Online slag wool cleaning device

Abstract

The invention provides an online slag wool cleaning device which comprises a main body frame, a screen and a lifting mechanism are arranged on the main body frame, and the screen is used for filtering slag wool online; wherein the lifting mechanism is connected with a scraping plate, the scraping plate is located on the side, where the slag wool is reserved, of the screen, and the lifting mechanism drives the scraping plate to remove the slag wool. The problems that an existing slag wool cleaning scheme is poor in cleaning effect and online cleaning cannot be achieved can be solved.

Description

Technical Field

[0001] This invention relates to the field of blast furnace production technology, and more specifically, to an online slag wool cleaning device. Background Technology

[0002] Dry granulation technology of blast furnace slag is a key technology for energy conservation, emission reduction and efficient resource utilization in the steel industry. However, the slag wool generated during the granulation process seriously affects the stable operation of the equipment. For example, the generated slag wool can easily cause blockage of the airflow channels of subsequent equipment, increase maintenance costs and restrict the promotion and application of dry granulation technology. Especially under harsh working conditions such as high temperature and high dust, the generated slag wool can easily cause damage to equipment parts and make it difficult to guarantee the stability of the entire production system.

[0003] Existing slag wool cleaning devices often use gravity dust collectors and cyclone dust collectors. However, neither of these dust collectors is effective in treating slag wool produced by dry granulation of blast furnace slag. Specifically, in actual use, slag wool will accumulate in the dust collector, affecting airflow and dust removal efficiency, and making cleaning difficult. Furthermore, if slag wool enters subsequent equipment, it will block the channels, leading to production interruptions.

[0004] In addition, most existing slag wool cleaning devices cannot remove slag wool online, requiring production to be stopped for cleaning, which affects production efficiency.

[0005] Based on the aforementioned technical issues, there is an urgent need for a solution that can clean slag wool online with good cleaning results. Summary of the Invention

[0006] In view of the above problems, the purpose of this invention is to provide an online slag wool cleaning device to solve the problems of poor cleaning effect and inability to achieve online cleaning in existing slag wool cleaning solutions.

[0007] The online slag wool cleaning device provided by this invention includes a main frame, on which a screen and a lifting mechanism are arranged. The screen is used for online filtering of slag wool. A scraper is connected to the lifting mechanism. The scraper is located on the side of the screen where the slag wool is stored. The lifting mechanism drives the scraper to remove the slag wool.

[0008] Alternatively, the lifting mechanism may include a lead screw and a lifting platform; wherein the lead screw is fixed to the main frame, and the lifting platform is mounted on the lead screw; and... A crossbeam is fixed at the lower end of the elevator, and a guide assembly is connected below the crossbeam. The end of the guide assembly away from the crossbeam is connected to the scraper.

[0009] Alternatively, the guide assembly may include a guide rod connected to the lower end of the crossbeam, with a scraper guide carriage located at the end of the guide rod away from the crossbeam, and the scraper being located at the bottom of the scraper guide carriage.

[0010] Alternatively, guide wheels can be provided on both sides of the scraper guide vehicle, and guide rails adapted to the guide wheels can be provided on the main frame.

[0011] Alternatively, a connecting seat is fixed on the scraper guide car, an elongated hole is provided on the connecting seat, and a connecting post is provided at the end of the guide rod away from the crossbeam, which is clearance-fitted with the elongated hole. The guide rod is connected to the scraper guide car through the connecting post and the elongated hole.

[0012] Alternatively, an optional solution is to provide a slide valve below the scraper, and a jaw valve below the slide valve.

[0013] Alternatively, a screen support can be detachably connected to the main frame, with the screen mounted on the screen support.

[0014] Alternatively, a flange can be provided on the main frame, and the main frame can be fixed inside the return air duct by the flange.

[0015] Alternatively, two lead screws can be provided, with a lifting mechanism mounted on each of the two lead screws, and both lifting mechanisms connected to the crossbeam; and... The two elevators move synchronously.

[0016] Alternatively, the lifting mechanism may also include a motor; and, Both of the aforementioned elevators are connected to the output shaft of the motor to achieve synchronous movement.

[0017] Compared with the prior art, the online slag wool cleaning device provided by the present invention has the following advantages: By installing a screen inside the hot air duct of the dry granulation system, slag wool inside the hot air duct can be filtered out in a timely manner. By setting up a lifting mechanism and a scraper, the lifting mechanism can drive the scraper to remove the slag wool online. The structure is simple, safe and reliable, and can effectively solve the problem of slag wool affecting the normal operation of the equipment, ensure the stable operation of the dry granulation system, promote the widespread application of blast furnace slag dry granulation technology, and promote energy conservation, emission reduction and sustainable development in the steel industry.

[0018] To achieve the foregoing and related objectives, one or more aspects of the invention include the features which will be described in detail below and specifically pointed out in the claims. The following description and accompanying drawings illustrate certain exemplary aspects of the invention. However, these aspects indicate only a few of the various ways in which the principles of the invention can be used. Furthermore, the invention is intended to include all such aspects and their equivalents. Attached Figure Description

[0019] Other objects and results of the invention will become more apparent and readily understood with reference to the following description taken in conjunction with the accompanying drawings and the contents of the claims, and with a more complete understanding of the invention. In the drawings: Figure 1 A side view of an online slag wool cleaning device provided according to an embodiment of the present invention; Figure 2 This is a front view of an online slag wool cleaning device provided according to an embodiment of the present invention; Figure 3 This is a partial enlarged side view of the online slag wool cleaning device provided according to an embodiment of the present invention near the scraper guide vehicle; Figure 4 This is a partial enlarged front view of the connecting seat accessory of the online slag wool cleaning device provided in an embodiment of the present invention; Reference numerals: 1. Main frame; 2. Frame cover; 3. Lifting machine; 4. Motor; 5. Scraper guide car; 6. Crossbeam; 7. Screen support; 8. Screen; 9. Scraper; 10. Connecting seat; 11. Slide valve; 12. Jaw valve; 13. Guide rod; 14. Guide rail; 15. Guide wheel; 16. Screw; 17. Connecting column; 18. Oblong hole. Detailed Implementation

[0020] In the following description, numerous specific details are set forth for illustrative purposes and to provide a thorough understanding of one or more embodiments. However, it will be apparent that these embodiments may also be implemented without these specific details. In other instances, well-known structures and devices are shown in block diagram form for ease of description of one or more embodiments.

[0021] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate structural component; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0022] The specific structure of the online slag wool cleaning device provided by this invention is described in detail below.

[0023] Figure 1 The side view of the online slag wool cleaning device provided according to an embodiment of the present invention is shown. Figure 2 The front view of the online slag wool cleaning device provided according to an embodiment of the present invention is shown. Figure 3 This image shows a partially enlarged side view of the online slag wool cleaning device provided according to an embodiment of the present invention, near the scraper guide vehicle. Figure 4 This is a magnified view of the main view of the connecting seat accessory of the online slag wool cleaning device provided in an embodiment of the present invention.

[0024] Combination Figures 1 to 4 As shown in the figure, the online slag wool cleaning device provided by the present invention includes a main frame 1 as the main support body. All components in the online slag wool cleaning device are mounted on the main frame 1, which serves as the support carrier.

[0025] Specifically, to achieve online cleaning of slag wool in the dry granulation system using the online slag wool cleaning device provided by this invention, the main frame 1 is installed inside the hot air duct of the dry granulation system; and a screen 8 and a lifting mechanism are installed on the main frame 1. The screen 8 is used for online filtration of slag wool; wherein, a scraper 9 is connected to the lifting mechanism, and the scraper 9 is located on the side of the screen 8 where the slag wool is stored. In actual use, the amount of slag wool remaining on one side (front side) of the screen 8 is determined according to the pressure difference before and after the screen 8. When the amount of slag wool filtered and stored on one side of the screen 8 reaches a certain amount (when cleaning is required), the scraper is driven by the lifting mechanism to scrape off and remove the slag wool on one side of the screen 8; the scraped-off slag wool falls into the collection chamber below the scraper and is processed periodically.

[0026] In a specific embodiment of the present invention, in order to enable the lifting mechanism to drive the scraper 9 to clean the slag wool, the lifting mechanism may include a motor, a lead screw 16, and a lifting machine 3; wherein, the motor is used to provide power, the lead screw 16 is fixed on the main frame 1, the lifting machine 3 is set on the lead screw 16, and the lifting machine 3 is connected to the output shaft of the motor 4; in actual use, when the motor 4 drives the lead screw in the lifting machine 3 to rotate, based on the adaptation relationship between the lead screw in the lifting machine 3 and the lead screw 16, the lifting machine will move up and down on the lead screw 16, thereby driving the scraper 9 to move up and down, so as to scrape and clean the slag wool.

[0027] Furthermore, to connect the elevator and the scraper, a crossbeam 6 is fixed at the lower end of the elevator 3, and a guide assembly is connected below the crossbeam 6. The end of the guide assembly away from the crossbeam 6 is connected to the scraper. By setting the crossbeam 6 and the guide assembly, the stability of the elevator 3 driving the scraper movement can be significantly improved.

[0028] Specifically, the guiding assembly may include a guide rod 13 connected to the lower end of the crossbeam 6, and a scraper guide trolley 5 is provided at the end of the guide rod 13 away from the crossbeam 6, with a scraper 9 located at the bottom of the scraper guide trolley 5. In actual use, the elevator drives the guide rod 13 to move up and down through the crossbeam 6, and the guide rod 13 drives the scraper guide trolley 5 and its scraper to move up and down, so as to scrape off the slag wool.

[0029] Furthermore, multiple guide wheels 15 can be set on both sides of the scraper guide carriage 5 (for example, 6 guide wheels 15 on each side, for a total of 12 guide wheels 15). Multiple guide rails 14 adapted to the guide wheels 15 are set on both sides of the main frame 1 on the scraper guide carriage 5 (for example, 6 guide rails 14, 3 guide rails 14 on each side, with two guide wheels 15 set vertically within each guide rail 14). Through the adaptation relationship between the guide rails 14 and the guide wheels 15, it can be ensured that the scraper guide carriage 5 moves smoothly when pulled up and down by the lifting mechanism without jamming. It should be noted that the scraper will be subjected to overturning moment when removing slag and cotton. By setting multiple guide wheels 15 adapted to the guide rails 14 on both sides of the scraper guide carriage 5, this overturning moment can be effectively resisted.

[0030] It should be noted that the scraper 9 can be designed to be replaceable, meaning that the scraper 9 and the scraper guide 5 can be detachably connected, and the scraper 9 can be adjusted to move back and forth. In actual use, when the length of the generated slag wool is large, to ensure the cleaning effect of the slag wool, the scraper 9 made of steel plate is used instead. The scraper 9 made of steel plate experiences relatively less wear and can extend the maintenance cycle. When the length of the slag wool is small, the scraper 9 made of wire brush can be used instead, as the scraper 9 made of wire brush can clean up the fine slag wool.

[0031] Furthermore, to achieve stable movement of the crossbeam 6, two (or more) lead screws 16 can be installed, each with a lifting mechanism. Both (or more) lifting mechanisms are connected to the crossbeam 6. Moreover, both (or more) lifting mechanisms are connected to the output shaft of the same motor 4 to achieve synchronous movement. It should be noted that since the two lifting mechanisms inevitably experience forces from multiple directions during operation, the lead screws 16 are prone to damage. Therefore, the base of one lead screw 16 (not shown in the figure) can be connected to a connecting plate with elongated holes 18 in the x and y directions to compensate for the x and y directions of the lead screw 16 and prevent damage to the lead screw 16.

[0032] Furthermore, it should be noted that the online slag wool cleaning device provided by this invention is installed inside the return air duct (i.e., the hot air duct). The temperature at this location is approximately 500°C during system operation. However, in actual use, since the blast furnace requires regular maintenance, the temperature at this location will drop to room temperature during blast furnace maintenance. Due to the large temperature difference before and after this location, and the significant deformation of some components in the online slag wool cleaning device provided by this invention due to thermal expansion, for example, the scraper guide car 5 deforms significantly due to temperature, which can cause the guide rod 13 to bend to a certain extent. To ensure the normal operation of the online slag wool cleaning device provided by this invention, a connecting seat 10 can be fixed on the scraper guide trolley 5, and an elongated hole 18 can be opened on the connecting seat 10. A connecting post 17 that is clearance-fitted with the elongated hole 18 can be set at the end of the guide rod 13 away from the crossbeam 6. The guide rod 13 is connected to the scraper guide trolley 5 through the connecting post 17 and the elongated hole 18. A guide elongated hole 18 for the guide rod 13 to pass through is added in the frame cover 2. With this setting, it can be ensured that the guide rod 13 will not deform much, and the scraper guide trolley 5 can move up and down smoothly.

[0033] In another specific embodiment of the present invention, in order to collect the scraped slag wool through the collection chamber, a gate valve 11 can be installed between the scraper and the collection chamber, and a jaw valve 12 can be installed at the bottom of the collection chamber. In actual use, the gate valve 11 can realize the opening and closing of the channel between the collection chamber and the hot air duct. When the scraper scrapes and cleans the slag wool, the gate valve 11 is opened, and the scraped slag wool enters the collection chamber through the gate valve 11. The jaw valve 12 at the bottom of the collection chamber compresses the collected slag wool into a pile and discharges it from the middle of the bottom.

[0034] In another preferred embodiment of the present invention, a screen support 7 can be detachably connected to the main frame 1, and the screen is detachably connected to the screen support 7. In actual use, when the screen is severely worn, the entire screen support 7 can be removed from the main frame 1, and a spare screen can be installed on the screen support 7, effectively reducing maintenance time. Furthermore, in actual use, screens of different mesh sizes can be installed on the screen support 7 according to the amount of slag wool, to achieve effective filtration of the slag wool.

[0035] It should be noted that the screen provided by this invention can be made of 15CrMo material, which has excellent heat resistance and a long service life in high-temperature environments without affecting the overall performance of the device.

[0036] In addition, to ensure the stability of the connection between the main frame 1 and the return air duct, a flange can be installed on the main frame 1. The main frame 1 is fixed inside the return air duct through the flange. During maintenance, the entire main frame 1 can be directly removed to facilitate the maintenance of each component.

[0037] As can be seen from the above specific embodiments, the online slag wool cleaning device provided by the present invention has at least the following advantages: 1. By installing a screen inside the hot air duct of the dry granulation system, the slag wool inside the hot air duct can be filtered out in time. By setting up a lifting mechanism and a scraper, the lifting mechanism can drive the scraper to remove the slag wool online. 2. With its simple structure and reliable safety, it can effectively solve the problem of slag wool affecting the normal operation of equipment, ensure the stable operation of the dry granulation system, promote the widespread application of blast furnace slag dry granulation technology, and promote energy conservation, emission reduction and sustainable development in the steel industry; 3. Through the matching relationship between the guide rail and the guide wheel, it can be ensured that the scraper guide car moves smoothly when it is pulled up and down by the lifting mechanism, without jamming.

[0038] As per the above reference Figures 1 to 4 The online slag wool cleaning device according to the present invention is described by way of example. However, those skilled in the art should understand that various modifications can be made to the online slag wool cleaning device proposed in the present invention without departing from the scope of the invention. Therefore, the scope of protection of the present invention should be determined by the contents of the appended claims.

Claims

1. An online slag wool cleaning device, characterized in that, The system includes a main frame, on which a screen and a lifting mechanism are installed. The screen is used for online filtration of slag wool. A scraper is connected to the lifting mechanism. The scraper is located on the side of the screen where the slag wool is stored. The lifting mechanism drives the scraper to remove the slag wool.

2. The online slag wool cleaning device as described in claim 1, characterized in that, The lifting mechanism includes a lead screw and a lifting mechanism; wherein the lead screw is fixed to the main frame, and the lifting mechanism is mounted on the lead screw; and... A crossbeam is fixed at the lower end of the elevator, and a guide assembly is connected below the crossbeam. The end of the guide assembly away from the crossbeam is connected to the scraper.

3. The online slag wool cleaning device as described in claim 2, characterized in that, The guiding assembly includes a guide rod connected to the lower end of the crossbeam, and a scraper guide trolley is provided at the end of the guide rod away from the crossbeam, with the scraper disposed at the bottom of the scraper guide trolley.

4. The online slag wool cleaning device as described in claim 3, characterized in that, Guide wheels are provided on both sides of the scraper guide vehicle, and guide rails adapted to the guide wheels are provided on the main frame.

5. The online slag wool cleaning device as described in claim 3, characterized in that, A connecting seat is fixed on the scraper guide car, and an elongated hole is provided on the connecting seat. A connecting post is provided at the end of the guide rod away from the crossbeam, which is clearance-fitted with the elongated hole. The guide rod is connected to the scraper guide car through the connecting post and the elongated hole.

6. The online slag wool cleaning device as described in claim 5, characterized in that, Two lead screws are provided, and a lifting mechanism is installed on each of the two lead screws. Both lifting mechanisms are connected to the crossbeam; and... The two elevators move synchronously.

7. The online slag wool cleaning device as described in claim 6, characterized in that, The lifting mechanism also includes a motor; and... Both of the aforementioned elevators are connected to the output shaft of the motor to achieve synchronous movement.

8. The online slag wool cleaning device as described in claim 1, characterized in that, A screen support is detachably connected to the main frame, and the screen is mounted on the screen support.

9. The online slag wool cleaning device as described in claim 1, characterized in that, A flange is provided on the main frame, and the main frame is fixed inside the return air duct through the flange.

10. The online slag wool cleaning device according to any one of claims 1 to 9, characterized in that, A slide gate valve is provided below the scraper, and a jaw valve is provided below the slide gate valve.

Images