Technical Field

[0001] This utility model relates to the field of metal rolling equipment technology, specifically to an unloading device for a continuous rolling high-pressure descaling water descaling ring pipeline. Background Technology

[0002] During production, the high-pressure descaling water in continuous rolling mills is sprayed once through the cooperation of the descaling valve and the unloading valve. However, after the descaling spray, residual water remains in the descaling ring and pipeline, and the drainage time is approximately 1 minute and 40 seconds. When the mandrel enters the rolling mill, residual water from the descaling ring is sprayed onto the mandrel head, washing away the graphite on the mandrel head, resulting in a reduced mandrel lifespan and increased susceptibility to internal damage to the mandrel tube.

[0003] To address the above technical issues, a method for adding an unloading device to the continuous rolling high-pressure descaling water descaling ring pipeline is proposed. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and provide an unloading device for the descaling ring pipeline of high-pressure descaling water in continuous rolling mills. An unloading system is added to the pipeline between the original descaling valve and the descaling ring. After adding the unloading system, a secondary unloading valve group begins to drain water from the descaling ring pipeline before the mandrel enters the tube and enters the rolling mill. The opening or closing time of the secondary unloading valve group can be adjusted by a PLC system, ensuring that there is no residual water on the descaling ring and preventing water from spraying onto the mandrel head and causing damage. The operation is effective, greatly improving the service life of the mandrel, reducing mandrel material costs, and saving 500,000 yuan in mandrel costs annually. At the same time, it eliminates internal damage to the tube caused by the lack of graphite at the mandrel head, improving the product qualification rate.

[0005] The technical problem solved by this utility model is achieved through the following technical solution:

[0006] A continuous rolling high-pressure descaling water descaling ring pipeline with an added unloading device includes a high-pressure pump group, a descaling valve group, an unloading valve group, and a descaling ring group. The high-pressure pump group is connected to the descaling valve group, and the descaling valve group is connected to the unloading valve group and the descaling ring group respectively. The feature is that it also includes an unloading system disposed between the descaling valve group and the descaling ring group. The unloading system includes a secondary unloading valve group, which is connected to the pipeline between the descaling valve group and the descaling ring group through a three-way high-pressure ball valve.

[0007] Turbid circulating water is introduced into the phosphorus removal valve group and then into the phosphorus removal ring group through the high-pressure pump group. Compressed air is injected and the opening or closing of the phosphorus removal valve group, the unloading valve group and the secondary unloading valve group are adjusted to remove phosphorus from the core rod and discharge the residual water into the turbid circulating pool connected to the unloading valve group and the secondary unloading valve group respectively.

[0008] Furthermore, the turbid circulating water is introduced into the phosphorus removal valve group and then into the phosphorus removal ring group through the high-pressure pump group. Compressed air is injected and the opening or closing of the phosphorus removal valve group and the unloading valve group are adjusted to remove phosphorus from the core rod and discharge the residual water into the turbid circulating pool connected to the unloading valve group.

[0009] Furthermore, compressed air is injected and the opening or closing of the secondary unloading valve group is adjusted to discharge the residual water in the phosphorus removal ring group into the turbid circulation pool connected to the secondary unloading valve group.

[0010] Furthermore, the secondary unloading valve assembly is connected to a shut-off valve, which is connected to the pipeline between the descaling valve assembly and the descaling ring assembly via a three-way high-pressure ball valve.

[0011] Furthermore, the three-way high-pressure ball valve is φ80*10.

[0012] Furthermore, the three-way high-pressure ball valve is of type MKH-DN50-SAE420, with a nominal pressure of PN350.

[0013] Furthermore, the secondary unloading valve assembly is of type 2-VDS-09L-NO, which is controlled to open or close by a 24V solenoid valve, and the opening or closing time is adjusted by the PLC system.

[0014] The advantages and positive effects of this utility model are:

[0015] 1. This utility model adds an unloading device to the descaling ring pipeline of the high-pressure descaling water in continuous rolling mill. An unloading system is added to the pipeline between the original descaling valve and the descaling ring. After adding the unloading system, the secondary unloading valve group starts to drain water from the descaling ring pipeline before the mandrel enters the tube and enters the rolling mill. The opening or closing time of the secondary unloading valve group can be adjusted by the PLC system to achieve no residual water in the descaling ring and prevent water from spraying onto the head of the mandrel and causing damage.

[0016] 2. This utility model adds an unloading device to the continuous rolling high-pressure descaling water descaling ring pipeline, which has a good operating effect, greatly improves the service life of the mandrel, reduces the material cost of the mandrel, and can save 500,000 yuan in mandrel costs annually; at the same time, it eliminates internal damage to the tube due to the lack of graphite at the head of the mandrel, and improves the product qualification rate. Attached Figure Description

[0017] Figure 1 This is a connection structure diagram of the descaling valve group, descaling ring, and unloading valve group of the existing continuous rolling high-pressure descaling water unit.

[0018] Figure 2 Connection structure diagram of the unloading system for adding an unloading device to the continuous rolling high-pressure descaling water descaling ring pipeline of this utility model;

[0019] In the picture:

[0020] 1: High-pressure pump set; 2: Phosphorus removal valve set; 3: Unloading valve set; 4: Phosphorus removal ring; 5: Water baffle ring; 6: Three-way high-pressure ball valve; 7: Secondary unloading valve set; 8: Gate valve. Detailed Implementation

[0021] The present invention will be further described in detail below through specific embodiments. The following embodiments are only descriptive and not limiting, and should not be used to limit the protection scope of the present invention.

[0022] like Figure 2 As shown, a descaling ring pipeline with added unloading device for high-pressure descaling water in continuous rolling mill includes a high-pressure pump group 1, a descaling valve group 2, an unloading valve group 3, and a descaling ring group. The high-pressure pump group 1 is connected to the descaling valve group 2, and the descaling valve group 2 is connected to the unloading valve group 3 and the descaling ring group respectively. The descaling ring group includes a descaling ring 4 and a water-blocking ring 5. The descaling effect is ensured by the cooperation of the descaling ring 4 and the water-blocking ring 5. It also includes an unloading system set between the descaling valve group and the descaling ring group. The unloading system includes a secondary unloading valve group 7, which is connected to a stop valve 8. The stop valve 8 is connected to the pipeline between the descaling valve group and the descaling ring group through a three-way high-pressure ball valve 6. The three-way high-pressure ball valve 6 is φ80*10, MKH-DN50-SAE420 type, with a nominal pressure of PN350. The secondary unloading valve assembly 7 is a 2-VDS-09L-NO type, controlled by a 24V solenoid valve to open or close, and the opening or closing time is adjusted by a PLC system. If the secondary unloading valve assembly 7 malfunctions, the pipeline can be shut off via the stop valve 8 for repair.

[0023] Turbid circulating water is introduced into phosphorus removal valve group 2 through high-pressure pump group 1 and enters phosphorus removal ring group. Compressed air is injected and the opening or closing of phosphorus removal valve group 2, unloading valve group 3 and secondary unloading valve group 7 are adjusted to remove phosphorus from the core rod and discharge the residual water into the turbid circulating pool connected to unloading valve group 3 and secondary unloading valve group 7 respectively.

[0024] like Figure 1 As shown, the existing continuous rolling high-pressure descaling water device has the following connection structure: the descaling valve group, the descaling ring group, and the unloading valve group 3 are connected together. Turbid circulating water is introduced into the descaling valve group 2 through the high-pressure pump group 1 and enters the descaling ring group. Compressed air is injected and the opening or closing of the descaling valve group 2 and the unloading valve group 3 are adjusted to descal the mandrel and discharge the residual water into the turbid circulating pool connected to the unloading valve group 3. There is residual water in the descaling ring 4 and pipeline of the descaling ring group.

[0025] like Figure 2As shown in the diagram, this utility model relates to a connection structure of an unloading system for a continuous rolling high-pressure descaling water descaling ring pipeline with an added unloading device. Before the mandrel enters the rolling mill through the tube, the secondary unloading valve begins to drain water from the descaling ring pipeline. Compressed air is injected and the opening or closing of the secondary unloading valve group 7 is adjusted to discharge the residual water in the descaling ring group into the turbid circulation pool connected to the secondary unloading valve group 7. The opening or closing time of the secondary unloading valve group 7 is adjustable and can be adjusted by a PLC system to ensure that there is no residual water in the descaling ring and that no water will be sprayed onto the head of the mandrel, causing damage to it.

[0026] This utility model adds an unloading device to the descaling ring pipeline of the high-pressure descaling water in continuous rolling mill. An unloading system is added to the pipeline between the original descaling valve and the descaling ring. After adding the unloading system, the secondary unloading valve starts to drain water from the descaling ring pipeline before the mandrel enters the tube and enters the rolling mill. The opening or closing time of the secondary unloading valve group 7 is adjustable and can be adjusted by the PLC system to ensure that there is no residual water in the descaling ring and no more water will be sprayed onto the head of the mandrel, causing damage to it.

[0027] This utility model adds an unloading device to the continuous rolling high-pressure descaling water descaling ring pipeline, which has good operating results, greatly improves the service life of the mandrel, reduces the material cost of the mandrel, and can save 500,000 yuan in mandrel costs annually; at the same time, it eliminates internal damage to the tube due to the lack of graphite at the head of the mandrel, and improves the product qualification rate.

[0028] Although embodiments and drawings of the present invention have been disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, variations and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A device for adding unloading to a continuous rolling mill high-pressure descaling water descaling ring pipeline, comprising a high-pressure pump group, a descaling valve group, an unloading valve group, and a descaling ring group, wherein the high-pressure pump group is connected to the descaling valve group, and the descaling valve group is respectively connected to the unloading valve group and the descaling ring group, characterized in that: It also includes an unloading system set between the descaling valve group and the descaling ring group, the unloading system including a secondary unloading valve group, the secondary unloading valve group being connected to the pipeline between the descaling valve group and the descaling ring group through a three-way high-pressure ball valve; Turbid circulating water is introduced into the phosphorus removal valve group and then into the phosphorus removal ring group through the high-pressure pump group. Compressed air is injected and the opening or closing of the phosphorus removal valve group, the unloading valve group and the secondary unloading valve group are adjusted to remove phosphorus from the core rod and discharge the residual water into the turbid circulating pool connected to the unloading valve group and the secondary unloading valve group respectively.

2. The unloading device for the continuous rolling high-pressure descaling water descaling ring pipeline according to claim 1, characterized in that: Turbid circulating water is introduced into the phosphorus removal valve group and then into the phosphorus removal ring group through the high-pressure pump group. Compressed air is injected and the opening or closing of the phosphorus removal valve group and the unloading valve group are adjusted to remove phosphorus from the core rod and discharge the residual water into the turbid circulating pool connected to the unloading valve group.

3. The unloading device for the continuous rolling high-pressure descaling water descaling ring pipeline according to claim 1, characterized in that: Compressed air is injected and the opening or closing of the secondary unloading valve group is adjusted to discharge the residual water in the phosphorus removal ring group into the turbid circulation pool connected to the secondary unloading valve group.

4. The unloading device for the continuous rolling high-pressure descaling water descaling ring pipeline according to claim 1, characterized in that: The secondary unloading valve assembly is connected to a shut-off valve, which is connected to the pipeline between the descaling valve assembly and the descaling ring assembly via a three-way high-pressure ball valve.

5. The unloading device for the continuous rolling high-pressure descaling water descaling ring pipeline according to claim 1, characterized in that: The three-way high-pressure ball valve is φ80*10.

6. The unloading device for the continuous rolling high-pressure descaling water descaling ring pipeline according to claim 1, characterized in that: The three-way high-pressure ball valve is of type MKH-DN50-SAE420, with a nominal pressure of PN350.

7. The unloading device for the continuous rolling high-pressure descaling water descaling ring pipeline according to claim 1, characterized in that: The secondary unloading valve assembly is of type 2-VDS-09L-NO, which is controlled to open or close by a 24V solenoid valve, and the opening or closing time is adjusted by the PLC system.

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