Large-diameter nested anti-impact device

Abstract

The utility model discloses a large-diameter nested anti-scour device, which relates to the technical field of hydrometallurgy, and comprises a support component, a plurality of anti-scour devices, a plurality of anti-scour devices, a plurality of anti-scour devices, a plurality of anti-scour devices, a plurality of anti-scour devices, a plurality of anti-scour devices, a plurality of anti-scour devices and a plurality of anti-scour devices, 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; according to the utility model, each semi-cone sequentially passes through the inspection manhole, and then the two semi-cones are nested and assembled in the flash tank to form the anti-impact cone, so that the inspection manhole of the flash tank does not need to be transformed, the difficulty and the cost of transformation are reduced, and the anti-impact cone is detachably mounted on the supporting assembly through the fixing assembly; 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 utility model relates to the technical field of hydrometallurgy, in particular to a large-diameter nested impact prevention device. Background Art

[0002] In the alumina production process, the high-temperature and high-pressure digested pulp is cooled and depressurized through a flash tank (self-evaporator). The operation process is to directly inject the digested pulp into the flash tank through a feed pipe with an orifice plate to reduce the pressure and temperature of the pulp. Since the diameter of the orifice plate is small and the pulp contains a large amount of solid particles, the impact and wear on the head structure of the flash tank during the feeding process are very large. After running for a period of time, the head will be thinned or even damaged, resulting in too frequent maintenance of the flash tank, increasing the maintenance cost, reducing the equipment on-line 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 is constantly increasing, and there is a phenomenon that one flash tank needs to be equipped with multiple feed pipes, resulting in a larger impact range after the pulp is sprayed. Therefore, an impact prevention device needs to be set on the head of the flash tank.

[0003] Due to the relatively high pressure of the flash tank, the maximum inner diameter of the normal maintenance manhole equipped is about 600 mm, which can only meet the small-diameter integral impact prevention device. It is difficult to repair and replace the large-diameter impact prevention device through the manhole. Equipping a non-standard large-diameter manhole will increase the manufacturing difficulty and cost of the flash tank, and it is not convenient to use. At the same time, due to different ore conditions and other factors in different production enterprises, the requirements for the liquid level control of the flash tank are different, and it is difficult for conventional impact prevention devices to adjust the height of the impact prevention cone according to the production liquid level to cooperate with production. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a large-diameter nested impact prevention device. Each half-cone passes through the maintenance manhole in turn, and then the two half-cones are nested and assembled in the flash tank to form an impact prevention cone, without the need to transform the maintenance manhole of the flash tank, reducing the difficulty and cost of transformation. The impact prevention cone is detachably installed on the support component through the fixing component, and the height of the support component on the head of the flash tank can be adjusted, so as to adjust the height of the impact prevention cone to adapt to the requirements of different liquid level controls of the flash tank.

[0005] To achieve the above object, the utility model is realized through the following technical solutions: A large-diameter nested impact prevention device, comprising: a support component, the support component is arranged on the head of the flash tank, and the height of the support component on the head of the flash tank can be adjusted; an impact prevention cone, the impact prevention cone is formed by nesting two half-cones; a fixing component, the fixing component is used to fix the impact prevention cone on the support component.

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

[0007] Preferably, the bottom of each support leg is a vertical section, and multiple bolt holes are formed in the vertical sections of the support legs and the head connection plates in the vertical direction, and the support legs and the head connection plates are connected by bolts.

[0008] Preferably, a groove is formed in one of the half cones, a convex block capable of being embedded in the groove is arranged on the other half cone, vertical pin holes and horizontal pin holes are formed in both half cones, and both half cones are movably arranged on the sleeve and the annular connection plate.

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

[0010] Preferably, the fixing assembly includes: a fixed square steel, a through hole is formed in the fixed square steel, and the fixed square steel is arranged at the bottom of the sleeve; a first pin shaft, a jack is arranged in 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, the lower side penetrates through to the through hole on the fixed square steel, a threaded part is arranged on the lower side of the first pin shaft, and a nut is threadedly connected to the threaded part; a second pin shaft, the second pin shaft is inserted into the jack of the first pin shaft and a pair of horizontal pin holes of the two half cones.

[0011] The utility model provides a large-diameter nested anti-scouring device, which has the following beneficial effects:

[0012] 1. In the utility model, each half cone passes through the maintenance manhole in sequence, and then the two half cones are nested and assembled in the flash tank to form an anti-scouring cone. There is no need to transform the maintenance manhole of the flash tank, which reduces the difficulty and cost of transformation. The anti-scouring cone is detachably installed on the support assembly through the fixing assembly, and the height of the support assembly on the flash tank head can be adjusted, so as to adjust the height of the anti-scouring cone to adapt to the requirements of different liquid level controls of the flash tank.

[0013] 2. The nested anti-scouring cone design of the utility model can meet the maintenance requirements of the conventional equipment manhole, and is convenient for disassembly and replacement; the large-diameter anti-scouring cone can well cover the erosion area and prevent the equipment body from being damaged; the groove and convex platform structure of the half 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-scouring cone to withstand the impact force of the pulp and effectively prevent the anti-scouring cone from being washed away. Description of the Drawings

[0014] Figure 1 is the structural schematic diagram of the present utility model;

[0015] Figure 2 is Figure 1 the enlarged schematic diagram of part A in

[0016] Figure 3 is the top view of the anti-impact cone of the present utility model;

[0017] Figure 4 is Figure 3 the sectional view in the direction of B-B in

[0018] Figure 5 is the structural schematic diagram of the first pin shaft of the present utility model.

[0019] 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, jack; 4, fixed square steel; 5, support leg; 6, sleeve; 7, annular connecting plate; 8, head connecting plate; 9, flash tank head. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figure 1-5 , the present utility model provides a technical solution: a large-diameter nested anti-impact device, including: 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 semi-cones 1; a fixing assembly, the fixing assembly is used to fix the anti-impact cone on the support assembly.

[0022] In this embodiment, the anti-impact cone is formed by nesting two semi-cones 1. When installing the anti-impact cone into the flash tank, each semi-cone 1 can pass through the maintenance manhole in sequence, and then the two semi-cones 1 are nested and assembled in the flash tank to form the anti-impact cone, without modifying the maintenance manhole of the flash tank, reducing the difficulty and cost of the modification. The anti-impact cone is detachably installed on the support assembly through the fixing assembly, and the height of the support assembly on the flash tank head 9 can be adjusted, so as to adjust the height of the anti-impact cone to adapt to the requirements of different liquid level controls of the flash tank.

[0023] As an embodiment of the present utility model, the support assembly includes: multiple support legs 5, multiple head connection plates 8 are provided on the flash tank head 9, and the multiple support legs 5 are height-adjustably arranged on the multiple head connection plates 8; a sleeve 6, the sleeve 6 is connected to the top side walls of the multiple support legs 5; an annular connection plate 7, the annular connection plate 7 is connected to the tops of the multiple support legs 5.

[0024] In this embodiment, the sleeve 6 and the annular connection plate 7 connect the tops of the multiple support legs 5, the bottom heights of the multiple support legs 5 are height-adjustably arranged on the multiple head connection plates 8, and the number of the support legs 5 is preferably at least three, and the multiple support legs 5 are circumferentially and evenly distributed as a whole to enhance the overall stability.

[0025] As an embodiment of the present utility model, the bottom of each support leg 5 is a vertical section, and multiple bolt holes are provided in the vertical sections of the support legs 5 and the head connection plates 8 in the vertical direction, and the support legs 5 and the head connection plates 8 are connected by bolts.

[0026] In this embodiment, by changing the alignment positions of the bolt holes on the support legs 5 and the head connection plates 8 and then fixing them with bolts, the adjustment of the anti-impulse cone in the vertical height is realized.

[0027] As an embodiment of the present utility model, a groove is provided on one half cone 1, a convex block capable of being embedded in the groove is provided on the other half cone 1, vertical pin holes 1-1 and horizontal pin holes 1-2 are provided on both half cones 1, and the two half cones 1 are movably arranged on the sleeve 6 and the annular connection plate 7.

[0028] In this embodiment, the convex block can be embedded into the groove, the vertical pin holes 1-1 are provided at the corresponding positions of the convex block and the groove, and the bottom of each half cone 1 near the center position extends downward by a certain distance, and the extended part is embedded into the sleeve 6, and the two half cones 1 are installed on the annular connection plate 7.

[0029] As an embodiment of the present utility model, the width of each half cone 1 is 300-600 mm, and the diameter after the two half cones 1 are nested and assembled is 600-1000 mm.

[0030] In this embodiment, the width of each half cone 1 being 300-600 mm enables it to enter the flash tank through the maintenance manhole, and the diameter of 600-1000 mm after the two half cones 1 are nested and assembled can ensure that the assembled size meets the requirements of the production line.

[0031] As an embodiment of the present utility model, the fixing assembly includes: a fixing square steel 4, through holes are provided on the fixing square steel 4, and the fixing square steel 4 is arranged at the bottom of the sleeve 6; a first pin shaft 3, a jack 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, the lower side penetrates through the through hole on the fixing 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 jack 3-2 of the first pin shaft 3 and a pair of transverse pin holes 1-2 of two half cones 1.

[0032] In this embodiment, the lower side of the first pin shaft 3 is inserted into the through hole on the fixing square steel 4, the upper side is inserted into a pair of vertical pin holes 1-1 opened on two half cones 1, and the second pin shaft 2 is inserted into a pair of transverse pin holes 1-2 opened on two half cones 1 and the jack 3-2 on the first pin shaft 3. Since the fixing square steel 4 is arranged at the bottom of the sleeve 6, when the nut is threadedly connected to the thread arranged 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 two half cones 1 to abut against the annular connecting plate 7, so as to fix the impact-proof 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 two half cones 1 from being scattered.

[0033] The working principle and usage process of the present utility model: During installation, a plurality of head connecting plates 8 are arranged on the flash tank head 9, and then the support legs 5 and the head connecting plates 8 are connected by bolts. By adjusting the alignment position of the bolt holes on the support legs 5 and the head connecting plates 8, the vertical height of the support legs 5 is adjusted. Sleeves 6 are welded on the side walls of multiple support legs 5, and annular connecting plates 7 are welded on the tops. Each half cone 1 is sequentially transported into the flash tank through the maintenance manhole. The fixing square steel 4 is welded at 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 two half cones 1. The second pin shaft 2 is inserted into a pair of transverse pin holes 1-2 of two half cones 1 and the jack 3-2 of the first pin shaft 3. Then the lower side of the first pin shaft 3 is inserted into the through hole of the fixing square steel 4, and the first pin shaft 3 is fixed by a nut to press two half cones 1 on the annular connecting plate 7. The nested structure can make the diameter of the impact-proof cone reach 1 m, increasing the impact-proof range without increasing the diameter of the inspection hole. The groove and boss structure of the half cone 1, as well as the transverse pin hole 1-2 and the vertical pin hole 1-1, can enable the impact-proof cone to withstand the impact force of the pulp and effectively prevent the impact-proof cone from being scattered.

[0034] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A large-diameter nested anti-impulse device, characterized in that, Comprising: A support assembly, which 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 impact prevention cone, which is formed by nesting two half cones (1); A fixing assembly, which is used to fix the impact prevention cone on the support assembly.

2. The large-diameter nested impact protection device according to claim 1, characterized in that, The support assembly includes: Multiple support legs (5), multiple head connection plates (8) are arranged on the flash tank head (9), and the multiple support legs (5) are arranged on the multiple head connection plates (8) with adjustable height; A sleeve (6), which is connected to the top side walls of the multiple support legs (5); An annular connection plate (7), which is connected to the tops of the multiple support legs (5).

3. The large-diameter nested impact prevention device according to claim 2, wherein, The bottom of each support leg (5) is a vertical section, and multiple bolt holes are provided in the vertical direction on the vertical section of the support leg (5) and the head connection plate (8), and the support leg (5) is connected to the head connection plate (8) by bolts.

4. A large-diameter nested anti-impulse device according to claim 2, characterized in that, A groove is provided on one of the half cones (1), a convex block that can be embedded in the groove is provided on the other half cone (1), vertical pin holes (1-1) and horizontal pin holes (1-2) are provided on both half cones (1), and the two half cones (1) are movably arranged on the sleeve (6) and the annular connection plate (7).

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

6. The large-diameter nested impact protection device according to claim 4, characterized in that, The fixing assembly includes: A fixing square steel (4), a through hole is provided on the fixing square steel (4), and the fixing square steel (4) is arranged at the bottom of the sleeve (6); A first pin shaft (3), a jack (3-2) is provided 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), the lower side penetrates through to the through hole on the fixing square steel (4), a threaded part (3-1) is provided on the lower side of the first pin shaft (3), and a nut is threadedly connected to the threaded part (3-1); A second pin shaft (2), which is inserted into the jack (3-2) of the first pin shaft (3) and a pair of horizontal pin holes (1-2) of the two half cones (1).

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