Large-diameter nested anti-impact device

Abstract

The invention discloses a large-diameter nested anti-scour device, and relates to the technical field of hydrometallurgy, the large-diameter nested anti-scour device comprises: a support assembly, the support assembly is arranged on a flash tank seal head, and the height of the support assembly on the flash tank seal head can be adjusted; the anti-impact cone body is formed by nesting two semi-cone bodies; the fixing assembly is used for fixing the anti-impact cone on the supporting assembly; each semi-cone sequentially passes through the inspection manhole, then the two semi-cones are nested and assembled in the flash tank to form the anti-impact cone, the inspection manhole of the flash tank does not need to be transformed, the transformation difficulty and cost are reduced, the anti-impact cone is detachably installed on the supporting assembly through the fixing assembly, and the anti-impact cone is convenient to assemble and disassemble. The height of the supporting assembly on the end socket of the flash tank can be adjusted, so that the height of the anti-impact cone can be adjusted to adapt to different liquid level control requirements of the flash tank.

Description

Technical Field

[0001] The invention relates to the technical field of hydrometallurgy, in particular to a large-diameter nested anti-impact device. Background Art

[0002] In the alumina production process, the high-temperature and high-pressure dissolved slurry is cooled and reduced in pressure through a flash tank (self-evaporator). The operation process is to directly inject the dissolved slurry into the flash tank through a feed pipe with a perforated plate to reduce the pressure and temperature of the slurry. Due to the small diameter of the orifice plate and the large amount of solid particles contained in the slurry, the feeding process has a great impact and wear on the head structure of the flash tank. After running for a period of time, the head will be thinned or even damaged, resulting in too frequent maintenance of the flash tank, increased maintenance costs, and reduced equipment online rate. At the same time, with the continuous improvement of the single-line production capacity of alumina, the diameter of the feed pipe of the flash tank continues to increase. There is a phenomenon that one flash tank needs to be equipped with multiple feed pipes, which leads to a larger impact range after the slurry is injected. Therefore, it is necessary to set an anti-impact device on the flash tank head.

[0003] Due to the high pressure of the flash tank, the maximum inner diameter of the normal maintenance manhole is about 600mm, which can only meet the needs of the integrated small-diameter anti-collision device. The large-diameter anti-collision device is difficult to repair and replace through the manhole. The non-standard large-diameter manhole will increase the manufacturing difficulty and cost of the flash tank, and it is inconvenient to use. At the same time, different production companies have different requirements for the liquid level control of the flash tank due to different ore conditions. Conventional anti-collision devices are difficult to adjust the height of the anti-collision cone according to the production liquid level to cooperate with production. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a large-diameter nested anti-impact device, in which each half-cone passes through a maintenance manhole in turn, and then the two half-cones are nested and assembled in a flash tank to form an anti-impact cone. There is no need to modify the maintenance manhole of the flash tank, thereby reducing the difficulty and cost of the modification. The anti-impact cone can be detachably mounted on the supporting assembly through a fixing assembly, and the height of the supporting assembly on the flash tank head can be adjusted, thereby adjusting the height of the anti-impact cone to adapt to the requirements of different liquid level control of the flash tank.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a large-diameter nested anti-impact device, comprising: a support assembly, the support assembly is arranged on the flash tank head, and the height of the support assembly on the flash tank head can be adjusted; an anti-impact cone, the anti-impact cone is formed by two half cones nested; a fixing assembly, the fixing assembly is used to fix the anti-impact cone on the support assembly.

[0006] Preferably, the support assembly includes: a plurality of support legs, a plurality of head connecting plates are arranged on the flash tank head, and the plurality of support legs are height-adjustably arranged on the plurality of head connecting plates; a sleeve, the sleeve is connected to the top side walls of the plurality of support legs; and an annular connecting plate, the annular connecting plate is connected to the tops of the plurality of support legs.

[0007] Preferably, the bottom of each of the supporting legs is a vertical section, the vertical section of the supporting leg and the head connecting plate are provided with a plurality of bolt holes in the vertical direction, and the supporting leg and the head connecting plate are connected by bolts.

[0008] Preferably, one of the semi-cones is provided with a groove, the other semi-cone is provided with a protrusion that can be embedded in the groove, both semi-cones are provided with vertical pin holes and horizontal pin holes, and the two semi-cones are movably arranged on the sleeve and the annular connecting plate.

[0009] Preferably, the width of each of the semi-cones is 300-600 mm, and the diameter of two semi-cones after being nested and assembled is 600-1000 mm.

[0010] Preferably, the fixing assembly includes: a fixed square steel, which is provided with a through hole and is arranged at the bottom of the sleeve; a first pin shaft, a socket is provided at the middle part of the first pin shaft, the upper side of the first pin shaft is inserted into a pair of vertical pin holes, and the lower side passes through the through hole on the fixed square steel, a threaded portion is provided on the lower side of the first pin shaft, and a nut is threadedly connected to the threaded portion; a second pin shaft, which is inserted into the socket of the first pin shaft and a pair of transverse pin holes of the two semi-cones.

[0011] The present invention provides a large-diameter nested anti-collision device, which has the following beneficial effects: 1. In the present invention, each half cone passes through the inspection manhole in turn, and then the two half cones are nested and assembled in the flash tank to form an anti-collision cone. There is no need to modify the inspection manhole of the flash tank, which reduces the difficulty and cost of the modification. The anti-collision cone is detachably mounted on the support component through a fixing component. The height of the support component on the flash tank head can be adjusted, and then the height of the anti-collision cone can be adjusted to adapt to the requirements of different liquid level control of the flash tank.

[0012] 2. The nested anti-impact cone design of the present invention can meet the maintenance requirements of the manholes of conventional equipment and is easy to disassemble and replace; the large-diameter anti-impact cone can cover the erosion area well to prevent the equipment body from being damaged; the groove and boss structure of the semi-cone, the second pin shaft inserted into the horizontal pin hole and the first pin shaft inserted into the vertical pin hole can all enable the anti-impact cone to withstand the impact force of the slurry and effectively prevent the anti-impact cone from being dispersed. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 A magnified schematic diagram of part A; Figure 3 A top view of the anti-collision cone of the present invention; Figure 4 for Figure 3 Sectional view in the middle BB direction; Figure 5 It is a schematic structural diagram of the first pin shaft of the present invention.

[0014] In the figure: 1, semi-cone; 1-1, vertical pin hole; 1-2, horizontal pin hole; 2, second pin shaft; 3, first pin shaft; 3-1, threaded part; 3-2, socket; 4, fixed square steel; 5, supporting leg; 6, sleeve; 7, annular connecting plate; 8, head connecting plate; 9, flash tank head. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] See also Figure 1-5 The present invention provides a technical solution: a large-diameter nested anti-impact device, comprising: a support assembly, the support assembly is arranged on the flash tank head 9, and the height of the support assembly on the flash tank head 9 can be adjusted; an anti-impact cone, the anti-impact cone is formed by nesting two half cones 1; a fixing assembly, the fixing assembly is used to fix the anti-impact cone on the support assembly.

[0017] In this embodiment, the anti-impact cone is formed by two half cones 1 being nested. When the anti-impact cone is installed in the flash tank, each half cone 1 can be passed through the inspection manhole in turn, and then the two half cones 1 are nested and assembled in the flash tank to form an anti-impact cone. There is no need to modify the inspection manhole of the flash tank, which reduces the difficulty and cost of the modification. The anti-impact cone can be detachably mounted on the supporting assembly through a fixing assembly, and the height of the supporting assembly on the flash tank head 9 can be adjusted, thereby adjusting the height of the anti-impact cone to adapt to the different liquid level control requirements of the flash tank.

[0018] As an embodiment of the present invention, the support assembly includes: multiple support legs 5, multiple head connecting plates 8 are arranged on the flash tank head 9, and the multiple support legs 5 are height-adjustably arranged on the multiple head connecting plates 8; a sleeve 6, the sleeve 6 is connected to the top side walls of the multiple support legs 5; and an annular connecting plate 7, the annular connecting plate 7 is connected to the tops of the multiple support legs 5.

[0019] In this embodiment, the sleeve 6 and the annular connecting plate 7 connect the tops of the multiple support legs 5, and the bottom heights of the multiple support legs 5 are adjustably set on multiple head connecting plates 8. The number of support legs 5 is preferably at least three, and the multiple support legs 5 are evenly distributed around the circumference as a whole to enhance the overall stability.

[0020] As an embodiment of the present invention, the bottom of each support leg 5 is a vertical section, the vertical section of the support leg 5 and the head connecting plate 8 are provided with multiple bolt holes in the vertical direction, and the support leg 5 and the head connecting plate 8 are connected by bolts.

[0021] In this embodiment, the vertical height of the impact cone is adjusted by changing the alignment position of the bolt holes on the support legs 5 and the head connection plate 8 and then fixing them by bolts.

[0022] As an embodiment of the present invention, one half cone 1 is provided with a groove, and the other half cone 1 is provided with a protrusion that can be embedded in the groove. Both half cones 1 are provided with vertical pin holes 1-1 and horizontal pin holes 1-2. The two half cones 1 are movably arranged on the sleeve 6 and the annular connecting plate 7.

[0023] In this embodiment, the protrusion can be embedded in the groove, and the vertical pin hole 1-1 is opened at the corresponding position of the protrusion and the groove. The bottom of each semi-cone 1 near the center position extends downward for a certain distance, and the extended part is embedded in the sleeve 6. The two semi-cones 1 are installed on the annular connecting plate 7.

[0024] As an embodiment of the present invention, the width of each half cone 1 is 300-600 mm, and the diameter of two half cones 1 after being nested and assembled is 600-1000 mm.

[0025] In this embodiment, the width of each half cone 1 is 300-600 mm, which allows it to enter the flash tank through the inspection manhole. The diameter of the two half cones 1 after nesting and assembly is 600-1000 mm, which ensures that the assembled size can meet the production line requirements.

[0026] As an embodiment of the present invention, the fixing assembly includes: a fixed square steel 4, a through hole is opened on the fixed square steel 4, and the fixed square steel 4 is arranged at the bottom of the sleeve 6; a first pin shaft 3, a plug hole 3-2 is arranged in the middle part of the first pin shaft 3, the upper side of the first pin shaft 3 is inserted into a pair of vertical pin holes 1-1, and the lower side passes through the through hole on the fixed square steel 4, and a threaded portion 3-1 is arranged on the lower side of the first pin shaft 3, and a nut is threadedly connected to the threaded portion 3-1; a second pin shaft 2, the second pin shaft 2 is inserted into the plug hole 3-2 of the first pin shaft 3 and a pair of horizontal pin holes 1-2 of the two semi-cones 1.

[0027] In this embodiment, the lower side of the first pin shaft 3 is inserted into the through hole on the fixed square steel 4, and the upper side is inserted into a pair of vertical pin holes 1-1 opened on the two half cones 1. The second pin shaft 2 is inserted into a pair of transverse pin holes 1-2 opened on the two half cones 1 and the insertion hole 3-2 on the first pin shaft 3. Since the fixed square steel 4 is arranged at the bottom of the sleeve 6, when the nut is threadedly connected with the thread set on the lower side of the first pin shaft 3, the first pin shaft 3 can drive the second pin shaft 2 to move vertically downward, and the second pin shaft 2 drives the two half cones 1 to abut against the annular connecting plate 7, thereby fixing the anti-impact cone on the sleeve 6 and the annular connecting plate 7. The upper side of the second pin shaft 2 is inserted into a pair of vertical pin holes 1-1, which can prevent the two half cones 1 from being dispersed.

[0028] The working principle and use process of the present invention are as follows: during installation, a plurality of end-cap connecting plates 8 are arranged on the flash tank end-cap 9, and then the support legs 5 are connected to the end-cap connecting plates 8 by bolts. The vertical height of the support legs 5 is adjusted by adjusting the alignment positions of the bolt holes on the support legs 5 and the end-cap connecting plates 8. Sleeves 6 are welded on the side walls of the plurality of support legs 5, and an annular connecting plate 7 is welded on the top. Each semi-cone 1 is transported to the inside of the flash tank through the inspection manhole in turn, and the fixed square steel 4 is welded to the bottom of the sleeve 6. The upper side of the first pin shaft 3 is inserted into a pair of vertical pin holes 1-1 of the two semi-cones 1. , insert the second pin shaft 2 into a pair of transverse pin holes 1-2 of the two half-cones 1 and the insertion hole 3-2 of the first pin shaft 3, and then insert the lower side of the first pin shaft 3 into the through hole of the fixed square steel 4, and fix the first pin shaft 3 by a nut to press the two half-cones 1 on the annular connecting plate 7. The nested structure can make the diameter of the anti-impact cone reach 1m, increase the anti-impact range and cannot increase the diameter of the inspection hole. The groove and boss structure of the half-cone 1 and the transverse pin hole 1-2 and the vertical pin hole 1-1 can enable the anti-impact cone to withstand the impact force of the slurry and effectively prevent the anti-impact cone from being dispersed.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A large diameter nested anti-collision device, characterized in that: include: A support assembly, wherein the support assembly is arranged on the flash tank end cap (9), and the height of the support assembly on the flash tank end cap (9) is adjustable; An anti-impact cone, wherein the anti-impact cone is formed by two half cones (1) being nested; A fixing assembly is used to fix the impact cone on the supporting assembly.

2. A large diameter nested anti-collision device according to claim 1, characterized in that: The support assembly comprises: A plurality of supporting legs (5), a plurality of end-sealing connecting plates (8) are arranged on the flash tank end-sealing (9), and the plurality of supporting legs (5) are arranged on the plurality of end-sealing connecting plates (8) in a height-adjustable manner; A sleeve (6), wherein the sleeve (6) is connected to the top side walls of the plurality of supporting legs (5); An annular connecting plate (7), wherein the annular connecting plate (7) is connected to the tops of the plurality of supporting legs (5).

3. A large diameter nested anti-collision device according to claim 2, characterized in that: The bottom of each support leg (5) is a vertical section, and the vertical section of the support leg (5) and the head connection plate (8) are provided with a plurality of bolt holes in the vertical direction, and the support leg (5) and the head connection plate (8) are connected by bolts.

4. A large diameter nested anti-collision device according to claim 2, characterized in that: One of the semi-cones (1) is provided with a groove, and the other semi-cone (1) is provided with a protrusion capable of being embedded in the groove. Both of the semi-cones (1) are provided with vertical pin holes (1-1) and transverse pin holes (1-2). The two semi-cones (1) are movably arranged on a sleeve (6) and an annular connecting plate (7).

5. A large diameter nested anti-collision device according to claim 4, characterized in that: The width of each half cone (1) is 300-600 mm, and the diameter of two half cones (1) after being nested and assembled is 600-1000 mm.

6. A large diameter nested anti-collision device according to claim 4, characterized in that: The fixing assembly comprises: A fixed square steel (4), wherein a through hole is formed on the fixed square steel (4), and the fixed square steel (4) is arranged at the bottom of the sleeve (6); A first pin shaft (3), wherein a plug hole (3-2) is provided in the middle portion of the first pin shaft (3), the upper side of the first pin shaft (3) is inserted into a pair of vertical pin holes (1-1), and the lower side thereof penetrates through a through hole on a fixed square steel (4), and a threaded portion (3-1) is provided on the lower side of the first pin shaft (3), and a nut is threadedly connected to the threaded portion (3-1); A second pin shaft (2), wherein the second pin shaft (2) is inserted into the insertion hole (3-2) of the first pin shaft (3) and a pair of transverse pin holes (1-2) of the two semi-cones (1).

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