Movable blast furnace coal lance unblocking pulverized coal recycling device

Abstract

A movable blast furnace coal lance unblocking pulverized coal recycling device relates to the technical field of blast furnace ironmaking equipment and comprises a box body, two mounting holes are formed in the top of the box body, a coal inlet assembly A is arranged on one mounting hole, a water inlet assembly B is arranged on the other mounting hole, and a high-water-level overflow pipe is arranged on the middle upper portion of the box body. A water discharging pipe is arranged at the bottom of the box body 1, a filtering mechanism is arranged in the high-water-level overflow pipe, a wet powder recycling mode is adopted, pulverized coal is introduced into the box body with water, pulverized coal particles are mixed into water to be discharged, precipitated and recycled, and floating dust and discharged gas are filtered and recycled in the overflow process. The dual recovery mode not only improves the recovery efficiency, but also effectively prevents the dry pulverized coal from polluting the environment in the treatment process, and realizes environment-friendly operation.

Description

TECHNICAL FIELD

[0001] The utility model relates to a movable blast furnace coal gun blockage removing and pulverized coal recycling device and relates to the technical field of blast furnace ironmaking equipment. BACKGROUND

[0002] In the process of ironmaking production, the coal injection system of the blast furnace coal injection gun delivers the pulverized coal to the blast furnace through the pipeline, and then the pulverized coal is branched by the pulverized coal distributor and connected to the air supply devices of each tuyere of the blast furnace, and then the pulverized coal is injected into the blast furnace through the coal injection gun, so as to achieve the function of replacing part of the coke with the pulverized coal.

[0003] Due to the long pipeline, the blast furnace coal injection gun inevitably causes the pulverized coal to block during use, and timely blockage removal is required. In the actual blockage removal process, the pulverized coal is usually directly discharged on site, which causes unnecessary fuel waste, seriously pollutes the environment on site, and seriously harms the respiratory system of the operators. The patent technology with the publication number CN221397899U discloses a blast furnace coal injection gun blockage removing and pulverized coal recycling device, which includes a cart, the upper surface of the cart is fixedly connected with a support, the outer wall of the support is fixedly connected with a recycling tank, the inner wall of the recycling tank is slidably connected with a top plate, the top end of the top plate is fixedly connected with an inlet, the lower surface of the top plate is provided with a connecting assembly, the outer wall of the connecting assembly is provided with a filter bag, the outer wall of the recycling tank is fixedly connected with a motor one, the output end of the motor one is fixedly connected with a rotating rod one, and the outer wall of the rotating rod one is fixedly connected with left-right symmetrical eccentric wheels. In the utility model, the filter bag is used to filter the air discharged from the inlet, and the impurities and dust in the gas are filtered. The motor one is started to drive the rotating rod one to rotate, and the rotating rod one drives the eccentric wheels to rotate, so as to prevent the filter bag from being blocked and affecting the filtering effect. However, in the scheme, only the filter bag is used for filtering, and the knocking mechanism is used to prevent the pulverized coal from adhering. During the process of falling into the powder box, a large amount of pulverized coal still adheres to the lower rotating drive mechanism, which affects the driving effect after a long time. Only the dry pulverized coal is filtered and recycled, and a large amount of pulverized coal still adheres to the recycling tank. At the same time, when the equipment is overhauled, the pulverized coal will escape into the air under the action of pressure after the connecting pipes are opened, which affects the environment. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at the defects or deficiencies in the prior art, and provides a movable blast furnace coal gun blockage removing and pulverized coal recycling device. The wet powder recycling mode is adopted, the pulverized coal is introduced into the tank with water, the pulverized coal particles are mixed into the water and discharged for sedimentation and recycling, the floating dust is filtered and recycled during the overflow process, the double recycling mode not only improves the recycling efficiency, but also effectively prevents the dry pulverized coal from polluting the environment during the treatment process, and realizes the environmental protection operation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: it includes a box body 1, the top of the box body 1 is provided with two mounting holes, one mounting hole is provided with a coal inlet component A, the other mounting hole is provided with a water inlet component B, a high water level overflow pipe 9 is provided in the upper part of the box body 1, a drain pipe 6 is provided at the bottom of the box body 1, and a filter mechanism is provided inside the high water level overflow pipe 9.

[0006] Furthermore, the coal feeding assembly A includes a coal feeding pipe 2, a coal feeding valve 12, and a first quick connector 13. The bottom of the coal feeding pipe 2 is connected to and communicates with a mounting hole on the top of the housing 1. The bottom of the coal feeding valve 12 is sealed to the coal feeding pipe 2, and the top of the coal feeding valve 12 is sealed to the first quick connector 13.

[0007] Furthermore, the water inlet assembly B includes a water inlet pipe 3, a water inlet valve 10, and a second quick connector 11. The bottom of the water inlet pipe 3 is connected to another mounting hole on the top of the housing 1. The bottom of the water inlet valve 10 is sealed to the top of the water inlet pipe 3, and the top of the water inlet valve 10 is connected to the second quick connector 11.

[0008] Furthermore, a drain valve 7 is provided at the front end of the drain pipe 6.

[0009] Furthermore, a connecting short pipe 8 is provided at the front end of the drain valve 7.

[0010] Furthermore, the filtration mechanism is a filter cage or a filter bag.

[0011] Furthermore, explosion-proof baffles 14 are provided on the front and rear sides of the enclosure 1.

[0012] Furthermore, handles 4 are provided on the left and right sides of the box body 1.

[0013] Furthermore, the bottom of the box 1 is provided with casters 5.

[0014] Furthermore, a stirring mechanism is provided at the bottom of the box 1.

[0015] After adopting the above technical solution, the beneficial effects of this utility model are as follows: The wet powder recovery method is adopted, and the coal powder is introduced into the water-filled box. The coal powder particles are mixed in the water and discharged for sedimentation and recovery. The floating dust and the discharged gas are filtered and recovered during the overflow process. The dual recovery method not only improves the recovery efficiency, but also effectively prevents dry coal powder from polluting the environment during the treatment process, thus achieving environmentally friendly operation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 yes Figure 1 The second angle view;

[0019] Figure 3 yes Figure 1 The third-angle view.

[0020] Explanation of reference numerals in the attached drawings: 1. Box body; 2. Coal inlet pipe; 3. Water inlet pipe; 4. Handle; 5. Caster wheel; 6. Drain pipe; 7. Drain valve; 8. Connecting short pipe; 9. High water level overflow pipe; 10. Water inlet valve; 11. Second quick connector; 12. Coal inlet valve; 13. First quick connector; 14. Explosion-proof baffle. Detailed Implementation

[0021] See Figures 1-3As shown, the technical solution adopted in this specific embodiment is as follows: It includes a box body 1, with two mounting holes on the top of the box body 1. One mounting hole is equipped with a coal inlet component A, and the other mounting hole is equipped with a water inlet component B. A high-level overflow pipe 9 is installed in the upper part of the box body 1, and a drain pipe 6 is installed at the bottom of the box body 1. A filter mechanism is installed inside the high-level overflow pipe 9. In this embodiment, a device for separating and recovering pulverized coal and gas is provided. Before clearing the blockage of the blast furnace coal gun, water is injected into the box body through the water inlet component B. When the water level is higher than the high-level overflow pipe, the coal inlet component is opened to start clearing the blockage. Blast furnace pulverized coal and mixed gas enter the box body. Larger pulverized coal particles will directly enter the water, while gas and some floating dust will remain on and above the water surface and be discharged from the high-level overflow pipe. The high-level overflow pipe is connected to a hose and connected to a special sedimentation tank. Because a filter is installed inside the high-level overflow pipe... In this process, the mixed gas and floating dust are filtered out. The gas and some overflowing water enter a sedimentation tank for settling. The gas discharged from the sedimentation tank is free of dust and other pollutants, achieving environmentally friendly emissions. The remaining coal powder mixes with water and is drained after a period of time. Once the blockage is cleared, the coal inlet and water inlet components are shut off, and the drain pipe continuously discharges the mixed liquid, which also enters a specially designed sedimentation tank for settling. After the mixed liquid in the tank is emptied, the drain pipe is shut off. After the coal powder mixture has completely settled in the sedimentation tank, the clear water at the top is discharged, and the coal powder at the bottom is collected and then dried by natural ventilation or forced air drying. The dried coal powder can be recycled and reused. During the entire coal discharge process, due to the use of wet sedimentation, there are fewer attached substances in the tank, resulting in a higher coal discharge recycling rate, thereby improving resource reuse efficiency and reducing resource waste.

[0022] More specifically, the coal feeding assembly A includes a coal feeding pipe 2, a coal feeding valve 12, and a first quick connector 13. The bottom of the coal feeding pipe 2 is connected to an installation hole on the top of the housing 1 and communicates with the housing 1. The bottom of the coal feeding valve 12 is sealed to the coal feeding pipe 2, and the top of the coal feeding valve 12 is sealed to the first quick connector 13. In this embodiment, the first quick connector is provided so that it can be quickly connected to the blast furnace coal gun through a hose for coal discharge and unblocking. When unblocking, the coal feeding valve is opened to discharge coal powder and mixed gas into the housing, so that the coal powder is fully mixed with water in the housing.

[0023] More specifically, the water inlet component B includes a water inlet pipe 3, a water inlet valve 10, and a second quick connector 11. The bottom of the water inlet pipe 3 is connected to another mounting hole on the top of the housing 1. The bottom of the water inlet valve 10 is sealed to the top of the water inlet pipe 3, and the top of the water inlet valve 10 is connected to the second quick connector 11. In this embodiment, the second quick connector is connected to an industrial water connector to improve the connection speed. During operation, the water inlet valve can control the water injection speed. When the housing is empty, it can be opened to the maximum to increase the water injection speed. When water overflows from the high-level overflow pipe, the valve opening degree is reduced to control the overflow speed and ensure the mixing of coal powder and the dust filtration effect.

[0024] More specifically, the drain pipe 6 is equipped with a drain valve 7 at its front end. During the drainage process, the drainage speed can be effectively controlled by the drain valve. In the early stage, the drainage speed can be low, and in the middle and later stages, when more coal powder is discharged and mixed more evenly, the drainage speed can be increased.

[0025] More specifically, the drain valve 7 is equipped with a connecting short pipe 8 at its front end. The connecting short pipe is used to connect to the hose to guide the discharged mixture into a specially designed sedimentation tank.

[0026] More specifically, the filtration mechanism is a filter cage or a filter bag. Depending on the specific coal powder discharge situation, a filter cage or filter bag can be selected to obtain the best filtration effect and prevent clogging of the high water level overflow pipe. During operation, the high water level overflow pipe needs to be disassembled regularly to clean the filtration mechanism so as not to cause clogging in subsequent operations and to ensure the filtration effect.

[0027] More specifically, explosion-proof baffles 14 are provided on the front and rear sides of the enclosure 1, which are used to protect the enclosure.

[0028] More specifically, the box 1 is provided with handles 4 on the left and right sides, and the box 1 is provided with casters 5 at the bottom. In this embodiment, the device can be moved to any position by pulling the handles. It is understood that the casters are equipped with a locking mechanism to prevent the device from moving arbitrarily due to external force during operation, which would affect the unblocking operation.

[0029] More specifically, a stirring mechanism is provided at the bottom of the box 1. In this embodiment, the stirring mechanism in the box can increase the mixing speed, shorten the mixing time, and improve the mixing efficiency, thereby accelerating the recovery speed of coal powder.

[0030] The working principle of this utility model is as follows: During use, the equipment is moved to the work point by grasping handle 4. The industrial water pipe connector is connected to the water inlet component B, and the coal discharge pipe is connected to the coal inlet component A. Water is injected into the tank 1 by opening the water inlet valve 10 on the water inlet component B. After the water flows out from the high-level overflow pipe 9, the coal inlet valve 12 on the coal inlet component A is opened to introduce blast furnace pulverized coal or mixed gas. The pulverized coal mixes with the water, and the stirring mechanism is activated to fully mix the pulverized coal and water. During the pulverized coal injection process, the discharged gas and some lighter dust will float on the water surface. During the stirring process, because water is continuously injected into the tank 1, water above the high-level overflow pipe 9 will flow out and be connected to a special sedimentation tank via a connecting hose. Dust floating on the water surface will enter the high-level overflow pipe 9 and be filtered by the filter mechanism inside. The gas discharged from the sedimentation tank is dust-free. After stirring for a period of time, the drain valve 10 is opened, and the water mixed with coal powder is discharged from the drain pipe 6. The short pipe 8 is connected to the hose and enters the special sedimentation tank. After the blast furnace coal gun is cleared, the coal inlet valve 12 and the water inlet valve 10 are closed. After no more mixed liquid of coal powder and water is discharged from the short pipe 8, the drain valve 7 is closed. After the mixture of coal powder and water in the sedimentation tank has settled sufficiently, the clear water at the top is discharged, and the coal powder at the bottom is collected and then dried by natural ventilation or forced air drying. The dried coal powder can be recycled and reused.

[0031] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A mobile blast furnace coal lance unblocking and pulverized coal recovery and reuse device, characterized in that: It includes a housing (1), the top of which is provided with two mounting holes, one for a coal inlet assembly A and the other for a water inlet assembly B. A high-level overflow pipe (9) is provided in the upper part of the housing (1), and a drain pipe (6) is provided at the bottom of the housing (1). A filter mechanism is provided inside the high-level overflow pipe (9). The coal inlet assembly A includes a coal inlet pipe (2), a coal inlet valve (12), and a first quick connector (13). The bottom of the coal inlet pipe (2) is connected to one mounting hole at the top of the housing (1). The holes are connected and communicate with the box body (1). The bottom of the coal inlet valve (12) is sealed to the coal inlet pipe (2), and the top of the coal inlet valve (12) is sealed to the first quick connector (13). The water inlet assembly B includes a water inlet pipe (3), a water inlet valve (10), and a second quick connector (11). The bottom of the water inlet pipe (3) is connected to another mounting hole on the top of the box body (1). The bottom of the water inlet valve (10) is sealed to the top of the water inlet pipe (3), and the top of the water inlet valve (10) is connected to the second quick connector (11).

2. The mobile blast furnace coal lance unblocking and pulverized coal recycling device according to claim 1, characterized in that: A drain valve (7) is provided at the front end of the drain pipe (6).

3. The mobile blast furnace coal lance unblocking and pulverized coal recycling device according to claim 2, characterized in that: The drain valve (7) is provided with a connecting short pipe (8) at its front end.

4. The mobile blast furnace coal lance unblocking and pulverized coal recycling device according to claim 1, characterized in that: The filtration mechanism is a filter cage or a filter bag.

5. A mobile blast furnace coal lance unblocking and pulverized coal recycling device according to claim 1, characterized in that: The box (1) is equipped with explosion-proof baffles (14) on the front and rear sides.

6. A mobile blast furnace coal lance unblocking and pulverized coal recycling device according to claim 1, characterized in that: The box body (1) is provided with handles (4) on the left and right sides.

7. A mobile blast furnace coal lance unblocking and pulverized coal recycling device according to claim 1, characterized in that: The bottom of the box (1) is equipped with casters (5).

8. A mobile blast furnace coal lance unblocking and pulverized coal recycling device according to claim 1, characterized in that: A stirring mechanism is provided at the bottom of the box (1).

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