Dust suppression spray pipe for roll shaft end of working roll of rolling mill

Abstract

The utility model relates to the technical field of spray pipes, and provides a dust suppression spray pipe for a rolling mill working roller shaft end, the dust suppression spray pipe comprises a mixing chamber, one end of the mixing chamber is provided with a first medium channel and a second medium channel, and the other end of the mixing chamber is provided with a fan-shaped nozzle. The dust suppression device has the characteristics of being simple in structure and high in practicability and is suitable for dust suppression of the working roll shaft end of the rolling mill, and during use, high-pressure airflow is fed into the mixing chamber through the first medium channel, and high-pressure liquid is fed into the mixing chamber through the second medium channel; high-pressure gas and high-pressure liquid are mixed in the mixing chamber and then sprayed out through the fan-shaped nozzles to form high-speed fan-shaped mist spray, so that the mist spray amount and the mist spray area can be increased, and the high-speed mist spray has good wrapping performance on rolling process dust of a rolling mill; and therefore, the problem of serious dust escape in the rolling process of the rolling mill in the metallurgical industry is perfectly solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of spray pipes, in particular to a dust suppression spray pipe for a work roll shaft end of a rolling mill. BACKGROUND

[0002] In the hot rolling process of steel and some non-ferrous metals, red smoke is often seen at the entrance and shaft end of the rolling mill. The reason is that there is a large amount of iron oxide scale (triiron tetroxide, diiron trioxide) on the slab before it contacts the rolls. The iron oxide scale is crushed and explodes into tiny oxide dust particles under high temperature, and a large amount of particulate oxide dust is generated as the rolls move.

[0003] The dust suppression spray pipe is mainly used for dust suppression at the work roll shaft end of the rolling mill. However, in the existing dust suppression spray pipe, water is sprayed through the fan-shaped nozzle to form a spray, which is sprayed to the place where smoke is generated. In this spraying method, the covering effect and coverage area of the spray on the dust are not enough, and the thickness of the spray is thin, which affects the dust removal effect and causes serious dust escape. CONTENT OF THE INVENTION

[0004] The purpose of the present application is to provide a dust suppression spray pipe for the work roll shaft end of a rolling mill, which is suitable for dust suppression at the work roll shaft end of the rolling mill. By increasing the amount and area of the spray, the dust suppression effect is improved.

[0005] The present application provides a dust suppression spray pipe for the work roll shaft end of a rolling mill, which adopts the following technical solutions:

[0006] A dust suppression spray pipe for the work roll shaft end of a rolling mill, comprising a mixing chamber, one end of the mixing chamber is provided with a first medium channel and a second medium channel, and the other end of the mixing chamber is provided with a fan-shaped nozzle.

[0007] Preferably, the first medium channel is connected with an air inlet pipe, and the second medium channel is connected with a liquid inlet pipe.

[0008] Preferably, one end of the air inlet pipe is closed, the other end of the air inlet pipe is fixed to the outer wall of the mixing chamber, the air inlet pipe is connected with an inlet pipe, the liquid inlet pipe is located inside the air inlet pipe, one end of the liquid inlet pipe is fixed to the outer wall of the mixing chamber, the other end of the liquid inlet pipe penetrates out of the air inlet pipe, and the first medium channel is located between the liquid inlet pipe and the air inlet pipe.

[0009] Preferably, the first medium channel is annularly distributed with a plurality of channels.

[0010] Preferably, the mixing chamber comprises a first pipe cap and a second pipe cap, the first pipe cap is connected with the air inlet pipe and the liquid inlet pipe, the first medium channel and the second medium channel are arranged on the first pipe cap, the second pipe cap is sealingly arranged on the first pipe cap, and the accommodating chamber is formed between the first pipe cap and the second pipe cap and communicates with the first medium channel and the second medium channel, and the fan-shaped nozzle is arranged on the second pipe cap.

[0011] Preferably, the first pipe cap is provided with an embedding groove, and an O-shaped sealing ring is arranged in the embedding groove, and the first pipe cap and the second pipe cap are fixedly connected through a bolt-nut assembly.

[0012] Preferably, one end of the accommodating chamber close to the first pipe cap is in a bowl shape, and the other end of the accommodating chamber away from the first pipe cap is in a columnar shape.

[0013] Compared with the prior art, the application has the following beneficial effects:

[0014] The application has the characteristics of simple structure and strong practicability, is suitable for dust suppression of the shaft end of a work roll of a rolling mill, and when used, high-pressure gas is sent into the interior of the mixing chamber through the first medium channel, high-pressure liquid is sent into the interior of the mixing chamber through the second medium channel, the high-pressure gas and the high-pressure liquid are mixed in the interior of the mixing chamber and then sprayed out through the fan-shaped nozzle to form high-speed fan-shaped spray, so that the spray amount and the spray area can be increased, the high-speed spray has good wrapping property for dust in the rolling process of the rolling mill, and the problem of serious dust escape in the rolling process of the rolling mill which is common in the metallurgical industry is perfectly solved. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some of the embodiments of the application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0016] Figure 1 It is a structural schematic view of the application.

[0017] The reference signs are as follows:

[0018] 1, mixing chamber; 2, first medium channel; 3, second medium channel; 4, fan-shaped nozzle; 5, air inlet pipe; 6, liquid inlet pipe; 7, inlet pipe; 8, first pipe cap; 9, second pipe cap; 10, accommodating chamber; 11, embedding groove; 12, O-shaped sealing ring; 13, bolt-nut assembly. DETAILED DESCRIPTION

[0019] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0021] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0022] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0023] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0024] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0025] Embodiments

[0026] AsFigure 1 As shown, the dust suppression nozzle for the shaft end of the working roll of the rolling mill provided by the embodiment of the application comprises a mixing chamber 1, one end of the mixing chamber 1 is provided with a first medium channel 2 and a second medium channel 3, the other end of the mixing chamber 1 is provided with a fan-shaped spray port 4, and in specific implementation, in order to improve the dust suppression effect, the fan-shaped spray port 4 is symmetrically arranged with two groups.

[0027] In use, high-pressure gas flow is sent into the interior of the mixing chamber 1 through the first medium channel 2, high-pressure liquid is sent into the interior of the mixing chamber 1 through the second medium channel 3, the high-pressure gas and the high-pressure liquid are mixed in the interior of the mixing chamber 1 and then sprayed out through the fan-shaped spray port 4 to form high-speed fan-shaped spray, thereby being able to increase the spray amount and the spray area, and the high-speed spray has good wrapping property for the rolling mill rolling process dust, thereby perfectly solving the problem of serious dust escape in the rolling process of the rolling mill which is common in the metallurgical industry.

[0028] In the embodiment, the first medium channel 2 is connected with an air inlet pipe 5, the second medium channel 3 is connected with a liquid inlet pipe 6, in use, high-pressure gas flow is introduced into the interior of the air inlet pipe 5, the high-pressure gas flow enters the interior of the mixing chamber 1 after passing through the first medium channel 2, high-pressure liquid is introduced into the interior of the liquid inlet pipe 6, and the high-pressure liquid enters the interior of the mixing chamber 1 after passing through the second medium channel 3.

[0029] In the embodiment, one end of the air inlet pipe 5 is closed, the other end of the air inlet pipe 5 is fixed to the outer wall of the mixing chamber 1, the air inlet pipe 5 is connected with an inlet pipe 7, the liquid inlet pipe 6 is located on the inner side of the air inlet pipe 5, one end of the liquid inlet pipe 6 is fixed to the outer wall of the mixing chamber 1, the other end of the liquid inlet pipe 6 penetrates out of the air inlet pipe 5, the first medium channel 2 is located between the liquid inlet pipe 6 and the air inlet pipe 5, and the air inlet pipe 5, the liquid inlet pipe 6 and the mixing chamber 1 are all made of stainless steel material, and are connected and fixed by welding between the air inlet pipe 5 and the liquid inlet pipe 6, between the air inlet pipe 5 and the mixing chamber 1, and between the liquid inlet pipe 6 and the mixing chamber 1.

[0030] In the embodiment, the first medium channel 2 is annularly distributed with multiple first medium channels 2, thereby improving the uniformity of high-pressure gas flow.

[0031] In the embodiment, the mixing chamber 1 comprises a first pipe cap 8 and a second pipe cap 9, the first pipe cap 8 connects the air inlet pipe 5 and the air inlet pipe 5, the first medium channel 2 and the second medium channel 3 are both arranged on the first pipe cap 8, the second pipe cap 9 is sealingly installed on the first pipe cap 8, a containing cavity 10 is formed between the second pipe cap 9 and the first pipe cap 8, the containing cavity 10 is communicated with the first medium channel 2 and the second medium channel 3, and the fan-shaped spray port 4 is arranged on the second pipe cap 9.

[0032] In the embodiment, the first pipe cap 8 is provided with an embedding groove 11, and an O-shaped sealing ring 12 is arranged in the embedding groove 11. The O-shaped sealing ring 12 is used for sealing the connecting end of the first pipe cap 8 and the second pipe cap 9. The first pipe cap 8 and the second pipe cap 9 are fixedly connected through a bolt and nut assembly 13. The bolt and nut assembly 13 can be used to easily disassemble and assemble the first pipe cap 8 and the second pipe cap 9.

[0033] In the embodiment, the end of the accommodating chamber 10 close to the first pipe cap 8 is in a bowl shape, and the end of the accommodating chamber 10 away from the first pipe cap 8 is in a column shape. The bowl shape can reduce air flow resistance and ensure the spraying effect.

[0034] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Various modifications and changes can be made by those skilled in the art based on the spirit and principles of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A dust suppression spray pipe for the end of a rolling mill work roll shaft, characterized in that: It includes a mixing chamber, one end of which is provided with a first medium channel and a second medium channel, and the other end of which is provided with a fan-shaped nozzle; The first medium channel is connected to an air inlet pipe, and the second medium channel is connected to a liquid inlet pipe; One end of the air inlet pipe is closed, and the other end of the air inlet pipe is fixed to the outer wall of the mixing chamber. The air inlet pipe is connected to an inlet pipe. The liquid inlet pipe is located inside the air inlet pipe. One end of the liquid inlet pipe is fixed to the outer wall of the mixing chamber, and the other end of the liquid inlet pipe extends out of the air inlet pipe. The first medium channel is located between the liquid inlet pipe and the air inlet pipe. The first medium channel has multiple channels arranged in a ring shape; The mixing chamber includes a first cap and a second cap. The first cap connects the air inlet pipe and the air inlet pipe. The first medium channel and the second medium channel are both disposed on the first cap. The second cap is sealed and installed on the first cap. A receiving chamber is formed between the second cap and the first cap. The receiving chamber communicates with the first medium channel and the second medium channel. The fan-shaped nozzle is disposed on the second cap. The first cap is provided with a groove, and an O-ring is provided in the groove. The first cap and the second cap are fixedly connected by a bolt and nut assembly. The end of the accommodating chamber near the first cap is bowl-shaped, and the end of the accommodating chamber away from the first cap is cylindrical.

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