Environment-friendly dust removal device for steel mill

Abstract

The utility model discloses an environment-friendly dust removal device for a steel mill, relates to the field of environmental protection, and aims to solve the problems that when an existing dust removal device is used for carrying out dust removal treatment on the steel mill, accurate dust suppression cannot be achieved, and the water spraying amount cannot be adjusted in real time according to the smoke dust concentration. A main pipeline is arranged at the top end of the supporting pipe, the main pipeline and the supporting pipe are fixedly connected with a rotating connector through a flange, an inner cavity of the main pipeline is communicated with an inner cavity of the supporting pipe through the rotating connector, an electric control valve is arranged in the middle of the main pipeline, the upper end of the main pipeline is fixedly communicated with a self-rotating spray head, and the main pipeline is communicated with a connecting pipe located below the electric control valve. The dust suppression device has the advantages that the precise dust suppression effect can be achieved in the dust suppression operation through the adjusting spray head, the self-rotating spray head and the adjusting spray head work cooperatively, 360-degree dead-angle-free operation can be achieved, and the rapid and comprehensive dust suppression effect is achieved.

Description

A dust removal device for steel plants Technical Field

[0001] This utility model relates to the field of environmental protection technology, and in particular to an environmental dust removal device for steel plants. Background Technology

[0002] As a typical heavy industry, the steel industry generates large amounts of smoke and dust during its production processes, including raw material loading and unloading, blast furnace tapping, converter steelmaking, continuous casting, and rolling. High concentrations of smoke and dust in production workshops reduce visibility, impairing operators' vision and increasing the probability of accidents. Long-term exposure to such an environment can lead to occupational diseases such as pneumoconiosis among employees.

[0003] Currently, dust suppression devices are widely used in steel plants to reduce the smoke and dust generated during production. However, once installed, the nozzle positions and spray directions of existing dust suppression devices are fixed, making it impossible to flexibly adjust them according to the actual location and diffusion direction of smoke and dust during production. In the complex production environment of steel plants, the sources of smoke and dust are dynamically changing. For example, in the raw material yard, loading and unloading operations at different locations can generate localized smoke and dust; in the steelmaking workshop, the direction of smoke and dust escape during converter blowing changes depending on the reaction conditions inside the furnace. However, existing dust suppression devices with fixed spray angles and directions cannot track these changes in smoke and dust in a timely manner, resulting in some areas of smoke and dust not being effectively covered, a lack of precision in dust suppression operations, and a significant reduction in dust suppression effectiveness.

[0004] Furthermore, traditional dust suppression devices rely on manual valve adjustment to control water flow, making it impossible to adjust the spray volume in real time based on operating conditions such as dust concentration and diffusion rate. Insufficient water volume leads to inadequate dust suppression; excessive water volume wastes water resources, exacerbates the sludge treatment burden on steel plants, and increases overall operating costs. Summary of the Invention

[0005] In view of the above situation and to overcome the defects of the prior art, this utility model provides an environmental protection dust removal device for steel plants. This design effectively solves the problems that existing dust removal devices cannot achieve precise dust suppression and cannot adjust the water spray volume in real time according to the dust concentration when performing dust removal treatment in steel plants.

[0006] To achieve the above objectives, this utility model provides the following technical solution: This utility model includes a base, on which a vertically arranged support pipe is fixedly connected. A main pipe is provided at the top of the support pipe. A rotary joint is fixedly connected to the main pipe and the support pipe via a flange. The rotary joint connects the inner cavity of the main pipe and the inner cavity of the support pipe. An electrically controlled valve is provided in the middle of the main pipe. A self-rotating nozzle is fixedly connected to the upper end of the main pipe. A connecting pipe is connected to the main pipe. The connecting pipe is located below the electrically controlled valve. An adjusting nozzle is fixedly connected to the other end of the connecting pipe. An angle adjustment component is installed between the adjusting nozzle and the main pipe.

[0007] Preferably, the angle adjustment assembly includes a lifting sleeve, a connecting rod hinged to the lifting sleeve, the lower end of the connecting rod hinged to the adjusting nozzle, a connecting pin rotatably connected to the middle of the adjusting nozzle, a support block fixedly connected to the rotary joint, and a groove provided on the support block for the connecting pin to slide.

[0008] Preferably, the lifting sleeve has a through hole that mates with the main pipe, the lifting sleeve is slidably connected to the main pipe, and a telescopic rod is connected between the lifting sleeve and the rotary joint.

[0009] Preferably, there are three sets of connecting pipes, and the three sets of connecting pipes are connected to a five-way connector. The five-way connector is fixedly connected to the main pipe, and the connecting pipe is a corrugated pipe.

[0010] Preferably, a baffle plate is fixedly connected below the self-rotating nozzle, and the edge of the baffle plate is provided with a downward inclined groove.

[0011] Preferably, the self-rotating nozzle includes a housing, the inner cavity of the housing is connected to the inner cavity of the main pipe, and a plurality of equally angled fan-shaped blades are connected on the cylindrical surface of the housing. The fan-shaped blades are provided with transition grooves, and nozzles that communicate with the inner cavity of the housing are provided in the transition grooves.

[0012] Compared with the prior art, the outstanding advantages of this utility model are:

[0013] This utility model includes an angle adjustment component for adjusting the elevation angle of the nozzle. With the action of the angle adjustment component, the nozzle can be adjusted. During dust suppression, the nozzle can be adjusted without moving the support tube and base, so that the nozzle can achieve a precise dust suppression effect.

[0014] This invention features a rotary joint and a self-rotating nozzle installed on the main pipeline, requiring no additional power. The self-rotating nozzle and the adjustable nozzle can operate 360 ​​degrees without dead angles, avoiding dust suppression dead zones. Furthermore, by increasing the operation of the self-rotating nozzle, the amount of liquid sprayed outward is increased, enabling the device to achieve rapid dust suppression. The self-rotating nozzle is controlled by an electronic valve, which also avoids the problem of water waste. Attached Figure Description

[0015] Figure 1 is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 is a schematic diagram of the upper connection of the rotary joint of this utility model.

[0017] Figure 3 is a schematic diagram of the connection structure of the adjustable nozzle of this utility model.

[0018] Figure 4 is a schematic diagram of the forward structure of the main pipeline of this utility model.

[0019] Figure 5 is a schematic diagram of the self-rotating nozzle structure of this utility model.

[0020] The following are the labeling elements in the diagram: 1. Base; 2. Support pipe; 3. Main pipe; 4. Rotary joint; 5. Electrically controlled valve; 6. Self-rotating nozzle; 601. Housing; 602. Fan-shaped blade; 603. Transition groove; 604. Nozzle; 7. Adjustable nozzle; 8. Angle adjustment assembly; 801. Lifting sleeve; 802. Connecting rod; 803. Connecting pin; 804. Support block; 805. Slide groove; 806. Telescopic rod; 9. Five-way connector; 10. Water baffle; 11. Connecting pipe. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please refer to Figures 1-5. This embodiment describes an environmental dust removal device for steel plants: it includes a base 1, on which a vertically arranged support pipe 2 is fixedly connected. A main pipe 3 is provided at the top of the support pipe 2. The main pipe 3 and the support pipe 2 are fixedly connected by a rotary joint 4 through a flange. The rotary joint 4 connects the inner cavity of the main pipe 3 and the inner cavity of the support pipe 2. An electrically controlled valve 5 is provided in the middle of the main pipe 3. A self-rotating nozzle 6 is fixedly connected to the upper end of the main pipe 3. A connecting pipe 11 is connected to the main pipe 3. The connecting pipe 11 is located below the electrically controlled valve 5. An adjusting nozzle 7 is fixedly connected to the other end of the connecting pipe 11. An angle adjustment component 8 is installed between the adjusting nozzle 7 and the main pipe 3.

[0023] The base 1 is supported by high-strength steel. Ribs are added at the connection between the base 1 and the support pipe 2. The base 1 has bolt holes for installing anchor bolts, ensuring sufficient stability for the support rod and the upper dust removal equipment. The support pipe 2 has a hollow cavity and is a metal structure. One end of the cavity is connected to a high-pressure water pipe, and the other end is connected to the inner cavity of the main pipe 3 via a rotary joint 4. The rotary joint 4 is a commonly used connection device in existing pipelines. The connection between the main pipe 3 and the support pipe 2 allows for continuous 360-degree rotation of the main pipe 3 without affecting the water supply from the support pipe 2 to the main pipe 3. The electrically controlled valve 5 in the middle of the main pipe 3 controls the water supply to the self-rotating nozzle 6 at the upper end of the main pipe 3. The connecting pipe 11 at the lower end of the electrically controlled valve 5 supplies water to the regulating nozzle 7. The water supply to the connecting pipe 11 is not controlled by a solenoid valve. After the main pipe 3 starts supplying water, the regulating nozzle 7 adjusts the water supply to the connecting pipe 11. The system begins spraying atomized water droplets outwards for physical dust suppression. The rotating nozzle 6 can choose whether to open the electrically controlled valve 5 based on the conditions inside the steel plant. When there is a large amount of dust in the plant, the electrically controlled valve 5 opens, and the rotating nozzle 6 and the adjusting nozzle 7 work synchronously. As the rotating nozzle 6 rotates, the reaction force of the water flow drives the main pipe 3 to rotate, which in turn drives the adjusting nozzle 7 to rotate. This allows the adjusting nozzle 7 and the rotating nozzle 6 to spray water 360 degrees for dust suppression, increasing the range and effectiveness of dust suppression and achieving rapid dust reduction. Conversely, when there is less dust in the plant, the electrically controlled valve 5 closes, the rotating nozzle 6 does not spray water, and the main pipe 3 does not rotate. The adjusting nozzle 7 then performs directional dust suppression. While the orientation of the adjusting nozzle 7 is fixed, its elevation angle is adjustable thanks to the angle adjustment component 8. This improves the applicability of the adjusting nozzle 7 in practical use, allowing it to precisely target the dust source.

[0024] The lifting sleeve 801 inside the angle adjustment assembly 8 is fitted onto the outside of the main pipe 3 through a through hole. The lifting sleeve 801 can slide vertically on the main pipe 3, as shown in Figure 2. When the lifting sleeve 801 moves upward, it drives the connecting rod 802 to move upward. After the upper end of the connecting rod 802 moves upward, the lower end of the connecting rod 802 will drive the adjusting nozzle 7 to move towards the axis of the main pipe 3. At the same time, the connecting rod 802 pulls the rear end of the adjusting nozzle 7 upward, and the front end of the adjusting nozzle 7 tilts downward, thereby achieving the purpose of adjusting the tilt angle of the adjusting nozzle 7. The support block 804 above the rotary joint 4 supports the adjusting nozzle 7. The sliding groove 805 on the support block 804 allows the adjusting nozzle 7 to have a degree of freedom of sliding. The connecting pin 803 is rotatably connected to the adjusting nozzle 7, allowing the adjusting nozzle 7 to have a degree of freedom of rotation. Through the cooperation of the connecting pin 803 and the sliding groove 805, interference between the movement of the lifting sleeve 801 and the adjusting nozzle 7 is avoided when the lifting sleeve 801 moves. The telescopic rod 806 below the lifting sleeve 801 is electrically controlled. The telescopic rod 806 can be remotely controlled, allowing operators to control the elevation angle of the spray head 7 from the ground, which is convenient for operation.

[0025] Furthermore, three sets of connecting pipe 11 and adjusting nozzles 7 can be set, with the three sets of adjusting nozzles 7 surrounding the main pipe 3 at equal angles. This can increase the effective area of ​​the dust suppression equipment and reduce the dust removal dead angle. The connecting pipe 11 is preferably a corrugated pipe, with the outer layer of the corrugated pipe reinforced with rubber steel wire. The corrugated pipe can play a displacement compensation role in adjusting the angle of the adjusting nozzles 7, preventing the connecting pipe 11 from breaking during the pulling process.

[0026] The self-rotating nozzle 6 is connected to a baffle plate 10 below. The edge of the baffle plate 10 is even a sloping groove with a taper of 70 degrees. In this way, the liquid sprayed by the self-rotating nozzle 6 onto the baffle plate 10 is scattered in all directions under the action of the sloping groove. The baffle plate 10 can reduce the erosion of the liquid on the angle adjustment component 8 below and improve the service life of the device.

[0027] The inner cavity of the housing 601 of the self-rotating nozzle 6 is connected to the main pipe 3. The upper end of the housing 601 is sealed and welded. The side of the housing 601 has six sets of fan-shaped blades 602, which are made of brass. The six sets of fan-shaped blades 602 are evenly distributed at 60° around the circumference of the housing 601, and a transition groove 603 is provided on each fan-shaped blade 602. The nozzle 604 is installed on the transition groove 603. Under the action of the transition groove 603, the nozzle 604 has an upward spray angle. In this way, the six sets of nozzles 604 can have a larger dust suppression range when working. The outer contour line of the fan-shaped blade 602 is tangent to the outer contour line of the housing 601. The reverse force received by the nozzle 604 when spraying water can better drive the housing 601 to rotate.

[0028] The overall workflow of this utility model is as follows: When using the environmental dust removal device in this steel plant, water or dust removal liquid is first introduced into the lower end of the support pipe 2 through a pipeline. The water or dust removal liquid then passes through the support pipe 2 and the rotary joint 4 into the main pipeline 3. After entering the main pipeline 3, a portion of the water or dust removal liquid enters the self-rotating nozzle 6 and is sprayed out from the nozzle 604. Due to the reaction force of the water flow, the self-rotating nozzle 6 begins to rotate, achieving all-round spray dust removal. Another portion of the water or dust removal liquid enters the adjusting nozzle 7 through the five-way connector 9 and the connecting pipe 11 and is sprayed out from the adjusting nozzle 7. According to the actual dust removal requirements, the extension and retraction of the telescopic rod 806 is controlled by the control system to adjust the position of the lifting sleeve 801. Then, the spray angle of the adjusting nozzle 7 is adjusted by the transmission of the connecting rod 802, so that the adjusting nozzle 7 can accurately aim at the dust-generating area for spray dust removal. Furthermore, according to the dust concentration in the plant, the operation of the self-rotating nozzle 6 can be adjusted by controlling the opening and closing of the electric control valve 5, thereby achieving rapid dust reduction and resource conservation.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A steel plant environment-friendly dust removal device, characterized in that: Includes a base (1), on which a vertically arranged support pipe (2) is fixedly connected. The top end of the support pipe (2) is provided with a main pipe (3). The main pipe (3) and the support pipe (2) are fixedly connected by a swivel joint (4) through a flange. The swivel joint (4) connects the inner cavity of the main pipe (3) and the inner cavity of the support pipe (2). The middle part of the main pipe (3) is provided with an electric control valve (5). The upper end of the main pipe (3) is fixedly connected with a self-rotating nozzle (6). The main pipe (3) is connected with a connecting pipe (11). The connecting pipe (11) is located below the electric control valve (5). The other end of the connecting pipe (11) is fixedly connected with an adjusting nozzle (7). An angle adjustment component (8) is installed between the adjusting nozzle (7) and the main pipe (3).

2. The environmental dust removal device for steel plants according to claim 1, characterized in that: The angle adjustment assembly (8) includes a lifting sleeve (801), a connecting rod (802) is hinged on the lifting sleeve (801), the lower end of the connecting rod (802) is hinged to the adjusting nozzle (7), a connecting pin (803) is rotatably connected to the middle of the adjusting nozzle (7), a support block (804) is fixedly connected to the rotary joint (4), and a groove (805) is provided on the support block (804) for the connecting pin (803) to slide.

3. The environmental dust removal device for steel plants according to claim 2, characterized in that: The lifting sleeve (801) has a through hole that cooperates with the main pipe (3). The lifting sleeve (801) is slidably connected to the main pipe (3). A telescopic rod (806) is connected between the lifting sleeve (801) and the rotary joint (4).

4. A steel plant environment-friendly dust removal device according to claim 1, characterized in that: There are three sets of connecting pipes (11), and the three sets of connecting pipes (11) are connected to a five-way connector (9). The five-way connector (9) is fixedly connected to the main pipe (3). The connecting pipe (11) is a corrugated pipe.

5. The environmental dust removal device for steel plants according to claim 1, characterized in that: A baffle plate (10) is fixedly connected below the self-rotating nozzle (6), and the edge of the baffle plate (10) is provided with a downward inclined groove.

6. The environmental dust removal device for steel plants according to claim 1, characterized in that: The self-rotating nozzle (6) includes a housing (601), the inner cavity of the housing (601) is connected to the inner cavity of the main pipe (3), and a plurality of fan-shaped blades (602) distributed at equal angles are connected on the cylindrical surface of the housing (601). The fan-shaped blades (602) are provided with transition grooves (603), and the transition grooves (603) are provided with nozzles (604) that are connected to the inner cavity of the housing (601).

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