Low-pressure water purging header for EPS (Expandable Polystyrene) surface treatment production line

Abstract

The utility model discloses a low-pressure water purging header for an EPS (Expandable Polystyrene) surface treatment production line, which comprises a main pipe arranged in an EPS surface treatment unit, a plurality of groups of nozzle modules for uniformly purging and spraying the surface of a blank and a plurality of groups of mounting modules for locking and mounting the nozzle modules, the plurality of groups of nozzle modules are uniformly arranged on one side of the main pipe at intervals, a plurality of groups of mounting modules are arranged corresponding to the nozzle modules, and the plurality of groups of mounting modules are respectively arranged at the end parts of the plurality of groups of nozzle modules. The distance between every two adjacent nozzles is kept uniform, it is guaranteed that water is evenly distributed during spraying of the nozzles, spraying watermarks of every two adjacent nozzles or the same row of nozzles are overlapped without interference, dovetail groove type nozzle fastening nuts are adopted in the installation modules, the wall thickness of the installation modules is increased, and the abrasion resistance of the nozzle nuts in the blowing process is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of hot-rolled coil surface treatment, in particular to a low-pressure water purging header for an EPS surface treatment production line. Background Art

[0002] In the existing technology, the method of hot-rolled coil surface treatment is mainly based on pickling technology. However, pickling is very harmful to personnel, equipment and the environment, and the cost of production operation and maintenance is high. Therefore, a new technology and process to replace pickling has been developed. Many technical researches and attempts have been made in the industry. EPS surface treatment line is an advanced, mature and formally applied technology. The treatment line adopts the latest hot-rolled steel coil (plate) surface treatment technology. The main function of the EPS unit is to cut the head and tail, straighten, pickle-free wet steel shot blasting and drying of the hot-rolled raw steel coil, and The stable tension and EPC deviation correction function enable the treated strip to be rewound. The basic principle is that the working medium, i.e., a mixture of hard steel sand and water, is sprayed on the upper and lower surfaces of the steel plate. Under the action of the impact force, the iron oxide on the surface of the steel plate is removed, making the steel plate smooth and clean. EPS can avoid pre-treatment processes such as pickling, shot blasting, and painting, and realize green and clean production. In the surface treatment unit, the surface of the steel plate after sandblasting needs to be purged. In this process, the currently used low-pressure purge header is difficult to meet the process requirements. The schematic diagram of the low-pressure purge header structure in the prior art is shown in the figure below. Figure 1 shown.

[0003] Analyzing the above manifold arrangement, we can know that: 1) All nozzles are symmetrically distributed, the deflection angles of the nozzles on both sides are 60 degrees to the left and 60 degrees to the right respectively, the spraying directions of the nozzles on both sides are mirror-symmetrical, the spacing between the two middle nozzles is half of the spacing between the nozzles on both sides, and the angles between the nozzles and the axis are 30 degrees to the left and 30 degrees to the right respectively. In actual production, such a nozzle arrangement often results in a large difference between the spraying area of ​​the edge nozzles and the spraying area of ​​the two middle nozzles, resulting in uneven impact force of the nozzles; 2) In terms of nozzle arrangement, the spacing between adjacent nozzles is not the same, resulting in the failure to consider the uniformity of water superposition when the nozzles are spraying, resulting in the failure to achieve uniform spraying on the billet surface.

[0004] In summary, using such a nozzle arrangement will lead to uneven water distribution between the nozzles, and thus uneven blowing force on the surface of the billet, making it difficult to meet the production process requirements for uniform blowing force on the billet surface. Utility Model Content

[0005] The utility model aims to provide a low-pressure water blowing header for an EPS surface treatment production line.

[0006] In order to achieve the above purpose, the technical solution proposed by the utility model is:

[0007] A low-pressure water blowing manifold for an EPS surface treatment production line comprises a main pipe, which is arranged in an EPS surface treatment unit, and also comprises a nozzle module for evenly blowing and spraying the surface of a blank and an installation module for locking and installing the nozzle module. The nozzle modules are provided in a plurality of groups, and the plurality of groups of nozzle modules are evenly spaced and arranged on one side of the main pipe. The installation modules are provided in a plurality of groups corresponding to the nozzle modules, and the plurality of groups of installation modules are respectively arranged at the ends of the plurality of groups of nozzle modules.

[0008] The nozzle module includes a nozzle seat and a nozzle, wherein the nozzle seat is arranged at one side of the main pipe and is fixedly connected to the main pipe, the interior of the nozzle seat is arranged as a hollow structure and the main pipe is provided with a connecting hole corresponding to the nozzle seat, the nozzle seat is connected with the interior of the main pipe through the connecting hole, and the nozzle is arranged at one end of the nozzle seat away from the main pipe and is fixedly connected to the nozzle seat.

[0009] The interior of the nozzle is arranged as a hollow structure and is communicated with the interior of the nozzle seat. An injection port is arranged at one end of the nozzle away from the nozzle seat, and the injection port is arranged as a dovetail fan-shaped structure.

[0010] The mounting module includes a mounting nut and a positioning ring. The mounting nut is arranged at the connection between the nozzle and the nozzle seat and is threadedly connected to the nozzle seat. The positioning ring is arranged at the upper end of the mounting nut and is integrally formed with the mounting nut. The upper part of the nozzle protrudes from the upper end of the positioning ring.

[0011] The inner diameter of the positioning ring is smaller than the inner diameter of the mounting nut and an annular chamfered structure is provided on the inner side of the upper end of the positioning ring. A dovetail groove structure is provided at the connection between the positioning ring and the mounting nut.

[0012] A mounting flange is provided in the middle of the nozzle, the mounting flange is located on the inner side of the dovetail groove structure and is arranged in close contact with the positioning ring, and the nozzle is fixedly connected to the nozzle seat through the mounting nut and the positioning ring.

[0013] It also includes a welding plug, which is arranged at one end of the main pipe and fixedly connected to the main pipe.

[0014] The main pipe is provided with mounting parts corresponding to the plurality of nozzle modules and the plurality of mounting modules, and the nozzle seat is arranged at the mounting part of the main pipe.

[0015] The beneficial effects of the utility model are:

[0016] The structure is simple. The nozzle module cooperates with the installation module to ensure the uniformity of the impact force level formed in the vertical direction, that is, the level of the blowing force, as much as possible, to avoid the uneven blowing force caused by the injection position of the low-pressure nozzle not being perpendicular to the surface of the blank, to keep the distance between the two adjacent nozzles uniform, to ensure the uniform distribution of water during nozzle injection, to make the injection watermarks of the two adjacent nozzles or the nozzles in the same row overlap without interference, to avoid the uneven distribution of water, that is, the blowing force, caused by the different distances between the two adjacent low-pressure nozzles. The installation module adopts a dovetail groove nozzle fastening nut, and its wall thickness is thickened to ensure the wear resistance of the nozzle nut during the blowing process, to avoid the non-wear resistance of the fastening nut due to the poor material of the low-pressure nozzle fastening nut, and to increase the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the low-pressure purge header structure in the prior art;

[0018] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 3 This is a cross-sectional view of the nozzle module and the main pipe of the utility model;

[0020] Figure 4 This is a schematic diagram of the cooperation between the nozzle and the installation module of the utility model;

[0021] Figure 5 This is a schematic diagram of the installation module structure of the utility model;

[0022] Figure 6 This is a schematic diagram of the cooperation between the welding plug and the main pipe of the utility model;

[0023] Figure 7 This is a simulation diagram of the spray effect of the lower purge header of the embodiment of the utility model;

[0024] Figure 8 It is a spray watermark image formed on the surface of the blank by the lower purge header of the embodiment of the utility model;

[0025] Fig. 9 This is a water distribution diagram formed on the surface of the blank by the lower purge header of the embodiment of the utility model.

[0026] In the figure: 1. Main pipe; 2. Nozzle holder; 3. Nozzle; 4. Mounting nut; 5. Positioning ring; 6. Welding plug. DETAILED DESCRIPTION

[0027] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0028] A low-pressure water purge manifold for an EPS surface treatment production line includes a main pipe 1, which is arranged in an EPS surface treatment unit, and also includes a nozzle module for evenly purging and spraying the surface of a blank and an installation module for locking and installing the nozzle module. The nozzle modules are provided with a plurality of groups, and the plurality of groups of nozzle modules are evenly spaced and arranged on one side of the main pipe 1. The installation modules are provided with a plurality of groups corresponding to the nozzle modules, and the plurality of groups of installation modules are respectively arranged at the ends of the plurality of groups of nozzle modules. The overall structural schematic diagram of the utility model is shown as follows Figure 2 shown.

[0029] The nozzle module includes a nozzle seat 2 and a nozzle 3. The nozzle seat 2 is arranged at one side of the main pipe 1 and is fixedly connected to the main pipe 1. The interior of the nozzle seat 2 is set as a hollow structure and the main pipe 1 is provided with a connecting hole corresponding to the nozzle seat 2. The nozzle seat 2 is connected with the interior of the main pipe 1 through the connecting hole. The nozzle head 3 is arranged at one end of the nozzle seat 2 away from the main pipe 1 and is fixedly connected to the nozzle seat 2. The interior of the nozzle head 3 is set as a hollow structure and is connected with the interior of the nozzle seat 2. The nozzle module cooperates with the nozzle seat 2 and the nozzle head 3 to form a self-positioning uniform wide flow nozzle structure, wherein the nozzle seat 2 is used to provide installation support for the nozzle head 3, and the nozzle head 3 is used to ensure the uniformity of the impact force level formed by the nozzle module in the vertical direction, that is, the level of the blowing force. Several groups of nozzle modules are evenly spaced to ensure that the water volume distribution during nozzle spraying is uniform, and the spray watermarks of two adjacent nozzles or the same row of nozzles are superimposed without interference. The cross-sectional view of the nozzle module and the main pipe 1 of the utility model is shown in Figure 3 shown.

[0030] The nozzle 3 is provided with a spray port at one end away from the nozzle holder 2, and the spray port is arranged in a dovetail fan-shaped structure, wherein the spray port of the dovetail fan-shaped structure can ensure the uniformity of spraying while realizing wide flow rate spraying. The schematic diagram of the cooperation between the nozzle 3 of the utility model and the mounting module is shown in FIG. Figure 4 shown.

[0031] The mounting module includes a mounting nut 4 and a positioning ring 5. The mounting nut 4 is arranged at the connection between the nozzle head 3 and the nozzle seat 2 and is threadedly connected to the nozzle seat 2. The positioning ring 5 is arranged at the upper end of the mounting nut 4 and is integrally formed with the mounting nut 4. The upper part of the nozzle head 3 protrudes from the upper end of the positioning ring 5. The inner diameter of the positioning ring 5 is smaller than the inner diameter of the mounting nut 4 and an annular chamfered structure is provided on the inner side of the upper end of the positioning ring 5. A dovetail groove structure is provided at the connection between the positioning ring 5 and the mounting nut 4. A mounting convex edge is provided in the middle of the nozzle head 3. The mounting convex edge is located at the dovetail groove structure. The nozzle 3 is fixedly connected to the nozzle seat 2 through the mounting nut 4 and the positioning ring 5. The mounting module cooperates with the mounting nut 4 and the positioning ring 5 to realize the installation connection between the nozzle 3 and the nozzle seat 2, wherein the mounting nut 4 is used to provide installation support for the positioning ring 5, and the positioning ring 5 is used to form a mounting structure together with the mounting nut 4 to realize the installation connection between the nozzle 3 and the nozzle seat 2. The wall thickness of the mounting nut 4 is thickened to ensure its wear resistance during the purge process. The schematic diagram of the mounting module structure of the utility model is shown in Figure 5 shown.

[0032] The welding plug 6 is also included. The welding plug 6 is arranged at one end of the main pipe 1 and is fixedly connected to the main pipe 1. The welding plug 6 is used as a plug structure on the header. The schematic diagram of the welding plug 6 and the main pipe 1 of the utility model is shown in FIG. Figure 6 shown.

[0033] The main pipe 1 is provided with mounting parts corresponding to several groups of nozzle modules and several groups of mounting modules, and the nozzle holder 2 is arranged on the mounting part of the main pipe 1, wherein the mounting part is used as a mounting structure on the main pipe 1 to meet the installation requirements of the nozzle modules.

[0034] Example:

[0035] Lower purge header:

[0036] 31 nozzles are installed on the header, and the flow rate of each header at 10 bar pressure is 436.5 L / min, and the flow rate at 15 bar pressure is 534.6 L / min. The total flow rate of the three headers is 1603.8 L / min, which meets the flow rate requirement of 440 gmp, i.e. 1663.2 L / min, of the pump flow at 15 bar pressure. The simulation diagram of the spray effect of the lower purge header of the utility model embodiment is as follows: Figure 7 As shown, the spray watermark formed on the surface of the blank by the lower purge header of the utility model is as follows Figure 8 As shown, the water distribution diagram formed by the lower purge header of the utility model embodiment on the surface of the blank is as follows Fig. 9 shown.

[0037] Working principle:

[0038] The nozzle module and the mounting module are evenly arranged on the main pipe 1 through the mounting part, and the blowing of the nozzle on the surface of the blank in the vertical direction is taken into consideration, and the uniformity of the impact force level formed in the vertical direction, that is, the blowing force level, is ensured as much as possible. The nozzle arrangement method of the existing low-pressure water blowing manifold is changed, and the distance between two adjacent nozzles of the manifold is adjusted from the original uneven distance to a uniform distance to ensure that the water volume distribution during nozzle spraying is uniform, and the spray watermarks of two adjacent nozzles or nozzles in the same row are overlapped without interference. In addition, the structure of the mounting nut 4 of the nozzle on the manifold is optimized, and its wall thickness is thickened to ensure the wear resistance of the nozzle nut during the blowing process.

[0039] The beneficial effects of the utility model are that the structure is simple, and the nozzle module and the installation module are coordinated to ensure the uniformity of the impact force level formed in the vertical direction, that is, the blowing force level, as much as possible, to avoid the uneven blowing force caused by the injection position of the low-pressure nozzle not being perpendicular to the surface of the blank, to keep the spacing between two adjacent nozzles uniform, to ensure that the water distribution during nozzle injection is uniform, to make the injection watermarks of two adjacent nozzles or nozzles in the same row overlap without interference, to avoid the uneven water distribution, that is, the blowing force, caused by the different spacing between two adjacent low-pressure nozzles; the installation module adopts a dovetail groove nozzle fastening nut, and its wall thickness is thickened to ensure the wear resistance of the nozzle nut during the blowing process, to avoid the non-wear resistance of the fastening nut due to the poor material of the low-pressure nozzle fastening nut, and to improve the service life.

[0040] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A low-pressure water purge header for an EPS surface treatment production line, comprising a main pipe (1), wherein the main pipe (1) is arranged in an EPS surface treatment unit, and is characterized in that: It also includes a nozzle module for evenly blowing and spraying the surface of the blank and a mounting module for locking and mounting the nozzle module. The nozzle modules are provided in a plurality of groups, and the plurality of groups of nozzle modules are evenly spaced and arranged on one side of the main pipe (1). The mounting modules are provided in a plurality of groups corresponding to the nozzle modules, and the plurality of groups of mounting modules are respectively arranged at the ends of the plurality of groups of nozzle modules.

2. A low-pressure water purge header for an EPS surface treatment production line as claimed in claim 1, characterized in that: The nozzle module comprises a nozzle seat (2) and a nozzle (3); the nozzle seat (2) is arranged on one side of the main pipe (1) and is fixedly connected to the main pipe (1); the interior of the nozzle seat (2) is arranged as a hollow structure and the main pipe (1) is provided with a connecting hole corresponding to the nozzle seat (2); the nozzle seat (2) is connected with the interior of the main pipe (1) through the connecting hole; and the nozzle (3) is arranged at one end of the nozzle seat (2) away from the main pipe (1) and is fixedly connected to the nozzle seat (2).

3. A low-pressure water purge header for an EPS surface treatment production line as claimed in claim 2, characterized in that: The interior of the nozzle (3) is arranged as a hollow structure and is in communication with the interior of the nozzle seat (2); an injection port is arranged at one end of the nozzle (3) away from the nozzle seat (2); the injection port is arranged as a dovetail fan-shaped structure.

4. A low-pressure water purge header for an EPS surface treatment production line as claimed in claim 3, characterized in that: The mounting module comprises a mounting nut (4) and a positioning ring (5); the mounting nut (4) is arranged at the connection between the nozzle (3) and the nozzle seat (2) and is threadedly connected to the nozzle seat (2); the positioning ring (5) is arranged at the upper end of the mounting nut (4) and is integrally formed with the mounting nut (4); the upper part of the nozzle (3) protrudes from the upper end of the positioning ring (5).

5. A low-pressure water purge header for an EPS surface treatment production line as claimed in claim 4, characterized in that: The inner diameter of the positioning ring (5) is smaller than the inner diameter of the mounting nut (4), and an annular chamfered structure is provided on the inner side of the upper end of the positioning ring (5), and a dovetail groove structure is provided at the connection between the positioning ring (5) and the mounting nut (4).

6. A low-pressure water purge header for an EPS surface treatment production line as claimed in claim 5, characterized in that: A mounting flange is provided in the middle of the nozzle (3), the mounting flange is located on the inner side of the dovetail groove structure and is arranged in close contact with the positioning ring (5), and the nozzle (3) is fixedly connected to the nozzle seat (2) via the mounting nut (4) and the positioning ring (5).

7. A low-pressure water purge header for an EPS surface treatment production line as claimed in claim 6, characterized in that: It also comprises a welding plug (6), which is arranged at one end of the main pipe (1) and is fixedly connected to the main pipe (1).

8. A low-pressure water purge header for an EPS surface treatment production line as claimed in claim 7, characterized in that: The main pipe (1) is provided with mounting parts corresponding to a plurality of groups of nozzle modules and a plurality of groups of mounting modules, and the nozzle seat (2) is arranged on the mounting part of the main pipe (1).

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