Movable dust collection device for titanium sponge reduction furnace

Abstract

The utility model provides a mobile dust collection device for sponge titanium reduction furnace, including the dust collection cover, flue gas pipeline, support frame and mobile dust collection subassembly, the dust collection cover passes through flue gas pipeline and mobile dust collection subassembly intercommunication, mobile dust collection subassembly bottom is connected with the guide rail in sliding mode, the guide rail is provided in the workshop, and the support frame is connected with the guide rail. The top of the movable dust collecting assembly is rotatably connected with one end of the supporting frame, the other end of the supporting frame is connected with the lifting hook, and the flue gas pipeline is connected with or separated from the lifting hook. According to the movable dust collecting device for the titanium sponge reduction furnace, the safety of treating redundant magnesium chloride melt in the reaction process can be improved, the magnesium chloride melt and a large amount of volatile gas in the magnesium chloride melt can be collected in time, overflow leakage of magnesium chloride is avoided, the environment, equipment and lines in a workshop are protected, and the service life of the furnace is prolonged. And the safety of operators in a workshop is effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of nonferrous metal smelting equipment, and in particular to a mobile dust collecting device for a sponge titanium reduction furnace. Background Art

[0002] At present, most of the industrial production of titanium sponge at home and abroad adopts the Koll method to prepare titanium sponge. The production principle is to reduce the liquid TiCl4 introduced by hot liquid magnesium at 800-850°C in the hot end reactor to generate titanium sponge and magnesium chloride. During the titanium sponge reduction process, as the reaction proceeds, the accumulation of magnesium chloride hinders the reduction reaction and destroys the continuity of titanium sponge production. Therefore, it is necessary to discharge the excess magnesium chloride in time to restore the original reaction rate.

[0003] There is a magnesium chloride discharge pipe on the inner wall of the reactor leading to the bottom of the reactor, and the generated magnesium chloride is discharged from the reactor in time through the magnesium chloride pipe. At present, the way to discharge magnesium chloride is direct discharge. During the discharge process, there is a certain gap between the tail pipe and the ladle, which causes the magnesium chloride melt to be exposed to the air. A large amount of volatile gases in the melt are released into the air. These thick fumes are a mixture of argon and low-valent titanium produced by incomplete reaction. Hydrolysis will produce corrosive liquids, which not only pollutes the environment, but also damages the equipment and lines in the workshop, affecting the normal production of the workshop; in addition, operators are exposed to this environment for a long time, which may trigger the occurrence of occupational diseases. Taking a 5t furnace as the research object, each furnace needs to discharge at least 20 tons of magnesium chloride to produce sponge titanium, and as the furnace type expands, the emission volume gradually increases, thereby aggravating the pollution of the workshop environment. Therefore, studying how to improve the dust collection efficiency of the discharged excess magnesium chloride is one of the problems to be solved.

[0004] Patent CN212550956U mentions a fume capture device for a ladle refining furnace, the device comprising a fume capture hood and a mounting frame, the fume capture hood comprising a fixed fume hood and a movable fume hood, the top plate of the fixed fume hood is provided with a fume collecting pipe, a telescopic pipe, a conveying pipe and a cyclone dust collector in sequence, an exhaust mechanism is installed inside the fixed fume hood, the movable fume hood is movably installed on the fixed fume hood, a lifting mechanism is installed on the top of the movable fume hood, a side plate is provided on each side of the bottom of the movable fume hood, and an opening and closing structure is provided between each side plate and the lower overlapping flange of the corresponding movable fume hood; the installation The frame includes two slide rails, and a slide is installed on each of the two opposite sides of the fixed smoke hood. A stepper motor is installed between the two ends of the two slides, and pulleys are installed on the rotating shafts at both ends of the stepper motor. The pulleys are slidably installed on the slide rails, so that the smoking range can be adjusted. However, in the smoke capture device, the movable smoke hood can be moved up and down under the action of the lifting mechanism, and the setting of the side panels can expand the smoke receiving port according to the size of the smoke. However, the structure of the smoke capture device is relatively complex and the moving range is limited, and the corresponding smoke capture settings cannot be made for the refining furnaces in the entire workshop. Utility Model Content

[0005] In view of this, the utility model aims to propose a mobile dust collecting device for a sponge titanium reduction furnace to solve the problems in the prior art that the dust collection hood 1 side is poor in the process of discharging magnesium chloride in the reduction workshop, the top of the magnesium chloride collection bucket is difficult to cover, and the magnesium chloride melt and a large amount of volatile gases therein are easily exposed to the air, causing workshop environmental pollution, equipment and line damage, and affecting the health of operators; thereby achieving the purpose of improving the dust collection effect on the dust collection hood side, improving the safety of handling excess magnesium chloride melt during the reaction process, timely collecting the magnesium chloride melt and a large amount of volatile gases therein, avoiding magnesium chloride leakage, protecting the environment, equipment and lines in the workshop, and effectively ensuring the safety of operators in the workshop.

[0006] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0007] The utility model relates to a mobile dust collecting device for a sponge titanium reduction furnace, comprising a dust collecting hood, a flue gas duct, a support frame and a mobile dust collecting assembly. The dust collecting hood is connected to the mobile dust collecting assembly through the flue gas duct, the bottom of the mobile dust collecting assembly is slidably connected to a guide rail, the guide rail is arranged in a workshop, the top of the mobile dust collecting assembly is rotatably connected to one end of the support frame, the other end of the support frame is connected to a hook, and the flue gas duct is connected to or separated from the hook.

[0008] Furthermore, the dust collecting hood includes ribs and a cover surface, wherein the ribs are arranged on the inner side of the cover surface, and both the ribs and the cover surface are movably connected to one end of the flue gas duct away from the movable dust collecting assembly.

[0009] Furthermore, the material of the umbrella rib is angle steel.

[0010] Furthermore, the material of the cover is a lightweight flame retardant, high temperature resistant and fireproof cloth.

[0011] Furthermore, the mobile dust collecting assembly includes a dust collecting fan, a fixed frame and a rolling pulley. The dust collecting fan is arranged inside the fixed frame, the rolling pulley is arranged at the bottom of the fixed frame, the top of the fixed frame is connected to the support frame, the dust collecting fan is connected to the flue gas duct, and the rolling pulley is connected to the guide rail in a slidable manner.

[0012] Furthermore, the mobile dust collecting assembly also includes a motor, which is arranged on the outer side wall of the fixed frame, the motor is arranged above the guide rail, and the output shaft of the motor is connected to the driving shaft of the sliding roller.

[0013] Furthermore, the support frame includes a support rod and a rotating shaft, one end of the support rod is rotatably connected to the top of the mobile dust collecting assembly through the rotating shaft, and the other end of the support rod is connected to the hook.

[0014] Furthermore, at least two guide rails are provided.

[0015] Furthermore, at least three ribs are provided.

[0016] Furthermore, the cover surface is provided with at least one layer.

[0017] Compared with the prior art, the mobile dust collecting device for a titanium sponge reduction furnace described in the utility model has the following beneficial effects:

[0018] By setting the device, the dust collection effect on the dust hood side can be improved, the safety of handling excess magnesium chloride melt during the reaction process can be improved, the magnesium chloride melt and a large amount of volatile gas therein can be collected in time, magnesium chloride leakage can be avoided, the environment, equipment and lines in the workshop can be protected, and the safety of operators in the workshop can be effectively guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of the first form of the mobile dust collecting device;

[0021] Figure 2 It is a schematic diagram of the overall structure of the second form of the mobile dust collecting device.

[0022] Explanation of the reference numerals: 1. dust collecting hood; 11. ribs; 12. cover surface; 2. flue gas duct; 3. support frame; 31. support rod; 32. rotating shaft; 4. mobile dust collecting assembly; 41. dust collecting fan; 42. fixed frame; 43. rolling pulley; 44. motor; 5. guide rail; 6. hook. DETAILED DESCRIPTION

[0023] The following will use the terms commonly used by those skilled in the art to convey the essence of their work to other technical personnel in the art to describe the utility model concepts of the present disclosure. However, these utility model concepts can be embodied in many different forms and should not be considered as limited to the embodiments described herein.

[0024] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0025] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0026] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0027] In the prior art, during the reduction process of titanium sponge, as the reaction proceeds, the accumulation of magnesium chloride hinders the reduction reaction and destroys the continuity of titanium sponge production. A commonly used treatment method is to have a magnesium chloride discharge pipe on the inner wall of the reactor leading to the bottom of the reactor, and the generated magnesium chloride is discharged from the reactor in time through the magnesium chloride pipe. At present, the method of discharging magnesium chloride is direct discharge. During the discharge process, there is a certain gap between the tail pipe and the ladle, resulting in the magnesium chloride melt being exposed to the air.

[0028] In order to solve the problems in the prior art that the dust collection hood side dust collection effect is poor during the downward discharge of magnesium chloride in the steaming workshop, the top of the magnesium chloride collecting bucket is difficult to cover, and the magnesium chloride melt and a large amount of volatile gases therein are easily exposed to the air, causing workshop environmental pollution, equipment and line damage, and affecting the health of operators; this embodiment proposes a mobile dust collection device for a sponge titanium reduction furnace, including a dust collection hood 1, a flue gas duct 2, a support frame 3 and a mobile dust collection assembly 4, the dust collection hood 1 is connected to the mobile dust collection assembly 4 through the flue gas duct 2, the bottom of the mobile dust collection assembly 4 is connected to the guide rail 5 in a slidable manner, the guide rail 5 is arranged in the workshop, and the top of the mobile dust collection assembly 4 is connected to one end of the support frame 3 in a slidable manner. The support frame 3 is connected in a rotatable manner, the other end of the support frame 3 is connected to the hook 6, and the flue gas duct 2 is connected or separated from the hook 6. In the present embodiment, the hook 6 is used to play the role of hanging support for the flue gas duct 2, so that the smoke gas duct 2 can be driven to rotate at a desired angle during the manual control of the rotation of the support frame 3, thereby realizing dust removal at different positions of the dust collecting device in the plane, which is beneficial to improving the dust collecting efficiency of the dust collecting device, increasing the dust collecting range of the dust collecting device, and improving the working flexibility of the dust collecting device. In the present embodiment, the end of the smoke duct 2 away from the dust collecting hood 1 can also be connected to the mobile dust collecting assembly 4 through the support frame 3, so as to improve the stability of the connection between the smoke duct 2 and the mobile dust collecting assembly 4.

[0029] By coordinating the mobile dust collecting assembly 4, the guide rail 5 and the support frame 3, the dust collection effect on the dust hood side can be improved, the safety of handling excess magnesium chloride melt during the reaction process can be improved, the magnesium chloride melt and a large amount of volatile gas therein can be collected in time, magnesium chloride leakage can be avoided, the environment, equipment and lines in the workshop can be protected, and the safety of operators in the workshop can be effectively guaranteed.

[0030] The dust hood 1 includes an umbrella rib 11 and a cover surface 12. The umbrella rib 11 is arranged on the inner side of the cover surface 12. The umbrella rib 11 and the cover surface 12 are both connected to the end of the flue gas duct 2 away from the mobile dust collecting assembly 4 in a movable manner. The material of the umbrella rib 11 is angle steel; the material of the cover surface 12 is a lightweight flame retardant and high temperature fireproof cloth; in this embodiment, the shape of the dust hood 1 is an umbrella structure, and the dust hood 1 includes two working conditions. The first working condition is the working state of the dust hood 1. The dust hood 1 is opened, and the umbrella rib 11 drives the cover surface 12 to unfold, and a frustum or truncated cone structure is formed between the umbrella rib 11 and the cover surface 12. The second working condition is the closed state of the dust hood 1, that is, the dust hood 1 is not working, the umbrella rib 11 drives the cover surface 12 to shrink, and a columnar structure is formed between the umbrella rib 11 and the cover surface 12, which is conducive to reducing the impact of the mobile dust collecting device on the normal operation of the workshop.

[0031] The coordinated arrangement of the ribs 11 and the cover surface 12 in the dust hood 1 is conducive to reducing the space occupied by the mobile dust collecting device, making it easy to store and greatly improving the dust collecting efficiency. The dust hood 1 adopts an umbrella-shaped structure, which does not affect the activity range of workshop personnel after being retracted, thus facilitating normal production in the workshop.

[0032] The mobile dust collecting assembly 4 includes a dust collecting fan 41, a fixed frame 42 and a rolling pulley 43. The dust collecting fan 41 is arranged inside the fixed frame 42, the rolling pulley 43 is arranged at the bottom of the fixed frame 42, the top of the fixed frame 42 is connected to the support frame 3, the dust collecting fan 41 is connected to the flue gas duct 2, or the dust collecting fan 41 is connected to the flue gas duct 2 through the support frame 3, so as to facilitate the collection of excess dust in the dust collecting hood 1 through the flue gas channel 2, and the rolling pulley 43 is connected to the guide rail 5 in a sliding manner. Among them, at least two guide rails 5 are provided, and a groove is provided inside the guide rail 5, and the rolling pulley 43 is embedded in or separated from the inner side of the groove of the guide rail 5. The guide rail 5 is arranged on the ground in the steaming workshop, and the two ends of the guide rail 5 are respectively fitted with two parallel walls in the workshop. The mobile dust collecting assembly 4 also includes a motor 44, which is arranged on the outer wall of the fixed frame 42, and the motor 44 is arranged above the guide rail 5. The output shaft of the motor 44 is connected to the driving shaft of the rolling pulley 43; at least 4 rolling pulleys 43 are arranged, and two rolling pulleys 43 form a group. The two rolling pulleys 43 are connected by a connecting shaft. The two groups of rolling pulleys 43 are respectively arranged on the left and right sides of the bottom of the fixed frame 42, and the connecting shaft between the two groups of rolling pulleys 43 is connected by one end of the driving shaft, and the other end of the driving shaft is connected to the output shaft of the motor 44, which is used to facilitate the sliding of the mobile dust collecting assembly 4 along the direction of the guide rail 5 under the action of the motor 44. At least three umbrella ribs 11 are arranged; and at least one layer of the cover 12 is arranged. In this embodiment, the smoke channel 2 is a bamboo-shaped smoke duct, which is conducive to improving the wear resistance, durability and bending resistance of the smoke duct 2, and can also improve the compression resistance of the smoke duct 2.

[0033] The mobile dust collecting assembly 4 can be freely moved on the guide rail 5 by using the rolling pulley 43 below, so that dust removal is not limited to the fixed position of the traditional solution. The mobile dust collecting hood 1, the support frame 3 and the mobile dust collecting assembly 4 can be used to realize dust removal in various coordinates of the plane. When in use, the motor 44 is used to control the start and stop of the mobile dust collecting assembly 4, which saves manpower and facilitates the control of the movement and stop of the mobile dust collecting device, so that the mobile dust collecting device can be moved at will in places such as workshops for dust removal. In addition, through the setting of the motor 44, the control circuit controls the start and stop of the walking motor 44 when in use, and the horizontal movement of the mobile dust collecting device can be controlled electrically, which is beneficial to saving manpower and facilitating the dust collection operation of the dust collecting device. It is also beneficial to control the moving length of the mobile dust collecting device on the guide rail 5, improve the accuracy of the motion control of the dust collecting device, and then facilitate the movement of the guide rail 5 to enable the dust collecting device to be moved at will in the workshop for dust removal, so as to realize the collection and treatment of the flue gas on the side and above the collecting bucket, avoid disorderly emission of flue gas, and avoid magnesium chloride leakage.

[0034] The support frame 3 includes a support rod 31 and a rotating shaft 32. One end of the support rod 31 is rotatably connected to the top of the mobile dust collecting assembly 4 through the rotating shaft 32, and the other end of the support rod 31 is connected to the hook 6, which is used to facilitate manual control of the rotation of the support rod 31, drive the hook 6 to rotate, and then realize the dust collecting hood 1 to rotate to a desired angle through the flue gas duct 2.

[0035] Through the action of the rotating shaft 32, the support rod 31 can be rotated at a certain angle. The specific angle is set as required. By hanging the hook 6 on the outer wall of the support frame 3, the smoke channel 2 can be freely rotated under the traction of the hook 6.

[0036] Preferably, since the mobile dust collecting device of the present application can be moved at will, it is only necessary to arrange one device on each side of the workshop aisle to meet the flue gas collection needs when reducing magnesium chloride on the grate on that side. The dust collecting hood 1 adopts an umbrella-shaped structure, which is easy to store and occupies a small area after being retracted, does not affect the activity range of workshop personnel, and is convenient for normal production in the workshop.

[0037] Example 1:

[0038] In a titanium sponge production plant, the device of the present invention was experimentally applied in the process of discharging magnesium chloride in the steam recovery workshop. The treated exhaust gas achieved dust-free emission, purified the internal environment of the workshop, avoided the adverse effects on the health of employees caused by disorderly emission of flue gas, and fully demonstrated its superiority.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mobile dust collecting device for a titanium sponge reduction furnace, characterized in that: The invention comprises a dust collecting hood (1), a flue gas duct (2), a support frame (3) and a mobile dust collecting assembly (4); the dust collecting hood (1) is connected to the mobile dust collecting assembly (4) through the flue gas duct (2); the bottom of the mobile dust collecting assembly (4) is connected to a guide rail (5) in a slidable manner; the guide rail (5) is arranged in a workshop; the top of the mobile dust collecting assembly (4) is connected to one end of the support frame (3) in a rotatable manner; the other end of the support frame (3) is connected to a hook (6); the flue gas duct (2) is connected to or separated from the hook (6).

2. A mobile dust collecting device for a titanium sponge reduction furnace according to claim 1, characterized in that: The dust collecting hood (1) comprises ribs (11) and a hood surface (12), wherein the ribs (11) are arranged on the inner side of the hood surface (12), and the ribs (11) and the hood surface (12) are both movably connected to one end of the flue gas duct (2) away from the movable dust collecting assembly (4).

3. A mobile dust collecting device for a titanium sponge reduction furnace according to claim 2, characterized in that: The material of the umbrella rib (11) is angle steel.

4. The mobile dust collecting device for a titanium sponge reduction furnace according to claim 2, characterized in that: The material of the cover surface (12) is a light flame-retardant, high-temperature-resistant, fireproof cloth.

5. The mobile dust collecting device for a titanium sponge reduction furnace according to claim 1, characterized in that: The mobile dust collecting assembly (4) comprises a dust collecting fan (41), a fixed frame (42) and a rolling pulley (43); the dust collecting fan (41) is arranged inside the fixed frame (42); the rolling pulley (43) is arranged at the bottom of the fixed frame (42); the top of the fixed frame (42) is connected to the support frame (3); the dust collecting fan (41) is connected to the flue gas duct (2); and the rolling pulley (43) is connected to the guide rail (5) in a slidable manner.

6. The mobile dust collecting device for a titanium sponge reduction furnace according to claim 5, characterized in that: The mobile dust collecting assembly (4) further comprises a motor (44), which is arranged on the outer side wall of the fixing frame (42), the motor (44) is arranged above the guide rail (5), and the output shaft of the motor (44) is connected to the driving shaft of the rolling pulley (43).

7. The mobile dust collecting device for a titanium sponge reduction furnace according to claim 5, characterized in that: The support frame (3) comprises a support rod (31) and a rotating shaft (32); one end of the support rod (31) is rotatably connected to the top of the mobile dust collecting assembly (4) via the rotating shaft (32); and the other end of the support rod (31) is connected to the hook (6).

8. The mobile dust collecting device for a titanium sponge reduction furnace according to claim 5, characterized in that: At least two guide rails (5) are provided.

9. The mobile dust collecting device for a titanium sponge reduction furnace according to claim 2, characterized in that: At least three ribs (11) are provided.

10. The mobile dust collecting device for a titanium sponge reduction furnace according to claim 2, characterized in that: The cover surface (12) is provided with at least one layer.

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