Online dredging device and reaction device for producing titanium sponge

Abstract

The utility model provides an on-line dredging device and a reaction device for producing sponge titanium, the reaction device is provided with an outlet pipe and is used for discharging liquid magnesium chloride produced by reaction, the on-line dredging device comprises a driving structure and a first connecting rod, the driving structure is hermetically connected with the outlet pipe, and the first connecting rod is connected with the outlet pipe. The first connecting rod is arranged in the outlet pipe and used for driving the first connecting rod to move up and down in the outlet pipe, and a drill bit is arranged at the lower end of the first connecting rod and used for dredging the outlet pipe online. According to the utility model, the long-time occupation of the crown block in the magnesium chloride dredging process can be reduced; the magnesium chloride pipe can be efficiently dredged by a single person through the driving system and the control system, dredging can be completed only by repeating operation for 1-2 times generally, the dredging efficiency is high, and the labor intensity is low.

Description

Technical Field

[0001] The utility model relates to the technical field of production devices for titanium sponge, and in particular to an online dredging device and a reaction device for producing titanium sponge. Background Art

[0002] The magnesium reduction method for producing titanium sponge is to convert ilmenite into titanium tetrachloride, which is then reacted with magnesium metal in a sealed stainless steel tank under the protection of inert gas. It has gradually become a standard process for producing titanium sponge. Since the magnesium chloride liquid generated by the reaction has a higher specific gravity than liquid magnesium and is distributed at the bottom of the reactor, the magnesium chloride generated needs to be discharged regularly using a magnesium chloride tube as the reaction proceeds.

[0003] Once magnesium chloride discharge is not smooth or even blocked by magnesium chloride and magnesium and a small amount of titanium sponge, it is necessary to interrupt production and cool to room temperature before opening the large cover to cut the magnesium chloride discharge pipe for dredging. If the blockage is serious and cannot be dredged, it is necessary to replace the pipe again. This process not only has a large potential safety hazard and is time-consuming, but more importantly, it will cause a serious threat to the quality of the product. For this reason, the Chinese patent of application number 201720975338.8 discloses a reactor for producing titanium sponge, including a reactor cylinder, an upper flange plate and a lower flange plate sleeved on the outer upper end of the reactor cylinder from top to bottom, it is characterized in that the reactor also includes a magnesium chloride discharge pipe, the magnesium chloride discharge pipe includes a vertical pipe section, an arc pipe section, the lower end of the vertical pipe section is connected to the upper end of the arc pipe section, the vertical pipe section is arranged on the outer side wall of the reactor cylinder, and the lower end of the arc pipe section extends into the reactor cylinder from the bottom of the reactor cylinder. This scheme can effectively solve the problem of difficult post-processing of magnesium chloride discharge pipe blockage, but the whole process requires manual operation, labor intensity is large and dredging efficiency is low.

[0004] In view of this, the present utility model is proposed. Utility Model Content

[0005] The utility model solves the problem that the existing outlet pipe for discharging magnesium chloride has low dredging efficiency after being blocked, has high labor intensity and cannot realize online in-situ operation.

[0006] In order to solve the above problems, the utility model provides an online dredging device, which is arranged on a reaction device for producing sponge titanium. The reaction device is provided with an outlet pipe for discharging liquid magnesium chloride produced by the reaction. The online dredging device includes a driving structure and a first connecting rod. The driving structure is sealed and connected to the outlet pipe, and is used to drive the first connecting rod to move up and down in the outlet pipe. A drill bit is provided at the lower end of the first connecting rod for online dredging of the outlet pipe.

[0007] This setting can utilize the up-and-down movement of the first connecting rod when the outlet pipe is blocked, so that the drill bit can contact and break up the blockage to dredge the outlet pipe; when the outlet pipe is not blocked, the first connecting rod can be intermittently moved up and down, effectively preventing the outlet pipe from being blocked.

[0008] Preferably, the on-line dredging device further includes a second connecting rod, which is located at the end of the first connecting rod away from the drill bit, and the second connecting rod and the first connecting rod are quickly disassembled and assembled through an assembly structure. This setting has a simple structure, is convenient for production and processing, and can realize the detachable connection and assembly between the two.

[0009] Preferably, the assembly structure includes a sleeve and an assembly column. The sleeve is located on one of the first connecting rod and the second connecting rod, and the assembly column is located on the other of the first connecting rod and the second connecting rod. The sleeve and the assembly column are connected by threads.

[0010] Preferably, the sleeve is formed by inward depression of the end part of the first connecting rod. The sleeve and the first connecting rod are coaxially and equally diameter-set. The assembly column is formed by outward protrusion of the end part of the second connecting rod. The assembly column and the second connecting rod are equally diameter-set. This setting enables a smooth transition between the first connecting rod and the second connecting rod, and will not interfere with the up-and-down movement and rotational movement of the first connecting rod or the second connecting rod.

[0011] Preferably, the assembly structure further includes a positioning column and an avoidance groove. The positioning column is cylindrical and located inside the sleeve. The positioning column and the sleeve are coaxially set. The avoidance groove is formed by inward depression of the free end part of the assembly column towards the end away from the sleeve. The avoidance groove and the assembly column are coaxially set. The positioning column can be limited and assembled into the avoidance groove. This setting can limit the assembly between the first connecting rod and the second connecting rod, with high assembly accuracy and good reliability.

[0012] Preferably, a part of the positioning column protrudes from the sleeve. The positioning column is provided with an external thread, and the inner wall surface of the avoidance groove is provided with an internal thread. The positioning column and the avoidance groove are connected by threads. This setting can increase the contact area between the first connecting rod and the second connecting rod, so that the action between the two is evenly conducted.

[0013] Preferably, the driving structure includes a motor and a screw nut. The motor can drive the screw nut to rotate. The screw nut is sleeved on the outer peripheral side of the first connecting rod and the two are connected by threads. When the screw nut rotates, it can drive the first connecting rod to move up and down and rotate at the same time, with a simple structure and convenient implementation.

[0014] The present utility model also provides a reaction device for producing titanium sponge, which includes the above-mentioned on-line dredging device and also includes a heating furnace. A reaction kettle in a sealed state is arranged in the heating furnace. A sieve plate is arranged at the lower part of the reaction kettle. The inlet end of the outlet pipe is located below the sieve plate. A connecting pipe is arranged at the outlet end of the outlet pipe for conveying liquid magnesium chloride to the next process. The on-line dredging device is located at one end of the outlet pipe close to the connecting pipe. Since the density of liquid magnesium chloride is greater than that of liquid magnesium and it is located at the bottom of the reaction kettle, the produced titanium sponge is located on the sieve plate. The liquid magnesium chloride can be discharged through the outlet pipe, while the liquid magnesium remains in the reaction kettle for continuous reaction.

[0015] Preferably, a feeding pipe is arranged at the top end of the reaction kettle for inputting titanium tetrachloride into the reaction kettle. A vertical pipe is arranged at the top end of the reaction kettle. A horizontal pipe is arranged at the upper end of the vertical pipe. One end of the horizontal pipe is communicated with the vertical pipe, and the other end of the horizontal pipe is hermetically arranged.

[0016] Compared with the prior art, the on-line dredging device and the reaction device for producing titanium sponge according to the embodiments of the present utility model have the following beneficial effects: 1) The first connecting rod and the second connecting rod with quick connection can replace steel drills with different lengths, reducing the long-time occupation of the overhead crane during the dredging of magnesium chloride. 2) The single-person high-efficiency dredging of the magnesium chloride pipe is realized through the driving system and the control system, and usually only 1-2 repeated operations are required to complete the dredging. 3) The structure is simple, the transmission is stable and reliable, and it is convenient for production and processing. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of the reaction device for producing titanium sponge according to the embodiment of the present utility model;

[0018] Figure 2 It is a schematic structural diagram of the on-line dredging device according to the embodiment of the present utility model;

[0019] Figure 3 It is a connection schematic diagram of the first connecting rod and the second connecting rod according to the embodiment of the present utility model.

[0020] Description of the Reference Numerals:

[0021] 1 - Heating furnace; 2 - Reaction kettle; 3 - Outlet pipe; 4 - On-line dredging device; 41 - Driving structure; 42 - First connecting rod; 421 - Sleeve; 422 - Positioning column; 43 - Second connecting rod; 431 - Assembly column; 432 - Avoidance groove; 44 - Drilling bit; 5 - Vertical pipe; 6 - Horizontal pipe; 7 - Feeding pipe; 8 - Sieve plate; 9 - Blockage. Detailed Embodiments

[0022] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will provide a detailed description of the specific embodiments of the present utility model with reference to the accompanying drawings. On the premise of no conflict, the technical features of the embodiments of the present utility model can be combined with each other.

[0023] During the production process of titanium sponge, inert gas is usually introduced into the reaction device to generate pressure, so as to discharge the liquid magnesium chloride located at the bottom of the furnace through the outlet pipe 3; if there are operation or equipment failures during this process, the liquid magnesium or magnesium chloride entering the outlet pipe 3 will turn into solid state as the temperature drops, causing blockage inside the discharge pipe and resulting in the following various adverse consequences: 1. The pressure inside the reactor continuously rises, posing a safety hazard; 2. The liquid level inside the reactor continuously rises, causing the position of the reaction zone to continuously rise, and even the large cover of the reactor may be melted under high temperature conditions, affecting the product quality; 3. The magnesium chloride is not discharged in time, resulting in the accumulation of heat inside the reactor, which will cause the temperature to be too high and affect the service life.

[0024] In the prior art, a steel drill rod is usually used to dredge the outlet pipe. Steel drill rods of different lengths need to be selected according to the blockage position, and the steel drill rod is inserted into the outlet pipe by a crane, and artificial pressure is applied to break through the accumulated solid magnesium or magnesium chloride with the steel drill rod. This process usually requires 2-3 operators to repeat 3-5 times, taking about 1 hour. How to improve the dredging efficiency of the outlet pipe not only can reduce the occupation of human and material resources, but also has important significance for ensuring product quality. For this reason, the applicant proposes the following technical solutions:

[0025] As Figures 1-3 shown, an on-line dredging device 4 is provided on the reaction device for producing titanium sponge. The reaction device is provided with an outlet pipe 3 for discharging the liquid magnesium chloride produced by the reaction; the on-line dredging device 4 includes a driving structure 41 and a first connecting rod 42. The driving structure 41 is hermetically connected to the outlet pipe 3 and is used to drive the first connecting rod 42 to move up and down inside the outlet pipe 3. A drill bit 44 is provided at the lower end of the first connecting rod 42 for on-line dredging of the outlet pipe 3.

[0026] This setting can utilize the up-and-down movement of the first connecting rod 42 when the outlet pipe 3 is blocked, so that the bit 44 can contact and crush the blockage 9 to dredge the outlet pipe 3; when the outlet pipe 3 is not blocked, the first connecting rod 42 can be intermittently moved up and down to effectively prevent the outlet pipe 3 from being blocked. Preferably, the reaction device for producing titanium sponge is provided with a pressure sensor, a temperature sensor and a controller, and the controller is electrically connected to the driving structure 41, the pressure sensor and the temperature sensor respectively. The reaction parameters of the reaction device can be detected by the pressure sensor and the temperature sensor. When the values of the pressure sensor and the temperature sensor are both relatively high, it is very likely that there is a blockage 9 in the outlet pipe 3 of the reaction device, and then the frequency of the up-and-down movement of the first connecting rod 42 can be increased to quickly dredge it; when the outlet pipe 3 of the reaction device is not blocked, the frequency and / or the interval duration of the up-and-down movement of the first connecting rod 42 are reduced to keep the outlet pipe 3 in a dredged state and not affect the normal reaction process.

[0027] As an example of the present utility model, the driving structure 41 includes a motor and a lead screw nut. The motor can drive the lead screw nut to rotate. The lead screw nut is sleeved on the outer peripheral side of the first connecting rod 42 and the two are connected by threads. When the lead screw nut rotates, it can drive the first connecting rod 42 to move up and down while rotating, with a simple structure and convenient implementation. The assembly relationship between the motor and the lead screw nut is prior art and will not be elaborated here.

[0028] Preferably, the on-line dredging device 4 further includes a second connecting rod 43. The second connecting rod 43 is located at a position away from the bit 44 of the first connecting rod 42, and an assembly structure is provided between the second connecting rod 43 and the first connecting rod 42. This setting has a simple structure, is convenient for production and processing, and can realize the detachable connection and assembly between the two.

[0029] As an example of the present utility model, the assembly structure includes a sleeve 421 and an assembly post 431. The sleeve 421 is located on one of the first connecting rod 42 and the second connecting rod 43, and the assembly post 431 is located on the other of the first connecting rod 42 and the second connecting rod 43. The sleeve 421 and the assembly post 431 are connected by threads.

[0030] Preferably, the sleeve 421 is formed by inward depression of the end part of the first connecting rod 42. The sleeve 421 and the first connecting rod 42 are coaxially and equally diametrically arranged. The assembly post 431 is formed by outward protrusion of the end part of the second connecting rod 43. The assembly post 431 and the second connecting rod 43 are equally diametrically arranged. This setting enables a smooth transition between the first connecting rod 42 and the second connecting rod 43, and will not interfere with the up-and-down movement and rotational movement of the first connecting rod 42 or the second connecting rod 43.

[0031] Preferably, the assembly structure further includes a positioning post 422 and an avoidance groove 432. The positioning post 422 is cylindrical and located within the sleeve 421. The positioning post 422 and the sleeve 421 are coaxially arranged. The avoidance groove 432 is recessed from the free end portion of the assembly post 431 towards the end away from the sleeve 421. The avoidance groove 432 and the assembly post 431 are coaxially arranged. The positioning post 422 can be limited and assembled into the avoidance groove 432. This setting can limit the assembly between the first connecting rod 42 and the second connecting rod 43, with high assembly accuracy and good reliability.

[0032] Preferably, a part of the positioning post 422 protrudes from the sleeve 421. The positioning post 422 is provided with an external thread, and the inner wall surface of the avoidance groove 432 is provided with an internal thread. The positioning post 422 and the avoidance groove 432 are connected by a thread. This setting can increase the contact area between the first connecting rod 42 and the second connecting rod 43, so that the action between the two is evenly conducted.

[0033] The reaction device for producing titanium sponge includes a heating furnace 1. A reaction kettle 2 in a sealed state is arranged in the heating furnace 1. A sieve plate 8 is arranged at the lower part of the reaction kettle 2. The inlet end of the outlet pipe 3 is located below the sieve plate 8. The outlet end of the outlet pipe 3 is provided with a connecting pipe for transporting liquid magnesium chloride to the next process. The on-line dredging device 4 is located at one end of the outlet pipe 3 close to the connecting pipe.

[0034] Since the density of liquid magnesium chloride is greater than that of liquid magnesium, it is located at the bottom of the reaction kettle 2, and the produced titanium sponge is located on the sieve plate 8. The liquid magnesium chloride can be discharged through the outlet pipe 3, while the liquid magnesium continues to react in the reaction kettle 2.

[0035] As an example of the present invention, a feeding pipe 7 is arranged at the top end of the reaction kettle 2 for inputting titanium tetrachloride into the reaction kettle 2. A vertical pipe 5 is arranged at the top end of the reaction kettle 2. A horizontal pipe 6 is arranged at the upper end of the vertical pipe 5. One end of the horizontal pipe 6 is communicated with the vertical pipe 5, and the other end of the horizontal pipe 6 is sealed. This setting can add liquid magnesium into the reaction kettle 2 in advance through the top end of the vertical pipe 5, and the horizontal pipe 6 can be communicated with other reaction vessels.

[0036] When there is a blockage 9 in the outlet pipe 3, the following steps are taken for operation:

[0037] S1. Input the length of the outlet pipe 3 for discharging liquid magnesium chloride into the controller, and determine whether to select the second connecting rod 43 based on the length.

[0038] S2. Control the first connecting rod 42 to move downward until it stops at 80% of the length of the first connecting rod 42 through the controller. Then, connect and install the second connecting rod 43 at the top of the first connecting rod 42, and control the first connecting rod 42 to move downward again until it stops due to restrictions.

[0039] S3. After the controller enters and reaches the maximum dredging length limit, control the first connecting rod 42 to enter the high-frequency dredging mode, that is, move up and down repeatedly to continuously impact the blockage 9.

[0040] S4. After the dredging operation is completed, control the first connecting rod 42 to move upward until it stops at 80% of the length of the first connecting rod 42, and remove the second connecting rod 43. Then, control the first connecting rod 42 to move upward again until it leaves the outlet pipe 3.

[0041] Using the online dredging device 4 described in the present application, the dredging operation that originally required two to three people to cooperate can be reduced to one person to complete; the time occupied by the overhead crane is reduced from the entire dredging process to the installation and disassembly time of the chassis; the entire dredging time is reduced from 1 hour to 20 minutes, effectively improving the efficiency of dredging the blockage 10 in the outlet pipe 3 and ensuring the smoothness of the production rhythm.

[0042] Although the present utility model is disclosed as above, the present utility model is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the scope defined by the claims.

Claims

1. An on-line dredging device is arranged on a reaction device for producing titanium sponge. The reaction device is provided with an outlet pipe (3) for discharging liquid magnesium chloride produced by the reaction. It is characterized in that, The on-line dredging device includes a driving structure (41) and a first connecting rod (42). The driving structure (41) is hermetically connected to the outlet pipe (3) and is used to drive the first connecting rod (42) to move up and down in the outlet pipe (3). A drill bit (44) is arranged at the lower end of the first connecting rod (42) for on-line dredging of the outlet pipe (3).

2. The online dredging device according to claim 1, wherein The on-line dredging device further includes a second connecting rod (43). The second connecting rod (43) is located at one end of the first connecting rod (42) away from the drill bit (44), and the second connecting rod (43) and the first connecting rod (42) are quickly disassembled and assembled through an assembling structure.

3. The online dredging device according to claim 2, wherein The assembling structure includes a sleeve (421) and an assembling column (431). The sleeve (421) is located on one of the first connecting rod (42) and the second connecting rod (43), and the assembling column (431) is located on the other of the first connecting rod (42) and the second connecting rod (43). The sleeve (421) and the assembling column (431) are connected by threads.

4. The online dredging device according to claim 3, wherein The sleeve (421) is formed by inward depression of the end part of the first connecting rod (42). The sleeve (421) and the first connecting rod (42) are coaxially arranged and have the same diameter. The assembling column (431) is formed by outward protrusion of the end part of the second connecting rod (43). The assembling column (431) and the second connecting rod (43) are of the same diameter.

5. The online dredging device according to claim 4, characterized in that, The assembling structure further includes a positioning column (422) and an avoidance groove (432). The positioning column (422) is cylindrical and is located in the sleeve (421). The positioning column (422) and the sleeve (421) are coaxially arranged. The avoidance groove (432) is formed by inward depression of the free end part of the assembling column (431) towards the end away from the sleeve (421). The avoidance groove (432) and the assembling column (431) are coaxially arranged. The positioning column (422) can be limited and assembled into the avoidance groove (432).

6. The online dredging device according to claim 5, characterized in that, Part of the positioning column (422) protrudes from the sleeve (421). The positioning column (422) is provided with an external thread, and the inner wall surface of the avoidance groove (432) is provided with an internal thread. The positioning column (422) and the avoidance groove (432) are connected by threads.

7. The online dredging device according to claim 1, wherein The driving structure (41) includes a motor and a lead screw nut. The motor can drive the lead screw nut to rotate. The lead screw nut is sleeved on the outer peripheral side of the first connecting rod (42) and the two are connected by threads.

8. A reaction device for producing titanium sponge, characterized in that, Including the on-line dredging device (4) according to any one of claims 1-7, further including a heating furnace (1). A reaction kettle (2) in a sealed state is arranged in the heating furnace (1). A sieve plate (8) is arranged at the lower part of the reaction kettle (2). The inlet end of the outlet pipe (3) is located below the sieve plate (8). The outlet end of the outlet pipe (3) is provided with a connecting pipe for transporting liquid magnesium chloride to the next process. The on-line dredging device (4) is located at one end of the outlet pipe (3) close to the connecting pipe.

9. The reaction device for producing titanium sponge according to claim 8, wherein, A feed pipe (7) is provided at the top of the reactor (2) for inputting titanium tetrachloride into the reactor (2); a vertical pipe (5) is provided at the top of the reactor (2), a horizontal pipe (6) is provided at the upper end of the vertical pipe (5), one end of the horizontal pipe (6) is communicated with the vertical pipe (5), and the other end of the horizontal pipe (6) is hermetically arranged.

Images